Sparing vs Sharing: The Great Debate Over How to Protect Nature

What is the best way to save nature – to cordon off areas for parks and open space or to integrate conservation measures on working lands? Recent research makes a case for each of these approaches and has reignited a long-standing debate among scientists and conservationists.

By Fred Pearce

Sparing vs Sharing: The Great Debate Over How to Protect Nature

Understanding What Makes Plants Happy

A dense carpet of woodland perennials. Thomas Rainer, a landscape architect, calls plants “social creatures” that thrive in particular networks. Credit Mark Baldwin

 Thomas Rainer and I have both been doing the botanical thing for decades; we know, and use, many of the same plants — and even much of the same horticultural vocabulary. But what he and I see when we look at a butterfly weed or a coneflower, or what we mean when we say familiar words like “layering” or “ground cover,” is surprisingly not synonymous.

It turns out I’ve been missing what the plants were trying to tell me, failing to read botanical body language and behavior that could help me put plants together in combinations that would solve challenges that many of us have: beds that aren’t quite working visually, and garden areas that don’t function without lots of maintenance.

As we gardeners shop the catalogs or the just-opening local garden centers with an eye to finally “fixing” that bed out front that has never quite cooperated, I asked Mr. Rainer, a landscape architect based in Washington, D.C., to lend us his 3-D vision.

In his career, Mr. Rainer has designed landscapes for the United States Capitol grounds, the Martin Luther King Jr. Memorial and the New York Botanical Garden, as well as gardens from Maine to Florida. He is an author with Claudia West of the 2015 book “Planting in a Post-Wild World: Designing Plant Communities for Resilient Landscapes.” He is a principal in the firm Rhodeside & Harwell, but will leave soon to start a new firm with his wife, the landscape architect Melissa Rainer, and Ms. West. He advocates an ecologically expressive aesthetic that interprets rather than imitates nature.

Q. You visit a lot of gardens, and probably hear from gardeners like me with beds that just aren’t working. What’s the most common cause?

Traditional garden design often isolates plants, setting them “as individual objects in a sea of mulch,” Mr. Rainer said. “We place them in solitary confinement.” Credit Thomas Rainer

A. First, we have to understand that plants are social creatures. Our garden plants evolved as members of diverse social networks. Take a butterfly weed (Asclepias tuberosa, named this year’s Perennial Plant of the Year by the industry group the Perennial Plant Association), for example. The height of its flower is exactly the height of the grasses it grows among. Its narrow leaves hug its stems to efficiently emerge through a crowded mix. It has a taproot that drills through the fibrous roots of grasses. Everything about that plant is a reaction to its social network. And it is these social networks that make plantings so resilient.

So if we think about the way plants grow in the wild, it helps us understand how different our gardens are. In the wild, every square inch of soil is covered with a mosaic of interlocking plants, but in our gardens, we arrange plants as individual objects in a sea of mulch. We place them in solitary confinement.

So if you want to add butterfly weed to your garden, you might drift it in beds several feet apart and tuck some low grasses in as companions, like prairie dropseed, blue grama grass or buffalo grass.

Start by looking for bare soil. It is everywhere in our gardens and landscapes. Even in beds with shrubs in them, there are often large expanses of bare soil underneath. It’s incredibly high-maintenance. It requires multiple applications of bark mulch a year, pre-emergent herbicides and lots and lots of weeding.

The alternative to mulch is green mulch — that is, plants. This includes a wide range of herbaceous plants that cover soil, like clump-forming sedges, rhizomatous strawberries or golden groundsel, and self-seeding columbine or woodland poppies.

Intermingling plants can also foster more flowering plants in a smaller space. Credit Thomas Rainer

Q. If I want to try to do it more as nature does, what am I aiming for? Where do I take my cues?

A. The big shift in horticulture in the next decade will be a shift from thinking about plants as individual objects to communities of interrelated species. We think it’s possible to create designed plant communities: stylized versions of naturally occurring ones, adapted to work in our gardens and landscapes. This is not ecological restoration, it’s a hybrid of ecology and horticulture. We take inspiration from the layered structure in the wild, but combine it with the legibility and design of horticulture. It is the best of both worlds: the functionality and biodiversity of an ecological approach, but also the focus on beauty, order and color that horticulture has given us. It’s possible to balance diversity with legibility, ecology with aesthetics.

And it is a shift in how we take care of our gardens: a focus on management, not maintenance. When you plant in communities, you manage the entire plantings, not each individual plant. This is a pretty radical shift. It’s O.K. if a plant self-seeds around a bit, or if one plant becomes more dominant. As long as it fits the aesthetic and functional goals. We can do much less and get more.

Q. Sort of gives new meaning to the phrase “community garden,” doesn’t it?

A. Yes. And plants each also have particular behavior — whether it wants to hang out with other plants of its own species or not. So many gardening mistakes are a result of not paying attention to this.

Q. You make them sound like social animals, which makes me think I’ve been shallow, objectifying plants — choosing among them for just another pretty face, instead of reading their body language to get at their true nature.

A. One of the most useful ideas that came out of our research was this German idea of sociability, developed by Richard Hansen and Friedrich Stahl. They rank a plant’s predilection to spread on a scale of 1 to 5. A low-sociability plant is one that in the wild is almost always found by itself (Panicum virgatum, for example, is almost always found by itself in a meadow). A high-sociability plant is one that spreads into large colonies (Epimedium or Tiarella cordifolia are Level 4 plants; Carex pensylvanica and Packera aurea are Level 5). You arrange plants according to their sociability level: Plants of lower levels (1 and 2) are set individually or in small clusters. Plants of higher levels (3 to 5) are set in groups of 10 to 20-plus, arranged loosely around the others.

A meadow-like display of greenery on an urban deck designed by the HM White landscaping firm. Credit Aaron Booher

It sounds geeky, ranking plants on a scale, but it’s useful because it informs which you should mass, and which you should mingle. It’s why a mass of 50 echinacea (Level 2) tends to flop. They’re just not meant to cover ground. But if you scatter a handful of echinacea in a mass of prairie dropseed or sideoats grama, it will look great.

For years, I would pack together large grasses like switchgrass, or flowers like garden phlox (both Level 1 plants) and wonder why they got rust or powdery mildew. But if you find phlox in the wild, it will never have mildew. It’s growing out of a lot of lower plants, so it gets good air circulation. This idea changed the way I look at plants and pay attention to how they behave.

Q. I know that nature doesn’t plop a 50-foot tree in a mowed lawn (or mow its lawn at all, actually), so that’s not the winning design tactic. I also know that more diverse layered designs are richer ecologically — and now you are saying they are easier to manage, too. But how do I figure out how to fit the right plants together?

A. We need to start thinking about how, not what. So many garden books focus on what to plant, but so few focus on how to arrange plants to fit together in ecological combinations. When we fit our plants together like a tight jigsaw puzzle, the maintenance goes way, way down. They start becoming resilient systems rather than random objects.

To do this, we need to pay attention to a plant’s shape. Its shape is often an indication of where it grows in the vertical strata of a plant community. Upright plants with low or minimal basal foliage like Joe Pye weed (Eutrochium) or spiky upright plants like beargrass (Nolina bigelovii) have adapted to growing through other plants. Horizontally spreading rhizomatous plants like Pennsylvania sedge (Carex pensylvanica) or beach strawberry (Fragaria chiloensis) have adapted to grow underneath others. You almost have to look at a plant from the vantage point of a chipmunk to see its shape.

A grouping of plants by sociability: Foamflower (a very sociable Level 5) dominates, followed by wild ginger and trillium (Levels 2 to 3) and just a few ferns (more independent at Level 1). Credit John Roger Palmour

What I love about this layering idea is that it gives gardeners flexibility. Those lower layers should be very biodiverse: lots of different plants covering the ground and providing stability. But diversity in this layer does not really look messy, because most of these plants are growing underneath our taller ones, so you don’t really see them.

In my garden, I have a corner with dry shade where I have a handful of shrubs that screens a busy road. Lately I’ve been adding white wood aster (Eurybia divaricata), Appalachian barren strawberry (Geum fragarioides) and Pennsylvania sedge and watching them fill the gaps. Upper layers, on the other hand, are the ones I consider the “design” layers because they shape your impression of the planting. You can arrange them naturalistically, or in neat clumps — whatever style you like. That’s the flexibility: The order and legibility of the upper layers combines with the diversity and functionality of the lower ones.

The really cool thing is you can combine this layering idea with the sociability idea. Those Level 1 and 2 sociability plants tend to be those taller upright plants you use in the top layers of your garden because they like to grow through others. The Level 3 to 5 plants tend to be your lower spreading ground-hugging species.

Q. So I am not shopping for plants solely as decorative objects, but for plants with a purpose — for instance, as a living mulch or a good companion to others. Of course none of that, neither the “sociability” nor the plant’s layer, is on the plant labels. A tag might say “for containers or landscapes” or that the plant is “trailing” or “upright” or “mounding,” but that’s about it. What should the label say to help me put plants together successfully?

A. My dream label would describe things that are actually useful to understanding how it grows. It would describe its shape, its root system (taprooted, deep fibrous roots, shallow horizontal roots); its life span (a short-lived pioneer like columbine, or a long-lasting lavender); its sociability level; its adaptation to stress (quick-establishing, but short-lived ruderal species like Gaura lindheimeri or Nassella tenuissima; a thuggish, fast-spreading competitor like Monarda didyma; or a slow but steady stress-tolerator like Hosta or Calamintha). These are really the factors that explain how it will grow in our gardens.

Q. Where can we learn more? Being Northeastern, I love studying plants on the Go Botany plant finder from the New England Wildflower Society, for instance.

A. The Mt. Cuba Center, the Lady Bird Johnson Wildflower Center and the California Native Plant Society websites all have excellent information about how a plant grows in the wild and what it grows with. But mostly, I think gardeners can get to know their plants by going outside and getting reacquainted. Take a look at their shape, how they spread and see what they are trying to show you. You can learn a lot.

https://www.nytimes.com/2017/04/30/style/understanding-what-makes-plants-happy.html?nytmobile=0&_r=0

The Japanese practice of ‘Forest Bathing’ is scientifically proven to improve your health

The tonic of the wilderness was Henry David Thoreau’s classic prescription for civilization and its discontents, offered in the 1854 essay Walden: Or, Life in the Woods. Now there’s scientific evidence supporting eco-therapy. The Japanese practice of forest bathing is proven to lower heart rate and blood pressure, reduce stress hormone production, boost the immune system, and improve overall feelings of wellbeing.

Forest bathing—basically just being in the presence of trees—became part of a national public health program in Japan in 1982 when the forestry ministry coined the phrase shinrin-yoku and promoted topiary as therapy. Nature appreciation—picnicking en masse under the cherry blossoms, for example—is a national pastime in Japan, so forest bathing quickly took. The environment’s wisdom has long been evident to the culture: Japan’s Zen masters asked: If a tree falls in the forest and no one hears, does it make a sound?

To discover the answer, masters do nothing, and gain illumination. Forest bathing works similarly: Just be with trees. No hiking, no counting steps on a Fitbit. You can sit or meander, but the point is to relax rather than accomplish anything.

“Don’t effort,” says Gregg Berman, a registered nurse, wilderness expert, and certified forest bathing guide in California. He’s leading a small group on the Big Trees Trail in Oakland one cool October afternoon, barefoot among the redwoods. Berman tells the group—wearing shoes—that the human nervous system is both of nature and attuned to it. Planes roar overhead as the forest bathers wander slowly, quietly, under the green cathedral of trees.

From 2004 to 2012, Japanese officials spent about $4 million dollars studying the physiological and psychological effects of forest bathing, designating 48 therapy trails based on the results. Qing Li, a professor at Nippon Medical School in Tokyo, measured the activity of human natural killer (NK) cells in the immune system before and after exposure to the woods. These cells provide rapid responses to viral-infected cells and respond to tumor formation, and are associated with immune system health and cancer prevention. In a 2009 study Li’s subjects showed significant increases in NK cell activity in the week after a forest visit, and positive effects lasted a month following each weekend in the woods.

This is due to various essential oils, generally called phytoncide, found in wood, plants, and some fruit and vegetables, which trees emit to protect themselves from germs and insects. Forest air doesn’t just feel fresher and better—inhaling phytoncide seems to actually improve immune system function.

Experiments on forest bathing conducted by the Center for Environment, Health and Field Sciences in Japan’s Chiba University measured its physiological effects on 280 subjects in their early 20s. The team measured the subjects’ salivary cortisol (which increases with stress), blood pressure, pulse rate, and heart rate variability during a day in the city and compared those to the same biometrics taken during a day with a 30-minute forest visit. “Forest environments promote lower concentrations of cortisol, lower pulse rate, lower blood pressure, greater parasympathetic nerve activity, and lower sympathetic nerve activity than do city environments,” the study concluded.

In other words, being in nature made subjects, physiologically, less amped. The parasympathetic nerve system controls the body’s rest-and-digest system while the sympathetic nerve system governs fight-or-flight responses. Subjects were more rested and less inclined to stress after a forest bath.

Trees soothe the spirit too. A study on forest bathing’s psychological effects surveyed 498 healthy volunteers, twice in a forest and twice in control environments. The subjects showed significantly reduced hostility and depression scores, coupled with increased liveliness, after exposure to trees. “Accordingly,” the researchers wrote, “forest environments can be viewed as therapeutic landscapes.”

 Berman advised the forest bathers to pick up a rock, put a problem in and drop it. “You can pick up your troubles again when you leave,” he said with a straight face.

 City dwellers can benefit from the effects of trees with just a visit to the park. Brief exposure to greenery in urban environments can relieve stress levels, and experts have recommended “doses of nature” as part of treatment of attention disorders in children. What all of this evidence suggests is we don’t seem to need a lot of exposure to gain from nature—but regular contact appears to improve our immune system function and our wellbeing.

Julia Plevin, a product designer and urban forest bather, founded San Francisco’s 200-member Forest Bathing Club Meetup in 2014. They gather monthly to escape technology. “It’s an immersive experience,” Plevin explained to Quartz. “So much of our lives are spent interacting with 2D screens. This is such a bummer because there’s a whole 3D world out there! Forest bathing is a break from your phone and computer…from all that noise of social media and email.”

Before we crossed the threshold into the woods in Oakland, Berman advised the forest bathers to pick up a rock, put a problem in and drop it. “You can pick up your troubles again when you leave,” he said with a straight face. But after two hours of forest bathing, no one does.

Joy Chiu, a leadership and life coach on the forest bath led by Berman, explained that this perspective on problems lasts long after a bath, and that she returns to the peace of the forest when she’s far from here, feeling harried. “It’s grounding and I go back to the calm feeling of being here. It’s not like a time capsule, but something I can continually return to.”

https://qz.com/804022/health-benefits-japanese-forest-bathing/?utm_source=atlfb

The World Without Landscape Architects!

Lush vegetative planting at the Floating Gardens; credit: Turenscape

Alan Reisman’s gripping book “The World Without Us” details what would occur after a sudden vanishing of human life from the Earth. Nature would reclaim the built environment through processes that would begin within hours of the end of human intervention. But what if there were a world without “us,” as in those of us who guide change in the landscape, both throughout history and going forward? Here we will explore how things would have been different, as well as potential consequences going forward if the world was without landscape architects!

Urban Design

The idea of a “central park” is not unique to New York City. Many other cities of all shapes and sizes have developed around a communal green space that provides people with an area of respite away from the hustle and bustle of city life. Without landscape architects, what would have taken the place of parks? Government centers, massive transit hubs, and superstructures may have become the centerpieces to urban form. Without parks and public spaces as integral parts of daily life, perhaps people would have fled cities altogether in search of less claustrophobic surroundings.

Access to Nature

Landscape architects have played a crucial role in the planning of hiking trails, bikeways, and jogging paths that provide humans with a means of connectivity and recreation. Given the option, many people have opted to make a scenic bike ride to work a relaxing part of their day. On a larger scale, design has allowed for a wider audience to experience wonders of nature that were previously off limits or difficult to get to. By creating environmentally sensitive plans for state and national parks and other natural areas of interest, there is now incredible accessibility for all to take in the sights and sounds of the world’s most pristine places.

Ecology

The development of urban, rural, and suburban areas has reduced biodiversity at varying levels, but would have been much worse without ecologically minded people as part of the design team. By selecting native plantings and advocating for the removal of invasive species, we have prevented the total destruction of many of the Earth’s unique ecosystems. Just the existence of plants in cities helps filter air pollution and maintains a healthy air quality for urban inhabitants. On the fringes, strategic preservation and planting have saved species of plants and animals alike from extinction. Many of these are essential parts of biological cycles that provide food and medicine that we rely on heavily.

Erosion

  

The erosion of riverbanks and cliffs is a natural process, but the rate at which it occurs has been accelerated by human activities. Many rivers were dammed, widened, and dredged, leading to higher volumes of water. Although the speed of the water was slowed, the new barriers were not nearly as durable as the previous, naturally occurring edge conditions. Because of this, a large portion of landscape architectural work over the past century has been to stabilize riparian zones to prevent rivers from becoming too wide and subjecting developed areas to constant flooding.

Flooding

Stormwater management has been the hot button sustainability issue of late, but without the less flashy water solutions of the past, we would be in some serious trouble. Flooding would be rampant in areas with no natural drainage solutions, where we would have to rely on retention and detention ponds designed to function in different storm events. The loss of wetlands reduces the amount of absorbent surface in the landscape. Incorporating floodable marshes and riverside buffers into master plans has prevented overflow and instituted diverse ecosystems. In the city, bio swales and rain gardens are assisting and replacing crumbling sewer infrastructure. If these sustainable methods of water catchment were to suddenly disappear, the rise in global urbanization would quickly overwhelm existing systems.

Granted, landscape architects weren’t the only ones involved in these innovations. Ecologists, horticulturalists, civil engineers, and architects have all played a role in the process. We have certainly taken the lead on bringing everyone to the table, and should continue to so. Can you think of other situations that would be very different without the presence of landscape architects?

Article written by Peter Salmon

http://landarchs.com/world-without-landscape-architects/

With Nature and Justice for All

Researching simulated environmental imagery to improve prison life.

Credit: Randy Lyhus

When a new inmate is booked into jail, it can be a pretty dismal experience for everyone involved. The prisoner may be angry or despondent, suffering from acute mental stress or illness, or under the influence of drugs or alcohol. On-duty staff attending to prisoner intake may feel tired or threatened (or both). It’s a combustible atmosphere, to be sure, and in the early hours and days of a prisoner’s term, concepts such as “rehabilitation” and “redemption” may not take hold.

At a Northern California jail, however, a relatively simple intervention has already improved conditions for staff and inmates. Based on research that illustrates the calming effects of simulated nature views, with support from the Academy of Architecture for Justice (AAJ) and the National Institute of Corrections, the Sonoma County Main Adult Detention Facility now boasts a large-scale photo mural of bucolic grassland on one wall of the booking area. Just six weeks after the mural was installed, the team of researchers—led by Jay Farbstein, FAIA, Melissa Farling, AIA, and Polytechnic Institute of New York University environmental psychology professor Richard Wener, with assistance from arts and neuroscience researchers Upali Nanda and John Sollers—found measurable reductions in stress levels among both groups.

Since the 1980s, studies have shown that medical patients with views of nature—whether real (as in a garden) or simulated (as in a photographic mural)—experience accelerated recovery, lower blood pressure, and less anxiety. In the prison setting, at least one study has similarly demonstrated that prisoners with external views of nature have lower blood pressure than those who view only internal courtyards.

In October 2006, a group of architects, corrections administrators, and neuroscientists gathered to discuss the growing body of evidence that suggests that correctional environments affect inmates and staff. “We looked at several aspects of the prison environment and how they might affect the brain,” Farbstein says, “including the visual environment, the acoustic environment, the impact of light on circadian rhythms, crowding and social functions, and staff–inmate ratio.” The Sonoma County project grew out of that exercise.

Compared to most other jails, the Sonoma County detention center was already considered a next-generation facility that placed greater emphasis on human comfort. The intake space was bright and airy, with a waiting-room atmosphere in which most inmates are booked across an open counter rather than shuffled down dark corridors. “It already was a less stressful environment than 80 to 90 percent of intake areas,” Farbstein says. “There were a lot of things about it that already suggested a lower level of stress.”

It was an ideal environment in which to test their hypothesis. The team initially considered adding live houseplants to the space, which could have been a security risk (as pots and twigs could be used as weapons), and the idea was ultimately deemed less effective than a large-scale mural. Once they centered on that approach, the team chose a mural of savannah grassland that was previously used in a medical setting to positive effect. In addition to the main mural, which measures about 9 feet by 24 feet and was installed in the waiting room, an additional mural of the same image was mirrored to fill a longer and narrower 2-feet-by-38-feet space near the ceiling in the holding-cell area.

The depicted landscape has all the hallmarks of a calming nature scene, Farling says, including open views, enough trees to provide shade and shelter, and a still, nonturbulent water source. Again, the team pointed to previous research indicating humans’ primal connection to the savannah landscape. Architects may also appreciate that the mural simply represents the classic design principle of “prospect and refuge.”

To determine stress levels, the research team chose to record a particular measure of staff heart rates (inter-beat intervals), which was considered less invasive than, say, testing for levels of salivary cortisol—another stress indicator that would require users to chew on a piece of cotton. Comparing heart rates of staff pre- and post-mural showed a measurable reduction in stress at the end of their shifts after the mural was installed. There was also a marked reduction in the staff stress indicators from the beginning to end of their shifts from the pre-mural to the post-mural period.

Farbstein said they are intrigued by the implications that the research may have for the potential of such interventions to reduce stress levels in inmates and that, if stress and other factors are reduced, inmates may be better able to participate effectively in rehabilitation programs. He and his colleagues are seeking more funding to take their research further
.
“If you are in a jail that believes in rehabilitation and offers rehabilitation programs,” Farbstein says, “when you have inmates who are less stressed, getting more sleep, and are better able to learn, I think it’s a reasonable hypothesis that they would ultimately have greater success.”
Learn more about the AIA Academy of Architecture for Justice at aia.org/aaj.

http://www.ecobuildingpulse.com/performance-metrics/with-nature-and-justice-for-all.aspx

Biophilic Cities: What Are They?

Central Park in New York City, a world landmark of biophilia and nature preservation.   Biophilia is a term popularized by Harvard University myrmecologist and conservationist E.O. Wilson to describe the extent to which humans are hard-wired to need connection with nature and other forms of life. More specifically, Wilson describes it this way: “Biophilia…is the innately emotional affiliation of human beings to other living organisms. Innate means hereditary and hence part of ultimate human nature.” (Wilson, 1993, p.31). To Wilson biophia is really a “complex of learning rules” developed over thousands of years of evolution and human-environment interaction.

Evidence of the emotional and psychological benefits of nature is mounting and impressive (research shows its ability to reduce stress, to aid recovery from illness, to enhance cognitive skills and academic performance, to aid in moderating the effects of ADHD, autism and other child illnesses). Recent research suggests even that we are more generous in the presence of nature; all these values are in addition to the immense economic value of the ecological services provided by natural systems. Support for the practice of biophilic design has been growing and there are now many exemplary examples of buildings that seek to integrate natural features and qualities. We recognize the need for biophilic workplaces, for healing gardens and spaces in hospitals, and for homes and apartments that provide abundant daylight, natural ventilation, plants and greenery. Less attention, however, has been focused on the city or urban scale, despite the fact that the planet continues an inexorable trend in the direction of urbanization. Urban residents need nature more than ever, and much work is needed to find creative and effective means for incorporating it into urban environments. It is likely that the benefits of close contact with nature are deeper and even more profound, and the potential to make a difference by integrating nature directly into our lives, even greater than we realize. Nature ought not to be an afterthought, and ought not to only be viewed in terms of the (considerable to be sure) functional benefits typically provided (benefits of trees, green rooftops, wetlands for managing stormwater, for mediating air and water pollutants, for addressing urban heat island effects, and so on). The elements of a deeper concept of integrating nature into everyday living include a recognition of some of the following:

Important Ties to Place. There are considerable place-strengthening benefits and place-commitments that derive from knowledge of local nature; from direct personal contact; enhanced knowledge, and deeper connections = greater stewardship, and willingness to take personal actions on behalf of place and home; Connections and Connectedness. Caring for place and environment, essential for human wellbeing and in turn essential ingredient in caring for each other; A Need for Wonder and Awe in Our Lives. Nature has the potential to amaze us, stimulate us, propel us forward to want to learn more and understand more fully our world; Nature adds a kind of wonder value to our lives unlike almost anything else; Meaningful Lives Require Nature. The qualities of wonder and fascination, the ability to nurture deep personal connection and involvement, visceral engagement in something larger than and outside oneself, offer the potential for meaning in life few other things can provide;

Urbanists and city planners have special opportunities and unique obligations to advance biophilic city design, utilizing a variety of strategies and tools, applied on a number of geographical and governmental scales. The agenda is one that must extend beyond conventional urban parks, and beyond building-centric green design. It is about redefining the very essence of cities as places of wild and restorative nature, from rooftops to roadways to riverfronts. It is about understanding cities as places that already harbor much nature and places that can become, through bold vision and persistent practice, even greener and richer in the nature they contain.   What a biophilic city is or could be is an open question, and it is hoped that this website will help to stimulate discussion of this. As a tentative starting point I offer some of the following as key qualities of biophilic cities:           Biophilic cities are cities of abundant nature in close proximity to large numbers of urbanites; biophilic cities are biodiverse cities, that value, protect and actively restore this biodiversity; biophilic cities are green and growing cities, organic and natureful; In biophilic cities, residents feel a deep affinity with the unique flora, fauna and fungi found there, and with the climate, topography, and other special qualities of place and environment that serve to define the urban home; In biophilic cities citizens can easily recognize common species of trees, flowers, insects and birds (and in turn care deeply about them); Biophilic cities are cities that provide abundant opportunities to be outside and to enjoy nature through strolling, hiking, bicycling, exploring; biophilic cities nudge us to spend more time amongst the trees, birds and sunlight. Biophilic cities are rich multisensory environments, the where the sounds of nature (and other sensory experiences) are as appreciated as much as the visual or ocular experience; biophilic cities celebrate natural forms, shapes, and materials; Biophilic cities place importance on education about nature and biodiversity, and on providing many and varied opportunities to learn about and directly experience nature; In biophilic cities there are many opportunities to join with others in learning about, enjoying, deeply connecting with, and helping to steward over nature, whether though a nature club, organized hikes, camping in city parks, or volunteering for nature restoration projects. Biophilic cities invest in the social and physical infrastructure that helps to bring urbanites in closer connection and understanding of nature, whether through natural history museums, wildlife centers, school-based nature initiatives, or parks and recreation programs and projects, among many others; Biophilic cities are globally responsible cities that recognize the importance of actions to limit the impact of resource use on nature and biodiversity beyond their urban borders; biophilic cities take steps to actively support the conservation global nature; These are but a few of the ways a city might be seen as biophilic. What do you think? Are there other ways, and other important qualities or dimensions not listed above? http://biophiliccities.org/biophiliccities.html

Will bioluminescent trees replace streetlights?

Bioluminescent Trees Courtesy Alberto T. Estevez

Imagine taking a midnight stroll, your route lit by row upon row of trees glowing a ghostly blue. If work by a team of undergraduates at the University of Cambridge pans out, bioluminescent trees could one day be giving our streets this dreamlike look. The students have taken the first step on this road by developing genetic tools that allow bioluminescence traits to be easily transferred into an organism.

Nature is full of glow-in-the-dark critters, but their shine is feeble - far too weak to read by, for example. To boost this light, the team, who were participating in the annual International Genetically Engineered Machines competition (iGEM), modified genetic material from fireflies and the luminescent marine bacterium Vibrio fischeri to boost the production and activity of light-yielding enzymes. They then made further modifications to create genetic components or "BioBricks" that can be inserted into a genome.

The team managed to produce a range of colours by putting these genes into the Escherichia coli bacterium. They found that a volume of bacterial culture about the size of a regular wine bottle gave off enough light to read by.

"We didn't end up making bioluminescent trees, which was the inspiration for the project," says team member Theo Sanderson, who is studying genetics. "But we decided to make a set of parts that would allow future researchers to use bioluminescence more effectively." The team presented its findings earlier this month at the iGEM Jamboree, held at the Massachusetts Institute of Technology.

One major obstacle to harnessing bioluminescence is that the process relies on a class of compounds called luciferins. They emit light and are then converted into oxyluciferin, which cannot produce light. To counter this, the Cambridge team found a way to engineer BioBricks that would enable organisms to produce enzymes to recycle oxyluciferin.

Bioluminescent plants could appeal especially to people whose homes are not wired up to the electricity grid. These living lights have no breakable parts, and new lights can be made simply by growing more of them. The team calculates that for a bioluminescent tree to compete with a street light, only 0.02 per cent of the energy absorbed for photosynthesis would need to be diverted into light production.

So are glowing trees coming soon to a street near you? It's unlikely, says Alexandra Daisy Ginsberg, a designer and artist who advised the Cambridge team. "We already have light bulbs," she says. "We're not going to spend our money and time engineering a replacement for something that works very well."

However, she adds that "bio-light" has a distinctive allure. "There's something much more visceral about a living light. If you have to feed the light and look after it, then it becomes more precious."

http://www.newscientist.com/article/mg20827885.000-glowing-trees-could-light-up-city-streets.html

The Adapters: Indigenous architecture provides some important lessons in building with nature rather than against it.

STILT HOUSES Chong Khneas, Cambodia. Nearly all traditional houses in Cambodia are built on stilts, so that they can adapt to the extreme difference in water levels between the dry and rainy seasons. Although they tend to vary according to region and wealth, common building materials include bamboo, straw, tile, and slate. dataichi - Simon Dubreull/Getty Images

Resilience is everywhere. Do we see it? Or do we conceal this essential component of our survival in clever engineering and hidden dynamics out of some cultural embarrassment? Contemporary features of structural resilience are known to builders, but must be taken on faith by citizens who find themselves more concerned with the fresh failures enabled by our digital age. We learn of the unanticipated vulnerability of urban residents who find themselves as alone and imperiled by a wireless network outage as they once were by fire and smoke.

The oldest human structures carry their message of resilience on the outside. Outward fragility guarantees flexibility in the face of the elements. Ease of construction ensures a quicker rebuilding and recovery. The diminutive scale contains the risk at the low end of potential casualties while always retaining the possibility of escape. These are structures built not to a code based on probabilities but dedicated to the certainty that while our earth delivers forces that cannot be withstood, it also always provides us with higher ground. Tides have lines, fires burn themselves out, and the ground eventually stops shaking.

We have serious challenges to our well-developed human resilience in a seven-billion-person world that finds itself concentrated in cities close to the water’s edge. It may require enormous energy and investment to retool our collective sense of resilience, to scale our expectations, and to be more ready than ever in human history to embrace sudden new realities and alternatives. But if we look carefully at the record of human success, it is our adaptations that distinguish us more than our loyalty to ancient traditions and inflexible values. The greatest monuments are the ones that vanished, succumbing to the narrative of erosion and change while humanity moved humbly forward. Despite the challenges of our era and the potentially grim mathematics of changes perhaps already in the cards, resilience, it can be said, is alive and well. Mostly, it is alive.

Read more:
http://www.metropolismag.com/story/20130207/the-adapters

How Urban Parks Enhance Your Brain

As the authors themselves conclude, the results really demonstrate, above all else, the salutary effects of a natural environment. "In sum, we have shown that simple and brief interactions with nature can produce marked increases in cognitive control. To consider the availability of nature as merely an amenity fails to recognize the vital importance of nature in effective cognitive functioning."

The second conclusion, more germane for our purposes, is that "incorporating nearby nature into urban environments may counteract" some of the cognitive strains placed on the brain by the city, the authors write. Recent research has suggested economic and crime benefits of urban greenery; now advocates can legitimately add "public health" to their list of arguments. Read more:


http://www.theatlanticcities.com/arts-and-lifestyle/2012/07/how-urban-parks-enhance-your-brain/2586/

The Green Wave: Sink or Swim

“The goal of life is living in agreement with nature.”

Zeno (335 BC-264 BC)

Sustainability is on the minds of every industry as the green movement has reached a critical mass. In the short time frame of fifteen years, green architecture and sustainable technologies have evolved from a radical fringe of ardent supporters to a generally accepted public mandate that is revolutionizing the entire world economy. Below the surface is a monumental shift in corporate thinking which is refining this brave new green world. Every industry will be challenged to make the shift to a new paradigm in order to prosper or even survive. The landscape and nursery industry has always been in the center of the green movement, but is not generally perceived as a leader which consistently brings innovation to the table. There can be no denying the magnitude of the sustainability movement as it becomes increasing codified in our daily life. The time is fast approaching for the landscape and nursery industry to assess its future and decide to either sink or swim in the mounting green wave. The commitment to become leaders in the sustainability movement will require dedication and innovation from both individual businesses as well as trade organizations.

The first question that arises is “what does it mean to be green?” Unfortunately, there are no publicly established policies or guidelines which are definitive, but rather a series of sometimes vague and confusing principals. Being green is easiest described as a way of thinking, in that every action shall do no wrong or diminish the earth’s resources for future generations. The difficult part is that every industry will be required to define these sustainable principals for their specific industry. Be assured that this process will not be simple and the rules will constantly change, but every industry will struggle in defining its role in the new green economy.

The origins of this green tidal wave can be traced back to a single document. In 1992, the City of Hanover, Germany hired architect William McDonough to craft a series of environmental principals to guide architects and planners in the development of exhibits for the 2000 World Expo to be held in Hanover. This short list of environmental goals came to be known as the Hanover Principals. Although over the years these sustainable principals have been expanded, interpreted, defined and debated, they are still the fundamental foundation of the sustainability movement.

As other industries begin to define their role in sustainability, they contribute useful tools which can help the landscape and nursery industry to find its way. Places to look for current thinking and valuable information include the United States Green Building Council (USGBC) www.usgbc.org, which has established the Leadership in Energy and Environmental Design (LEED) green building rating system. The American Society of Landscape Architects (ASLA) www.asla.org has established a strategic partnership with a number of environmental organizations called the Sustainable Site Initiative www.sustainablesites.org to establish a green site rating system for individual sites. There are a number of organizations such as “Cradle to Cradle Certification” www.mbdc.com/certified.html, which helps customers purchase and specify products that are pursuing a broader definition of quality environmentally-intelligent design. Industry specific guides are emerging such as the Certified Forest Products Council (CFPC) www.certifiedwood.org which provides information about sustainable forestry, and includes a directory of sustainably harvested lumber.

Although these organizations provide some insight in how sustainability is interrupted by other associations, none of the documents will address in detail the needs for the landscape and nursery industry. This will come from within the industry as we begin to look critically at the opportunities for changing traditional practices and replacing them with more environmentally friendly business practices. The initial areas for consideration are easy to identify such as business practices that negatively impact air quality, water quality, biodiversity and consumption of natural resources. Let’s look at each of these four simple opportunities in more detail as they might relate to traditional industry practices, knowing that there are dozens of other subjects that should be considered in mainstreaming sustainability into every aspect of the landscape and nursery industry.

Air Quality

With the emissions from operating and refueling of landscape equipment, vehicles have a significant impact on air quality. Small gasoline-powered engines often produce much greater levels of pollution than that of a full sized car per hour of operation. The estimates can be as much as 1000 times more emissions are produced from small gasoline-powered engines. When these engines are mistuned, or run without air filters, measurements show as much as 50% of the fuel exhausted as unburned hydrocarbons. The EPA estimates that as much as 5% of urban air pollution can be linked to their usage. Considering the entire carbon footprint of the landscape and nursery industry, the consequences are significant.

A sustainable approach would minimize air pollution by investing in hybrid or fossil free vehicle fleets as well as a mileage optimization on how those fleets are deployed each day. Small gas-powered engines can be replaced with electric powered equipment. While electric still has environmental impacts primarily in the manufacturing process, the total embodied energy used during the equipment’s life cycle cost is much less. The most environmentally friendly grounds maintenance equipment is human powered which does not rely on a power source. I believe there could be an emerging niche in the market for a premium priced high sustainability ground maintenance service.

Water Quality

The landscape and nursery industry applies a vast amount of chemical based pesticides and fertilizers which, even with the best management practices, are subject to leaching into stream ways and water courses. While monumental progress has been made in training grounds staff in the proper calibration and application of the chemicals, it does illustrate the industry’s reliance on preventative chemical use instead of prescriptive treatment of diseases. An enlightened chemical approach which reduces generic broad based preventative treatments in favor of selective targeted solutions would shift the chemical industry’s investment toward development of new softer solutions. A serious discussion in the landscape industry needs to challenge the reliance on traditional chemical approaches and foster greater acceptance of ecological based approaches.

The greatest impact the landscape and nursery industry has on water quality is in the management of construction activities through the primary responsibility for erosion control. Our experience indicates the landscape industry is only marginally engaged in erosion control. No other trade has a greater opportunity to express leadership in managing water quality during site grading and establishment of vegetation. This industry should be the foremost advocate and expert in site erosion control implementation. Accepting responsibility for the site can expand revenues for forward thinking companies.

With the increased development of suburban areas, more frequent and pronounced flooding has occured. This not only results in erosion, stream pollution, and destruction of aquatic habitat, but tremendous property damage and loss of human lives. Several compelling best management practices exist that the industry can use to help to reduce flooding and reuse a precious natural resource. These stormwater based solutions such as rain harvesting, rain gardens, green roofs and bioswales, while not new have garnered a new wave of public interest. The best thing about these stormwater technologies is that they easily fall into the traditional market of the industry. A concerted effort in promoting integrated stormwater solutions within the industry would represent another leadership position the industry could assume.

Declining Biodiversity

The world's biodiversity is declining at an unprecedented rate, with current extinction rates that are at least 900 times higher than natural rates found in the fossil record. Over 15,000 plant and animal species are now considered at risk of extinction representing an increase of 3,330 species since 2003. The landscape and nursery industry may contribute more to declining biodiversity than it does in preventing it. Consider the impacts of introduction of invasive plants into the landscape, clearing land, establishment of lawns, planting too few species that benefit wildlife, overuse of pesticides and dominant use of limited varieties of plants like Bradford pears and junipers.

When non-native plants "escape" from our landscape and take over natural areas they choke out the wide variety of native plants on which wildlife depends. Our desire for large lawn lots results in significant clearance of natural areas which fragments wildlife habitat. While less than 10% of all insects are harmful to plants, most pesticides are harmful or lethal to all insects. The industry maintains a dominant focus on horticultural planting strategies instead of advocating more complex ecological based plantings. We have become our own worst enemy in perpetuating traditional solutions as the basis of most designs.

A dramatic shift in conventional thinking is necessary to address sustainability in the core of the landscape and nursery industry. The industry needs to develop viable solutions to lawns and corporate landscapes in favor of diverse ecological natural communities which value biodiversity. We need to shift the basis of the green economy from low skilled lawn maintenance labor to more technically knowledgeable resource managers. Along with this paradigm shift comes increased market value and revenue opportunities. The need for biodiversity can be a catalyst in reforming traditional practices into a sustainable future.

Consumption of Natural Resources

The world only has a limited supply of natural resources and consumption rates are increasing. The United States is the world's largest consumer in absolute terms for many resources, eleven of the top twenty. Opportunities for using less are limitless when we look at our consumer economy. Principles for reducing consumption of natural resources can be applied to every aspect of business when you look at areas like packaging, recycling, specifying locally produced goods and use of low environmental impact materials.

Looking specifically at the landscape and nursery industry, specific opportunities emerge when we focus on business operations such as reducing fuel for landscape equipment, conserving water when irrigating plants, mitigating soil lost through erosion and eliminating peat moss or other harvested organic materials to amend soils. The green industry is indirectly responsible for 30% of water consumption in urban areas in the eastern United States for watering lawns, and in the West this figure is 60%. Guidelines for reduction or elimination of irrigation water are commonly available, but the environmental ethics need to be embraced by the entire industry. The green industry can be a powerful advocate in promoting sustainable solutions.

The world is shifting towards an environmental paradigm which fundamentally changes how we conduct every aspect of our lives. This green wave of change is upon us and it is our decision to sink or swim. We can allow the wave to overwhelm the industry or we can choose to participate as leaders riding the wave to a prosperous future of limitless opportunities. The future will be best defined for our industry internally by creative, innovative professions who have a passion for environmental change and civic commitment. By embracing the challenges to redefine our businesses practices at the most basis levels the industry will be guaranteed a meaningful front row seat in the new green economy. There is a lot of work to be done and a short amount of time available, so let’s get started in building a new green foundation for the future.

“Do not go where the path may lead, go instead where there is no path and leave a trail.”

Ralph Waldo Emerson