NDLI: Livestock Trampling Reduces the Conservation Value of Beetle Communities on High Quality Exposed Riverine Sediments

Content Provider	Springer Nature Link
Author	Bates, Adam J. Sadler, Jon P. Fowles, Adrian P.
Copyright Year	2006
Abstract	Exposed riverine sediments (ERS) are habitat for a large number of rare and threatened specialist species of invertebrates and are of considerable conservation importance. Livestock trampling is believed to be one of the most widespread causes of damage to ERS habitats in the UK, and as such, its effects were the focus of this investigation. Beetle density was measured at two points within 25 distinct patches of habitat along ∼ ∼47 km of the Afon Tywi special site of scientific interest in South Wales, which is known to support an extremely good quality ERS beetle fauna in a UK context. Partial canonical correspondence analyses were used to explore the relationship between beetle assemblage and a range of environmental variables. The percentage of fine (<8 mm) sediments, median sediment size, distance downstream, cattle stocking levels, and counts of sheep faeces were found to best relate to beetle abundance and assemblage structure. Species richness was positively associated with stocking levels, probably because of the addition of species associated with resultant elevated levels of silt and organic matter. The ERS quality score, which is a measure of conservation value based on the rarity of specialist ERS beetles, was negatively associated with measures of trampling damage. It was therefore concluded that livestock trampling reduces the conservation value of beetle communities on high quality ERS and management should restrict trampling in sites of high conservation importance.
Starting Page	1491
Ending Page	1509
Page Count	19
File Format	PDF
ISSN	09603115
Journal	Biodiversity and Conservation
Volume Number	16
Issue Number	5
e-ISSN	15729710
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-05-16
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Afon Tywi Carabidae Disturbance Grazing Indicator species Partial canonical correspondence analysis Species diversity Staphylinidae Rarity Riparian Tree Biology Plant Sciences Evolutionary Biology
Content Type	Text
Resource Type	Article
Subject	Ecology Ecology, Evolution, Behavior and Systematics Nature and Landscape Conservation

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