Global Ecology and Oceanography of Harmful Algal Blooms For more information see http://www.geohab.info

Liste des unités de recherche

Dépôts récents

  • Harmful Algal Blooms. A scientific Summary for Policy Makers.

    Kudela, R.M.; Berdalet, E.; Bernard, S.; Burford, M.; Fernand, L.; Lu, S.; Roy, S.; Tester, P.; Usup, G.; Magnien, R.; et al. (UNESCO-IOC, 2015)
    • Harmful Algal Blooms (HABs) result from noxious and/or toxic algae that cause direct and indirect negative impacts to aquatic ecosystems, coastal resources, and human health. • HABs are present in nearly all aquatic environments (freshwater, brackish and marine), as naturally occurring phenomena. • Many HABs are increasing in severity and frequency, and biogeographical range. Causes are complex, but in some cases can be attributed to climate change and human impacts, including eutrophication, habitat modification, and human- mediated introduction of exogenous species. • There is no plan, and nor realistic possibility, to eliminate HABs and/or their depend-ent consequences. Decades of research and monitoring have, however, improved our understanding of HAB events, leading to better monitoring and prediction strate-gies. • HABs are a worldwide phenomenon requiring an international understanding leading ultimately to local and regional solutions. Continued progress in research, management, mitigation, and prediction of HABs benefits from international coordination. In this spirit, the international community has developed programmes sponsored by the Intergovernmental Oceanographic Commission (IOC) and Scientific Committee on Oceanic Research (SCOR) to coordinate international HAB research, framework activities, and capacity building. • HABs are recognized as one facet of complex ecosystem interactions with human society. HAB research, monitoring, and management must be closely integrated with policy decisions that affect our global oceans. • New initiatives, such as GlobalHAB sponsored by IOC and SCOR, will continue to provide the mechanisms to further understand, predict, and mitigate HABs. Research, management, and mitigation efforts directed towards HABs must be coordinated with other local, national, and international efforts focused on food and water security, human and ecosystem health, ocean observing systems, and climate change.
  • GEOHAB Core Research Project: HABs in Benthic Systems.

    Berdalet, E.; Tester, P.; Zingone, A. (IOC and SCOR, 2012)
    Harmful events associated with benthic microalgae (BHABs), have been reported more frequently over the last decade including in areas where BHAB genera were hardly known. Of particular concern are the out- breaks of Gambierdiscus, a toxic dinoflagellate genus associated to the ciguatera fish poisoning (CFP). The ciguatoxins produced by Gambierdiscus are bioaccumulated in reef fishes and are responsible for the most common algal toxin-related illnesses, globally affecting the greatest number of victims and often with sig- nificant long-term health effects. Although traditionally considered as a tropical sickness, CFP is also being recently reported on subtropical waters and the Mediterranean Sea, and new species of Gambierdiscus have been identified in these areas.
  • GEOHAB Core Research Project: HABs in Stratified Systems.

    Gentien, P.; Reguera, B.; Yamazaki, H.; Berdalet, E.; Raine, R.; Fernand, L. (IOC and SCOR, 2008)
    Based on contributions by participants of the GEOHAB Open Science Meeting on HABs in Stratified Systems and members of the GOEHAB Scientific Committee.
  • Global Ecology and Oceanography of Harmful Algal Blooms in Asia: A Regional Comparative Programme.

    Furuya, Ken; Glibert, Patricia M; Zhou, Mingjiang; Raine, Robin (IOC and SCOR, 2010)
    Based on contributions by the participants of the 1st and 2nd Asian GEOHAB Meetings 2007, 2008.
  • GEOHAB Core Research Project: HABs in Fjords and Coastal Embayments

    Roy, S.; Diogène, J.; Cembella, A.; Guzmán, L. (IOC and SCOR, 2010)
    The report was developed following workshop discussions with the Ocean Science Meeting International Organizing Committee and attending members of the GEOHAB Scientific Steering Committee, including Allan Cembella (Germany), Einar Dahl (Norway), Patricia Glibert (USA), Leonardo Guzmán (Chile), Bengt Karlson (Sweden), Grant Pitcher (South Africa), Robin Raine (Ireland), and Suzanne Roy (Canada). We further appreciate the ontributions to this document provided by those presenting plenary lectures on the key topics
  • Global Ecology and Oceanography of Harmful Algal Blooms, HABs in Eutrophic Systems.

    Glibert, P.M. (IOCSCOR, 2006)
    Nutrient enrichment of both land and water is a result of increased human population growth and many associated activities for food and energy production, and discharge of associated sewage and waste. The end result of nutrient loading to inland and coastal waters is often an increase in algal biomass, frequently dominated by one or more species or species groups; this process is eutrophication. An important consequence of eutrophication is the increased prevalence of harmful algal blooms (HABs) that develop high biomass, cause fish kills, intoxicate seafood, result in oxygen depletion, and alter trophic interactions. Nutrient enrichment can stimulate HABs not only directly by stimulation of growth and biomass, but indirectly in subtle, but nevertheless significant, ways through alterations in food web and ecosystem dynamics. The interactions of these alterations on HAB proliferation is only beginning to be understood.
  • Global Ecology and Oceanography of Harmful Algal Blooms, Implementation Plan.

    Gentian, P.; Pitcher, G.; Cembella, A.; Glibert, P. (IOC and SCOR, 2003)
    This document describes a Implementation Plan reviewed and approved by the Scientific Commission on Oceanic Research (SCOR) and the Intergovernmental Oceanographic Commission (IOC) of the U.N. Education, Scientific, and Cultural Organisation (UNESCO)
  • GEOHAB Core Research Project

    Figueiras, F.; Moita, T.; Pitcher, G.; Trainer, V.; Kudela, R.; Probyn, T. (IOC and SCOR, 2005)
    Based on contributions by participants of the GEOHAB Open Scence Meeting on HABS in Upwelling Systems and the GEOHAB Scientific Steering Committee.
  • Global Ecology and Oceanography of Harmful Algal Blooms, Science Plan

    Glibert, P.; Pitcher, G. (IOC and SCOR, 2001)
    This document describes a Science Plan reviewed and approved by the Scientific Commission on Oceanic Research (SCOR) and the Intergovernmental Oceanographic Commission (IOC) of the U.N. Education, Scientific, and Cultural Organisation (UNESCO)