Showing posts with label Natural Areas. Show all posts
Showing posts with label Natural Areas. Show all posts

Wednesday, January 3, 2007

Surveying Newton’s Nature

“I first came to Newton with preconceived ideas regarding the quality of urban-centered conservation areas…I did not really think that I would find much of interest…how terribly wrong I was.  Newton’s conservation areas are rich in beauty and wildlife,” said consultant John Richardson in his 1996 report to the Board of Aldermen. 

Ten years later, a group of volunteers from the non-profit Newton Conservators have been out walking once a week to document the current status of Newton’s natural open spaces.  They are carefully noting every type of tree, shrub, fern, wildflower, and wildlife they encounter.  They are particularly noting invasive species that may be crowding out native plants. And they are noting where illegal dumping may be endangering these environments.

Where Richardson looked closely at seven areas, the Conservators have tackled over 30 sites, as part of their mission to preserve and maintain open spaces in Newton for public use and enjoyment.

“We wanted to do something outdoors, hands-on to preserve these places,” says Beth Schroeder, co-chair of this land management committee with Cris Criscitiello.  “We didn’t even know where all these open spaces were until we met with Martha Horne of the Newton Planning Department.  My interest came from enjoying my own garden, doing landscape design for clients, and wanting to know more about which plants are native to this area.”

Says Criscitiello, a retired physician, “We initially intended a survey of what’s growing in the different conservation habitats in Newton, in the wetlands and elevated hillsides, the sunny areas and shady areas.  We wanted people to have a good time walking around and really seeing things.”

Florrie Funk, a member of the committee notes that “it’s hard to appreciate what’s here if all you do is look around and see green stuff.  If you can identify trees and shrubs, it becomes more exciting and you’re more likely to be interested in protecting good native plants.”

Funk is particularly interested in identifying and preventing the spread of invasive species.  Plants like Japanese knotweed, goutweed, garlic mustard, purple loosestrife and Oriental bittersweet tend to crowd out native plants.  Even though some invasives may be attractive plants, they are tending to endanger rare and beautiful native species, such as gentians and cardinal flowers. 

The volunteer group has a fern expert, bird experts, people particularly interested in wildflowers and mushrooms, even a research botanist who is an expert in plant classifications.  They are waiting for their vernal pool expert to have time to help identify amphibians.  When an expert cannot immediately identify something, they turn to their Field Guides and even take photos to match up on internet sites.

The group intends to keep up their weekly survey trips all winter long.  “Even in the snow and ice, we can identify trees and bushes by their structure, the shape of their leaf buds and whether the leaves grow opposite each other or in an alternating pattern,” says Schroeder.

Thus far the group has produced extensive spreadsheets with checkmarks indicating every time any of hundreds of species has been found in each of the 30 Newton conservation sites. “This document establishes a baseline of existing species, which allows us to detect changes over time,” Schroeder notes.

“As we get the information we compare it with the 1996 Richardson report,” says Criscitiello.  “We would also like to track the species during different seasons and make all the information available for educational purposes on our website (NewtonConservators.org), at the library, in the Newton Planning Department, and in an episode of the Environmental Show on NewTV.”

 “We could use an insect expert in our group,” he says.  Funk adds that it would also be nice to have someone who knows grasses and sedges.  “To identify sedges, you have to look at the seeds under a microscope,” she notes.

Has the group identified anything surprising thus far?  “We have found over twenty types of ferns, Jack-in-the-pulpit, pink lady’s slipper, trout lily, bloodroot, trillium and huge sassafras trees,” says Schroeder.  “There are a lot of things you wouldn’t see unless you look carefully.  Our group has located many of the plants listed in Richardson’s 1996 report and quite a few new ones.”

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Thursday, September 14, 2006

Ecological gardening

 

You can turn a yard into a wildlife-friendly, water-saving, low maintenance, naturally beautiful place without pesticides and chemical fertilizers.  It might require a change of perspective.

Turf grass has become a staple of American life.  The consensus seems to be that green grass lawns are a safe place for children to play, a haven away from stressful daily lives and a way to connect with nature and neighbors.  But these turfs are far from a natural occurring phenomenon and usually aren’t “safe” at all (see wording of sign above).

Americans’ love of lawn stems, in part, from early English gardens, which incorporated grass as an art form.  British landscape painters of the early 18th century entrenched this vision by painting vast expanses of grass lawns as the ideal living situation.  European settlers brought these preferences to North America.  Advertisements and television shows highlight lush green turf lawns and envious neighbors (e.g. “the grass is always greener . . .”), making many believe that this is the only option for an attractive yard.

In reality, expansive turf and tidy exotic planted beds are far from ideal.  The application of pesticides—herbicides, insecticides, fungicides and rodenticides—and synthetic fertilizers needed to maintain lawns and many plant species present serious environmental and health risks.  An alternative called “ecological landscaping” that minimizes the use of pesticides and fertilizers and maximizes the use of natural landscape elements suited to local climate and geography offers a wiser, practical alternative. 

Ecological landscaping involves preserving native vegetation, landscaping with new native plants, shrubs and trees and if desired, adding non—invasive ornamentals that complement and do not out-compete native vegetation. A complementary approach—organic landscaping—uses no synthetic pesticides, fertilizers or soil amendments; its land care practices take into account the local ecosystem, benefiting the whole web of life.  (Another definition of “organic” may confuse people:  in chemistry, any molecule with a carbon atom is called “organic.”)

Ecological and organic landscaping benefit not only the yard owner and user but the whole environment because what we put into our yards eventually ends up in the air, water and soil.  The US Geological Survey’s National Water Quality Assessment for the decade of 1991-2001 found detectable concentrations of pesticides in water more than 90 percent of the time across all streams sampled that had significant agricultural or urban land use in the watersheds.  More than 80 percent of urban streams had concentrations in water of at least one pesticide that exceeded a water-quality benchmark for aquatic life set by the Environmental Protections Agency. 

The advantages of ecological and organic landscaping are significant.  Better wildlife habitat is created, thus helping to protect biodiversity.  Native varieties usually require much less water and they can provide erosion protection, especially near bodies of water or on steep slopes.  There is less noise and air pollution from lawn mowers, weed whackers and leaf blowers when these machines are used infrequently.  Cost savings is a great benefit too, achieved through fewer inputs to the yard.  Less obvious benefits are lower health risks from pesticides, fertilizers, and gasoline fumes. 

The key principles of Ecological Landscaping are:

a)    maintain as much as possible of the pre-existing landscape, including soil, rocks and contours;

b)    integrate components with surrounding natural vegetation to rejoin native habitat;

c)    identify and remove non-native invasive plants;

d)    use native varieties of plants and ground covers that are appropriate for the soil type, moisture content, and climate conditions;

e)    use water-efficient/drought-tolerant plantings;

f)      provide plant species of varying height—grasses, flowers, shrubs, and trees—to provide food, hiding places, nesting and over-wintering sites;

g)    minimize the use of pesticides to control weeds, insects and rodents;

h)    use compost and other natural products for fertilizer and mulch.

More information:  Ecological landscaping Association website:  www.ela-ecolandscapingassn.org; MA Executive Office of Environmental Affairs booklet:  More than Just a Yard:  Ecological Landscaping Tools for Massachusetts Homeowners.  www.Mass.gov/envir/mwrc/pdf/More_Than_Just_Yard.pdf, and www.organiclandcare.net (list of accredited organic landscape professionals from the Organic Land Care Committee of CT and MA.

Michelle Portman is an environmental planner/analyst and the author/illustrator of “Compost, by Gosh! An Adventure with Vermicomposting”. 

This article is archived at www.greendecade.org/environmentpage

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