The feeding ecology and foraging behaviour of sanderling calidris alba and turnstone arenaria interpres at Teesmouth N. E. England
The distributions of Sanderling and Turnstone were determined for the south side of the Tees Estuary. Location of roosting sites and the movement of the tide were the major factors affecting movement patterns of these two species. The invertebrate species Nerine, Bathyporeia and Eurydice, were obser...
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ftunidurhamethes:oai:etheses.dur.ac.uk:8003 2023-05-15T15:23:19+02:00 The feeding ecology and foraging behaviour of sanderling calidris alba and turnstone arenaria interpres at Teesmouth N. E. England Brearey, David Michael 1982 application/pdf http://etheses.dur.ac.uk/8003/ http://etheses.dur.ac.uk/8003/1/8003_5001.PDF unknown oai:etheses.dur.ac.uk:8003 http://etheses.dur.ac.uk/8003/1/8003_5001.PDF Brearey, David Michael (1982) The feeding ecology and foraging behaviour of sanderling calidris alba and turnstone arenaria interpres at Teesmouth N. E. England. Doctoral thesis, Durham University. http://etheses.dur.ac.uk/8003/ Thesis NonPeerReviewed 1982 ftunidurhamethes 2022-09-23T14:14:56Z The distributions of Sanderling and Turnstone were determined for the south side of the Tees Estuary. Location of roosting sites and the movement of the tide were the major factors affecting movement patterns of these two species. The invertebrate species Nerine, Bathyporeia and Eurydice, were observed to comprise virtually all of the Sanderling's open-beach diet. Extensive sampling of these three prey species showed a predictable occurrence along the beach with each species; most common at particular transect and distance below the High Water Mark, (e.g. Nerine was most abundant at 50 to 90 metres below the HWM). The times when these bands became available to 'foraging Sanderling helped to determine the movement patterns of the birds. Detailed studies of the feeding behaviour of Sanderling showed three main foraging techniques: probe feeding, water-column feeding and stitch feeding. The first two of these techniques have a visual component, (the Pause position). Switching occurred between these two techniques but was uncommon between the water column and stitch technique (which was a tactile feeding method). When feeding, Sanderling oriented themselves so that they could watch the progress of the waves. Colour-marked individuals of both Sanderling and Turnstone helped to determine movement, patterns, fidelity to site within a season and survival and fidelity between seasons. Mortality rates for Turnstone were especially low; fidelity was high for both species. Feeding observations on winter Turnstone showed both dispersed and concentrated situations. While aggression was seldom observed for Sanderling, it was common for Turnstone. Two main types of aggressive encounters were observed for the Turnstone and were determined mainly by the potential payoff of the encounter. The suggestion is advanced that aggressive patterns may help determine the dispersion of the Turnstone. Aggression may also help to determine the feeding location of the juveniles. Observations of breeding Turnstone (Finland) present, a picture ... Thesis Arenaria interpres Calidris alba Sanderling Durham University: Durham e-Theses |
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Durham University: Durham e-Theses |
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The distributions of Sanderling and Turnstone were determined for the south side of the Tees Estuary. Location of roosting sites and the movement of the tide were the major factors affecting movement patterns of these two species. The invertebrate species Nerine, Bathyporeia and Eurydice, were observed to comprise virtually all of the Sanderling's open-beach diet. Extensive sampling of these three prey species showed a predictable occurrence along the beach with each species; most common at particular transect and distance below the High Water Mark, (e.g. Nerine was most abundant at 50 to 90 metres below the HWM). The times when these bands became available to 'foraging Sanderling helped to determine the movement patterns of the birds. Detailed studies of the feeding behaviour of Sanderling showed three main foraging techniques: probe feeding, water-column feeding and stitch feeding. The first two of these techniques have a visual component, (the Pause position). Switching occurred between these two techniques but was uncommon between the water column and stitch technique (which was a tactile feeding method). When feeding, Sanderling oriented themselves so that they could watch the progress of the waves. Colour-marked individuals of both Sanderling and Turnstone helped to determine movement, patterns, fidelity to site within a season and survival and fidelity between seasons. Mortality rates for Turnstone were especially low; fidelity was high for both species. Feeding observations on winter Turnstone showed both dispersed and concentrated situations. While aggression was seldom observed for Sanderling, it was common for Turnstone. Two main types of aggressive encounters were observed for the Turnstone and were determined mainly by the potential payoff of the encounter. The suggestion is advanced that aggressive patterns may help determine the dispersion of the Turnstone. Aggression may also help to determine the feeding location of the juveniles. Observations of breeding Turnstone (Finland) present, a picture ... |
format |
Thesis |
author |
Brearey, David Michael |
spellingShingle |
Brearey, David Michael The feeding ecology and foraging behaviour of sanderling calidris alba and turnstone arenaria interpres at Teesmouth N. E. England |
author_facet |
Brearey, David Michael |
author_sort |
Brearey, David Michael |
title |
The feeding ecology and foraging behaviour of sanderling calidris alba and turnstone arenaria interpres at Teesmouth N. E. England |
title_short |
The feeding ecology and foraging behaviour of sanderling calidris alba and turnstone arenaria interpres at Teesmouth N. E. England |
title_full |
The feeding ecology and foraging behaviour of sanderling calidris alba and turnstone arenaria interpres at Teesmouth N. E. England |
title_fullStr |
The feeding ecology and foraging behaviour of sanderling calidris alba and turnstone arenaria interpres at Teesmouth N. E. England |
title_full_unstemmed |
The feeding ecology and foraging behaviour of sanderling calidris alba and turnstone arenaria interpres at Teesmouth N. E. England |
title_sort |
feeding ecology and foraging behaviour of sanderling calidris alba and turnstone arenaria interpres at teesmouth n. e. england |
publishDate |
1982 |
url |
http://etheses.dur.ac.uk/8003/ http://etheses.dur.ac.uk/8003/1/8003_5001.PDF |
genre |
Arenaria interpres Calidris alba Sanderling |
genre_facet |
Arenaria interpres Calidris alba Sanderling |
op_relation |
oai:etheses.dur.ac.uk:8003 http://etheses.dur.ac.uk/8003/1/8003_5001.PDF Brearey, David Michael (1982) The feeding ecology and foraging behaviour of sanderling calidris alba and turnstone arenaria interpres at Teesmouth N. E. England. Doctoral thesis, Durham University. http://etheses.dur.ac.uk/8003/ |
_version_ |
1766354024925233152 |