نتایج جستجو برای: scale ecological research at various spatial

تعداد نتایج: 5581658  

Journal: مدیریت شهری 2015
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Nowadays, Spatial and social inequalities are universal and expanding phenomenon. Identification and spatial analysis of social, economic and ecological inequalities in metropolises is one of the essential and basic proceeding for planning and achieving urban sustainable development. The present research method is descriptive-analytical and using 13 sub criteria based on three main criteria of ...

Journal: :Ecology letters 2007
Evan H Campbell Grant Winsor H Lowe William F Fagan

Spatial structure regulates and modifies processes at several levels of ecological organization (e.g. individual/genetic, population and community) and is thus a key component of complex systems, where knowledge at a small scale can be insufficient for understanding system behaviour at a larger scale. Recent syntheses outline potential applications of network theory to ecological systems, but d...

2004
P. Aplin

Much ecological analysis requires detailed spatial observation, traditionally conducted through field measurement. Remote sensing has been tested extensively as a means of ecological investigation, but many such studies were limited by the relatively coarse spatial resolution of the imagery used. The new generation of fine spatial resolution satellite sensors provides an opportunity for detaile...

Journal: :Remote Sensing 2014
Markus Metz Duccio Rocchini Markus Neteler

Temperature is a main driver for most ecological processes, and temperature time series provide key environmental indicators for various applications and research fields. High spatial and temporal resolutions are crucial for detailed analyses in various fields of research. A disadvantage of temperature data obtained by satellites is the occurrence of gaps that must be reconstructed. Here, we pr...

2006
PENN LLOYD THOMAS E. MARTIN ROLAND L. REDMOND MELISSA M. HART UTE LANGNER RONALD D. BASSAR

Ecological processes are dependent on the spatial and temporal scale at which they are viewed, and a process at any one scale may be influenced by factors at other scales. Thus, an ecological process at a broader scale may act to constrain processes at finer scales (Allen and Starr 1982, Thompson et al. 2000). Developing a full understanding of the spatial scales at which habitat conditions imp...

درویشی, آصف, سفیانیان, علیرضا , فاخران, سیما , قربانی, مهدی ,

Large scale land use/cover changes and habitat fragmentation have been associated with the decline of many wildlife populations in ecological sensitive regions. The main goal of this study was to quantify the spatial pattern changes in Caucasian Black Grouse habitat in Arasbaran Biosphere Reserve, Northwest of Iran in a period of 24 years (1987–2011). Caucasian black grouse (Tetrao mlokosiewicz...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده ادبیات و علوم انسانی 1391

nowadays enhancing critical thinking in learners is considered one of the foreign language teachers’ tasks due to its high position in foreign language classrooms. when it comes to selecting materials for language classrooms, there are obviously some criteria that teachers should apply. the present study aimed at a critical thinking based analysis of ten picture story books and ten folktales th...

2002

Our understanding of ecosystem dynamics is directly linked to the scale at which we make our ecological observations. The ecological dynamics of Pleistocene coral communities varies with spatial and temporal scale of study. Reef coral communities studied over small spatial and temporal scales show ecological chaos where disturbance prevents ecological equilibrium, and those studied at the large...

2011
Benoit Gendreau-Berthiaume

Spatial structure in ecological communities is increasingly recognized as being important for the understanding of the processes driving communities. In ecological communities, spatial patterns are either driven by environmental factors or biotic processes. Thus to adequately understand ecological communities it is important to identify the spatial structures and then relate these patterns to u...

2017
Heng Bao John M. Fryxell Hui Liu Hongliang Dou Yingjie Ma Guangshun Jiang

Resource selection of herbivores is a complex ecological process that operates in relation to biological or non-biological factors, which may affect the feeding and movement, and subsequently their spatial distribution and environmental stress. Here, we estimated moose (Alces alces cameloides) resource selection for habitat variables and the effect of interspecific interactions related to roe d...

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