نتایج جستجو برای: grazing reserve and climate change

تعداد نتایج: 16913274  

2007
Maria Silvia Muylaert Christiano Pires de Campos Luiz Pinguelli Rosa

Human activities have always led to the emission of greenhouse gases; atmospheric concentrations have been increasing during the last century; and present-day climate change is a result of past emissions. This paper presents historical emissions (1890–1998) by country due to CH4 enteric fermentation and N2O animal manure management from domestic livestock (excluding animals grazing). Two indica...

Amanat, Nasir , Askari , Ali , Pirposhteh, Elham Akhlaghi , Sadeghi, Mohsen P , Sahlabadi, Ali Salehi ,

Climate change is a slow and long-term change that is different from other types of crises, and its effects will eventually cause the paralysis of society and the world economy. Considering the last climate change summit in Glasgow and the previous summit, according to the authors of this text, preventing and dealing with climate change in the present era will not be possible except with the co...

Journal: :اقتصاد و توسعه کشاورزی 0
سکینه مومنی منصور زیبایی

over the coming decades, global change will have an impact on food and water security and there are strong indications that developing countries will bear the brunt of adverse consequences from climate change. agricultural sector is the most vulnerable to climate change, because of its dependence on water and temperature conditions. consequently, it is important to understand the impacts of cli...

2015
Joshua Lawler James Watson Edward Game

An increased understanding of the current and potential future impacts of climate change has significantly influenced conservation in practice in recent years. Climate change has necessitated a shift toward longer planning time horizons, moving baselines, and evolving conservation goals and targets. This shift has resulted in new perspectives on, and changes in, the basic approaches practitione...

2016
Paul Beier Joshua Lawler Edward Game

An increased understanding of the current and potential future impacts of climate change has significantly influenced conservation in practice in recent years. Climate change has necessitated a shift toward longer planning time horizons, moving baselines, and evolving conservation goals and targets. This shift has resulted in new perspectives on, and changes in, the basic approaches practitione...

Journal: :PLoS Biology 2007
Walter Jetz David S Wilcove Andrew P Dobson

Over the past few decades, land-use and climate change have led to substantial range contractions and species extinctions. Even more dramatic changes to global land cover are projected for this century. We used the Millennium Ecosystem Assessment scenarios to evaluate the exposure of all 8,750 land bird species to projected land-cover changes due to climate and land-use change. For this first b...

2009
Gregory S. Okin Paolo D’Odorico Steven R. Archer

[1] A simplistic model of grass-shrub dynamics was used to investigate the role of grass demographic processes on grassland-shrubland dynamics when grasses are in competitive advantage over shrubs. The model suggests that a feedback between grass biomass and soil erosion may cause an abrupt transition to a shrubland state. The model explains how a simple change in either grass recruitment or gr...

Journal: :journal of biostatistics and epidemiology 0
elham ahmadnezhad assistant professor, national institute for health, tehran university of medical sciences, tehran, iran zhaleh abdi assistant professor, national institute for health, tehran university of medical sciences, tehran, iran farshid fayyaz-jahani school of medicine, urmia university of medical sciences, urmia, iran mahmod suolduozi school of medicine, urmia university of medical sciences, urmia, iran soraya fatholahi school of public health, tehran university of medical sciences, tehran, iran

b a c k g r o u n d  & aim: this study aimed  to estimate  and project  the current  and future disability burden of typhoid fever in iran associated with climate and population to provide best policies for climate change adaptation. methods & materials: years lost due to disabilities (ylds) were measured as burden estimation in this study. the temperature was selected as climate variable. futu...

Journal: :desert 2008
n. baghestani-maybodi m. jankju-borzelabad m. taghi zare

one of the key factors in managing a rangeland is to determine the relative preference of its major plant species by thegrazing livestock. preference value of each plant species is affected by plant type, companion plants, availability byanimals, phenological stage, climate condition, and the livestock species. we investigated the grazing behaviour of anative goat (garizi) in the steppe rangela...

2014
Rebecca L. McCulley Lowell P. Bush Anna E. Carlisle Huihua Ji Jim A. Nelson

Tall fescue pastures cover extensive acreage in the eastern half of the United States and contribute to important ecosystem services, including the provisioning of forage for grazing livestock. Yet little is known concerning how these pastures will respond to climate change. Tall fescue's ability to persist and provide forage under a warmer and wetter environment, as is predicted for much of th...

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