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首页> 美国政府科技报告 >Nekton Densities in the Pascagoula River Estuary: Anthropogenic Effects on Essential Fish Habitat.
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Nekton Densities in the Pascagoula River Estuary: Anthropogenic Effects on Essential Fish Habitat.

机译：帕斯卡古拉河口的Nekton密度：对基本鱼类栖息地的人为影响。

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摘要

The Magnuson-Stevens Fishery Conservation and Management Act of 1996 requires the identification of Essential Fish Habitat (EFH) of species currently under Federal Fishery Management Plans (FMP's) as well as any future FMP species. Essential fish habitats are those that provide water and substrate necessary to fish for spawning, feeding, or growth, thus maintaining fisheries productivity and a sustainable fishery (Interim Final Rule, 1997 Federal Register 62:66551). The maintenance of EFH is vital to the health of an ecosystem, defined as one where .. ecological productive capacity is maintained, diversity of the flora and fauna is preserved, and the ecosystem retains the ability to regulate itself' (Interim Final Rule, 1997 Federal Register 62:66551). Estuaries of the northern Gulf of Mexico comprise many habitats that are essential for early life-stages of fishery species under FMP's such as brown shrimp, Farfantepenaeusaztecus, white shrimp, Litopenaeus setaceous, blue crab, Callinectes sapidus, and red drum, Sciaenops ocellatus. These habitats are also important for other bionomically important species, many of which can contribute to the production of these managed species. Unfortunately, many marsh habitats are being altered at an alarming rate (Hoss and Thayer 1993, Waste 1996, Thayer et al. 1996), and few studies have examined habitat use by early life-history.

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