Litter traits and palatability to detritivores: a case study across bio-geographical boundaries
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Nauplius |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-64972014000200004 |
Resumo: | The activity of the litter-feeding macrofauna affects litter decomposition rates at the local scale, and their preference for particular litter types is mediated by litter traits. Environmental changes such as invasion by exotic plants may change the characteristics of the litter at a local scale, with consequences to ecosystem processes. Here we evaluated the feeding preferences of four detritivores (terrestrial isopods) from two biogeographic regions (neotropical and palearctic), offering them native or non-native litter in cafeteria experiments. Our results show that isopods from different geographical regions exhibit essentially the same food preference, irrespective of whether or not they previously had encountered the litter tested. Combining the isopods' preference ranks with the principal component analysis of nine litter traits, we show that preference increases with increasing nitrogen and calcium contents and decreases with increasing toughness, C:N ratio and thickness, irrespective of the geographical origin of both litter and detritivores. We conclude that the palatability of a non-native litter to the native detritivore community can be predicted from their respective litter traits and thus, native detritivores will feed on a particular non-native litter type as likely as do detritivores in the native range of the plant. As the combination of traits that indicates palatability to the isopods also indicates litter decomposability, it could be possible to predict ecosystem responses in terms of litter decomposition rates upon changes in litter composition. |
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Litter traits and palatability to detritivores: a case study across bio-geographical boundariesDetritivoryfeeding preferenceslitter traitsterrestrial isopodsThe activity of the litter-feeding macrofauna affects litter decomposition rates at the local scale, and their preference for particular litter types is mediated by litter traits. Environmental changes such as invasion by exotic plants may change the characteristics of the litter at a local scale, with consequences to ecosystem processes. Here we evaluated the feeding preferences of four detritivores (terrestrial isopods) from two biogeographic regions (neotropical and palearctic), offering them native or non-native litter in cafeteria experiments. Our results show that isopods from different geographical regions exhibit essentially the same food preference, irrespective of whether or not they previously had encountered the litter tested. Combining the isopods' preference ranks with the principal component analysis of nine litter traits, we show that preference increases with increasing nitrogen and calcium contents and decreases with increasing toughness, C:N ratio and thickness, irrespective of the geographical origin of both litter and detritivores. We conclude that the palatability of a non-native litter to the native detritivore community can be predicted from their respective litter traits and thus, native detritivores will feed on a particular non-native litter type as likely as do detritivores in the native range of the plant. As the combination of traits that indicates palatability to the isopods also indicates litter decomposability, it could be possible to predict ecosystem responses in terms of litter decomposition rates upon changes in litter composition.Sociedade Brasileira de Carcinologia2014-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-64972014000200004Nauplius v.22 n.2 2014reponame:Naupliusinstname:Sociedade Brasileira de Carcinologia (SBCA)instacron:SBCA10.1590/S0104-64972014000200004info:eu-repo/semantics/openAccessQuadros,Aline FerreiraZimmer,MartinAraujo,Paula BeatrizKray,Jair Gilbertoeng2015-01-28T00:00:00Zoai:scielo:S0104-64972014000200004Revistahttp://www.scielo.br/scielo.php?script=sci_serial&pid=0104-6497&lng=en&nrm=isohttps://old.scielo.br/oai/scielo-oai.php||editor.nauplius@gmail.com2358-29360104-6497opendoar:2015-01-28T00:00Nauplius - Sociedade Brasileira de Carcinologia (SBCA)false |
dc.title.none.fl_str_mv |
Litter traits and palatability to detritivores: a case study across bio-geographical boundaries |
title |
Litter traits and palatability to detritivores: a case study across bio-geographical boundaries |
spellingShingle |
Litter traits and palatability to detritivores: a case study across bio-geographical boundaries Quadros,Aline Ferreira Detritivory feeding preferences litter traits terrestrial isopods |
title_short |
Litter traits and palatability to detritivores: a case study across bio-geographical boundaries |
title_full |
Litter traits and palatability to detritivores: a case study across bio-geographical boundaries |
title_fullStr |
Litter traits and palatability to detritivores: a case study across bio-geographical boundaries |
title_full_unstemmed |
Litter traits and palatability to detritivores: a case study across bio-geographical boundaries |
title_sort |
Litter traits and palatability to detritivores: a case study across bio-geographical boundaries |
author |
Quadros,Aline Ferreira |
author_facet |
Quadros,Aline Ferreira Zimmer,Martin Araujo,Paula Beatriz Kray,Jair Gilberto |
author_role |
author |
author2 |
Zimmer,Martin Araujo,Paula Beatriz Kray,Jair Gilberto |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Quadros,Aline Ferreira Zimmer,Martin Araujo,Paula Beatriz Kray,Jair Gilberto |
dc.subject.por.fl_str_mv |
Detritivory feeding preferences litter traits terrestrial isopods |
topic |
Detritivory feeding preferences litter traits terrestrial isopods |
description |
The activity of the litter-feeding macrofauna affects litter decomposition rates at the local scale, and their preference for particular litter types is mediated by litter traits. Environmental changes such as invasion by exotic plants may change the characteristics of the litter at a local scale, with consequences to ecosystem processes. Here we evaluated the feeding preferences of four detritivores (terrestrial isopods) from two biogeographic regions (neotropical and palearctic), offering them native or non-native litter in cafeteria experiments. Our results show that isopods from different geographical regions exhibit essentially the same food preference, irrespective of whether or not they previously had encountered the litter tested. Combining the isopods' preference ranks with the principal component analysis of nine litter traits, we show that preference increases with increasing nitrogen and calcium contents and decreases with increasing toughness, C:N ratio and thickness, irrespective of the geographical origin of both litter and detritivores. We conclude that the palatability of a non-native litter to the native detritivore community can be predicted from their respective litter traits and thus, native detritivores will feed on a particular non-native litter type as likely as do detritivores in the native range of the plant. As the combination of traits that indicates palatability to the isopods also indicates litter decomposability, it could be possible to predict ecosystem responses in terms of litter decomposition rates upon changes in litter composition. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-12-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-64972014000200004 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-64972014000200004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0104-64972014000200004 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Carcinologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Carcinologia |
dc.source.none.fl_str_mv |
Nauplius v.22 n.2 2014 reponame:Nauplius instname:Sociedade Brasileira de Carcinologia (SBCA) instacron:SBCA |
instname_str |
Sociedade Brasileira de Carcinologia (SBCA) |
instacron_str |
SBCA |
institution |
SBCA |
reponame_str |
Nauplius |
collection |
Nauplius |
repository.name.fl_str_mv |
Nauplius - Sociedade Brasileira de Carcinologia (SBCA) |
repository.mail.fl_str_mv |
||editor.nauplius@gmail.com |
_version_ |
1752126581877243904 |