Seamount benthic macrofauna off southern tasmania: community structure and impacts of trawling

@article{Koslow2001SeamountBM,
  title={Seamount benthic macrofauna off southern tasmania: community structure and impacts of trawling},
  author={J. Koslow and K. Gowlett-Holmes and J. Lowry and T. O¹Hara and G. Poore and Alan Williams},
  journal={Marine Ecology Progress Series},
  year={2001},
  volume={213},
  pages={111-125}
}
The benthic macrofauna of a group of small seamounts south of Tasmania was surveyed with a dredge and camera to assess the impact of trawling for orange roughy (Hoplostethus atlanti- cus; Trachichthyidae) and the efficacy of a proposed marine reserve. The seamounts were generally 300 to 600 m high and the peaks ranged from 660 to 1700 m depth. The fauna was diverse: 262 spe- cies of invertebrates and 37 species of fishes were enumerated, compared with 598 species of inver- tebrates previously… Expand

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References

SHOWING 1-10 OF 35 REFERENCES
Diversity and endemism of the benthic seamount fauna in the southwest Pacific
TLDR
The discovery of more than 850 macro- and megafaunal species from seamounts in the Tasman Sea and southeast Coral Sea, of which 29–34% are new to science and potential seamount endemics have substantial implications for the conservation of this fauna. Expand
Benthic invertebrate bycatch from a deep‐water trawl fishery, Chatham Rise, New Zealand
TLDR
There is an urgent need to assess more fully the impact of trawling on seamount biotas and, in consequence, possible conservation measures. Expand
Composition and diversity of Crustacea Isopoda of the southeastern Australian continental slope
Abstract The continental slope of southeastern Australia is a complex hydrological region where sediments is biogenic and largely derived from the nearby shelf. The isopod fauna of the slope betweenExpand
Effects of bottom fishing on the benthic megafauna of Georges Bank
This study addresses ongoing concerns over the effects of mobile fishing gear on benthic communities. Using side-scan sonar, bottom photographs and fishing records, we identified a set of disturbedExpand
The mid-slope demersal fish community off southeastern Australia
Abstract The mid-slope (800–1200 m) demersal fish community off southeastern Australia was sampled at 376 random, depth-stratified trawl stations. The mean density of demersal species was 4.82 g m −2Expand
Energetic and life-history patterns of deep-sea benthic, benthopelagic and seamount-associated fish
TLDR
Large deep-water dispersed fish species are characterized by late maturity and an extended reproductive period, but these characteristics are less pronounced than in deep seamount-associated species, which may live in excess of 100 years. Expand
The impact of habitat disturbance by scallop dredging on marine benthic communities:what can be predicted from the results of experiments?
TLDR
The density of common macrofaunal populations at each site decreased as a result of dredging, with some populations still significantly different from the adjacent reference plot after 3 mo, which is considered a conservative assessment of bottom disturbance by fishing. Expand
Interactions of migrating zooplankton with shallow topography: predation by rockfishes and intensification of patchiness
Abstract Stratified net tows, multiple-frequency sonar and drifter drogues, combined with analysis of rockfish stomachs, were used to investigate the processes taking place when vertically migratingExpand
Corals on seamount peaks provide evidence of current acceleration over deep-sea topography
Geological and physical studies of seamounts have suggested the existence of distinct deep-sea habitats, characterized by exposed rocky bottom and a unique current regime1–9. However, few biologicalExpand
The impact of bottom trawling on benthic fauna of the North Sea
Abstract This paper reviews the impact of bottom trawling — beam- or groundtrawl — on animals of the sea bed. The area of study is restricted to the North Sea, however, the final conclusions have aExpand
...
1
2
3
4
...