Well-functioning food webs are fundamental for sustaining rivers as ecosystems and maintaining associated aquatic and terrestrial communities. The current emphasis on restoring habitat structure-without explicitly considering food webs-has been less successful than hoped in terms of enhancing the status of targeted species and often overlooks important constraints on ecologically effective...
This proposal by the Coniferous Forest Biome investigators requests support
for the third and fourth years of a highly integrated series of investigations
within the Ecosystem Analysis program of the United States effort under the
International Biological Program. The program for the Coniferous Forest Biome
has been approved by the...
The Columbia River Gillnetter is the pilot of the Lower Columbia River commercial fishing industry, keeping fishermen and the public in touch with today's important issues.
Relieving phosphorus loading is a key management tool for controlling Lake Erie eutrophication. During the
1960s and 1970s, increased phosphorus inputs degraded water quality and reduced central basin hypolimnetic
oxygen levels which, in turn, eliminated thermal habitat vital to cold-water organisms and contributed to the
extirpation of important benthic macroinvertebrate...
Disease, overharvesting, and pollution have impaired the role of bivalves on coastal ecosystems, some to the point of functional extinction. An underappreciated function of many bivalves in these systems is shell formation. The ecological significance of bivalve shell has been recognized; geochemical effects are now more clearly being understood. A...
This document contains a summary of changes in administrations and actions taken by the Pacific Marine Fisheries Commission in 1973, as well as an update for the status of various fisheries.