New Paramesochridae (Harpacticoida) records support the cosmopolitanism of benthic deep-sea copepods

submitted by: David_Thistle

A recent study of the large-scale biogeography of benthic deep-sea copepods discovered that species of Paramesochridae were found in South Atlantic abyssal plains and in the deep Southern Ocean. Nineteen morphospecies from four genera (Emertonia Wilson, 1932, Leptopsyllus T. Scott, 1894, Paramesochra T. Scott, 1892, Wellsopsyllus Kunz, 1981) were distinguished. For example, Emertonia andeep (Veit-Köhler, 2004) and E.

Reef Check Australia: promoting healthy coral reefs through scientific research, community education and marine conservation

submitted by: Marie-Lise_Schläppy
Reef Check Australia (RCA) is a not-for-profit organisation which has been training members of the Australian community in the Reef Check reef health monitoring method since 2001. The participants are SCUBA-divers who want to make a difference by collecting quantitative data on key indicator species and threats to reef health on the Great Barrier Reef and in South-East Queensland rocky reefs. In order to participate in surveys, volunteers must undertake an intensive training programme, at...

Deep Reefs - mapping biodiversity and connectivity of deep (>30m) marine habitats

submitted by: Joana_Boavida

Portuguese marine habitats and species occurring below 30m are greatly understudied and unprotected, due to lack of information associated to technological challenges. For example coral reefs were long seen as endemic to tropical areas and the discovery of extended Cold Water Coral reefs in temperate waters is so recent (<15 years) that their distribution is still mostly unknown.

Life at the edge of a range. Single-species test of «abundant-center hypothesis» with the common cockle Cerastoderma edule (Bivalvia:Cardiidae) populations from the Barents Sea

The assumption that species is most abundant in the centre of the range and declining towards the range edge is widely discussed in biogeographic literature. This assumption associates species' distributions with environmental effects on organismal performance and fitness. Field studies still didn't fully verify abundant-center distribution because usually range edge populations are undersampled relative to the range centre.

The importance of biodiversity for maintaining the ecosystem goods and services in soft bottoms from Mediterranean continental shelves.

submitted by: Silvia_de

The loss of biodiversity caused by human activities in coastal areas has become a main concern due to the negative consequences for the ecosystem function. At the same time, these areas have special importance for the good and services they provide. In particular soft-bottoms from continental shelves, including benthic organisms and the associated sediments, play crucial roles in many ecosystem functions and these communities support a large fraction of the living resources worldwide.

A new species of Exitomelita (Amphipoda, Melitidae) found on a woodfall in the abyssal Norwegian-Greenland Sea

submitted by: Anne_Tandberg

The newly erected Amphipod-genus Exitomelita (Tandberg et al, in subm) has so far only been found associated with the deep-water hydrothermal vent field "Loki's Castle" in the Norwegian-Greenland Sea. There it was found on the black smoker chimney walls as well as within fields of the tube worm Sclerolinum contortum in sulfide- and methane rich sediments surrounding the vent field. A new species has now been found in a large wood-fall of pine at 2800 m depth close to this vent-field.

The Cruise of HMS Challenger - an Oceanographic Legacy for the Future

submitted by: Tim_Ferrero

On 21 December 1872 HMS Challenger sailed from Portsmouth on a three and a half year, 69,000 mile voyage voyage of global marine exploration. Over 350 official ‘stations' were sampled and the results laid the foundations of almost every branch of oceanography as we know it today.

Effect of trawling on the diversity of demersal fishes

submitted by: Giovanni_D'Anna

Trawling is one of the heaviest human impact for marine benthic communities. The effects of trawling on the diversity of demersal fishes were studied in 2005 by comparing the catches in three gulfs located in northern Sicily (central Mediterranean Sea), one of which protected from trawling since 1990. The factors considered in the data analysis were Locality (one protected and two un-protected gulfs), Season (Spring and Autumn), and depth Stratum (10 - 50 m, 51-100 m, 101-200 m).

Spontaneous bioluminescence on the deep-sea floor

submitted by: Jessica_Craig

Spontaneous bioluminescence in the deep sea is estimated to be extremely low. Observations of spontaneous bioluminescence using an ultra-low-light video camera at a solitary rock populated with sessile fauna on the Mid Atlantic Ridge (49.022°N, 27.693°W) revealed bioluminescent activity was 155 times higher than predicted background levels at 2000-3000m, prompting a reappraisal of the visual environment in the deep sea.