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View Resource Issues in Ecology, Issue 15: Excess Nitrogen in the U.S. Environment: Trends, Risks, and Solutions

It is not surprising that humans have profoundly altered the global nitrogen (N) cycle in an effort to feed 7 billion people, because nitrogen is an essential plant and animal nutrient. Food and...

View Resource Issues in Ecology, Issue 15: Press Release

This January 2012 press release introduces and describes the significance of issue #15 of ESA's Issues in Ecology series, "Excess Nitrogen in the U.S. Environment: Trends, Risks, and Solutions."

View Resource Issues in Ecology, Issue 16: The Role of Landscape Connectivity in Planning and Implementing Conservation and Restoration Priorities

Many conservation efforts focus on protecting and enhancing connectivity to offset the impacts of habitat loss and fragmentation on biodiversity conservation, and to increase the resilience of...

View Resource Issues in Ecology, Issue 17: Ecological Dimensions of Biofuels

The promise of biofuels as a renewable, environmentally friendly energy source has driven a worldwide expansion in their production. However, many questions remain about how to produce biofuels...

View Resource Issues in Ecology, Issue 18: Climate Change and U.S Natural Resources: Advancing the Nation's Capability to Adapt

Climate change is affecting land, water, and biodiversity in a variety of ways. While managing ecosystems and resources by relying on an expected set of climate conditions may have worked in the past...

View Resource Juvenile loggerhead sea turtle (Caretta caretta) in a plastic pail in South Carolina

Juvenile loggerhead sea turtle (Caretta caretta) in a plastic pail in South Carolina. Loggerheads are an endangered species, populations of which are declining in part due to human interference with...

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View Resource Lake levels and drought indices in northern Wisconsin: data, graphs, and photographs.

These materials include 25-year records of lake levels in 7 lakes in Northern Wisconsin, Palmer Drought Severity Index (PDSI) and precipitation; graphs illustrating changes in lake levels over time;...

View Resource Leaves as Thermometers

Plant morphology reflects evolutionary solutions to environmental constraints. In this experiment, students use this principle to predict the climate at their site. They collect and measure a set of...

View Resource Loggerhead sea turtle (Caretta caretta) hatchery in South Carolina

Image of a loggerhead sea turtle (Caretta caretta) hatchery in South Carolina. Nests are placed in an area where they are protected in varying degrees from natural or anthropogenic hazards. Efforts...

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View Resource Long Term Changes in Marine Fisheries

This Issue focuses on a research article by Barange (2003) that was published in Frontiers in Ecology and the Environment. The article discusses long-term (inter-decadal and longer) patterns of...

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