نتایج جستجو برای: livestock ecosystem

تعداد نتایج: 104389  

2009
Grant Harris Simon Thirgood Grant C. Hopcraft Joris P. G. M. Cromsigt Joel Berger

Knowledge of mammal migrations is low, and human impacts on migrations high. This jeopardizes efforts to conserve terrestrial migrations. To aid the conservation of these migrations, we synthesized information worldwide, describing 24 large-bodied ungulates that migrate in aggregations. This synthesis includes maps of extinct and extant migrations, numbers of migrants, summaries of ecological d...

Journal: :Environment international 2015
Kristian K Brandt Alejandro Amézquita Thomas Backhaus Alistair Boxall Anja Coors Thomas Heberer John R Lawrence James Lazorchak Jens Schönfeld Jason R Snape Yong-Guan Zhu Edward Topp

Antibiotics play a pivotal role in the management of infectious disease in humans, companion animals, livestock, and aquaculture operations at a global scale. Antibiotics are produced, consumed, and released into the environment at an unprecedented scale causing concern that the presence of antibiotic residues may adversely impact aquatic and terrestrial ecosystems. Here we critically review th...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Jennifer C Birch Adrian C Newton Claudia Alvarez Aquino Elena Cantarello Cristian Echeverría Thomas Kitzberger Ignacio Schiappacasse Natalia Tejedor Garavito

Although ecological restoration is widely used to combat environmental degradation, very few studies have evaluated the cost-effectiveness of this approach. We examine the potential impact of forest restoration on the value of multiple ecosystem services across four dryland areas in Latin America, by estimating the net value of ecosystem service benefits under different reforestation scenarios....

2017
Marius Gilbert Xiangming Xiao Timothy P Robinson

Several kinds of pressure can lead to the emergence of infectious diseases. In the case of zoonoses emerging from livestock, one of the most significant changes that has taken place since the mid twentieth century is what has been termed the "livestock revolution", whereby the stock of food animals, their productivity and their trade has increased rapidly to feed rising and increasingly wealthy...

2013
Matthew A. Bowker David J. Eldridge James Val

Water redistribution has a profound influence on dryland ecosystem function. This hydrological function is largely regulated by ecosystem engineers including biological soil crusts (biocrusts) which produce run-off, and burrowing animals, such as the greater bilby, whose pits capture water. We estimated the relative importance of these two ecosystem engineers in determining infiltration rates i...

2007
K. J. Soder A. J. Rook M. A. Sanderson

The importance of plant species diversity on performance of livestock grazing temperate region pastures is summarized in this review. As livestock producers seek less capital-intensive production systems, emphasis is redirected toward low-input pasture systems that rely on complex species mixtures to produce forage. Increased plant species diversity has been linked to improvements in ecosystem ...

2017
Madhu Chetri Morten Odden Per Wegge

Top carnivores play an important role in maintaining energy flow and functioning of the ecosystem, and a clear understanding of their diets and foraging strategies is essential for developing effective conservation strategies. In this paper, we compared diets and prey selection of snow leopards and wolves based on analyses of genotyped scats (snow leopards n = 182, wolves n = 57), collected wit...

2015
Richard B. Harris Wang Wenying Badinqiuying Andrew T. Smith Donald J. Bedunah Shiping Wang

Rangeland degradation has been identified as a serious concern in alpine regions of western China on the Qinghai-Tibetan plateau (QTP). Numerous government-sponsored programs have been initiated, including many that feature long-term grazing prohibitions and some that call for eliminating pastoralism altogether. As well, government programs have long favored eliminating plateau pikas (Ochotona ...

2014
Hannah Rose Bryanne Hoar Susan J. Kutz Eric R. Morgan

Global change, including climate, policy, land use and other associated environmental changes, is likely to have a major impact on parasitic disease in wildlife, altering the spatio-temporal patterns of transmission, with wide-ranging implications for wildlife, domestic animals, humans and ecosystem health. Predicting the potential impact of climate change on parasites infecting wildlife will b...

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