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Inland Fisheries Research and Development Institute
Hotel Cambodiana, Phnom Penh
17-18 October 2018
Prioritizing Data Need...
Outline
ØIntroduction
ØMigratory fish data are most needed
ØResearch priorities
ØKnowledge priorities
ØSummary
THAILAND
LAO PDR
VIET NAM
Floodplain
Tonle Sap
Mekong
Gulf of
Thailand
- Land area: 181,035 km2
- 86% within Mekong
catchm...
Importance of inland fisheries in Cambodia
• Social Access: 70% of rural households depend on fisheries
• Economic Access:...
• 850 fish species diversity recorded from the Mekong River Basin,
>60% “448 species” in Cambodian Mekong.
• 296 fish spec...
Clam
Snail
Frog
Tadpole
Snake Shrimp
PrawnTurtle
Other aquatic animals
Crocodile- Crocodylus siamensis
Dolphin of the Meko...
Introduction…
1) “Needs”
What for?
For monitoring and management
For sustained food production and for conservation
2) “Fi...
Migratory fish data are most needed
1) Update on migration routes
2) Updates on fish migration patterns
3) Updates on migr...
• What are the main migration routes or free-flowing rivers remaining?
• What will be the main migration routes in 10 and ...
• What is the overall situation (without detailing by species)
• Where are main migrations seen, how is this evolving comp...
• What is the status of dominant or endangered species: abundance,
dominance, trend
• Evolution of white fish vs. grey fis...
# of migratory fish of recent study.
• Monitor Drift of Fish Larvae and Fry in the Mekong and Tonle Sap
Rivers in Cambodia...
Cirrhinus spp.
88%
Pangasius sp.1
10%
Pangasius sp.2
1%
Pangasius
0%
Paralaubuca typus
0%
Barbonymus altus
0%
Pangasianodo...
• This is critical to identify hotspots
• Several recommendations already, but no funding of research so far
Where are the...
• Where are the hotspots and migration routes critical for the conservation of
migratory fish species in Cambodia?
• What ...
• What about the replacement of white fish by grey and black fish
when obstacles interrupt migrations?
• Will the replacem...
Research priorities
1) Update on migration routes (GIS analysis, existing information mainly
desk work ≤ one month to stud...
Knowledge priorities
1) Where are the breeding sites of migratory species
2) Identification of hotspots and key routes
3) ...
Summary
• The most important data needs for migratory fish management and
conservation in Cambodia: update on migration ro...
Thank you very much for your attention!
Prioritizing Data Needs to Support Migratory Fish Management and Conservation in Cambodia
Prioritizing Data Needs to Support Migratory Fish Management and Conservation in Cambodia
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Prioritizing Data Needs to Support Migratory Fish Management and Conservation in Cambodia

This presentation was given as part of the October 2018 workshop "Needs, Techniques, and Risk Assessment: Towards a Vision for Management and Conservation of Migratory Fish Species in Cambodia," held in Phnom Penh. It highlights areas of needed research to answer questions about migratory fishes in Cambodia, including migration routes, migration patterns, breeding sites, and habitat hotspots.

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Prioritizing Data Needs to Support Migratory Fish Management and Conservation in Cambodia

  1. 1. Inland Fisheries Research and Development Institute Hotel Cambodiana, Phnom Penh 17-18 October 2018 Prioritizing Data Needs to Support Migratory Fish Management and Conservation in Cambodia Touch Bunthang, Chheng Phen and Eric Baran Workshop “Needs, techniques and risk assessment: towards a vision for management and conservation of migratory fish species in Cambodia
  2. 2. Outline ØIntroduction ØMigratory fish data are most needed ØResearch priorities ØKnowledge priorities ØSummary
  3. 3. THAILAND LAO PDR VIET NAM Floodplain Tonle Sap Mekong Gulf of Thailand - Land area: 181,035 km2 - 86% within Mekong catchment - Floodplain: 40,000 km2 or 22% -Tonle Sap: 3,000-15,000 km2 or 8%, the largest and most productive lake in SE Asia Mekong Floodplain Cambodian map showing major inland waters Introduction
  4. 4. Importance of inland fisheries in Cambodia • Social Access: 70% of rural households depend on fisheries • Economic Access: - An estimated Value of fisheries US$ 1.2 – 1.6 billion - Value of inland fisheries = US$ 0.8 – 1.0 billion - This estimated value accounts for about 8.0-12% of Cambodia’s GDP - Over 6 million Cambodians = part-time fishing and related fishing activities = 45.5% of the total population • Food Security Access: fish consumption 52.4-63kg/person/year • Nutrition Security Access: Fish provide 76%-81.5% of total animal protein intake and other key nutrients to Cambodians. • Environmental Value: Fish production has low a carbon footprint (nitrogen) compared to beef and pork. Beef required almost 5 times more grain than fish to produce 1 kg of protein, while pork required 3 times. • Tourism Value: Cambodia fisheries attract local and international tourists. Introduction…
  5. 5. • 850 fish species diversity recorded from the Mekong River Basin, >60% “448 species” in Cambodian Mekong. • 296 fish species diversity of the Tonle Sap lake. - Grey fish 43% - White fish 40% - Black fish 17% Introduction…
  6. 6. Clam Snail Frog Tadpole Snake Shrimp PrawnTurtle Other aquatic animals Crocodile- Crocodylus siamensis Dolphin of the Mekong, Irrawady dolphin (Orcaella brevirostris)
  7. 7. Introduction… 1) “Needs” What for? For monitoring and management For sustained food production and for conservation 2) “Fish data” Numbers, but also information 3) “Prioritizing” Logical order of activities vs. order of urgency for management
  8. 8. Migratory fish data are most needed 1) Update on migration routes 2) Updates on fish migration patterns 3) Updates on migratory species 4) Where are the breeding sites of migratory species 5) Identification of hotspots and key routes 6) Replacement of migratory species
  9. 9. • What are the main migration routes or free-flowing rivers remaining? • What will be the main migration routes in 10 and 20 years from now, based on most realistic scenarios • What are these scenarios? Who is updating scenarios? • Pictures of the routes remaining in 10 and 20 years from now? • What are the scenarios for Cambodia? • Dams on Tonle Sap tributaries? Are they considered by the MRC? • What should the FiA and partners do in anticipation? Update on migratory routes
  10. 10. • What is the overall situation (without detailing by species) • Where are main migrations seen, how is this evolving compared to the past? • What is the intensity of migrations (abundance), how is this intensity evolving over time? • What is the timing of migrations, it is changing over time? • Evolution of long-distance vs. short-distance migrations Update on fish migrations
  11. 11. • What is the status of dominant or endangered species: abundance, dominance, trend • Evolution of white fish vs. grey fish vs. black fish • Are larvae and juveniles undertaking downstream migrations more, or less, at risk than adults undertaking downstream migrations? • Issue of dam reservoirs getting fish lost Updates on migratory species
  12. 12. # of migratory fish of recent study. • Monitor Drift of Fish Larvae and Fry in the Mekong and Tonle Sap Rivers in Cambodia in 2018 by IFReDI/MRC: 83 fish species, 18 families. • Dai Fishery Monitoring in the Tonle Sap River in season 2016-2017 by IFReDI/MRC: 117 fish species. • Fish abundance and diversity monitoring in 2018 by IFReDI/MRC: 252 fish species, 44 families of which white fish is about 96%. • Spawning Habitats of Fish in the Mekong and 3S Rivers in Cambodia in 2017 by IFReDI: 124 fish species.
  13. 13. Cirrhinus spp. 88% Pangasius sp.1 10% Pangasius sp.2 1% Pangasius 0% Paralaubuca typus 0% Barbonymus altus 0% Pangasianodon hypophthalmus 0% Pangasius bocourti 0% Clupeoides borneensis 0% Pangasius larnaudiei 0% Other 1% 37% 26% 11% 8% 2% 2% 2% 2% 1% 1% 8% Henicorhynchus cryptopogon Paralaubuca barroni Henicorhynchus siamensis Labiobarbus lineata Botia modesta Kryptopterus micronema Clupeichthys aesarnensis Labeo chrysophekadion Pangasius pleurotaenia Labiobarbus siamensis Other 107 speciesFish Larvae in 2017 Dai Fisheries in season 2016-2017
  14. 14. • This is critical to identify hotspots • Several recommendations already, but no funding of research so far Where are the breeding sites of migratory species
  15. 15. • Where are the hotspots and migration routes critical for the conservation of migratory fish species in Cambodia? • What should be the FiA recommendation at the national level (dams OK, dams that should be opposed)? • What should be the FiA position and recommendations at the regional level? Identification of hotspots and key routes
  16. 16. • What about the replacement of white fish by grey and black fish when obstacles interrupt migrations? • Will the replacement sustain the overall fish production? Replacement of migratory species
  17. 17. Research priorities 1) Update on migration routes (GIS analysis, existing information mainly desk work ≤ one month to study) 2) Updates on fish migration patterns (Local knowledge survey will take a few months) 3) Where are the breeding sites of migratory species(Local knowledge survey will take a few months) 4) Identification of hotspots and key routes ( combined results from, 1, 2 and 3, achievable result will take a year ) 5) Updates on migratory species (one by one which considers different cycle of different species, it will take more time from 1-3 years) 6) Replacement of migratory species (to be discussed with audiences)
  18. 18. Knowledge priorities 1) Where are the breeding sites of migratory species 2) Identification of hotspots and key routes 3) Replacement of migratory species
  19. 19. Summary • The most important data needs for migratory fish management and conservation in Cambodia: update on migration routes, fish migration patterns, migratory species, the breeding sites of migratory species, and hotspots and key routes and replacement of migratory species. • Prioritization base on two perspectives 1) logical order of research activities and 2) order of priority urgencies. • Identified research priorities base on the least demanding the fastest and the most demanding the longest time to achieve the results of 6 research activities. • Knowledge priorities are crucial information to inform the decision-makers, politicians to assess the impact of dam where it should not be build and can be built.
  20. 20. Thank you very much for your attention!

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