Doug Tallamy – 2 programs

Doug Tallamy, has spent years studying the relationship between plants and the insects they support. He is passionate about how to create biodiverse habitats in as many places as possible, including ones own landscape.

Enhancing Delaware Highways: Lessons from the Roadside

Dr. Susan Barton discusses how the lessons learned in planting and editing roadsides can be applied to a variety of landscapes and illustrate strategies for managing landscapes sustainably and provide guidelines for promoting native plants and combating invasive plants in public and private spaces.

Book Review – Braiding Sweetgrass: Indigenous Wisdom, Scientific Knowledge, and the Teachings of Plants

— This review by Anne Raver first appeared in WildfloraRI, Spring 2019

Robin Law Kimmerer begins Braiding Sweetgrass with the story of Skywoman, who falls from a hole in the Skyworld, clutching a bundle of branches with many fruits and seeds. She hurtles downward, in a shaft of light, where there was only darkness before, toward the murky water below. Many eyes in the sea are watching, and geese rise up to break her fall, holding her in their soft feathers. A great turtle offers his back for her to step upon, a muskrat dives deep into the water to bring a handful of mud from the depths below. Skywoman spreads the mud on the turtle’s shell, scatters the seeds in her hand, and dances the world from brown to green.

Kimmerer, a botanist and member of the Citizens Potawatomi Nation, combines science and the knowledge of her indigenous ancestors to contemplate the devastation that we humans, particularly descendants of the first white settlers, have wrought since first setting foot in the so-called New World (which, as Kimmerer points out, was only new to Europeans and other immigrants; to native inhabitants, it was as ancient as the creation story).

Kimmerer is a distinguished professor at the SUNY College of Environmental Science and Forestry in Syracuse, NY, where she also founded and directs the Center for Native Peoples and the Environment. The center works with tribal partners and students to integrate traditional ecological knowledge with scientific research for restoration and sustainability projects.

Kimmerer also is a poet and a storyteller, and Braiding Sweetgrass weaves together many threads– stories of her childhood, of her own children, of her graduate students, of desecrated lands and healed ones—with the page-turning power of a beautifully written novel. At the same time, her mind, sharpened by both science and the observational skills of her tribal elders, is constantly analyzing the particulars of any given situation, be it the near extinction of wild salmon in the Northwest, or the chemical toxins that Allied Chemical poured into Onondaga Lake, or the day her daughter refuses to recite the Pledge of Allegiance in elementary school. (Kimmerer recalls her own childhood participation in the puzzling ritual, with its reference to God and the republic: “And you didn’t have to be an eight-year-old Indian to know that ‘liberty and justice for all’ was a questionable premise.”)

As a Potawatomi, Kimmerer considers plants and animals her teachers; she was listening to the trees long before scientists discovered how they communicate through pheromones in the air and mycorrhizae, a vast symbiosis of fungi and roots beneath the forest floor. Sweetgrass, or “wiingaashk, the sweet-smelling hair of Mother Earth,” was one of the plants that Skywoman clutched in her hand, the day she fell out of that hole in the sky. It was a gift, just like all the other plants, just like the land itself, to be passed from hand to hand shared but never sold. A metaphor for sharing and reciprocity, rather than taking from the earth and others, Sweetgrass calls for a radical shift in consciousness.

As a teacher and activist, Kimmerer offers many examples of people working together to restore balance to the earth—to bring back salmon to their spawning grounds, to restore polluted lakes and salt marshes, to simply learn to listen to the plants and animals.

 

 

 

 

‘Canary in the Mine’ for the Salt Marsh

— This article by Deidre Robinson, Wenley Ferguson and Steve Reinert first appeared in WildforaRI, Spring 2019

If you’ve never experienced the sunrise over a salt marsh, inhaling the distinctive fragrance of hydrogen sulfide given off by decomposing smooth cordgrass (Spartina alterniflora) and hearing the dawn chorus of marsh birds, you might want to explore one sooner rather than later. The marshes are disappearing at an alarming rate.

The saltmarsh sparrow is an obligate salt marsh specialist, living only in the marshes along the east coast of the United States. Rhode Island provides critical habitat for several small pockets of this threatened species, whose population has plummeted by 75 percent since the 1990s. With accelerating sea level rises, tidal marsh losses of 0.5 to 1.5 percent annually are predicted, likely dooming this bird to extinction by 2040.

We first spotted this sparrow at Jacob’s Point Salt Marsh in Warren on a steamy July day in 2016 while conducting a survey of breeding birds for the Rhode Island Bird Atlas. She was stealthily returning to her nest to incubate four small eggs. Rather than fly directly to the nest and possibly reveal its location to a predator, she lands in a patch of salt meadow several meters from the nest, then zigzags through the grasses running much like a mouse, a strategy that has worked well for it for millennia.

Locating an active nest of this threatened species is always cause for celebration, but we had discovered a bird that had been previously banded–an extraordinary bonus. Contacting the Bird Banding Laboratory at the US Geological Survey in Laurel, MD, we learned that she had been banded in Florida in the fall of 2015. She had likely hatched at Jacob’s Point that spring, over-wintered in Florida, and returned to breed in Rhode Island the following summer. Weighing the equivalent of just three nickels, she made the arduous round-trip of 1440 miles and now holds the record for the longest migration distance for her species.

This discovery launched the Saltmarsh Sparrow Research Initiative (SSRI), a local citizen-science project to document the breeding ecology of this vulnerable bird. With permission from the Warren Land Conservation Trust (WLCT) to access its marsh property, we began a five-year comprehensive study of the sparrow, including documenting changes in the marsh flora and measuring the elevation of nests, which are increasingly vulnerable to flooding. (Read much more about our research on www.SALSri.org.)

During the first two years of our study, we banded 88 adult saltmarsh sparrows and found 101 nestlings. We also documented the elevation and surrounding vegetation for each of the 56 nests we located. We found that nests are increasingly subject to flooding, a finding consistent with other studies that report rising tides as the major threat to this species, which cannot survive in any other habitat.

This obligate species thrives in a healthy salt meadow community of Spartina for nesting, intermixed with saltgrass (Distichlis spicata), saltmarsh rush (Juncus gerardii) and maritime marsh- elder (Iva frutescens). Its breeding strategy is one of promiscuity, with males often perching on the marsh-elder to scan for females. (Typically, nests contain eggs fertilized by two to three different males.) The male is simply the sperm donor, who copulates with as many females as possible; the female is responsible for nest-building and feeding her young. She removes their fecal sacs and hunts for invertebrates in the grasses and water pools within close range of her nest. Nestlings must grow rapidly to develop from naked hatchlings to fully- feathered young birds, strong enough to climb out of the nest to higher ground or perhaps onto a marsh-elder before the flooding tides occur.

Nests have a domed canopy, which does help keep eggs from flooding out of the nest at high tides. The birds need about 26 days from nest construction until fledging, and lunar flood tides happen at least once every 28 days; this leaves very little margin for survival. Increasingly, marshes are also flooding before the peak high tides and again at mid-cycle, which dooms many nests. By measuring the elevation of all the nests, we hope to determine how high above sea level they must be for eggs and nestlings to survive.

The ebb and flow of the tides are vital to the health of the salt marsh and thus the survival of the sparrows. At the southern end of Jacobs Point, tidal flow was greatly restricted by old stone culverts that had collapsed under an elevated roadbed built in the 1930s. Without the flushing of salt water, Phragmites australis, a highly invasive common reed, had spread into the marsh. Increasingly, marshes are also flooding before the peak high tides and again at mid-cycle, which dooms many nests.

Working with the Land Trust, Wenley Ferguson of Save The Bay acquired funding in 2009 from the National Oceanic and Atmospheric Administration, the Natural Resources Conservation Service, and the Coastal Resource Management Council to oversee the design and installation of three new culverts. These arched culverts have increased tidal flow and created saltier water and less suitable conditions for Phragmites by flushing out the nutrient-rich runoff it thrives in. The culverts also drained standing water from the southern high marsh, where the saltmarsh sparrow nests. However, standing water in the high marsh to the north was still killing off marsh grass and degrading the peat, thus destroying still more of the saltmarsh sparrow’s habitat.

Save The Bay documented similarly degraded high marsh in a region-wide assessment of salt marshes in 2012 to 2013. This widespread degradation is largely attributed to accelerated sea level rise. To deal with standing water in the salt marsh to the north, shallow creeks, called runnels, were dug by hand and with a low-ground- pressure excavator. The runnels now drain surface water off the marsh, and high marsh vegetation is recolonizing the bare areas. The Land Trust and Save The Bay obtained funds for this project from the Coastal Resource Management Council and the Rhode Island Department of Environmental Management.

Another goal of this ongoing restoration effort is to protect a stand of native common reed, Phragmites americanus, from a highly aggressive stand of non- native Phragmites australis, which has expanded in the last two decades due to runoff from streets and development. Both Save The Bay and the Land Trust are meeting with property owners along Jacob’s Point to discuss better ways to keep storm water runoff from roofs and parking lots from reaching the marsh. Reducing runoff and restoring more of the high marsh habitat would give the saltmarsh sparrow a leg up in its race against sea rise.

In the first nesting cycle of 2017, only one nestling was strong enough to climb out of her nest before it flooded. After the Rhode Island state motto, we nicknamed her Hope. Her name also recalls the title of Emily Dickinson’s poem, which begins, “Hope is the thing with feathers…”

Authors Steve Reinert and Deirdre Robinson hold master’s degrees in Wildlife Sciences and Biology, respectively, from the University of Rhode Island. Both have spent decades studying birds on salt marshes in southeastern New England. At Jacob’s Point, Robinson and Reinert have worked with Wenley Ferguson, the Director of Habitat Restoration for Save The Bay, to help improve the ebb and flow of the tides through the salt marsh since the late 1990s.

Outdoor Learning: RIWPS Education Grant

A few years ago Charlestown Elementary School chose Outdoor Learning as a focus. The site was to include a short existing trail that ran through the woods, a large sand area and the parking lot.

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Winter Book Discussion: The Brothers Gardeners

During the afternoon of February 9,  eleven RIWPS members gathered in the comfortable living room of the Pilson house around a roaring fire. As if on cue a few snow flakes fluttered past the windows. Elaine Trench lead the discussion of “The Brother Gardeners” by Andrea Wulf.

Keep Our Native Plants Humming – Video Recording and Plant List

What you can do to support native bee pollinators in your landscape. Video recording of the October 2019 Lisa Loftland Gould Lecture by Dr. Gegear. Native Plant list by bee tongue length.

Peter Del Tredici

Peter has written:

“While most people have a negative view of spontaneous urban plants, they are actually performing many of the same ecological functions that native species perform in nonurban areas. ..absorbing excess nutrients that accumulate in wetlands; reducing heat buildup in heavily paved areas; controlling erosion along rivers and streams; mitigating soil, water, and air pollution; providing food and habitat for wildlife; and converting the carbon dioxide produced by the burning of fossil fuels into biomass.

The typical urban plant is well adapted to soils that are relatively fertile, dry, unshaded, and alkaline. Through a twist of evolutionary fate, many of these species have evolved life-history traits in their native habitats that are ‘pre-adapted’ them to flourish in cities.

 Marble or brick buildings, for example, are analogous to naturally occurring limestone cliffs. Similarly, the increased use of deicing salts along walkways and highways has resulted in the development of high-pH microhabitats that are often colonized by either grassland species adapted to limestone soils or salt-loving plants from coastal habitats. Finally, the hotter, drier conditions one finds in cities favor species that come from exposed, sunny habitats in nature.

Preadaptation is a useful idea for understanding the emergent ecology of cities because it helps to explain that some plants and not others grow on piles of construction rubble, chain-link fence lines, highway median strips, pavement cracks, and compacted turf.

While most biologists view invasive plants as a serious biological problem, the fact remains that their initial introduction and distribution were usually the result of deliberate decisions that reflected the economic, ornamental, or conservation values of the day. Between the 1930s and the 1960s, various federal, state, and local agencies encouraged— and often subsidized— the cultivation of plants such as kudzu, multiflora rose, and autumn olive for erosion control and wildlife habitat purposes. It should come as no surprise that they became major problems forty years later, after millions of them had been planted. Indeed, the spread of nonnative species across the landscape is as much a cultural as a biological phenomenon, a fact often overlooked by advocates of strict ecological restoration.”