Temporal changes in the wolf Canis lupus diet in Wigry National Park (northeast Poland)

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-07-05 DOI:10.1080/03949370.2021.1907787

R. Mysłajek, M. Romański, I. Kwiatkowska, K. Stępniak, M. Figura, A. Nowak-Brzezińska, T. A. Diserens, S. Nowak

引用次数: 5

Abstract

Earlier studies have indicated that consumption of beavers Castor ssp. by wolves Canis lupus varies seasonally and is influenced by rainfall affecting water levels. Therefore, to determine whether these carnivores prey more often on beavers in drier seasons and years, we assessed the diet of wolves in Wigry National Park (NE Poland) by analysing 303 scats collected from 2017 to 2019. The most important prey of wolves in this region was the wild boar Sus scrofa (25.2% of consumed biomass), Eurasian beaver Castor fiber (24.4%) and roe deer Capreolus capreolus (24.2%). Predator niche breadth was broader in spring-summer (B = 2.24) than in autumn-winter (B = 1.32), mainly due to higher consumption of beavers (37.3% in spring-summer and 10.7% in autumn-winter). Wolves consumed more beavers (40.9%) and had the broadest niche breadth (B = 1.99) in 2019, when the annual rainfall was lowest. Our study provides further evidence that wolves prey on beavers more often in ice-free seasons and drier years.

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威格里国家公园(波兰东北部)狼犬狼疮饮食的时间变化

较早的研究表明，食用海狸蓖麻有助健康。狼的狼疮随季节变化，受降雨影响，影响水位。因此，为了确定这些食肉动物是否在干旱季节和年份更频繁地捕食海狸，我们通过分析2017年至2019年收集的303份粪便，评估了威格里国家公园(波兰东北部)狼的饮食。该地区狼最主要的猎物是野猪(占总食用量的25.2%)、海狸蓖麻纤维(24.4%)和狍(24.2%)。春夏捕食者生态位宽度(B = 2.24)大于秋冬捕食者生态位宽度(B = 1.32)，主要原因是捕食者对河狸的消耗较高(春夏捕食37.3%，秋冬捕食10.7%)。狼在年降雨量最低的2019年消耗了更多的海狸(40.9%)，生态位宽度最宽(B = 1.99)。我们的研究提供了进一步的证据，证明狼在无冰季节和干旱年份更经常捕食海狸。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.