Biodiversity influences on mangrove forest ecosystem services delivery Clare Duncan 1,2 , Jurgenne H. Primavera 3,4 , Heather J. Koldewey 3,5 , Julian R. Thompson 2 , Nathalie Pettorelli 1 1 Institute of Zoology, ZSL, Regent’s Park, London NW1 4RY UK 2 UCL Department of Geography, Gower Street, London WC1E 6BT UK 3 ZSL Conservation Programmes, Regent’s Park, London NW1 4RY UK 4 ZSL-Philippines, 43-E Burgos Street, Barangay Magdalo, La Paz, 5000 Iloilo City, Philippines 5 Centre for Ecology and Conservation, University of Exeter, Penryn, Cornwall TR10 9EZ UK
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Biodiversity influences on mangrove
forest ecosystem services delivery
Clare Duncan1,2, Jurgenne H. Primavera3,4,
Heather J. Koldewey3,5, Julian R. Thompson2, Nathalie Pettorelli1
1 Institute of Zoology, ZSL, Regent’s Park, London NW1 4RY UK
2 UCL Department of Geography, Gower Street, London WC1E 6BT UK
3 ZSL Conservation Programmes, Regent’s Park, London NW1 4RY UK
4 ZSL-Philippines, 43-E Burgos Street, Barangay Magdalo, La Paz, 5000 Iloilo City, Philippines
5 Centre for Ecology and Conservation, University of Exeter, Penryn, Cornwall TR10 9EZ UK
Current state of play…
• Mangroves are in global decline
FAO (2005).
Richards & Friess (2016).
• Loss of climate change
mitigation & adaptation
(CCMA) ES
Martine Perret.
International Labour.
Current state of play…
• Diversity is also declining
Polidoro et al. (2010).
DISTRIBUTION OF THREATENED SPECIES
• Mid- to upper-intertidal; selective cutting
Current state of play…
• Rehabilitation efforts often
species-poor or monoculture
Jurgenne H. Primavera.
Current state of play…
What does this mean for mangrove ES?
Does floristic diversity drive climate change
mitigation and adaptation ecosystem
services (ES) of mangrove forests?
• Terrestrial forests: flora richness can increase ecosystem functioning
• Mechanism = functional
differences
(complementarity in
resource use or
facilitation)
• Species richness not
important?
Gamfeldt et al. (2013).
Biodiversity & ES
• Terrestrial forests: saturating or mixed relationships
• Mechanism = functional
identity of the most
dominant species
• Could these mechanisms
= ES trade-offs?
Gamfeldt et al. (2013).
Biodiversity & ES
Complementarity in Mangroves…?
1: Leitão (2016).
• Species-poor systems – complementarity/facilitation may be strong?1
Complementarity in Mangroves…?
1: Leitão (2016).
• Species-poor systems – complementarity/facilitation may be strong?1
Lang’at et al. (2011).
1: Leitão (2016).
Complementarity in Mangroves…?
• Species-poor systems – complementarity/facilitation may be strong?1
• Many forests monospecific & still function fine – dominant species?
Huxham et al. (2010).
1: Leitão (2016).
Complementarity in Mangroves…?
• Species-poor systems – complementarity/facilitation may be strong?1
• Many forests monospecific & still function fine – dominant species?
• Narrow niche space & water constraints = morphological convergence
1: Leitão (2016).
Complementarity in Mangroves…?
• Species-poor systems – complementarity/facilitation may be strong?1
• Many forests monospecific & still function fine – dominant species?
• Narrow niche space & water constraints = morphological convergence