High seagrass diversity and canopy-height increase associated fish diversity and abundance

Hori, Masakazu; Suzuki, Takao; Monthum, Yaowaluk; Srisombat, Tippamas; Tanaka, Yoshiyuki; Nakaoka, Masahiro; Mukai, Hiroshi

doi:10.1007/s00227-009-1184-3

Cited by 54 publications

(49 citation statements)

References 46 publications

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“…As a result, a trade-off between protection provided by seagrass canopies and protection derived from burial behaviour may explain the spatial variability of this fish species. The regression models showed that the average seagrass leaf length affected the distribution of Xyrichtys novacula; a larger leaf length may increase the capacity of protection by the habitat, as has been reported for many fishes in seagrass meadows (Gullström et al 2008, Hori et al 2009). The type of sediment (i.e.…”

Section: Discussionsupporting

confidence: 56%

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: Discussionsupporting

confidence: 56%

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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“…The ecological importance of marine meadows for fish species depends on their structural complexity and morphological characteristics (Hori et al 2009). Bell and Westoby (1986a) found a positive relationship between the density of the meadow and the abundance of small fish in terms of the presence/absence of predators, suggesting that fish are capable of discriminating between more or less dense meadows, or between meadows and adjacent bottoms lacking vegetation.…”

Section: Diferencias Entre Islas Y Praderasmentioning

confidence: 99%

“…Some factors affecting the attributes of fish assemblages, such as the types of adjacent habitats and their proximity, fishing effort, pollution, etc., are more difficult to quantify at large spatial scales (>100 km), as that employed here. To detect these relationships it is necessary to conduct a small-scale experimental field trial of one meadow, like that of Bell and Westoby (1986b), or to select a limited number of meadows, as done by Hori et al (2009).…”

Section: Diferencias Entre Islas Y Praderasmentioning

confidence: 99%

“…La importancia ecológica de las praderas marinas para las especies de peces depende de sus características morfoló-gicas y su complejidad estructural (Hori et al 2009). Bell y Westoby (1986a) encontraron una relación positiva entre la densidad de la pradera y la abundancia de peces pequeños, en términos de presencia o ausencia de predadores, sugiriendo la posibilidad de que los peces son capaces de discriminar entre praderas más o menos densas, o entre éstas y los fondos adyacentes sin vegetación.…”

Section: Analysis Of Size and Nursery Roleunclassified

“…En escalas espaciales grandes (>100 km), como la empleada aquí, subyacen otros factores que influencian los atributos de estas comunidades ícticas, tales como los tipos de hábitats adyacentes y proximidad a los mismos, el esfuerzo pesquero, la contaminación, etc., y son más difíciles de cuantificar. Para detectar estas relaciones es preciso realizar estudios experimentales de campo a pequeña escala en una pradera, como el llevado a cabo por Bell y Westoby (1986b), o bien seleccionar un número limitado de praderas, como en el de Hori et al (2009).…”

Section: Analysis Of Size and Nursery Roleunclassified

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Ichthyofauna associated with Cymodocea nodosa meadows in the Canarian Archipelago (central eastern Atlantic): Community structure and nursery role

et al. 2011

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ABSTRACT. We carried out 84 trawls in 41 seagrass meadows composed of the phanerogam Cymodocea nodosa at three islands of the Canarian Archipelago, during June to September 2003, in order to describe the associated ichthyofauna (composition, richness, and abundance), to analyze the role that this habitat can play in fish recruitment, and to determine the potential relationship between the spatial structure of the seagrass meadow and the patterns of richness and abundance of the fish assemblage. A total of 8298 individuals were captured. The five most relevant species, in terms of abundance and frequency, were Spondyliosoma cantharus, Diplodus annularis, Syngnathus typhle, Mullus surmuletus, and Pagellus erythrinus. Gran Canaria had the largest species richness (36 species) and mean number of species per sample (8.69 ± 0.49; mean ± SE). Lanzarote had the largest number of individuals (64.83% of the total registered) and mean total abundance per sample (168.39 ± 30.91). High densities of individuals were registered (95.86 ± 13.5) and 92.91% of fishes were juveniles. Our data showed that the physical configuration of the seagrass meadows did not significantly affect the patterns of richness and abundance of the associated fish assemblage. In conclusion, the C. nodosa meadows exhibited a singular ichthyofauna and they contribute to the maintenance of the diversity of the coastal fish assemblages in the Canarian Archipelago. This habitat constitutes, during spring and summer, a nursery habitat for juvenile fishes of many species, several of them commercially targeted.Key words: community structure, nursery habitat, Cymodocea nodosa, seagrass meadows, Canarian Archipelago. RESUMEN.Se realizaron 84 arrastres en 41 praderas marinas de la fanerógama Cymodocea nodosa en tres islas del Archipiélago Canario, de junio a septiembre de 2003, con los objetivos de describir la ictiofauna (composición, riqueza y abundancia) asociada, analizar el papel que puede desempeñar esta comunidad como hábitat para el reclutamiento y la cría de peces, y determinar la posible relación entre la estructura espacial de la pradera y la riqueza y abundancia del poblamiento de peces. Se capturaron 8298 individuos. Las cinco especies más importantes, en términos de abundancia y frecuencia, fueron Spondyliosoma cantharus, Diplodus annularis, Syngnathus typhle, Mullus surmuletus y Pagellus erythrinus. Gran Canaria presentó la mayor riqueza (36 especies) y número medio de especies por muestra (8.69 ± 0.49; media ± error estándar). Lanzarote presentó el mayor número de individuos (64.83% del total registrado) y abundancia total media por muestra (168.39 ± 30.91). Se registró una densidad alta de individuos (95.86 ± 13.5) y el 92.91% de los peces capturados fueron jóvenes. Nuestros datos mostraron que las diferencias en la estructura física de las praderas marinas no afectaron los patrones de riqueza y abundancia del poblamiento de peces. En conclusión, las praderas de C. nodosa en Canarias presentaron una ictiofauna característica, además contribuyen ...

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Seagrasses and Macroalgae: Importance, Vulnerability and Impacts

Macreadie

Jarvis

Trevathan‐Tackett

et al. 2017

Climate Change Impacts on Fisheries and Aquaculture

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High seagrass diversity and canopy-height increase associated fish diversity and abundance

Cited by 54 publications

References 46 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

Ichthyofauna associated with Cymodocea nodosa meadows in the Canarian Archipelago (central eastern Atlantic): Community structure and nursery role

Seagrasses and Macroalgae: Importance, Vulnerability and Impacts

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