2012
DOI: 10.1111/j.1095-8649.2012.03231.x View full text |Buy / Rent full text
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Abstract: In this study, cryptobenthic fish depth patterns and their correlations with habitat complexity and sea urchin densities were investigated. In general, total density, species richness and diversity were higher in the shallower zones (3 m), while evenness was higher at the 10 m depth zone. Among sites, species density was similar at the 10 m zone, but at the 3 m zone it varied greatly. Species-specific depth preferences were found. Correlation between species density and habitat complexity was usually positive.… Show more

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“…The low scores of this metric at the impacted sites may indicate small-scale changes in the benthic cover, probably related to the availability of shelter, which is considered especially important for small reef fishes to mitigate normally high rates of predation (Almany and Webster, 2006). Dalben and Floeter (2012) reported that cryptic fishes were positively correlated with microhabitat complexity (e.g., number of holes), which is an indication of the suitability of this metric to assess changes physical structure and benthic cover.…”
Section: Effects Of Urban Influencementioning
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“…The low scores of this metric at the impacted sites may indicate small-scale changes in the benthic cover, probably related to the availability of shelter, which is considered especially important for small reef fishes to mitigate normally high rates of predation (Almany and Webster, 2006). Dalben and Floeter (2012) reported that cryptic fishes were positively correlated with microhabitat complexity (e.g., number of holes), which is an indication of the suitability of this metric to assess changes physical structure and benthic cover.…”
Section: Effects Of Urban Influencementioning
“…Cryptic fishes comprise small-sized species, which are visually and behaviorally cryptic and live in close association with the substratum (e.g. Blenniidae, Labrisomidae and Gobiidae) (La Mesa et al, 2006;Dalben and Floeter, 2012). The low scores of this metric at the impacted sites are probably associated with poor benthic cover, characterized by low macroalgae cover and few mobile and sessile invertebrates.…”
Section: Effects Of Urban Influencementioning
“…Their high abundance suggests that they play an important role in the food webs on coral reefs (Wilson 2001;Depczunski and Bellwood 2003). Distribution patterns of such small reef fishes depend on various environmental factors, such as the availability of food and shelter, and depth preferences (Williams 1991;Zikova et al 2011;Ahmadia et al 2012a, b;Dalben and Floeter 2012;Harborne et al 2012;Goatley et al 2016;Tornabene et al 2016).…”
Section: Introductionmentioning
“…Although some individuals of cryptobenthic fish species were observed in the video recordings, species identification and quantifying the number of bites taken was not possible through this technique. Cryptobenthic reef fishes are known to make a significant contribution to reef trophodynamics (Ackerman & Bellwood, 2002) and might also be underestimated in visual census techniques (Brock, 1982; Ackerman & Bellwood, 2000; Willis, 2001; Dalben & Floeter, 2012), which indicates the necessity of specific efforts to evaluate their functional roles.…”
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