Spatial structure on moderately exposed rocky shores:patch scales and the interactions between limpets and algae
The spatial pattern of limpet grazing has been previously hypothesised to drive a mosaic of algal patches on moderately exposed shores in the northeast Atlantic. The presence of differently aged algal patches and spatial effects associated with limpets were tested for using spatially referenced data...
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ftuhipublicatio:oai:pure.atira.dk:publications/8c30abf2-3734-4519-859a-a23abae151b8 2024-02-04T10:03:09+01:00 Spatial structure on moderately exposed rocky shores:patch scales and the interactions between limpets and algae Johnson, M P Burrows, Michael Hartnoll, R G Hawkins, S J 1997 https://pure.uhi.ac.uk/en/publications/8c30abf2-3734-4519-859a-a23abae151b8 eng eng info:eu-repo/semantics/restrictedAccess Johnson , M P , Burrows , M , Hartnoll , R G & Hawkins , S J 1997 , ' Spatial structure on moderately exposed rocky shores : patch scales and the interactions between limpets and algae ' , MAR ECOL-PROG SER , no. 0 , pp. 209-215 . Ecology PATTERN INVERTEBRATES Marine & Freshwater Biology BARNACLES Oceanography RECRUITMENT article 1997 ftuhipublicatio 2024-01-11T23:20:47Z The spatial pattern of limpet grazing has been previously hypothesised to drive a mosaic of algal patches on moderately exposed shores in the northeast Atlantic. The presence of differently aged algal patches and spatial effects associated with limpets were tested for using spatially referenced data sets. Algal and limper occurrences in 0.01 m(2) cells were recorded in a series of 25 m(2) quadrats on shores on the Isle of Man. All sites showed small-scale spatial autocorrelation for Limpets and mature and juvenile algae. Hence the sites surveyed had an uneven distribution of Limpets superimposed on a mosaic of differently aged patches of algae. The local density of Limpets was related to the probability of a cell containing juvenile algae in 7 of the 10 quadrats surveyed. Where they had an effect, limpets generally reduced the probability of juvenile algae being recorded locally, as would be predicted by the grazer-driven mosaic hypothesis. Article in Journal/Newspaper Northeast Atlantic University of the Highlands and Islands: Research Database of UHI |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
Ecology PATTERN INVERTEBRATES Marine & Freshwater Biology BARNACLES Oceanography RECRUITMENT |
spellingShingle |
Ecology PATTERN INVERTEBRATES Marine & Freshwater Biology BARNACLES Oceanography RECRUITMENT Johnson, M P Burrows, Michael Hartnoll, R G Hawkins, S J Spatial structure on moderately exposed rocky shores:patch scales and the interactions between limpets and algae |
topic_facet |
Ecology PATTERN INVERTEBRATES Marine & Freshwater Biology BARNACLES Oceanography RECRUITMENT |
description |
The spatial pattern of limpet grazing has been previously hypothesised to drive a mosaic of algal patches on moderately exposed shores in the northeast Atlantic. The presence of differently aged algal patches and spatial effects associated with limpets were tested for using spatially referenced data sets. Algal and limper occurrences in 0.01 m(2) cells were recorded in a series of 25 m(2) quadrats on shores on the Isle of Man. All sites showed small-scale spatial autocorrelation for Limpets and mature and juvenile algae. Hence the sites surveyed had an uneven distribution of Limpets superimposed on a mosaic of differently aged patches of algae. The local density of Limpets was related to the probability of a cell containing juvenile algae in 7 of the 10 quadrats surveyed. Where they had an effect, limpets generally reduced the probability of juvenile algae being recorded locally, as would be predicted by the grazer-driven mosaic hypothesis. |
format |
Article in Journal/Newspaper |
author |
Johnson, M P Burrows, Michael Hartnoll, R G Hawkins, S J |
author_facet |
Johnson, M P Burrows, Michael Hartnoll, R G Hawkins, S J |
author_sort |
Johnson, M P |
title |
Spatial structure on moderately exposed rocky shores:patch scales and the interactions between limpets and algae |
title_short |
Spatial structure on moderately exposed rocky shores:patch scales and the interactions between limpets and algae |
title_full |
Spatial structure on moderately exposed rocky shores:patch scales and the interactions between limpets and algae |
title_fullStr |
Spatial structure on moderately exposed rocky shores:patch scales and the interactions between limpets and algae |
title_full_unstemmed |
Spatial structure on moderately exposed rocky shores:patch scales and the interactions between limpets and algae |
title_sort |
spatial structure on moderately exposed rocky shores:patch scales and the interactions between limpets and algae |
publishDate |
1997 |
url |
https://pure.uhi.ac.uk/en/publications/8c30abf2-3734-4519-859a-a23abae151b8 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
Johnson , M P , Burrows , M , Hartnoll , R G & Hawkins , S J 1997 , ' Spatial structure on moderately exposed rocky shores : patch scales and the interactions between limpets and algae ' , MAR ECOL-PROG SER , no. 0 , pp. 209-215 . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1789970376656158720 |