Pernille Nielsen
Technical University of Denmark
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Marine Pollution Bulletin | 2014
Jens Kjerulf Petersen; Berit Hasler; Karen Timmermann; Pernille Nielsen; Ditte Bruunshøj Tørring; Martin M. Larsen; Marianne Holmer
Long-line mussel farming has been proposed as a mitigation tool for removal of excess nutrients in eutrophic coastal waters. A full-scale mussel farm optimized for cost efficient nutrient removal was established in the eutrophic Skive Fjord, Denmark where biological and economic parameters related to nutrient removal was monitored throughout a full production cycle (1 yr). The results showed that it was possible to obtain a high area specific biomass of 60 t WW ha(-1) eqvivalent to a nitrogen and phosphorus removal of 0.6-0.9 and 0.03-0.04 t ha(-1)yr, respectively. The analysis of the costs related to establishment, maintenance and harvest revealed that mussel production optimized for mitigation can be carried out at a lower cost compared to mussel production for (human) consumption. The costs for nutrient removal was 14.8 € kg(-1)N making mitigation mussel production a cost-efficient measure compared to the most expensive land-based measures.
Aquaculture International | 2016
Jens Kjerulf Petersen; Camille Saurel; Pernille Nielsen; Karen Timmermann
Effects of excess loading of nutrients to the marine environment can be mitigated by mussel cultures, basically through nutrient removal from the marine environment when shellfish are harvested. Shellfish farming also provide other goods and services to the marine environment primarily through the impact on water transparency caused by shellfish filtration. There is an increasing awareness of the mitigation potential in mussel culture in relation to eutrophication, but so far practical examples of culture on full scale devoted to mitigation are few. Further, impact of mussel farming on nutrient cycling, e.g. in the sediments below the culture units, has raised concerns. In this review, we clarify concepts in relation to nutrient mitigation and discuss goods and services delivered by mussel mitigation cultures and their impact on an ecosystem scale based primarily on results from studies in heavily eutrofied estuaries. A multi-criteria approach for site selection is presented based on experiences from Danish waters, and economic aspects of mitigation cultures are analysed in relation to use of the produced mitigation mussels. Future perspectives for extractive cultures are discussed in relation to source of excess nutrients.
Aquaculture Environment Interactions | 2016
Pernille Nielsen; Peter J. Cranford; Marie Maar; Jens Kjerulf Petersen
Archive | 2017
Pernille Nielsen; Paula Canal-Vergés; Jens Kjerulf Petersen
Kaskelot | 2017
Jens Kjerulf Petersen; Henrik Glenner; Pernille Nielsen; Jørgen Lützen
European Aquaculture Society Meeting 2017 | 2017
Daniel Taylor; Camille Saurel; Pernille Nielsen; Jens Kjerulf Petersen
Archive | 2016
Pernille Nielsen; Paula Canal-Vergés; Kerstin Geitner; Jens Kjerulf Petersen
Aquaculture Europe | 2016
Camille Saurel; Lars Kyed Andersen; Pascal David Alain Barreau; Helge Boesen; Mathilde Errard; Pernille Nielsen; Jens Kjerulf Petersen
Archive | 2015
Pernille Nielsen; Carsten Fomsgaard Nielsen; Kerstin Geitner; Jens Kjerulf Petersen
Archive | 2015
Pernille Nielsen; Paula Canal-Vergés; Carsten Fomsgaard Nielsen; Kerstin Geitner; Jens Kjerulf Petersen