Coastal Hypoxia: Consequences for Living Resources and Ecosystems

Description

Published by the American Geophysical Union as part of the Coastal and Estuarine Studies Series. 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. Content: Chapter 1 Hypoxia in the Northern Gulf of Mexico: Description, Causes and Change (pages 1–36): Nancy N. Rabalais and R. Eugene Turner Chapter 2 Impacts of Changing Si/N Ratios and Phytoplankton Species Composition (pages 37–48): Quay Dortch, Nancy N. Rabalais, R. Eugene Turner and Naureen A. Qureshi Chapter 3 Zooplankton: Responses to and Consequences of Hypoxia (pages 49–60): Nancy H. Marcus Chapter 4 Distribution of Zooplankton on a Seasonally Hypoxic Continental Shelf (pages 61–76): Naureen A. Qureshi and Nancy N. Rabalais Chapter 5 Pelagic Cnidarians and Ctenophores in Low Dissolved Oxygen Environments: A Review (pages 77–100): Jennifer E. Purcell, Denise L. Breitburg, Mary Beth Decker, William M. Graham, Marsh J. Youngbluth and Kevin A. Raskoff Chapter 6 Physiological Responses to Hypoxia (pages 101–114): Louis E. Burnett and William B. Stickle Chapter 7 Responses of Nekton and Demersal and Benthic Fauna to Decreasing Oxygen Concentrations (pages 115–128): Nancy N. Rabalais, Donald E. Harper and R. Eugene Turner Chapter 8 Overview of Anthropogenically?Induced Hypoxic Effects on Marine Benthic Fauna (pages 129–145): Robert J. Diaz and Rutger Rosenberg Chapter 9 Benthic Foraminiferal Communities in Oxygen?Depleted Environments of the Louisiana Continental Shelf (pages 147–163): Emil Platon and Barun K. Sen Gupta Chapter 10 Effects of Hypoxia and Anoxia on Meiofauna: A Review with New Data from the Gulf of Mexico (pages 165–184): Markus A. Wetzel, John W. Fleeger and Sean P. Powers Chapter 11 Effect of Hypoxia/Anoxia on the Supply and Settlement of Benthic Invertebrate Larvae (pages 185–210): Sean P. Powers, Donald E. Harper and Nancy N. Rabalais Chapter 12 Effects of Seasonal Hypoxia on Continental Shelf Benthos (pages 211–240): Nancy N. Rabalais, Lorene E. Smith, Donald E. Harper and Dubravko Justic Chapter 13 Effects of Low Dissolved Oxygen on the Behavior, Ecology and Harvest of Fishes: A Comparison of the Chesapeake Bay and Baltic?Kattegat Systems (pages 241–267): Denise L. Breitburg, Leif Pihl and Sarah E. Kolesar Chapter 14 Ecological Effects of Hypoxia on Fish, Sea Turtles, and Marine Mammals in the Northwestern Gulf of Mexico (pages 269–291): J. Kevin Craig, Larry B. Crowder, Charlotte D. Gray, Carrie J. McDaniel, Tyrrell A. Kenwood and James G. Hanifen Chapter 15 Effects of Hypoxia on the Shrimp Fishery of Louisiana and Texas (pages 293–310): Roger J. Zimmerman and James M. Nance Chapter 16 Distribution of catch in the Gulf Menhaden, Brevoortia Paironus, Purse Seine Fishery in the northern Gulf of Mexico from logbook information: Are there relationships to the hypoxic zone? (pages 311–320): Joseph W. Smith Chapter 17 The Effects of Hypoxia on the Northern Gulf of Mexico Coastal Ecosystem: A Fisheries Perspective (pages 321–354): Edward J. Chesney and Donald M. Baltz Chapter 18 A Brief Overview of Catchment Basin Effects on Marine Fisheries (pages 355–370): John F. Caddy Chapter 19 Some Effects of Eutrophication on Pelagic and Demersal Marine Food Webs (pages 371–398): R. Eugene Turner Chapter 20 An Economic Perspective of Hypoxia in the Northern Gulf of Mexico (pages 399–424): Walter R. Keithly and John M. Ward Chapter 21 Hypoxia, Nutrient Management and Restoration in Danish Waters (pages 425–434): Daniel J. Conley and Alf B. Josefson Chapter 22 Future Perspectives for Hypoxia in the Northern Gulf of Mexico (pages 435–449): Dubravko Justic, Nancy N. Rabalais and R. Eugene Turner Chapter 23 Summary: Commonality and the Future (pages 451–454): R. Eugene Turner and Nancy N. Rabalais