MEPS

The potential effects of ocean warming on marine predators are largely unknown, though the impact on the distribution of prey in vertical space may have far reaching impacts on diving predators such as southern elephant seals. We used data from satellite-tracked southern elephant seals from Marion Island to investigate the relationship between their dive characteristics (dive depths, dive durations and time-at-depth index values) and environmental variables (temperature at depth, depth of maximum temperature below 100 m, frontal zone and bathymetry) as well as other demographic and behavioural variables (migration stage, age-class, track day and vertical diel strategy). While other variables, such as bathymetry and vertical diel strategy also influenced dive depth, our results consistently indicated a significant influence of temperature at depth on dive depths. This relationship was positive for all groups of animals, indicating that seals dived to deeper depths when foraging in wa...

Field surveys were conducted in Core and Back Sounds, North Carolina, USA, to relate the physical setting of seagrass beds, as measured by a wave exposure index (REI), tidal current speed and water depth, to various measures of the sedimentary environment, spatial heterogeneity of seagrass distribution and measures of seagrass abundance. Seagrass beds in this area form patterns ranging from

The present thesis was elaborated aiming to obtain the master’s degree in pharmaceutical sciences. In here, it is described all the scientific investigation work done to reach the proposed objective, as well as all tasks and learnings that I have taken along my community and hospital pharmacy internships. Chapter 1 is related with my scientific investigation work entitled “Bioanalytical method validation of Venlafaxine and Desvenlafaxine in mouse plasma, brain and liver using a MEPS/HPLC assay: a path to study these drugs’ intranasal administration”. Since major depressive disorder is one of the most prevalent psychiatric diseases, its therapeutic successful rate must be increased. Nowadays, the majority of all antidepressants used are given orally, being this route a source of therapeutic problems, mainly in what concerns with the time and dosage required to accomplish the desired effects. So, in order to improve it, intranasal administration route has been investigated, once parts...

Three marine diatom species (Cyclotella sp., Nitzschia closterium and Thalassiosira nordenskioldii) were exposed to a range of daily doses of ultraviolet B radiation (UVBR: 280-320 nm). The lowest UVBR treatments (<2000 J m -2 d -1 , DNA weighted ...

ABSTRACT: Modelling physical–biological interactions in the early life of fish is becoming an integral part of theoretical and applied marine ecology. A workshop on 'Advancements in modelling physical–biological interactions in fish early-life history' (WKAMF) was held in April 2006 ...