ABSENCE OF STABILIZATION POINT OF THE SPECIES ACCUMULATION CURVE IN TROPICAL FORESTS

Detalhes bibliográficos
Autor(a) principal: Schilling, Ana Cristina
Data de Publicação: 2012
Outros Autores: Batista, João Luis Ferreira, Couto, Hilton Zarate do
Tipo de documento: Artigo
Idioma: por
Título da fonte: Ciência Florestal (Online)
Texto Completo: https://periodicos.ufsm.br/cienciaflorestal/article/view/5083
Resumo: http://dx.doi.org/10.5902/198050985083The definition of the sample size is a major problem in studies of phytosociology. The species accumulation curve is used to define the sampling sufficiency, but this method presents some limitations such as the absence of a stabilization point that can be objectively determined and the arbitrariness of the order of sampling units in the curve. A solution to this problem is the use of randomization procedures, e.g. permutation, for obtaining a mean species accumulation curve and empiric confidence intervals. However, the randomization process emphasizes the asymptotical character of the curve. Moreover, the inexistence of an inflection point in the curve makes it impossible to define objectively the point of optimum sample size.
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spelling ABSENCE OF STABILIZATION POINT OF THE SPECIES ACCUMULATION CURVE IN TROPICAL FORESTSAusência de estabilização da curva de acumulação de espécies em florestas tropicaisphytosociologysampling sufficiencyspecies-accumulation curvecurva de acumulação de espéciesfitossociologiasuficiência amostralhttp://dx.doi.org/10.5902/198050985083The definition of the sample size is a major problem in studies of phytosociology. The species accumulation curve is used to define the sampling sufficiency, but this method presents some limitations such as the absence of a stabilization point that can be objectively determined and the arbitrariness of the order of sampling units in the curve. A solution to this problem is the use of randomization procedures, e.g. permutation, for obtaining a mean species accumulation curve and empiric confidence intervals. However, the randomization process emphasizes the asymptotical character of the curve. Moreover, the inexistence of an inflection point in the curve makes it impossible to define objectively the point of optimum sample size.http://dx.doi.org/10.5902/198050985083A definição do tamanho da amostra é um dos principais problemas em levantamentos fitossociológicos. A curva de acumulação de espécies é comumente utilizada para definir a suficiência amostral, mas este método apresenta algumas limitações, como a ausência de um ponto de estabilização que possa ser determinado objetivamente e a arbitrariedade da ordem de entrada das unidades amostrais na construção da curva. Uma solução para esse problema é o uso de procedimentos de aleatorização, como a permutação, para obter curvas médias de acumulação de espécies e seus intervalos de confiança empíricos. Entretanto, esse procedimento enfatiza o caráter assintótico da curva, que não apresenta ponto de inflexão, tornando-se impossível a determinação de um ponto objetivo para avaliar o tamanho ótimo da amostra.Universidade Federal de Santa Maria2012-03-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsm.br/cienciaflorestal/article/view/508310.5902/198050985083Ciência Florestal; Vol. 22 No. 1 (2012); 101-111Ciência Florestal; v. 22 n. 1 (2012); 101-1111980-50980103-9954reponame:Ciência Florestal (Online)instname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMporhttps://periodicos.ufsm.br/cienciaflorestal/article/view/5083/3076Schilling, Ana CristinaBatista, João Luis FerreiraCouto, Hilton Zarate doinfo:eu-repo/semantics/openAccess2014-08-28T22:49:11Zoai:ojs.pkp.sfu.ca:article/5083Revistahttp://www.ufsm.br/cienciaflorestal/ONGhttps://old.scielo.br/oai/scielo-oai.php||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br1980-50980103-9954opendoar:2014-08-28T22:49:11Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)false
dc.title.none.fl_str_mv ABSENCE OF STABILIZATION POINT OF THE SPECIES ACCUMULATION CURVE IN TROPICAL FORESTS
Ausência de estabilização da curva de acumulação de espécies em florestas tropicais
title ABSENCE OF STABILIZATION POINT OF THE SPECIES ACCUMULATION CURVE IN TROPICAL FORESTS
spellingShingle ABSENCE OF STABILIZATION POINT OF THE SPECIES ACCUMULATION CURVE IN TROPICAL FORESTS
Schilling, Ana Cristina
phytosociology
sampling sufficiency
species-accumulation curve
curva de acumulação de espécies
fitossociologia
suficiência amostral
title_short ABSENCE OF STABILIZATION POINT OF THE SPECIES ACCUMULATION CURVE IN TROPICAL FORESTS
title_full ABSENCE OF STABILIZATION POINT OF THE SPECIES ACCUMULATION CURVE IN TROPICAL FORESTS
title_fullStr ABSENCE OF STABILIZATION POINT OF THE SPECIES ACCUMULATION CURVE IN TROPICAL FORESTS
title_full_unstemmed ABSENCE OF STABILIZATION POINT OF THE SPECIES ACCUMULATION CURVE IN TROPICAL FORESTS
title_sort ABSENCE OF STABILIZATION POINT OF THE SPECIES ACCUMULATION CURVE IN TROPICAL FORESTS
author Schilling, Ana Cristina
author_facet Schilling, Ana Cristina
Batista, João Luis Ferreira
Couto, Hilton Zarate do
author_role author
author2 Batista, João Luis Ferreira
Couto, Hilton Zarate do
author2_role author
author
dc.contributor.author.fl_str_mv Schilling, Ana Cristina
Batista, João Luis Ferreira
Couto, Hilton Zarate do
dc.subject.por.fl_str_mv phytosociology
sampling sufficiency
species-accumulation curve
curva de acumulação de espécies
fitossociologia
suficiência amostral
topic phytosociology
sampling sufficiency
species-accumulation curve
curva de acumulação de espécies
fitossociologia
suficiência amostral
description http://dx.doi.org/10.5902/198050985083The definition of the sample size is a major problem in studies of phytosociology. The species accumulation curve is used to define the sampling sufficiency, but this method presents some limitations such as the absence of a stabilization point that can be objectively determined and the arbitrariness of the order of sampling units in the curve. A solution to this problem is the use of randomization procedures, e.g. permutation, for obtaining a mean species accumulation curve and empiric confidence intervals. However, the randomization process emphasizes the asymptotical character of the curve. Moreover, the inexistence of an inflection point in the curve makes it impossible to define objectively the point of optimum sample size.
publishDate 2012
dc.date.none.fl_str_mv 2012-03-30
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.ufsm.br/cienciaflorestal/article/view/5083
10.5902/198050985083
url https://periodicos.ufsm.br/cienciaflorestal/article/view/5083
identifier_str_mv 10.5902/198050985083
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.ufsm.br/cienciaflorestal/article/view/5083/3076
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.publisher.none.fl_str_mv Universidade Federal de Santa Maria
publisher.none.fl_str_mv Universidade Federal de Santa Maria
dc.source.none.fl_str_mv Ciência Florestal; Vol. 22 No. 1 (2012); 101-111
Ciência Florestal; v. 22 n. 1 (2012); 101-111
1980-5098
0103-9954
reponame:Ciência Florestal (Online)
instname:Universidade Federal de Santa Maria (UFSM)
instacron:UFSM
instname_str Universidade Federal de Santa Maria (UFSM)
instacron_str UFSM
institution UFSM
reponame_str Ciência Florestal (Online)
collection Ciência Florestal (Online)
repository.name.fl_str_mv Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)
repository.mail.fl_str_mv ||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br
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