نتایج جستجو برای: habitat destruction

تعداد نتایج: 89758  

2002
Javier Sawchik Marc Dufrêne Philippe Lebrun Nicolas Schtickzelle Michel Baguette

Population viability analysis (PVA) and metapopulation theory are valuable tools to model the dynamics of spatially structured populations. In this article we used a spatially realistic population dynamic model to simulate the trajectory of a Proclossiana eunomia metapopulation in a network of habitat patches located in the Belgian Ardenne. Sensitivity analysis was used to evaluate the relative...

Journal: :Bulletin of mathematical biology 2008
Min Su Cang Hui Yanyu Zhang Zizhen Li

Epidemic transmission is one of the critical density-dependent mechanisms that affect species viability and dynamics. In a predator-prey system, epidemic transmission can strongly affect the success probability of hunting, especially for social animals. Predators, therefore, will suffer from the positive density-dependence, i.e., Allee effect, due to epidemic transmission in the population. The...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2008
Laura R Prugh Karen E Hodges Anthony R E Sinclair Justin S Brashares

Habitat destruction has driven many once-contiguous animal populations into remnant patches of varying size and isolation. The underlying framework for the conservation of fragmented populations is founded on the principles of island biogeography, wherein the probability of species occurrence in habitat patches varies as a function of patch size and isolation. Despite decades of research, the g...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Matthew L Forister Andrew C McCall Nathan J Sanders James A Fordyce James H Thorne Joshua O'Brien David P Waetjen Arthur M Shapiro

Climate change and habitat destruction have been linked to global declines in vertebrate biodiversity, including mammals, amphibians, birds, and fishes. However, invertebrates make up the vast majority of global species richness, and the combined effects of climate change and land use on invertebrates remain poorly understood. Here we present 35 years of data on 159 species of butterflies from ...

Journal: :Integrative and comparative biology 2010
Mads S Thomsen Thomas Wernberg Andrew Altieri Fernando Tuya Dana Gulbransen Karen J McGlathery Marianne Holmer Brian R Silliman

The importance of positive interactions is increasingly acknowledged in contemporary ecology. Most research has focused on direct positive effects of one species on another. However, there is recent evidence that indirect positive effects in the form of facilitation cascades can also structure species abundances and biodiversity. Here we conceptualize a specific type of facilitation cascade-the...

2001
Will Mackenzie Jennifer Shaw

The British Columbia Ministry of Forests is developing a practical classification system for British Columbia’s wetland and riparian ecosystems. The project has identified a diversity of wetland and riparian ecosystem types, in terms of environmental profiles, regional distribution, and habitat values. Urbanization, agricultural development, hydrological modification, livestock grazing, intensi...

2013
Miguel A. Fortuna Abhay Krishna Jordi Bascompte M. A. Fortuna

Recent studies have described the architecture of plant–animal mutualistic networks, but little is known on how such networks disassemble as a consequence of global change. This is a relevant question because 1) species interactions seem to be very susceptible to habitat loss, and 2) the loss of a critical fraction of interactions can abruptly change the topology of the entire network with pote...

Journal: :The Onderstepoort journal of veterinary research 2003
A Estrada-Peña

Models predicting current habitat availability for four prominent tick species in Africa (Boophilus decoloratus, Amblyomma hebraeum, Rhipicephalus appendiculatus and Hyalomma truncatum) were constructed using remotely sensed information about abiotic variables and a point-to-point similarity metric. Year-to-year variations in the forecasted habitat suitability over the period 1983-2000 show a c...

Journal: :Oryx 2023

Abstract Large carnivores such as the jaguar Panthera onca are particularly susceptible to population decline and local extinction a result of habitat loss. Here we report on long-term monitoring in mixed land-use area eastern lowlands Bolivia from March 2017 December 2019. We recorded 15 individuals four reproduction events (five offspring three females), suggesting that our study harbours res...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید