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05 - Assessing the performance of least cost path modelling in defining ecological corridors for birds in urban landscapes

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Presented at

XXV IUFRO WORLD CONGRESS

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Abstract

Although connectivity is fundamental for species conservation, this topic in urban landscapes remains understudied. In order to fill this gap, this project aims to verify the accuracy of least-cost path (LCP) modeling in finding the best routes for birds between urban parks. We also intend to evaluate how different aspects of urban landscapes (such as tree density and exposure to noise) influence the taxonomic and functional characteristics of bird communities inhabiting streets and urban parks of a Neotropical city (Bauru, São Paulo, Brazil). First, we produced a land use/land cover map to characterize the urban landscape structure. The connectivity was assessed by simulating least-cost paths between 10 urban parks using the LSCorridors software. With the simulation results, we selected 10 streets considered as preferential routes and 10 streets not crossed by least cost paths. Currently we are performing bird surveys using the point count method in these three contexts (30 sampling points). We expect that streets nearby or considered as preferential routes will present higher species richness, number of individuals, functional richness and evenness. We also expect that urban parks and streets with higher tree density and lower exposure to noise will positively influence the taxonomic and functional characteristics of these urban bird communities. With these results, it will be possible to suggest guidelines for urban planning in order to create multifunctional urban ecological corridors and management strategies to assist in the conservation of bird species inhabiting Neotropical cities.

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© Copyright 2020 Morressier GmbH.
All rights reserved.