The invasive Pacific oyster Crassostrea gigas has since 2007 established populations in Norwegian waters. The origin of C. gigas found in Norway is unknown, but several plausible factors such as unusually warm water temperatures and persistent westerly winds during 2006 may have caused an inflow of larvae from the Danish Wadden Sea. The species is known to drastically change blue mussel beds and soft bottom areas into massive oyster reefs with negative impact on birds and other marine...

There are many shallow coral reefs and coral communities on pinnacles around Koh Kood, Trat Province and its vicinity where are located near the borderline between Thailand and Cambodia, in the eastern part of the Gulf of Thailand. Coral reefs in the Gulf of Thailand suffered a severe and extensive mass bleaching phenomenon in the summer months of 2010 and most coral taxa were affected in different levels of severity. Bleaching levels were relatively high at the eastern Gulf of Thailand....

Spatio-temporal variation in zooplankton community structure in the western subarctic North Pacific based on the historically collected zooplankton samples for 1960s - 2000, the Odate Collection, was investigated in relation to decadal climatic and hydrographic variations. Species and size structure of copepods in the region varied well responding the decadal dynamics of the subarctic and subtropical oceanic currents, Oyashio and Kuroshio, respectively.

Beta diversity, the variation in species composition among sites within a region, is a key concept for conserving and managing biodiversity. However, beta-diversity is rarely studied across the large spatial scales relevant for management, particularly in the marine environment.

   Globally, the coast is undergoing a process of degradation, due to increased population, increased demand for its resources and the uncontrolled urban development (Schlacher et al., 2008). This degradation is noticeable along of Andalusian coast where it has given priority to tourist development as the main engine of the economy of the community. Such use has a direct impact on invertebrates species inhabiting the beaches, and an indirect...

The Marine Strategy Framework directive enforces member states of Europe to achieve a good environmental status before 2020. For the first time in an European directive, an ecosystemic approach is explicitly stated. In this context, methodological approaches need to be implemented to develop indicators of biological diversity but also abundance and biomass. Subtidal rocky habitats have been little studied up to now, and the role of red algae habitats in terms of community structure,...