Spatial variability of seabird distribution associated with environmental factors: a case study of marine Important Bird Areas in the Azores
The spatial structure and distribution at sea of Cory’s shearwaters (Calonectris diomedea borealis), common terns (Sterna hirundo), and roseate terns (Sterna dougallii) were analysed in the Azores for various environmental factors: sea surface temperature, chlorophyll a concentration, distance to fr...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.689.8903 2023-05-15T18:27:24+02:00 Spatial variability of seabird distribution associated with environmental factors: a case study of marine Important Bird Areas in the Azores Miguel Figueiredo Miguel Machete Telmo Morato Ana Martins Ricardo Serrão Santos The Pennsylvania State University CiteSeerX Archives 2008 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.689.8903 http://gull-research.org/papers/papers5/101-2009-ICES+Journal+of+Marine+Science_PAmorim_et-al.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.689.8903 http://gull-research.org/papers/papers5/101-2009-ICES+Journal+of+Marine+Science_PAmorim_et-al.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://gull-research.org/papers/papers5/101-2009-ICES+Journal+of+Marine+Science_PAmorim_et-al.pdf Azores geostatistics marine IBAs regression models seabirds spatial statistics text 2008 ftciteseerx 2016-01-08T18:18:28Z The spatial structure and distribution at sea of Cory’s shearwaters (Calonectris diomedea borealis), common terns (Sterna hirundo), and roseate terns (Sterna dougallii) were analysed in the Azores for various environmental factors: sea surface temperature, chlorophyll a concentration, distance to fronts, wind, distance to island shore or tern colonies, distance to seamounts, seabed slope, and depth. Data on seabird sightings were collected by observers on board fishing vessels, 2002–2006. Generalized linear modelling (GLM) explained 43 and 11 % of the abundance variability for terns (both species pooled) and Cory’s shearwaters, respectively. Variability in seabird abun-dance was mainly explained by month, wind, distance to shore and/or tern colonies, and distance to seamounts. Variogram modelling indicated that species distribution presented a small-scale spatial structure (i.e. low autocorrelation). Cory’s shearwater predictive dis-tribution maps showed widespread distribution patterns of abundance, despite occurring at a greater intensity around the islands and around some seamounts, which are areas of fishery interest. Conversely, terns were essentially concentrated near the shore. The estab-lishment of marine important bird areas should be encouraged close to seabird colonies and around some seamount areas. Text Sterna hirundo Unknown |
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Open Polar |
collection |
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ftciteseerx |
language |
English |
topic |
Azores geostatistics marine IBAs regression models seabirds spatial statistics |
spellingShingle |
Azores geostatistics marine IBAs regression models seabirds spatial statistics Miguel Figueiredo Miguel Machete Telmo Morato Ana Martins Ricardo Serrão Santos Spatial variability of seabird distribution associated with environmental factors: a case study of marine Important Bird Areas in the Azores |
topic_facet |
Azores geostatistics marine IBAs regression models seabirds spatial statistics |
description |
The spatial structure and distribution at sea of Cory’s shearwaters (Calonectris diomedea borealis), common terns (Sterna hirundo), and roseate terns (Sterna dougallii) were analysed in the Azores for various environmental factors: sea surface temperature, chlorophyll a concentration, distance to fronts, wind, distance to island shore or tern colonies, distance to seamounts, seabed slope, and depth. Data on seabird sightings were collected by observers on board fishing vessels, 2002–2006. Generalized linear modelling (GLM) explained 43 and 11 % of the abundance variability for terns (both species pooled) and Cory’s shearwaters, respectively. Variability in seabird abun-dance was mainly explained by month, wind, distance to shore and/or tern colonies, and distance to seamounts. Variogram modelling indicated that species distribution presented a small-scale spatial structure (i.e. low autocorrelation). Cory’s shearwater predictive dis-tribution maps showed widespread distribution patterns of abundance, despite occurring at a greater intensity around the islands and around some seamounts, which are areas of fishery interest. Conversely, terns were essentially concentrated near the shore. The estab-lishment of marine important bird areas should be encouraged close to seabird colonies and around some seamount areas. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Miguel Figueiredo Miguel Machete Telmo Morato Ana Martins Ricardo Serrão Santos |
author_facet |
Miguel Figueiredo Miguel Machete Telmo Morato Ana Martins Ricardo Serrão Santos |
author_sort |
Miguel Figueiredo |
title |
Spatial variability of seabird distribution associated with environmental factors: a case study of marine Important Bird Areas in the Azores |
title_short |
Spatial variability of seabird distribution associated with environmental factors: a case study of marine Important Bird Areas in the Azores |
title_full |
Spatial variability of seabird distribution associated with environmental factors: a case study of marine Important Bird Areas in the Azores |
title_fullStr |
Spatial variability of seabird distribution associated with environmental factors: a case study of marine Important Bird Areas in the Azores |
title_full_unstemmed |
Spatial variability of seabird distribution associated with environmental factors: a case study of marine Important Bird Areas in the Azores |
title_sort |
spatial variability of seabird distribution associated with environmental factors: a case study of marine important bird areas in the azores |
publishDate |
2008 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.689.8903 http://gull-research.org/papers/papers5/101-2009-ICES+Journal+of+Marine+Science_PAmorim_et-al.pdf |
genre |
Sterna hirundo |
genre_facet |
Sterna hirundo |
op_source |
http://gull-research.org/papers/papers5/101-2009-ICES+Journal+of+Marine+Science_PAmorim_et-al.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.689.8903 http://gull-research.org/papers/papers5/101-2009-ICES+Journal+of+Marine+Science_PAmorim_et-al.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766209485839269888 |