苏旺尼河苏旺尼鳄鳄龟相对丰度、种群结构和体型的变化

IF 0.6 4区环境科学与生态学 Q4 BIODIVERSITY CONSERVATION

Southeastern Naturalist Pub Date : 2023-06-14 DOI:10.1656/058.022.0sp1216

Travis M. Thomas, Kevin M. Enge, E. Suarez, S. Barry, Steve A. Johnson

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引用次数: 3

摘要

地质过程影响着佛罗里达州苏万尼河(Suwannee River)沿岸的水化学和生物生产力，并将河流主河道划分为6个不同的生态河段(ERs)。由于这些差异，我们假设Suwannee鳄鳄龟(Macrochelys suwanniensis)种群在不同的er中存在差异。2011-2013年，我们在每个生态区选取了2个5 km的样点，研究了苏皖石竹的相对丰度、性别比、体型分布和体型的空间变化。中游er的捕获率和雄性体型大于上游和下游er。性别比例仅在中期急诊室出现男性倾斜。需要进一步的研究来了解该河流中苏万尼沼虾种群动态的生态驱动因素。

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Variation in Relative Abundance, Population Structure, and Body Size of the Suwannee Alligator Snapping Turtle (Macrochelys suwanniensis) in the Suwannee River

Abstract - Geological processes influence water chemistry and biological productivity along the Suwannee River and divide the mainstem of the river into 6 distinct ecological reaches (ERs) in Florida. Because of these distinctions, we hypothesized that the Macrochelys suwanniensis (Suwannee Alligator Snapping Turtle) population varies among ERs. During 2011–2013, we sampled two 5-km sites in each ER to investigate spatial variation in relative abundance, sex ratio, size-class distribution, and body size of M. suwanniensis. Capture rates and male body sizes were greater in the middle ERs than in the upstream and downstream ERs. Sex ratios were male-skewed only in the middle ERs. Additional research is needed to understand the ecological drivers of M. suwanniensis population dynamics in this river.

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来源期刊

Southeastern Naturalist 环境科学-生态学

CiteScore

1.20

自引率

16.70%

发文量

审稿时长

18-36 weeks

期刊介绍： The Southeastern Naturalist covers all aspects of the natural history sciences of terrestrial, freshwater, and marine organisms and the environments of the southeastern portion of North America, roughly bounded from North Carolina south to Florida, west to Texas, north to Oklahoma, and east back to North Carolina. Manuscripts based on field studies outside of this region that provide information on species within this region may be considered at the Editor’s discretion.