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Movement of feeder-using songbirds: the influence of urban features

机译:食鸟鸣鸟的运动:城市风貌的影响

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摘要

Private gardens provide vital opportunities for people to interact with nature. The most popular form of interaction is through garden bird feeding. Understanding how landscape features and seasons determine patterns of movement of feeder-using songbirds is key to maximising the well-being benefits they provide. To determine these patterns we established three networks of automated data loggers along a gradient of greenspace fragmentation. Over a 12-month period we tracked 452 tagged blue tits Cyantistes caeruleus and great tits Parus major moving between feeder pairs 9,848 times, to address two questions: (i) Do urban features within different forms, and season, influence structural (presence-absence of connections between feeders by birds) and functional (frequency of these connections) connectivity? (ii) Are there general patterns of structural and functional connectivity across forms? Vegetation cover increased connectivity in all three networks, whereas the presence of road gaps negatively affected functional but not structural connectivity. Across networks structural connectivity was lowest in the summer when birds maintain breeding territories, however patterns of functional connectivity appeared to vary with habitat fragmentation. Using empirical data this study shows how key urban features and season influence movement of feeder-using songbirds, and we provide evidence that this is related to greenspace fragmentation.
机译:私家花园为人们与自然互动提供了重要的机会。互动的最流行形式是通过花园鸟类喂食。了解景观特征和季节如何确定使用馈线的鸣禽的活动方式是最大化它们所带来的福祉的关键。为了确定这些模式,我们沿着绿色空间碎片的梯度建立了三个自动数据记录器网络。在12个月的时间内,我们跟踪了452个加标签的蓝山雀Cyantistes caeruleus和大山雀Parus主要在喂食器对之间移动9,848次,以解决两个问题:(i)不同形式的城市特征和季节是否会影响结构(存在与否)鸟之间的馈线之间的连接数)和功能(这些连接的频率)连通性? (ii)是否存在跨形式的结构和功能连接的一般模式?植被覆盖了所有三个网络中的连通性,而道路间隙的存在对功能连通性(而不是结构连通性)产生负面影响。在夏季,当鸟类维持繁殖区域时,跨网络的结构连接性最低,但是功能连接的模式似乎随生境破碎化而变化。使用经验数据,本研究显示了关键的城市特征和季节如何影响使用馈线的鸣禽的活动,并且我们提供了证据,这与绿地破碎化有关。

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