Assessment of fish assemblages in coastal lagoon habitats: Effect of sampling method

Franco, Anita; Pérez-Ruzafa, Ángel; Drouineau, Hilaire; Franzoi, Piero; Koutrakis, E. T.; Lepage, Mario; Verdiell‐Cubedo, David; Bouchoucha, Marc; López-Capel, Antonio; Riccato, Federico; Sapounidis, A.; Marcos, Concepción; Paterna, Francisco José Oliva; Torralva-Forero, M.; Torricelli, Patrizia

doi:10.1016/j.ecss.2011.08.015

Cited by 69 publications

(53 citation statements)

References 53 publications

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“…In contrast, large-sized individuals (typically males, TL>17 cm) tend to escape from the sampling gear. For UVCs, however, small-sized individuals (TL<3.0 cm) are difficult to detect, while large-sized individuals (TL>17 cm) are often easier to spot (Franco et al 2012, Tuya et al 2014b, Espino et al 2015. In our study, UVCs recorded a larger abundance of individuals; for mature populations of this species, the sex ratio rendered by UVCs seems to provide a good approximation to the structure of the population.…”

Section: Discussionmentioning

confidence: 69%

Population structure of the pearly razorfish, <em>Xyrichtys novacula</em> (Actinopterygii: Labridae), in sand-seagrass mosaics: spatial variation according to habitat features and sampling techniques

Espino¹,

Triay‐Portella²,

González³

et al. 2015

Sci. Mar.

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Summary:Habitat structure affects the distribution of fishes, particularly across reef-dominated habitats, but few studies have connected patterns in the abundance of soft-bottom fishes with the structure of the habitat. The spatial and temporal patterns of variation in the abundance, biomass and population structure of the pearly razorfish, Xyrichtys novacula, inhabiting sand-Cymodocea nodosa seagrass mosaics were described through two complementary techniques: underwater visual counts and seine nets. We sought to analyse whether biotic (seagrass shoot density, leaf length and meadow cover) and abiotic (sediment composition and particle size) structural elements explained variation in patterns of abundance and biomass. Underwater visual counts registered a larger abundance of individuals and proved significant variation in fish abundance and biomass at the scale of locations, which was otherwise not detected through seine nets. Seasonal variation in fish abundance and biomass was, in all cases, minor. Habitat structural elements helped to explain patterns in fish abundance and biomass. This fish species was particularly abundant in sediments dominated by coarse sands in continuous meadows of C. nodosa (>90% seagrass cover) with intermediate densities of 500 to 1000 shoots m -2 , followed by large-sized seagrass patches with >1000 shoots m -2 . A trade-off between protection provided by seagrass canopies and protection derived from its burial behaviour, limited under high seagrass shoot densities, may explain spatial variation patterns.Keywords: habitat; structural complexity; soft bottoms; sediments; sex ratio. Estructura poblacional del 'pejepeine', Xyrichtys novacula (Actinopterygii: Labridae), en mosaicos arena-pradera de fanerógama marina: variación espacial de acuerdo con las características del hábitat y técnicas de muestreo Resumen: La estructura del hábitat afecta a la distribución de los peces, particularmente en los hábitats dominados por arrecifes. Sin embargo, los estudios que conectan patrones de abundancia de peces en fondos blandos con la estructura del hábitat son, comparativamente, más escasos. En este estudio, se describen los patrones espacio-temporales de variación en abundancia, biomasa y estructura poblacional del 'pejepeine', Xyrichtys novacula, en hábitats de arena y praderas de faneró-gamas marinas constituidas por Cymodocea nodosa, empleando dos técnicas complementarias: censos visuales subacuáticos (UVCs) y arrastres (SNs). Se analizó si los elementos estructurales bióticos (densidad de pies, longitud de hoja y cobertura de la pradera) y abióticos (composición del sedimento y tamaño de las partículas) contribuyen a explicar la variación en los patrones de abundancia y biomasa. Los UVCs registraron una mayor abundancia de individuos y demostraron una variación significativa en abundancia y biomasa a escala de localidades, estas variaciones no fueron detectadas por los arrastres. La variación estacional en la abundancia y biomasa de individuos fue mínima en todos los casos. Los elemento...

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Section: Discussionmentioning

confidence: 69%

Population structure of the pearly razorfish, <em>Xyrichtys novacula</em> (Actinopterygii: Labridae), in sand-seagrass mosaics: spatial variation according to habitat features and sampling techniques

Espino¹,

Triay‐Portella²,

González³

et al. 2015

Sci. Mar.

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“…Estos últimos, pueden estar influyendo de forma notable en la composición por especies, un hecho que ha sido documentado por varios autores (Selleslagh et al 2009, Franco et al 2011. El fundamento para una relación positiva entre las características del sedimento y los peces que se asocian al mismo, radica en la relación que existe entre los invertebrados bentónicos, que son un componente esencial de la dieta de numerosas especies de peces, y las características granulométricas y el contenido de materia orgánica de los sedimentos.…”

Section: Discussionunclassified

Variaciones espaciales y temporales de la abundancia de peces juveniles en la laguna costera Barra de Navidad, Jalisco, México: Efectos del huracán

González-Sansón

Aguilar-Betancourt

Kosonoy-Aceves

et al. 2016

Rev. biol. mar. oceanogr.

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“…In the presently reported study, the fi sh assemblage was largely dominated by the resident and benthivorous species representing, respectively, 68.43% and 57.14% of the total catches. In the SW Mediterranean, in the Mar Lagoon (Spain), an ecosystem with a comparably surface area (135 km 2 ) also located in a semi-arid region, the majority of the fi sh taxa (>50%) were resident in the lagoon (Franco et al 2012). In this lagoon, benthivorous species (BV) were also dominant in the fi sh assemblage in terms of both species number and abundance.…”

Section: Discussionmentioning

confidence: 99%

“…For example, a higher sampling effort (measured here by the number of samples collected in the studies) usually allows a higher probability of capturing rare, or less abundant species, hence leading to an increase of the total number of species captured in the study (Krebs 1999). The beach seine net used is consid- Fish assemblages of Nador Lagoon, Morocco 121 ered to be a very effective technique for sampling in shallow waters, especially in lagoon ecosystems (Pierce et al 1990, Franco et al 2012. As in many others lagoons, a small number of species dominated the assemblage (Maci and Basset 2009).…”

Section: Discussionmentioning

confidence: 99%

Fish assemblages of a shallow Mediterranean lagoon (Nador, Morocco): An analysis based on species and functional guilds

Jaafour¹

2015

Acta Ichthyol. Piscat.

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R. 2015. Fish assemblages of a shallow Mediterranean lagoon (Nador, Morocco): An analysis based on species and functional guilds. Acta Ichthyol. Piscat. 45 (2): 115-124.Background. Due to their location between the continent and the sea and their shallow depths, lagoons play an important ecological role in coastal ecosystems by providing a selection of habitat types for many species, functioning as nursery areas and feeding grounds for marine opportunistic fi shes. The fi sh fauna of the Nador Lagoon (NE Morocco), as in the majority of southern Mediterranean lagoons, has been insuffi ciently studied, even though the lagoon itself supports important commercial fi sheries. The presently reported study investigated the spatial and seasonal uses of shallow habitats for fi sh fauna in the Nador Lagoon. Materials and methods. Sampling was done using a beach seine net at six stations covering almost entire lagoon and representing habitats differing in many parameters such as the distance from the inlet, bottom sediment characteristics, presence of macroalgae, etc. The fi sh abundance was standardized as catch per unit effort (CPUE) and the fi sh community was analysed both in terms of its taxonomic and functional composition (by making use of both ecological and dietary preference guilds). Results. A total of 2872 individuals, representing 15 species from 12 families, was collected during the four seasons. Only six species were always present in all seasons. Fish abundance peaked in spring and the species diversity was higher in spring and summer. The fi sh assemblage was largely dominated in terms of ecological guild by the resident and benthivorous species. Spatial and seasonal fi sh assemblages differed both in terms of fi sh abundance and diversity and also in terms of functional guilds composition. In autumn, the fi sh assemblage was dominated by the marine juvenile migrants whereas in winter, spring, and summer, resident species were the most abundant. Conclusion. The combination of taxonomic and functional characteristics of the fi sh assemblages, determined in the presently reported study, may contribute to a better understanding of the ecological networks of the Nador Lagoon, thus providing useful data for its conservation and management. Keywords: fi sh, spatio-temporal assemblages, beach seine, lagoon, Nador, Morocco Jaafour et al. 116 or even restoring certain Mediterranean lagoons are being discussed. Hence, there is a need for more information on the role and functioning of coastal lagoons in terms of fi sh requirements.The Nador Lagoon, also known as the "Sebkha Bou-Areg" or "Mar Chica" (the small sea), is the second largest lagoon complex in northern Africa (115 km 2 ) and the broadest paralic environment of Morocco. Its importance consists not only in its ecological value (RAMSAR site) but also in its socio-economic role. The fi sh fauna of the Nador Lagoon is not well known (Bouchereau et al. 2000), although the lagoon itself maintains a diverse fi sh community and supports important commercial ...

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Assessment of fish assemblages in coastal lagoon habitats: Effect of sampling method

Cited by 69 publications

References 53 publications

Population structure of the pearly razorfish, <em>Xyrichtys novacula</em> (Actinopterygii: Labridae), in sand-seagrass mosaics: spatial variation according to habitat features and sampling techniques

Population structure of the pearly razorfish, <em>Xyrichtys novacula</em> (Actinopterygii: Labridae), in sand-seagrass mosaics: spatial variation according to habitat features and sampling techniques

Variaciones espaciales y temporales de la abundancia de peces juveniles en la laguna costera Barra de Navidad, Jalisco, México: Efectos del huracán

Fish assemblages of a shallow Mediterranean lagoon (Nador, Morocco): An analysis based on species and functional guilds

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