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首页> 外文期刊>Estuarine Coastal and Shelf Science >Quantifying the impact of watershed urbanization on a coral reef: Maunalua Bay, Hawaii
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Quantifying the impact of watershed urbanization on a coral reef: Maunalua Bay, Hawaii

机译：量化流域城市化对珊瑚礁的影响：夏威夷毛纳鲁阿湾

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摘要

Human activities in the watersheds surrounding Maunalua Bay, Oahu, Hawaii, have lead to the degradation of coastal coral reefs affecting populations of marine organisms of ecological, economic and cultural value. Urbanization, stream channelization, breaching of a peninsula, seawalls, and dredging on the east side of the bay have resulted in increased volumes and residence time of polluted runoff waters, eutrophication, trapping of terrigenous sediments, and the formation of a permanent nepheloid layer. The ecosystem collapse on the east side of the bay and the prevailing westward longshore current have resulted in the collapse of the coral and coralline algae population on the west side of the bay. In turn this has lead to a decrease in carbonate sediment production through bio-erosion as well as a disintegration of the dead coral and coralline algae, leading to sediment starvation and increased wave breaking on the coast and thus increased coastal erosion. The field data and resulting coral reef ecohydrology model presented in this paper demonstrate and quantify the importance of biophysical processes leading to coral reef degradation as the result of urbanization. Coral restoration in Maunalua Bay will require an integrated ecosystem approach.
机译：夏威夷瓦胡岛毛纳鲁阿湾周围流域的人类活动已导致沿海珊瑚礁的退化，影响了具有生态，经济和文化价值的海洋生物种群。城市化，水流渠道化，破坏半岛，海堤以及在海湾东侧疏dr，导致受污染的径流水的体积和停留时间增加，富营养化，捕获陆源性沉积物以及形成永久性肾小球层。海湾东侧的生态系统崩溃和盛行的向西的西岸洋流导致海湾西侧的珊瑚和珊瑚藻种群崩溃。反过来，这又导致由于生物侵蚀而导致碳酸盐沉积物产量减少，以及死珊瑚和珊瑚藻的分解，导致沉积物匮乏，海岸上的波浪破碎增加，从而加剧了海岸侵蚀。本文介绍的现场数据和由此产生的珊瑚礁生态水文模型证明并量化了由于城市化而导致珊瑚礁退化的生物物理过程的重要性。恢复毛纳鲁阿湾的珊瑚将需要一种综合的生态系统方法。

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