Seasonal abundance of the demersal copepod Pseudodiaptomus cokeri (Calanoidea: Pseudodiaptomidae) in a Caribbean estuarine environment

Seasonal abundance variations of the demersal copepod Pseudodiaptomus cokeri were examinated at three locations (center, north shore and south shore) in Phosphorescent Bay, Puerto Rico, throughout an annual cycle. Nocturnal oblique tows ( 2 1 :00-2 3 :00 hr) were taken biweeldy (three replicates) at...

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Main Author:	Ríos Jara, Eduardo
Format:	Online
Language:	eng
Published:	Universidad de Costa Rica 1998
Online Access:	https://revistas.ucr.ac.cr/index.php/rbt/article/view/20129

id	RBT20129
record_format	ojs
spelling	RBT201292022-05-25T20:59:13Z Seasonal abundance of the demersal copepod Pseudodiaptomus cokeri (Calanoidea: Pseudodiaptomidae) in a Caribbean estuarine environment Seasonal abundance of the demersal copepod Pseudodiaptomus cokeri (Calanoidea: Pseudodiaptomidae) in a Caribbean estuarine environment Ríos Jara, Eduardo Seasonal abundance variations of the demersal copepod Pseudodiaptomus cokeri were examinated at three locations (center, north shore and south shore) in Phosphorescent Bay, Puerto Rico, throughout an annual cycle. Nocturnal oblique tows ( 2 1 :00-2 3 :00 hr) were taken biweeldy (three replicates) at each location with a coDicaI net (mouth diamcter = 0.5 m; mesh size = 1 35 11m) and a standard calibrated flowmeter. Water temperature and salinity measurements were taken at the surface and near the bottom in each location before towing activities using a SCT meter. o Chlorophyll-a concentrations were fluorometricaIly determined. The adult and copepodite stages of this species accountcld for approximately 1 .6% of the annual mean total zooplankton abundance of the bayo Higher abundance of P. cokeri (mean:l:l SD = 4 1 9 1 :!: 1 444 iÍldividuals m-3) was associated with Seasonal abundance variations of the demersal copepod Pseudodiaptomus cokeri were examinated at three locations (center, north shore and south shore) in Phosphorescent Bay, Puerto Rico, throughout an annual cycle. Nocturnal oblique tows ( 2 1 :00-2 3 :00 hr) were taken biweeldy (three replicates) at each location with a coDicaI net (mouth diamcter = 0.5 m; mesh size = 1 35 11m) and a standard calibrated flowmeter. Water temperature and salinity measurements were taken at the surface and near the bottom in each location before towing activities using a SCT meter. o Chlorophyll-a concentrations were fluorometricaIly determined. The adult and copepodite stages of this species accountcld for approximately 1 .6% of the annual mean total zooplankton abundance of the bayo Higher abundance of P. cokeri (mean:l:l SD = 4 1 9 1 :!: 1 444 iÍldividuals m-3) was associated with ool water temperatures and dry conditions (cooVdry season) which prevailed betw'een December and March relative to the period between April and November (wann/wet seasón) with lower abundance. F1uctuations of this population followed progressive increments in chlorophyll- a concentrations at the three sampling statigns (One-way ANOVA) Universidad de Costa Rica 1998-09-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article application/pdf https://revistas.ucr.ac.cr/index.php/rbt/article/view/20129 10.15517/rbt.v46i3.20129 Revista de Biología Tropical; Vol. 46 No. 3 (1998): Volume 46 – Regular number 3 – September 1998; 661–672 Revista de Biología Tropical; Vol. 46 Núm. 3 (1998): Volumen 46 – Volumen regular 3 – Setiembre 1998; 661–672 Revista Biología Tropical; Vol. 46 N.º 3 (1998): Volume 46 – Regular number 3 – September 1998; 661–672 2215-2075 0034-7744 10.15517/rbt.v46i3 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/20129/20329 Copyright (c) 1998 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0
institution	Universidad de Costa Rica
collection	Revista de Biología Tropical
language	eng
format	Online
author	Ríos Jara, Eduardo
spellingShingle	Ríos Jara, Eduardo Seasonal abundance of the demersal copepod Pseudodiaptomus cokeri (Calanoidea: Pseudodiaptomidae) in a Caribbean estuarine environment
author_facet	Ríos Jara, Eduardo
author_sort	Ríos Jara, Eduardo
description	Seasonal abundance variations of the demersal copepod Pseudodiaptomus cokeri were examinated at three locations (center, north shore and south shore) in Phosphorescent Bay, Puerto Rico, throughout an annual cycle. Nocturnal oblique tows ( 2 1 :00-2 3 :00 hr) were taken biweeldy (three replicates) at each location with a coDicaI net (mouth diamcter = 0.5 m; mesh size = 1 35 11m) and a standard calibrated flowmeter. Water temperature and salinity measurements were taken at the surface and near the bottom in each location before towing activities using a SCT meter. o Chlorophyll-a concentrations were fluorometricaIly determined. The adult and copepodite stages of this species accountcld for approximately 1 .6% of the annual mean total zooplankton abundance of the bayo Higher abundance of P. cokeri (mean:l:l SD = 4 1 9 1 :!: 1 444 iÍldividuals m-3) was associated with ool water temperatures and dry conditions (cooVdry season) which prevailed betw'een December and March relative to the period between April and November (wann/wet seasón) with lower abundance. F1uctuations of this population followed progressive increments in chlorophyll- a concentrations at the three sampling statigns (One-way ANOVA)
title	Seasonal abundance of the demersal copepod Pseudodiaptomus cokeri (Calanoidea: Pseudodiaptomidae) in a Caribbean estuarine environment
title_short	Seasonal abundance of the demersal copepod Pseudodiaptomus cokeri (Calanoidea: Pseudodiaptomidae) in a Caribbean estuarine environment
title_full	Seasonal abundance of the demersal copepod Pseudodiaptomus cokeri (Calanoidea: Pseudodiaptomidae) in a Caribbean estuarine environment
title_fullStr	Seasonal abundance of the demersal copepod Pseudodiaptomus cokeri (Calanoidea: Pseudodiaptomidae) in a Caribbean estuarine environment
title_full_unstemmed	Seasonal abundance of the demersal copepod Pseudodiaptomus cokeri (Calanoidea: Pseudodiaptomidae) in a Caribbean estuarine environment
title_sort	seasonal abundance of the demersal copepod pseudodiaptomus cokeri (calanoidea: pseudodiaptomidae) in a caribbean estuarine environment
title_alt	Seasonal abundance of the demersal copepod Pseudodiaptomus cokeri (Calanoidea: Pseudodiaptomidae) in a Caribbean estuarine environment
publisher	Universidad de Costa Rica
publishDate	1998
url	https://revistas.ucr.ac.cr/index.php/rbt/article/view/20129
work_keys_str_mv	AT riosjaraeduardo seasonalabundanceofthedemersalcopepodpseudodiaptomuscokericalanoideapseudodiaptomidaeinacaribbeanestuarineenvironment
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Seasonal abundance of the demersal copepod Pseudodiaptomus cokeri (Calanoidea: Pseudodiaptomidae) in a Caribbean estuarine environment

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