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Predicting bycatch hotspots based on suitable habitat derived from fishery-independent data

机译：基于渔业无关数据的合适栖息地预测兼捕热点

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摘要

Bycatch remains a global problem in managing sustainable fisheries. A critical aspect of management is understanding the timing and spatial extent of bycatch. Fisheries management often relies on observed bycatch data, which are not always available due to a lack of reporting or observer coverage. Alternatively, analyzing the overlap in suitable habitat for the target and non-target species can provide a spatial management tool to understand where bycatch interactions are likely to occur. Potential bycatch hotspots based on suitable habitat were predicted for cusk Brosme brosme incidentally caught in the Gulf of Maine American lobster Homarus americanus fishery. Data from multiple fisheries-independent surveys were combined in a delta-generalized linear mixed model to generate spatially explicit density estimates for use in an independent habitat suitability index. The habitat suitability indices for American lobster and cusk were then compared to predict potential bycatch hotspot locations. Suitable habitat for American lobster has increased between 1980 and 2013 while suitable habitat for cusk decreased throughout most of the Guff of Maine, except for Georges Basin and the Great South Channel. The proportion of overlap in suitable habitat varied interannually but decreased slightly in the spring and remained relatively stable in the fall over the time series. As Gulf of Maine temperatures continue to increase, the interactions between American lobster and cusk are predicted to decline as cusk habitat continues to constrict. This framework can contribute to fisheries managers' understanding of changes in habitat overlap as climate conditions continue to change and alter where bycatch interactions could occur.
机译：兼捕仍然是管理可持续渔业的全球问题。管理的一个关键方面是了解兼捕的时序和空间程度。渔业管理通常依赖于观察到的兼捕数据，这是由于缺乏报告或观察者覆盖而不是总是可用的。或者，分析目标和非目标物种的合适栖息地的重叠可以提供空间管理工具，以了解可能发生兼捕交互的位置。预计基于合适的栖息地的潜在兼捕热点偶然被捕获在缅因州龙虾冠状法利亚渔业湾的海湾。从多个渔业的调查中的数据组合在三角形的线性混合模型中，以产生用于独立栖息地适用率指数的空间显式密度估计。然后比较美国龙虾和心斯克的栖息地适合性指数，以预测潜在的兼捕热点位置。适用于美国龙虾的栖息地在1980年至2013年间增加，而在大多数缅因缅因州的缅因州河谷的合适栖息地下降，除了Georges盆地和大南际。合适的栖息地的重叠比例续地依然变化，但在弹簧中略微下降，在时间序列中倒塌仍然相对稳定。随着缅因州温度的湾继续增加，随着Cusk栖息地继续限制，预计美国龙虾和尖峰之间的相互作用预计将下降。此框架可以为渔业管理人员对栖息地重叠的变化的理解有助于随着气候条件的不断变化和改变可能发生兼捕交互的影响。

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  • 来源
    《Marine ecology progress series》 |2020年第may7期|159-175|共17页
  • 作者

    Runnebaum Jocelyn; Tanaka Kisei R.; Guan Lisha; Cao Jie; OBrien Loretta; Chen Yong;

  • 作者单位

    Univ Maine Sch Marine Sci 5741 Libby Hall Orono ME 04469 USA|Nat Conservancy Maine Brunswick ME 04011 USA;

    Univ Maine Sch Marine Sci 5741 Libby Hall Orono ME 04469 USA|Monterey Bay Aquarium 886 Cannery Row Monterey CA 93940 USA;

    Univ Maine Sch Marine Sci 5741 Libby Hall Orono ME 04469 USA|Chinese Acad Fishery Sci Yellow Sea Fisheries Res Inst Key Lab Sustainable Utilizat Marine Fisheries Minist Agr Qingdao 266071 Peoples R China;

    Univ Maine Sch Marine Sci 5741 Libby Hall Orono ME 04469 USA|North Carolina State Univ Dept Appl Ecol Morehead City NC 28557 USA;

    462 Blacksmith Shop Rd East Falmouth MA 02536 USA;

    Univ Maine Sch Marine Sci 5741 Libby Hall Orono ME 04469 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Habitat modeling; Data limited management; Bycatch hotspots;

    机译：栖息地建模;数据有限管理;兼捕热点;

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