News

Published on May 2, 2018
The VLIZ Marine Science Day (21st of March 2018) has become an established event for all marine and coastal scientists in Flanders/Belgium and its neighbouring regions. This years edition of this event was held at the MEC Staf Versluys with over 370 participants. We look back to VMSD with some pictures.

Published on April 23, 2018
Here, we aimed to document the interaction between EPA and cadmium (Cd), as model chemical stressor, in Daphnia magna. A life-history experiment was performed in which daphnid neonates were raised into adulthood on three diets of different lipid composition: (i) algae mix; (ii) algae mix supplemented with control liposomes; (iii) algae mix supplemented with liposomes containing EPA. Dietary liposome supplementation was found to protect adult daphnids against acute Cd challenge.           

Published on April 18, 2018
The effect of multiple stressors on marine ecosystems remains poorly understood and most of the knowledge available is related to phytoplankton. To partly address this knowledge gap, we tested if combining multimodel inference with generalized additive modelling could quantify the relative contribution of environmental variables on the population dynamics of a zooplankton species in the Belgian part of the North Sea.

Published on April 17, 2018

In collaboration with researchers from the Norwegian Institute for Water Research, we developed a framework to study the effects of combined environmental stress at the molecular level. This framework can provide a new way to tackle the challenges of combined stressors in risk assessment. Addressing these challenges is crucial as ecosystems are often exposed to a multitude of stressors, both chemical and natural.

Published on April 17, 2018

In collaboration with researchers from the French nuclear institute, we studied the effects of gamma radiation on the waterflea. We have observed that effect of gamma radiation o the methylation of DNA in the first generation of animals are transmitted to the subsequent unexposed generations of offspring (children and grandchildren). Studying the effects of radiation across multiple generations will give us a better insight into the effects of nuclear power plants and other sources of radiation on our ecosystems.

Published on March 15, 2018
Ecological risk assessment (ERA) is commonly based on single generation ecotoxicological tests that are usually performed at one standard temperature. We investigate the effects of nickel (Ni) on Daphnia magna reproduction at 15, 20 and 25°C along four generations.

Published on March 14, 2018

We are happy to announce that our colleague, Dimitri van de Perre, on March 14, 2018, defended his dissertation to earn his doctoral degree! During his PhD, his research focused on estimating and predicting risks of multiple stressors on aquatic communities. Congratulations, Dimitri! 

Published on March 5, 2018
The population structure of the non-indigenous calanoid copepod Pseudodiaptomus marinus (Sato, 1913) in the Belgian part of the North Sea (BPNS) is reported for the first time. Detailed P. marinus abundance data including sex and age class of the individuals was gathered on a monthly basis from February 2015 to February 2016 at six sites within the BPNS and Belgian harbors.

Published on February 27, 2018
Under natural conditions, organisms can experience a variety of abiotic (e.g. temperature, pH) and biotic (e.g. species interactions) conditions, which can interact with toxicant effects. By ignoring species interactions conventional ecotoxicological studies (i.e. single species tests) oversimplify the actual field situation. Here, we investigated whether temperature and interspecific competition affected the effects of zinc on a Daphnia longispina population.

Published on February 16, 2018
Urban regions of the world are expanding rapidly, placing additional stress on water resources. These water bodies receive chemical emissions arising from either single or multiple point sources, diffuse sources which can be continuous, intermittent, or seasonal. Thus, aquatic organisms in these water bodies are exposed to temporally and compositionally variable mixtures. We have delineated source-specific signatures of these mixtures for diffuse urban runoff and urban point source exposure scenarios to support risk assessment and management of these mixtures.

Pages