Background: Ecological communities: Structure, Stability & - - PowerPoint PPT Presentation

background ecological communities structure stability
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Background: Ecological communities: Structure, Stability & - - PowerPoint PPT Presentation

Background: Ecological communities: Structure, Stability & Functioning Understand community structure, Networks of stability and functioning networks Food web ecology Predict community responses to Temporal perturbation


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SLIDE 1

Background: Ecological communities: Structure, Stability & Functioning

  • Understand community structure,

stability and functioning

  • Predict community responses to

perturbation and restoration

‘Networks of networks’ Temporal dynamics Multiple functions/ services Species interactions Quantifying stability Biodiversity- Ecosystem Functioning Food web ecology Complexity- Stability Restoration ecology

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SLIDE 2

‘Networks of networks’ Temporal dynamics Quantifying multiple functions/services Species interactions Quantifying stability Biodiversity- Ecosystem Functioning Food web ecology Complexity-Stability Restoration ecology

Current project: Provisioning & Stability of multiple ecosystem services in agroecosystems

Agroecology

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SLIDE 3

Current project: Provisioning & Stability of multiple ecosystem services in agroecosystems

Mo Motivation

ES t trade-offs: C Crop yie ield ld – Po Pollination - Bi Biodiver ersi sity Mean & & S Stability o

  • f E

ES p provision Role o

  • f s

semi-natural h habitat ( (SNH)

Qu Ques estio ions

What a are t the t trade-offs i in m mean a and s stability o

  • f

multiple E ES i in a agroecosystems? D Do t they d depend

  • n t

the a amount o

  • f S

SNH a and c crop p pollination de depe pende dence? What i is t the o

  • ptimum a

amount o

  • f S

SNH t to p provide a h high a and s stable c crop y yield?

Me Methods

Model f for c crop y yield d dynamics ( (ODE)

C (t)=(1−ωsn) A[Z C+ α C[ P(t)/ A] β C+[ P (t)/ A]](1+σ C (t )

e

uC (t)

e

) dP dt =r P P(t)(1− P(t) k Pωsn A )+σ P(t)

e

u P(t)

e

P(t )+σ P(t)

d

uP(t )

d

√P (t)

P(t) dW dt =rW W (t )(1− W (t ) k W ωsn A )+σ W (t)

e

uW (t )

e

W (t )+σ W (t)

d

uW (t)

d

√W (t)

W (t)

Re Resul ults

Insight i into t the e ecological m mechanisms d driving E ES tr trade-offs i in a agricultural s systems SNH, c crop p pollination d dependence a and c crop r relative responsiveness t to b biodiversity l levels d drive E ES t trade-of

  • ffs

Implications f for a agricultural p pollination