Functional traits of indigenous and exotic ground-dwelling arthropods show contrasting responses to land-use change in an oceanic island, Terceira, Azores

Aim Land-use change typically goes hand-in-hand with the introduction of exotic species, which mingle with indigenous species to form novel assemblages. Here we compare the functional structure of indigenous and exotic elements of ground-dwelling arthropod assemblages across four land-uses of varyin...

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Published in:Diversity and Distributions
Main Authors: Rigal, F, Cardoso, P, Lobo, JM, Triantis, KA, Whittaker, RJ, Amorim, IR, Borges, PAV
Format: Article in Journal/Newspaper
Language:unknown
Published: Wiley 2017
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Online Access:https://doi.org/10.1111/ddi.12655
https://ora.ox.ac.uk/objects/uuid:fb60572f-5726-4486-9c58-972449d08d62
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spelling ftuloxford:oai:ora.ox.ac.uk:uuid:fb60572f-5726-4486-9c58-972449d08d62 2023-05-15T17:36:20+02:00 Functional traits of indigenous and exotic ground-dwelling arthropods show contrasting responses to land-use change in an oceanic island, Terceira, Azores Rigal, F Cardoso, P Lobo, JM Triantis, KA Whittaker, RJ Amorim, IR Borges, PAV 2017-09-04 https://doi.org/10.1111/ddi.12655 https://ora.ox.ac.uk/objects/uuid:fb60572f-5726-4486-9c58-972449d08d62 unknown Wiley doi:10.1111/ddi.12655 https://ora.ox.ac.uk/objects/uuid:fb60572f-5726-4486-9c58-972449d08d62 https://doi.org/10.1111/ddi.12655 info:eu-repo/semantics/openAccess Journal article 2017 ftuloxford https://doi.org/10.1111/ddi.12655 2022-06-28T20:28:43Z Aim Land-use change typically goes hand-in-hand with the introduction of exotic species, which mingle with indigenous species to form novel assemblages. Here we compare the functional structure of indigenous and exotic elements of ground-dwelling arthropod assemblages across four land-uses of varying management intensity. Location Terceira Island (Azores, North Atlantic). Methods We used pitfall traps to sample arthropods in 36 sites across the four land-uses and collated traits related to dispersal ability, body size and resource-use. For both indigenous and exotic species, we examined the impact of land-uses on trait diversity and tested for the existence of non-random assembly processes using null models. We analysed differences in trait composition among land-uses for both indigenous and exotic species with multivariate analyses. We used point-biserial correlations to identity traits significantly correlated with specific land-uses for each element. Results We recorded 86 indigenous and 116 exotic arthropod species. Under high intensity land-use, both indigenous and exotic elements showed significant trait clustering. Trait composition strongly shifted across land-uses, with indigenous and exotic species being functionally dissimilar in all land-uses. Large-bodied herbivores dominated exotic species in low intensity land-uses, while small-bodied spiders dominated exotics in high intensity land-uses. In contrast, with increasing land-use intensity, indigenous species changed from functionally diverse to being dominated by piercing and cutting herbivores. Main conclusion Our study revealed two main findings: first, in high intensity land-uses, trait clustering characterized both indigenous and exotic elements; second, exotic species differed in their functional profile from indigenous species in all land-use types. Overall, our results provide new insights into the functional role of exotic species in a land-use context, suggesting that, in agricultural landscape, exotic species may contribute positively to ... Article in Journal/Newspaper North Atlantic ORA - Oxford University Research Archive Diversity and Distributions 24 1 36 47
institution Open Polar
collection ORA - Oxford University Research Archive
op_collection_id ftuloxford
language unknown
description Aim Land-use change typically goes hand-in-hand with the introduction of exotic species, which mingle with indigenous species to form novel assemblages. Here we compare the functional structure of indigenous and exotic elements of ground-dwelling arthropod assemblages across four land-uses of varying management intensity. Location Terceira Island (Azores, North Atlantic). Methods We used pitfall traps to sample arthropods in 36 sites across the four land-uses and collated traits related to dispersal ability, body size and resource-use. For both indigenous and exotic species, we examined the impact of land-uses on trait diversity and tested for the existence of non-random assembly processes using null models. We analysed differences in trait composition among land-uses for both indigenous and exotic species with multivariate analyses. We used point-biserial correlations to identity traits significantly correlated with specific land-uses for each element. Results We recorded 86 indigenous and 116 exotic arthropod species. Under high intensity land-use, both indigenous and exotic elements showed significant trait clustering. Trait composition strongly shifted across land-uses, with indigenous and exotic species being functionally dissimilar in all land-uses. Large-bodied herbivores dominated exotic species in low intensity land-uses, while small-bodied spiders dominated exotics in high intensity land-uses. In contrast, with increasing land-use intensity, indigenous species changed from functionally diverse to being dominated by piercing and cutting herbivores. Main conclusion Our study revealed two main findings: first, in high intensity land-uses, trait clustering characterized both indigenous and exotic elements; second, exotic species differed in their functional profile from indigenous species in all land-use types. Overall, our results provide new insights into the functional role of exotic species in a land-use context, suggesting that, in agricultural landscape, exotic species may contribute positively to ...
format Article in Journal/Newspaper
author Rigal, F
Cardoso, P
Lobo, JM
Triantis, KA
Whittaker, RJ
Amorim, IR
Borges, PAV
spellingShingle Rigal, F
Cardoso, P
Lobo, JM
Triantis, KA
Whittaker, RJ
Amorim, IR
Borges, PAV
Functional traits of indigenous and exotic ground-dwelling arthropods show contrasting responses to land-use change in an oceanic island, Terceira, Azores
author_facet Rigal, F
Cardoso, P
Lobo, JM
Triantis, KA
Whittaker, RJ
Amorim, IR
Borges, PAV
author_sort Rigal, F
title Functional traits of indigenous and exotic ground-dwelling arthropods show contrasting responses to land-use change in an oceanic island, Terceira, Azores
title_short Functional traits of indigenous and exotic ground-dwelling arthropods show contrasting responses to land-use change in an oceanic island, Terceira, Azores
title_full Functional traits of indigenous and exotic ground-dwelling arthropods show contrasting responses to land-use change in an oceanic island, Terceira, Azores
title_fullStr Functional traits of indigenous and exotic ground-dwelling arthropods show contrasting responses to land-use change in an oceanic island, Terceira, Azores
title_full_unstemmed Functional traits of indigenous and exotic ground-dwelling arthropods show contrasting responses to land-use change in an oceanic island, Terceira, Azores
title_sort functional traits of indigenous and exotic ground-dwelling arthropods show contrasting responses to land-use change in an oceanic island, terceira, azores
publisher Wiley
publishDate 2017
url https://doi.org/10.1111/ddi.12655
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genre North Atlantic
genre_facet North Atlantic
op_relation doi:10.1111/ddi.12655
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https://doi.org/10.1111/ddi.12655
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container_title Diversity and Distributions
container_volume 24
container_issue 1
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