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A three-stage symbiosis forms the foundation of seagrass ecosystems van der Heide, T.; Govers, L.L.; de Fouw, J.; Olff, H.; van der Geest, M.; van Katwijk, M.M.; Piersma, T.; van de Koppel, J.; Silliman, B.R.; Smolders, A.J.P.; van Gils, J.A. (2012). A three-stage symbiosis forms the foundation of seagrass ecosystems. Science (Wash.) 336(6087): 1432-1434. dx.doi.org/10.1126/science.1219973 In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075; e-ISSN 1095-9203, meer

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Beschikbaar in	Auteurs
VLIZ: Non-open access 236036 [ aanvragen ]

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Trefwoorden

Ecosystems Interspecific relationships > Symbiosis Seagrass Marien/Kust

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Auteurs		Top
van der Heide, T. Govers, L.L. de Fouw, J., meer Olff, H.	van der Geest, M., meer van Katwijk, M.M., meer Piersma, T., meer van de Koppel, J., meer	Silliman, B.R. Smolders, A.J.P. van Gils, J.A., meer

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Abstract

Seagrasses evolved from terrestrial plants into marine foundation species around 100 million years ago. Their ecological success, however, remains a mystery because natural organic matter accumulation within the beds should result in toxic sediment sulfide levels. Using a meta-analysis, a field study, and a laboratory experiment, we reveal how an ancient three-stage symbiosis between seagrass, lucinid bivalves, and their sulfide-oxidizing gill bacteria reduces sulfide stress for seagrasses. We found that the bivalve-sulfide-oxidizer symbiosis reduced sulfide levels and enhanced seagrass production as measured in biomass. In turn, the bivalves and their endosymbionts profit from organic matter accumulation and radial oxygen release from the seagrass roots. These findings elucidate the long-term success of seagrasses in warm waters and offer new prospects for seagrass ecosystem conservation.

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