نتایج جستجو برای: especially in vegetation areas

تعداد نتایج: 17004845  

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2008
P M Maia-Barbosa R S Peixoto A S Guimarães

The present study was carried out in Lake Dom Helvécio, in the state of Minas Gerais, with two main objectives: to demonstrate the contribution of the littoral zone, in order to better characterize zooplankton fauna; and to assess the distribution of zooplankton species in different habitats, i.e., the littoral zone with and without aquatic vegetation. The samples were collected in February and...

2004
L. Mathys N. E. Zimmermann A. Guisan

Forests are usually assessed as a discrete land cover type. However, we hypothesise that the resources associated with forests show diverse spatial patterns, only partially matching current forest boundaries. Therefore tree vegetation parameters related to relevant forest resources at the landscape level were assessed for the Canton of Geneva in western Switzerland. LIDAR based digital terrain ...

2008
MICHAEL J. BREWER TAKUJI NOMA NORMAN C. ELLIOTT ALEXANDRA N. KRAVCHENKO

Functioning of plant-aphid-natural enemy interactions may be associated with the structure and composition of withinfield vegetation, neighborhood fields and field borders, and the regional plant community of cropped and noncropped areas. Farmand region-scale vegetation in the wheat-growing area of the North American Great Plains was hypothesized to effect the abundance of two hymenopteran para...

2011
Kan-ichiro Mochizuki Keitarou Hara Shin’ichi Okamoto

The UN Conference on Environment and Development (UNCED) Agenda 21 issue for sustainable development emphasizes on an integrated approach for the maintenance and management of land resources. Conservation of biodiversity has become an important environmental issue after the UNCED. Habitat fragmentation caused by the sprawl of urban development is becoming one of the major environmental problems...

پایان نامه :دانشگاه تربیت معلم - سبزوار - دانشکده ادبیات و زبانهای خارجی 1390

this study investigated the effects of planning on second-language written production with regard to task type. the participants were 75 iranian learners of english as a foreign language attending a private foreign language institution. they were asked to complete two different types of writing tasks (expository writing task and argumentative writing task) in different planned conditions (indiv...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شاهد - دانشکده هنر 1391

now-a-days graphic design plays a major role in influencing culture, society, business, and customers, in such a way that one could look upon every individual as a potential customer. graphic designers seek to identify customers needs and find an intelligent solution for them. correct identification and understanding of those needs is the first step towards achieving ones goals. marketing knowh...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده ادبیات و علوم انسانی 1390

the present study was concerned with exploring the frequency and linguistic focus of corrective feedback types given by novice and experienced female teachers working with young learners and compared it with those of elementary classes for adults. moreover, it aimed at measuring learners’ acknowledgement of teachers’ corrective feedback in the form of uptake in relation to linguistic coverage o...

2017
Yulong Zhang Conghe Song Lawrence E. Band Ge Sun Junxiang Li

Article history: Received 2 July 2016 Received in revised form 4 December 2016 Accepted 29 December 2016 Available online 25 January 2017 Accurately monitoring global vegetation dynamics with modern remote sensing is critical for understanding the functions and processes of the biosphere and its interactions with the planetary climate. The MODerate resolution Imaging Spectroradiometer (MODIS) v...

Plant species distribution, composition and diversity in deserts of arid and semi-arid areas, especially saltland; depend on soil physical and chemical gradients. The aim of this research was to investigate changes in the plant species diversity and richness along a soil salinity gradient in the margin rangelands of Petregan Playa. After vegetation zoning in relation to soil salinity, random-sy...

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