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首页> 外文期刊>Marine biology >Seals At Sea: Modelling Seal Distribution In The German Bight Based On Aerial Survey Data
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Seals At Sea: Modelling Seal Distribution In The German Bight Based On Aerial Survey Data

机译：海上海豹：基于航测数据的德国海豹海豹分布建模

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The Wadden Sea is an important habitat for harbour seals and grey seals. They regularly haul-out on sandbanks and islands along the coast. Comparably little is known about the time seals spend at sea and how they use the remainder of the North Sea. Yet, human activity in offshore waters is increasing and information on seal distribution in the North Sea is crucial for conservation and management. Aerial line transect surveys were conducted in the German bight from 2002 to 2007 to investigate the distribution and abundance of marine mammals. Distance sampling methodology was combined with density surface modelling for a spatially explicit analysis of seal distribution in the German North Sea. Depth and distance to coast were found to be relevant predictor variables for seal density. Density surface modelling allowed for a depiction of seal distribution in the study area as well as an abundance estimate. This is the first study to use aerial survey data to develop a density surface model (DSM) for a spatially explicit distribution estimate of seals at sea.
机译：瓦登海是海豹和灰海豹的重要栖息地。他们定期在沿海的沙洲和岛屿上进行拖运。相比之下，关于海豹在海上度过的时间以及它们如何利用北海其余地区的信息知之甚少。然而，近海人类活动正在增加，有关北海海豹分布的信息对于保护和管理至关重要。从2002年至2007年，在德国湾进行了空中横断面调查，以调查海洋哺乳动物的分布和数量。距离采样方法与密度表面建模相结合，可对德国北海的海豹分布进行空间显式分析。发现深度和到海岸的距离是海豹密度的相关预测变量。密度表面建模可以描述研究区域中的海豹分布以及丰富的估计。这是第一项使用航空勘测数据来开发密度表面模型（DSM）的研究，该模型用于对海豹进行空间显式的分布估计。

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