Trait-independent habitat associations explain low co-occurrence in native and exotic birds on a tropical volcanic island
On oceanic islands, strong human impacts on habitats, combined with introductions of exotic species, modify the composition of terrestrial bird assemblages and threaten their ecological functions. In La Réunion, an oceanic island located in the Madagascan region, a national park was established in 2007 to counter the ecosystem-level effects of three centuries of habitat conversion, native species destruction and exotic species introductions. Here, we investigated how bird assemblages were structured in these human-modified landscapes, 10 years before the national park set out its first conservation measures. We used a combination of multivariate statistics and generalized additive models to describe variations in the taxonomic and functional composition and diversity of 372 local bird assemblages, encompassing 20 species, along gradients of habitat composition and configuration. We found that native species were tied to native habitats while exotic species were associated with urban areas and man-modified landscape mosaics, with some overlap at mid-elevations. Species' trophic preferences were segregated along habitat gradients, but ecological traits had an overall weak role in explaining the composition of species assemblages. Hence, at the time of the survey, native and exotic species in La Réunion formed two spatially distinct species assemblages with contrasting ecological trait suites that benefited from antagonistic habitat compositions and dynamics. We conclude that our results support the analysis of historical data sets to establish reference points to monitor human impacts on insular ecosystems.
id |
dig-cirad-fr-607996 |
---|---|
record_format |
koha |
spelling |
dig-cirad-fr-6079962024-01-29T06:23:34Z http://agritrop.cirad.fr/607996/ http://agritrop.cirad.fr/607996/ Trait-independent habitat associations explain low co-occurrence in native and exotic birds on a tropical volcanic island. Barnagaud Jean-Yves, Flores Olivier, Balent Gérard, Tassin Jacques, Barbaro Luc. 2023. Ecology and Evolution, 13 (7):e10322, 16 p.https://doi.org/10.1002/ece3.10322 <https://doi.org/10.1002/ece3.10322> Trait-independent habitat associations explain low co-occurrence in native and exotic birds on a tropical volcanic island Barnagaud, Jean-Yves Flores, Olivier Balent, Gérard Tassin, Jacques Barbaro, Luc eng 2023 Ecology and Evolution P01 - Conservation de la nature et ressources foncières U60 - Sciences de la vie et de la Terre oiseau habitat biodiversité organisme indigène écologie espèce introduite distribution spatiale écologie animale dynamique des populations distribution des populations distribution géographique http://aims.fao.org/aos/agrovoc/c_935 http://aims.fao.org/aos/agrovoc/c_3456 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_34268 http://aims.fao.org/aos/agrovoc/c_2467 http://aims.fao.org/aos/agrovoc/c_1333440888271 http://aims.fao.org/aos/agrovoc/c_36230 http://aims.fao.org/aos/agrovoc/c_427 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_6113 http://aims.fao.org/aos/agrovoc/c_5083 La Réunion France Madagascar http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 http://aims.fao.org/aos/agrovoc/c_4510 On oceanic islands, strong human impacts on habitats, combined with introductions of exotic species, modify the composition of terrestrial bird assemblages and threaten their ecological functions. In La Réunion, an oceanic island located in the Madagascan region, a national park was established in 2007 to counter the ecosystem-level effects of three centuries of habitat conversion, native species destruction and exotic species introductions. Here, we investigated how bird assemblages were structured in these human-modified landscapes, 10 years before the national park set out its first conservation measures. We used a combination of multivariate statistics and generalized additive models to describe variations in the taxonomic and functional composition and diversity of 372 local bird assemblages, encompassing 20 species, along gradients of habitat composition and configuration. We found that native species were tied to native habitats while exotic species were associated with urban areas and man-modified landscape mosaics, with some overlap at mid-elevations. Species' trophic preferences were segregated along habitat gradients, but ecological traits had an overall weak role in explaining the composition of species assemblages. Hence, at the time of the survey, native and exotic species in La Réunion formed two spatially distinct species assemblages with contrasting ecological trait suites that benefited from antagonistic habitat compositions and dynamics. We conclude that our results support the analysis of historical data sets to establish reference points to monitor human impacts on insular ecosystems. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/607996/1/Ecology%20and%20Evolution%20-%202023%20-%20Barnagaud%20-%20Trait%E2%80%90independent%20habitat%20associations%20explain%20low%20co%E2%80%90occurrence%20in%20native%20and.pdf text cc_by info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ https://doi.org/10.1002/ece3.10322 10.1002/ece3.10322 info:eu-repo/semantics/altIdentifier/doi/10.1002/ece3.10322 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1002/ece3.10322 info:eu-repo/semantics/dataset/purl/https://doi.org/10.57745/BFEXCE info:eu-repo/grantAgreement/////(FRA) BIOTA/ |
institution |
CIRAD FR |
collection |
DSpace |
country |
Francia |
countrycode |
FR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-cirad-fr |
tag |
biblioteca |
region |
Europa del Oeste |
libraryname |
Biblioteca del CIRAD Francia |
language |
eng |
topic |
P01 - Conservation de la nature et ressources foncières U60 - Sciences de la vie et de la Terre oiseau habitat biodiversité organisme indigène écologie espèce introduite distribution spatiale écologie animale dynamique des populations distribution des populations distribution géographique http://aims.fao.org/aos/agrovoc/c_935 http://aims.fao.org/aos/agrovoc/c_3456 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_34268 http://aims.fao.org/aos/agrovoc/c_2467 http://aims.fao.org/aos/agrovoc/c_1333440888271 http://aims.fao.org/aos/agrovoc/c_36230 http://aims.fao.org/aos/agrovoc/c_427 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_6113 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 http://aims.fao.org/aos/agrovoc/c_4510 P01 - Conservation de la nature et ressources foncières U60 - Sciences de la vie et de la Terre oiseau habitat biodiversité organisme indigène écologie espèce introduite distribution spatiale écologie animale dynamique des populations distribution des populations distribution géographique http://aims.fao.org/aos/agrovoc/c_935 http://aims.fao.org/aos/agrovoc/c_3456 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_34268 http://aims.fao.org/aos/agrovoc/c_2467 http://aims.fao.org/aos/agrovoc/c_1333440888271 http://aims.fao.org/aos/agrovoc/c_36230 http://aims.fao.org/aos/agrovoc/c_427 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_6113 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 http://aims.fao.org/aos/agrovoc/c_4510 |
spellingShingle |
P01 - Conservation de la nature et ressources foncières U60 - Sciences de la vie et de la Terre oiseau habitat biodiversité organisme indigène écologie espèce introduite distribution spatiale écologie animale dynamique des populations distribution des populations distribution géographique http://aims.fao.org/aos/agrovoc/c_935 http://aims.fao.org/aos/agrovoc/c_3456 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_34268 http://aims.fao.org/aos/agrovoc/c_2467 http://aims.fao.org/aos/agrovoc/c_1333440888271 http://aims.fao.org/aos/agrovoc/c_36230 http://aims.fao.org/aos/agrovoc/c_427 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_6113 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 http://aims.fao.org/aos/agrovoc/c_4510 P01 - Conservation de la nature et ressources foncières U60 - Sciences de la vie et de la Terre oiseau habitat biodiversité organisme indigène écologie espèce introduite distribution spatiale écologie animale dynamique des populations distribution des populations distribution géographique http://aims.fao.org/aos/agrovoc/c_935 http://aims.fao.org/aos/agrovoc/c_3456 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_34268 http://aims.fao.org/aos/agrovoc/c_2467 http://aims.fao.org/aos/agrovoc/c_1333440888271 http://aims.fao.org/aos/agrovoc/c_36230 http://aims.fao.org/aos/agrovoc/c_427 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_6113 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 http://aims.fao.org/aos/agrovoc/c_4510 Barnagaud, Jean-Yves Flores, Olivier Balent, Gérard Tassin, Jacques Barbaro, Luc Trait-independent habitat associations explain low co-occurrence in native and exotic birds on a tropical volcanic island |
description |
On oceanic islands, strong human impacts on habitats, combined with introductions of exotic species, modify the composition of terrestrial bird assemblages and threaten their ecological functions. In La Réunion, an oceanic island located in the Madagascan region, a national park was established in 2007 to counter the ecosystem-level effects of three centuries of habitat conversion, native species destruction and exotic species introductions. Here, we investigated how bird assemblages were structured in these human-modified landscapes, 10 years before the national park set out its first conservation measures. We used a combination of multivariate statistics and generalized additive models to describe variations in the taxonomic and functional composition and diversity of 372 local bird assemblages, encompassing 20 species, along gradients of habitat composition and configuration. We found that native species were tied to native habitats while exotic species were associated with urban areas and man-modified landscape mosaics, with some overlap at mid-elevations. Species' trophic preferences were segregated along habitat gradients, but ecological traits had an overall weak role in explaining the composition of species assemblages. Hence, at the time of the survey, native and exotic species in La Réunion formed two spatially distinct species assemblages with contrasting ecological trait suites that benefited from antagonistic habitat compositions and dynamics. We conclude that our results support the analysis of historical data sets to establish reference points to monitor human impacts on insular ecosystems. |
format |
article |
topic_facet |
P01 - Conservation de la nature et ressources foncières U60 - Sciences de la vie et de la Terre oiseau habitat biodiversité organisme indigène écologie espèce introduite distribution spatiale écologie animale dynamique des populations distribution des populations distribution géographique http://aims.fao.org/aos/agrovoc/c_935 http://aims.fao.org/aos/agrovoc/c_3456 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_34268 http://aims.fao.org/aos/agrovoc/c_2467 http://aims.fao.org/aos/agrovoc/c_1333440888271 http://aims.fao.org/aos/agrovoc/c_36230 http://aims.fao.org/aos/agrovoc/c_427 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_6113 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 http://aims.fao.org/aos/agrovoc/c_4510 |
author |
Barnagaud, Jean-Yves Flores, Olivier Balent, Gérard Tassin, Jacques Barbaro, Luc |
author_facet |
Barnagaud, Jean-Yves Flores, Olivier Balent, Gérard Tassin, Jacques Barbaro, Luc |
author_sort |
Barnagaud, Jean-Yves |
title |
Trait-independent habitat associations explain low co-occurrence in native and exotic birds on a tropical volcanic island |
title_short |
Trait-independent habitat associations explain low co-occurrence in native and exotic birds on a tropical volcanic island |
title_full |
Trait-independent habitat associations explain low co-occurrence in native and exotic birds on a tropical volcanic island |
title_fullStr |
Trait-independent habitat associations explain low co-occurrence in native and exotic birds on a tropical volcanic island |
title_full_unstemmed |
Trait-independent habitat associations explain low co-occurrence in native and exotic birds on a tropical volcanic island |
title_sort |
trait-independent habitat associations explain low co-occurrence in native and exotic birds on a tropical volcanic island |
url |
http://agritrop.cirad.fr/607996/ http://agritrop.cirad.fr/607996/1/Ecology%20and%20Evolution%20-%202023%20-%20Barnagaud%20-%20Trait%E2%80%90independent%20habitat%20associations%20explain%20low%20co%E2%80%90occurrence%20in%20native%20and.pdf |
work_keys_str_mv |
AT barnagaudjeanyves traitindependenthabitatassociationsexplainlowcooccurrenceinnativeandexoticbirdsonatropicalvolcanicisland AT floresolivier traitindependenthabitatassociationsexplainlowcooccurrenceinnativeandexoticbirdsonatropicalvolcanicisland AT balentgerard traitindependenthabitatassociationsexplainlowcooccurrenceinnativeandexoticbirdsonatropicalvolcanicisland AT tassinjacques traitindependenthabitatassociationsexplainlowcooccurrenceinnativeandexoticbirdsonatropicalvolcanicisland AT barbaroluc traitindependenthabitatassociationsexplainlowcooccurrenceinnativeandexoticbirdsonatropicalvolcanicisland |
_version_ |
1792500731910029312 |