Diurnal and Tidal Variation in the Abundance of the Fish Fauna of a Temperate Tidal Mudflat

Morrison, Mark A.; Francis, Malcolm P.; Hartill, Bruce; Parkinson, D.

doi:10.1006/ecss.2001.0857

Cited by 109 publications

(101 citation statements)

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“…In the present study 12 species of fishes were recorded in low-tide and 31 species in high-tide conditions. The number of fish species recorded in the studied mudflat during high tide was higher than in other geographical areas, as recorded in previous studies: 22 fish species were recorded on the mudflats of Tagus estuary (Salgado et al 2004), 17 fish species on an intertidal mudflat of an Australian estuary (Morrison et al 2002), 20 in an intertidal mudflat of an estuarine system in Japan (Kanou et al 2005) and 18 in France (Amara and Paul 2003).…”

Section: Discussionsupporting

confidence: 66%

“…Seasonal shifts in fish communities are common, as a result of sequential immigration and emigration of certain fish species (Hyndes et al 1999, Thiel andPotter 2001). Tidal shifts in fish assemblages have also been reported by several authors (Sogard et al 1989, Rountree and Able 1993, Gray et al 1998, Griffiths 2001, Methven et al 2001, Morrison et al 2002, Guest et al 2003. Several environmental factors, in addition to habitat availability, contribute to fish assemblage structure in different spatial and temporal scales (Thiel et al 1995, Methven et al 2001.…”

Section: Introductionmentioning

confidence: 97%

“…They are therefore only available to nekton during tidal inundation, which implies tidal migrations to use this habitat (Nagelkerken and van der Velde 2002, Pihl and Wennhage 2002, Weerts and Cyrus 2002, Mumby et al 2004, Castillo-Rivera et al 2010. However, unlike estuarine salt marshes, which have long been considered highly productive habitats and have been thoroughly studied (Cattrijsse et al 1997, Halpin 2000, Hampel et al 2003, mudflats have only recently become an object of study (Morrison et al 2002, Melville and Connolly 2005, Dolbeth et al 2007, Nip and Wong 2010.…”

Section: Introductionmentioning

confidence: 99%

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Seasonal dynamics of fish assemblages in an intertidal mudflat of Indian Sundarbans

Chaudhuri¹,

Mukherjee²,

Homechaudhuri³

2013

Sci. Mar.

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SUMMARY: In the present study, the seasonal and inter-annual fish assemblage structure of intertidal mudflats of Indian Sundarbans was analysed during tidal cycles. A total of 31 fish species belonging to 22 families and 9 orders were collected during high tide, whereas only 12 were recorded during low tide. Fish assemblage descriptions were based on several community descriptors, namely diversity (H′), species richness (S), species dominance (D), and species evenness (J) and on an ecological guild classification. A canonical correspondence analysis (CCA) was performed to evaluate the relationship between estuarine habitat and fish assemblages in the mudflat habitat during inundated and exposed conditions. All the diversity indices showed marked seasonal and inter-annual variations. Temporal variations were also found in fish assemblage structure in both tidal conditions. Estuarine species were the most important ecological guild of the mudflats during both high and low tides. Of all the abiotic variables examined, CCA showed that salinity, pH and nutrients were the most important influencing fish assemblage during high tide. Total dissolved solids, water temperature and salinity were significant during low tide. Considering the importance of mudflats in supporting fish diversity, the present study emphasizes the increased efforts for conservation of this habitat in the Indian Sundarbans.Keywords: ichthyofaunal diversity, seasonal variation, tidal variation, mudflats, Bray-Curtis similarity, CCA. RESUMEN: Dinámica estacional De comuniDaDes De peces en una marisma intermareal De sunDarbans inDio. -En el presente estudio, la estructura estacional e interanual de comunidades de peces en el intermareal fangoso de Sundarbans se analizó durante ciclos de marea. 31 especies pertenecientes a 22 familias y 9 órdenes fueron recogidas durante la marea alta, mientras que sólo 12 se registraron durante la marea baja. Las comunidades se describieron varios descriptores: diversidad (H′), riqueza de especies (S), dominancia de especies (D) y uniformidad de especies (J) y una clasificación ecológica de comunidad. Se realizó un análisis de correspondencia canónico (CCA) para evaluar la relación entre hábitat estuárico y comunidades de peces durante condiciones inundadas y expuestas. Todos los índices de diversidad mostraron marcadas diferencias estacionales e interanuales. También se encontraron variaciones temporales en la estructura del conjunto de peces en tanto las condiciones de la marea. Especies estuarinas (ES) fue el grupo ecológico más importante de las marismas de Sundarbans tanto durante la marea alta como en la baja.Palabras clave: diversidad íctica, variación estacional, variación de marea, marismas, similitud de Bray-Curtis, CCA. Scientia Marina 77(2)

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Section: Discussionsupporting

confidence: 66%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Seasonal dynamics of fish assemblages in an intertidal mudflat of Indian Sundarbans

Chaudhuri¹,

Mukherjee²,

Homechaudhuri³

2013

Sci. Mar.

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“…However, this equipment is apparently not very effective in capturing individuals that respond rapidly to the net's visual and mechanical stimuli (Glass & Wardle, 1989;Methven et al, 2001;Gell & Whittington, 2002), generally resulting in an underestimation of the richness of the local ichthyofauna which can have greater or lesser importance for future handling and management decisions. Performing nocturnal sampling is also essential for the correct evaluation of fish diversity as such a sampling pattern increases the chances of capturing species that are rarely sampled during the day, resulting in a better representation of the true community structure (Rountree & Able, 1993;Morrison et al, 2002).…”

Section: ________________mentioning

confidence: 99%

Comparison of the temporal and taxonomic patterns of ichthyofauna captured with a fyke net in two sheltered environments in southern Brazil

Soeth¹,

Ribeiro²,

Spach³

et al. 2015

lajar

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ABSTRACT. We use two taxonomic indexes to assess the variability of the taxonomic structure and diversity of the ichthyofauna of two low-energy environments in southern Brazil and to compare the temporal patterns of these two ichthyofaunas. Sampling was conducted in the infralittoral zones of Maciel (Paranaguá Bay, PR) and Indio Beach (Norte Bay of Florianópolis, SC). A fyke net was set up at a depth of 0.5 to 2.0 m and left in place for 48 h for each of the samplings. A total of two diurnal and two nocturnal samplings were conducted monthly per one year. The ichthyofaunas at the two sites exhibited similar temporal dynamics, with their abundance and biomass presenting a tendency to increase with increasing temperature during the spring and summer months. A total of 113 species were captured, of which 47 were present at both sites. Harengula clupeola, Sphoeroides testudineus and S. greeleyi were especially abundant at both sites. The co-occurring species displayed similar day and night occupancy trends. In all seasons, the obtained values for the average taxonomic distinctness and variation in taxonomic distinctness were within the confidence intervals. The seasonal reproduction and recruitment patterns led to slight changes in taxonomic distinctness during the year, which were within the expected intervals. Keywords: ichthyofauna, taxonomic distinctness, nycthemeral dynamics, sheltered beach, southern Brazil.Comparación de los patrones taxonómicos y temporales de la ictiofauna capturada con red fyke en dos ambientes protegidos en el sur de Brasil RESUMEN. Se utilizaron dos índices taxonómicos para evaluar la variabilidad de la estructura taxonómica y diversidad de la ictiofauna en dos ambientes de baja energía en el sur de Brasil, así como para comparar sus patrones temporales. Los muestreos se realizaron en las zonas infralitoral de Maciel (Bahía de Paranaguá, PR) e Indio Beach (Bahía Norte, SC). Se instaló una "fyke net" a una profundidad de 0,5 a 2 m, durante 48 h, para cada uno de los muestreos. Durante un año se realizó un total de dos muestreos diurnos y dos nocturnos. La ictiofauna en los dos sitios mostró dinámicas temporales similares, con su abundancia y biomasa presentando una tendencia a aumentar con el incremento de la temperatura durante los meses de primavera y verano. Un total de 113 especies fueron capturadas, de los cuales 47 estuvieron presentes en ambos sitios. Harengula clupeola, Sphoeroides testudineus y S. greeleyi fueron especialmente abundantes en ambos sitios. Las especies coexistentes mostraron tendencias similares de ocupación tanto de día como de noche. En todas las estaciones, los valores obtenidos para la distinción taxonómica media y para la variación en la distinción taxonómica estuvieron dentro de los intervalos de confianza. Los patrones de reproducción y reclutamiento estacionales llevaron a ligeros cambios en la distinción taxonómica durante el año, que estuvieron dentro de los intervalos esperados. Palabras clave: ictiofauna, distinción taxonómica, dinámica nictimeral, play...

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“…By the 1980s, however, about 40% had unfortunately disappeared (Kimura, 1994). In recent years, useful functions of tidal flats such as biological production, water quality clarification and recreation have been recognized more and more (Miyoshi et al, 1991;Kimura et al, 1992;Imamura, 1997;Evans et al, 1998;Ishii et al, 2001;Morrison et al, 2002;Tiner et al, 2003;Sakamaki et al, 2006;Magni and Montani, 2006). For example, Kimura et al, (1992) compared water quality at the seashore where an artificial tidal flat existed, and its offing region.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Dredged Sediment as a Silt and Clay Source for Artificial Tidal Flats

Nakai

Imai

Ishii

et al. 2009

J. of Wat. & Envir. Tech.

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This research was carried out to investigate the feasibility of using dredged sediment (DS) as the additive of silt and clay for artificial tidal flats. A series of experiments conducted in the real seashore and in a tidal flat simulator demonstrated that DS could be used for artificial tidal flats. Furthermore, the tidal flat simulator experiment showed that the macrobenthos population increased with the DS addition. However, use of conditioners made of paper sludge and poly-aluminum chloride for DS granulation treatment was associated with a time lag in the growth of the macrobenthos: these agents may be released during the course of the experimental period. Possible reasons for the increased polychaete and gastropod abundances in the artificial tidal flats might be an increase in supplied organic matter and stimulated benthic microalgae growth due to the DS addition. Finally, a growth test was carried out for the short neck clam Ruditapes philippinarum, which showed that it can grow in artificial tidal flats to which DS has been added. Too much DS, however, may suppress its growth.Keywords: artificial tidal flat, benthic ecosystem, dredged sediment. INTRODUCTIONIn the 1940s, the total area of natural tidal flats in Japan was approximately 82,600 ha. By the 1980s, however, about 40% had unfortunately disappeared (Kimura, 1994). In recent years, useful functions of tidal flats such as biological production, water quality clarification and recreation have been recognized more and more (Miyoshi et al., 1991;Kimura et al., 1992;Imamura, 1997;Evans et al., 1998;Ishii et al., 2001;Morrison et al., 2002;Tiner et al., 2003;Sakamaki et al., 2006;Magni and Montani, 2006). For example, Kimura et al., (1992) compared water quality at the seashore where an artificial tidal flat existed, and its offing region. They found that COD in the seashore was significantly lower than that in the offing region. This difference in the water quality in the investigated area was accounted for by increased capability of the artificial tidal flats for degrading organic matter. Benthic organisms have been investigated as the cause of the water clarification capability of artificial and natural tidal flats (Miyoshi et al., 1991, Imamura, 1997. Because such useful functions have highlighted the importance of tidal flats, in 2003 the Japanese government enacted a law for the promotion of nature restoration, which charges those engaged in development activities in coastal areas with mitigation of damage to or lost of tidal flats.

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Diurnal and Tidal Variation in the Abundance of the Fish Fauna of a Temperate Tidal Mudflat

Cited by 109 publications

References 28 publications

Seasonal dynamics of fish assemblages in an intertidal mudflat of Indian Sundarbans

Seasonal dynamics of fish assemblages in an intertidal mudflat of Indian Sundarbans

Comparison of the temporal and taxonomic patterns of ichthyofauna captured with a fyke net in two sheltered environments in southern Brazil

Evaluation of Dredged Sediment as a Silt and Clay Source for Artificial Tidal Flats

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