نتایج جستجو برای: ecological patches

تعداد نتایج: 122902  

Journal: :Queue 2015

2015
Hui Shi Zhaoping Yang Fang Han Tiange Shi Dong Li

Wetland protection, floral and faunal resource management, and habitat migration are all concerns for the ecological risk of wetland landscapes. Indices of landscape-scale ecological risks have the potential to influence changes in landscape patterns, the conditions of endangered plants and animals, and influences from nature and humans. Semi-variation function and gravity center models were us...

2010
Samuel A. Cushman Jeffrey S. Evans Kevin McGarigal Joseph M. Kiesecker

The fusion of individualistic community ecology with the Hutchinsonian niche concept enabled a broad integration of ecological theory, spanning all the way from the niche characteristics of individual species, to the composition, structure, and dynamics of ecological communities. Landscape ecology has been variously described as the study of the structure, function, and management of large hete...

Journal: :The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences 2023

Abstract. One of the most significant challenges in urban areas, where process rapid expansion takes place, is loss agricultural lands and natural habitats. The conversion these areas into residential commercial zones leads to a decline biodiversity progressive vital habitat areas. Analyzing connectivity conducting landscape measurements provide valuable insights for development land use manage...

2015
Damien J. Mannion Stephen Macknik

Asymmetries in the response to visual patterns in the upper and lower visual fields (above and below the centre of gaze) have been associated with ecological factors relating to the structure of typical visual environments. Here, we investigated whether the content of the upper and lower visual field representations in low-level regions of human visual cortex are specialised for visual patterns...

2000
Vincent A.A. Jansen Alun L. Lloyd

Multi-patch systems, in which several species interact in patches connected by dispersal, offer a general framework for the description and analysis of spatial ecological systems. This paper describes how to analyse the local stability of spatially homogeneous solutions in such systems. The spatial arrangement of the patches and their coupling is described by a matrix. For a local stability ana...

Journal: :The Journal of animal ecology 2010
Timothy M Smith Jeremy S Hindell Greg P Jenkins Rod M Connolly

1. Patch area and proximity of patch edge can influence ecological processes across patchy landscapes and may interact with each other. Different patch sizes have different amounts of core habitat, potentially affecting animal abundances at the edge and middle of patches. In this study, we tested if edge effects varied with patch size. 2. Fish were sampled in 10 various-sized seagrass patches (...

2015
Joaquín Ortego María P Aguirre Víctor Noguerales Pedro J Cordero

Anthropogenic habitat fragmentation has altered the distribution and population sizes in many organisms worldwide. For this reason, understanding the demographic and genetic consequences of this process is necessary to predict the fate of populations and establish management practices aimed to ensure their viability. In this study, we analyse whether the spatial configuration of remnant semi-na...

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