AUSÊNCIA DE ESTABILIZAÇÃO DA CURVA DE ACUMULAÇÃO DE ESPÉCIES EM FLORESTAS TROPICAIS

The 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 arbitrarines...

Full description

Bibliographic Details
Main Authors: Ana Cristina Schilling, João Luis Ferreira Batista, Hilton Zarate do Couto
Format: Article
Language:Portuguese
Published: Universidade Federal de Santa Maria 2012-01-01
Series:Ciência Florestal
Online Access:http://www.redalyc.org/articulo.oa?id=53423372010
_version_ 1818480550730530816
author Ana Cristina Schilling
João Luis Ferreira Batista
Hilton Zarate do Couto
author_facet Ana Cristina Schilling
João Luis Ferreira Batista
Hilton Zarate do Couto
author_sort Ana Cristina Schilling
collection DOAJ
description The 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.
first_indexed 2024-12-10T11:25:11Z
format Article
id doaj.art-c5b1f50fd10b44eb98c98a2b95b1c776
institution Directory Open Access Journal
issn 0103-9954
1980-5098
language Portuguese
last_indexed 2024-12-10T11:25:11Z
publishDate 2012-01-01
publisher Universidade Federal de Santa Maria
record_format Article
series Ciência Florestal
spelling doaj.art-c5b1f50fd10b44eb98c98a2b95b1c7762022-12-22T01:50:47ZporUniversidade Federal de Santa MariaCiência Florestal0103-99541980-50982012-01-01221101111AUSÊNCIA DE ESTABILIZAÇÃO DA CURVA DE ACUMULAÇÃO DE ESPÉCIES EM FLORESTAS TROPICAISAna Cristina SchillingJoão Luis Ferreira BatistaHilton Zarate do CoutoThe 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://www.redalyc.org/articulo.oa?id=53423372010
spellingShingle Ana Cristina Schilling
João Luis Ferreira Batista
Hilton Zarate do Couto
AUSÊNCIA DE ESTABILIZAÇÃO DA CURVA DE ACUMULAÇÃO DE ESPÉCIES EM FLORESTAS TROPICAIS
Ciência Florestal
title AUSÊNCIA DE ESTABILIZAÇÃO DA CURVA DE ACUMULAÇÃO DE ESPÉCIES EM FLORESTAS TROPICAIS
title_full AUSÊNCIA DE ESTABILIZAÇÃO DA CURVA DE ACUMULAÇÃO DE ESPÉCIES EM FLORESTAS TROPICAIS
title_fullStr AUSÊNCIA DE ESTABILIZAÇÃO DA CURVA DE ACUMULAÇÃO DE ESPÉCIES EM FLORESTAS TROPICAIS
title_full_unstemmed AUSÊNCIA DE ESTABILIZAÇÃO DA CURVA DE ACUMULAÇÃO DE ESPÉCIES EM FLORESTAS TROPICAIS
title_short AUSÊNCIA DE ESTABILIZAÇÃO DA CURVA DE ACUMULAÇÃO DE ESPÉCIES EM FLORESTAS TROPICAIS
title_sort ausencia de estabilizacao da curva de acumulacao de especies em florestas tropicais
url http://www.redalyc.org/articulo.oa?id=53423372010
work_keys_str_mv AT anacristinaschilling ausenciadeestabilizacaodacurvadeacumulacaodeespeciesemflorestastropicais
AT joaoluisferreirabatista ausenciadeestabilizacaodacurvadeacumulacaodeespeciesemflorestastropicais
AT hiltonzaratedocouto ausenciadeestabilizacaodacurvadeacumulacaodeespeciesemflorestastropicais