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Gravhøje som øer i agerlandet: Forandringer i floraen 1961 til 2000

Nielsen, Heidi B. and Bruun, Hans Henrik LU (2003) In Flora og Fauna 109(3-4). p.95-100
Abstract
A published investigation in 1961 of the vegetation on 10 burial mounds in southern Zealand was repeated in 2000. The burial mounds were situated as islands in the intensively used arable landscape. It is likely that such small fragments receive great inputs of Nitrogen by wet deposition and spill-over of artificial fertiliser from the surrounding fields. It was hypothesised that burial mounds in close contact with arable farming should show early signs of effects upon vegetation of eutrophication, and potentially warn of long-term changes in more coherent habitat areas of similar kind. We analysed the data by Detrended Correspondence Analysis (DCA), and compared the sample scores from the two surveys by pairwise t-tests. The DCA-axes were... (More)
A published investigation in 1961 of the vegetation on 10 burial mounds in southern Zealand was repeated in 2000. The burial mounds were situated as islands in the intensively used arable landscape. It is likely that such small fragments receive great inputs of Nitrogen by wet deposition and spill-over of artificial fertiliser from the surrounding fields. It was hypothesised that burial mounds in close contact with arable farming should show early signs of effects upon vegetation of eutrophication, and potentially warn of long-term changes in more coherent habitat areas of similar kind. We analysed the data by Detrended Correspondence Analysis (DCA), and compared the sample scores from the two surveys by pairwise t-tests. The DCA-axes were interpreted in terms of measured and calibrated environmental parameters, soil

pH, soil type, cover of woody plants, and calibrated Ellenberg N-value. It was found that a significant change in the species composition had taken place. Nitrophilic and shade-tolerant species had increased significantly. Common species typical of dry grassland and heathland had decreased in abundance, and rarer species had disappeared altogether. The vegetation changes are discussed in terms of changed agricultural land-use and ceased grazing. (Less)
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author
organization
alternative title
Grassland fragments on Bronze Age burial mounds in the arable landscape: vegetation change 1961-2000
publishing date
type
Contribution to specialist publication or newspaper
publication status
published
subject
keywords
burning, Burial mound, eutrophication, grassland, heathland, land-use change
categories
Popular Science
in
Flora og Fauna
volume
109
issue
3-4
pages
95 - 100
publisher
Naturhistorisk Forening for Jylland
ISSN
0015-3818
language
Danish
LU publication?
yes
id
82d0e575-d492-4a1b-8168-13d315172fa7 (old id 715919)
date added to LUP
2007-12-10 13:46:19
date last changed
2016-04-16 03:59:41
@misc{82d0e575-d492-4a1b-8168-13d315172fa7,
  abstract     = {A published investigation in 1961 of the vegetation on 10 burial mounds in southern Zealand was repeated in 2000. The burial mounds were situated as islands in the intensively used arable landscape. It is likely that such small fragments receive great inputs of Nitrogen by wet deposition and spill-over of artificial fertiliser from the surrounding fields. It was hypothesised that burial mounds in close contact with arable farming should show early signs of effects upon vegetation of eutrophication, and potentially warn of long-term changes in more coherent habitat areas of similar kind. We analysed the data by Detrended Correspondence Analysis (DCA), and compared the sample scores from the two surveys by pairwise t-tests. The DCA-axes were interpreted in terms of measured and calibrated environmental parameters, soil<br/><br>
pH, soil type, cover of woody plants, and calibrated Ellenberg N-value. It was found that a significant change in the species composition had taken place. Nitrophilic and shade-tolerant species had increased significantly. Common species typical of dry grassland and heathland had decreased in abundance, and rarer species had disappeared altogether. The vegetation changes are discussed in terms of changed agricultural land-use and ceased grazing.},
  author       = {Nielsen, Heidi B. and Bruun, Hans Henrik},
  issn         = {0015-3818},
  keyword      = {burning,Burial mound,eutrophication,grassland,heathland,land-use change},
  language     = {dan},
  number       = {3-4},
  pages        = {95--100},
  publisher    = {Naturhistorisk Forening for Jylland},
  series       = {Flora og Fauna},
  title        = {Gravhøje som øer i agerlandet: Forandringer i floraen 1961 til 2000},
  volume       = {109},
  year         = {2003},
}