Testing for stationary dynamics in the Barro Colorado Island forest

Autores
Cavagna, Andrea; Fort, Hugo; Grigera, Tomás Sebastián
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We analyse population dynamics in Barro Colorado Island (Panama) using census data of a 50 ha forest plot spanning 35 years, and address the question whether this community is in a stationary state. Individual species abundances show large fluctuations, but assessing stationariety requires discriminating random fluctuations from actual trends. This requires evaluating mean quantities as well as the structure (i.e. the correlations) of the fluctuations around this mean. We argue that a species average is the best surrogate for the theoretically required but unfeasible history average. We define the overlap, a species-averaged measure of composition similarity, which reveals that the BCI population dynamics is stationary but not static, displaying fluctuations with a characteristic time of around 15 years, two orders of magnitude less than previously estimated.
Instituto de Física de Líquidos y Sistemas Biológicos
Materia
Física
Ecología
Rainforest
Ecosystem dynamics
Fluctuations
Time correlations
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/159775
Acceder
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network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Testing for stationary dynamics in the Barro Colorado Island forestCavagna, AndreaFort, HugoGrigera, Tomás SebastiánFísicaEcologíaRainforestEcosystem dynamicsFluctuationsTime correlationsWe analyse population dynamics in Barro Colorado Island (Panama) using census data of a 50 ha forest plot spanning 35 years, and address the question whether this community is in a stationary state. Individual species abundances show large fluctuations, but assessing stationariety requires discriminating random fluctuations from actual trends. This requires evaluating mean quantities as well as the structure (i.e. the correlations) of the fluctuations around this mean. We argue that a species average is the best surrogate for the theoretically required but unfeasible history average. We define the overlap, a species-averaged measure of composition similarity, which reveals that the BCI population dynamics is stationary but not static, displaying fluctuations with a characteristic time of around 15 years, two orders of magnitude less than previously estimated.Instituto de Física de Líquidos y Sistemas Biológicos2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/159775enginfo:eu-repo/semantics/altIdentifier/issn/1470-160Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.ecolind.2023.109880info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T17:22:42Zoai:sedici.unlp.edu.ar:10915/159775Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:22:43.198SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Testing for stationary dynamics in the Barro Colorado Island forest
title Testing for stationary dynamics in the Barro Colorado Island forest
spellingShingle Testing for stationary dynamics in the Barro Colorado Island forest
Cavagna, Andrea
Física
Ecología
Rainforest
Ecosystem dynamics
Fluctuations
Time correlations
title_short Testing for stationary dynamics in the Barro Colorado Island forest
title_full Testing for stationary dynamics in the Barro Colorado Island forest
title_fullStr Testing for stationary dynamics in the Barro Colorado Island forest
title_full_unstemmed Testing for stationary dynamics in the Barro Colorado Island forest
title_sort Testing for stationary dynamics in the Barro Colorado Island forest
dc.creator.none.fl_str_mv Cavagna, Andrea
Fort, Hugo
Grigera, Tomás Sebastián
author Cavagna, Andrea
author_facet Cavagna, Andrea
Fort, Hugo
Grigera, Tomás Sebastián
author_role author
author2 Fort, Hugo
Grigera, Tomás Sebastián
author2_role author
author
dc.subject.none.fl_str_mv Física
Ecología
Rainforest
Ecosystem dynamics
Fluctuations
Time correlations
topic Física
Ecología
Rainforest
Ecosystem dynamics
Fluctuations
Time correlations
dc.description.none.fl_txt_mv We analyse population dynamics in Barro Colorado Island (Panama) using census data of a 50 ha forest plot spanning 35 years, and address the question whether this community is in a stationary state. Individual species abundances show large fluctuations, but assessing stationariety requires discriminating random fluctuations from actual trends. This requires evaluating mean quantities as well as the structure (i.e. the correlations) of the fluctuations around this mean. We argue that a species average is the best surrogate for the theoretically required but unfeasible history average. We define the overlap, a species-averaged measure of composition similarity, which reveals that the BCI population dynamics is stationary but not static, displaying fluctuations with a characteristic time of around 15 years, two orders of magnitude less than previously estimated.
Instituto de Física de Líquidos y Sistemas Biológicos
description We analyse population dynamics in Barro Colorado Island (Panama) using census data of a 50 ha forest plot spanning 35 years, and address the question whether this community is in a stationary state. Individual species abundances show large fluctuations, but assessing stationariety requires discriminating random fluctuations from actual trends. This requires evaluating mean quantities as well as the structure (i.e. the correlations) of the fluctuations around this mean. We argue that a species average is the best surrogate for the theoretically required but unfeasible history average. We define the overlap, a species-averaged measure of composition similarity, which reveals that the BCI population dynamics is stationary but not static, displaying fluctuations with a characteristic time of around 15 years, two orders of magnitude less than previously estimated.
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/159775
url http://sedici.unlp.edu.ar/handle/10915/159775
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1470-160X
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ecolind.2023.109880
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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