浅纹田鼠胃内容物中氮和碳的浓度。食物质量决定丰盛吗

Q2 Environmental Science

Open Ecology Journal Pub Date : 2009-10-21 DOI:10.2174/1874213000902010086

R. Thomas Palo, Gert E. Olsson

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引用次数: 7

摘要

我们发现在不同的森林地点，田鼠胃中的氮(N)浓度是不同的。胃内容物中氮的浓度和氮碳比(C)在性别和季节之间没有差异。体质量在不同地点和季节之间存在差异，但与N浓度无关，尽管春季田鼠的体质量比秋季平均重4.8 g。胃内容物中的N和C浓度呈正相关，表明饮食质量可能与此比值有关。田鼠单位体重胃氮浓度与单位努力捕获量呈显著正相关。我们认为胃内容物中氮含量高和nc比值高的地方意味着更好的栖息地，支持更高的种群密度。

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Nitrogen and Carbon Concentrations in the Stomach Content of Bank Voles (Myodes glareolus). Does Food Quality Determine Abundance

We found that concentrations of nitrogen (N) in the stomach of voles varied between forest sites. Concentrations of nitrogen as well as the ratio of nitrogen to carbon (C) in stomach content were not different between the sexes or with season. Body mass varied between sites and between seasons but were unrelated to N concentration in spite that the body mass of voles in the spring season were on average 4.8 g heavier than in the autumn A positive relationship was found between N and C concentrations in the stomach content implying the diet quality could be related to this ratio. N concentrations in the stomach per unit body mass were positively and significantly related to catch per unit effort of voles. We suggest that sites with high N concentrations in stomach content and with higher NC-ratio imply better habitats that support higher population densities of voles.

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来源期刊

Open Ecology Journal Environmental Science-Environmental Science (all)

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期刊介绍： The Open Ecology Journal is an open access online journal which embraces the trans-disciplinary nature of ecology, seeking to publish original research articles, reviews, letters and guest edited single topic issues representing important scientific progress from all areas of ecology and its linkages to other fields. The journal also focuses on the basic principles of the natural environment and its conservation. Contributions may be based on any taxa, natural or artificial environments, biodiversity, spatial scales, temporal scales, and methods that advance this multi-faceted and dynamic science. The Open Ecology Journal also considers empirical and theoretical studies that promote the construction of a broadly applicable conceptual framework or that present rigorous tests or novel applications of ecological theory.