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Climate impacts on feeding and condition of capelin Mallotus villosus in the Barents Sea: evidence and mechanisms from a 30 year data set

Published on Aug 12, 2010in Aquatic Biology1.30
· DOI :10.3354/ab00265
Emma L. Orlova4
Estimated H-index: 4
,
Galina B. Rudneva4
Estimated H-index: 4
+ 3 AuthorsAlexandr S. Yurko1
Estimated H-index: 1
Cite
Abstract
Capelin Mallotus villosus is one of the most abundant fish species in the Barents Sea and is a critical link between zooplankton and commercial species such as Atlantic cod. Climatic condi- tions influence the population structure, feeding, and biological condition of capelin by affecting their distribution and that of their zooplankton prey. We sampled more than 1500 stomachs of capelin from 1978, 2002, 2003, 2006, and 2007 spanning years with cold, moderate, and warm climatic conditions, and examined the distribution of their major prey items: euphausiids and Calanus copepods. Capelin distribution is broader during warmer years, especially in the north and northeast. Copepods and euphausiids dominated the diets of capelin, but hyperiid amphipods and chaetognaths were also important. Diet and stomach fullness showed significant geographic variability within the Barents Sea, and varied among years depending on whether the climatic conditions were warmer or colder than the long-term average. Abundance of inter- and intraspecific competitors appears to affect diet, feeding intensity, and fat content. Fat content is an important indicator of capelin reproductive po- tential and their food value for predators, and was highest in northeastern regions and strongly influenced by capelin diet. Analyses of these 5 years of data plus 10 more years from previously pub- lished studies indicate the importance of climate drivers for determining fat content. Mechanisms are complex, however, and many factors directly and indirectly influence condition of this critical species in the Barents Sea ecosystem.
  • References (31)
  • Citations (29)
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References31
Newest
Published on Apr 29, 2014in Nammco Scientific Publications
Lars P. Folkow26
Estimated H-index: 26
(University of Tromsø),
Tore Haug32
Estimated H-index: 32
+ 1 AuthorsErling S. Nordøy18
Estimated H-index: 18
(University of Tromsø)
Data on energy requirements, diet composition, and stock size were combined to estimate the consumption of various prey species by minke whales ( Balaenoptera acutorostrata ) in Northeast Atlantic waters. In the period 1992-1995, the stock of 85,000 minke whales appeared to have consumed more than 1.8 million tonnes of prey per year in coastal waters off northern Norway, in the Barents Sea and around Spitsbergen during an assumed 6 month stay between mid-April and mid-October. Uncertainties in s...
Published on Apr 25, 2014in Nammco Scientific Publications
Kjell Tormod Nilssen19
Estimated H-index: 19
,
Ole-Petter Pedersen1
Estimated H-index: 1
(College of Fisheries)
+ 1 AuthorsTore Haug32
Estimated H-index: 32
The consumption of various prey species, required by the Barents Sea harp seal ( Phoca groenlandica ) stock in order to cover their energy demands, has been estimated by combining data on the energy density of prey species and on seasonal variations in the energy expenditure and body condition of the seals. Data on diet composition and body condition were collected in the period 1990-1996 by sampling harp seals during different seasons, in various areas of the Barents Sea. All diet composition d...
Published on Nov 1, 2009in Polar Biology2.00
Padmini Dalpadado21
Estimated H-index: 21
,
Bjarte Bogstad22
Estimated H-index: 22
+ 1 AuthorsLaura Rey1
Estimated H-index: 1
Distribution of 0-group cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) in August–September 2005 and 2006 was mainly restricted to the Atlantic waters of the western and central areas of the Barents Sea. The main distribution of 0-group fish overlapped largely with areas of high biomass (>7 gm−2 dry weight) of zooplankton. The copepod Calanus finmarchicus and krill Thysanoessa inermis, which are dominant zooplankton species in both Atlantic and boreal waters of the Barents Sea, were th...
Emma L. Orlova4
Estimated H-index: 4
,
Andrey V. Dolgov13
Estimated H-index: 13
+ 2 AuthorsLudmila L. Konstantinova1
Estimated H-index: 1
Abstract The purpose of the study is to assess the role of trophic relations of the dominant pelagic fishes capelin and polar cod in the Barents Sea with regard to distribution and accessibility as prey for the Atlantic cod in warm years (2004–2005). Unlike in the previous period, during these warm years a dramatic increase of the polar cod population resulted in a northwards expansion of the feeding grounds where overlapping of polar cod and capelin concentrations was observed. This caused an i...
Published on Jul 1, 2009in Limnology and Oceanography4.33
Leif Chr. Stige7
Estimated H-index: 7
(University of Oslo),
Dmitry Lajus13
Estimated H-index: 13
(SPbU: Saint Petersburg State University)
+ 4 AuthorsNils Chr. Stenseth82
Estimated H-index: 82
(University of Oslo)
We analyze interannual variation in zooplankton biomass in the southwestern Barents Sea in spring (May) and summer (June–July) 1959–1993. Using a threshold modeling approach, we quantify spatial, climatic, and acrossseason autoregressive effects under contrasting regimes of low and high densities of planktivorous fish (capelin and herring). Main findings: (1) zooplankton biomass is mainly influenced by capelin feeding, first in the offshore parts of the western Barents Sea in spring and subseque...
Published on Jan 1, 2009in Marine Biology Research1.29
Stig Falk-Petersen49
Estimated H-index: 49
(Norwegian College of Fishery Science),
Patrick Mayzaud26
Estimated H-index: 26
(CNRS: Centre national de la recherche scientifique)
+ 1 AuthorsJohn R. Sargent72
Estimated H-index: 72
(University of Stirling)
Abstract The three Arctic Calanus species, C. finmarchicus (Gunnerus, 1765), C. glacialis (Jaschov, 1955), and C. hyperboreus, are the most important herbivores in Arctic seas in terms of species biomass. They play a key role in the lipid-based energy flux in the Arctic, converting low-energy carbohydrates and proteins in ice algae and phytoplankton into high-energy wax esters. In this paper we review the over-wintering strategy, seasonal migration, stage development, life span, feeding strategy...
Published on Jan 1, 2009in Marine Biology Research1.29
Harald Gjøsæter25
Estimated H-index: 25
,
Bjarte Bogstad22
Estimated H-index: 22
,
Sigurd Tjelmeland8
Estimated H-index: 8
Abstract The Barents Sea capelin stock underwent drastic changes in stock size during the last three decades. Three stock collapses occurred in 1985–1989, 1993–1997, and 2003–2006. The collapses had effects both downwards and upwards in the food web. The release in predation pressure from the capelin stock led to increased amounts of zooplankton during the collapse periods. When capelin biomass was drastically reduced, its predators were affected in various ways. Cod experienced increased cannib...
Published on Mar 1, 2008in Climatic Change4.17
Ingrid H. Ellingsen16
Estimated H-index: 16
(SINTEF),
Padmini Dalpadado21
Estimated H-index: 21
+ 1 AuthorsHarald Loeng25
Estimated H-index: 25
The Barents Sea is a high latitude ecosystem and is an important nursery and feeding area for commercial fish stocks such as cod, capelin and herring. There is a large inter-annual variability both in physical and biological conditions in the Barents Sea. Understanding and predicting changes in the system requires insight into the coupled nature of the physical and biological interactions. A coupled physical and biological ocean model is used to study the impact of postulated future atmospheric ...
Published on Mar 1, 2008in Climatic Change4.17
Geir Huse27
Estimated H-index: 27
,
Ingrid H. Ellingsen16
Estimated H-index: 16
(SINTEF)
The capelin is a small pelagic fish that performs long distance migrations. It is a key species in the Barents Sea ecosystem and its distribution is highly climate dependent. Here we use an individual based model to investigate consequences of global warming on capelin distribution and population dynamics. The model relies on input on physics and plankton from a biophysical ocean model, and the entire life cycle of capelin including spawning of eggs, larval drift and adult movement is simulated....
Published on Aug 7, 2007in Journal of Plankton Research2.21
Malin Daase18
Estimated H-index: 18
(UNIS: University Centre in Svalbard),
Jon Olav Vik18
Estimated H-index: 18
(University of Oslo)
+ 2 AuthorsKetil Eiane20
Estimated H-index: 20
(UNIS: University Centre in Svalbard)
We quantify statistical relationships between hydrography and abundance of Calanus spp. in the Arctic-Atlantic transition zone around Svalbard (78-82°N) during early autumn. The Atlantic species C. finmarchicus was more abundant in warmer and more saline waters, as expected from its distributional core area. Conversely, the Arctic species C. hyperboreus was more abundant in colder and fresher waters. However, the Arctic species C. glacialis showed opposing relationships with hydrography in shall...
Cited By29
Newest
Published on Jan 1, 2019in Polar Biology2.00
Peter Grønkjær21
Estimated H-index: 21
(AU: Aarhus University),
Kasper Vibsig Nielsen (AU: Aarhus University)+ 3 AuthorsRasmus Berg Hedeholm11
Estimated H-index: 11
Capelin (Mallotus villosus) is an important trophic node in many Arctic and sub-Arctic ecosystems. In Godthabsfjord, West Greenland, the zooplankton community has been shown to change significantly from the inner part of the fjord, which is impacted by several glaciers to the shelf outside the fjord. To what extent this gradient in zooplankton composition influences capelin diet during their summer feeding in the fjord is yet unknown. To investigate this, we analysed stomach content of capelin (...
Published on Mar 1, 2018in Ecology4.29
Leif Christian Stige19
Estimated H-index: 19
(University of Oslo),
Kristina Øie Kvile6
Estimated H-index: 6
(University of Oslo)
+ 1 AuthorsØystein Langangen12
Estimated H-index: 12
(University of Oslo)
Published on Dec 1, 2017in Polar Biology2.00
Marina Espinasse1
Estimated H-index: 1
(Nord University),
Claudia Halsband13
Estimated H-index: 13
+ 4 AuthorsKetil Eiane20
Estimated H-index: 20
(Nord University)
In the advective realm of the seas, it is challenging to disentangle the role of regional and local processes on zooplankton populations. However, comparative studies of spatially separated zooplankton populations can provide valuable insights into this issue. We studied interannual abundance variation of the key zooplankton species Calanus finmarchicus and C. hyperboreus in three near-shore locations of the Nordic Seas: off northern Norway, Svalbard, and northern Iceland. Average abundances of ...
Published on Dec 1, 2017in AMBIO: A Journal of the Human Environment4.10
Max Troell38
Estimated H-index: 38
(Stockholm University),
Arne Eide11
Estimated H-index: 11
+ 2 AuthorsAnne-Sophie Crépin17
Estimated H-index: 17
(Stockholm University)
We review current knowledge about climate change impacts on Arctic seafood production. Large-scale changes in the Arctic marine food web can be expected for the next 40–100 years. Possible future trajectories under climate change for Arctic capture fisheries anticipate the movement of aquatic species into new waters and changed the dynamics of existing species. Negative consequences are expected for some fish stocks but others like the Barents Sea cod (Gadus morhua) may instead increase. Arctic ...
Published on Dec 1, 2017in AMBIO: A Journal of the Human Environment4.10
Anne-Sophie Crépin17
Estimated H-index: 17
(Royal Swedish Academy of Sciences),
Åsa Gren5
Estimated H-index: 5
(Royal Swedish Academy of Sciences)
+ 1 AuthorsDaniel Ospina1
Estimated H-index: 1
(Royal Swedish Academy of Sciences)
We propose a framework to support management that builds on a social–ecological system perspective on the Arctic Ocean. We illustrate the framework’s application for two policy-relevant scenarios of climate-driven change, picturing a shift in zooplankton composition and alternatively a crab invasion. We analyse archetypical system dynamics between the socio-economic, the natural, and the governance systems in these scenarios. Our holistic approach can help managers identify looming problems aris...
Published on Jan 1, 2017in Global Change Biology8.88
Øystein Langangen12
Estimated H-index: 12
(University of Oslo),
Jan Ohlberger16
Estimated H-index: 16
(University of Oslo)
+ 4 AuthorsDag Ø. Hjermann22
Estimated H-index: 22
(University of Oslo)
Mass mortality events caused by pulse anthropogenic or environmental perturbations (e.g., extreme weather, toxic spills or epizootics) severely reduce the abundance of a population in a short time. The frequency and impact of these events are likely to increase across the globe. Studies on how such events may affect ecological communities of interacting species are scarce. By combining a multispecies Gompertz model with a Bayesian state-space framework, we quantify community-level effects of a m...
Josep Lloret22
Estimated H-index: 22
(University of Girona),
Hans-Joachim Rätz8
Estimated H-index: 8
+ 1 AuthorsMontserrat Demestre23
Estimated H-index: 23
(CSIC: Spanish National Research Council)
Published on Oct 1, 2015in Ecosphere2.75
Lucía Rueda4
Estimated H-index: 4
,
Enric Massutí33
Estimated H-index: 33
+ 1 AuthorsManuel Hidalgo76
Estimated H-index: 76
Fish condition indices can be used as biological indicators of the health of individuals and are influenced by numerous external and internal drivers. Like most essential biological traits, they are very sensitive to the spatial heterogeneity occurring in marine ecosystems, which appears at many observational scales. This brings out different ecological processes that can only be revealed either regionally or locally. The scale-dependent spatial variability concerns not only environmental factor...
Published on Jun 8, 2015in Marine Ecology Progress Series2.36
Pablo Brosset6
Estimated H-index: 6
,
Frédéric Ménard17
Estimated H-index: 17
+ 7 AuthorsClaire Saraux14
Estimated H-index: 14
Endogenous and environmental variables are fundamental in explaining variations in fish condition. Based on more than 20 yr of fish weight and length data, relative condition indices were computed for anchovy and sardine caught in the Gulf of Lions. Classification and regression trees (CART) were used to identify endogenous factors affecting fish condition, and to group years of similar condition. Both species showed a similar annual cycle with condition being minimal in February and maximal in ...