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ecosystems

Science Simulations Support Salmon, Other Species

How do river ecosystems support fish? How do environmental changes influence the system’s capacity to support fish? And how might different restoration strategies influence fish? These are questions J. Ryan Bellmore, a research fish biologist who works in Juneau, Alaska, for the USDA Forest Service’s Pacific Northwest Research Station, and his partners set out to answer.

USDA and Partners Work to Eliminate Invasive Nutria From Maryland’s Eastern Shore

Word has it that legendary actress Greta Garbo could be seen wearing nutria fur coats back in the day, and nutria fur coats can still be found in vintage clothing stores around the world. Nutria, sometimes called swamp rats, were first introduced into the United States in the 1800s to be used in the fur trade. However, when the fur trade collapsed in the mid 1900’s thousands of nutria were released by ranchers who could no longer afford to feed and care for them. This invasive rodent, about half the size of a beaver, damages wetland ecosystems by eating away at their delicate vegetation. Nutria have since been found in at least 20 states.

U.S. Agricultural Production Systems of the Future: What Research is Needed Now?

Depending on where you live in the United States, the first thing that likely comes to mind for agriculture production systems are the large fields of corn, soybeans, wheat or cotton seen growing each summer. But spend a few minutes looking at CropScape, a color-coded map that charts where almost a hundred different types of U.S. crops are grown currently, and you begin to appreciate the diversity and regionality of production systems. This map shows that although there are U.S. regions where crop production is dominated by a few commodity crops, there are others where U.S. farmers are growing a wide array of fruit, vegetables, and other “specialty” crops. Agricultural Atlas maps produced by USDA’s National Agricultural Statistics Service show similar diversity in livestock production, including land in pasture and range production.