نتایج جستجو برای: habitat patches

تعداد نتایج: 75719  

1999
M. G. Chapman

Information about how animals move through complex and patchy habitats is crucial to understanding how animals utilize habitat, spatial and temporal patterns of distribution and abundance, population dynamics and patterns of biodiversity. Dispersal may be influenced by many factors, including intrinsic characteristics of a species (e.g. its mobility, specificity for different resources or its a...

Journal: :Current Biology 2011
Tonya A. Lander Daniel P. Bebber Chris T.L. Choy Stephen A. Harris David H. Boshier

Global declines in pollinators, associated with land-use change [1-6] and fragmentation [7-10], constitute a serious threat to crop production and biodiversity [11]. Models investigating impacts of habitat fragmentation on pollen flow have categorized landscapes simply in terms of habitat and nonhabitat. We show that pollen flow depends strongly on types of land use between habitat fragments. W...

Journal: :The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences 2015

Journal: :Ecological Informatics 2015
Nicholas W. Synes Kevin Watts Stephen C. F. Palmer Greta Bocedi Kamil A. Barton Patrick E. Osborne Justin M. J. Travis

An individual-based model of animal dispersal and population dynamics was used to test the effects of different climate change adaptation strategies on species range shifting ability, namely the improvement of existing habitat, restoration of low quality habitat and creation of new habitat. These strategies were implemented on a landscape typical of fragmentation in the United Kingdom using spa...

2013
Hattie L A Bartlam-Brooks Mpaphi C Bonyongo Stephen Harris

Most large-bodied wildlife populations in sub-Saharan Africa only survive in conservation areas, but are continuing to decline because external changes influence ecological processes within reserves, leading to a lack of functionality. However, failure to understand how landscape scale changes influence ecological processes limits our ability to manage protected areas. We used GPS movement data...

2014
Sebastian Hopfenmüller Ingolf Steffan-Dewenter Andrea Holzschuh

Land-use intensification and loss of semi-natural habitats have induced a severe decline of bee diversity in agricultural landscapes. Semi-natural habitats like calcareous grasslands are among the most important bee habitats in central Europe, but they are threatened by decreasing habitat area and quality, and by homogenization of the surrounding landscape affecting both landscape composition a...

2012
Jason G. Estes Nurzhafarina Othman Sulaiman Ismail Marc Ancrenaz Benoit Goossens Laurentius N. Ambu Anna B. Estes Peter A. Palmiotto

The approximately 300 (298, 95% CI: 152-581) elephants in the Lower Kinabatangan Managed Elephant Range in Sabah, Malaysian Borneo are a priority sub-population for Borneo's total elephant population (2,040, 95% CI: 1,184-3,652). Habitat loss and human-elephant conflict are recognized as the major threats to Bornean elephant survival. In the Kinabatangan region, human settlements and agricultur...

2016
Yoni Gavish Yaron Ziv

Understanding the main processes that affect community similarity have been the focus of much ecological research. However, the relative effects of environmental and spatial aspects in structuring ecological communities is still unresolved and is probably scale-dependent. Here, we examine the effect of habitat identity and spatial distance on fine-grained community similarity within a biogeogra...

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