Spatial and temporal variation in a soft-bottom fish assemblage in St Vincent Bay, New Caledonia

1996 ◽  
Vol 125 (4) ◽  
pp. 801-812 ◽  
Author(s):  
L. Wantiez ◽  
M. Harmelin-Vivien ◽  
M. Kulbicki
Keyword(s):  
Temporal Variation ◽  
Fish Assemblage ◽  
New Caledonia ◽  
Spatial And Temporal Variation ◽  
Soft Bottom ◽  
Bottom Fish

scholarly journals Testing marine regional-scale hypotheses along the Yucatan continental shelf using soft-bottom macrofauna

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e8227 ◽  
Author(s):  
Ivan Hernandez-Avila ◽  
Frank A. Ocaña ◽  
Daniel Pech
Keyword(s):  
Continental Shelf ◽  
Temporal Variation ◽  
Functional Traits ◽  
Regional Scale ◽  
Functional Trait ◽  
Spatial And Temporal Variation ◽  
Soft Bottom ◽  
Community Patterns ◽  
Western Caribbean ◽  
The Caribbean

Different hypotheses related to the regional-scale configuration of the Yucatan Continental Shelf (YCS) between the Gulf of Mexico (GoM) and the Caribbean Sea have been proposed. Hypotheses regarding its regional boundaries include: (i) an ecoregional boundary at Catoche Cape, dividing the Western Caribbean and the Southern GoM ecoregions; and (ii) a boundary within the Southern GoM ecoregion at 89°W, separating the West and Mid-Yucatan areas. We tested the hypothesis of no variation in benthic macrofaunal assemblages between regions delimited by the former boundaries using the species and functional traits of soft-bottom macrofauna. We considered that the depth and temporal environmental dynamics might interact with regional variations, generating complex benthic community patterns. The data were collected over five years (2010–2012, 2015–2016) at 86 stations (N = 1, 017 samples, 10–270 m depth), comprising 1,327 species with 45 combinations of functional traits. The variation in species composition and functional trait assemblages were both consistent with the occurrence of three separate regions in the Yucatan Peninsula (West Yucatan, Mid-Yucatan and Western Caribbean). This regional configuration was consistent with changes in assemblage structure and depth zonation as well as temporal variation. Along with spatial and temporal variation, diversity diminished with depth and different regions exhibited contrasting patterns in this regard. Our results suggest that the spatial and temporal variation of soft-bottom macrofauna at YCS demonstrate the complex organization of a carbonate shelf encompassing different regions, which may represent transitional regions between the Caribbean and the GoM.

Spatial and Temporal Variation in a Caribbean Herbivorous Fish Assemblage

2012 ◽  
Vol 278 ◽  
pp. 63-72 ◽  
Author(s):  
Dorothée Kopp ◽  
Yolande Bouchon-Navaro ◽  
Max Louis ◽  
Pierre Legendre ◽  
Claude Bouchon
Keyword(s):  
Temporal Variation ◽  
Fish Assemblage ◽  
Herbivorous Fish ◽  
Spatial And Temporal Variation

scholarly journals Spatial and temporal variation of fish assemblage associated with aquatic macrophyte patches in the littoral zone of the Ayapel Swamp Complex, Colombia

2017 ◽  
Vol 29 (0) ◽  
Author(s):  
Carlos Mario Marín Avendaño ◽  
Néstor Jaime Aguirre Ramírez
Keyword(s):  
Temporal Variation ◽  
Environmental Conditions ◽  
Fish Assemblage ◽  
Littoral Zone ◽  
Aquatic Macrophyte ◽  
Abundant Species ◽  
Assemblage Structure ◽  
Spatial And Temporal Variation ◽  
Suitable Habitat ◽  
Fish Assemblage Structure

Abstract: Aim The purpose of the present study was to examine spatial and temporal variation in fish assemblage structure associated with aquatic macrophytes in the littoral zone of the ASC. Methods Specimens were caught between January 2008 and February 2009, over four limnimetric moments, using both cast net and seine net. Data on the temperature, electrical conductivity, pH and dissolved oxygen was recorded for the characterization of the water mass in the sites. Results A total of 34,151 specimens from 44 species were collected. The most abundant species were Eigenmannia virescens, Astyanax caucanus, Astyanax fasciatus, Roeboides dayi and Cyphocharax magdalenae, which together accounted for more than 75% of the sample. Temporal and spatial comparisons showed variation in the environmental conditions and highlighted the existence of heterogeneous abiotic conditions (p<0.05). However, the multiple comparisons test showed the existence of homogeneous spatial conditions (p>0.05) regarding the fish assemblage structure. The multivariate analysis showed no significant relationship between existing environmental conditions and the fish assemblage (p=0.04). The analysis also showed the absence of a relationship between the fish assemblage and environmental variables with respect to the flood pulse and sampling sites (p>0.05). Conclusion The uniformity of the fish communities that inhabit aquatic macrophyte patches in the littoral region of the ASC may be related to the availability of suitable habitat in structural terms, that probably supports a more abundant and varied wildlife.

scholarly journals Spatial and temporal variation of fish assemblage structure in a neotropical Mexican river

2021 ◽  
Vol 92 (0) ◽  
pp. 923433
Author(s):  
Valentin Mar-Silva ◽  
Yvonne Herrerías-Diego ◽  
Martina Medina-Nava ◽  
Juan Pablo Ramírez-Herrejón ◽  
Luis Mendoza-Cuenca ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Fish Assemblage ◽  
Assemblage Structure ◽  
Spatial And Temporal Variation ◽  
Fish Assemblage Structure

scholarly journals Spatial and temporal variation in fish-assemblage structure in isolated waterholes during the 2001 dry season of an arid-zone floodplain river, Cooper Creek, Australia

2005 ◽  
Vol 56 (1) ◽  
pp. 25 ◽  
Author(s):  
Angela H. Arthington ◽  
Stephen R. Balcombe ◽  
Glenn A. Wilson ◽  
Martin C. Thoms ◽  
Jon Marshall
Keyword(s):  
Temporal Variation ◽  
Fish Assemblage ◽  
Fish Assemblages ◽  
Arid Zone ◽  
Dry Season ◽  
Assemblage Structure ◽  
Spatial And Temporal Variation ◽  
Fish Assemblage Structure ◽  
Floodplain River ◽  
Floodplain Inundation

Spatial and temporal variation in fish-assemblage structure within isolated waterholes on the floodplains of Cooper Creek, Australia, was studied during the 2001 dry season, a period of natural drought in this arid-zone river. Spatial variation in fish-assemblage structure and the abundance of five species in disconnected waterholes early in the dry season (April 2001) were related to the extent of floodplain inundation 14 months previously, and to the interconnectedness of waterholes and waterhole habitat structure. As the dry season progressed, waterhole volumes decreased owing to evaporative water loss and structural habitat elements (anabranches, bars, boulders) became exposed. Marked changes in fish assemblage structure between the early (April) and late (September) dry season were related to habitat loss but not to water chemistry. Interactions between flow and habitat across a nested hierarchy of spatial scales (the floodplain, the waterhole and habitat patches within waterholes) were crucial to the persistence of fish assemblages through the 2001 dry season. We conclude that the magnitude, timing and frequency of floodplain inundation and natural variations in waterhole volume must be maintained if we wish to sustain the distinctive habitats and fish assemblages of this arid-zone floodplain river.

scholarly journals Nondestructive Monitoring of Soft Bottom Fish and Habitats Using a Standardized, Remote and Unbaited 360° Video Sampling Method

Fishes ◽  
2021 ◽  
Vol 6 (4) ◽  
pp. 50
Author(s):  
Delphine Mallet ◽  
Marion Olivry ◽  
Sophia Ighiouer ◽  
Michel Kulbicki ◽  
Laurent Wantiez
Keyword(s):  
Coral Reef ◽  
Sampling Method ◽  
Fish Assemblages ◽  
New Caledonia ◽  
Nondestructive Monitoring ◽  
Soft Bottom ◽  
Total Species Richness ◽  
Key Species ◽  
Bottom Fish ◽  
Soft Bottoms

Lagoon soft-bottoms are key habitats within coral reef seascapes. Coral reef fish use these habitats as nurseries, feeding grounds and transit areas. At present, most soft-bottom sampling methods are destructive (trawling, longlining, hook and line). We developed a remote, unbaited 360° video sampling method (RUV360) to monitor fish species assemblages in soft bottoms. A low-cost, high-definition camera enclosed in a waterproof housing and fixed on a tripod was set on the sea floor in New Caledonia from a boat. Then, 534 videos were recorded to assess the efficiency of the RUV360. The technique was successful in sampling bare soft-bottoms, seagrass beds, macroalgae meadows and mixed soft-bottoms. It is easy to use and particularly efficient, i.e., 88% of the stations were sampled successfully. We observed 10,007 fish belonging to 172 species, including 45 species targeted by fishermen in New Caledonia, as well as many key species. The results are consistent with the known characteristics of the lagoon soft bottom fish assemblages of New Caledonia. We provide future users with general recommendations and reference plots to estimate the proportion of the theoretical total species richness sampled, according to the number of stations or the duration of the footage.

Comparison of Fish Assemblages Sampled by a Shrimp Trawl and a Fish Trawl in St Vincent Bay, New Caledonia

1996 ◽  
Vol 76 (3) ◽  
pp. 759-775 ◽  
Author(s):  
Laurent Wantiez
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
New Caledonia ◽  
Temporal Patterns ◽  
Species Assemblages ◽  
Soft Bottom ◽  
Spatial And Temporal Patterns ◽  
Shrimp Trawl ◽  
Bottom Fish

The spatial and temporal patterns of variation of a tropical soft-bottom fish community sampled by a shrimp trawl and a fish trawl were compared at two sites, North and South Bay, of St Vincent Bay, New Caledonia. Results indicated that the species richness and particularly the species composition were related to the type of trawl. However, the overall density and biomass, species diversity, and evenness did not vary significantly as a function of gear type. The same species dominated the catches of the two trawl types, but differences appeared between density, biomass and mean weight of particular species, calculated from the shrimp and the fish trawl catches. The spatial variations of the community structure were comparable between the two gear types, though the composition of the species assemblages were not the same. Differences appeared for the temporal structures. These differences were insignificant in one of the sampled sites (North Bay), but more important in the other site (South Bay), where species diversity, size range of the individuals, and shape diversity of fishes were more important. However, the major differences between the community structures remained the same, independent of sampling gear type. These results validate studies comparing spatial and temporal patterns of variations in general characteristics (i.e. number of species per haul, density, biomass, species diversity and evenness) of tropical soft-bottom fish communities determined by shrimp and fish demersal otter trawls. This also validates the determination of species assemblages especially spatial assemblages. However, important problems may arise when more particular points are studied, such as species composition of the communities, determination of the characteristic species of the assemblages, or study of a particular species.

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