. Abstract: In an oligotrophic coastal zone, land drainage and atmospheric precipitation can temporarily modify the concentrations of specific dissolved compounds in local surface waters, mainly nutrient salts, setting up conditions for "new" primary production of phytoplankton. The Ubatuba region (23°30'S 45°06'W) is considered an oligo-mesotrophic region subject to a high average annual preci...

Reservoirs are manmade habitats, intermediate between rivers and lakes, presenting distinct hydrological and morphometric characteristics, with differential mean water residence time. They also present proper vertical and horizontal organisations, and their evolution depends on several variables acting on different special and temporal scales. The water quality evolution of the Itaipu Reservoir...

Abstract Darwin Harbour is a working port and the most populated city in Northern Territory of Australia. This macrotidal estuary located wet–dry tropics Australia notwithstanding mounting development pressures region, largely unmodified. The prevailing oligotrophic condition estuarine waters suggest that biogeochemical cycling sediments remain active, buffering influence anthropogenic inputs. ...

Introduction Holothuria tubulosa is one of the most common sea cucumbers in Mediterranean Sea, generally associated with organically enriched coastal sediments and seagrass beds. As a deposit-feeder, it responsible for strong bioturbation processes plays putative key role sedimentary carbon cycling benthic trophodynamics. With aim exploring potential use holothuroids as tool remediating eutroph...

An underwater volcanic eruption off the Vava’u island group in Tonga on 7 August 2019 resulted creation of floating pumice ocean’s surface extending over an area 150 km2. The pumice’s far-reaching effects from its origin region to Fiji and methods automatic detection using satellite imagery are described, making it possible track westward drift raft 43 days. Level 2 Moderate Resolution Imaging ...