TITLE

Spatio-Temporal Variability of the North Sea Cod Recruitment in Relation to Temperature and Zooplankton

AUTHOR(S)
Nicolas, Delphine; Rochette, Sébastien; Llope, Marcos; Licandro, Priscilla
PUB. DATE
February 2014
SOURCE
PLoS ONE;Feb2014, Vol. 9 Issue 2, p1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The North Sea cod (Gadus morhua, L.) stock has continuously declined over the past four decades linked with overfishing and climate change. Changes in stock structure due to overfishing have made the stock largely dependent on its recruitment success, which greatly relies on environmental conditions. Here we focus on the spatio-temporal variability of cod recruitment in an effort to detect changes during the critical early life stages. Using International Bottom Trawl Survey (IBTS) data from 1974 to 2011, a major spatio-temporal change in the distribution of cod recruits was identified in the late 1990s, characterized by a pronounced decrease in the central and southeastern North Sea stock. Other minor spatial changes were also recorded in the mid-1980s and early 1990s. We tested whether the observed changes in recruits distribution could be related with direct (i.e. temperature) and/or indirect (i.e. changes in the quantity and quality of zooplankton prey) effects of climate variability. The analyses were based on spatially-resolved time series, i.e. sea surface temperature (SST) from the Hadley Center and zooplankton records from the Continuous Plankton Recorder Survey. We showed that spring SST increase was the main driver for the most recent decrease in cod recruitment. The late 1990s were also characterized by relatively low total zooplankton biomass, particularly of energy-rich zooplankton such as the copepod Calanus finmarchicus, which have further contributed to the decline of North Sea cod recruitment. Long-term spatially-resolved observations were used to produce regional distribution models that could further be used to predict the abundance of North Sea cod recruits based on temperature and zooplankton food availability.
ACCESSION #
94730166

 

Related Articles

  • On the spatio-temporal analysis of hydrological droughts from global hydrological models. Perez, G. A. Corzo; van Huijgevoort, M. H. J.; Voß, F.; van Lanen, H. A. J. // Hydrology & Earth System Sciences Discussions;2011, Vol. 8 Issue 1, p619 

    The recent concerns for world-wide extreme events related to climate change phenomena have motivated the development of large scale models that simulate the global water cycle. In this context, analyses of extremes is an important topic that requires the adaptation of methods used for river...

  • Vegetation Dynamics and Associated Driving Forces in Eastern China during 1999-2008. Jian Peng; You Li; Lu Tian; Yanxu Liu; Yanglin Wang // Remote Sensing;2015, Vol. 7 Issue 10, p13641 

    Vegetation is one of the most important components of the terrestrial ecosystem and, thus, monitoring the spatial and temporal dynamics of vegetation has become the key to exploring the basic process of the terrestrial ecosystem. Vegetation change studies have focused on the relationship between...

  • Spatial and temporal study of precipitation characteristics over Greece. Livada, I.; Charalambous, G.; Assimakopoulos, M. N. // Theoretical & Applied Climatology;2008, Vol. 93 Issue 1/2, p45 

    (1) The main objectives of this study are the spatial and temporal analysis of annual 24-hour extreme precipitation amounts for different return periods, and (2) the interannual variability of the frequency of month-to-month maximum rainfall using harmonic analysis. Long time series data from...

  • Mediterranean marine copepods: basin-scale trends of the calanoid Centropages typicus. Molinero, J.; Vukanič, V.; Lučić, D.; Ibanez, F.; Nival, P.; Licandro, P.; Calbet, A.; Christou, E.; Daly-Yahia, N.; Fernandez de Puelles, M.; Mazzocchi, M.; Siokou-Frangou, I. // Hydrobiologia;Dec2008, Vol. 617 Issue 1, p41 

    The Mediterranean Sea is located in a crossroad of mid-latitude and subtropical climatic modes that enhance contrasting environmental conditions over both latitudinal and longitudinal ranges. Here, we show that the large-scale environmental forcing is reflected in the basin scale trends of the...

  • Spatio-Temporal Variability of Copepod Abundance along the 20°S Monitoring Transect in the Northern Benguela Upwelling System from 2005 to 2011. Bode, Maya; Kreiner, Anja; van der Plas, Anja K.; Louw, Deon C.; Horaeb, Richard; Auel, Holger; Hagen, Wilhelm // PLoS ONE;May2014, Vol. 9 Issue 5, p1 

    Long-term data sets are essential to understand climate-induced variability in marine ecosystems. This study provides the first comprehensive analysis of longer-term temporal and spatial variations in zooplankton abundance and copepod community structure in the northern Benguela upwelling system...

  • First Autonomous Bio-Optical Profiling Float in the Gulf of Mexico Reveals Dynamic Biogeochemistry in Deep Waters. Green, Rebecca E.; Bower, Amy S.; Lugo-Fernández, Alexis // PLoS ONE;Jul2014, Vol. 9 Issue 7, p1 

    Profiling floats equipped with bio-optical sensors well complement ship-based and satellite ocean color measurements by providing highly-resolved time-series data on the vertical structure of biogeochemical processes in oceanic waters. This is the first study to employ an autonomous profiling...

  • IN THE CORRIDORS.  // Earth Negotiations Bulletin;6/7/2013, Vol. 12 Issue 573, p3 

    Information about the informal consultations by Copenhagen and the expectations on the effect of mitigation of climatic changes in the world is presented including the proposal of Poland to mitigate climate changes is presented.

  • Accelerated Warming and Emergent Trends in Fisheries Biomass Yields of the World's Large Marine Ecosystems. Sherman, Kenneth; Belkin, Igor M.; Friedland, Kevin D.; O'Reilly, John; Hyde, Kimberly // AMBIO - A Journal of the Human Environment;Jun2009, Vol. 38 Issue 4, p215 

    Information on the effects of global climate change on trends in global fisheries biomass yields has been limited in spatial and temporal scale. Results are presented of a global study of the impact of sea surface temperature (SST) changes over the last 25 years on the fisheries yields of 63...

  • Asian Tapestry of Grassroots Situation, Calls and Demands.  // Contours;Jun2009, Vol. 19 Issue 2, p21 

    The article offers information on the series of events including the regional assembly of people who are mostly affected by the serious impacts of climate change, which will take place at the United Nations Conference Center (UNCC) in Bangkok, Thailand on September 28, 2009 and October 9, 2009.

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics