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Ammonium is the preferred source of nitrogen for planktonic foraminifer and their dinoflagellate symbionts
2020
Proceedings of the Royal Society of London. Biological Sciences
The symbiotic planktonic foraminifera Orbulina universa inhabits open ocean oligotrophic ecosystems where dissolved nutrients are scarce and often limit biological productivity. It has previously been proposed that O. universa meets its nitrogen (N) requirements by preying on zooplankton, and that its symbiotic dinoflagellates recycle metabolic 'waste ammonium' for their N pool. However, these conclusions were derived from bulk 15N-enrichment experiments and model calculations, and our
doi:10.1098/rspb.2020.0620
pmid:32546098
fatcat:m4vb4pvsjvczfpzsuglj6umksa