The Ichthyofauna and Abiotic Hydrological Environment of the Ria de Aveiro, Portugal

Rebelo, José

doi:10.2307/1352787

Cited by 41 publications

(25 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Turbidity (± 0.1 m) and depth (± 0.1 m) were measured with a Secchi disc after fish samplings at low tide of spring tides. This sampling protocol is consistent with previous surveys within the area (Rebelo, 1992;Pombo et al, 2002a).…”

Section: Discussionsupporting

confidence: 88%

“…Measurements of temperature (± 0.1ºC) and dissolved oxygen (± 0.01 mg.l -1 ) were taken with an oxygen meter (Consort Z621), salinity (± 0.1) with a refractometer (Atago), and pH (± 0.01) with a pH meter (WTW 330/set -2). These parameters were only recorded at the water surface since preliminary fieldwork had shown that water column differences were not significant (Rebelo, 1992). Turbidity (± 0.1 m) and depth (± 0.1 m) were measured with a Secchi disc after fish samplings at low tide of spring tides.…”

Section: Discussionmentioning

confidence: 99%

“…The particular abiotic attributes of the Ria de Aveiro lagoon-shallowness, high turbidity, nature of the substrate, temperature, salinity and oxygenare associated with its high biotic productivity and offer excellent conditions for colonisation by many species, especially teleosts (Potter et al, 1990;Rebelo, 1992;.…”

Section: Introductionmentioning

confidence: 99%

“…The biology and ecology of fish species in the Ria de Aveiro have been recently characterised in various studies (Rebelo, 1992;Rebelo and Pombo, 2001;Pombo et al, 2002a). Despite these studies, the environmental effects on abundant fish distribution in Ria de Aveiro have not been studied as in other estuaries and lagoons (Pomfret et al, 1991;Marchand, 1993;Jones et al, 1996;Pope and Willis, 1996;Elliott, 1996, 1998;Irigoien et al, 1999;DuffyAnderson and Able, 1999;Kuo et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Environmental influences on fish assemblage distribution of an estuarine coastal lagoon, Ria de Aveiro (Portugal)

Pombo¹,

Elliott²,

Rebelo³

2005

Sci. Mar.

View full text Add to dashboard Cite

SUMMARY: Fish assemblage was examined for patterns in spatial and seasonal structure within an estuarine coastal lagoon, Ria de Aveiro. Two years of variation in abiotic conditions were recorded to identify factors responsible for maintaining the structure of fish assemblages. Nine sites were sampled monthly with a traditional "chincha" beach-seine net between November 1998 and October 2000. Fish abundance and biomass changed significantly between sites. Temperature was found to be the most important abiotic factor affecting the abundance (number of fish) distribution of fish assemblage, which is more related to seasonal migrations than to spatial migrations. Salinity was the most important abiotic factor affecting the fish biomass, with temperature also having a major influence. The other abiotic parameters analysed also showed some influence on the distribution of fish, although, isolated from the other controlled and/or uncontrolled factors, they could not fully explain all the differences between assemblages. Feeding analysis indicates that fish assemblage is mostly dependent on small benthic and pelagic crustaceans and/or detritus, although they can feed opportunistically on other prey. The low spatial segregation of fish in relation to feeding preference indicates that, in a food-rich lagoon such as Ria de Aveiro, the environmental-biological interactions appear to have a greater effect on fish distribution than do biological interactions.Key words: fish fauna, diversity, environmental factors, Ria de Aveiro. RESUMEN: INFLUENCIAS AMBIENTALES EN LA DISTRIBUCIÓN DE LA COMUNIDAD DE PECES EN UNA LAGUNA COSTERA ESTUÁRI-CA, RIA DE AVEIRO (PORTUGAL). -La estructura espacial y estacional de la comunidad de peces fue examinada en una laguna costera estuárica, la Ria de Aveiro. La variación de las condiciones abióticas fue registrada durante dos años para identificar los factores responsables de mantener la estructura de las comunidades de peces. Nueve estaciones fueron muestreadas mensualmente con una red tradicional de arrastre tipo "chincha", entre noviembre 1998 y octubre de 2000. La abundancia y la biomasa variaron perceptiblemente entre las estaciones. La temperatura fue el factor abiótico más importante que afectó la distribución de la abundancia (número de individuos) de la comunidad de peces, fenómeno que se relaciona más con las migraciones estacionales que con las migraciones espaciales. La salinidad fue el siguiente factor abiótico más importante que afecta la biomasa de peces. Los otros parámetros abióticos analizados también demostraron una cierta influencia en la distribución de los peces, aunque, aislados de los otros factores controlados e incontrolados, no podrían explicar completamente todas las diferencias halladas en la comunidad. Los análisis de alimentación indican que la comunidad de peces es principalmente dependiente de los crustáceos de pequeño tamaño así como de detritos bentónicos y pelágicos, aunque pueden alimentarse de forma oportunística de otras presas. La baja segregación espacial ...

show abstract

Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Environmental influences on fish assemblage distribution of an estuarine coastal lagoon, Ria de Aveiro (Portugal)

Pombo¹,

Elliott²,

Rebelo³

2005

Sci. Mar.

View full text Add to dashboard Cite

show abstract

“…All these species feed on invertebrates, either strictly or in combination with other types of food (plankton, plants, detritus, other ®shes). A. anguilla is probably the main predator of Corophium multisetosum in the study area because it represents 10 to 12% of the abundance and 31 to 50% of the total biomass of the ®sh community (Rebelo 1992). …”

Section: Interspeci®c Relationsmentioning

confidence: 99%

The amphipod Corophium multisetosum (Corophiidae) in Ria de Aveiro (NW Portugal). II. Abundance, biomass and production

Cunha¹,

Moreira²,

Sorbe

2000

Marine Biology

View full text Add to dashboard Cite

The abundance and biomass of Corophium multisetosum Stock, 1952 were determined from benthic corer samples collected monthly over 1 yr in the upper reaches of Canal de Mira (Ria de Aveiro, Portugal). Both density and biomass over the sampling period were negatively correlated with water temperature and positively correlated with chlorophyll a concentration in the sediment. C. multisetosum density was signi®cantly negatively correlated with plant biomass and positively correlated with salinity. The nature of the sediment, favourable environmental conditions, high availability of food and low interspeci®c competition allowed the population to reach a maximal density of 200´10 3 individuals m )2 and a maximal biomass (ash-free dry wt, AFDW) of 62 g AFDW m )2 . The population was highly productive, especially during the autumn/winter period. Production, estimated by two dierent methods (Hynes method: 251 g AFDW m )2 yr )1

show abstract

Recruitment and Production of Commercial Species in Estuaries

Costa¹,

Cabral²,

Drake³

et al. 2002

Fishes in Estuaries

View full text Add to dashboard Cite

The Ichthyofauna and Abiotic Hydrological Environment of the Ria de Aveiro, Portugal

Cited by 41 publications

References 12 publications

Environmental influences on fish assemblage distribution of an estuarine coastal lagoon, Ria de Aveiro (Portugal)

Environmental influences on fish assemblage distribution of an estuarine coastal lagoon, Ria de Aveiro (Portugal)

The amphipod Corophium multisetosum (Corophiidae) in Ria de Aveiro (NW Portugal). II. Abundance, biomass and production

Recruitment and Production of Commercial Species in Estuaries

Contact Info

Product

Resources

About