We demonstrate a novel, spatially explicit assessment of the current condition of aquatic ecosystem services, with limited sensitivity analysis for the atmospheric contaminant mercury. The Integrated Ecological Modeling System (IEMS) forecasts water quality and quantity, habitat suitability for aquatic biota, fish biomasses, population densities, productivities, and contamination by methylmercury across headwater watersheds. We applied this IEMS to the Coal River Basin (CRB), West Virginia (USA), an 8-digit hydrologic unit watershed, by simulating a network of 97 stream segments using the SWAT watershed model, a watershed mercury loading model, the WASP water quality model, the PiSCES fish community estimation model, a fish habitat suitability model, the BASS fish community and bioaccumulation model, and an ecoservices post-processer. Model application was facilitated by automated data retrieval and model setup and updated model wrappers and interfaces for data transfers between these models from a prior study. This companion study evaluates baseline predictions of ecoservices provided for 1990 - 2010 for the population of streams in the CRB and serves as a foundation for future model development.

中文翻译：

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用于评估多种压力因素对流域内溪流和河流生态系统服务影响的综合生态建模系统

我们展示了一种对水生生态系统服务现状的新颖的、空间明确的评估，并对大气污染物汞进行了有限的敏感性分析。综合生态模型系统 (IEMS) 可预测源头流域的水质和水量、水生生物群的栖息地适宜性、鱼类生物量、人口密度、生产力和甲基汞污染。我们将此 IEMS 应用于西弗吉尼亚州（美国）煤河流域 (CRB)，这是一个 8 位数水文单位流域，通过使用 SWAT 流域模型、流域汞负荷模型、WASP 水模拟 97 个河流段的网络质量模型、PiSCES 鱼类群落估计模型、鱼类栖息地适宜性模型、BASS 鱼类群落和生物累积模型以及生态服务后处理程序。通过自动数据检索和模型设置以及更新的模型包装器和先前研究中这些模型之间的数据传输接口，促进了模型应用。这项配套研究评估了 1990 年至 2010 年为 CRB 溪流人口提供的生态服务的基线预测，并作为未来模型开发的基础。