An Interferometric Synthetic Aperture Radar (InSAR) Habitat Suitability Model to Identify Overwinter Conditions for Coregonine Whitefishes in Arctic Lagoons.
An Interferometric Synthetic Aperture Radar (InSAR) Habitat Suitability Model to Identify Overwinter Conditions for Coregonine Whitefishes in Arctic Lagoons.
复制标题
干涉合成孔径雷达 (InSAR) 栖息地适宜性模型，用于识别北极泻湖 Coregonine 白鲑的越冬条件。
DOI：
10.1002/tafs.10111
复制
发表时间：
2018
影响因子：
1.4
通讯作者：
Seitz,AndrewC
中科院分区：
文献类型：
--
作者：
Tibbles,Marguerite;Falke,JeffreyA;Mahoney,AndrewR;Robards,MartinD;Seitz,AndrewC
泻湖为许多鱼类提供了重要的栖息地，包括白鲑，白鲑是阿拉斯加北极农村社区许多自给性渔业的支柱。尽管它们的重要性，鲜为人知的是，在北极阿拉斯加白鲑的越冬习性，由于在冬季采样相关的挑战。我们开发了一个栖息地适宜性（HS）模型，以了解潜在的物理条件，白鲑在北极冬季的经验，使用三个指示泻湖，代表了一系列的环境特征。HS模型采用三步法构建。第一，使用干涉合成孔径雷达（干涉合成孔径雷达）的遥感确定了漂浮冰和底部坚冰的区域。其次，通过实地实地考察，我们确认了冰盖下液态水的存在和质量（水深、温度和溶解氧）。第三，我们评估了适合的液态水作为白鲑栖息地的基础上发表的文献和专家解释的水质参数。干涉合成孔径雷达确定，0，65.4，和88.2%的三个泻湖组成的浮冰对应的液态水的冰层下的区域。HS模型表明，所有三个泻湖的白鲑栖息地在冬季比在夏季由于栖息地的损失，因为存在的bottomfast冰和减少的液态水的质量，由于低温，高盐度，低溶解氧水平的适合性降低。然而，只有最浅的泻湖有致命的条件和零适合白鱼栖息地。这里概述的方法提供了一种简单，具有成本效益的方法来确定栖息地，始终提供关键的冬季栖息地和集成遥感HS模型框架。
Lagoons provide critical habitats for many fishes, including coregonine whitefishes, which are a mainstay in many subsistence fisheries of rural communities in Arctic Alaska. Despite their importance, little is known about the overwintering habits of whitefishes in Arctic Alaska due to the challenges associated with sampling during winter. We developed a habitat suitability (HS) model to understand the potential range of physical conditions that whitefishes experience during the Arctic winter, using three indicator lagoons that represent a range of environmental characteristics. The HS model was built using a three‐step approach. First, remote sensing that uses interferometric synthetic aperture radar (InSAR) identified areas of floating and bottomfast ice. Second, through in‐field ground‐truthing, we confirmed the presence and quality of liquid water (water depth, temperature, and dissolved oxygen) beneath the ice cover. Third, we assessed the suitability of that liquid water as habitat for whitefishes based on published literature and expert interpretation of water quality parameters. InSAR determined that 0, 65.4, and 88.2% of the three lagoons were composed of floating ice corresponding with areas of liquid water beneath a layer of ice. The HS model indicated that all three lagoons had reduced suitability as whitefish habitat in winter than in summer due to the loss of habitat because of the presence of bottomfast ice and a reduction in the quality of liquid water due to cold temperatures, high salinities, and low dissolved oxygen levels. However, only the shallowest lagoon had lethal conditions and zero suitability as whitefish habitat. The methods outlined here provide a simple, cost‐effective method to identify habitats that consistently provide critical winter habitat and integrate remote sensing in a HS model framework.