نتایج جستجو برای: livestock trampling

تعداد نتایج: 22539  

2017
Freek S. Mandema Jan P. Bakker

The purpose of this study is to experimentally determine the differences between four grazing treatments on the trampling of nests. Additionally, we examine to what extent the trampling probability of nests is higher close to a source of fresh water. We compare the trampling of artificial nests in five different grazing treatments in an experimental design. We use buried clay pigeon targets as ...

2017
Elwyn Sharps Jennifer Smart Lucy R Mason Kate Jones Martin W Skov Angus Garbutt Jan G Hiddink

Conservation grazing for breeding birds needs to balance the positive effects on vegetation structure and negative effects of nest trampling. In the UK, populations of Common redshank Tringa totanus breeding on saltmarshes declined by >50% between 1985 and 2011. These declines have been linked to changes in grazing management. The highest breeding densities of redshank on saltmarshes are found ...

Journal: :journal of rangeland science 2012
t. h. jaweed p. g. saptarshi s. w. gaikwad

the superficial strata of ground have been perennially exposed to the action of natural agents such as heat, cold and water. however, grazing agent was not different from them when soils were investigated from temperate rangelands of kashmir and caused the soil compaction, soil structure degradation and loss of soil organic c and c/n ratio. soils from three grazing intensities were investigated...

Journal: :journal of rangeland science 2010
h. azarnivand a. farajollahi e. bandak h. pouzesh

soil physical properties have an important role on vegetation growththrough affecting the development of root system. the aim of this study was toinvestigate the trampling effect of livestock grazing on soil physical properties andvegetation cover changes. the experiment was conducted on three range conditionsites (reference, key and critical area) with ten frequencies in hosseinabadekudistan i...

Journal: :Frontiers in Environmental Science 2023

Precipitation change and grazing are the main factors influencing vegetation structure dynamics in semi-arid grassland. However, effects of precipitation variation livestock trampling on seedling emergence patterns plants remain largely unknown. In this study, an experiment with four gradients (no-trampling, light, moderate, heavy) three treatments (ambient precipitation, +30% −30% precipitatio...

A. Farajollahi E. Bandak H. Azarnivand H. Pouzesh

Soil physical properties have an important role on vegetation growththrough affecting the development of root system. The aim of this study was toinvestigate the trampling effect of livestock grazing on soil physical properties andvegetation cover changes. The experiment was conducted on three range conditionsites (Reference, Key and Critical area) with ten frequencies in HosseinabadeKudistan i...

2015
Julius Tjelele David Ward Luthando Dziba

The increasing rate of woody plant encroachment in grasslands or savannas remains a challenge to livestock farmers. The causes and control measures of woody plant encroachment are of common interest, especially where it negatively affects the objectives of an agricultural enterprise. The objectives of this study were to determine the effects of gut passage (goats, cattle), dung (nutrients), fir...

2008
Dirk H. Van Vuren Michael L. Johnson Lizabeth Bowen

We assessed the effects of overgrazing by feral sheep on watersheds on Santa Cruz Island, California. Overgrazing had a marked effect on stream flow; flows were much greater in overgrazed than in lightly grazed watersheds early in the rainy season, but the difference vanished later in the season. This pattern can be explained by reduced infiltration and increased surface runoff of rainfall in o...

Journal: :Annals of botany 2012
Liang Xu Fei-Hai Yu Elles van Drunen Feike Schieving Ming Dong Niels P R Anten

BACKGROUND AND AIMS Grazing is a complex process involving the simultaneous occurrence of both trampling and defoliation. Clonal plants are a common feature of heavily grazed ecosystems where large herbivores inflict the simultaneous pressures of trampling and defoliation on the vegetation. We test the hypothesis that physiological integration (resource sharing between interconnected ramets) ma...

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