16 Works

The effect of temperature on appetite in fish

Fredrik Jutfelt, Tommy Norin, Eirik Åsheim, Lauren Rowsey, Anna Andreassen, Rachael Morgan, Timothy Clark & Ben Speers-Roesch
Temperature has a dramatic effect on the physiology of ectothermic animals, impacting most of their biology. When temperatures increase above optimal for an animal, their growth gradually decreases. The main mechanism behind this growth rate reduction is unknown. Here, we suggest the ‘aerobic scope protection’ hypothesis as a mechanistic explanation for the reduction in growth. After a meal, metabolic rate, and hence oxygen consumption rate, transiently increases in a process called specific dynamic action (SDA)....

The biomolecular characterisation of a finger ring contextually dated to the emergence of the Early Neolithic from Syltholm, Denmark

Theis Jensen, Meaghan Mackie, Alberto Taurozzi, Liam Lannigan, Carsten Gundelach, Jesper Olsen, Søren Sørensen, Matthew Collins, Mikkel Sørensen & Hannes Schroeder
We present the analysis of an osseous finger ring from a predominantly early Neolithic context in Denmark. To characterise the artefact and identify the raw material used for its manufacture, we performed micro-computed tomography (Micro CT) scanning, zooarchaeology by mass spectrometry (ZooMS) peptide mass fingerprinting, as well as protein sequencing by liquid chromatography tandem mass spectrometry (LC-MS/MS). We conclude that the ring was made from long bone or antler due to the presence of osteons...

Processed airborne radio-echo sounding data from the POLARGAP survey covering the South Pole, and Foundation and Recovery Glaciers, East Antarctica (2015/2016)

Fausto Ferraccioli, Rene Forsberg, Kenichi Matsuoka, Arne Olesen, Tom Jordan, Hugh Corr, Carl Robinson & Jack Kohler
During the austral summer of 2015/16, a major international collaboration funded by the European Space Agency (ESA) and with in-kind contribution from the British Antarctic Survey, the Technical University of Denmark (DTU), the Norwegian Polar Institute (NPI) and the US National Science Foundation (NSF), acquired ~38,000 line km of aerogeophysical data. The primary objective of the POLARGAP campaign was to carry out an airborne gravity survey covering the southern polar gap of the ESA gravity...

Indoor temperature - office work performance database

Jose Ali Porras-Salazar, Stefano Schiavon, Pawel Wargocki, Toby Cheung & Kwok Wai Tham
The objective of developing this database was to summarise all relevant published studies that have linked the thermal environment to office work performance within the most representative temperature range for office buildings (20 °C to 30 °C). We conducted a comprehensive literature review and collected the relevant published data into our database. A variety of combinations of keywords including temperature, thermal sensation, work, cognitive, and task performance, and office and commercial buildings, were used. In...

The battle between harvest and natural selection creates small and shy fish

Christopher Monk, Dorte Bekkevold, Thomas Klefoth, Thilo Pagel, Miquel Palmer & Robert Arlinghaus
Harvest of fish and wildlife, both commercial and recreational, is a selective force that can induce evolutionary changes to life-history and behaviour. Natural selective forces may create countering selection pressures. Assessing natural fitness represents a considerable challenge in broadcast spawners. Thus, our understanding of the relative strength of natural and fisheries selection is slim. In the field, we compared the strength and shape of harvest selection to natural selection on body size over four years...

Processed bed elevation picks from the POLARGAP radar survey across the Pensacola-Pole Basin (2015/2016)

Hugh Corr, Fausto Ferraccioli, Rene Forsberg, Tom Jordan, Jack Kohler, Kenichi Matsuoka, Arne Olesen & Carl Robinson
This dataset contains bed and surface elevation picks derived from airborne radar collected during the POLARGAP 2015/16 project funded by the European Space Agency (ESA) and with in-kind contribution from the British Antarctic Survey, the Technical University of Denmark (DTU), the Norwegian Polar Institute (NPI) and the US National Science Foundation (NSF). This collaborative project collected ~38,000 line-km of new aerogeophysical data using the 150MHz PASIN radar echo sounding system (Corr et al., 2007) deployed...

Fish resist temptation from junk food: State-dependent diet choice in reproductive Atlantic cod (Gadus morhua) facing seasonal fluxes of lipid-rich prey

Mikael Van Deurs, Anders Persson & Christian Jorgensen
In ecological sciences, animal diets are often simplified to “resources” or “caloric quantities”. However, in the present study, we investigated the optimal foraging strategy of Atlantic cod (Gadus morhua) when both macro- and micro-nutritional requirements are accounted for. Proteins cannot be synthesized from fatty acids, so the proteins for gonad development must come from other dietary sources. In addition, micronutrients are required in smaller quantities. For example, for cod, arachidonic acid (ARA) acts as a...

Selective effects of small barriers on river-resident fish

Peter Jones, Toby Champneys, Jessica Vevers, Luca Börger, Jon Svendsen, Sofia Consuegra, Joshua Jones & Carlos Garcia De Leaniz
1. Habitat fragmentation is a principal threat to biodiversity and artificial river barriers are a leading cause of the global decline in freshwater biota. Whilst the impact of barriers on diadromous fish is well established, impacts on river-resident fish communities remain unclear, especially for low-head barriers. 2. We examined the movement of five contrasting freshwater fish (topmouth gudgeon, European minnow, stone loach, bullhead, and brown trout) in an experimental cascade mesocosm with seven pools separated...

Processed airborne radio-echo sounding data from the ICEGRAV survey covering the Recovery Catchment and interior Dronning Maud Land, East Antarctica (2012/2013)

Fausto Ferraccioli, Hugh Corr, Tom Jordan, Rene Forsberg, Kenichi Matsuoka, Anja Diez, Arne Olesen, Maria Ghidella, Andres Zakrajsek, Carl Robinson & Owen King
During the austral summer of 2012/13 a major international collaboration between Danish, US, UK, Norwegian and Argentinian scientists collected ~29,000 line km (equivalent to 464,317 km2) of aerogeophysical data over 132 hours of flight time and covering the previously poorly surveyed Recovery Glacier and Recovery Subglacial Lakes, as well as the area of Coats Land inboard from Halley VI using airborne survey systems mounted in Twin Otter aircraft. Our aircraft was equipped with dual-frequency carrier-phase...

Ancestral sperm ecotypes reveal multiple invasions of a non-native fish in northern Europe

Leon Green, Apostolos Apostolou, Ellika Faust, Kajsa Palmqvist, Jane W. Behrens, Jonathan N. Havenhand, Erica H. Leder & Charlotta Kvarnemo
For externally fertilising organisms in the aquatic environment, the abiotic fertilisation medium can be a strong selecting force. Among bony fishes, sperm are adapted to function in a narrow salinity range. A notable exception is the family Gobiidae, where several species reproduce across a wide salinity range. The family also contains several wide-spread invasive species. To better understand how these fishes tolerate such varying conditions, we measured sperm performance in relation to salinity from a...

Disparate movement behaviour and feeding ecology in sympatric ecotypes of Atlantic cod

Martin Lykke Kristensen
Co-existence of ecotypes, genetically divergent population units, is a widespread phenomenon, potentially affecting ecosystem functioning and local food web stability. In coastal Skagerrak, Atlantic cod (Gadus morhua) occur as two such co-existing ecotypes. We applied a combination of acoustic telemetry, genotyping and stable isotope analysis to 72 individuals to investigate movement ecology and food niche of putative local “Fjord” and putative oceanic “North Sea” ecotypes – thus named based on previous molecular studies. Genotyping and...

Data from: Restoring marine ecosystems: spatial reef configuration triggers taxon-specific responses among early colonizers

Tim J. G. Wilms, Pauli H. Norðfoss, Henrik Baktoft, Josianne G. Støttrup, Bo M. Kruse & Jon C. Svendsen
1. The longstanding debate in conservation biology on the importance of single large or several small (SLOSS) habitats for preserving biodiversity remains highly relevant, given the ongoing degradation and loss of natural habitats worldwide. Restoration efforts are often constrained by limited resources, and insights from SLOSS studies therefore have important implications if restoration efforts can be optimized by manipulating the spatial configuration of restored habitats. Yet, the relevance of SLOSS for habitat restoration remains largely...

Data from: Sperm performance limits the reproduction of an invasive fish in novel salinities

Leon Green, Jan Niemax, Jens-Peter Herrmann, Axel Temming, Jane W. Behrens, Jonathan N. Havenhand, Erica Leder & Charlotta Kvarnemo
Aim: The few fish species able to reproduce across wide osmotic ranges either plastically acclimate sperm performance to, or are locally adapted to, different salinities. The invasive round goby (Neogobius melanostomus) is spreading in Eurasia and the Americas, into both fresh and brackish water. We aim to understand if reproduction in different salinities is affected an ability to acclimate. Location: Brackish and freshwater systems of northern Europe and the Baltic Sea. Methods: We cross-exposed round...

GNSS uplift time series and ice surface elevation changes

Shfaqat Abbas Khan & Karina Hansen
We use Global Navigation Satellite System (GNSS) stations attached to bedrock to measure elastic displacements of the solid Earth caused by dynamic thinning near the glacier terminus. When we compare our results with discharge, we find a time lag between glacier speedup/slowdown and onset of dynamic thinning/thickening. Our results show that dynamic thinning/thickening on Jakobshavn Isbræ occurs 0.87 ± 0.07 years before speedup/slowdown. This implies that using GNSS time series we are able to predict...

Genetic response to human‐induced habitat changes in the marine environment: A century of evolution of European sprat in Landvikvannet, Norway

María Quintela, Cecilie Kvamme, Dorte Bekkevold, Richard D. M. Nash, Eeva Jansson, Geir Dahle, Kevin A. Glover, Àlex Richter‐Boix, Florian Berg & François Besnier
Habitat changes represent one of the five most pervasive threats to biodiversity. However, anthropogenic activities also have the capacity to create novel niche spaces to which species respond differently. In 1880, one such habitat alterations occurred in Landvikvannet, a freshwater lake on the Norwegian coast of Skagerrak, which became brackish after being artificially connected to the sea. This lake is now home to the European sprat, a pelagic marine fish that managed to develop a...

Data from: Drivers of neutral and adaptive differentiation in pike (Esox lucius) populations from contrasting environments

Johanna Sunde, Yeşerin Yıldırım, Petter Tibblin, Dorte Bekkevold, Christian Skov, Oscar Nordahl, Per Larsson & Anders Forsman
Understanding how eco-evolutionary processes and environmental factors drive population differentiation and adaptation are key challenges in evolutionary biology of relevance for biodiversity protection. Differentiation requires at least partial reproductive separation, which may result from different modes of isolation such as geographic isolation (allopatry) or isolation by distance (IBD), resistance (IBR), and environment (IBE). Despite that multiple modes might jointly influence differentiation, studies that compare the relative contributions are scarce. Using RADseq, we analyse neutral and...

Registration Year

  • 2021
    16

Resource Types

  • Dataset
    16

Affiliations

  • Technical University of Denmark
    16
  • British Antarctic Survey
    3
  • Norwegian Polar Institute
    3
  • University of Gothenburg
    2
  • Deutsches Museum
    1
  • Universität Hamburg
    1
  • Linnaeus University
    1
  • Lund University
    1
  • Aarhus University
    1
  • University of California, Berkeley
    1