Deep-sea sponge grounds: Reservoirs of biodiversity

• Main Authors: M.M. Hogg, O.S. Tendal, K.W. Conway, S.A. Pomponi, R.W.M. van Soest, J. Gutt, M. Krautter, J.M. Roberts
• Format: Report
• Language: English
• Published: UNEP-WCMC, Cambridge, UK 2010
• Subjects: Antarc*; Antarctica
• Online Access: http://hdl.handle.net/11245/1.344588

This report draws together scientific understanding of deep-water sponge grounds alongside the threats they face and ways in which they can be conserved. Beginning with a summary of research approaches, sponge biology and biodiversity, the report also gives up-to-date case studies of particular deep-water sponge habitats from around the world. These include the spectacular giant glass sponge reefs of British Columbia - a relic of the time of the dinosaurs - and the diverse sponge kingdom of Antarctica. Long-overlooked, recent research now shows that deep-water sponge grounds form complex, slow-growing and long-lived habitats in many parts of the global ocean. As well as forming local biodiversity centres, deep-water sponges are also storehouses of novel chemical compounds, some of which show promise in the fight against cancer and other diseases. Despite their inherent and biotechnological value, deep-water sponge grounds have been damaged by bottom fishing. This report considers the international policy context in which deep-water sponge grounds can be conserved and concludes with a series of expert recommendations for conservation managers and international policy makers. The recommendations set out a series of actions so that these vulnerable marine ecosystems can be conserved for future generations.