نتایج جستجو برای: lands

تعداد نتایج: 10871  

Journal: :Nature 1872

2005
D. Evan Mercer

Throughout the 20th century, many countries created national parks, forests, nature reserves, and sanctuaries to provide benefits that are underproduced on private lands . Private lands are now especially valuable for providing ecological services that publi c lands cannot provide, due to the increasing demands for all uses and the political and economic conflicts associated with allocating pub...

2016
J. Tatarko S.J. van Donk J.C. Ascough D.G. Walker

Wind erosion not only affects agricultural productivity but also soil, air, and water quality. Dust and specifically particulate matter ≤10 μm (PM-10) has adverse effects on respiratory health and also reduces visibility along roadways, resulting in auto accidents. The Wind Erosion Prediction System (WEPS) was developed by the USDA-Agricultural Research Service to simulate wind erosion and prov...

2015
Mehdi Momeni

Urban planning and management in economic, social, cultural, health and hygienic, and safety and security fields is one of the main concerns of officials and citizens in each country. Nowadays, the necessity of green lands in cities has become very important. Green lands refine the air and reduce air pollutants, strike ecological balance, and absorb piercing sickening sounds. Today, people are ...

Journal: :Current Biology 2011
Nigel Williams

The proposals have also drawn anger from the energy industry. Kathleen Sgamma, a director of the Western Energy Alliance, which represents 400 oil and natural-gas companies, said the new policy could block some promising lands from drilling. “They’re treating lands arbitrarily as de facto wildernesses,” she said. And Dean Heller, a Republican representative from Nevada, said: “The message of th...

2001
David James Lewis

In presenting this thesis in partial fulfillment of the requirements for an advanced degree at The University of Maine, I agree that the Library shall make it freely available for inspection. I further agree that permission for " fair use " copying of this thesis for scholarly purposes may be granted by the Librarian. It is understood that any copying or publication of this thesis for financial...

Journal: :The Journal of animal ecology 2017
Shawn H Smith Karen Steenhof Christopher J W McClure Julie A Heath

Warming temperatures cause temporal changes in growing seasons and prey abundance that drive earlier breeding by birds, especially dietary specialists within homogeneous habitat. Less is known about how generalists respond to climate-associated shifts in growing seasons or prey phenology, which may occur at different rates across land cover types. We studied whether breeding phenology of a gene...

2017
Shin Ah Oh Chang Liu Joyce C Pressley

There are large disparities in American Indian pediatric motor vehicle (MV) mortality with reports that several factors may contribute. The Fatality Analysis Reporting System for 2000-2014 was used to examine restraint use for occupants aged 0-19 years involved in fatal MV crashes on Indian lands (n = 1667) and non-Indian lands in adjacent states (n = 126,080). SAS GLIMMIX logistic regression w...

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