the spanish turbot aquaculture sector holds a top position in the international market. thisactivity is mainly developed along the galician coast (nw spain). this article evaluates the environmentalperformance of galician turbot aquaculture according to the life cycle assessment (lca) methodology.previously, on account of the expected relevance of feed for aquaculture, marine aquafeed productio...

A summary of knowledge and recommendations for the conservation of marine birds and their habitats throughout the California Current Large Marine Ecosystem.

in the first experiment, twelve species of the most plentiful and fresh seaweeds and one species of seagrass from the beach were collected at kingston, south australia. all species were then separately sun-and oven-dried and ground. the ground samples were analysed for dry matter, ash, organic matter, crude protein, crude fibers, ether extract and digestibility in vitro. the digestible and ...

This paper presents some considerations about environmental consequences of the spills and also about oil spill detection and control. Afterwards, it presents a computational structure that has been developed to forecast the time-space evolution of oil spills in marine environments. This structure was developed based on widely used mathematical formulations for oil spreading and weathering proc...

The fundamental constraint shaping animal systems for internal gas transport is the slow pace of diffusion [1]. In response, most macroscopic animals have evolved systems for driving internal flows using muscular pumps or cilia. In arthropods, aside from terrestrial lineages that exchange gases via tracheal systems, most taxa have a dorsal heart that drives O2-carrying hemolymph through periphe...

A coupled particle-tracking/ocean circulation model of an idealized eastern boundary upwelling current is used to explore the mesoscale pathways of larval transport. We find that simulated larvae are often organized into filaments found between mesoscale eddies that correspond to attracting Lagrangian coherent structures (LCS). Such structures are material curves that map filamentation and tran...

On the use of mass-conserving wind fields in chemistry-transport models B. Bregman, A. Segers, M. Krol, E. Meijer, and P. van Velthoven Royal Netherlands Meteorological Institute, P.O. Box 201, 3730 AE, De Bilt, Netherlands Institute for Marine and Atmospheric Research Utrecht, Princetonplein 5, 3584 CC, Netherlands Received: 30 August 2002 – Accepted: 16 October 2002 – Published: 28 October 20...

Lagrangian transport modelling for CO2 using two different biosphere models G. Pieterse, A. T. Vermeulen, I. T. Baker, and A. S. Denning Energy research Centre of the Netherlands, Petten, The Netherlands Institute for Marine and Atmospheric Research Utrecht, Utrecht, The Netherlands Colorado State University, Fort Collins, USA Received: 4 December 2007 – Accepted: 11 January 2008 – Published: 2...

Sulfate transport capacity was not regulated by cysteine, methionine, or glutathione in Pseudomonas halodurans, but growth on sulfate or thiosulfate suppressed transport. Subsequent sulfur starvation of cultures grown on all sulfur sources except glutathione stimulated uptake. Only methionine failed to regulate sulfate transport in Alteromonas luteo-violaceus, and sulfur starvation of all cultu...

An increase in ambient carbonaceous particle (CNP) levels has been found, potentially leading to significant environmental/health hazards. These particles will ultimately enter the oceanic environment and interact with dissolved organic carbon. However, a detailed mechanistic understanding of their behavior, transport, and fate in marine systems is still much needed. This study, using carbon bl...