Modelling basin-scale distribution of fish occurrence probability for assessment of flow and habitat conditions in rivers
Modelling basin-scale distribution of fish occurrence probability for assessment of flow and habitat conditions in rivers
复制标题
对鱼类出现概率的流域尺度分布进行建模，以评估河流的流量和栖息地条件
DOI：
10.1080/02626667.2013.827791
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发表时间：
2014
影响因子：
3.5
通讯作者：
C. Yoshimura
中科院分区：
文献类型：
--
作者：
Pengzhe Sui;Akito Iwasaki;Oliver C. Saavedra V.;C. Yoshimura
摘要水流流态在维持河流生态系统生物多样性中起着重要作用。然而，流动制度对河流鱼类的影响还没有得到明确的描述。因此，我们提出了一种新的方法来定量地联系栖息地条件（如流量指数和物理栖息地条件）的鱼类物种的发生概率（OP）。我们开发了一个流域规模的鱼类分布模型，通过集成的概念，栖息地适宜性评估与分布式水文模型，以估计OP的鱼类，特别注意流态。应用广义线性模型对鱼类发生概率与主要环境因子的关系进行了分析。采用基于地貌的水文模型模拟河流流量，计算了10个流量指标。模拟了日本相模川中50种鱼类的出现概率。对于预测精度，需要包括每个物种的存在和不存在的至少五次观测的实地调查结果，以获得相对可靠的预测（精度> 60%）。使用开发的模型，每个物种的重要栖息地条件进行了鉴定，这表明低流量事件的重要性，超过10个物种，包括Hypomesus nipponensis和Rhinogobius fluviatilis。该模型还证实了自然流动的积极影响和跨河建筑物，如水坝和堰，对大多数物种的OP的负面影响。建议的方法使我们能够评估和项目的水资源管理政策的生态后果。结果表明，鱼类分布模型的适用性，以提供定量信息的流量需要维持鱼类群落。编辑Z.W.作者声明：John M. Acreman Citation Sui，P.，岩崎，A.，Saavedra，V.O.C.，和Yoshimura，C.，2013.模拟流域尺度鱼类出现概率分布以评估河流水流和栖息地条件。Hydrological Sciences Journal，59（3-4），618-628.
Abstract Flow regimes play an important role in sustaining biodiversity in river ecosystems. However, the effects of flow regimes on riverine fish have not been clearly described. Therefore, we propose a new methodology to quantitatively link habitat conditions (such as flow indices and physical habitat conditions) to the occurrence probability (OP) of fish species. We developed a basin-scale fish distribution model by integrating the concept of habitat suitability assessment with a distributed hydrological model in order to estimate the OP of fish, with particular attention to flow regime. A generalized linear model was used to evaluate the relationship between the probabilities of fish occurrence and major environmental factors in river sections. A geomorphology-based hydrological model was adopted to simulate river discharge, which was used to calculate 10 flow indices. The occurrence probabilities of 50 fish species in the Sagami River in Japan were modelled. For the prediction accuracy, field survey results that included at least five observations of both the presence and the absence of each species were required to obtain relatively reliable prediction (accuracy > 60%). Using the developed model, important habitat conditions for each species were identified, which showed the importance of low-flow events for more than 10 species, including Hypomesus nipponensis and Rhinogobius fluviatilis. The model also confirmed the positive effects of natural flow and the negative effect of river-crossing structures, such as dams and weirs, on the OP of most species. The suggested approach enables us to evaluate and project the ecological consequences of water resource management policy. The results demonstrate the applicability of the fish distribution model to provide quantitative information on the flow required to maintain fish communities. Editor Z.W. Kundzewicz; Guest editor M. Acreman Citation Sui, P., Iwasaki, A., Saavedra, V.O.C., and Yoshimura, C., 2013. Modelling basin-scale distribution of fish occurrence probability for assessment of flow and habitat conditions in rivers. Hydrological Sciences Journal, 59 (3–4), 618–628.