Viés analítico em estudos tafonômicos com macroinvertebrados: Implicações (Paleo)ambientais e (Paleo)ecológicas
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.5327/Z1519-874X2009000100007 http://hdl.handle.net/11449/225727 |
Resumo: | A review of recent literature shows that most taphonomic studies of Holocene and fossil macrovertebrates are not methodologically standardized. Hence, results from distinct studies are not comparable, even among researches sharing virtually identical goals, targeting the same biological group of similar age and depositional environment. The effects of the shell size in the taphonomic analysis are still poorly understood. In order to study this issue, the taphonomic signatures (articulation, valve type, fragmentation, abrasion, corrosion, edge modification, color alteration, bioerosion and encrustation) of brachiopod shells [Bouchardia rosea (Mawe)], from Ubatuba Bay in the northern coast of São Paulo State, were investigated according to the sieve sizes. In the study area, 14 collecting stations were sampled via Van Veen grab sampler, along a bathymetric gradient, ranging from 0 to 35 m of depth. Bulk samples were sieved through 8 mm, 6 mm, and 2 mm mesh sizes, yielding a total of 5.204 shells. The results indicate that, when taphonomic signatures were independently analyzed per size classes (8 mm, 6 mm, and 2 mm), the taphonomic signatures are recorded in a complex and random way. Additionally, cluster analysis showed that the similarity among the clusters vary according to the considered sieve size. Thus, the sieve size plays an important role in the distribution of taphonomic signatures in shells of distinct sizes. These results suggest that the concentration of the taphonomic analysis on one class (e.g., the largest sieve size, 8 mm) is not always the best method. Rather, the total data (all sieves included) seems more accurate in recording the whole spectrum of taphonomic processes recorded in shells of a given assemblage. |
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Viés analítico em estudos tafonômicos com macroinvertebrados: Implicações (Paleo)ambientais e (Paleo)ecológicasAnalytical bias in taphonomic studies of macro-invertebrates: (Paleo)environmental and (Paleo) ecological implicationsBioclast sizeBrachiopodsHoloceneSieve sizeTaphonomic signaturesUbatuba BayA review of recent literature shows that most taphonomic studies of Holocene and fossil macrovertebrates are not methodologically standardized. Hence, results from distinct studies are not comparable, even among researches sharing virtually identical goals, targeting the same biological group of similar age and depositional environment. The effects of the shell size in the taphonomic analysis are still poorly understood. In order to study this issue, the taphonomic signatures (articulation, valve type, fragmentation, abrasion, corrosion, edge modification, color alteration, bioerosion and encrustation) of brachiopod shells [Bouchardia rosea (Mawe)], from Ubatuba Bay in the northern coast of São Paulo State, were investigated according to the sieve sizes. In the study area, 14 collecting stations were sampled via Van Veen grab sampler, along a bathymetric gradient, ranging from 0 to 35 m of depth. Bulk samples were sieved through 8 mm, 6 mm, and 2 mm mesh sizes, yielding a total of 5.204 shells. The results indicate that, when taphonomic signatures were independently analyzed per size classes (8 mm, 6 mm, and 2 mm), the taphonomic signatures are recorded in a complex and random way. Additionally, cluster analysis showed that the similarity among the clusters vary according to the considered sieve size. Thus, the sieve size plays an important role in the distribution of taphonomic signatures in shells of distinct sizes. These results suggest that the concentration of the taphonomic analysis on one class (e.g., the largest sieve size, 8 mm) is not always the best method. Rather, the total data (all sieves included) seems more accurate in recording the whole spectrum of taphonomic processes recorded in shells of a given assemblage.Departamento de Zoologia Instituto de Biociências UNESP, Distrito de Rubiao Junior s/n, Caixa Postal 510, CEP 18618-000, Botucatu, SPPrograma de Pós-graduação em Geoquímica e Geotectônica Instituto de Geociências USP, São Paulo, SPDepartamento de Zoologia Instituto de Biociências UNESP, Distrito de Rubiao Junior s/n, Caixa Postal 510, CEP 18618-000, Botucatu, SPUniversidade Estadual Paulista (UNESP)Universidade de São Paulo (USP)Rodrigues, Sabrina Coelho [UNESP]Simões, Marcello Guimarães [UNESP]Pires-Domingues, Ricardo Angelim2022-04-28T20:59:06Z2022-04-28T20:59:06Z2009-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article101-114http://dx.doi.org/10.5327/Z1519-874X2009000100007Geologia USP - Serie Cientifica, v. 9, n. 1, p. 101-114, 2009.1519-874Xhttp://hdl.handle.net/11449/22572710.5327/Z1519-874X20090001000072-s2.0-73549110282Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporGeologia USP - Serie Cientificainfo:eu-repo/semantics/openAccess2022-04-28T20:59:06Zoai:repositorio.unesp.br:11449/225727Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:34:24.993089Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Viés analítico em estudos tafonômicos com macroinvertebrados: Implicações (Paleo)ambientais e (Paleo)ecológicas Analytical bias in taphonomic studies of macro-invertebrates: (Paleo)environmental and (Paleo) ecological implications |
title |
Viés analítico em estudos tafonômicos com macroinvertebrados: Implicações (Paleo)ambientais e (Paleo)ecológicas |
spellingShingle |
Viés analítico em estudos tafonômicos com macroinvertebrados: Implicações (Paleo)ambientais e (Paleo)ecológicas Rodrigues, Sabrina Coelho [UNESP] Bioclast size Brachiopods Holocene Sieve size Taphonomic signatures Ubatuba Bay |
title_short |
Viés analítico em estudos tafonômicos com macroinvertebrados: Implicações (Paleo)ambientais e (Paleo)ecológicas |
title_full |
Viés analítico em estudos tafonômicos com macroinvertebrados: Implicações (Paleo)ambientais e (Paleo)ecológicas |
title_fullStr |
Viés analítico em estudos tafonômicos com macroinvertebrados: Implicações (Paleo)ambientais e (Paleo)ecológicas |
title_full_unstemmed |
Viés analítico em estudos tafonômicos com macroinvertebrados: Implicações (Paleo)ambientais e (Paleo)ecológicas |
title_sort |
Viés analítico em estudos tafonômicos com macroinvertebrados: Implicações (Paleo)ambientais e (Paleo)ecológicas |
author |
Rodrigues, Sabrina Coelho [UNESP] |
author_facet |
Rodrigues, Sabrina Coelho [UNESP] Simões, Marcello Guimarães [UNESP] Pires-Domingues, Ricardo Angelim |
author_role |
author |
author2 |
Simões, Marcello Guimarães [UNESP] Pires-Domingues, Ricardo Angelim |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Rodrigues, Sabrina Coelho [UNESP] Simões, Marcello Guimarães [UNESP] Pires-Domingues, Ricardo Angelim |
dc.subject.por.fl_str_mv |
Bioclast size Brachiopods Holocene Sieve size Taphonomic signatures Ubatuba Bay |
topic |
Bioclast size Brachiopods Holocene Sieve size Taphonomic signatures Ubatuba Bay |
description |
A review of recent literature shows that most taphonomic studies of Holocene and fossil macrovertebrates are not methodologically standardized. Hence, results from distinct studies are not comparable, even among researches sharing virtually identical goals, targeting the same biological group of similar age and depositional environment. The effects of the shell size in the taphonomic analysis are still poorly understood. In order to study this issue, the taphonomic signatures (articulation, valve type, fragmentation, abrasion, corrosion, edge modification, color alteration, bioerosion and encrustation) of brachiopod shells [Bouchardia rosea (Mawe)], from Ubatuba Bay in the northern coast of São Paulo State, were investigated according to the sieve sizes. In the study area, 14 collecting stations were sampled via Van Veen grab sampler, along a bathymetric gradient, ranging from 0 to 35 m of depth. Bulk samples were sieved through 8 mm, 6 mm, and 2 mm mesh sizes, yielding a total of 5.204 shells. The results indicate that, when taphonomic signatures were independently analyzed per size classes (8 mm, 6 mm, and 2 mm), the taphonomic signatures are recorded in a complex and random way. Additionally, cluster analysis showed that the similarity among the clusters vary according to the considered sieve size. Thus, the sieve size plays an important role in the distribution of taphonomic signatures in shells of distinct sizes. These results suggest that the concentration of the taphonomic analysis on one class (e.g., the largest sieve size, 8 mm) is not always the best method. Rather, the total data (all sieves included) seems more accurate in recording the whole spectrum of taphonomic processes recorded in shells of a given assemblage. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-01-01 2022-04-28T20:59:06Z 2022-04-28T20:59:06Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.5327/Z1519-874X2009000100007 Geologia USP - Serie Cientifica, v. 9, n. 1, p. 101-114, 2009. 1519-874X http://hdl.handle.net/11449/225727 10.5327/Z1519-874X2009000100007 2-s2.0-73549110282 |
url |
http://dx.doi.org/10.5327/Z1519-874X2009000100007 http://hdl.handle.net/11449/225727 |
identifier_str_mv |
Geologia USP - Serie Cientifica, v. 9, n. 1, p. 101-114, 2009. 1519-874X 10.5327/Z1519-874X2009000100007 2-s2.0-73549110282 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Geologia USP - Serie Cientifica |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
101-114 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129439015370752 |