Patch and landscape responses of bird abundance to fragmentation in agroecosystems of east-central Argentina = Abondance d'oiseaux dans les îlots et les paysages à la suite de la fragmentation dans des agrosystèmes du centre-est de l'Argentine

Patch and landscape responses of bird abundance to fragmentation in agroecosystems of east-central Argentina = Abondance d'oiseaux dans les îlots et les paysages à la suite de la fragmentation dans des agrosystèmes du centre-est de l'Argentine

Forest fragmentation in agroecosystems is linked to declines of avian species worldwide. Agriculture has greatly reduced native forest cover in east-central Argentina. Assessing the influence of fragmentation on forest bird populations is vital to inform reliable conservation and management strategies for the Espinal region of Argentina. We determined the relationships of vegetation structure within native forest patches, size and shape of these patches (patch scale), composition and spatial configuration (at landscape scale) to relative abundance of 17 forest bird species during austral fall-winter and spring-summer seasons. Birds were sampled from 2007–2009 in 45 forest patches within three landscape mosaics (30 x 30 km) representing a gradient of native forest fragmentation in east-central Argentina. We used an information-theoretic approach and approximated model inference to examine the effect of predictor environmental variables at two spatial scales on patterns of forest bird abundance. Density of trees within forest patches was the main predictor of bird abundance at the patch scale. Amount of forest and spatial configuration were also important. The abundance of several bird species was greater in patches with high density of trees and landscapes characterized by more forest cover and larger patches in close proximity. We found two main avian response patterns to forest fragmentation and patch characteristics. This information contributes reliable knowledge for the design of conservation measures of agricultural landscapes in the Espinal region of Argentina.

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Bibliographic Details
Main Authors: Calamari, Noelia Cecilia, Vilella, Franciso J., Sica, Yanina V., Mercuri, Pablo Alberto
Format: info:ar-repo/semantics/artículo biblioteca
Language:eng
Published: Society of Canadian Ornithologists and Bird Studies Canada 2018
Subjects:Agroecosistemas, Pájaros, Paisaje, Bosques, Agroecosystems, Birds, Landscape, Forests, Aves, Argentina,
Online Access:https://www.ace-eco.org/vol13/iss2/art3/
http://hdl.handle.net/20.500.12123/4133
https://doi.org/10.5751/ACE-01222-130203
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record_format koha
institution INTA AR
collection DSpace
country Argentina
countrycode AR
component Bibliográfico
access En linea
databasecode dig-inta-ar
tag biblioteca
region America del Sur
libraryname Biblioteca Central del INTA Argentina
language eng
topic Agroecosistemas
Pájaros
Paisaje
Bosques
Agroecosystems
Birds
Landscape
Forests
Aves
Argentina
Agroecosistemas
Pájaros
Paisaje
Bosques
Agroecosystems
Birds
Landscape
Forests
Aves
Argentina
spellingShingle Agroecosistemas
Pájaros
Paisaje
Bosques
Agroecosystems
Birds
Landscape
Forests
Aves
Argentina
Agroecosistemas
Pájaros
Paisaje
Bosques
Agroecosystems
Birds
Landscape
Forests
Aves
Argentina
Calamari, Noelia Cecilia
Vilella, Franciso J.
Sica, Yanina V.
Mercuri, Pablo Alberto
Patch and landscape responses of bird abundance to fragmentation in agroecosystems of east-central Argentina = Abondance d'oiseaux dans les îlots et les paysages à la suite de la fragmentation dans des agrosystèmes du centre-est de l'Argentine
description Forest fragmentation in agroecosystems is linked to declines of avian species worldwide. Agriculture has greatly reduced native forest cover in east-central Argentina. Assessing the influence of fragmentation on forest bird populations is vital to inform reliable conservation and management strategies for the Espinal region of Argentina. We determined the relationships of vegetation structure within native forest patches, size and shape of these patches (patch scale), composition and spatial configuration (at landscape scale) to relative abundance of 17 forest bird species during austral fall-winter and spring-summer seasons. Birds were sampled from 2007–2009 in 45 forest patches within three landscape mosaics (30 x 30 km) representing a gradient of native forest fragmentation in east-central Argentina. We used an information-theoretic approach and approximated model inference to examine the effect of predictor environmental variables at two spatial scales on patterns of forest bird abundance. Density of trees within forest patches was the main predictor of bird abundance at the patch scale. Amount of forest and spatial configuration were also important. The abundance of several bird species was greater in patches with high density of trees and landscapes characterized by more forest cover and larger patches in close proximity. We found two main avian response patterns to forest fragmentation and patch characteristics. This information contributes reliable knowledge for the design of conservation measures of agricultural landscapes in the Espinal region of Argentina.
format info:ar-repo/semantics/artículo
topic_facet Agroecosistemas
Pájaros
Paisaje
Bosques
Agroecosystems
Birds
Landscape
Forests
Aves
Argentina
author Calamari, Noelia Cecilia
Vilella, Franciso J.
Sica, Yanina V.
Mercuri, Pablo Alberto
author_facet Calamari, Noelia Cecilia
Vilella, Franciso J.
Sica, Yanina V.
Mercuri, Pablo Alberto
author_sort Calamari, Noelia Cecilia
title Patch and landscape responses of bird abundance to fragmentation in agroecosystems of east-central Argentina = Abondance d'oiseaux dans les îlots et les paysages à la suite de la fragmentation dans des agrosystèmes du centre-est de l'Argentine
title_short Patch and landscape responses of bird abundance to fragmentation in agroecosystems of east-central Argentina = Abondance d'oiseaux dans les îlots et les paysages à la suite de la fragmentation dans des agrosystèmes du centre-est de l'Argentine
title_full Patch and landscape responses of bird abundance to fragmentation in agroecosystems of east-central Argentina = Abondance d'oiseaux dans les îlots et les paysages à la suite de la fragmentation dans des agrosystèmes du centre-est de l'Argentine
title_fullStr Patch and landscape responses of bird abundance to fragmentation in agroecosystems of east-central Argentina = Abondance d'oiseaux dans les îlots et les paysages à la suite de la fragmentation dans des agrosystèmes du centre-est de l'Argentine
title_full_unstemmed Patch and landscape responses of bird abundance to fragmentation in agroecosystems of east-central Argentina = Abondance d'oiseaux dans les îlots et les paysages à la suite de la fragmentation dans des agrosystèmes du centre-est de l'Argentine
title_sort patch and landscape responses of bird abundance to fragmentation in agroecosystems of east-central argentina = abondance d'oiseaux dans les îlots et les paysages à la suite de la fragmentation dans des agrosystèmes du centre-est de l'argentine
publisher Society of Canadian Ornithologists and Bird Studies Canada
publishDate 2018
url https://www.ace-eco.org/vol13/iss2/art3/
http://hdl.handle.net/20.500.12123/4133
https://doi.org/10.5751/ACE-01222-130203
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spelling oai:localhost:20.500.12123-41332018-12-21T12:34:42Z Patch and landscape responses of bird abundance to fragmentation in agroecosystems of east-central Argentina = Abondance d'oiseaux dans les îlots et les paysages à la suite de la fragmentation dans des agrosystèmes du centre-est de l'Argentine Calamari, Noelia Cecilia Vilella, Franciso J. Sica, Yanina V. Mercuri, Pablo Alberto Agroecosistemas Pájaros Paisaje Bosques Agroecosystems Birds Landscape Forests Aves Argentina Forest fragmentation in agroecosystems is linked to declines of avian species worldwide. Agriculture has greatly reduced native forest cover in east-central Argentina. Assessing the influence of fragmentation on forest bird populations is vital to inform reliable conservation and management strategies for the Espinal region of Argentina. We determined the relationships of vegetation structure within native forest patches, size and shape of these patches (patch scale), composition and spatial configuration (at landscape scale) to relative abundance of 17 forest bird species during austral fall-winter and spring-summer seasons. Birds were sampled from 2007–2009 in 45 forest patches within three landscape mosaics (30 x 30 km) representing a gradient of native forest fragmentation in east-central Argentina. We used an information-theoretic approach and approximated model inference to examine the effect of predictor environmental variables at two spatial scales on patterns of forest bird abundance. Density of trees within forest patches was the main predictor of bird abundance at the patch scale. Amount of forest and spatial configuration were also important. The abundance of several bird species was greater in patches with high density of trees and landscapes characterized by more forest cover and larger patches in close proximity. We found two main avian response patterns to forest fragmentation and patch characteristics. This information contributes reliable knowledge for the design of conservation measures of agricultural landscapes in the Espinal region of Argentina. La fragmentation forestière dans les agrosystèmes est liée à la diminution d'espèces aviaires partout dans le monde. L'agriculture a grandement réduit la superficie de forêts indigènes dans le centre-est de l'Argentine. L'évaluation de l'influence de la fragmentation sur les populations d'oiseaux forestiers est cruciale pour que les gestionnaires puissent choisit des stratégies de conservation et de gestion fiables dans la région de l'Espinal en Argentine. Nous avons déterminé les relations de la structure de la végétation dans les îlots forestiers, de la taille et de la forme de ces îlots (échelle des îlots), de la composition et de la configuration spatiale (à l'échelle du paysage) avec l'abondance relative de 17 espèces d'oiseaux forestiers durant les saisons automne-hiver et printemps-été austraux. Les oiseaux ont été échantillonnés de 2007 à 2009 dans 45 îlots forestiers se trouvant dans 3 mosaïques paysagères (30 x 30 km) représentatives d'un gradient de fragmentation de la forêt indigène dans le centre-est de l'Argentine. Nous avons utilisé une approche fondée sur la théorie de l'information et un modèle d'inférence flou pour examiner l'effet des variables environnementales explicatives sur la tendance de l'abondance des oiseaux forestiers aux deux échelles spatiales. La densité d'arbres dans les îlots forestiers était la principale variable explicative de l'abondance à l'échelle des îlots. La superficie de forêt et la configuration spatiale étaient aussi importantes. L'abondance de plusieurs espèces d'oiseaux était supérieure dans les îlots où la densité d'arbres était élevée et dans les paysages caractérisés par une plus grande superficie de couvert forestier et par de plus grands îlots près les uns des autres. Nous avons trouvé deux types principaux de réaction des oiseaux à la fragmentation forestière et aux caractéristiques des îlots. Ces résultats contribuent à une connaissance plus éclairée en vue d'élaborer des mesures de conservation de paysages agricoles dans la région de l'Espinal en Argentine. EEA Paraná Fil: Calamari, Noelia Cecilia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Paraná; Argentina Fil: Vilella, Franciso J. Mississippi Cooperative Fish and Wildlife Research Unit. U.S. Geological Survey; Estados Unidos. Mississippi State University. Department of Wildlife, Fisheries and Aquaculture; Estados Unidos Fil: Sica, Yanina V. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental; Argentina Fil: Mercuri, Pablo Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Clima y Agua; Argentina 2018-12-21T12:30:59Z 2018-12-21T12:30:59Z 2018 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.ace-eco.org/vol13/iss2/art3/ http://hdl.handle.net/20.500.12123/4133 1712-6568 https://doi.org/10.5751/ACE-01222-130203 eng info:eu-repo/semantics/openAccess application/pdf Society of Canadian Ornithologists and Bird Studies Canada Avian Conservation and Ecology 13 (2) : 3 (2018)

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