نتایج جستجو برای: scale ecological research at various spatial

تعداد نتایج: 5581658  

Journal: :Ecology letters 2013
Erin E Peterson Jay M Ver Hoef Dan J Isaak Jeffrey A Falke Marie-Josée Fortin Chris E Jordan Kristina McNyset Pascal Monestiez Aaron S Ruesch Aritra Sengupta Nicholas Som E Ashley Steel David M Theobald Christian E Torgersen Seth J Wenger

Dendritic ecological networks (DENs) are a unique form of ecological networks that exhibit a dendritic network topology (e.g. stream and cave networks or plant architecture). DENs have a dual spatial representation; as points within the network and as points in geographical space. Consequently, some analytical methods used to quantify relationships in other types of ecological networks, or in 2...

2017
Yuan Gao Chuanrong Zhang Qingsong He Yaolin Liu

Ecological security is an important research topic, especially urban ecological security. As highly populated eco-systems, cities always have more fragile ecological environments. However, most of the research on urban ecological security in literature has focused on evaluating current or past status of the ecological environment. Very little literature has carried out simulation or prediction ...

Journal: :Trends in ecology & evolution 2008
Mark C Urban Mathew A Leibold Priyanga Amarasekare Luc De Meester Richard Gomulkiewicz Michael E Hochberg Christopher A Klausmeier Nicolas Loeuille Claire de Mazancourt Jon Norberg Jelena H Pantel Sharon Y Strauss Mark Vellend Michael J Wade

Research on the interactions between evolutionary and ecological dynamics has largely focused on local spatial scales and on relatively simple ecological communities. However, recent work demonstrates that dispersal can drastically alter the interplay between ecological and evolutionary dynamics, often in unexpected ways. We argue that a dispersal-centered synthesis of metacommunity ecology and...

Journal: :Comparative biochemistry and physiology. Part A, Molecular & integrative physiology 2007
Christopher J Osovitz Gretchen E Hofmann

A new approach toward understanding marine ecosystems has emerged through the integration of ecological physiology and macroecology. This multidisciplinary approach, titled here marine macrophysiology, facilitates unique insight into the foundation of macro-scale ecological patterns, such as biogeographic distributions, via examination of functional attributes of marine organisms across large s...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد 1388

hedging is a multi-purpose rhetorical strategy which is usually used in scientific arguments to secure ratification of claims, reduce the risk of negation, avoid conflict, manage disagreement and leave room for the audience to assess presented information. hedges are frequently used in research articles to mitigate the findings of research endeavors. the present research aims to investigate the...

2011
Lara Souza Windy A. Bunn Daniel Simberloff Robert M. Lawton Nathan J. Sanders

1. Biological invasions threaten biodiversity, and understanding the factors that influence a community’s susceptibility to invasion informs both management of invasive species and conservation efforts towards promoting biodiversity. 2. In this study, we examined the native–exotic richness relationships (NERR) at two spatial scales and asked what variables mediate the relationship between nativ...

2008
PATRICK McCONNEY KEMRAJ PARSRAM

Small-scale fisheries in the eastern Caribbean are examples of complex adaptive social-ecological systems. However, there is an urgent need to strengthen capacity and networks for adaptation and resilience in order to facilitate fishery sustainability through present and planned marine resource governance initiatives. This takes into account organizations and institutions of governance operatin...

2016
Yi Lu Xiangrong Wang Yujing Xie Yiyang Xu

Urban ecological security is the basic principle of national ecological security. However, analyses of the spatial and temporal dynamics of ecological security remain limited, especially those that consider different scenarios of urban development. In this study, an integrated method is proposed that combines the Conversion of Land Use and its Effects (CLUE-S) model with the Pressure–State–Resp...

2013
LANCE B. MCNEW

Ecological relationships of animals and their environments are known to vary spatially and temporally across scales. However, common approaches for evaluating resource selection by animals assume that the processes of habitat selection are stationary across space. The assumption that habitat selection is spatially homogeneous may lead to biased inference and ineffective management. We present t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده مهندسی 1387

abstract this paper discusses several commonly used models for strategic marketing¹ including market environmental analysis methods (i.e. swot and pest analysis) and strategic marketing tools and techniques (i.e. boston matrix and shell directional policy matrix)and shows how these models may help a firm to achieve its strategic goals. at first, the main reason for doing this research is de...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید