Hypoxia, nitrogen, and fisheries: integrating effects across local and global landscapes
Breitburg, D.L.; Hondorp, D.W.; Davias, L.A.; Diaz, R.J. (2009). Hypoxia, nitrogen, and fisheries: integrating effects across local and global landscapes, in: Carlson, C.A. et al. Ann. Rev. Mar. Sci. 1. Annual Review of Marine Science, 1: pp. 329-349. https://dx.doi.org/10.1146/annurev.marine.010908.163754 In: Carlson, C.A.; Giovannoni, S.J. (Ed.) (2009). Ann. Rev. Mar. Sci. 1. Annual Review of Marine Science, 1. Annual Reviews: Palo Alto. ISBN 978-0-8243-4501-3. 466 pp., more In: Annual Review of Marine Science. Annual Reviews: Palo Alto, Calif. ISSN 1941-1405; e-ISSN 1941-0611, more |  |
| Keywords | Chemical elements > Nonmetals > Atmospheric gases > Oxygen > Dissolved gases > Dissolved oxygen
Eutrophication
Fauna > Aquatic organisms > Aquatic animals > Fish
Water bodies > Coastal waters > Coastal landforms > Coastal inlets > Estuaries
Marine/Coastal | | Author keywords | low dissolved oxygen; eutrophication; estuaries; fish;macroinvertebrates; scale |
| Authors | | Top | - Breitburg, D.L.
- Hondorp, D.W.
- Davias, L.A.
- Diaz, R.J.
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| Abstract | Anthropogenic nutrient enrichment and physical characteristics result ill low dissolved oxygen concentrations (hypoxia) in estuaries and semienclosed seas throughout the world. Published research indicates that within and near oxygen-depleted waters, finfish and mobile macroinvertebrates experience negative effects that range from mortality to altered trophic interactions. Chronic exposure to hypoxia and fluctuating oxygen concentrations impair reproduction, immune responses, and growth. We present an analysis of hypoxia, nitrogen loadings, and fisheries landings in 30 estuaries and semien-closed seas worldwide. Our results suggest that hypoxia does not typically reduce systemwide fisheries landings below what would be predicted from nitrogen loadings, except where raw sewage is released or particularly sensitive species lose critical habitat. A number of compensatory mechanisms limit the translation of local-scale effects of hypoxia to the scale of the whole system. Hypoxia is, however, a serious environmental challenge that should be considered in fisheries management strategies and be a direct target of environmental restoration. |
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