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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Spatial and temporal diving behavior of non-breeding common murres during two summers of contrasting ocean conditions
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Spatial and temporal diving behavior of non-breeding common murres during two summers of contrasting ocean conditions

机译：在对比海洋状况的两个夏天期间非育种常见杂音的空间和时间潜水行为

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摘要

Successful foraging of marine predators depends on environmental conditions, which also influence prey availability. Neutral or negative El Nino Southern Oscillation and Pacific Decadal Oscillation ocean conditions during the summer of 2013 and strongly positive conditions during the summer of 2015 in the northern California Current System provided a case study to evaluate a marine predator's response to anomalously warm conditions. We used satellite transmitters with saltwater switches to track movements and estimate dive behavior among non-breeding common murres (Uria aalge) off Oregon prior to and during a marine heatwave. We quantified differences in space-use between years, applied linear mixed models to determine environmental influences (e.g. sea surface temperature, surface salinity, chlorophyll a, ocean depth, and calendar date) on dive frequency and dive duration, and contrasted dive activity between time of day, year, and sexes. The majority of birds dispersed away from capture locations, which were situated near the southern range limit of their population. In both years, murres used the Salish Sea and the Columbia River plume; however, murres spent more time foraging in the Columbia River plume and in continental slope habitat during the marine heatwave of 2015. During 2015, dive frequency was reduced, and dive durations were almost twice as long during daytime indicating deeper or more dispersed prey. Increased dive frequency was positively associated with temperature, chlorophyll a, and crepuscular periods. Cluster analysis of dive activity and the top-ranked predictive dive duration model revealed associations between longer-duration dives and decreased dive frequency, marine slope habitat, and cooler ocean temperatures. Murres were relatively inactive throughout the night and we found no sex differences in dive activity. Changes in common murre foraging tactics were associated with ocean warming and revealed selectivity in spatial and temporal use of foraging habitats. Productive marine features including the Columbia River plume provided refuge for murres during apparently poor ocean conditions associated with the marine heatwave. Identifying refuge areas used by highly mobile species experiencing varying ocean conditions is critical for adaptive marine spatial planning that can accommodate a changing ocean climate.
机译：成功的海洋捕食者觅食取决于环境条件，这也影响了猎物的可用性。 2013年夏季，2013年夏季，中性或负埃尔尼诺南部震荡和太平洋横向振荡海洋状况，北加州北部的夏季，北加州现行系统提供了案例研究，以评估海洋捕食者对异常温暖条件的反应。我们使用卫星发射器与盐水开关，在海洋热浪之前和期间在俄勒冈州的非育种常见米尔斯（UriaAalge）中的运动和估计潜水行为。我们在多年之间的空间使用差异，应用线性混合模型，以确定潜水频率和潜水持续时间的环境影响（例如海表面温度，表面盐度，叶绿素A，海洋深度和日历日期），以及时间之间的潜水活动对比一天，年和性别。大多数鸟类远离捕获地点，位于南方范围限制的人口附近。在这两年中，穆雷雷斯使用了盐水和哥伦比亚河羽流;然而，Murres在哥伦比亚河羽流和陆地坡栖息地在2015年的海洋热风期间花费了更多的时间。在2015年期间，潜水频率降低，潜水持续时间几乎是白天的两倍，表明更深或更深的分散猎物。增加的潜水频率与温度，叶绿素A和蠕虫期呈正相关。潜水活动的集群分析和排名最高的预测性潜水持续时间模型揭示了较长持续时间潜水和潜水频率下降之间的关联，海坡栖息地和较冷的海洋温度。村庄全夜相对不活跃，我们发现潜水活动没有性别差异。常见的Murre觅食策略的变化与海洋变暖有关，并在觅食栖息地的空间和时间使用中揭示了选择性。富有成效的海洋特征，包括哥伦比亚河羽流在与海洋热浪相关的显然贫困的海洋状况下，村庄庇护。识别经历各种海洋状况的高度移动物种使用的避难区对于适应性的海洋空间规划至关重要，这可以适应不断变化的海洋气候。

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    Loredo Stephanie A.; Orben Rachael A.; Suryan Robert M.; Lyons Donald E.; Adams Josh; Stephensen Shawn W.;

  • 作者单位

    Oregon State Univ Hatfield Marine Sci Ctr Dept Fisheries & Wildlife 2030 SE Marine Sci Dr Newport OR 97365 USA;

    Oregon State Univ Hatfield Marine Sci Ctr Dept Fisheries & Wildlife 2030 SE Marine Sci Dr Newport OR 97365 USA;

    Oregon State Univ Hatfield Marine Sci Ctr Dept Fisheries & Wildlife 2030 SE Marine Sci Dr Newport OR 97365 USA|NOAA Fisheries Auke Bay Labs Alaska Fisheries Sci Ctr 17109 Pt Lena Loop Rd Juneau AK 99801 USA;

    Oregon State Univ Hatfield Marine Sci Ctr Dept Fisheries & Wildlife 2030 SE Marine Sci Dr Newport OR 97365 USA|Natl Audubon Soc Seabird Restorat Program 104 Nash Hall Corvallis OR 97331 USA;

    US Geol Survey Western Ecol Res Ctr Santa Cruz Field Stn 2885 Mission St Santa Cruz CA 95060 USA;

    US Fish & Wildlife Serv Oregon Coast Natl Wildlife Refuge Complex 2127 SE Marine Sci Dr Newport OR 97365 USA;

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  • 正文语种 eng
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  • 关键词

    Seabirds; Tracking; Marine heatwave; Diving behavior; Uria aalge; Diel activity;

    机译：Seabirds;跟踪;海洋热浪;潜水行为;uriaAalge;Diel活动;

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