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Flaws

Behaviour is linked to life history

Behaviour mediates some life history mechanisms

XIV JORNADA CREAF SCB ICHN

21 de novembre de 2017

What makes a successful invader?

Life history

Life history theory

Life History

Traits

Paul Ehrlich

1983

"Ecologists cannot accurately predict the results of a single invasion event."

Integrating behaviour

Population growth Theory

Richard Lewontin

Sol et al (2005) PNAS

Sol & Lefebvre (2000) Oikos

Time

Classical theory

Sol et al. Submitted

Sol et al. 2016 Phil Trans B

Desvelar el papel del comportamiento como nexo entre estrategias vitales y respuesta a los HIREC

P

N

Model

Estimate

SE

Z

Rmax

1,615

-0.283

0.198

-1.43

0.153

568

Rmax + propagule

-0.104

0.295

-0.35

0.725

Binomial GLMM

Sol et al. (2012) Science

Maspons & Sol, in prep.

Towards a more general life history theory for biological invasions

New life history mechanisms

Cost of reproduction

Flaws

Extending the theory

Routes toward extinction

Flaws of theory

Sol et al. 2012 Science

Sol et al. (2017) Ecol. Lett.

The integrative value of life histories

Ricklefs 2002 TREE

Daniel Sol

CREAF-CSIC

Urban

Non-urban

Case (1996) Conserv Biol

Sol et al. (2017) Ecol Lett

Response Mechanisms

Life history Strategies

Extinction routes

Population growth

Demographic stochasticity

Fast-lived strategy

Life history buffer

Slow-lived strategy

Negative population growth

A novel environment leads to adaptive mismatches-uncertainities

Behaviour helps reduce mismatches and uncertainties

Bet-hedging

Storage effect

Cognitive buffer

Small founder populations increase the risk of demographic accidents

Environmental matching

Environmental overlap

Environmental shift

Demographic stochasticity

Environmental uncertainty

Adaptive mismatch

Multiple broods

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