A5062417527- Marine and fisheries research
- Environmental Conservation and Management
- Fish Ecology and Management Studies
- Coastal and Marine Management
- Marine Bivalve and Aquaculture Studies
- Marine animal studies overview
- Coastal wetland ecosystem dynamics
- Environmental Science and Water Management
- Soil and Water Nutrient Dynamics
- Fish Biology and Ecology Studies
- Peatlands and Wetlands Ecology
- Reproductive biology and impacts on aquatic species
- Water Quality and Pollution Assessment
- Aquatic Invertebrate Ecology and Behavior
- Environmental and Sediment Control
- Aquatic and Environmental Studies
- Energy, Environment, Agriculture Analysis
- demographic modeling and climate adaptation
- Hydrology and Sediment Transport Processes
- Maritime Ports and Logistics
- Comparative and International Law Studies
- Hydrology and Watershed Management Studies
- 3D Modeling in Geospatial Applications
- Environmental Policies and Emissions
- Dutch Social and Cultural Studies
Wageningen University & Research
2007-2024
Ministry of Agriculture, Nature and Food Quality
2023
Marine Biological Laboratory
2002
Cornell University
2002
In view of the rapid extension offshore wind farms, there is an urgent need to improve our knowledge on possible adverse effects underwater sound generated by pile-driving. Mortality and injuries have been observed in fish exposed loud impulse sounds, but levels at which (sub-)lethal occur limited for juvenile adult fish, virtually non-existent eggs larvae. A device was developed larvae can be sound. It consists a rigid-walled cylindrical chamber driven electro-dynamical projector. Samples...
Growth rates are generally obtained from back‐calculation of increments otolith readings and based on the assumption that mean annual growth can be scaled directly to distance between age rings. Although otoliths continue grow even when somatic ceased. To analyse yellow eel, a passive integrated transponder (PIT) mark‐recapture study was performed in four water bodies (Delfland, Markiezaatsmeer, Süderpolder Vinkeveense Plassen) Netherlands. PIT‐tags were used as an alternative method instead...
Abstract Dickey-Collas, M., Pastoors, M. A, and van Keeken, O. A. 2007. Precisely wrong or vaguely right: simulations of noisy discard data trends in fishing effort being included the stock assessment North Sea plaice. – ICES Journal Marine Science, 64: 000–000. assessments plaice are routinely carried out with eXtended Survivors Analysis (XSA), based on landings survey data. Recently, discarded young fish, sampled high variance. Fishing has been declining since mid-1990s, so conditioning...
Abstract Borges, L., van Keeken, O. A., Helmond, A. T. M., Couperus, B., and Dickey-Collas, M. 2008. What do pelagic freezer-trawlers discard? – ICES Journal of Marine Science, 65: 605–611. Estimates discards by the Dutch freezer-trawler fleet were derived based on data from observers board commercial vessels. In all, 27 fishing trips duration 2–5 weeks each sampled between 2002 2005, covering North Sea western waters British Isles. Different methods to estimate compared, raising these...
Abstract Diadromous fish such as the European eel ( Anguilla anguilla L.) are hampered by a high density of barriers in estuaries and freshwater systems. Modified fragmented waterbodies lack tidal flows, habitat may be less accessible underutilized compared to free-flowing rivers estuaries. With rising sea levels increased occurrence droughts, number further increase, implying that need study migration areas even become more urgent worldwide. To glass behaviour highly modified water systems,...
Globally, biogenic temperate reefs are among the most threatened habitats. In North Sea in particular, large shellfish were lost owing to fishing activities 1900s. The impact of offshore wind farms (OWFs) on marine wildlife is extensive, and it offers possibility reintroduce new hard substrate habitats that protected from fisheries at a scale. addition submerged structures OWFs, habitat can be further enhanced by providing extra artificial reefs. an operational OWF along Dutch coast, four...
Abstract European eel, Anguilla anguilla L., migrating to the sea encounter many man‐made structures that can hamper and delay migration or induce mortality. Studying small‐scale behavioural movements in front of these could provide insight further mitigating adverse effects. The behaviour eel approaching a trash rack large pumping station was investigated using dual‐frequency identification sonar (DIDSON). Eels swam through (40.5%) but also showed turning at (44.7%) (14.7%). had varying...
Current rates of habitat loss require science-based predictions on how to restore or newly create lost types. In aquatic ecosystems, littoral zones are key habitats for food web functioning, but they often replaced by unnatural steep shorelines water safety. To reverse this trend, knowledge is needed successfully (re)create zones. We quantified the response an large-scale creation new heterogeneous in shallow lake Markermeer, Netherlands. Lake Markermeer was formed dike construction a former...
Freshwater fish communities typically thrive in heterogenous ecosystems that offer various abiotic conditions. However, human impact increasingly leads to loss of this natural heterogeneity and its associated rich communities. To reverse trend, we need guidelines on how effectively restore or recreate habitats for multiple species. Lake Markermeer the Netherlands is a human-created 70,000-ha lake with uniform 4 m-water depth, steep shorelines, high wind-induced turbidity, declining...
Abstract Passage success of sea lampreys Petromyzon marinus and behaviour in the vicinity man‐made structures such as marine–freshwater barriers are poorly understood. To mitigate these migratory problems, a better understanding passage is needed. investigate this, 25 were tagged with V7 VEMCO acoustic transmitters at large marine‐freshwater barrier, consisting ten sluice gates ship lock complex Netherlands. Overall was assessed to be 16%, four passing gates, while none passed locks....
Abstract European eel, Anguilla anguilla (L.), migrating to sea encounter many man‐made structures that can hamper and delay migration or induce mortality. Three pumping stations in Friesland, the Netherlands, were covered with acoustic receivers. Ninety‐three silver eels tagged transmitters released polders upstream of 89% detected passing a station. The majority passed within day after arriving at Four stayed for longer than 2 weeks before passage, 18 receiver downstream station more one...
Abstract Soft shoreline engineering is increasingly used to combine fortification with the enhancement of biodiversity and biological production land–water transitions. From 2016 2021, large‐scale ecosystem restoration project Marker Wadden has created new multiple wetland islands from local sediments in highly modified Lake Markermeer, Netherlands. Instead replacing steep rip‐rap shorelines soft shorelines, transitions were engineered offset marked declines bird fish populations this Natura...