Plant functional traits for species selection in tropical subsistence agroforestry … · 2019-03-05 · Plant functional traits for species selection in tropical subsistence agroforestry

CRICOS code 00025B

Plant functional traits for species selection in

tropical subsistence agroforestry systems

A case study of the Philippine National Greening Program

Michelle Mogilski

PhD Candidate

Supervisors: Prof. John Herbohn & Associate Prof. Jennifer Firn

CRICOS code 00025BCRICOS code 00025B

Restoration success often hinges on appropriate site-species matching!

Species selection should consider

• The project’s goals and objectives

• Current site biotic/abiotic conditions plus potential changing conditions

• Seed availability and genetic quality

• The ability to grow with and complement other species

• And the ability to outcompete weed species

The Challenge of Species Selection

2

Plant functional traits for species selection in tropical subsistence agroforestry systems


What influences species selection for NGP participants?

3



What influences species selection for NGP participants?

4


• Generally ad-hoc

• Seed availability/wildings

• Recommended by DENR

• Resilience

• Domestic/traditional uses

• Income generation

• Market demand

• Local knowledge

• Extension materials


What are the trends of species selection in the NGP?

5



What are the trends of species selection in the NGP?

6


• 639 named species belonging to 117 families and 392 genera

• 51 – 72% of species used were native


Biodiversity across the Regions

7


0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

2011 2012 2013 2014 2015 2016 2017

Ind

ex V

alu

e

Shannon-Weaver Diversity Index (H)

0

50

100

150

200

250

300

350

400

2011 2012 2013 2014 2015 2016 2017

Nu

mb

er

of

Sp

ecie

s

Species Richness

Luzon

Mindanao

Visayas


Frequency of Families in NGP Plantings (2011-2017)

8


0

5

10

15

20

25

Rel

ativ

e Fr

equ

en

cy (

%)

• 50.5% of species were Fabaceace > Malvaceae > Moraceace > Meliaceae

• The top 20 families represent 94% of the species


Frequency of Genera in NGP Plantings (2011-2017)

9


Narr

a*

Mahog

any*

Falc

ata

*

Yem

ane

*

Ipil-

Ipil*

e.g

. A

uri

e.g

. M

ola

ve

Kakaw

ate

*

e.g

. B

akauan

Dungon*

e.g

. R

ub

be

r

Co

ffee

Cacao*

Ram

buta

n*

Lanzones*

e.g

. L

an

gka

Durian

Mangg

a

e.g

. A

tis

e.g

. L

em

on

0

1

2

3

4

5

6

7

8

9

10

Rela

tive F

requency (

%)

Wood

Rubber

Fruit

• 77% of the species are represented by these 20 genera• 10 of the genera are represented by a single species


Commodity Diversity

10


0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

2011 2012 2013 2014 2015 2016 2017 2018

Ind

ex

Va

lue

Shannon-Weaver Diversity (H) of Commodities

Luzon

Mindanao

Visayas

• Timber

• Fuelwood

• Fruit

• High Value Crops

(Cacao/Coffee)

• Indigenous species

• Fast Growing species

• Rubber/latex

• Bamboo

• Rattan

• Urban/Ornamental

• Mangrove

• Reforestation

• Etc.


• Indigenous

• Fast Growing

• Premium timber

Narra (Pterocarpus indicus)

11


Nangka (Artocarpus heterophyllus)

• Indigenous

• Fruit

• Timber

• Fuelwood


• Indigenous, Fast Growing

• Premium timber

• Moderate Drought Tolerance

• Low susceptibility to Pest and Disease

• Important wildlife habitat

• Nitrogen Fixing

• Soil stabiliser/erosion control

• Windbreak

• Shade/shelter

• Apiculture (honey source)

• Tannin (kino)

• Ornamental

Narra (Pterocarpus indicus)

12


Nangka (Artocarpus heterophyllus)

• Indigenous

• Fruit/Timber/Fuelwood

• Moderate Drought Tolerance

• Weed suppressing (Imperata)

• Soil stabiliser/erosion control

• Windbreak

• Shade/shelter

• Intercropping

• Medicinal uses

• Tannin

• Latex/resin


• A feature of a species linked to a specific role it plays in the ecosystem (effect trait)

• Capacity to respond to a given disturbance or environmental change (response trait)

• Can be morphological, physiological, biochemical or reproductive

What is a functional trait?

13


Root characteristics

(Nitrogen fixing)

Growth rate

(Slow)

Dispersal method

(Water/wind)


• Overcome abiotic/biotic barriers to restoration success

• Invasion resistance (niche limitation)

• Functional diversity promotes niche complementarity

• Create adaptive/resilient communities

• Introduce desired or lost ecosystem functions/services

Functional Traits = Theory-driven Restoration

14


Laughlin, D.C. (2014). Applying trait-based models to achieve functional targets for theory-driven ecological restoration. Ecology Letters. 17(7): 771-784. https://doi-org.ezproxy.library.uq.edu.au/10.1111/ele.12288

https://doi-org.ezproxy.library.uq.edu.au/10.1111/ele.12288


Selecting functional traits for socio-economic benefit

15


“…beyond timber, soil

erosion, biodiversity, and

carbon, there is also a

tangible forest, daily visited,

harvested, and reshaped by

farmers” (Michon et al. 2007)

Michon, G., H. De Foresta, P. Levang, and F. Verdeaux 2007. Domestic forests: a new paradigm for integrating local communities’ forestry into tropical forest science. Ecology and Society 12(2): 1.

[online] URL: http://www.ecologyandsociety.org/vol12/iss2/art1/

Image adapted from Díaz S, Fargione J, Chapin FS III, Tilman D (2006) Biodiversity Loss Threatens Human Well-Being. PLOS Biology 4(8): e277. https://doi.org/10.1371/journal.pbio.0040277

FUNCTIONAL


• Continue exploring trends in NGP species selection data

• Find functional traits and traditional uses for commonly utilised species

• Determine how these traits relate to restoration goals, especially for

socioeconomic outcomes

• Determine which traits are complementary in mixed-species plantations

I welcome any other ideas or collaboration!

16


Future Directions

CRICOS code 00025B

Thank you!

Email: [email protected]

Plant functional traits for species selection in tropical subsistence agroforestry … · 2019-03-05 · Plant functional traits for species selection in tropical subsistence agroforestry

Documents