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Report of the Joint CIESM/ICES Workshop on Mnemiopsis Science (JWMS) (contribution of Lies Vansteenbrugge). / ICES.

ICES CM 2014/SSGHIE:14. 2014.

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ICES 2014, Report of the Joint CIESM/ICES Workshop on Mnemiopsis Science (JWMS) (contribution of Lies Vansteenbrugge). in ICES CM 2014/SSGHIE:14. ICES Annual Science Conference, La Coruna, Spanje, 15/09/14.

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@inbook{6dfcec9d31024f78a6ab7f05a824b5ee,
title = "Report of the Joint CIESM/ICES Workshop on Mnemiopsis Science (JWMS) (contribution of Lies Vansteenbrugge)",
abstract = "The ICES/CIESM Joint Workshop on Mnemiopsis Science (JWMS) chaired by Sophie Pitois (UK) and Tamara Shiganova (Russia), met in A Coru{\~n}a, Spain from 18 to 20 September 2014. Scientists affiliated with the International Council for the Exploration of the Sea (ICES) and the Mediterranean Science Commission (CIESM) participated in the Joint Workshop to discuss the latest advances regarding the biogeography, ecology, impact and economic aspects of the invasive ctenophore Mnemiopsis leidyi and its Beroe predators (both native and invasive). The JWMS was attended by 20 scientists from 14 countries. The main objective of the workshop was to provide a forum for scientists to present and discuss the results of ongoing relevant research projects in the North Atlantic and Mediterranean. The 13 presentations stimulated wide ranging discussions relevant to Mnemiopsis science.Highlights• The latest knowledge regarding the biogeography and ecology of Mnemiopsisleidyi and of its Beroe predators were reviewed, as well as the spatialandtemporal occurrences across the ICES-CIESM sea basins. It was recognizedthat Beroe spp. are not the only predators of M. leidyi and that thevarious interactions of M. leidyi with the different components of the ecosystem,as well as mechanisms involved, are too complex to be comprehensivelyunderstood.• Mnemiopsis leidyi is most likely exhibiting source-sink population dynamicswithin its European range.• European seas are warming at present, and temperature is likely to affectthe timing and distribution of both M. leidyi and Beroe spp. in those areas.However, the link with temperature was questioned, and the hypothesiswas put forward, that food web pertubations from overfishing combinedwith eutrophication in coastal areas and major influx of invasive aliens,have permitted the establishment of Mnemiopsis propagules in some areas.• M. leidyi has a wide environmental tolerance and phenotypic variability.Environmental conditions influence the development of M. leidyi, howeverit can establish in highly contrasting ecosystems. Its morphological features,growth rate, metabolism, size of maturity, fecundity differ accordingto environmental conditions particularly considering salinity, temperature,productivity and prey concentration.• Modelling tools, based on experimental physiological knowledge, help topredict/understand the aforementioned processes and interactions. Severalapproaches were presented and discussed.• At the same time it was acknowledged that there is not enough informationon M. leidyi occurrence, seasonal and interannual variability in some areas, particularly in northern Europe and specific areas of the MediterraneanSea. Improved monitoring and more comprehensive coverage ofinvestigated areas are therefore deemed necessary, in particular field investigations of overwintering areas are needed.• A key parameter to understand population dynamics is the winter biologyof M. leidyi. Therefore more research effort should be devoted (i) to understandthe low temperature/low food environmental interactions with M. leidyi and its survival under these conditions; (ii) to identify sites of overwinteringpopulations.• Citizen science may provide a valuable tool to improve our knowledge onpoorly monitored areas, and should be encouraged.",
author = "ICES and Lies Vansteenbrugge",
year = "2014",
language = "English",
booktitle = "ICES CM 2014/SSGHIE:14",

}

RIS

TY - CHAP

T1 - Report of the Joint CIESM/ICES Workshop on Mnemiopsis Science (JWMS) (contribution of Lies Vansteenbrugge)

AU - ICES

AU - Vansteenbrugge, Lies

PY - 2014

Y1 - 2014

N2 - The ICES/CIESM Joint Workshop on Mnemiopsis Science (JWMS) chaired by Sophie Pitois (UK) and Tamara Shiganova (Russia), met in A Coruña, Spain from 18 to 20 September 2014. Scientists affiliated with the International Council for the Exploration of the Sea (ICES) and the Mediterranean Science Commission (CIESM) participated in the Joint Workshop to discuss the latest advances regarding the biogeography, ecology, impact and economic aspects of the invasive ctenophore Mnemiopsis leidyi and its Beroe predators (both native and invasive). The JWMS was attended by 20 scientists from 14 countries. The main objective of the workshop was to provide a forum for scientists to present and discuss the results of ongoing relevant research projects in the North Atlantic and Mediterranean. The 13 presentations stimulated wide ranging discussions relevant to Mnemiopsis science.Highlights• The latest knowledge regarding the biogeography and ecology of Mnemiopsisleidyi and of its Beroe predators were reviewed, as well as the spatialandtemporal occurrences across the ICES-CIESM sea basins. It was recognizedthat Beroe spp. are not the only predators of M. leidyi and that thevarious interactions of M. leidyi with the different components of the ecosystem,as well as mechanisms involved, are too complex to be comprehensivelyunderstood.• Mnemiopsis leidyi is most likely exhibiting source-sink population dynamicswithin its European range.• European seas are warming at present, and temperature is likely to affectthe timing and distribution of both M. leidyi and Beroe spp. in those areas.However, the link with temperature was questioned, and the hypothesiswas put forward, that food web pertubations from overfishing combinedwith eutrophication in coastal areas and major influx of invasive aliens,have permitted the establishment of Mnemiopsis propagules in some areas.• M. leidyi has a wide environmental tolerance and phenotypic variability.Environmental conditions influence the development of M. leidyi, howeverit can establish in highly contrasting ecosystems. Its morphological features,growth rate, metabolism, size of maturity, fecundity differ accordingto environmental conditions particularly considering salinity, temperature,productivity and prey concentration.• Modelling tools, based on experimental physiological knowledge, help topredict/understand the aforementioned processes and interactions. Severalapproaches were presented and discussed.• At the same time it was acknowledged that there is not enough informationon M. leidyi occurrence, seasonal and interannual variability in some areas, particularly in northern Europe and specific areas of the MediterraneanSea. Improved monitoring and more comprehensive coverage ofinvestigated areas are therefore deemed necessary, in particular field investigations of overwintering areas are needed.• A key parameter to understand population dynamics is the winter biologyof M. leidyi. Therefore more research effort should be devoted (i) to understandthe low temperature/low food environmental interactions with M. leidyi and its survival under these conditions; (ii) to identify sites of overwinteringpopulations.• Citizen science may provide a valuable tool to improve our knowledge onpoorly monitored areas, and should be encouraged.

AB - The ICES/CIESM Joint Workshop on Mnemiopsis Science (JWMS) chaired by Sophie Pitois (UK) and Tamara Shiganova (Russia), met in A Coruña, Spain from 18 to 20 September 2014. Scientists affiliated with the International Council for the Exploration of the Sea (ICES) and the Mediterranean Science Commission (CIESM) participated in the Joint Workshop to discuss the latest advances regarding the biogeography, ecology, impact and economic aspects of the invasive ctenophore Mnemiopsis leidyi and its Beroe predators (both native and invasive). The JWMS was attended by 20 scientists from 14 countries. The main objective of the workshop was to provide a forum for scientists to present and discuss the results of ongoing relevant research projects in the North Atlantic and Mediterranean. The 13 presentations stimulated wide ranging discussions relevant to Mnemiopsis science.Highlights• The latest knowledge regarding the biogeography and ecology of Mnemiopsisleidyi and of its Beroe predators were reviewed, as well as the spatialandtemporal occurrences across the ICES-CIESM sea basins. It was recognizedthat Beroe spp. are not the only predators of M. leidyi and that thevarious interactions of M. leidyi with the different components of the ecosystem,as well as mechanisms involved, are too complex to be comprehensivelyunderstood.• Mnemiopsis leidyi is most likely exhibiting source-sink population dynamicswithin its European range.• European seas are warming at present, and temperature is likely to affectthe timing and distribution of both M. leidyi and Beroe spp. in those areas.However, the link with temperature was questioned, and the hypothesiswas put forward, that food web pertubations from overfishing combinedwith eutrophication in coastal areas and major influx of invasive aliens,have permitted the establishment of Mnemiopsis propagules in some areas.• M. leidyi has a wide environmental tolerance and phenotypic variability.Environmental conditions influence the development of M. leidyi, howeverit can establish in highly contrasting ecosystems. Its morphological features,growth rate, metabolism, size of maturity, fecundity differ accordingto environmental conditions particularly considering salinity, temperature,productivity and prey concentration.• Modelling tools, based on experimental physiological knowledge, help topredict/understand the aforementioned processes and interactions. Severalapproaches were presented and discussed.• At the same time it was acknowledged that there is not enough informationon M. leidyi occurrence, seasonal and interannual variability in some areas, particularly in northern Europe and specific areas of the MediterraneanSea. Improved monitoring and more comprehensive coverage ofinvestigated areas are therefore deemed necessary, in particular field investigations of overwintering areas are needed.• A key parameter to understand population dynamics is the winter biologyof M. leidyi. Therefore more research effort should be devoted (i) to understandthe low temperature/low food environmental interactions with M. leidyi and its survival under these conditions; (ii) to identify sites of overwinteringpopulations.• Citizen science may provide a valuable tool to improve our knowledge onpoorly monitored areas, and should be encouraged.

M3 - Contribution to scientific report

BT - ICES CM 2014/SSGHIE:14

ER -