نتایج جستجو برای: landscape structure

تعداد نتایج: 1628282  

Journal: :Molecular ecology 2009
Julie A Lee-Yaw Andrew Davidson Brad H McRae David M Green

Understanding factors that influence population connectivity and the spatial distribution of genetic variation is a major goal in molecular ecology. Improvements in the availability of high-resolution geographic data have made it increasingly possible to quantify the effects of landscape features on dispersal and genetic structure. However, most studies examining such landscape effects have bee...

1996
Wim Hordijk

In many complex systems control situations, searching for solutions or alternatives is involved. Searching for solutions can be modeled by a search on a tness landscape. Knowing the structure of the underlying landscape can help in explaining or predicting aspects of an actual search on it, and thus in controlling the system that is living on the landscape. This paper presents results on charac...

2011
Gregory Gordon Brown GREGORY GORDON BROWN

Landscape metrics are used in landscape ecology to quantify landscape characteristics related to structure, function and change by quantifying the structure and distributional pattern of landscape elements such as plants, animals and other physical landscape features. To date, there has been little published research on landscape metrics that include social perceptions of landscape. In this pap...

2016
Felix Eigenbrod

Our understanding of the effects of landscape structure on ecosystem services (ES) remains at a very early stage, despite a large body of literature on the effects of the composition and configuration of natural land cover on some ES. Here, I argue that a comprehensive understanding of the effects of landscape structure on ES requires us to reconsider what constitutes landscape structure for ES...

Journal: :محیط زیست طبیعی 0
مهدی شیخ گودرزی دانشجوی کارشناسی ارشد محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، ایران افشین علیزاده شعبانی استادیار محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، ایران عبدالرسول سلمان ماهینی دانشیار محیط زیست، دانشکده شیلات و محیط زیست، دانشگاه گرگان، ایران جهانگیر فقهی دانشیار جنگلداری، دانشکده منابع طبیعی، دانشگاه تهران، ایران

human activities induced changes in land cover/use have extensive impacts on the landscape. in recent years, these changes had an increasingly growth due to irrational use of the natural resources in iran. hence, considering the negative effects of the inappropriate use of land and land-use change, understanding of the landscape changes over time is necessary to planning and implementation of s...

Journal: :Journal of the Japanese Institute of Landscape Architects 1987

2012
J. Nevil Amos Andrew F. Bennett Ralph Mac Nally Graeme Newell Alexandra Pavlova James Q. Radford James R. Thomson Matt White Paul Sunnucks

Inference concerning the impact of habitat fragmentation on dispersal and gene flow is a key theme in landscape genetics. Recently, the ability of established approaches to identify reliably the differential effects of landscape structure (e.g. land-cover composition, remnant vegetation configuration and extent) on the mobility of organisms has been questioned. More explicit methods of predicti...

Journal: :Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 2013

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