The effects of fish farming on the marine environment in two Specially Protected Areas on the Turkish coast of the Aegean Sea

submitted by: Nazli_Demirel

Water quality investigations and underwater visual observations were carried out in ten fish farms located at Datça-Bozburun and Gökova specially protected areas (southern Aegean Sea, Turkey). Investigations revealed that the substrate was disturbed and species composition changed as a consequence of increased sedimentation and excessive nutrient input at the vicinity of fish farms where the current velocity was low.

Investigating stock structure in Sardinops sagax in the southern Benguela region using microsatellites.

submitted by: Shannon_Hampton
Small pelagic fish are characterised by large population size and an extended larval duration. They are found over wide geographical distances with limited barriers to gene flow. It is thus important to investigate the extent of limited genetic differentiation in such populations. Several studies have explored genetic structuring in small pelagic species around the world. The level of genetic structuring in southern Benguela sardine ( Sardinops sagax) is currently under investigation,...

Phylogeny of glass sponges (Hexactinellida: Hexasterophora): An analysis based on morphological characters

submitted by: Dorte_Janussen
The Porifera class Hexactinellida is a classical deep-sea sponge taxon, with few exceptions (e. g. Rossellidae of the Antarctic shelf) occurring below 1000 m. In a joint project with WG of Gert Wörheide (Munich Univ.) (DFG: JA1063/13,1-3, WO896/5,1-4), we investigate the phylogenetic relationships of this (maybe oldest) animal old taxon; promising for understanding of Early Metazoan evolution. Since the Cenozoic hexactinellid sponges are almost exclusively restricted to deep water...

Protecting what we know: the need for mapping of soft-coral habitats for MPA design in Malta

submitted by: Alan_Deidun

Paramuricea clavata is considered as one of the main representative species of gorgonian soft corals in view of its attractive shape, impressive size and density, and is used in many studies to illustrate the importance of plankton-benthos coupling. P. clavata is typically reported from sciaphilic, near-horizontal rocky walls and its presence was never previously recorded from Maltese coastal waters. It is not even designated in local environmental legislation as a protected species.

Taking the Temperature of ancient Organisms

submitted by: UMiami_RSMAS

UM Rosenstiel School professor Peter Swart talks about the the Rosenstiel School's acquisition of two new stable isotope mass spectrometers that allow for Clumping, which is the process of directly measuring rare isotopes of carbon and oxygen. Clumping allows scientists to directly measure the temperatures of organisms, such as dinosaurs or those located in ancient seas.