The nearshore phosphorus shunt: a consequence of ecosystem engineering by dreissenids in the Laurentian Great Lakes
The nearshore phosphorus shunt: a consequence of ecosystem engineering by dreissenids in the Laurentian Great Lakes
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DOI：
10.1139/f04-065
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发表时间：
2004-07-01
影响因子：
2.4
通讯作者：
Howell, T
中科院分区：
文献类型：
--
作者：
Hecky, RE;Smith, REH;Howell, T
德雷塞尼德贻贝在北美的湖泊和河流中是非常成功的入侵者，特别是在劳伦特五大湖的下游。作为底栖滤食性动物，它们能够附着在坚硬的底质上，其在近岸沃茨中的生物量和过滤活性之大前所未有。德赖森一个概念模型，近岸分流，试图描述一个基本的营养和能量流的重新定向随之建立德赖森。该模型解释了五大湖中出现的一些问题，如刚毛藻在一些沿海地区重新出现，而近海磷浓度仍然很低，并强调需要更多研究的领域。颗粒营养物输入的dreissenids和从底栖生物群落输出的材料的命运的来源是至关重要的，以了解dreissenids在湖泊中的作用，并评估目前的模式管理营养物和渔业的适用性。近岸分流将需要更严格的磷管理湖泊强烈影响的dreissenids，以保持近岸水质。
Dreissenid mussels have been exceptionally successful invaders in North American lakes and rivers, especially in the lower Laurentian Great Lakes. As benthic filter feeders capable of attaching to hard substrates, the magnitudes of their biomass and filtering activity in nearshore waters are without precedent. The dreissenid colonization has implications for the removal and fate of materials filtered from the water by the mussels and for the longer-term development of the nearshore benthic community and lake ecosystem. A conceptual model, the nearshore shunt, seeks to describe a fundamental redirection of nutrient and energy flow consequent to dreissenid establishment. The model explains some emergent problems in the Great Lakes, such as reemergence of Cladophora in some coastal zones while offshore P concentrations remain low, and highlights areas in need of more research. The source of particulate nutrient inputs to dreissenids and the fate of materials exported from the benthic community are critical to understanding the role of dreissenids in the lakes and assessing the applicability of current models for managing nutrients and fisheries. The nearshore shunt would require even more stringent P management for lakes strongly impacted by dreissenids to maintain nearshore water quality.