Multi-scale habitat association of the ortolan bunting "Emberiza hortulana" in a sub-mediterranean area in Slovenia-猫眼课题宝

斯洛文尼亚亚地中海地区斑鹀“Emberiza hortulana”的多尺度栖息地协会

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2010

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M. Groot;P. Kmecl;Andrej Figelj;Jernej Figelj;Tomaž Mihelič;Borut Rubinić

在多个实验中，研究了黑颈长尾雉Emberiza hortulana的栖息地选择空间尺度在25 m的野外测量了领土和随机点的生境变量半径和GIS图层的比例尺为25 m、100 m、500 m和1，000 m。生境变量为用广义线性模型分析。该ortolan彩旗被发现在25米半径的地区，几棵黑松，在草本层里有低矮的草和开阔的斑块。在100米半径范围内，发生的可能性最高的地区，草地与大树，永久性和部分杂草丛生的草地和小面积的森林在500米半径范围内，城市地区及其基础设施和森林对彩旗产生了负面影响，有或没有大树的部分过度生长的草甸和永久草甸。在1,000米半径范围内，有或没有大树的永久性草地，以及缺乏大型城市地区和基础设施积极地影响了波多兰彩旗的出现。总之，影响栖息地选择的因素根据空间尺度的不同而不同。在领土一级，它的存在只是受开放和部分杂草丛生的草甸和森林覆盖的影响，而在更大的尺度上，也受到城市地区覆盖的影响。不同生境下，影响生境选择的因素不同森林在小尺度上对领土的概率有积极的影响，而在小尺度上对领土的概率有消极的影响。更大的规模。在更大范围内对栖息地选择产生积极影响的因素越来越少在Kras，普通的，因此较少的合适地点可用于ortolan bunting

The habitat selection of the ortolan bunting Emberiza hortulana has been examined on multiple spatial scales. Habitat variables of territories and random points were measured in the field on a 25 m radius and from GIS layers on scales of 25 m, 100 m, 500 m and 1,000 m radius. Habitat variables were analysed by a generalized linear model. The ortolan bunting was found on a 25 m radius in areas with a few black pines, with low grass and open patches within the herbaceous layer. On a 100 m radius scale, the probability of occurrence was highest in areas with meadows with large trees, permanent and partly overgrown meadows, and small areas of forests. On a 500 m radius scale, the occurrence of the ortolan bunting was negatively affected by urban areas and their infrastructure and by forests, and positively by partly overgrown meadows and permanent meadows with or without large trees. On a 1,000 m radius, permanent meadows with or without large trees, and the absence of large urban areas and infrastructure positively affected the presence of the ortolan bunting. In conclusion, factors influencing habitat selection by the ortolan bunting differ according to spatial scale. On the territorial level, its presence was only influenced by cover of open and partly overgrown meadows and by forest, while on larger scales it was also affected by the cover of urban areas. Factors influence habitat selection differently on different scales; a forest influences the probability of a territory positively on a small scale while negatively on larger scales. Factors influencing the habitat selection positively on a larger scale are becoming less common and therefore fewer suitable sites are available for the ortolan bunting in Kras

Multi-scale habitat association of the ortolan bunting "Emberiza hortulana" in a sub-mediterranean area in Slovenia

斯洛文尼亚亚地中海地区斑鹀“Emberiza hortulana”的多尺度栖息地协会

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