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An unseen synchrony or recurrent resource pulse opportunity? linking fisheries with aeroecology
Remote Sensing in Ecology and Conservation ( IF 5.5 ) Pub Date : 2020-02-10 , DOI: 10.1002/rse2.147
Henry H. Hansen 1, 2 , Mark Pegg 1 , Matthew Van Den Broeke 3 , Doug Watkinson 4 , Eva C. Enders 4
Affiliation  

Understanding insect and fish interactions from a spatial and temporal perspective can have implications on large‐scale phenology in freshwater systems, yet current information is limited. We employed a novel approach of combining information from acoustic telemetry for six freshwater fish species and weather radar to assess the phenology of mayfly emergence and foraging patterns of freshwater fish. We hypothesized that freshwater fish conduct synchronous movements with annual mayfly hatches as a pulse resource opportunity. Generalized additive models were developed to assess movement distance as a function of species and time; before, during, and after annual mayfly hatch events. A cross‐section abundance index was also employed to quantify dynamics of aerial mayflies. Hatch dynamics revealed nocturnal emergence behaviour with annual variations in intensity, spatial extent, and origin. We found that the hatch was likely a pulse resource feeding opportunity for channel catfish, common carp, freshwater drum, and walleye instead of a synchronized feeding event. Bigmouth buffalo and lake sturgeon utilized riverine habitat away from the hatch and did not likely forage on the emerging mayflies. Remote sensing of fishes and emergent insects using our approach is the first attempt at bridging the capabilities of fisheries ecology and aeroecology to advance movement ecology.

中文翻译:

看不见的同步或周期性资源脉冲机会?将渔业与航空生态联系起来

从时空的角度了解昆虫和鱼类的相互作用可能会对淡水系统的大规模物候产生影响,但是目前的信息是有限的。我们采用了一种新颖的方法,将六种淡水鱼类的声遥测信息与气象雷达相结合,以评估may蝇的物候出现和淡水鱼的觅食模式。我们假设淡水鱼会与一年生的fly蝇孵化进行同步运动,以此作为脉冲资源的机会。开发了通用的加性模型以评估运动距离随物种和时间的变化;每年的may蝇孵化之前,之中和之后。横断面丰度指数也被用来量化空中may的动态。舱口动力学显示夜间出没行为,强度,空间范围和起源每年变化。我们发现,孵化可能是槽channel鱼,鲤鱼,淡水鼓和角膜白斑鱼的脉冲资源喂养机会,而不是同步喂养事件。大嘴水牛和lake鱼利用孵化场以外的河流栖息地,不太可能在新兴的may上觅食。使用我们的方法对鱼类和新兴昆虫进行遥感是首次尝试将渔业生态学和航空生态学的能力联系起来以促进运动生态学。大嘴水牛和lake鱼利用孵化场以外的河流栖息地,不太可能在新兴的may上觅食。使用我们的方法对鱼类和新兴昆虫进行遥感是首次尝试将渔业生态学和航空生态学的能力联系起来以促进运动生态学。大嘴水牛和lake鱼利用孵化场以外的河流栖息地,不太可能在新兴的may上觅食。使用我们的方法对鱼类和新兴昆虫进行遥感是首次尝试将渔业生态学和航空生态学的能力联系起来以促进运动生态学。
更新日期:2020-02-10
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