Trends and status of harbor seals in Washington State, USA (1977–2023)

IF 2 3区生物学 Q2 MARINE & FRESHWATER BIOLOGY

Marine Mammal Science Pub Date : 2024-08-01 DOI:10.1111/mms.13161

Scott F. Pearson, Staci M. Amburgey, Casey T. Clark, Sarah A. Tanedo, Josh M. London, Harriet R. Huber, Steven J. Jeffries

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引用次数: 0

Abstract

Harbor seal (Phoca vitulina) numbers in the United States rebounded after the implementation of conservation measures associated with the Marine Mammal Protection Act of 1972 (MMPA). Stock estimates are a critical tool for assessing species status and management options under the MMPA and for modeling efforts designed to evaluate the role of pinnipeds in marine ecosystems. We conducted aerial surveys of harbor seal haul‐out sites between 1977 and 2023 to estimate population size and trends in four Washington State, USA, stocks: (1) Hood Canal, (2) Southern Puget Sound, (3) Washington Northern Inland Waters, and (4) the Washington portion of the Oregon‐Washington Coastal Stock. We fit a Bayesian state‐space model to estimate population trends for all stocks, as well as the Washington Coast region, and present carrying capacities and maximum net productivity levels for all stocks. The most recent population estimates for the three inland water stocks are within their optimal sustainable population range, with some evidence that the Southern Puget Sound Stock is continuing to grow.

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美国华盛顿州港湾海豹的趋势和现状（1977-2023 年）

1972 年《海洋哺乳动物保护法》（MMPA）相关保护措施实施后，美国的港海豹（Phoca vitulina）数量有所回升。种群估计是评估物种状况和《海洋哺乳动物保护法》管理方案的重要工具，也是旨在评估针足类动物在海洋生态系统中作用的建模工作的重要工具。我们在 1977 年至 2023 年期间对港海豹出没地点进行了航测，以估计美国华盛顿州以下四个种群的数量和趋势：(1) 胡德运河；(2) 南普吉特海湾；(3) 华盛顿州北部内陆水域；(4) 俄勒冈-华盛顿州沿海种群的华盛顿州部分。我们采用贝叶斯状态空间模型来估计所有种群以及华盛顿沿岸地区的种群趋势，并提出所有种群的承载能力和最大净生产力水平。三个内陆水域种群的最新种群数量估计值均在其最佳可持续种群数量范围内，有证据表明南普吉特海湾种群仍在继续增长。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Marine Mammal Science 生物-动物学

CiteScore

4.80

自引率

8.70%

发文量

审稿时长

6-12 weeks

期刊介绍： Published for the Society for Marine Mammalogy, Marine Mammal Science is a source of significant new findings on marine mammals resulting from original research on their form and function, evolution, systematics, physiology, biochemistry, behavior, population biology, life history, genetics, ecology and conservation. The journal features both original and review articles, notes, opinions and letters. It serves as a vital resource for anyone studying marine mammals.