Vineyards, but not cities, are associated with lower presence of a generalist bird, the Common Black

来源 :鸟类学研究(英文版) | 被引量 : 0次 | 上传用户:mihu0907
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Background: Land-use change is one of the main drivers of the global erosion of biodiversity. In that context, it iscrucial to understand how landscape characteristics drive the presence of rare endangered species. Nevertheless, it is also important to study common species in multiple habitats, because they represent a large proportion of biodi-versity and are essential to maintain ecological functions. Interestingly, some habitats, as farmlands with permanent crops (e.g. vineyards), have been overlooked in the literature. Methods: In this study, we investigated the distribution of a widespread and common bird species, the Common Blackbird (Turdus merula), within and between the three main habitats of our study area (rural Western France). We specifically focused on (1) woodlands, (2) farmlands with a high vineyard coverage, and (3) moderately urbanized areas. Specifically, we aimed to assess the beneficial and detrimental effects of these habitats and their fine-scale composition on the presence of a common bird species, relying on a survey by point counts (nearly 100 locations). We studied the effects of habitats and gradients of fine-scale habitat composition on blackbird presence using logistic regression analyses. Results: Blackbirds were present in all studied habitats. However, their presence varied between habitats, being lower in vineyards than in woodlands and cities. In woodlands and cities, fine-scale analyses did not reveal any component driving the species' presence. However, we found that shrub and tree vegetation cover had a significant positive effect on blackbird presence in vineyards. Conclusions: Our results are in agreement with the definition of a generalist species. Interestingly, species distri-bution varied between habitats. The high presence of blackbirds in urban areas suggests that medium-sized cities, despite their artificialization, do not constrain the settlement of this former forest specialist and that green spaces may allow blackbirds to thrive in medium-sized cities. On the contrary, we found an impoverished presence of blackbirds in vineyards and a positive effect of vegetation on their presence in these landscapes. This suggests that permanent crops, and more generally farmlands, may impose important constraints to common species. Future studies should examine how to enhance biodiversity through agricultural management policies, especially in vineyards.
其他文献
中国人说,“姑娘十八一朵花,女人四十豆腐渣。”西方人则说:“有三样东西越老越好:烟斗、美酒和女人”。当四旦双冰已老,杨幂刘亦菲不小,90后才是鲜肉的观点流行于国内娱乐圈时,从85岁的脱衣舞娘到80岁的超级模特,国外的老女人们正当红。  44D脱衣舞娘的性图谱  法国人说:“有三样东西越老越好:烟斗、美酒和女人”。  85岁的德佩斯特正历久弥香。这位堪称世界上最老的脱衣舞娘,打破了人老色衰的传统观点
高职体育课程对于高职学生来说具有重要的意义,体育课程不仅是锻炼身体的地方,也是学习的场所。但是现在高职的体育课程内容存在一定的问题,需要进行一系列的改革,以此提高学
本文通过分析BOPPPS教学模式在国内外的研究现状,以运动与免疫章节为例,将BOPPPS模式融入《运动生理学》课堂教学,优化教学过程的设计,改进教学方法,试图提高学生的自主学习
Background: For all vertebrates in general, a concerted effort to move beyond single season research is vital toimprove our understanding of species ecology. Kn
应用元胞自动机-有限元模型(CAFE),模拟了不同碳、磷含量对易切削钢9SMn28凝固组织的影响,并通过热力学计算分析结果,优化了钢中的碳、磷含量。模拟结果表明,C含量在0.09 wt%
随着新课程的不断推进,国家和社会越来越需要德智体美全面发展的学生,要求的是综合素质优秀的学生。为了实现这一目标,培养全面发展的学生也就成为教学的主要任务。在这个过
在目前的小学体育与健康教学活动当中,德育教育的渗透是非常普遍的,这样不仅仅能够提高学生的体质,训练学生的运动能力,还能够帮助学生养成良好的行为习惯,锻炼学生的意志力,
患者陈X,男,18岁,工人。患者于晨5时突发上腹部剧痛并迅速漫延全腹,伴恶心、呕吐,吐出胃内容物。发病4小时后入院。查体:体温39℃,腹肌紧张,呈板状腹,压痛反跳癌明显,肝法音界消失,腹部
2014年4月4日,韩磊成功夺得《我是歌手》第二季总冠军,获封“歌王”称号。出道20年来,这位嗓音雄浑的蒙古族歌手八次登上央视春晚,先后为700多部影视剧演唱主题曲或插曲,获此
遥想2004年的王宝强,还是北影厂门口眨巴着一双单纯的大眼睛等待群演机会的地地道道的草根。如今,经过打拼之后的他已经成为内地首屈一指的男明星。十年的光景中.王宝强用他