Biodiversity

Biodiversity Biodiversity - Start

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. hotspots. of . primary. . producers. . at. the global . scale. Alice . Soccodato. In collaboration . with. : . d’. Ovidio. F, De Monte S, Levy M, . Follows. M, . Alvain. S. . L. iege. – Friday 17 May 2013. ID: 361435 Download Presentation

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Biodiversity




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Presentations text content in Biodiversity

Slide1

Biodiversity

hotspots of primary producers at the global scale

Alice SoccodatoIn collaboration with: d’Ovidio F, De Monte S, Levy M, Follows M, Alvain S.

Liege – Friday 17 May 2013

Slide2

Why

do we care about biodiversity?

Cadotte

2006

alpha

gamma

Individuals

allelic diversity, activity rates, susceptibility, survival, natural selection

Ecosystem: resistance & resilience, functioning & services

Species & communities: migration, dispersal, blooming, diapose, ecological niche, range size and localization, (di)synhcronization, (dis)equilibrium, (un)coupling, energy flux, matter flux

beta

Slide3

Microbes canbe disperseduniversally but onlymeasurable whereconditions promotetheir growth.

Everything is everywhere but environment selects”(Baas-Becking 1934)

Slide4

S

pecies distributions and successions are based

on a phase-space defined by energy and nutrients

Slide5

Which are the ecological controls of phytoplankton biodiversity in the (sub)-mesoscale open ocean?- biophysical mechanisms (role of stirring) structuring meso- and sub-mesoscale distribution of phytoplankton species or functional types, aggregation and dispersion;- mapping biodiversity hotspots and gradients by integrating remote sensing, models and in situ data;

Slide6

Methods

Data:Multisatellite data (altimetry, SST, Chl);Darwin model (Follows et al. 2007; Barton et al.2010);in-situ observations of planktonic communities;Analyses:- Physat algorithm: chl spectra phytoplankton dominant group (Alvain et al. 2008, 2012);- Lagrangian diagnostics: surface currents transport fronts, mixing regions and origin of water masses (F. d'Ovidio et al. 2010);- Biodiversity measures: remote sensed, model simulations and in-situ data hotspots.

Slide7

P

hytoplankton

biogeography

Follows

et al. 2007

Physat

Slide8

Horizontal stirring and phytoplankton

communities: towards the definition of a new biodiversity index

Area-

based

Shannon entropy Index

high

low

Slide9

Global patterns of area-based diversity

Hotspots by remote sensing

Hotspots by Darwin Model

Slide10

Alpha vs area-based biodiversity

Darwin model

Darwin model satellite (De Monte S, Soccodato A, et al 2013)

Alpha

Area-

based

Slide11

A

lpha vs area-based biodiversity

Darwin

alpha

biodiversity

hotspots

Slide12

Alpha vs area-based biodiversity

Darwin

Alpha

+ Darwin

area-

based

biodiversity

hotspots

Slide13

Alpha vs area-based biodiversity

Darwin Alpha

+ Darwin area-

based

+

Physat

area-

based

biodiversity

hotspots

Slide14

Alpha vs area-based biodiversity:in-situ nano-microplankton biodiversity

De Monte S,

Soccodato A, et al. 2013

Alpha div. (AMT)

Area-

based

div. (satellite)

Slide15

Alpha vs area-

based

biodiversity

:

i

n-situ

biodiversity

through

taxa

Slide16

Alpha vs area-

based

biodiversity

:

i

n-situ

biodiversity

through

taxa

Slide17

Biodiversity

vs temperature

Stegen et al. 2012

De

Monte S,

Soccodato A, et al. 2013

Area-based diversity vs SST

Metabolic diversity vs T

Tittensor

et al. 2010

Oceanic

diversity

vs SST

Slide18

Stirring creates environmental heterogeneity structuring phytoplankton distributionInformation on the alpha biodiversity of the whole phytoplankton community can be retrieved from just looking at the patchiness of dominant phytoplankton typesPatchiness happears as a functional structure of the pelagic environment with possible bottom up effect on the trophic chain.

Conclusions

Slide19

Thanks!

Any questions?

I'm all ears!

Btw I’m a fenneck!

Slide20

Alpha vs area-based biodiversity

Barton

et al

. 2010 Vallina et al. submitted

Darwin model satellite (De Monte S, Soccodato A, et al 2013)

Alpha

Area-

based

Slide21

Temporal diversity

Slide22

Slide23

Cadotte

2006

α,β,γ

D

iversity

Slide24

Slide25

Slide26

Slide27

Slide28

Slide29


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