Depth and the Structure of Assemblages of Demersal Fish: Experimental Trawling Along a Temperate Coast

Connell, Sean D.; Lincoln-Smith, Marcus P.

doi:10.1006/ecss.1998.0438

Cited by 26 publications

(28 citation statements)

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“…Jacob et al (1998) explored the relationship between fish assemblages, temperature, and depth in the subantarctic. The relationship between fish assemblages and depth in these studies suggest that New Zealand fish communities conform to patterns observed on the shelf and upper slope in other areas of the globe (e.g., Bianchi 1992;Gomes et al 1992;Fujita et al 1995;Connell & Lincoln-Smith 1999;Fischer & Haedrich 1999).…”

Section: Introductionsupporting

confidence: 62%

Upper‐slope fish communities on the Chatham Rise, New Zealand, 1992–99

Bull¹,

Livingston

Hurst

et al. 2001

New Zealand Journal of Marine and Freshwater Research

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Catch rate data for fish species caught in 200-800 m depths during summer trawl surveys of the Chatham Rise to the east of New Zealand in 1992-99 were explored to assess community structure and species associations and to identify changes that occurred within the time series of surveys. The community was dominated by hoki (Macruronus novaezelandiae Hector), a Southern Hemisphere merlucciid hake, which was more abundant than all other species combined and occurred at 97% of the 1048 trawl stations. Three groupings offish species were identified on the basis of descriptive and cluster analyses, associated with the 200-350, 350-550, and 550-800 m depth ranges. Redundancy analysis showed that depth, latitude, and to a lesser extent longitude explained most of the variation in abundance and composition of catches. Spatial patterns in species diversity and fish density were investigated. Trends within the time series show a significant decline in the biomass of hoki and changes in biomass of several other abundant species. However, there was little change in diversity, density, or division into groupings. The changes in abundance may be related to increased fishing activity and/or other factors such as changes in catchability because of the rising bottom temperatures observed during the surveys. M00060

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Section: Introductionsupporting

confidence: 62%

Upper‐slope fish communities on the Chatham Rise, New Zealand, 1992–99

Bull¹,

Livingston

Hurst

et al. 2001

New Zealand Journal of Marine and Freshwater Research

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“…Relatively small differences in water depth have also been shown to be accompanied by changes in ichthyofaunal composition in temperate waters on the south-east and south-west coasts of Australia (Connell & Lincoln-Smith 1999, Hyndes et al 1999. Although ichthyofaunal composition did not tend to be related more to water depth than season or vice versa across the locations sampled in our study, it was shown to be consistently related more to water depth than to season over soft substrata along the coasts of Angola (Bianchi 1992) and west coast of Australia (Williams et al 2001).…”

Section: Relationships Between Species Composition and Depthmentioning

confidence: 99%

“…These biotic variables also vary with distance from shore, due to certain species tending to occupy either shallow or deeper waters and/or moving into and out of areas at different stages in their life cycle (e.g. Bianchi 1992, Blaber et al 1994b, Connell & Lincoln-Smith 1999, Gaertner et al 1999, Hyndes et al 1999. Although the species compositions of fish communities often change cyclically during the year (e.g.…”

Section: Introductionmentioning

confidence: 99%

Relationships between latitude and environmental conditions and the species richness, abundance and composition of tropical fish assemblages over soft substrata

Travers¹,

Potter²,

Clarke³

et al. 2012

Mar. Ecol. Prog. Ser.

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Large-scale studies are required to elucidate the environmental factors that structure faunal communities. The relationships between the characteristics of the coastal ichthyofaunas over the soft substrata of tropical north-western Australia and both latitude and environmental factors were thus explored by analysing trawl data obtained for deep and shallow inshore waters at 7 regularly spaced locations along this 1500 km coast during both the dry and wet seasons. In the dry season, species richness and density were greater in the Kimberley and Pilbara bioregions than in the intervening Canning bioregion, where, in contrast to particularly the Kimberley, rivers and mangroves are largely absent. Species richness and density were greatest in the most northern bioregion (Kimberley) during the wet season, when nutrient input from rivers and water temperatures were highest. The high species richness and density at 1 Canning location during the wet season was presumably related to increased productivity brought about by local cyclonic events. Ichthyofaunal compositions in the Kimberley differed markedly from those in the Canning and Pilbara, where tidal range was less and water clarity greater due, in particular, to far greater densities of leiognathids and terapontids. Compositions at all locations in the dry season differed from those in the wet, when chlorophyll a concentrations and/or water temperatures were greatest and large numbers of certain species were recruited. Ichthyofaunal composition at each location almost invariably differed markedly between water depths, reflecting, inter alia, the tendency for some species to use nearshore waters as nursery areas and for others to occupy particular habitats.

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“…Other investigators found that the distributions of fish assemblages were related to environmental gradients including light level, oxygen content, pressure, and sediment properties (Cartes and Sarda, 1993;Gomes et al, 1992;Moranta et al, 1998;Jacob et al, 1998). All these factors vary with depth and furthermore may affect fish assemblages in different combinations that are not yet known (Connell and Lincoln-Smith, 1999). Temperature and salinity are also thought to play an important role in determining the zonation of faunal assemblages (Fujita et al, 1995;Jacob et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

The Deep-sea Fish Fauna of the Northern Gulf of Mexico

Atlantic¹,

Powell²,

Haedrich³

et al. 2003

J. Northw. Atl. Fish. Sci.

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As a part of the Deep Gulf of Mexico Benthos (DGoMB) project, fishes were sampled in May and June 2000. Thirty-seven stations were occupied using a 40' semi-balloon otter trawl along transects which ran from shallow to deep water and from northern Florida to off southern Texas. A total of 1 065 individuals in 119 demersal fish species were taken. Cluster analyses showed the fish fauna is zoned with depth. Assemblages were identified on the shelf (188216 m), upper slope (315785 m), mid-slope (6861 369 m), and in a deep zone (15333 075 m). The most abundant species found on the shelf was the small caproid Antigonia capros. On the upper slope Caelorinchus caribbaeus and Steindachneria argentea, from Macrouridae and Steindachneriidae respectively, were dominant. On the mid-slope the fauna is dominated by Macrouridae: Nezumia cyrano and Coryphaenoides zaniophorus. The deep zone is dominated by Ophidiidae: Dicrolene kanazawai and Acanthonus armatus. Species richness is highest on the upper slope (48 species) and decreases with depth; the deep zone has 32 species. Abundance, too, is greatest on the upper slope, especially in the Mississippi Trough and DeSoto Canyon, and declines greatly with depth. Data on fishes support the DGoMB hypothesis relating to depth zonation, refute the hypothesis relating to eastwest abundance, but, because of limited samples, are inconclusive regarding fauna in and out of basins. There do not appear to be species of commercial interest in the deep demersal fish fauna.

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Depth and the Structure of Assemblages of Demersal Fish: Experimental Trawling Along a Temperate Coast

Cited by 26 publications

References 0 publications

Upper‐slope fish communities on the Chatham Rise, New Zealand, 1992–99

Upper‐slope fish communities on the Chatham Rise, New Zealand, 1992–99

Relationships between latitude and environmental conditions and the species richness, abundance and composition of tropical fish assemblages over soft substrata

The Deep-sea Fish Fauna of the Northern Gulf of Mexico

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