美国宾夕法尼亚州Powdermill自然保护区的季节性两栖动物物种丰富和种群波动。

IF 0.6 4区 环境科学与生态学 Q4 Agricultural and Biological Sciences
Amanda K. Martin, J. Sheridan
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引用次数: 0

摘要

摘要两栖动物是一个非常脆弱的分类群体,在世界范围内数量减少。由于两栖动物在营养水平之间起着关键作用,有助于营养循环,因此了解它们的物种丰富度、丰度和酚学如何随着时间的推移而变化至关重要。由于两栖动物的数量自然波动,短期监测可以深入了解两栖动物群落如何应对天气条件的近期变化,这有助于预测对气候变化的长期反应。我们使用陷阱来研究宾夕法尼亚州Powdermill自然保护区(PNR)2020年至2021年两栖动物群落的年际变化,为未来的长期监测提供关键细节。各年的月平均温度和降水量变化不大,但从2020年到2021年,每次采样的月捕获量下降,每次采样每月生物量增加。尽管两栖动物的总捕获量与温度和降水量之间缺乏显著关系,但峰值丰度转移得更早,2021年的个体数量比2020年更大。有趣的是,通过温度和降水之间的相互作用预测了单个物种的生物量,这表明单个物种对气候变化的脆弱性各不相同,但PNR的两栖动物群落作为一个整体对温度和降水的微小波动具有弹性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Seasonal Amphibian Species Richness and Population Fluctuations at Powdermill Nature Reserve, Pennsylvania, U.S.A.
Abstract. Amphibians are a highly vulnerable taxonomic group that have suffered population declines worldwide. As amphibians serve critical links between trophic levels and facilitate nutrient recycling, it is critical to understand how their species richness, abundance, and phenology shift over time. Because amphibian populations naturally fluctuate, short-term monitoring can provide insight into how amphibian communities respond to proximate changes in weather conditions, which is helpful for predicting long-term responses to climate change. We used pitfall traps to examine interannual variation of the amphibian community at Powdermill Nature Reserve (PNR) in Pennsylvania during 2020–2021 to provide critical details for future long-term monitoring. Mean monthly temperature and precipitation did not vary significantly between years, but monthly captures per sampling effort declined and monthly biomass per sampling effort increased from 2020 to 2021. Despite a lack of significant relationships between total amphibian captures and temperature and precipitation, peak abundance shifted earlier, and individuals were larger in 2021 compared to 2020. Interestingly, individual species biomass was predicted by an interaction between temperature and precipitation, suggesting individual species will vary in vulnerability to climate change, but the amphibian community as a whole at PNR is resilient to minor fluctuations in temperature and precipitation.
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来源期刊
American Midland Naturalist
American Midland Naturalist 环境科学-生态学
CiteScore
1.20
自引率
0.00%
发文量
38
审稿时长
18-36 weeks
期刊介绍: The American Midland Naturalist has been published for 90 years by the University of Notre Dame. The connotations of Midland and Naturalist have broadened and its geographic coverage now includes North America with occasional articles from other continents. The old image of naturalist has changed and the journal publishes what Charles Elton aptly termed "scientific natural history" including field and experimental biology. Its significance and breadth of coverage are evident in that the American Midland Naturalist is among the most frequently cited journals in publications on ecology, mammalogy, herpetology, ornithology, ichthyology, parasitology, aquatic and invertebrate biology and other biological disciplines.
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