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Discipline Specific Core Concepts is Ecological Core Concepts -- Human impacts -- Agriculture and resource harvesting
Results 21 - 25 of 26
View Resource Issues In Ecology, Issue 06: Applying Ecological Principles to the Management of U.S. Forests

In this report forests are presented as very dynamic ecosystems, and processes such as nutrient cycling, nitrogen saturation, sedimentation, erosion, and forest fragmentation are described....

View Resource Sheep (Ovis aries) graze on a ridge at sunset in front of the Qilian Mountain Range in the northeastern region of the Tibetan Plateau.

Sheep graze on a ridge at sunset in front of the Qilian Mountain Range in the northeastern region of the Tibetan Plateau. A recent study investigated the effects of experimental warming and simulated...

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View Resource A variegated meadowhawk dragonfly (Sympetrum corruptum) perches in a California rice field.

A variegated meadowhawk dragonfly (Sympetrum corruptum) perches in a California rice field. Rice fields are widespread agricultural ecosystems that provide habitat for many wetland species, such as...

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View Resource A field planted with two kinds of cotton (Gossypium sp): Bt cotton and normal cotton, where the normal cotton acts as a refuge for insects.

Some rows of the field in the photograph contain cotton plants (Gossypium sp) that are genetically engineered to produce a toxin from the bacterium Bacillus thuringiensis (Bt). Bt kills insects that...

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View Resource Issues in Ecology, Issue 11: The Role of Nearshore Ecosystems as Fish and Shellfish Nurseries

This report defines the role of nearshore ecosystems, such as wetlands and seagrass meadows, as nurseries for populations of fish and shellfish that may be of commercial value to humans. The...

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