mangrove mapping in macajalar bay - flr 2019 - home...mangrove forests provide many ecosystem...
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Macajalar Bay
• Major fishing ground of northern Mindanao.
• Use as thoroughfares of cargo and passenger ships and boats.
• Coastal municipalities and cities were formed into Macajalar Bay
Development Alliance (MBDA).
INTRODUCTION : Study area
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Mangrove forests
Provide many ecosystem
services:
• Coastal protection from
extreme wave action.
• Erosion control.
• Carbon sequestration.
• Maintenance of fisheries.
INTRODUCTION
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RATIONALE
• Decline of mangrove forest cover by almost 70% since 1900s prompted intense rehabilitation initiatives.
• Indiscriminate planting without considering species-site suitability.
• Ecological alteration and waste of time and resources.
(2015, March 19). STOP SEAFRONT PLANTING OF
MANGROVES ON SEAGRASS BEDS. Retrieved from
http://mangroveactionproject.blogspot.com/2015/03/stop-seafront-
planting-of-mangroves-on.htm
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RATIONALE
Interconnected Marine ecosystems
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Assess mangrove
forestsEnhance
knowledge
management and
Communication,
Education, and
Public Awareness
(CEPA)
campaigns
Facilitate & strengthen
mangrove forest
livelihood &
management
initiatives
Sustainable management of Macajalar Bay
mangrove forests
1.1 Determine
biophysical profile of
mangrove areas
1.2 Determine impacts of
sedimentation and
siltation on mangrove
ecosystems 2.1 Produce GIS-based
map
2.2 Produce CEPA
materials
3.1 Establish 3 mangrove
nurseries
3.2 To conduct learning visits in
the mangroves in Zamboanga
Sibugay
3.3 To facilitate workshops and
public presentations
OBJECTIVES
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Parameters and other mangrove info
Municipality of Laguindingan
Site type: Potential – AUU fish
pond
Area: 3 ha
Tenurial status: ______
Substrate: __________
Suitable species: ______
Tidal inundation: ________
Elevation/tidal zone: _______
Natural vegetation: _______
Water quality: °C__ ppt __ pH
_____
Notes: ______________
Site type: Mature
Area: 3 ha
Species composition: ________
Species diversity: ______
Forest cover/density:
__________
Presence of seedlings: _____
Erosion/accretion: ________
Height of trees: __________
Notes: ______________
Site type: Newly-planted
Area: 3 ha
Species planted: ________
Soil/substrate: ________
Survival rate: _______
Height of seedlings: _____
Description of plants
(health): ____
Water quality: °C__ ppt __ pH
_____
Notes: ______________
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METHODOLOGY
• Transect-plot method
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METHODOLOGY
• Line-intercept method
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METHODOLOGY
• Line-intercept method
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METHODOLOGY
• Measuring the GBH (girth
at breast height)
• Sonneratia alba
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METHODOLOGY: Water analysis
• Measuring pH and temperature • Measuring salinity
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• Some mangrove areas are difficult to access.
CHALLENGES
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CHALLENGES
• Abandoned fishponds posed
difficult accessibility.
• Adverse weather conditions like heavy continuous rains delayed the work.
• New mangroves were not accounted for in the reconnaissance survey.
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SUMMARY
• Give science-based recommendations.
• Establish relationship with LGUs and fisherfolks organizations.
• Provide CEPA materials on the importance of mangroves.
• Provide an inventory of mangrove species in Macajalarbay.
• Generate an updated GIS-based mangrove map.
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Thanks
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INITIAL DATA : Mangrove Area
1950 vs 2018 Mangrove area in Macajalar bay
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