scholarly journals Effects of habitat on reef fishes biodiversity and composition in rocky reefs

2020 ◽  
Vol 29 ◽  
pp. 137-148
Author(s):  
X Zeng ◽  
KR Tanaka ◽  
M Mazur ◽  
K Wang ◽  
Y Chen ◽  
...  
Keyword(s):  
Reef Fish ◽  
Community Composition ◽  
Species Distribution Model ◽  
Fish Assemblages ◽  
Habitat Associations ◽  
Distribution Model ◽  
Fish Diversity ◽  
Rocky Reef ◽  
Human Society ◽  
Bottom Type

Reef fish are highly valuable to human society—socially, nutritionally and economically. However, they are vulnerable to both overfishing and habitat degradation. Understanding the community structure and habitat associations of reef fish is important for their management and conservation. Using a gillnet survey conducted in a subtropical rocky reef area of Ma’an Archipelago, China, we developed habitat models linking reef fish diversity and community composition with habitat factors. The parsimonious generalized additive model results showed that higher reef fish diversity was associated with southern shallower water, temperature of 25°C, lower levels of dissolved oxygen and chlorophyll a, and rock bottom type. The multivariate generalized linear model identified that month, depth, bottom type, and location significantly influenced the local reef fish; these habitat variables explained 18% of the variation in reef fish community composition. However, the lack of strong patterns and correlations between species derived from the joint species distribution model revealed that reefs within our study area are difficult to classify based on habitat-driven patterns in their associated reef fish assemblages. These findings enhance our understanding of the habitat effects on reef fish diversity and community composition and have relevance for the management of reef fish, including habitat zonation and deployment of artificial reefs.

scholarly journals Spatial, temporal and ontogenetic variation in the association of fishes (family Labridae) with rocky-reef habitats

2011 ◽  
Vol 62 (7) ◽  
pp. 870 ◽  
Author(s):  
Jason K. Morton ◽  
William Gladstone
Keyword(s):  
Fish Assemblages ◽  
Spatial Scales ◽  
Abundant Species ◽  
Habitat Associations ◽  
Rocky Reef ◽  
Habitat Variability ◽  
Life History Stages ◽  
Multiple Spatial Scales ◽  
Habitat Specialisation ◽  
Rocky Reefs

Habitat variability is an important factor structuring fish assemblages of rocky reefs in temperate Australia. Accepting the generality of this model requires that habitat-related variation is consistent through time, across multiple spatial scales, and applies to all life-history stages. We used repeated underwater visual surveys at multiple spatial scales over a 22-month period to test whether three distinct rocky-reef habitats had different wrasse assemblages and whether these assemblages were subject to spatial, temporal and ontogenetic variability. Overall, the strongest and most consistent habitat association was with sponge gardens, which had the most distinct assemblage, and the greatest species richness and density of individuals. Habitat associations in fringe and barrens were less consistent. A substantial increase in the abundance of small individuals, coinciding with warmer sea temperatures, contributed to temporal fluctuations in the density of wrasses. Overall, habitats were not strongly partitioned among larger individuals of the most abundant species, suggesting that adults are largely habitat generalists whereas small, recruiting individuals showed greater habitat specialisation. The present study emphasises the importance of incorporating spatial, temporal and ontogenetic variability into surveys of fish assemblages to understand more fully the dynamics of temperate rocky-reef systems.

Multi-scale spatial heterogeneity, habitat structure, and the effect of marine reserves on Western Mediterranean rocky reef fish assemblages

2004 ◽  
Vol 144 (1) ◽  
pp. 161-182 ◽  
Author(s):  
J. A. Garc�a-Charton ◽  
�. P�rez-Ruzafa ◽  
P. S�nchez-Jerez ◽  
J. T. Bayle-Sempere ◽  
O. Re�ones ◽  
...  
Keyword(s):  
Spatial Heterogeneity ◽  
Reef Fish ◽  
Habitat Structure ◽  
Fish Assemblages ◽  
Marine Reserves ◽  
Western Mediterranean ◽  
Rocky Reef ◽  
Multi Scale ◽  
Rocky Reef Fish

Spatiotemporal variation in the structure of reef fish and macroalgal assemblages in a north-east Atlantic kelp forest ecosystem: implications for the management of temperate rocky reefs

2018 ◽  
Vol 69 (4) ◽  
pp. 525 ◽  
Author(s):  
Pablo Pita ◽  
Diana Fernández-Márquez ◽  
Juan Freire
Keyword(s):  
Reef Fish ◽  
Fish Assemblages ◽  
Kelp Forest ◽  
Habitat Destruction ◽  
Kelp Forests ◽  
Rocky Reef ◽  
Laminaria Hyperborea ◽  
East Atlantic ◽  
North East ◽  
Rocky Reefs

Temperate rocky reefs and kelp forest ecosystems have been severely affected by overfishing, pollution and habitat destruction, and climate change is a major driver of kelp decline in many regions. Although necessary for management, ecological interactions between kelp and fish remain largely unknown in the north-east Atlantic. In the present study, underwater visual censuses (UVC) and univariate and multivariate multiple regression models were used to analyse the spatiotemporal variations in the abundance and habitat use of the rocky reef fish and macroalgae assemblages of Galicia (north-west Spain). The underwater seascape was dominated by large rocks and kelp forests of Laminaria hyperborea, L. ochroleuca and Saccorhiza polyschides. Fish assemblages were ruled by gadids, labrids and sparids. The most frequent fish species were Labrus bergylta (counted in 90% of UVC) and Pollachius pollachius (in 100% of UVC), whereas the most abundant were Boops boops (mean±s.d., 556.4±39.7 individuals ha–1) and L. bergylta (432.10±440.05 individuals ha–1). Fish and macroalgal assemblages showed different spatial preferences and responded strongly to seasonality, wave exposure and depth. To a lesser degree, fish and macroalgal assemblages showed preferences for habitat structure. Moreover, because the findings of the present study indicate that L. bergylta is a good indicator species of the health of rocky reef and kelp forests ecosystems, monitoring of this fish can be helpful for management and conservation actions.

Assessment of rocky reef fish assemblages close to seaweed farming

2015 ◽  
Vol 48 (2) ◽  
pp. 481-493 ◽  
Author(s):  
Leonardo Lara de Carvalho ◽  
Eduardo Godoy Aires de Souza ◽  
Mauricio Roque da Mata Júnior ◽  
Roberto Campos Villaça
Keyword(s):  
Reef Fish ◽  
Fish Assemblages ◽  
Rocky Reef ◽  
Seaweed Farming ◽  
Rocky Reef Fish

scholarly journals Changes in rocky reef fish assemblages throughout an estuary with a restricted inlet

Hydrobiologia ◽  
2013 ◽  
Vol 724 (1) ◽  
pp. 235-253 ◽  
Author(s):  
Jason K. Morton ◽  
William Gladstone
Keyword(s):  
Reef Fish ◽  
Fish Assemblages ◽  
Rocky Reef ◽  
Rocky Reef Fish

Evaluating day–night changes in shallow Mediterranean rocky reef fish assemblages by visual census

2007 ◽  
Vol 151 (6) ◽  
pp. 2245-2253 ◽  
Author(s):  
Ernesto Azzurro ◽  
Antonio Pais ◽  
Pierpaolo Consoli ◽  
Franco Andaloro
Keyword(s):  
Reef Fish ◽  
Fish Assemblages ◽  
Rocky Reef ◽  
Visual Census ◽  
Rocky Reef Fish
Sign in / Sign up

Export Citation Format

Share Document