From the April 2012 Conservationist
Trees for Tribs
Linking land, water and people
By Rebecca Moore
The regional forester notes my shoes. John Gibbs is in charge of all matters of public and private forest management for 11 counties with some of the largest acreages of working forest in the state, but at this moment, his concern is my socks becoming saturated with mud. I swap my respectable utility boots for his spare set of waders and finish unloading supplies from my vehicle. The sky is a uniform grey, and low, but it's not raining. "Rain is good for trees," Gibbs reminds us, and we're willing to spare a little comfort for the well-being of some tree seedlings.
Trees planted along streams help
regulate water flow and act as
natural filters for sediments and
nutrients like phosphorus and
nitrogen (Photo: James Clayton)
At a parking area next to Wentworth Bridge off NY-415 in Steuben County, the view of the wide valley is punctuated by rolling, forested uplands with steep slopes and flat tops. Today, DEC's Trees for Tribs program is restoring some forest to a public fishing spot along the Cohocton River. "Tribs" refers to tributaries, and describes streams in the context of a whole network of water bodies and ecosystems which rely on one another. My forester colleague, a serious fisherman, calls our tree-planting effort "Trees for Trout," an equally applicable title for its benefit to fish habitat and tributary health.
The fishing is particularly fine on the Cohocton, but as our volunteers can attest, you won't find fish in these open river sections. The tree canopies that shade land and water from sunlight and keep summer water temperatures cool enough for fish to spawn are nonexistent here, and the soil appears to be ready to let go and make a trip downstream. Community members recognized they could change that by planting trees to create a riparian forest buffer: a natural filter and protective layer between land and water.
Trees for Tribs was conceived by DEC's Hudson River Estuary Program to help reverse the state of denuded streamsides and associated problems affecting the Hudson Valley. Many of these streamside corridors, like the bank we're on today, have been cleared of forest for generations for farming or development. The sight of pasture blanketing a valley right up to the water's edge is familiar to many of us, but deforestation dishevels rivers, affecting stabilization, filtration, shading and cooling, habitat, and water absorption in an area. In developed areas, the increased runoff created from buildings, driveways and yards can cause some landowners to have receding properties as once babbling creeks turn into sizable channels, jagged with exposed soil.
When trees are planted along stream
corridors, their roots help keep the ground
in place so soil is not washed away, like
what has happened here. (Photo: James
Planting riparian buffers is like putting up that tent rainfly you think you won't need until you wake up and realize you're in a rainstorm. Extreme weather events can cause a tremendous amount of damage to unprotected stream corridors. Trees typically help streams flow more steadily, regulating flow of water over the surface in the spring, absorbing water through roots, and keeping the ground moist in the summer. After major storms, rivers swell outside their banks in part because forests would typically retain runoff and reduce overall volume of the stream. Without tree roots to hold the ground in place, soil is washed away. A forested strip along a stream corridor also improves water quality. A 35- to 150-foot forest buffer acts as a filter for sediments and pollutants like phosphorous and nitrogen. These are both essential nutrients for crop growth and lawn care, but when they occur in excess these nutrients can suffocate streams, causing algae buildup that depletes oxygen.
Beyond the pavement, the ground is soft, and closer to the river not all of last week's floodwaters have receded. We step carefully until we're used to the muck shifting beneath our feet, then plod along the streamside with buckets of tree seedlings soaking in water. Gibbs gives instructions. The eight local Cub Scouts and members of the local Trout Unlimited chapter who are helping out listen intently. Most of the kids and their parents have never planted a tree, especially one along a tributary stream. We survey this zone and interpret the flood line from spring's most recent hammering of rain and thaw. Based on the low and high points, we determine which of our native tree and shrub seedlings will best survive in this landscape. Despite the rain we are all having fun, and along the way, the third-grade boys squeeze mud between their hands.
As we place each seedling into the earth, the group's sense of satisfaction grows. Last summer's floods reminded us of the importance of stream buffers. There is good sense in repairing the natural systems meant to contend with natural disasters, and we realize that our personal activity can affect larger change.
In the three short years that the Trees for Tribs program has been in existence, thousands of volunteers have planted approximately 28,000 seedlings along 70,000 feet of stream in the Hudson Valley. In 2011, DEC began expanding the program to include the Champlain, Susquehanna and Mohawk Basins. Unlike the pace of our cultures's technological change, the improvements to these tributaries will take time. It may be some 40 years before these trees reach maturity, but the benefits will last for generations.
Today, we will keep planting tomorrow's trees, one seedling at a time.
Rebecca Moore is the NYS Trees for Tribs coordinator in DEC's Division of Lands and Forests.
Photo: James Clayton