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首页> 外文期刊>Marine ecology progress series >Validation and improvement of species distribution models for structure-forming invertebrates in the eastern Bering Sea with an independent survey
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Validation and improvement of species distribution models for structure-forming invertebrates in the eastern Bering Sea with an independent survey

机译：通过独立调查验证和改善白令海东部无结构脊椎动物的物种分布模型

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摘要

Species distribution modeling is a useful tool for informing ecosystems management. However, validation of model predictions through independent surveys is rarely attempted in marine environments, which are challenging to study and often contain sensitive habitats. We conducted an underwater camera survey of the eastern Bering Sea slope and outer shelf as an independent test of species distribution modeling of deep-sea corals, sponges and sea whips based on bottom trawl survey data. We also refined model predictions by combining species distribution models based on both bottom trawl and underwater camera survey data. The camera survey also was conducted to determine density and size of the taxa. The trawl model predictions generally were confirmed by the camera observations (area under the receiver-operator curve [AUC] values of 0.63 to 0.73). Combining bottom trawl and camera survey model predictions improved predictive ability (AUC values of 0.74 to 0.90 for camera observations). Corals were distributed in Pribilof Canyon and the slope area to the northwest of the canyon, and colony densities averaged 0.005 ind. m(-2) and ranged from 0 to 0.28 ind. m(-2). The low densities were consistent with the absence of hard substrates for coral attachment in most areas of the eastern Bering Sea. Sponge and sea whip density averaged 0.11 ind. m(-2), with sponge density ranging from 0 to 13.1 and sea whip density ranging from 0 to 8.4 ind. m(-2). Invertebrate heights were generally small, with most taxonomic groups < 20 cm in average height. This type of study is vital to providing the best scientific advice for spatial management of structure-forming invertebrates, so that decisions concerning the protection of these vulnerable communities can be implemented with a clear basis for priorities.
机译：物种分布建模是通知生态系统管理的有用工具。但是，很少在海洋环境中尝试通过独立调查验证模型预测，因为海洋环境难以研究并且通常包含敏感的栖息地。我们根据白底拖网调查数据，对白令海东部斜坡和外陆架进行了水下相机调查，作为对深海珊瑚，海绵和海鞭的物种分布建模的独立测试。我们还通过结合基于底拖网和水下相机调查数据的物种分布模型来完善模型预测。还进行了相机调查，以确定分类群的密度和大小。拖网模型的预测通常由摄像机的观察结果证实（接收器-操作员曲线[AUC]值在0.63至0.73之间的区域）。结合底部拖网和摄像机调查模型的预测可以提高预测能力（摄像机观测的AUC值为0.74至0.90）。珊瑚分布在普里比洛夫峡谷（Pribilof Canyon）和峡谷西北部的斜坡地区，平均殖民地密度为0.005 ind。 m（-2），范围从0到0.28 ind。 m（-2）。低密度与白令海东部大多数地区没有坚硬的珊瑚附着基质相吻合。海绵和海鞭密度平均为0.11 ind。 m（-2），海绵密度为0到13.1，海鞭密度为0到8.4 ind。 m（-2）。无脊椎动物的身高通常很小，大多数生物分类群的平均身高小于20厘米。这种类型的研究对于为结构无脊椎动物的空间管理提供最佳的科学建议至关重要，因此有关保护这些脆弱社区的决定可以在明确优先事项的基础上实施。

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