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Dynamics of the Acartia genus (Calanoida: Copepoda) in a temperate shallow estuary (the Mondego estuary) on the western coast of Portugal

Croatian International Relations Review

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Title Dynamics of the Acartia genus (Calanoida: Copepoda) in a temperate shallow estuary (the Mondego estuary) on the western coast of Portugal
Dinamika roda Acartia (Calanoida: Copepoda) u temperiranom plitkom estuariju (ušće rijeke Mondego) na zapadnoj obali Portugala
 
Creator Azeiterio, Ulisses Miranda
Maques, Sónia Cotrim
Viera, Luís Miguel Russo
Pastorinho, Manuel Ramiro Dias
Ré, Pedro Alfaia Barcia
Pereira, Mário Jorge
Morgado, Fernando Manuel Raposo
 
Subject estuaries; Mondego estuary; Copepoda; Acartia; ecology
estuarij; kopepodi; Acartia; ekologija
 
Description The purpose of this work was to review the dynamics of the Acartia species in the Mondego estuary (a temperate North-Atlantic shallow estuary in Western Portugal) in a genus integrated perspective. The Acartia genus is represented in the system by the species Acartia clausi and Acartia tonsa; the samples were taken between July 1999 and June 2000, with 63 and 125 µm mesh size nets, and between January 2003 and January 2004, with a 335 µm mesh size net, in the downstream and upstream areas of the estuary. Significant differences in abundance were found between months and sampling stations for the two species (ANOVA, P < 0.05). A. clausi dominated in the downstream estuary, registering peaks in June (156 ind. m-3) and September (73 ind. m-3); in the upstream estuary this species showed a maximum of density in September (35 ind. m-3). A. tonsa dominated in the upstream estuary with peaks of abundance occurring in December (2372 ind. m-3) and October (1056 ind. m-3) in the downstream estuary this species exhibited higher abundance in August (52 ind. m-3). The two species of the genus coexist in time exhibiting a strong spatial segregation behavior in the estuary.
Cilj ovog rada je dati pregled dinamike vrsta Acartia u estuariju Mondego (temperirani sjevernoatlantski plitki estuarij u zapadnom Portugalu) za sve nađene vrste toga roda. Rod Acartia je prisutan s tri vrste: Acartia clausi, Acartia bifilosa var. inermis i Acartia tonsa; uzorci uzeti od srpnja 1999 do lipnja 2000 su dobiveni pomoću mreže veličine oka 63 i 125 µm, a od siječnja 2003 do siječnja 2004 pomoću mreže veličine oka 335 µm, u nizvodnom i uzvodnom dijelu estuarija. Nađene su znatne razlike u abundanciji dviju vrsta (ANOVA, P < 0.05). A. clausi je bila dominantna u nizvodnom estuariju s maksimumom u lipnju (156 ind. m -3) i rujnu (73 ind. m-3); u uzvodnom estuariju ova vrsta je imala maksimum gustoće u rujnu (35 ind. m-3). A. tonsa je bila dominantna u uzvodnom estuariju s makmimumom gustoće u prosincu (2372 ind. m-3) i listopadu (1056 ind. m-3). U nizvodnom estuariju ova je vrsta bila obilatije zastupljena u rujnu (52 ind. m-3). Dvije vrste se u estuariju javljaju istovremeno, ali su prostorno izrazito odijeljene
 
Publisher Institute of Oceanography and Fisheries
 
Date 2005-06-01
 
Type text
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
 
Format application/pdf
 
Identifier http://hrcak.srce.hr/74
http://hrcak.srce.hr/file/88
 
Source Acta Adriatica; Vol.46 No.1; ISSN 0001-5113 (Print); ISSN 1846-0453 (Online)
 
Language en
 
Rights info:eu-repo/semantics/openAccess