{"id":{"repo_id":"carleton","oai_identifier":"oai:carleton.scholaris.ca:20.500.14718/41771"},"canonical_url":"https://search.dev.ndltd.org/etd/carleton/oai:carleton.scholaris.ca:20.500.14718/41771","repository":{"repo_id":"carleton","name":"Carleton University","base_url":"https://carleton.scholaris.ca/server/oai/request"},"display":{"title":"Bird and Bat Diversity and Abundance in Agroecosystems in Relation to Drainage Hedgerow and Landscape Structure","abstract":"Hedgerows are common semi-natural linear features along agricultural drainages in temperate agroecosystems. Two important variables likely to affect diversity within hedgerows include hedgerow structure and landscape structure. I hypothesized that hedgerows that are taller, wider, and more variable in height, and landscapes with smaller fields and higher forest amount, will support higher diversity within drainage hedgerows by providing more habitat. I used point counts of forest and shrub-edge-associated birds and ultrasonic recordings of bats along drainage hedgerows in eastern Ontario to test my hypotheses. Overall, I found that drainage hedgerow height was positively associated with higher biodiversity for birds and bats. Width and variation in height were also important depending on the response considered. With respect to landscape structure, edge-associated species generally responded positively to smaller field sizes. My results show that structurally complex drainage hedgerows and smaller fields provide valuable habitats for birds and bats in agroecosystems.","abstract_html":"Hedgerows are common semi-natural linear features along agricultural drainages in temperate agroecosystems. Two important variables likely to affect diversity within hedgerows include hedgerow structure and landscape structure. I hypothesized that hedgerows that are taller, wider, and more variable in height, and landscapes with smaller fields and higher forest amount, will support higher diversity within drainage hedgerows by providing more habitat. I used point counts of forest and shrub-edge-associated birds and ultrasonic recordings of bats along drainage hedgerows in eastern Ontario to test my hypotheses. Overall, I found that drainage hedgerow height was positively associated with higher biodiversity for birds and bats. Width and variation in height were also important depending on the response considered. With respect to landscape structure, edge-associated species generally responded positively to smaller field sizes. My results show that structurally complex drainage hedgerows and smaller fields provide valuable habitats for birds and bats in agroecosystems.","abstract_has_math":false,"creators":["Warren, Marlena Ashley"],"institution":"Carleton University","degree_name":"Master of Science (M.Sc.)","degree_level":"Master's","degree_discipline":"Biology","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2024,"date_issued":"2024","date_published":"2024","updated_at":"2026-07-24T01:34:43Z","subjects":[],"languages":["en"],"rights":["Copyright © 2024 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, distribution to students, research and scholarship. Theses may only be shared by linking to the Carleton University Institutional Repository and no part may be copied without proper attribution to the author; no part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner."],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.doi","label":"DOI","values":["10.22215/etd/2024-15925"],"render_values":[{"text":"10.22215/etd/2024-15925","href":"https://doi.org/10.22215/etd/2024-15925","code":true}]}]},"links":{"outbound_url":"https://hdl.handle.net/20.500.14718/41771","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Warren, Marlena Ashley"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2025-04-08T20:25:18Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2025-04-08T20:25:18Z"]},{"key":"dc:date.issued","label":"Date","values":["2024"]},{"key":"dc:publisher","label":"Institution","values":["Carleton University"]},{"key":"dc:type","label":"Dc Type","values":["thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Biology"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Master's"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science (M.Sc.)"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright © 2024 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, distribution to students, research and scholarship. Theses may only be shared by linking to the Carleton University Institutional Repository and no part may be copied without proper attribution to the author; no part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.doi","label":"DOI","values":["10.22215/etd/2024-15925"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/20.500.14718/41771"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Hedgerows are common semi-natural linear features along agricultural drainages in temperate agroecosystems. Two important variables likely to affect diversity within hedgerows include hedgerow structure and landscape structure. I hypothesized that hedgerows that are taller, wider, and more variable in height, and landscapes with smaller fields and higher forest amount, will support higher diversity within drainage hedgerows by providing more habitat. I used point counts of forest and shrub-edge-associated birds and ultrasonic recordings of bats along drainage hedgerows in eastern Ontario to test my hypotheses. Overall, I found that drainage hedgerow height was positively associated with higher biodiversity for birds and bats. Width and variation in height were also important depending on the response considered. With respect to landscape structure, edge-associated species generally responded positively to smaller field sizes. My results show that structurally complex drainage hedgerows and smaller fields provide valuable habitats for birds and bats in agroecosystems."]},{"key":"dc:title","label":"Title","values":["Bird and Bat Diversity and Abundance in Agroecosystems in Relation to Drainage Hedgerow and Landscape Structure"]}]}],"canonical_facts":{"dc:creator":["Warren, Marlena Ashley"],"dc:date.accessioned":["2025-04-08T20:25:18Z"],"dc:date.available":["2025-04-08T20:25:18Z"],"dc:date.issued":["2024"],"dc:description.abstract":["Hedgerows are common semi-natural linear features along agricultural drainages in temperate agroecosystems. Two important variables likely to affect diversity within hedgerows include hedgerow structure and landscape structure. I hypothesized that hedgerows that are taller, wider, and more variable in height, and landscapes with smaller fields and higher forest amount, will support higher diversity within drainage hedgerows by providing more habitat. I used point counts of forest and shrub-edge-associated birds and ultrasonic recordings of bats along drainage hedgerows in eastern Ontario to test my hypotheses. Overall, I found that drainage hedgerow height was positively associated with higher biodiversity for birds and bats. Width and variation in height were also important depending on the response considered. With respect to landscape structure, edge-associated species generally responded positively to smaller field sizes. My results show that structurally complex drainage hedgerows and smaller fields provide valuable habitats for birds and bats in agroecosystems."],"dc:identifier.doi":["10.22215/etd/2024-15925"],"dc:identifier.uri":["https://hdl.handle.net/20.500.14718/41771"],"dc:language.iso":["en"],"dc:publisher":["Carleton University"],"dc:rights":["Copyright © 2024 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, distribution to students, research and scholarship. Theses may only be shared by linking to the Carleton University Institutional Repository and no part may be copied without proper attribution to the author; no part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner."],"dc:title":["Bird and Bat Diversity and Abundance in Agroecosystems in Relation to Drainage Hedgerow and Landscape Structure"],"dc:type":["thesis"],"thesis:degree_discipline":["Biology"],"thesis:degree_level":["Master's"],"thesis:degree_name":["Master of Science (M.Sc.)"]},"updated_at":"2026-07-24T01:34:43Z"}