Holguin-Gonzalez J.E.,Ghent University |
Holguin-Gonzalez J.E.,Autonomous University of Occidente |
Boets P.,Ghent University |
Everaert G.,Ghent University |
And 7 more authors.
Water Science and Technology | Year: 2014
Worldwide, large investments in wastewater treatment are made to improve water quality. However, the impacts of these investments on river water quality are often not quantified. To assess water quality, the European Water Framework Directive (WFD) requires an integrated approach. The aim of this study was to develop an integrated ecological modelling framework for the River Drava (Croatia) that includes physical-chemical and hydromorphological characteristics as well as the ecological river water quality status. The developed submodels and the integrated model showed accurate predictions when comparing the modelled results to the observations. Dissolved oxygen and nitrogen concentrations (ammonium and organic nitrogen) were the most important variables in determining the ecological water quality (EWQ). The result of three potential investment scenarios of the wastewater treatment infrastructure in the city of Varaždin on the EWQ of the River Drava was assessed. From this scenario-based analysis, it was concluded that upgrading the existing wastewater treatment plant with nitrogen and phosphorus removal will be insufficient to reach a good EWQ. Therefore, other point and diffuse pollution sources in the area should also be monitored and remediated to meet the European WFD standards. © IWA Publishing 2014
Boets P.,Ghent University |
Thas O.,Ghent University |
Thas O.,University of Wollongong |
Van De Vijver E.,Ghent University |
And 5 more authors.
Ecological Informatics | Year: 2013
To date, approaches in environmental risk assessment (ERA) are based on taxonomy-based descriptions of ecosystems. Due to the widespread occurrence of numerous types of chemicals in the environment and ensuing environmental risks, there is a need to get insight in the relationship between the response of the ecosystem to pollution and the characteristics (traits) of the organisms. The main hypothesis of the present research is that the trait composition of macroinvertebrate communities changes in a consistent manner along general environmental disturbance gradients. In this study, the relationship between maximal body length of macroinvertebrates and environmental variables (e.g. Cu concentration) reflecting river sediment quality in Flanders (Belgium) was analysed. It was found that the abundance at almost all body lengths decreased with a decreasing quality of the river sediment, which could be associated with a decrease in abundance of macroinvertebrate taxa. It was also observed that the number of different body lengths decreased with increasing pollution, which can be linked to a decrease in diversity of the macroinvertebrate community. At low levels of general environmental pollution especially small taxa (<. 20. mm) experienced negative effects, but with increasing pollution also the abundance of larger taxa (>. 60. mm) decreased. The trend observed for general environmental pollution was further analysed for specific types of metal contamination. Basic and zero-inflated Poisson models showed that with increasing copper pollution, the abundance of larger taxa quickly decreased and only relatively small taxa remained abundant. However, the observed trend was not generally applicable for all contaminants. The results of this research indicate that by using only individual metal concentrations it is not possible to explain the shifts in size distribution of macroinvertebrates. Including other environmental characteristics and other traits could enhance the understanding of how the macroinvertebrate community composition responds to environmental disturbances.© 2013 Elsevier B.V.
Faasse M.A.,ECOAST Marine Research
Marine Biodiversity Records | Year: 2014
The north-west Atlantic amphipod Ptilohyale littoralis has been introduced to The Netherlands. After its initial discovery in the port of Rotterdam, additional specimens were collected near the national centre of shellfish trade and culture Yerseke and along the Westerschelde estuary, which leads to the port of Antwerp. © Marine Biological Association of the United Kingdom, 2014.
Lallier L.E.,ECOAST Marine Research |
McMeel O.,ECOAST Marine Research |
Greiber T.,Environmental Law Center |
Vanagt T.,ECOAST Marine Research |
And 2 more authors.
Natural Product Reports | Year: 2014
With the adoption of the Nagoya Protocol in 2010, an additional legal instrument under the Convention on Biological Diversity (1992), the legal landscape surrounding the access to and utilization of genetic resources will change. This is likely to impact working procedures for scientists, turning pre-existing ethics into legal obligations. The aim of this article is to inform scientists on the global access and benefit-sharing framework which has been set by the Convention on Biological Diversity and its Nagoya Protocol, focusing specifically on their application to marine genetic resources for which the United Nations Convention on the Law of the Sea (1982) also has relevance. © 2014 the Partner Organisations.
Hobbs N.-V.,University of Rhode Island |
Lazo-Wasem E.,Yale University |
Faasse M.,eCOAST Marine Research |
Cordell J.R.,University of Washington |
And 5 more authors.
Aquatic Invasions | Year: 2015
The Asian isopod Ianiropsis serricaudis is now well established in fouling communities, often associated with introduced ascidians, throughout the Northern Hemisphere but has gone largely unnoticed because of its diminutive size (typically less than 3 mm in length) and the difficulties of identifying small peracarid crustaceans. Known locations include the northeastern Pacific (Puget Sound, San Francisco Bay, and Monterey Bay), the northwestern Atlantic (from the Gulf of Maine to Barnegat Bay, NJ), and the northeastern Atlantic (England and the Netherlands). We predict that this species is widespread along North America and European coasts, and may already be introduced to cold temperate waters of the Southern Hemisphere as well. © 2015 The Author(s).
Cook E.J.,Scottish Association for Marine Science |
Stehlikova J.,Scottish Association for Marine Science |
Stehlikova J.,University of the Highland and Islands |
Beveridge C.M.,Scottish Association for Marine Science |
And 4 more authors.
Aquatic Invasions | Year: 2013
The invasive bryozoan, Tricellaria inopinata d'Hondt & Occhipinti Ambrogi, 1985 was first recorded in European waters in the early 1980's and has since been reported from 166 locations from the Mediterranean Sea to the north-east Atlantic coastline. This species is typically associated with human activity, including commercial and recreational vessels and aquaculture, where it has been found in abundance on boat hulls and propellers, floating pontoons and structures associated with shellfish cultivation. Tricellaria inopinata has a high tolerance to a wide range of salinities and temperatures, although following the harsh winter of 2010, populations disappeared in Germany suggesting that this species is near the northern limit of its range under current climatic conditions. It is expected to continue to disperse though, throughout the Mediterranean, English Channel, North and Celtic Seas. © 2013 The Author(s).
Faasse M.A.,eCOAST Marine Research |
Faasse M.A.,Netherlands Center for Biodiversity Naturalis |
Giangrande A.,University of Salento
Aquatic Invasions | Year: 2012
Bispira polyomma sp. nov. is described. The taxon was recently found on the SW coast of The Netherlands (NE Atlantic), and could not be referred to as any previously described species of the genus Bispira. The area has been thoroughly investigated in the past, therefore we hypothesize the species is a new introduction to The Netherlands. The tubeworm is able to settle massively on all kinds of hard substrates, is eurythermal and able to withstand slight pollution, and therefore wider dispersal is a possibility to reckon with. For this reason we give a taxonomic species description even though the genus needs further revision. Presently the taxon has been observed only near Yerseke, a centre of shellfish culture and trade with a marina. The taxon was found in 2010. Subsequent surveys revealed a very dense population had developed in 2011, with the presence of small individuals in summer 2011 suggesting successful reproduction. © 2012 REABIC.
Lock K.,ECOAST Marine Research |
Adriaens T.,Research Institute for Nature and Forest |
Goethals P.,Ghent University
Limnologica | Year: 2014
To assess the ecological water quality in Flanders (northern part of Belgium), macroinvertebrates have been collected by the Flemish Environment Agency. During the present study, the blackflies collected between 1997 and 2009 were identified to species level. In total, more than 44,000 specimens were identified, belonging to 12 different species. Sensitive species were restricted to small brooks, while species tolerating lower oxygen concentrations and higher nutrient concentrations were also present in larger watercourses. Several species were either restricted to watercourses in the Campine region (northeast Flanders) or the loamy region (southern Flanders), while the other regions only contained eurytopic species. The prevalence of blackflies increased from less than 5% to almost 30% in the nineties, but did not further increase during the next decade. Habitat suitability models (logistic regressions, artificial neural networks, support vector machines and classification trees) could accurately predict the presence or absence of blackflies. An ensemble forecast, based on predicted oxygen and nutrient concentrations due to planned water quality improvement strategies, predicted that blackflies prevalence will rise to 42% in 2015 and 64% in 2027. Since blackflies only possess a moderate sensitivity, they could occur in all types of running waters with a good water quality. As a good ecological status is required by the European Union Water Framework Directive for all surface waters, it is thus apparent that more efforts will be needed to improve the water quality in Flanders. © 2013 Elsevier GmbH.
Spilmont N.,Lille University of Science and Technology |
Spilmont N.,CNRS Laboratory of Oceanology and Geosciences |
Spilmont N.,Griffith University |
Hachet A.,Lille University of Science and Technology |
And 9 more authors.
Marine Biodiversity | Year: 2016
This paper presents the first record of Ptilohyale littoralis (Stimpson, 1853) and Boccardia proboscidea (Hartman, 1940) from the French coast of the eastern English Channel. This record is the second for P. littoralis in European waters following a record from the Netherlands, which is suspected as the site of initial introduction from the Atlantic coast of North America. The observed high densities (up to 270 ind. 0.25 m−2), together with the presence of ovigerous females, suggest that the species could be considered as naturalised in the area. Ptilohyale littoralis was consistently found in the same habitat (mussel beds) as Apohyale prevostii (Milne Edwards, 1830). There was an apparent spatial segregation between these two species and the melitid Melita palmata (Montagu, 1804), the latter being associated with boulders covered with mud. Boccardia proboscidea, native from the west coast of North America and Japan, has already been recorded in European waters (Spain, Ireland, North Sea and French coast of Bay of Biscay), but the present record is the first for the English Channel. The species was found inhabiting the same habitat as M. palmata, i.e. boulders covered with mud. Further investigations are, however, needed along the coast of the English Channel and the North Sea to clarify the pathways of introduction and the status (casual, naturalised or invasive) of P. littoralis and B. proboscidea in European waters. © 2016 Senckenberg Gesellschaft für Naturforschung and Springer-Verlag Berlin Heidelberg
PubMed | WaterWays, eCOAST Marine Research, Autonomous University of Occidente and Ghent University
Type: Journal Article | Journal: Water science and technology : a journal of the International Association on Water Pollution Research | Year: 2014
Worldwide, large investments in wastewater treatment are made to improve water quality. However, the impacts of these investments on river water quality are often not quantified. To assess water quality, the European Water Framework Directive (WFD) requires an integrated approach. The aim of this study was to develop an integrated ecological modelling framework for the River Drava (Croatia) that includes physical-chemical and hydromorphological characteristics as well as the ecological river water quality status. The developed submodels and the integrated model showed accurate predictions when comparing the modelled results to the observations. Dissolved oxygen and nitrogen concentrations (ammonium and organic nitrogen) were the most important variables in determining the ecological water quality (EWQ). The result of three potential investment scenarios of the wastewater treatment infrastructure in the city of Varadin on the EWQ of the River Drava was assessed. From this scenario-based analysis, it was concluded that upgrading the existing wastewater treatment plant with nitrogen and phosphorus removal will be insufficient to reach a good EWQ. Therefore, other point and diffuse pollution sources in the area should also be monitored and remediated to meet the European WFD standards.