Nancy N. Rabalais – författare
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2 produkter
2 produkter
Häftad, Engelska, 1981
264 kr
Skickas inom 10-15 vardagar
Environmental Studies of a Marine Ecosystem reports the temporal and spatial variation of both the living and nonliving resources of the south Texas outer continental shelf. As the last major study to have been conducted before the Ixtoc oil spill in 1979, it is of great importance as a record of the baseline conditions and ecosystem characteristics for both biologists and chemists studying the effects of the Campeche disaster on the marine environment. The book is the culmination of three years of field studies conducted for the Bureau of Land Management and contains information on the climatology, hydrology, and sedimentology of the region as well as data on the pelagic and benthic biota, environmental hydrocarbons and trace metals, and the microbiology of the area. In addition to the ecosystem description, the data are integrated to expose ecological relationships that exist and to identify those specific variables which are most important for the assessment and management of environmentally damaging impacts to the area.
Del 58 - Coastal and Estuarine Studies
Coastal Hypoxia
Consequences for Living Resources and Ecosystems
Inbunden, Engelska, 2001
909 kr
Skickas inom 5-8 vardagar
Published by the American Geophysical Union as part of the Coastal and Estuarine Studies, Volume 58.Hypoxia is a condition that occurs when dissolved oxygen falls below the level necessary to sustain most animal life. In U.S. coastal waters, and in the entire western Atlantic, we find the largest hypoxic zone in the northern Gulf of Mexico on the Louisiana/Texas continental shelf. The area affected, which is about the size of the state of New Jersey at its maximal extent, has increased since regular measurements began in 1985. Sediment cores from the hypoxic zone also show that algal production and deposition, as well as oxygen stress, were much lower earlier in the 190Os and that significant increases occurred in the latter half of the twentieth century. We publish this book against the background of such measurements, and to review how the developing and expanding hypoxic zone has affected living resources on this continental shelf.