NIVA Denmark

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NIVA Denmark Water Research is an independent non-profit unit focusing on research and consulting supporting evidence-based implementation and reporting of the Water Framework Directive and the Marine Strategy Framework Directive as well as other EU Directives (e.g. MSPD and Natura 2000).

At NIVA Denmark Water Research we are a mix of experienced scientists and experts passionate about the application of the best available knowledge when implementing evidence-based management strategies. We work in streams, rivers, lakes, estuaries, coastal waters and offshore marine waters. Our key research areas are: biodiversity, nutrient enrichment and eutrophication, climate change, hazardous substances including litter and microplastics, physical modification, ecosystem health as well as the multiple human activities potentially impairing aquatic ecosystems. Hence, we develop and test indicators, monitoring methods and assessment tools with an ultimate aim of carrying out ecological analyses and synthesises related to the current environmental challenges in aquatic ecosystems.

NIVA Denmark Water Research is formally a regional office of Norwegian Institute for Water Research. Hence, we are backed by more than 350 dedicated experts and aquatic research scientists.

Our team


Nikolai Friberg portrett 2021Nikolai Friberg, Research and Office Manager (PhD) and has more than 25 years research experience within the field of freshwater ecology from working both in Denmark and abroad. NFs main research focus has been on applied issues and how anthropogenic disturbances impact freshwater communities, climate change and river restoration. NF is an Appointed Expert for the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) under UNESCO and also a Visiting Research Fellow at University of Leeds, UK.
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Foto JHA_IMG_4328Jesper H. Andersen, Chief Scientist (PhD). JHAs research interests include eutrophication, hazardous substances, biodiversity, development and application of indicator-based assessment tools, and ecosystem-based management of coastal and marine waters (e.g. WFD, MSFD, HELCOM BSAP, etc.). JHA has been Project Manager of large national and international projects (e.g. M-FDC, BALANCE, EUTRO-PRO, HOLAS, MSFD-DIA, HARMONY, MONIS, ECOMAR, etc.). JHA has a passionate interest in synthesis research and is leader of the Aquatic Syntheis Research Centre (AquaSYNC). Former employments include: Danish Environmental Protection Agency, National Environmental Research Institute (NERI), DHI and Aarhus University – as well as an adjunct Professorship in Ecosystem-based Management of the Baltic Sea (2014-2018) at the Finnish Environment Institute (SYKE)
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cjmCiarán Murray, Research Scientist (PhD). Research interests include light in marine ecosystems, development of indicator-based assessment tools (e.g. HEAT, BEAT, CHASE, NEAT, MESH and WATERS) and status assessments in relation to eutrophication, biodiversity and “chemical status”. CM has participated in major international projects including HELCOM HOLAS, HARMONY, WATERS and DEVOTES. CM has previously held positions at Aarhus University and DHI.
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Emilie Kallenbach, Researcher (PhD) at NIVA Denmark. EK is educated as limnologist from University of Copenhagen, section of freshwater biology. Her master was about nature restoration and aquatic ecosystem metabolism. EK’s PhD focused on microplastics in freshwater invertebrates. EK is also a member of ICES’ Working Group on Marine Litter.

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Therese Harvey, Research Scientist (PhD). has more than 15 years experience in environmental monitoring, water resource management and mapping marine ecosystems. Her research interests include eutrophication, environmental monitoring and management in relation to human influences within the EU’s water and marine directives (WFD and MSFD). Therese has great experience in applying satellite data in environmental monitoring and development of optical water quality indicators. Therese has previously worked at the University of Stockholm, Sweden and at WaterInsight, Holland.
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Steen W. Knudsen, Post Doc (PhD), has a background in molecular biology, ichthyology, taxonomy, marine biology, population genetics, evolutionary relationship of fishes and environmental DNA (eDNA). Works with development of molecular diagnostic tools to identify presence of species in aquatic environments via non-invasive sampling techniques.

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JesJes Jessen Rasmussen Researcher Scientist (PhD). JR’s academic career integrates approximately ten years of research entirely dedicated to the field of stream ecology. During PhD and early postgraduate years his main scientific focus was quantifying contaminant effects on stream macrofauna and associated ecosystem processes and was based on mesocosm experiments and field surveys. During the past five years, he has increasingly broadened his scientific interests and competences towards other organism groups and human pressures relevant for stream management (e.g. hydromorphology and habitat quality). He has worked on multiple governmental advisory projects ranging from technical guidance documents to constructing new ecological indicators and producing various decision support systems addressing Water Framework Directive management needs. As such, all his research and governmental advisory projects are centered around applied aspects of freshwater ecology and ecotoxicology.

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Paula Ocampo, BSc, and vocational trainee from RUC, where she studies environmental biology. PO has worked with large datasets and the CHASE tool. PO is employed as research assistant in NIVA Denmark.

Simon Andresen Özkan, BSc in water, bioresources and environmental management from DTU, master student in Environmental technology at DTU. SÖ is employed as student assistant in NIVA Denmark.


1517577196696Jørgen Nørrevang Jensen, (PhD). JNJ has previously worked at the National Environmental Research Institute (NERI) and the International Council for the Exploration of the Seas (ICES). JNJ helps us in relation to various R&D projects and Integrated Assessments – mostly with a focus on fish and softbottom invertebrates.

1525088455840 (1)Kathrine Hammer, (PhD). KH is a freshwater biologist from University of Copenhagen and has previously worked as a research Assistant at NIVA Denmark. She now work for Gladsaxe Municipality’s Environmental Division and is also associated with NIVA Denmark on an ad hoc basis.