Pubblicazione scientifica

Large-scale ocean connectivity and planktonic body size

FILONE TECNOLOGICO	TEMA
produzione e cattura

RIASSUNTO

Global patterns of planktonic diversity are mainly determined by the dispersal of propagules with ocean currents. However, the role that abundance and body size play in determining spatial patterns of diversity remains unclear. Here we analyse spatial community structure - β-diversity - for several planktonic and nektonic organisms from prokaryotes to small mesopelagic fishes collected during the Malaspina 2010 Expedition. β-diversity was compared to surface ocean transit times derived from a global circulation model, revealing a significant negative relationship that is stronger than environmental differences. Estimated dispersal scales for different groups show a negative correlation with body size, where less abundant large-bodied communities have significantly shorter dispersal scales and larger species spatial turnover rates than more abundant small-bodied plankton. Our results confirm that the dispersal scale of planktonic and micro-nektonic organisms is determined by local abundance, which scales with body size, ultimately setting global spatial patterns of diversity.

DATA

Data di pubblicazione: 10/01/2018

AUTORI

VILLARINO ERNESTO
WATSON JAMES R
JONSSON BROR
GASOL JOSEP M
SALAZAR GUILLEM
ACINAS SILVIA G
ESTRADA MARTA
MASSANA RAMON
LOGARES RAMIRO
GINER CATERINA R
PERNICE MASSIMO C
OLIVAR M PILAR
CITORES LEIRE
CORELL JON
RODRIGUEZ-EZPELETA NAIARA
ACUNA JOSE LUIS
MOLINA-RAMIREZ AXAYACATL
GONZALEZ-GORDILLO J IGNACIO
COZAR ANDRES
MARTI ELISA
CUESTA JOSE A
AGUSTI SUSANA
FRAILE-NUEZ EUGENIO
DUARTE CARLOS M
IRIGOIEN XABIER
CHUST GUILLEM

RIVISTA

Nature Communications, 9, 142

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