birds on land: A review of plant biomass, species richness, and community composition in seabird colonies
Abstract Seabirds are chemical and physical engineers that are capable of transforming terrestrial vegetation by altering edaphic conditions, generating physical disturbance, and affecting seed dispersal. Substantial changes in seabird populations are occurring worldwide and are likely to have impor...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1078.6037 2023-05-15T13:31:06+02:00 birds on land: A review of plant biomass, species richness, and community composition in seabird colonies Julie C Ellis The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1078.6037 http://www.avesmarinhas.com.br/5%20-%20Marine%20birds%20on%20land%20%20a%20review%20of%20plant%20biomass,%20species%20richness,.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1078.6037 http://www.avesmarinhas.com.br/5%20-%20Marine%20birds%20on%20land%20%20a%20review%20of%20plant%20biomass,%20species%20richness,.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.avesmarinhas.com.br/5%20-%20Marine%20birds%20on%20land%20%20a%20review%20of%20plant%20biomass,%20species%20richness,.pdf text ftciteseerx 2020-05-03T00:18:44Z Abstract Seabirds are chemical and physical engineers that are capable of transforming terrestrial vegetation by altering edaphic conditions, generating physical disturbance, and affecting seed dispersal. Substantial changes in seabird populations are occurring worldwide and are likely to have important consequences for plant community composition on islands and coastal areas. This review focuses on the impact of seabirds on plant biomass, species richness and community composition. A total of 57 publications (42 studies) were selected for review. Of the 42 studies represented in the publications, 55% were descriptive. Most studies took place in Australia, New Zealand, the British Isles, Japan, North America, and sub-Antarctic islands. A few studies showed that aboveground plant biomass in seabird colonies increased with sufficient rainfall and moderate temperatures. The majority of studies on plant species richness showed a decrease in seabird colonies compared to areas unaffected by birds. However, species richness was higher in areas of intermediate seabird disturbance, compared to undisturbed areas. Moreover, the effects of seabirds on species richness varied with respect to island size. Most studies of plant community composition indicated that annuals, 'ruderals'', and cosmopolitan species increased in abundance in seabird colonies. Changes in plant communities in seabird colonies appear to result mainly from altered soil nutrient concentrations and pH, increased physical disturbance, and seed dispersal by seabirds and humans. However, few studies have rigorously studied the relative importance of these alterations. Both the direction and magnitude of seabird effects are modified by: (1) density of birds, (2) temperature and precipitation, and (3) proximity to human habitation. A reduction in seabird populations is likely to have negative consequences for native plant species that rely on seabird disturbance for their persistence. However, seed dispersal by nesting seabirds, especially gulls, frequently ... Text Antarc* Antarctic Unknown Antarctic New Zealand |
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Abstract Seabirds are chemical and physical engineers that are capable of transforming terrestrial vegetation by altering edaphic conditions, generating physical disturbance, and affecting seed dispersal. Substantial changes in seabird populations are occurring worldwide and are likely to have important consequences for plant community composition on islands and coastal areas. This review focuses on the impact of seabirds on plant biomass, species richness and community composition. A total of 57 publications (42 studies) were selected for review. Of the 42 studies represented in the publications, 55% were descriptive. Most studies took place in Australia, New Zealand, the British Isles, Japan, North America, and sub-Antarctic islands. A few studies showed that aboveground plant biomass in seabird colonies increased with sufficient rainfall and moderate temperatures. The majority of studies on plant species richness showed a decrease in seabird colonies compared to areas unaffected by birds. However, species richness was higher in areas of intermediate seabird disturbance, compared to undisturbed areas. Moreover, the effects of seabirds on species richness varied with respect to island size. Most studies of plant community composition indicated that annuals, 'ruderals'', and cosmopolitan species increased in abundance in seabird colonies. Changes in plant communities in seabird colonies appear to result mainly from altered soil nutrient concentrations and pH, increased physical disturbance, and seed dispersal by seabirds and humans. However, few studies have rigorously studied the relative importance of these alterations. Both the direction and magnitude of seabird effects are modified by: (1) density of birds, (2) temperature and precipitation, and (3) proximity to human habitation. A reduction in seabird populations is likely to have negative consequences for native plant species that rely on seabird disturbance for their persistence. However, seed dispersal by nesting seabirds, especially gulls, frequently ... |
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The Pennsylvania State University CiteSeerX Archives |
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Text |
author |
Julie C Ellis |
spellingShingle |
Julie C Ellis birds on land: A review of plant biomass, species richness, and community composition in seabird colonies |
author_facet |
Julie C Ellis |
author_sort |
Julie C Ellis |
title |
birds on land: A review of plant biomass, species richness, and community composition in seabird colonies |
title_short |
birds on land: A review of plant biomass, species richness, and community composition in seabird colonies |
title_full |
birds on land: A review of plant biomass, species richness, and community composition in seabird colonies |
title_fullStr |
birds on land: A review of plant biomass, species richness, and community composition in seabird colonies |
title_full_unstemmed |
birds on land: A review of plant biomass, species richness, and community composition in seabird colonies |
title_sort |
birds on land: a review of plant biomass, species richness, and community composition in seabird colonies |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1078.6037 http://www.avesmarinhas.com.br/5%20-%20Marine%20birds%20on%20land%20%20a%20review%20of%20plant%20biomass,%20species%20richness,.pdf |
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Antarctic New Zealand |
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Antarctic New Zealand |
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Antarc* Antarctic |
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Antarc* Antarctic |
op_source |
http://www.avesmarinhas.com.br/5%20-%20Marine%20birds%20on%20land%20%20a%20review%20of%20plant%20biomass,%20species%20richness,.pdf |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1078.6037 http://www.avesmarinhas.com.br/5%20-%20Marine%20birds%20on%20land%20%20a%20review%20of%20plant%20biomass,%20species%20richness,.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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