The role of invertebrates and aquatic fungi on the decomposition of eucalyptus leaves in streams

Bibliographic Details
Main Author: Mesquita, Ana
Publication Date: 2004
Other Authors: Pascoal, Cláudia, Cássio, Fernanda
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://hdl.handle.net/1822/2378
Summary: Resumo da comunicação apresentada no XII Congresso da Association Española de Limnología - IV Congresso Ibérico de Limnologia. CIMAR, Universidade do Porto, 5-9 Julho 2004.
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spelling The role of invertebrates and aquatic fungi on the decomposition of eucalyptus leaves in streamsLeaf breakdownEucaliptInvertebratesAquatic fungiAquatic hyphomycetesPolluted streamResumo da comunicação apresentada no XII Congresso da Association Española de Limnología - IV Congresso Ibérico de Limnologia. CIMAR, Universidade do Porto, 5-9 Julho 2004.Leaves entering in streams are subject to physical abrasion, invertebrate fragmentation and microbial degradation. Fungi, particularly aquatic hyphomycetes, dominate microbial leaf decomposition and condition the leaves, increasing their palatability for invertebrate shredders. The aim of this work was to study the relative role of invertebrates and aquatic fungi on leaf decomposition of Eucalyptus globulus Labill. in two rivers of Northwest Portugal with different water chemistry. For that purpose, leaf decomposition was followed in coarse-mesh and fine-mesh bags. Physical, chemical and microbial analyses of the stream water, as well as, biotic indices and diversity measures applied to the invertebrates associated with leaves showed that the Guisande River had better water quality than the Este River. Decomposition rates of eucalyptus leaves were significantly higher in the Guisande River (k = 0.019 to 0.029 dˉ¹) than in the Este River (k = 0.009 to 0.011 dˉ¹). Significantly higher fungal biomass (up to 790 μg ergosterol gˉ¹ AFDM) and sporulation rates (up to 370 conidia mgˉ¹ AFDM dˉ¹) occurred in the Guisande River in comparison with the Este River (fungal biomass up to 280 μg ergosterol gˉ¹ AFDM; sporulation rates up to 90 conidia mgˉ¹ AFDM dˉ¹). Correspondence analyses applied to aquatic hyphomycete and invertebrate assemblages discriminated the two rivers and higher richness in taxa was found in the Guisande River. In this river, leaf decomposition rate was significantly higher in coarse-mesh than in fine-mesh bags. However, in the Este River no significant differences were found between coarse-mesh and fine-mesh bags, which can be attributed to the absence of shredders and low current velocity in this river.Universidade do MinhoMesquita, AnaPascoal, CláudiaCássio, Fernanda2004-072004-07-01T00:00:00Zconference objectinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/1822/2378enginfo:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2024-05-11T05:22:49Zoai:repositorium.sdum.uminho.pt:1822/2378Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T15:16:45.625789Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv The role of invertebrates and aquatic fungi on the decomposition of eucalyptus leaves in streams
title The role of invertebrates and aquatic fungi on the decomposition of eucalyptus leaves in streams
spellingShingle The role of invertebrates and aquatic fungi on the decomposition of eucalyptus leaves in streams
Mesquita, Ana
Leaf breakdown
Eucalipt
Invertebrates
Aquatic fungi
Aquatic hyphomycetes
Polluted stream
title_short The role of invertebrates and aquatic fungi on the decomposition of eucalyptus leaves in streams
title_full The role of invertebrates and aquatic fungi on the decomposition of eucalyptus leaves in streams
title_fullStr The role of invertebrates and aquatic fungi on the decomposition of eucalyptus leaves in streams
title_full_unstemmed The role of invertebrates and aquatic fungi on the decomposition of eucalyptus leaves in streams
title_sort The role of invertebrates and aquatic fungi on the decomposition of eucalyptus leaves in streams
author Mesquita, Ana
author_facet Mesquita, Ana
Pascoal, Cláudia
Cássio, Fernanda
author_role author
author2 Pascoal, Cláudia
Cássio, Fernanda
author2_role author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Mesquita, Ana
Pascoal, Cláudia
Cássio, Fernanda
dc.subject.por.fl_str_mv Leaf breakdown
Eucalipt
Invertebrates
Aquatic fungi
Aquatic hyphomycetes
Polluted stream
topic Leaf breakdown
Eucalipt
Invertebrates
Aquatic fungi
Aquatic hyphomycetes
Polluted stream
description Resumo da comunicação apresentada no XII Congresso da Association Española de Limnología - IV Congresso Ibérico de Limnologia. CIMAR, Universidade do Porto, 5-9 Julho 2004.
publishDate 2004
dc.date.none.fl_str_mv 2004-07
2004-07-01T00:00:00Z
dc.type.driver.fl_str_mv conference object
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/2378
url http://hdl.handle.net/1822/2378
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
_version_ 1833595213682049024

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