نتایج جستجو برای: scale ecological research at various spatial

تعداد نتایج: 5581658  

2017
Zhiwei Zhong Xiaofei Li Dean Pearson Deli Wang Dirk Sanders Yu Zhu Ling Wang

Trophic interactions and ecosystem engineering are ubiquitous and powerful forces structuring ecosystems, yet how these processes interact to shape natural systems is poorly understood. Moreover, trophic effects can be driven by both density- and trait-mediated interactions. Microcosm studies demonstrate that trait-mediated interactions may be as strong as density-mediated interactions, but the...

2013
Ivan Paz-Vinas Lise Comte Mathieu Chevalier Vincent Dubut Charlotte Veyssiere Gaël Grenouillet Geraldine Loot Simon Blanchet

Prioritizing and making efficient conservation plans for threatened populations requires information at both evolutionary and ecological timescales. Nevertheless, few studies integrate multidisciplinary approaches, mainly because of the difficulty for conservationists to assess simultaneously the evolutionary and ecological status of populations. Here, we sought to demonstrate how combining gen...

2016
Fabio Peruzzo Sandro zaele

Over the last few decades, ecologists have come to appreciate that key ecological patterns, which describe ecological communities at relatively large spatial scales, are not only scale dependent, but also intimately intertwined. The relative abundance of species – which informs us about the commonness and rarity of species – changes its shape from small to large spatial scales. The average numb...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2007
Andrew Clarke Nadine M Johnston Eugene J Murphy Alex D Rogers

Antarctica offers a unique natural laboratory for undertaking fundamental research on the relationship between climate, evolutionary processes and molecular adaptation. The fragmentation of Gondwana and the development of wide-scale glaciation have resulted in major episodes of extinction and vicariance, as well as driving adaptation to an extreme environment. On shorter time-scales, glacial cy...

Journal: :محیط شناسی 0
آرمان خواجه برج سفیدی دانشجوی دکتری شهرسازی، دانشکده هنر، معماری و شهرسازی، واحد نجف آباد، دانشگاه آزاد اسلامی، نجف آباد، اصفهان، ایران. منوچهر طبیبیان استاد گروه شهرسازی، پردیس هنرهای زیبا، دانشگاه تهران، تهران، ایران. شیرین طغیانی استاد یار گروه شهرسازی، دانشکده هنر، معماری و شهرسازی، واحد نجف آباد، دانشگاه آزاد اسلامی، نجف آباد، اصفهان، ایران.

introduction ecosystem services are the benefits that human derives from the ecosystems. these are servicessuch as goods and products (e.g., fresh water, fuel), regulation of natural processes (e.g., climate, flooding, erosion), and nonmaterial benefits (e.g., recreation, aesthetic enjoyment). many cities are located in the important ecological areas. currently 29 out of the 825 ecological zone...

2011
E. Lugato G. Alberti B. Gioli J. O. Kaplan A. Peressotti F. Miglietta

E. Lugato, G. Alberti, B. Gioli, J. O. Kaplan, A. Peressotti, and F. Miglietta Institute of Biometeorology (IBIMET), National Research Council (CNR), via Caproni 8, 50145, Firenze, Italy Departiment of Agricultural and Environmental Sciences, via delle Scienze 208 – 33100 Udine, Italy ARVE Group, Environmental Engineering Institute, École Polytechnique Fédéral de Station 2 CH-1015 Lausanne, Swi...

Dorna Rezaei, Elmira Kafash Saei Sehar Delpasand Yousef Askari,

Spatial pattern of trees can possibly indicate stand history, population dynamics, and species competition. This research was investigated in the Chahartagh forest reserve, Ardal region, chaharmehal and Bakhtiari Province, Central Zagros forest, and southwest Iranian state. In this study 53 hectare of the study area was selected and perfect inventory.  Information includes the position and kind...

Dorna Rezaei Elmira Kafash Saei Sehar Delpasand Yousef Askari,

Spatial pattern of trees can possibly indicate stand history, population dynamics, and species competition. This research was investigated in the Chahartagh forest reserve, Ardal region, chaharmehal and Bakhtiari Province, Central Zagros forest, and southwest Iranian state. In this study 53 hectare of the study area was selected and perfect inventory.  Information includes the position and kind...

Dorna Rezaei Elmira Kafash Saei Sehar Delpasand Yousef Askari,

Spatial pattern of trees can possibly indicate stand history, population dynamics, and species competition. This research was investigated in the Chahartagh forest reserve, Ardal region, chaharmehal and Bakhtiari Province, Central Zagros forest, and southwest Iranian state. In this study 53 hectare of the study area was selected and perfect inventory.  Information includes the position and kind...

Dorna Rezaei, Elmira Kafash Saei Sehar Delpasand Yousef Askari,

Spatial pattern of trees can possibly indicate stand history, population dynamics, and species competition. This research was investigated in the Chahartagh forest reserve, Ardal region, chaharmehal and Bakhtiari Province, Central Zagros forest, and southwest Iranian state. In this study 53 hectare of the study area was selected and perfect inventory.  Information includes the position and kind...

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