title: Can we detect oceanic biodiversity hotspots from space?
abstract: Understanding the variability of marine biodiversity is a central issue in microbiology. Current observational programs are based on in situ studies, but their implementation at the global scale is particularly challenging, owing to the ocean extent, its temporal variability and the heterogeneity of the data sources on which compilations are built. Here, we explore the possibility of identifying phytoplanktonic biodiversity hotspots from satellite. We define a Shannon entropy index based on patchiness in ocean color bio-optical anomalies. This index provides a high resolution (1 degree) global coverage. It shows a relation to temperature and mid-latitude maxima in accordance with those previously evidenced in microbiological biodiversity model and observational studies. Regional maxima are in remarkable agreement with several known biodiversity hotspots for plankton organisms and even for higher levels of the marine trophic chain, as well as with some in situ planktonic biodiversity estimates (from Atlantic Meridional Transect cruise). These results encourage to explore marine biodiversity with a coordinated effort of the molecular, ecological and remote sensing communities.
authors: 1] Ecole Normale Supérieure, Ecologie et Evolution, Paris, France [2] Université Pierre et Marie Curie-Paris 6, Ecologie et Evolution, Paris, France [3] CNRS, Ecologie et Evolution, Paris, France.
authors: Silvia
authors: S
authors: De Monte
authors: Alice
authors: A
authors: Soccodato
authors: Séverine
authors: S
authors: Alvain
authors: Francesco
authors: F
authors: d'Ovidio
mesh_terms: D001483:Base Sequence; D044822:Biodiversity; D057446:Hydrodynamics; D008962:Models, Theoretical; D009792:Oceans and Seas; D010839:Phytoplankton / Q000502:physiology*; D063809:Satellite Imagery; D013696:Temperature
references: Mol Syst Biol. 2011 Mar 15;7:473
references: 21407210
references: PLoS One. 2011;6(5):e19653
references: 21625431
references: ISME J. 2007 Oct;1(6):469-70
references: 18043648
references: Am Nat. 2004 Feb;163(2):192-211
references: 14970922
references: PLoS One. 2011;6(9):e24570
references: 21931760
references: Nature. 2004 Jun 24;429(6994):863-7
references: 15215862
references: Science. 2005 Aug 26;309(5739):1365-9
references: 16051749
references: PLoS Biol. 2011 Oct;9(10):e1001177
references: 22028628
references: PLoS Biol. 2007 Mar;5(3):e77
references: 17355176
references: Science. 2010 Mar 19;327(5972):1509-11
references: 20185684
references: Proc Biol Sci. 2012 Mar 22;279(1731):1051-60
references: 21937497
references: Nature. 2011 Jun 22;475(7354):86-90
references: 21697831
references: Nature. 2010 Aug 26;466(7310):1098-101
references: 20668450
references: Proc Natl Acad Sci U S A. 2010 Oct 26;107(43):18366-70
references: 20974927