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|a (DE-627)JST066867363
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|a (JST)20146697
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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1 |
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|a Hendricks, H. H.
|e verfasserin
|4 aut
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|a Plant Species Richness and Composition a Long Livestock Grazing Intensity Gradients in a Namaqualand (South Africa) Protected Area
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|c 2005
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|a Text
|b txt
|2 rdacontent
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|a Computermedien
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|2 rdamedia
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|a Online-Ressource
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|a The study described changes in floristic and vegetation structure in relation to livestock grazing intensity in a conservation area in the Succulent Karoo, South Africa. Grazing by goats and sheep is allowed in the Richtersveld National Park (a contractual National Park) which is also an area of high floristic richness and endemism. We used goat faecal pellet density, degree of trampling and percentage bare-ground at distances from the stock posts as surrogates for a gradient in grazing pressure. A stock post is the place where farmers keep, in most cases in an enclosure called a 'kraal', their animals at night and to which they return every evening after the day's herding. Twenty-seven stock posts were located in the Richtersveld National Park; nine stock posts on flats, footslopes and mountain each. We measured plant species richness and diversity, and mean percentage cover of the various plant growth forms (including the number of species falling into each growth form category) in each of the five 10 m × 10 m plots (each 200 m apart) demarcated along a transect of one kilometre length from the centre of each stock post. The results showed that distance from the stock post does reflect grazing intensity use because densities in faecal pellets rapidly declined with increasing distances away from the stock post for all habitats studied. Faecal density was positively correlated with stocking density. Plant species richness and diversity was at a minimum near stock posts. Plants able to endure the effects of heavy grazing occurred near stock posts where declines in palatable plant species, assumingly sensitive to heavy grazing and trampling, were recorded. Grazing increased vegetation patchiness up to 800 m from the stock post for all the habitats. The degree to which this change in species composition occurred did not depend on stocking densities, suggesting that both grazing and landscape variability were responsible for vegetation changes in rangelands of that area of the Succulent Karoo biome.
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|a Copyright 2005 Springer
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|a Grazing impacts
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|a Growth form
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|a Herbivory
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|a Stock post
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|a Succulent Karoo
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|a Biological sciences
|x Biology
|x Botany
|x Plants
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4 |
|a Biological sciences
|x Agriculture
|x Agricultural sciences
|x Animal science
|x Animal nutrition
|x Forage and feed science
|x Grazing management
|x Grazing intensity
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650 |
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4 |
|a Biological sciences
|x Agriculture
|x Agricultural sciences
|x Animal science
|x Animal nutrition
|x Animal feeding methods
|x Grazing
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650 |
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4 |
|a Biological sciences
|x Biology
|x Botany
|x Plant ecology
|x Vegetation
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650 |
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|a Physical sciences
|x Earth sciences
|x Geography
|x Geomorphology
|x Topography
|x Lowlands
|x Plains
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650 |
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4 |
|a Biological sciences
|x Ecology
|x Population ecology
|x Synecology
|x Habitats
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4 |
|a Biological sciences
|x Biology
|x Botany
|x Plants
|x Succulent plants
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650 |
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4 |
|a Physical sciences
|x Earth sciences
|x Geography
|x Land
|x Rangelands
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650 |
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4 |
|a Biological sciences
|x Biology
|x Biological taxonomies
|x Species
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650 |
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4 |
|a Biological sciences
|x Biology
|x Zoology
|x Animals
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|a research-article
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700 |
1 |
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|a Bond, W. J.
|e verfasserin
|4 aut
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1 |
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|a Midgley, J. J.
|e verfasserin
|4 aut
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700 |
1 |
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|a A., Novellie P.
|e verfasserin
|4 aut
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700 |
1 |
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|a Ovellie, P. A.
|e verfasserin
|4 aut
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773 |
0 |
8 |
|i Enthalten in
|t Plant Ecology
|d Springer Science + Business Media
|g 176(2005), 1, Seite 19-33
|w (DE-627)271177578
|w (DE-600)1479167-5
|x 15735052
|7 nnns
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773 |
1 |
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|g volume:176
|g year:2005
|g number:1
|g pages:19-33
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|u https://www.jstor.org/stable/20146697
|3 Volltext
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|d 176
|j 2005
|e 1
|h 19-33
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