Fish composition and assemblage structure in three Eastern English Channel macrotidal estuaries: A comparison with other French estuaries

Selleslagh, Jonathan; Amara, Rachid; Laffargue, Pascal; Lesourd, Sandric; Lepage, Mario; Girardin, Michel

doi:10.1016/j.ecss.2008.10.008

Cited by 108 publications

(63 citation statements)

References 60 publications

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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

“…Sin embargo, otros autores han hecho énfasis en que la variación en la abundancia de las especies de peces estuarinos depende tanto de la variación estacional de los factores ambientales (e.g., precipitaciones, salinidad), como de un conjunto de variables biológicas (e.g., reproducción y reclutamiento) que pueden presentar una alta variabilidad entre especies (Craig & Crowder 2000, Barletta et al 2008, Sheaves & Johnston 2009, Selleslagh et al 2009). Con respecto a esta consideración, es preciso resaltar que los ciclos de vida de las especies involucradas en nuestro estudio son prácticamente desconocidos, por lo que la incorporación de aspectos biológicos al análisis de las variaciones observadas resulta muy restringida.…”

Section: Discussionunclassified

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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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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 Mondego estuary, the most representative ecological guilds were the estuarine residents (ER), the marine estuarine-dependents (MMD), and the marine estuarine-opportunists (MMO), as observed in many European estuarine systems (e.g., Franco et al 2006;Selleslagh and Amara 2008). Estuarine residents (ER) dominated the fish assemblage in terms of numbers, but their species number was relatively low, also a common pattern in European estuaries (Selleslagh et al 2009;França et al 2010) and coastal lagoons (Franco et al 2006;Ribeiro et al 2006). An alteration in dominance was observed along the study period between estuarine residents (ER) and marine estuarine-dependent species (MMD), which can be attributed to the changes in precipitation and river runoff conditions.…”

Section: Fish Assemblage Composition and Dominance Patternsmentioning

confidence: 99%

Trends in estuarine fish assemblages facing different environmental conditions: combining diversity with functional attributes

et al. 2012

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Changes in the Mondego estuary (Portugal) fish assemblage were documented with a long-term monitoring program between June 2003 and March 2010, during which several extreme environmental events occurred, including severe droughts and heavy precipitation. The structure and composition of the fish assemblage was analyzed based on a set of indicators: dominance, diversity, evenness, and composition in functional groups (ecological and feeding guilds). Higher species number, diversity, and evenness were observed in the dry periods. Variations in the relative abundance of the ecological guilds were also observed: in dry years, estuarine residents were the most abundant group, while in typical and rainy years, the marine estuarine-dependent species increased in abundance. Among the feeding guilds, the most abundant group was the invertebrate and fish feeders. Planktivorous and invertebrate feeders occurred in higher abundance in dry years, while the opposite was verified for omnivorous species. The mean trophic level of the fish assemblage increased during the drought period, constantly decreasing afterward, which could be attributed to an increase in predators in dry years. The cumulative responses of estuarine fish assemblages to ongoing climate changes and discrete extreme weather events confirm their importance as indicators of environmental changes.

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“…In estuaries, salinity and muddy sediments have been considered the two most important factors structuring fish assemblages (Selleslagh et al 2009). In coastal lagoons, according to Pérez-Ruzafa et al (2007b), most fish assemblage characteristics, including species composition and productivity, are related to the geomorphological characteristics of the lagoons.…”

Section: Inter-estuarine and Lagoon Variability In European Waters Anmentioning

confidence: 99%

Coastal lagoons: “transitional ecosystems” between transitional and coastal waters

et al. 2010

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The European Water Framework Directive (WFD) establishes a well differentiated typology of water bodies on the basis of scientific and biological criteria. For coastal waters, such criteria have long been established, while for transitional waters they are still under discussion. One of the difficulties when applying the WFD to coastal lagoons is to include them in only one of these categories, and while there is no doubt about the nature of estuaries as transitional waters, there is some controversy concerning lagoons. To what extent, reference conditions may be similar for estuaries and lagoons, or whether features common to all coastal lagoons are more important for differentiating them from other water bodies than the fact that there is (or is not) any fresh water influence, is something that remains unclear and is discussed in this work. Coastal lagoons and estuaries form part of a continuum between continental and marine aquatic ecosystems. Shelter, strong boundaries or gradients with adjacent ecosystems, anomalies in salinity regarding freshwater or marine ecosystems, shallowness, etc. all contribute to the high biological productivity of estuaries and lagoons and determine common ecological guilds in the species inhabiting them. On the other hand, fresh water influence, the spatial organization of gradients and environmental variability (longitudinal onedimensional gradients in estuaries versus complex patterns and three-dimensional heterogeneity in lagoons) constitute the main differences, since these factors affect both the species composition and the dominance of certain ecological guilds and, probably, the system's complexity and homeostatic capability. In the context of the WFD, coastal lagoons and estuaries are closer to each other than they are to continental or marine waters, and, on the basis of the shared features, they could be intercalibrated and managed together. However, coastal lagoons cannot be considered transitional waters according to the present definition. To assume that fresh water influence is an inherent characteristic to these ecosystems could lead to important changes in the ecological organization and functioning of coastal lagoons where natural fresh water input is low or null. In our opinion, the present day definition of transitional waters should be changed substituting the criterion of fresh water influence by another based on common features, such as relative isolation and anomalies in salinity in water bodies with marine influence. Otherwise, coastal lagoons should be considered a particularly characteristic type of water mass for establishing reference conditions of ecological status.

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Fish composition and assemblage structure in three Eastern English Channel macrotidal estuaries: A comparison with other French estuaries

Cited by 108 publications

References 60 publications

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

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

Trends in estuarine fish assemblages facing different environmental conditions: combining diversity with functional attributes

Coastal lagoons: “transitional ecosystems” between transitional and coastal waters

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