نتایج جستجو برای: is disturbed based upon biotic eg climate

تعداد نتایج: 8489563  

پایان نامه :0 1374

this thesis is going to delineate the concept of the reader as implied in 18th century literary theory; based on the study of the major reader oriented elements of criticism of the age-taste, the sublime, and aesthetic pleasure-its aim is to explain what sott of reader is implied and what kind of response on the part of the reader is proposed in 18th century english literary theory and aestheti...

Some riparian areas of the country are in danger of deterioration due to uncontrolled exploitation coupled with loose implementation of environmental protection policies and regulations. Muleta River, a major watershed in Bukidnon, Philippines, was assessed to determine the present condition of its riparian habitat. Abiotic and biotic conditions of the river were assessed. Other factors includi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1389

there are two major theories of measurement in psychometrics: classical test theory (ctt) and item-response theory (irt). despite its widespread and long use, ctt has a number of shortcomings, which make it problematic to be used for practical and theoretical purposes. irt tries to solve these shortcomings, and provide better and more dependable answers. one of the applications of irt is the as...

 Studying climate change and its effect on the intensity and frequency of drought can help the proper use of water resources and adaptation to the destructive effects of the drought phenomenon in the future decades. In recent decades, rising global temperatures have disturbed the planetchr('39')s climate balance and caused widespread climate change in most parts of the world. This research trie...

2014
Sharon Bewick Katharine L Stuble Jean-Phillipe Lessard Robert R Dunn Frederick R Adler Nathan J Sanders

Global climate change will remodel ecological communities worldwide. However, as a consequence of biotic interactions, communities may respond to climate change in idiosyncratic ways. This makes predictive models that incorporate biotic interactions necessary. We show how such models can be constructed based on empirical studies in combination with predictions or assumptions regarding the abiot...

2008
Jarkko Hantula Heikki Henttonen Pekka Niemelä Elina Vapaavuori Sune Linder Halvor Solheim Matthew P. Ayres

Since the early 1990s, it has been hypothesized that the projected trajectory of climate change would have rapid consequential impacts on biotic disturbance in forests. The argument was mainly based on two points: (1) even in the absence of directional changes in climate, forests throughout the world are strongly influenced by episodic events of pestilence, and (2) insects are very responsive t...

2014
Astrid Welk Erik Welk Helge Bruelheide

This study presents an experimental approach to assess the relative importance of climatic and biotic factors as determinants of species' geographical distributions. We asked to what extent responses of grassland plant species to biotic interactions vary with climate, and to what degree this variation depends on the species' biogeography. Using a gradient from oceanic to continental climate rep...

2015
Neal J Enright Joseph B Fontaine David MJS Bowman Ross A Bradstock Richard J Williams

© The Ecological Society of America www.frontiersinecology.org D this century, climate change is projected to cause profound plant species losses and migrations – and shifts in ecosystem structure and function – in many parts of the world (including several biodiversity hotspots; Malcolm et al. 2006). However, such assessments are based almost entirely on empirical niche (or climate envelope) m...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1391

the ability of composing a coherent and extended piece of writing in second language is considered as a fundamental factor to convey information and ideas of learners through the academic issues. although learners may achieve a perfect academic writing skill through assigning the l2 tasks in content based instruction, but demonstration of their abilities may be related to their ability in l1 es...

2010
Yoann Le Bagousse-Pinguet

Direct facilitation among plants has recently been included into the humped-back diversitybiomass relationship along environmental severity gradients. However, recent evidence stresses the occurrence of indirect facilitation due to biotic disturbance under a wide range of environmental severity, and including indirect facilitation will thus bring these conceptual frameworks up to date. We propo...

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