نتایج جستجو برای: conservation biodiversity and natural resources

تعداد نتایج: 16921119  

Journal: :Proceedings. Biological sciences 2008
Tien Ming Lee Walter Jetz

Global biodiversity is under significant threat from the combined effects of human-induced climate and land-use change. Covering 12% of the Earth's terrestrial surface, protected areas are crucial for conserving biodiversity and supporting ecological processes beneficial to human well-being, but their selection and design are usually uninformed about future global change. Here, we quantify the ...

2010
Navjot S. Sodhi Madhu Rao

The present scenario of global change caused by unprecedented habitat loss, species declines, climate warming, and pollution with culminating in an environmental crisis that needs to be addressed with innovative and radical solutions. At least some failures of conservation can be attributed to poor involvement of women. To improve the role of women in conservation, we need to better understand ...

1999
Vernon Heywood

" Biodiversity is a non-detachable part of the concept of sustainability. ... biodiversity is essential for agricultural production, as agriculture should be for biodiversity conservation. " Brazilian Government proposal to SBSTTA of the CBD, Second Meeting Montreal 2–6 September 1996 Although the context of this paper is a " World Biodiversity Update, " any attempt at such would be presumptuou...

Journal: :Trends in ecology & evolution 2013
Felipe P L Melo Víctor Arroyo-Rodríguez Lenore Fahrig Miguel Martínez-Ramos Marcelo Tabarelli

With the decreasing affordability of protecting large blocks of pristine tropical forests, ecologists have staked their hopes on the management of human-modified landscapes (HMLs) to conserve tropical biodiversity. Here, we examine key forces affecting the dynamics of HMLs, and propose a framework connecting human disturbances, land use, and prospects for both tropical biodiversity and ecosyste...

2016
Dirk Nikolaus Karger Anna F. Cord Michael Kessler Holger Kreft Ingolf Kühn Sven Pompe Brody Sandel Juliano Sarmento Cabral Adam B. Smith Jens-Christian Svenning Hanna Tuomisto Patrick Weigelt Karsten Wesche

Department of Biology, University of Turku, Turku, Finland, Institute of Systematic Botany, University of Zurich, Zurich, Switzerland, Department of Computational Landscape Ecology, Helmholtz Centre for Environmental Research – UFZ, Leipzig, Germany, Biodiversity, Macroecology and Conservation Biogeography Group, University of Göttingen, Göttingen, Germany, Department of Community Ecology, Helm...

اسماعیلی ساری, عباس, رضایی, حمیدرضا, میرزایی, روح‌اله, همامی, محمودرضا,

Mapping spatial patterns of potential biodiversity threats is one of the important steps for effective conservation planning and activities. To determine the spatial patterns of threats in Golestan province, 12 criteria in four main groups including structural (fractal coefficient of perimeter, circularity ratio of area, average slope), compositional aspects of biodiversity (presence of species...

2013
John T. Legge Patrick J. Doran J. T. Legge

Many ecologically significant Midwestern rivers are heavily impacted by agriculture yet retain high value for conservation of biodiversity. To address these concerns, watershed managers promote conservation practices (e.g., use of cover crops). Yet taking action to promote implementation of these practices in a cost-effective manner across a watershed is difficult because we rarely know where p...

Journal: :Biological reviews of the Cambridge Philosophical Society 2006
David Dudgeon Angela H Arthington Mark O Gessner Zen-Ichiro Kawabata Duncan J Knowler Christian Lévêque Robert J Naiman Anne-Hélène Prieur-Richard Doris Soto Melanie L J Stiassny Caroline A Sullivan

Freshwater biodiversity is the over-riding conservation priority during the International Decade for Action - 'Water for Life' - 2005 to 2015. Fresh water makes up only 0.01% of the World's water and approximately 0.8% of the Earth's surface, yet this tiny fraction of global water supports at least 100000 species out of approximately 1.8 million - almost 6% of all described species. Inland wate...

Journal: :محیط زیست طبیعی 0
آرش کرمی کارشناس ارشد رشتۀ جنگلداری و اقتصادجنگل دانشکدۀ منابع طبیعی، دانشگاه تهرا جهانگیر فقهی دانشیار گروه جنگلداری و اقتصاد جنگل دانشکدۀ منابع طبیعی، دانشگاه تهران محمدرضا مروی مهاجر استادگروه جنگلداری و اقتصاد جنگل دانشکدۀ منابع طبیعی، دانشگاه تهران

without doubt is one important aspects of sustainable forest management the continuing forest regeneration. identify and determine is effective dispersal and distribution pattern of regeneration patches in various types of forest and its evolution, in maintaining biodiversity in natural ecosystems. purpose was chosen of gorazbon district kheyrod forest for study, all patches regeneration were l...

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