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首页> 外文期刊>Chelonian conservation and biology >Did Declining Carrying Capacity for the Kemp's Ridley Sea Turtle Population Within the Gulf of Mexico Contribute to the Nesting Setback in 2010-2017?
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Did Declining Carrying Capacity for the Kemp's Ridley Sea Turtle Population Within the Gulf of Mexico Contribute to the Nesting Setback in 2010-2017?

机译：墨西哥湾内肯普（Kemp）的里德利（Ridley）海龟种群的承载能力下降是否对2010-2017年的筑巢受灾有贡献？

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摘要

The Kemp's ridley (Lepidochelys kempii) is the most endangered sea turtle species. During 1966-2017, an annual count of nests (i.e., clutches of eggs laid) has served as an annual index of Kemp's ridley nesting female abundance on the Gulf of Mexico (GoM) index beach in Tamaulipas, Mexico. This index was increasing exponentially at 19% per year in 2009, but it dropped unexpectedly by more than a third in 2010 and through 2017 remained well below levels predicted. We hypothesize that pre-2010 declining carrying capacity for the Kemp's ridley population within the GoM contributed to this nesting setback. We discuss pre-2010 factors that may have caused carrying capacity to decline, including degradation of the GoM ecosystem, the exponentially increasing Kemp's ridley population, and declining per capita availability of neritic (i.e., postpelagic) Kemp's ridley food, including natural prey and scavenged discarded bycatch from shrimp trawling. We encourage evaluations (especially those within a robust modeling framework) of this hypothesis and others put forth to explain the nesting setback to provide information needed to guide restoration of the population's progress toward recovery.
机译：肯普的里德利（Lepidochelys kempii）是最濒危的海龟物种。在1966年至2017年期间，巢穴（即产下的卵）的年度计数已成为肯普（Kemp）在墨西哥塔毛利帕斯州墨西哥湾（GoM）指数海滩上筑巢的里德利筑巢雌鱼数量的年度指数。该指数在2009年以每年19％的速度指数增长，但在2010年却意外下降了三分之一以上，到2017年仍远低于预期水平。我们假设2010年前GoM中肯普（Kemp）的ridley人口的承载能力下降，导致了这一筑巢挫折。我们讨论了可能导致承载能力下降的2010年前的因素，包括GoM生态系统的退化，肯普（Kemp）的ridley人口呈指数级增长，以及肯普（Kemp）的肯德（ridpley）食物的人均可用量下降，包括天然猎物和清除的虾拖网丢弃的兼捕物。我们鼓励对此假设进行评估（尤其是在可靠的建模框架内进行评估），并提出其他一些解释来解释嵌套挫折，以提供必要的信息来指导恢复人口向恢复的进展。

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