Abundance patterns (1984-1987 / 1994-1998) of polychaete worms (Annelida) from an estuarine tidal flat, Pacific, Costa Rica

The objectives of this report are to provide an updated list of the annelid polychaete worm species found at a tropical estuarine intertidal flat, describe long term oscillations of 11 of the species, and the impact of red tides as evidenced by PCA. From 1984 to 1987 (49 dates) 14 sediment cores (17...

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Autores: Vargas Zamora, José A., Sibaja Cordero, Jeffrey Alejandro, Dean, Harlan K., Solano Ulate, Sylvia Elena
Tipo de documento: artigo
Data de publicação:2015
País:Costa Rica
Recursos:Universidad de Costa Rica
Repositório:Kérwá
OAI Identifier:oai:kerwa.ucr.ac.cr:10669/75293
Acesso em linha:http://investiga.uned.ac.cr/revistas/index.php/cuadernos/article/view/1150/1107
https://hdl.handle.net/10669/75293
Access Level:Acceso aberto
Palavra-chave:Macrofauna
Infauna
Intertidal
Benthos
GAM
PCA
Red tides
Entre-mareas
Bentos
Mareas rojas
592.620 904 872 86 Polychaeta
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network_name_str Costa Rica
repository_id_str
dc.title.es_ES.fl_str_mv Abundance patterns (1984-1987 / 1994-1998) of polychaete worms (Annelida) from an estuarine tidal flat, Pacific, Costa Rica
title Abundance patterns (1984-1987 / 1994-1998) of polychaete worms (Annelida) from an estuarine tidal flat, Pacific, Costa Rica
spellingShingle Abundance patterns (1984-1987 / 1994-1998) of polychaete worms (Annelida) from an estuarine tidal flat, Pacific, Costa Rica
Vargas Zamora, José A.
Macrofauna
Infauna
Intertidal
Benthos
GAM
PCA
Red tides
Macrofauna
Infauna
Entre-mareas
Bentos
GAM
PCA
Mareas rojas
592.620 904 872 86 Polychaeta
title_short Abundance patterns (1984-1987 / 1994-1998) of polychaete worms (Annelida) from an estuarine tidal flat, Pacific, Costa Rica
title_full Abundance patterns (1984-1987 / 1994-1998) of polychaete worms (Annelida) from an estuarine tidal flat, Pacific, Costa Rica
title_fullStr Abundance patterns (1984-1987 / 1994-1998) of polychaete worms (Annelida) from an estuarine tidal flat, Pacific, Costa Rica
title_full_unstemmed Abundance patterns (1984-1987 / 1994-1998) of polychaete worms (Annelida) from an estuarine tidal flat, Pacific, Costa Rica
title_sort Abundance patterns (1984-1987 / 1994-1998) of polychaete worms (Annelida) from an estuarine tidal flat, Pacific, Costa Rica
dc.creator.none.fl_str_mv Vargas Zamora, José A.
Sibaja Cordero, Jeffrey Alejandro
Dean, Harlan K.
Solano Ulate, Sylvia Elena
author Vargas Zamora, José A.
author_facet Vargas Zamora, José A.
Sibaja Cordero, Jeffrey Alejandro
Dean, Harlan K.
Solano Ulate, Sylvia Elena
author_role author
author2 Sibaja Cordero, Jeffrey Alejandro
Dean, Harlan K.
Solano Ulate, Sylvia Elena
author2_role author
author
author
dc.subject.es_ES.fl_str_mv Macrofauna
Infauna
Intertidal
Benthos
GAM
PCA
Red tides
Macrofauna
Infauna
Entre-mareas
Bentos
GAM
PCA
Mareas rojas
592.620 904 872 86 Polychaeta
topic Macrofauna
Infauna
Intertidal
Benthos
GAM
PCA
Red tides
Macrofauna
Infauna
Entre-mareas
Bentos
GAM
PCA
Mareas rojas
592.620 904 872 86 Polychaeta
description The objectives of this report are to provide an updated list of the annelid polychaete worm species found at a tropical estuarine intertidal flat, describe long term oscillations of 11 of the species, and the impact of red tides as evidenced by PCA. From 1984 to 1987 (49 dates) 14 sediment cores (17.7 cm2 – 15 cm deep) were collected per date at low tide from a 400 m2 muddy-sand plot in the Gulf of Nicoya estuary (10o N-85o W), Pacific, Costa Rica. All cores were fixed in Rose Bengal stained formalin and sieved thru a 500 micron mesh screen. A total of 43 species of polychaetes were found and distributed among 25 families and 6600 individuals, of which 80% were represented by: Mediomastus californiensis (32.4%), Caraziella calafia (20.3%), Paraprionospio alata (9.2%), Scolotema tetraura (5.9%), Gymnonereis crosslandi (4.9%), Spiophanex duplex (3.8%), and Glycinde armigera (3.5%). M. californiensis was numerically dominant during most of the sampling dates. The Spionidae (6), Phyllodocidae (4), and Nereididae (3) were the more speciose polychaete families. Populations of all species were patchy in space and time. The abundance patterns of 11 species are illustrated for the 1984-1987 data set. These patterns may reflect declining populations at the beginning of 1984 perhaps influenced by the strong 1982-1983 ENSO event. During 1985 red tides may have influenced the abundances of polychaetes as indicated by the results of a PCA. This is the first time that population patterns of nine species of intertidal polychaetes over a three year period, and the impact of red tides on these worms are reported for this region of the eastern Pacific. General Additive Models (GAM) were applied to the abundances of M. californiensis and P. alata found during 1984-1987 and to additional data from 1994 to 1996 (28 dates) The GAM approach confirmed ealier observations of seasonal oscillations of these species during 1984- 1987, but these trends were not found during 1994-1998. Previously unnoticed underlying patterns of unknown origin were also detected by the application of GAM. The theoretical framework needed for the interpretation of results from tropical benthic surveys could improve significantly from more long term monitoring. Long term abundance data is essential to evaluate the impacts of anthropogenic activities in estuaries.
publishDate 2015
dc.date.issued.none.fl_str_mv 2015-12
dc.date.accessioned.none.fl_str_mv 2018-07-27T14:29:33Z
dc.date.available.none.fl_str_mv 2018-07-27T14:29:33Z
dc.type.none.fl_str_mv artículo original
http://purl.org/coar/resource_type/c_2df8fbb1
info:eu-repo/semantics/article
format article
dc.identifier.citation.none.fl_str_mv http://investiga.uned.ac.cr/revistas/index.php/cuadernos/article/view/1150/1107
dc.identifier.issn.none.fl_str_mv 1659-4266
dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/10669/75293
dc.identifier.doi.none.fl_str_mv 10.22458/urj.v7i2.1150
dc.identifier.codproyecto.none.fl_str_mv 808-B3-113
url http://investiga.uned.ac.cr/revistas/index.php/cuadernos/article/view/1150/1107
https://hdl.handle.net/10669/75293
identifier_str_mv 1659-4266
10.22458/urj.v7i2.1150
808-B3-113
dc.language.iso.es_ES.fl_str_mv en_US
language_invalid_str_mv en_US
dc.rights.none.fl_str_mv acceso abierto
http://purl.org/coar/access_right/c_abf2
info:eu-repo/semantics/openAccess
rights_invalid_str_mv acceso abierto
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.source.es_ES.fl_str_mv Cuadernos de Investigación UNED,vol 7(2),pp.233-248
dc.source.none.fl_str_mv reponame:Kérwá
instname:Universidad de Costa Rica
instacron:UCR
instname_str Universidad de Costa Rica
instacron_str UCR
institution UCR
reponame_str Kérwá
collection Kérwá
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spelling Vargas Zamora, José A.009e0e8f-d3e0-4c4b-be4e-d81841d6715e600Sibaja Cordero, Jeffrey Alejandroafbcc3fc-1d8e-4467-b80e-e583bd710459600Dean, Harlan K.960e407d-61f3-47d6-8d8c-bbc2f6e5c8cb600Solano Ulate, Sylvia Elena6f4a687c-0e6f-4897-adca-0bef7025ef726002018-07-27T14:29:33Z2018-07-27T14:29:33Z2015-12http://investiga.uned.ac.cr/revistas/index.php/cuadernos/article/view/1150/11071659-4266https://hdl.handle.net/10669/7529310.22458/urj.v7i2.1150808-B3-113The objectives of this report are to provide an updated list of the annelid polychaete worm species found at a tropical estuarine intertidal flat, describe long term oscillations of 11 of the species, and the impact of red tides as evidenced by PCA. From 1984 to 1987 (49 dates) 14 sediment cores (17.7 cm2 – 15 cm deep) were collected per date at low tide from a 400 m2 muddy-sand plot in the Gulf of Nicoya estuary (10o N-85o W), Pacific, Costa Rica. All cores were fixed in Rose Bengal stained formalin and sieved thru a 500 micron mesh screen. A total of 43 species of polychaetes were found and distributed among 25 families and 6600 individuals, of which 80% were represented by: Mediomastus californiensis (32.4%), Caraziella calafia (20.3%), Paraprionospio alata (9.2%), Scolotema tetraura (5.9%), Gymnonereis crosslandi (4.9%), Spiophanex duplex (3.8%), and Glycinde armigera (3.5%). M. californiensis was numerically dominant during most of the sampling dates. The Spionidae (6), Phyllodocidae (4), and Nereididae (3) were the more speciose polychaete families. Populations of all species were patchy in space and time. The abundance patterns of 11 species are illustrated for the 1984-1987 data set. These patterns may reflect declining populations at the beginning of 1984 perhaps influenced by the strong 1982-1983 ENSO event. During 1985 red tides may have influenced the abundances of polychaetes as indicated by the results of a PCA. This is the first time that population patterns of nine species of intertidal polychaetes over a three year period, and the impact of red tides on these worms are reported for this region of the eastern Pacific. General Additive Models (GAM) were applied to the abundances of M. californiensis and P. alata found during 1984-1987 and to additional data from 1994 to 1996 (28 dates) The GAM approach confirmed ealier observations of seasonal oscillations of these species during 1984- 1987, but these trends were not found during 1994-1998. Previously unnoticed underlying patterns of unknown origin were also detected by the application of GAM. The theoretical framework needed for the interpretation of results from tropical benthic surveys could improve significantly from more long term monitoring. Long term abundance data is essential to evaluate the impacts of anthropogenic activities in estuaries.Los objetivos de este estudio fueron el proveer una lista actualizada de las especies de gusanos anélidos poliquetos encontrados en una planicie tropical de entre-mareas, describir oscilaciones de largo plazo de 11 de esas especies y el impacto de mareas rojas evidenciadas por el análisis de PCA. Desde 1984 a 1987 (49 fechas) 14 núcleos de sedimento (17.7 cm2 –15 cm de profundidad) fueron colectados por fecha en marea baja en un sitio fangoso-arenoso de 400 m2 en el estuario del Golfo de Nicoya (10o N-85o W), Pacifico, Costa Rica. Todos los núcleos fueron fijados en formalina en agua de mar tenida con Rosa de Bengala y tamizados en una malla de 500 micras de poro. Se encontró un total de 43 especies de gusanos poliquetos distribuidos entre 25 familias y 6600 individuos, de los que un 80% estaban representados por: Mediomastus californiensis (32.4%), Caraziella calafia (20.3%), Paraprionospio alata (9.2%), Scolotema tetraura (5.9%), Gymnonereis crosslandi (4.9%), Spiophanex duplex (3.8%) y Glycinde armigera (3.5%). M. californiensis fue numéricamente dominante durante la mayoria de las fechas de muestreo. Las Spionidae (6), Phyllodocidae (4), y Nereididae (3) fueron las familias de poliquetos con más especies. Las poblaciones de todas las especies fueron irregulares en el tiempo y en el espacio. Se ilustran los patrones de abundancia de 11 de las especies para el periodo 1984-1987. Estos patrones pueden reflejar poblaciones en decadencia al inicio de 1984, tal vez influenciadas por el fuerte evento ENSO de 1982-1983. Durante 1985 las mareas rojas pueden haber influenciado las abundancias de poliquetos según lo indican los resultados de un PCA. Esta es la primera vez para el Pacífico del Este que se ilustran las oscilaciones poblacionales de nueve especies de poliquetos de entre mareas a lo largo de un período de tres años, así como el impacto de las mareas rojas en estos gusanos. Se aplicó el análisis por Modelos Aditivos Generales (GAM) a las abundancias de M. californiensis y P. alata recolectados durante 1984-1987 y adicionalmente entre 1994 y 1996 (28 fechas). El enfoque GAM confirmó las observaciones anteriores sobre la estacionalidad de estas especies durante 1984-1987, pero estas tendencias no fueron encontradas durante 1994-1998. Mediante el uso de GAM fueron también detectados patrones de origen desconocido no notados anteriormente. El marco teórico necesario para la interpretación de los resultados de estudios bénticos tropicales puede mejorarse mediante la realización de más monitoreos a largo plazo. Datos de abundancia de largo plazo son esenciales para evaluar los impactos de actividades antropogénicas en estuarios.Universidad de Costa Rica/[808-B3-113]/UCR/Costa RicaUCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro de Investigación en Ciencias del Mar y Limnología (CIMAR)UCR::Vicerrectoría de Docencia::Ciencias Básicas::Sistema de Educación General::Escuela de Estudios GeneralesUCR::Vicerrectoría de Docencia::Ciencias Básicas::Facultad de Ciencias::Escuela de Biologíaen_USacceso abiertohttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessCuadernos de Investigación UNED,vol 7(2),pp.233-248reponame:Kérwáinstname:Universidad de Costa Ricainstacron:UCRMacrofaunaInfaunaIntertidalBenthosGAMPCARed tidesMacrofaunaInfaunaEntre-mareasBentosGAMPCAMareas rojas592.620 904 872 86 PolychaetaAbundance patterns (1984-1987 / 1994-1998) of polychaete worms (Annelida) from an estuarine tidal flat, Pacific, Costa Ricaartículo originalhttp://purl.org/coar/resource_type/c_2df8fbb1info:eu-repo/semantics/articleLICENSElicense.txtlicense.txttext/plain; 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