Richness and distribution of sponge megabenthos in continental margin canyons off southeastern Australia

@article{Schlacher2007RichnessAD,
  title={Richness and distribution of sponge megabenthos in continental margin canyons off southeastern Australia},
  author={Thomas A. Schlacher and Monika A. Schlacher-Hoenlinger and Alan Williams and Franziska Althaus and John N A Hooper and Rudy J Kloser},
  journal={Marine Ecology Progress Series},
  year={2007},
  volume={340},
  pages={73-88}
}
Submarine canyons are spectacular topographical features that intersect the continen- tal margins of the world's oceans. Canyons comprise unique habitats in terms of complexity, instabil- ity, material processing, and hydrodynamics, and they may support diverse assemblages of larger epibenthos. Yet, quantitative data on the biodiversity of the megabenthos in canyons are scant. Con- sequently, we quantified the diversity of sponges (a key and dominant group of the megabenthos) in 5 canyons… Expand
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References

SHOWING 1-10 OF 78 REFERENCES
Macrofaunal communities within and adjacent to a detritus-rich submarine canyon system
Abstract Macrofaunal abundance, biomass, diversity and species assemblages within Scripps and La Jolla Submarine Canyons are compared with those on the nearby continental shelf and slope. Our primaryExpand
Deep-water decapod crustacean communities in the Northwestern Mediterranean: influence of submarine canyons and season
TLDR
There were seasonal variations, with higher densities of mesopelagic species in spring, which were probably related, among other factors, to variations in the photoperiod, together with seasonal changes in the megafaunal biomass. Expand
Distribution and species composition of mass occurrences of large-sized sponges in the northeast Atlantic
Abstract The geographic and bathymetric distribution of “ostur”, that is mass occurrences of large-sized astrophorid demosponges, first recognized at the Faroe Islands during the internordic BIOFARExpand
Seamount benthic macrofauna off southern tasmania: community structure and impacts of trawling
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;Expand
Observations on bottom currents and epibenthic populations in Hatteras submarine canyon
Abstract Bottom currents and populations of large epifauna were surveyed using bottom photography in the Pamlico axis of the Hatteras Submarine Canyon system. Most species known to be numericallyExpand
The influenceof hexactinellid sponge (Pheronema carpenteri) spicules on the patchy distribution of macrobenthos in the porcupine seabight (bathyal ne atlantic)
TLDR
Analysis of data on the abundance and taxonomic composition of major groups of the larger (> 1 mm) macrobenthos suggests that the presence of sediment surface sponge spicule mats substantially modifies the fauna at the 1250 m station. Expand
Marine sponges of the Dampier Archipelago, Western Australia: patterns of species distributions, abundance and diversity
TLDR
The number of species found at only one location was high, supporting previous findings that northwestern Australia has high sponge endemism, andEstimations of diversity based on non-parametric modelling suggests that there are potentially more species than presently recorded in the archipelago. Expand
Small-scale patterns of sponge biodiversity (Porifera) on Sunshine Coast reefs, eastern Australia
TLDR
Ten reefs off the Sunshine Coast, south-eastern Queensland, were sampled from 1991 to 2000 and were found to contain a rich fauna of 247 species of marine sponges (Porifera) in 97 genera, 44 families and 14 orders, representing a highly unique fauna in this biogeographic transition zone between the Solanderian and Peronian provinces. Expand
Assessing the magnitude of species richness in tropical marine environments: exceptionally high numbers of molluscs at a New Caledonia site
TLDR
A massive collecting effort involving 400 day-persons at 42 discrete stations on a 295-km2 site on the west coast of New Caledonia, south-west Pacific, revealed 2738 species of marine molluscs, several times the number of species recorded from any area of comparable extension anywhere in the world. Expand
Habitat-specific distribution of Pacific ocean perch (Sebastes alutus) in Pribilof Canyon, Bering Sea
Shelf edge canyons are well-known sites of enhanced biomass due to on-shore transport and concentration of zooplankton along their axes, both of which contribute to the high densities of nektonExpand
...
1
2
3
4
5
...