Regional variation in responses of wetland-associated bird communities to conversion of boreal forest to agriculture

Globally and in Canada's boreal forest, extensive deforestation has occurred because of agricultural conversion. However, consequences of forest loss for bird assemblages associated with wetlands and their associated riparian areas and shoreline forests are poorly understood. Using the multivar...

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Autores principales:	Julienne L. Morissette, Erin M. Bayne, Kevin J. Kardynal, Keith A. Hobson
Formato:	article
Lenguaje:	EN
Publicado:	Resilience Alliance 2019
Materias:	agriculture biotic homogenization boreal bird community change forest conversion fragmentation Plant culture SB1-1110 Environmental sciences GE1-350 Plant ecology QK900-989
Acceso en línea:	https://doaj.org/article/e641defe7c204f94be44d55e44c24fe5
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spelling	oai:doaj.org-article:e641defe7c204f94be44d55e44c24fe52021-12-02T11:25:41ZRegional variation in responses of wetland-associated bird communities to conversion of boreal forest to agriculture1712-6568https://doaj.org/article/e641defe7c204f94be44d55e44c24fe52019-06-01T00:00:00Zhttp://www.ace-eco.org/vol14/iss1/art12/https://doaj.org/toc/1712-6568Globally and in Canada's boreal forest, extensive deforestation has occurred because of agricultural conversion. However, consequences of forest loss for bird assemblages associated with wetlands and their associated riparian areas and shoreline forests are poorly understood. Using the multivariate approach, Threshold Indicator Taxa Analysis (TITAN), we assessed the response of bird communities to an agricultural conversion gradient at two spatial scales: (1) locally within 500 m of a wetland, and (2) throughout a 5 × 5 km landscape. We compared results from a study area in Manitoba surrounded by agriculture (DMMB) to those from a landscape where agriculture is encroaching from the southern edge in east-central Alberta (ECAB). Both species-level and community-level changes tended to occur at lower levels of agricultural conversion in DMMB than in ECAB, particularly at the landscape scale. Community-level changes were more gradual and reached a single maximum at the wetland scale, whereas there were two to three distinct community-level change-points at the landscape scale. Species responding positively (15 in ECAB and 18 in DMMB) to agricultural conversion were typical of open-country ecoregions, while species that responded negatively (13 in each of ECAB and DMMB) tended to be those for which loss of forest cover represented direct loss of habitat. For species common to both regions, direction of response (+ or -) was typically consistent, but specific change-points differed. Where conversion of forest to agriculture is unavoidable in boreal forests, limiting the total amount of forest and wetland vegetation loss around wetlands and within the landscape matrix to â¤ 30%, along with wetland preservation, will have the greatest benefit to conserving bird communities typical of boreal wetlands and their adjacent riparian areas and forests.Julienne L. MorissetteErin M. BayneKevin J. KardynalKeith A. HobsonResilience Alliancearticleagriculturebiotic homogenizationboreal birdcommunity changeforest conversionfragmentationPlant cultureSB1-1110Environmental sciencesGE1-350Plant ecologyQK900-989ENAvian Conservation and Ecology, Vol 14, Iss 1, p 12 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	agriculture biotic homogenization boreal bird community change forest conversion fragmentation Plant culture SB1-1110 Environmental sciences GE1-350 Plant ecology QK900-989
spellingShingle	agriculture biotic homogenization boreal bird community change forest conversion fragmentation Plant culture SB1-1110 Environmental sciences GE1-350 Plant ecology QK900-989 Julienne L. Morissette Erin M. Bayne Kevin J. Kardynal Keith A. Hobson Regional variation in responses of wetland-associated bird communities to conversion of boreal forest to agriculture
description	Globally and in Canada's boreal forest, extensive deforestation has occurred because of agricultural conversion. However, consequences of forest loss for bird assemblages associated with wetlands and their associated riparian areas and shoreline forests are poorly understood. Using the multivariate approach, Threshold Indicator Taxa Analysis (TITAN), we assessed the response of bird communities to an agricultural conversion gradient at two spatial scales: (1) locally within 500 m of a wetland, and (2) throughout a 5 × 5 km landscape. We compared results from a study area in Manitoba surrounded by agriculture (DMMB) to those from a landscape where agriculture is encroaching from the southern edge in east-central Alberta (ECAB). Both species-level and community-level changes tended to occur at lower levels of agricultural conversion in DMMB than in ECAB, particularly at the landscape scale. Community-level changes were more gradual and reached a single maximum at the wetland scale, whereas there were two to three distinct community-level change-points at the landscape scale. Species responding positively (15 in ECAB and 18 in DMMB) to agricultural conversion were typical of open-country ecoregions, while species that responded negatively (13 in each of ECAB and DMMB) tended to be those for which loss of forest cover represented direct loss of habitat. For species common to both regions, direction of response (+ or -) was typically consistent, but specific change-points differed. Where conversion of forest to agriculture is unavoidable in boreal forests, limiting the total amount of forest and wetland vegetation loss around wetlands and within the landscape matrix to â¤ 30%, along with wetland preservation, will have the greatest benefit to conserving bird communities typical of boreal wetlands and their adjacent riparian areas and forests.
format	article
author	Julienne L. Morissette Erin M. Bayne Kevin J. Kardynal Keith A. Hobson
author_facet	Julienne L. Morissette Erin M. Bayne Kevin J. Kardynal Keith A. Hobson
author_sort	Julienne L. Morissette
title	Regional variation in responses of wetland-associated bird communities to conversion of boreal forest to agriculture
title_short	Regional variation in responses of wetland-associated bird communities to conversion of boreal forest to agriculture
title_full	Regional variation in responses of wetland-associated bird communities to conversion of boreal forest to agriculture
title_fullStr	Regional variation in responses of wetland-associated bird communities to conversion of boreal forest to agriculture
title_full_unstemmed	Regional variation in responses of wetland-associated bird communities to conversion of boreal forest to agriculture
title_sort	regional variation in responses of wetland-associated bird communities to conversion of boreal forest to agriculture
publisher	Resilience Alliance
publishDate	2019
url	https://doaj.org/article/e641defe7c204f94be44d55e44c24fe5
work_keys_str_mv	AT juliennelmorissette regionalvariationinresponsesofwetlandassociatedbirdcommunitiestoconversionofborealforesttoagriculture AT erinmbayne regionalvariationinresponsesofwetlandassociatedbirdcommunitiestoconversionofborealforesttoagriculture AT kevinjkardynal regionalvariationinresponsesofwetlandassociatedbirdcommunitiestoconversionofborealforesttoagriculture AT keithahobson regionalvariationinresponsesofwetlandassociatedbirdcommunitiestoconversionofborealforesttoagriculture
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Regional variation in responses of wetland-associated bird communities to conversion of boreal forest to agriculture

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