Wind effect as forcing factor controlling distribution and diversity of copepods in a shallow temperate estuary (Solis Grande, Uruguay)

Gómez-Erache, M.; Norbis, Walter; Bastreri, Daniel

doi:10.3989/scimar.2000.64n187

Cited by 18 publications

(10 citation statements)

References 33 publications

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“…Alguns trabalhos realizados em outras zonas litorâneas identifi caram também o efeito do vento (Gómez-Erache et al 2000), infl uência da maré (Villate 1997), pressão atmosférica, temperatura da água (Licandro & Ibanez 2000) e sazonalidade (Khalil & El-Rahman 1997;Villa et al 1997;Totti et al 2000) controlando a distribuição e composição das comunidades do plâncton.…”

Section: Discussionunclassified

Variação temporal do fitoplâncton em três praias urbanas do litoral sul do estado de Pernambuco, Nordeste do Brasil

et al. 2010

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RESUMO -(Variação temporal do fi toplâncton em três praias urbanas do litoral Sul de Pernambuco, Nordeste do Brasil). Este trabalho teve como objetivo efetuar uma análise comparativa da estrutura da comunidade fi toplanctônica, variação da biomassa e dados ambientais, na zona de arrebentação das praias arenosas de Brasília Formosa (8º04'S; 34º52'W), Boa Viagem (8º07'S; 34º53'W) e Piedade (8º10'S; 34º54 'W) ) no período de estiagem. A morfologia e o hidrodinamismo dos ambientes de praia analisados não favoreceram a formação de manchas por acumulação de microalgas. Palavras-chave: praias arenosas, zona de arrebentação, clorofi la a, diatomáceas, Asterionellopsis glacialis ABSTRACT -(Phytoplankton temporal variation on three urban beaches of Pernambuco's South coast, Brazilian Northeast). This study aimed to make a comparative analysis of phytoplankton community structure, biomass variation and environmental data in the surf-zone of Brasilia Formosa (8º04'S; 34º52'W), Boa Viagem (8º07'S; 34º53'W) and Piedade (8º10'S; 34º54'W) sandy beaches, on the Pernambuco coast. Bottle and net samples were collected during the rainy season (May, June and July/2005) and the dry season (November, December/2005 and January/2006) with simultaneous environmental data collection (water temperature, salinity, suspended material, nitrite, nitrate, phosphate, silicate, rainfall, wind speed and direction). Among the 119 infrageneric taxa identifi ed, diatoms were the most representative group regarding abundance and frequency, notably Asterionellopsis glacialis ( ) in the dry season. Morphology and hydrodynamics were unfavorable to the formation of microalgae patches.

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Section: Discussionunclassified

Variação temporal do fitoplâncton em três praias urbanas do litoral sul do estado de Pernambuco, Nordeste do Brasil

et al. 2010

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“…Due to this, the study area showed low diversity values (in general, lower than 3.0 bits.ind -1 ) and equitability (generally lower than 0.5). Environmental variability was the principal factor influencing the lowest diversity values in the Solís Grande estuary (Gómez-Erache et al, 2000) in copepod organisms (lower than 1.5) and on the south coast of Portugal (Villa et al, 1997), in phytoplankton and zooplankton communities (lower than 1.8). At Casa Caiada and Rio Doce beaches, the copepods were the most representative group, Oithona hebes, Parvocalanus crassirostris and Euterpina acutifrons being the most abundant and frequent species.…”

Section: Discussionmentioning

confidence: 99%

“…In Pernambuco, the distribution of plankton is regulated mainly by eutrophication, river discharges, hydrology, tidal stage, precipitation and grazing (Paranaguá, 1985/86, NeumannLeitão et al, 1991/93 and Eskinazi et al, 1997. Some research done in other coastal zones have identified the role of wind effects (Gómez-Erache et al, 2000), tidal influence (Villate, 1997), atmospheric pressure, current speed and direction, water temperature (Licandro and Ibanez, 2000) and seasonal changes (Khalil and El-Rahman, 1997;Villa et al, 1997 andTotti et al, 2000) to control the distribution and composition of plankton communities. In the study area, the observed distribution pattern was mainly conditioned by precipitation and evaporation rates, nutrient concentrations, temperature, salinity and tidal stage patterns.…”

Section: Discussionmentioning

confidence: 99%

Effect of coastline properties and wastewater on plankton composition and distribution in a stressed environment on the north coast of Olinda-PE (Brazil)

Pereira

Jiménez

Koening

et al. 2005

Braz. arch. biol. technol.

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A study of the structure of the plankton community along the coastal zone of the Casa Caiada-Rio Doce area (Pernambuco, Brazil) is presented. The results obtained indicated that in the protected zones the water presented high turbidity, high temperature, low salinity and high nutrient and oxygen rates. All of these conditions were responsible for the reduction in plankton diversity and an increase in the biomass of the most opportunistic (rstrategist) species e.g. Gyrosigma balticum and Bacillaria paxillifera (Phytoplankton) and Euterpina acutifrons (Zooplankton). The differences found with respect to others area studies performed in pristine conditions indicated that plankton structure could be used as an environmental health indicator and that, in this specific area, it was indicative of a poor quality coastal environment.

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“…The species is nevertheless distributed preferentially in estuarine and coastal areas (Paffenhöfer and Stearns 1988;Tester and Turner 1991) and is one of the most prominent in the estuaries of the Atlantic coast of South America, being present year-round, but exhibiting major seasonal fluctuations in population density (Gómez-Erache et al 2000;Costa et al 2009). Despite being considered a euryhaline and eurythermal species, capable of tolerating salinity levels ranging from 0 to 31.5 (Montú and Gloeden 1986), optimal salinity for A. tonsa is considered to be between 15 and 22 (Cervetto et al 1999); although in the present study, the greatest abundance was recorded at a salinity of 11.…”

Section: Discussionmentioning

confidence: 99%

Relationships between copepod community structure, rainfall regimes, and hydrological variables in a tropical mangrove estuary (Amazon coast, Brazil)

2015

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The influence of rainfall and hydrological variables on the abundance and diversity of the copepod community was investigated on a monthly basis over an annual cycle in the Taperaçu mangrove estuary. In general, the results show that there were no clear spatial or tidal patterns in any biological variables during the study period, which was related to the reduced horizontal gradient in abiotic parameters, determined mainly by the morphological and morphodynamic features of the estuary. Nevertheless, seasonal and monthly trends were recorded in both the hydrological data and the abundance of the dominant copepod species. In particular, Pseudodiaptomus marshi (6,004.6 ± 22,231.6 ind m -3 ; F = 5.0, p \ 0.05) and Acartia tonsa (905.6 ± 2,400.9 ind m -3 ; F = 14.6, p \ 0.001) predominated during the rainy season, whereas Acartia lilljeborgii (750.8 ± 808.3 ind m -3 ; U = 413.0, p \ 0.01) was the most abundant species in the dry season. A distinct process of succession was observed in the relative abundance of these species, driven by the shift in the rainfall regime, which affected hydrological, in particular salinity, and consequently the abundance of copepod species. We suggest that this may be a general pattern governing the dynamics of copepod populations in the estuaries of the Brazilian Amazonian region.

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Wind effect as forcing factor controlling distribution and diversity of copepods in a shallow temperate estuary (Solis Grande, Uruguay)

Cited by 18 publications

References 33 publications

Variação temporal do fitoplâncton em três praias urbanas do litoral sul do estado de Pernambuco, Nordeste do Brasil

Variação temporal do fitoplâncton em três praias urbanas do litoral sul do estado de Pernambuco, Nordeste do Brasil

Effect of coastline properties and wastewater on plankton composition and distribution in a stressed environment on the north coast of Olinda-PE (Brazil)

Relationships between copepod community structure, rainfall regimes, and hydrological variables in a tropical mangrove estuary (Amazon coast, Brazil)

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