Publications

Here you will find publications from DTU Aqua:

Recent publications

2018
 

Making the otolith magnesium chemical calendar-clock tick: Plausible Mechanism and Empirical Evidence

Year: 2018

Making the otolith magnesium chemical calendar-clock tick: Plausible Mechanism and Empirical Evidence

Limburg, K. E., Wuenschel, M. J., Hüssy, K., Heimbrand, Y. & Samson, M. 2 Oct 2018 In : Reviews in Fisheries Science and Aquaculture. 26, 4, p. 479-493

Publication: Research - peer-reviewReview – Annual report year: 2018

The incorporation of a number of readily measured trace elements into otoliths is considered to be under some sort of physiological control, but rarely are explicit mechanisms proposed. Studies of the incorporation of the trace element magnesium reveal that in some taxa there exists strong seasonal patterning, taking on the characteristics of a “chemical calendar-clock.” However, Mg/Ca and the isotopic ratio 26/24Mg are less “clock-like” in taxa that are not as metabolically active. Herein, it is hypothesized that Mg uptake and incorporation are related to metabolic activity. Further, a two-step process of Mg incorporation is proposed: (1) limited entry into the otolith-bearing chamber through ion channels and (2) association with water-soluble proteins within the chamber. Supporting data from a range of taxa and life histories are provided; the authors’ aim is to stimulate discussion and encourage physiologists to test these and alternative mechanistic hypotheses.

Original languageEnglish
JournalReviews in Fisheries Science and Aquaculture
Volume26
Issue number4
Pages (from-to)479-493
ISSN2330-8249
DOIs
StatePublished - 2 Oct 2018

  PDF

Research for PECH Committee - Landing Obligation and Choke Species in Multispecies and Mixed Fisheries - the North sea

Year: 2018

Original languageEnglish
PublisherEuropean Parliament
Number of pages63
ISBN (print)978-92-846-2972-5
ISBN (electronic)978-92-846-2973-2
ApplicantEuropean Parliament's Committee on Fisheries (PECH)
StatePublished - 2018

  PDF

Definition af biogene rev: Miljøprojekt nr. 1992

Year: 2018

Definition af biogene rev: Miljøprojekt nr. 1992

Dahl, K. & Petersen, J. K. 2018 Miljøstyrelsen,. 26 p.

Publication: Research - peer-reviewReport – Annual report year: 2018

Original languageDanish
PublisherMiljøstyrelsen,
Number of pages26
ISBN (print)978-87-7175-612-8
StatePublished - 2018

Bibliographical note

Miljøstyrelsen offentliggør rapporter og indlæg vedrørende forsknings- og udviklingsprojekter indenfor miljøsektoren, som er finansieret af Miljøstyrelsen. Det skal bemærkes, at en sådan offentliggørelse ikke nødvendigvis betyder, at det pågældende indlæg giver udtryk for Miljøstyrelsens synspunkter. Offentliggørelsen betyder imidlertid, at indlægget udgør et væsentligt indlæg i debatten omkring den danske miljøpolitik. Må citeres med kildeangivelse.

 

Neglected viral diseases in freshwater fish farming

Year: 2018

Neglected viral diseases in freshwater fish farming

Haenen, O., Bigarré, L., Ito, T., Avarre, J-C. & Vendramin, N. 2018 In : Bulletin of The European Association of Fish Pathologists. 38, 3, p. 105-115

Publication: Research - peer-reviewConference article – Annual report year: 2018

Original languageEnglish
JournalBulletin of The European Association of Fish Pathologists
Volume38
Issue number3
Pages (from-to)105-115
ISSN0108-0288
StatePublished - 2018

  PDF

Same Risk Area: An area-based approach for the management of bio-invasion risks from ships' ballast water

Year: 2018

Same Risk Area: An area-based approach for the management of bio-invasion risks from ships' ballast water

Stuer-Lauridsen, F., Drillet, G., Hansen, F. T. & Saunders, J. 2018 In : Marine Policy.

Publication: Research - peer-reviewJournal article – Annual report year: 2018

Same Risk Area refers to an area-based approach for the risk assessment of aquatic invasive species that considers the extent of natural dispersal. It is a new addition to the Guidelines on Risk Assessment (G7) under the International Convention for the Control and Management of Ships' Ballast Water and Sediments. The method outlined here to define the extent of a Same Risk Area assesses the connectivity of species of concern within a wider area by combining information from simulated hydrodynamic data and agent-based modelling with the biological traits and habitat preferences of the selected target species
Original languageEnglish
JournalMarine Policy
ISSN0308-597X
DOIs
StateAccepted/In press - 2018

 

Udsigt til flere pighvar omkring Bornholm

Year: 2018

Udsigt til flere pighvar omkring Bornholm

Christoffersen, M. 2018 In : Danske Fritidsfiskere. Juni 2018, p. 20

Publication: CommunicationJournal article – Annual report year: 2018

Original languageDanish
JournalDanske Fritidsfiskere
Issue numberJuni 2018
Pages (from-to)20
ISSN1904-5387
StatePublished - 2018

 

Seasonality of Oithona similis and Calanus helgolandicus reproduction and abundance: contrasting responses to environmental variation at a shelf site

Year: 2018

Seasonality of Oithona similis and Calanus helgolandicus reproduction and abundance: contrasting responses to environmental variation at a shelf site

Cornwell, L. E., Findlay, H. S., Fileman, E. S., Smyth, T. J., Hirst, A. G., Bruun, J. T., McEvoy, A. J., Widdicombe, C. E., Castellani, C., Lewis, C. & Atkinson, A. 2018 In : Journal of Plankton Research. 40, 3, p. 295-310

Publication: Research - peer-reviewJournal article – Annual report year: 2018

The pelagic copepods Oithona similis and Calanus helgolandicus have overlapping geographic ranges, yet contrast in feeding mode, reproductive strategy and body size. We investigate how these contrasting traits influence the seasonality of copepod abundance and reproductive output under environmental variation, using time series data collected over 25 years at the Western Channel Observatory station, L4. The proportional change in egg production rate (EPR, eggs female−1 d−1) over the annual cycle was ~10-fold and similar for both species, although EPR of O. similis was only ~ 11% that of C. helgolandicus. The timing of EPR maxima for O. similis coincided with increased sea surface temperature (SST) in summer, likely due to a temperature-dependent brooding period. Conversely, EPR of broadcast spawning C. helgolandicus was more strongly related to net heat flux and diatom biomass, both parameters associated with the spring phytoplankton bloom. In both species, female body mass correlated negatively with SST, with a 7.5% reduction in body mass per °C in C. helgolandicus compared to just 2.3% in O. similis. Finally, seasonality of EPR and adult and copepodite abundance was strongly decoupled in both species, suggesting that optimum conditions for reproduction and abundance occurred at different times of the year.
Original languageEnglish
JournalJournal of Plankton Research
Volume40
Issue number3
Pages (from-to)295-310
ISSN0142-7873
DOIs
StatePublished - 2018

 

Change of foraging behavior of cormorants and the effect on river fish

Year: 2018

Change of foraging behavior of cormorants and the effect on river fish

Jepsen, N., Ravn, H. D. & Pedersen, S. 2018 In : Hydrobiologia.

Publication: Research - peer-reviewJournal article – Annual report year: 2018

Since the European population of great cormorants (Phalacrocorax carbo sinensis) rapidly increased 30 years ago, Denmark has been one of the
core breeding areas for this colonial water bird. Following a 10-year period with stable breeding numbers in Denmark, the population of great cormorants
decreased. At the same time, a combination of cold winters and low availability of coastal prey fish apparently triggered birds to seek new foraging areas.
Thus, cormorants began to appear in rivers and streams coinciding with an observed massive decline of fish, mainly brown trout (Salmo trutta) and grayling
(Thymallus thymallus). In this paper, we present the results from studies using radio-telemetry, PIT-tagging, and traditional fish surveys to estimate the
impact of predation in Danish lowland rivers. Recovery of PIT-tags revealed that an estimated 30% of wild trout and 72% of wild grayling tagged in a small river
were eaten by cormorants. In another medium-sized river, 79% of radio-tagged adult grayling were removed, presumably by cormorants during winter. Thus, predation from cormorants appears to be at a level that explains the observed collapse of grayling and brown trout populations in many Danish streams
Original languageEnglish
JournalHydrobiologia
ISSN0018-8158
DOIs
StateAccepted/In press - 2018

  PDF

The Baltic Sea as a time machine for the future coastal ocean

Year: 2018

The Baltic Sea as a time machine for the future coastal ocean

Reusch, T. B. H., Dierking, J., Andersson, H. C., Bonsdorff, E., Carstensen, J., Casini, M., Czajkowski, M., Hasler, B., Hinsby, K., Hyytiainen, K., Johannesson, K., Jomaa, S., Jormalainen, V., Kuosa, H., Kurland, S., Laikre, L., MacKenzie, B. R., Margonski, P., Melzner, F., Oesterwind, D., Ojaveer, H., Refsgaard, J. C., Sandstrom, A., Schwarz, G., Tonderski, K., Winder, M. & Zandersen, M. 2018 In : Science Advances. 4, 5, eaar8195

Publication: Research - peer-reviewJournal article – Annual report year: 2018

Coastal global oceans are expected to undergo drastic changes driven by climate change and increasing anthropogenic pressures in coming decades. Predicting specific future conditions and assessing the best management strategies to maintain ecosystem integrity and sustainable resource use are difficult, because of multiple interacting pressures, uncertain projections, and a lack of test cases for management. We argue that the Baltic Sea can serve as a time machine to study consequences and mitigation of future coastal perturbations, due to its unique combination of an early history of multistressor disturbance and ecosystem deterioration and early implementation of cross-border environmental management to address these problems. The Baltic Sea also stands out in providing a strong scientific foundation and accessibility to long-term data series that provide a unique opportunity to assess the efficacy of management actions to address the breakdown of ecosystem functions. Trend reversals such as the return of top predators, recovering fish stocks, and reduced input of nutrient and harmful substances could be achieved only by implementing an international, cooperative governance structure transcending its complex multistate policy setting, with integrated management of watershed and sea. The Baltic Sea also demonstrates how rapidly progressing global pressures, particularly warming of Baltic waters and the surrounding catchment area, can offset the efficacy of current management approaches. This situation calls for management that is (i) conservative to provide a buffer against regionally unmanageable global perturbations, (ii) adaptive to react to new management challenges, and, ultimately, (iii) multisectorial and integrative to address conflicts associated with economic trade-offs.
Original languageEnglish
Article numbereaar8195
JournalScience Advances
Volume4
Issue number5
ISSN2375-2548
DOIs
StatePublished - 2018


Show all
http://www.aqua.dtu.dk/english/about/publications?fr=1&mr=10&qt=RssQuery&rss=http%3A%2F%2Forbit.dtu.dk%2Fen%2Fpublications%2Fsearch.rss%3FpublicationYearsFrom%3D%26publicationstatus%3D%26advanced%3Dtrue%26publicationYearsTo%3D%26type%3D%26uri%3D%26submissionYearsTo%3D%26institution%3Dall%26search%3D%26organisationName%3DNational%2520Institute%2520of%2520Aquatic%2520Resources%26submissionYearsFrom%3D%26organisations%3D4223%26publicationcategory%3D%26peerreview%3D
20 JUNE 2018