trend analysis of commercial fish production in mannar basin
TRANSCRIPT
Trends analysis of commercial Fish production in Mannar basin of Sri Lanka
Nalinda Ambagamuwa (128529)Department of Aquaculture & Fisheries
Faculty of Livestock Fisheries & NutritionWayamba University of Sri Lanka
Introduction• Mannar basin is rich with numerous types of Fish resources and other
commercially important resources
• Has both coastal and off-shore fishery
• Directly involved with the Fish industry in Sri Lanka
• Consists with seven major fishery districts
• Galle, Kaluthara, Colombo, Negombo,
Chillaw, Puttalam and Mannar
N
Rationale
• Lack of findings to determine the current fish production trends of the
Mannar basin
• There are no much research findings to make efficient policy decision
to conserve the fishery resources in Mannar basin
Major problems • Civil war disturbance ( Mainly in Mannar district)
• Natural disasters (Tsunami, storms, cyclones)
• Illegal fishing activities- Indian poaching
• Sand mining
• Coral mining
• Hydrocarbon exploration activities
Objectives
• To find out the basic trends of the fishery
• To describe the present situation of the fishery in the Mannar basin
• To identify the general matters in the selected fishing communities
• To evaluate the socio-economic situation of the selected fishery
districts
Methodology• Study area- Seven fishery districts in the Mannar basin
• Project period- 15 weeks
• Data collection
Fish production data Annual Marine production data (Year 1981-2015)
Commercial group-wise data (Year 2003-2015)
Fishing fleet data
Fisheries sector’s socio-economic data
N
Data were collected from;
Ministry of Fisheries and Aquatic Resource Development
Relevant district fisheries offices
The Department of Census & Statistics of Sri Lanka
National Aquatic Resources Research & development Agency (NARA
Year books)
Two basic test
• Sequential Mann Kendal test Main turning points in the fish production(1981-2015)
• Simple linear regression test Commercial Fish groups trends(2003-2015)
Marine annual fish production trends(1981-2015)
• SWOT analysis was conducted – with the aid of key informant persons
Analysis Method
Results
19811983
19851987
19891991
19931995
19971999
20012003
20052007
20092011
20132015
0
10000
20000
30000
40000
50000
60000
Annual marine fish production of fishery districts in the Mannar basin
Kaluthara Galle Colombo NegomboChilaw Puttalam Mannar
Year
Fish
Pro
ducti
on(M
t)
19811982198319841985198619871988198919901991199219931994199519961997199819992000200120022003200420052006200720082009201020112012201320142015
-5
-4
-3
-2
-1
0
1
2
3
4
Marine Fish Production Trend of the Mannar fishery district
u(ti) v(ti) Series3 Series4
Year
Uti &
Vti No any significant turning
point
19811983
19851987
19891991
19931995
19971999
20012003
20052007
20092011
20132015
-3
-2
-1
0
1
2
3
4
5
6
Marine Fish Production Trend of the Puttalam fishery district
u(ti) v(ti) Series3 Series4
Year
Uti &
Vti
19811983
19851987
19891991
19931995
19971999
20012003
20052007
20092011
20132015
0
5000
10000
15000
20000
25000
30000
35000
40000
Marine Sector Fish Catch of Chillaw District (Mt)
Chilaw
Year
Fish
Pro
ducti
on(M
t)
P-value 0.00P-value 0.00
19811983
19851987
19891991
19931995
19971999
20012003
20052007
20092011
20132015
-3
-2
-1
0
1
2
3
4
5
6
Marine Fish Production Trend of the Chillaw fishery district
u(ti) v(ti) Series3 Series4
Year
Uti &
Vti
19811982198319841985198619871988198919901991199219931994199519961997199819992000200120022003200420052006200720082009201020112012201320142015
-3
-2
-1
0
1
2
3
4
5
6Marine Fish Production Trend of the Negombo fishery district
u(ti) v(ti) Series3 Series4
Year
Uti &
Vti
19811982
19831984
19851986
19871988
19891990
19911992
19931994
19951996
19971998
19992000
20012002
20032004
20052006
20072008
20092010
20112012
20132014
2015-3
-2
-1
0
1
2
3
4
Marine Fish Production Trend of the Colombo fishery district
u(ti) v(ti) Series3 Series4
Year
Uti &
Vti
19811983
19851987
19891991
19931995
19971999
20012003
20052007
20092011
20132015
-3
-2
-1
0
1
2
3
4
5
6
7
Marine Fish Production Trend of the Kaluthara fishery district
u(ti) v(ti) Series3 Series4
Year
Uti &
Vti
19811983
19851987
19891991
19931995
19971999
20012003
20052007
20092011
20132015
-3
-2
-1
0
1
2
3
4
5
6
7Marine Fish Production Trend of the Galle fishery district
u(ti) v(ti) Series3 Series4
Year
Uti &
Vti
19811983
19851987
19891991
19931995
19971999
20012003
20052007
20092011
20132015
0
50000
100000
150000
200000
250000
Annual Fish production of the Mannar basin
Mannar basin Production
Year
Fish
Pro
ducti
on(M
t) Massive dropP-value 0.00
P-value 0.00
19811983
19851987
19891991
19931995
19971999
20012003
20052007
20092011
20132015
0
5000
10000
15000
20000
25000
Marine Sector Fish Catch of Mannar fishery district (Mt)
Mannar
No significant trend
19811983
19851987
19891991
19931995
19971999
20012003
20052007
20092011
20132015
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
50000
Marine Sector Fish Catch of Puttalam fishery district (Mt)
Puttalam
P-value – 0.00
P-value – 0.00
19811983
19851987
19891991
19931995
19971999
20012003
20052007
20092011
20132015
0
5000
10000
15000
20000
25000
30000
35000
40000
Marine Sector Fish Catch of Chillaw fishery district (Mt)
Chilaw
Year
Fish
Pro
ducti
on(M
t)
P-value – 0.00
P-value – 0.00
19811983
19851987
19891991
19931995
19971999
20012003
20052007
20092011
20132015
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
Marine annual production of Negombo fishery District (Mt)
Negombo
Year
Fish
Pro
ducti
on(M
t)
P-value – 0.00
19811983
19851987
19891991
19931995
19971999
20012003
20052007
20092011
20132015
0
1000
2000
3000
4000
5000
6000
7000
8000
Marine Sector Fish Catch of Colombo fishery district (Mt)
Colombo
P-value – 0.00
P-value – 0.014
19811983
19851987
19891991
19931995
19971999
20012003
20052007
20092011
20132015
0
10000
20000
30000
40000
50000
60000Marine Sector Fish production of Kaluthara fishery district (Mt)
Kaluthara
Year
Fish
Pro
ducti
on(M
t)
P-value – 0.014
P-value – 0.003
19811983
19851987
19891991
19931995
19971999
20012003
20052007
20092011
20132015
0
10000
20000
30000
40000
50000
60000
Marine Sector Fish Catch of Galle fishery district (Mt)
Galle
Year
Fish
Pro
ducti
on(M
t)
P-value – 0.00
P-value – 0.00
Districts annual production (Year 1981-2015)Percentage values of the annual production
Puttalam 19%
Mannar 8%Kaluthara
18%
Galle 16%
Colombo 2%Negombo
21%
Chillaw 16%
Significant trends of commercially important Fish groups
2003 2005 2007 2009 2011 2013 20150
2000400060008000
100001200014000
Large pelagic group of Mannar fishery district
Large Pelagic
Year
Fish
Pro
ducti
on(M
t)
2003 2005 2007 2009 2011 2013 20150
2000400060008000
1000012000
Small pelagic group of Mannar fishery district
Small Pelagic
Year
Fish
Pro
ducti
on(M
t) No significant trend
2003 2005 2007 2009 2011 2013 20150
1000
2000
3000
4000
5000
Dermasal group of Mannar fishery district
Dermasal
Year
Fish
Pro
ducti
on(M
t)
No significant trend
2003 2005 2007 2009 2011 2013 20150
500
1000
1500
2000
Prawn group of Mannar fishery district
Prawns
Year
Fish
Pro
ducti
on(M
t) P-value 0.006
P-value 0.017
2003 2005 2007 2009 2011 2013 20150
2000400060008000
100001200014000
Large pelagic group of Puttalam fishery district
Large Pelagic
Year
Fish
Pro
ducti
on(M
t)
2003 2005 2007 2009 2011 2013 20150
5000
10000
15000
20000
Small pelagic group of Puttalam fishery district
Small Pelagic
Year
Fish
Pro
ducti
on(M
t)
2003 2005 2007 2009 2011 2013 20150
1000200030004000500060007000
Dermasal Group of Puttalam district
Dermasal
Year
Fish
Pro
ducti
on(M
t) No significant trend
2003 2005 2007 2009 2011 2013 20150
1000
2000
3000
4000
5000
Prawn Group of Puttalam fishery district
Prawns
YearFi
sh P
rodu
ction
(Mt)
P-value 0.001No significant trend
P-value 0.001
2003 2005 2007 2009 2011 2013 20150
2000400060008000
1000012000
Large pelagic group of Chillaw fishery District
Large Pelagic
Year
Fish
Pro
ducti
on(M
t)
2003 2005 2007 2009 2011 2013 20150
5000
10000
15000
20000
Small pelagic group of Chillaw fishery district
Small Pelagic
Year
Fish
Pro
ducti
on(M
t) No significant trend
2003 2005 2007 2009 2011 2013 20150
1000200030004000500060007000
Dermasal group of Chillaw fishery district
Dermasal
Year
Fish
Pro
ducti
on(M
t)
P-value 0.00
2003 2005 2007 2009 2011 2013 20150
5001000150020002500300035004000
Prawn group of Chillaw fishery district
Prawns
YearFi
sh P
rodu
ction
(Mt) P-value 0.002
P-value 0.006
2003 2005 2007 2009 2011 2013 20150
5000
10000
15000
20000
25000
Large pelagic group of Negombo fishery district
Large Pelagic
Year
Fish
Pro
ducti
on(M
t)
No significant trend
2003 2005 2007 2009 2011 2013 20150
2000400060008000
100001200014000
Small pelagic group of Negombo fishery district
Small Pelagic
Year
Fish
Pro
ducti
on(M
t)
2003 2005 2007 2009 2011 2013 20150
1000200030004000500060007000
Dermasal group of Negombo fishery district
Dermasal
Year
Fish
Pro
ducti
on(M
t)
P-value 0.00
2003 2005 2007 2009 2011 2013 20150
1000
2000
3000
4000
5000
Prawn group of Negombo fishery district
Prawns
YearFi
sh P
rodu
ction
(Mt)
No significant trend
P-value 0.021
2003 2005 2007 2009 2011 2013 20150
1000
2000
3000
4000
5000
Large pelagic group of Colombo fishery district
Large Pelagic
Year
Fish
Pro
ducti
on(M
t) No significant trend
2003 2005 2007 2009 2011 2013 20150
500
1000
1500
2000
Small pelagic group of Colombo fishery district
Small Pelagic
Year
Fish
Pro
ducti
on(M
t) No significant trend
2003 2005 2007 2009 2011 2013 20150
500
1000
1500
2000
Dermasal group of Colombo fishery district
Dermasal
Year
Fish
Pro
ducti
on(M
t)
No significant trend
2003 2005 2007 2009 2011 2013 20150
50100150200250300350400
Prawn group of Colombo fishery district
Prawns
YearFi
sh P
rodu
ction
(Mt) No significant trend
2003 2005 2007 2009 2011 2013 20150
500010000150002000025000300003500040000
Large pelagic group of Kaluthara fishery district
Large Pelagic
Year
Fish
Pro
ducti
on(M
t)
No significant trend
2003 2005 2007 2009 2011 2013 20150
2000400060008000
100001200014000
Small pelagic group of Kaluthara fishery district
Small Pelagic
Year
Fish
Pro
ducti
on(M
t)
No significant trend
2003 2005 2007 2009 2011 2013 20150
1000
2000
3000
4000
5000
Dermasal group of Kaluthara fishery district
Dermasal
Year
Fish
Pro
ducti
on(M
t) No significant trend
2003 2005 2007 2009 2011 2013 20150
100200300400500600700800
Prawn group of Kaluthara fishery District
Prawns
YearFi
sh P
rodu
ction
(Mt)
No significant trend
2003 2005 2007 2009 2011 2013 20150
5000
10000
15000
20000
25000
30000
Large pelagic group of Galle fishery district
Large Pelagic
Year
Fish
Pro
ducti
on(M
t) P-value 0.018
2003 2005 2007 2009 2011 2013 20150
5000
10000
15000
20000
25000
Small pelagic group of Galle fishery district
Small Pelagic
Year
Fish
Pro
ducti
on(M
t)
No significant trend
2003 2005 2007 2009 2011 2013 20150
1000
2000
3000
4000
5000
6000
Dermasal group of Galle fishery district
Dermasal
Year
Fish
Pro
ducti
on(M
t) No significant trend
2003 2005 2007 2009 2011 2013 20150
50100150200250300
Prawn group of Galle fishery district
Prawns
YearFi
sh P
rodu
ction
(Mt)
No significant trend
Active Fishers by districts
1989 1996 1999 2004 2008 2011 2012 2013 2014 20150
2000
4000
6000
8000
10000
12000
14000
16000
18000
20000
Colombo Negombo Chilaw Puttalam Mannar Galle Kaluthara
Year
Num
ber o
f Fis
herm
en
Major fishing crafts
IMUL IDAY NTRB
OFRP MTRB
SWOT analysis resultsStrengths
Contributes significantly to the Fish production
Well facilitated harbors in districts of Mannar basin
Availability of valuable Fish resourcesGovernment hand to increase
Multiday boats in fishing after the tsunami devastation
Weaknesses
Developed industries are provisioned in western province
By catch issues and black Fish landingsHighest post harvest lossesPoor enforcement of rules &
regulations Lack of infrastructure for large scale
fishing
Opportunities
Vast tuna fishery potential, as there is
a potential for large pelagic fishes
Fish based eco-tourism
Tax relieve for fishery exports
Threats
Oil spills and waste disposal
Illegal fishing
Destructive fishing methods & over
exploitation
Coral & sand mining
Climate changes
Discussion• Study reveals the main trends for the marine annual production since
1981 to 2015 and trends of commercial fish groups since 2003 to 2015• After the tsunami devastation, trend of the annual production of
Mannar basin is taking a positive state until the year 2015• Mannar basin is highly rich and diverse with natural resources• Negombo and Kaluthara fishery districts are the high productive
districts• Natural disasters are directly impact on the production of the Mannar
basin
Conclusion• Negombo fishery district is the highest contributor to the Fish production
of the Mannar basin among all the other districts.
• Colombo fishery district is the least contributor to the Fish production of
the Mannar basin
• Except for Mannar district, all the other districts were showed significant
upward trends for the marine annual production
• Except for Kaluthara and Colombo fishery districts, all other fishery
districts showed positive trends for certain commercial Fish groups
Suggestions• Implemented rules and regulation have to be inspect regularly
• Off fishing seasons has to be announced if possible
• Government has to aware the fishermen about current situations of the fishery
References• MOFAR 2014, Fisheries Statistics, Ministry of Fishery and Aquatic
Resource• Jayasinghe, J. M. P. K. (2014). Exploratory drilling for hydrocarbon
resources in the Cauvery basin : Potential impacts on artisanal fishery and fishing grounds of Sri Lanka. Journal of the Marine Biological Association of India, 56, 1–5.
Acknowledgement• Prof.J.M.P.K.Jayasinghe, Senior professor, Department of Aquaculture
and Fisheries, Wayamba University of Sri Lanka
• Ms.Ursla peiris, lecturer, Biostatistics, Wayamba University of Sri Lanka
• Assistant director of district fisheries office in Mannar district
• President of fishery community in the Mannar district • For my family & friends
DistrictCommercial
group Trend type Trend Duration HPV(Mt) HPV Year LPV(Mt) LPV Year
Puttalam Large Pelagic Upward trend 2005 to 2014 12340 2014 3480 2003
Small Pelagic No trend ****** 18200 2015 4130 2006
Dermasal No trend ****** 6180 2015 780 2005
Prawns No trend ****** 4130 2013 780 2008
Chillaw Large Pelagic Upward trend 2005 to 2013 11020 2013 3610 2005
Small Pelagic No trend ****** 16520 2013 3560 2005
Dermasal Upward trend 2005 to 2013 6220 2013 1690 2005
Prawns Upward trend 2003 to 2009 3370 2013260 & 270
2003 & 2005
Negombo Large Pelagic Upward trend 2003 to 2008 20320 2007 10220 2005
Small Pelagic Upward trend 2003 to 2009 12850 2015 3070 2005
Dermasal Upward trend 2003 to 2011 5880 2014 1830 2005
Prawns No trend ****** 4520 2013 1360 2005
District Commercial group Trend type Trend Duration HPV(Mt) HPV Year LPV(Mt) LPV Year
Colombo Large Pelagic No trend ****** 4830 2014 90 2007
Small Pelagic No trend ****** 1780 2011 80 2005
Dermasal No trend ****** 1750 2015 130 2007
Prawns No trend ****** 380 2015 10 2004
Mannar Large Pelagic Upward trend 2008 to 2014 11440 2014 1430 2004
Small Pelagic No trend ****** 9980 2004 710 2009
Dermasal No trend ****** 4630 2014 1630 2007
Prawns Upward trend 2008 to 2014 1740 2014 170 2008
District Commercial group Trend type Trend Duration HPV(Mt) HPV Year LPV(Mt) LPV Year
Galle Large Pelagic Upward & down ward 2003 to 2008/ 2008 to
2014 28420 2014 6100 2008
Small Pelagic Upward trend 2003 to 2008 22710 2015 1610 2003
Dermasal No trend ****** 5480 2015 390 2008
Prawns No trend ****** 240 2014 202006 &
2008
Kaluthara Large Pelagic No trend ****** 34020 2011 9480 2005
Small Pelagic No trend ****** 13120 2011 10 2014
Dermasal No trend ****** 4620 2013 3010 2004
Prawns No trend ****** 690 2014 10 2003&2004
Main fishing crafts
• IMUL - Inboard Multi-day Boats, IDAY - Inboard Single-day Boats,
• OFRP - Out-board engine FiberglassReinforced Plastic Boats,
• MTRB - Motorized Traditional Boats,
• NTRB - Non-motorized Traditional Boats
Puttalam10% Chillaw
9%
Negombo22%Colombo
1%Mannar
6%Galle20%
Kaluthara33%
Large Pelagic Production(Year 2003-2015)
Puttalam20%
Chillaw24%
Negombo20%
Colombo1%
Mannar8%
Galle15%
Kaluthara12%
Small Pelagic production(2003-2015)
Puttalam17%
Chillaw21%
Negombo18%
Colombo3%
Mannar16%
Galle11%
Kaluthara14%
Dermasal group production(2003-2015)
Puttalam29%
Chillaw21%
Negombo37%
Colombo1%
Mannar8%
Galle1%Kaluthara
2%
Prawns group production(2003-2015)
Commercial group’s production as a percentage
Puttalam10%
Chillaw9%
Negombo22%
Colombo1%
Mannar6%
Galle20%
Kaluthara33%
Large Pelagic Production(Year 2003-2015)