Embed Size (px)
Citation preview
FLOOD CONTROL IMPACTS ON FLOOD CONTROL IMPACTS ON FISHERIES:FISHERIES:
GUIDELINES FOR MITIGATIONGUIDELINES FOR MITIGATION
UK Department for International Development (DFID)UK Department for International Development (DFID)Fisheries Management Science Programme (FMSP)Fisheries Management Science Programme (FMSP)
June 2005 June 2005
A. S. Halls, A. S. Halls, Aquae Sulis Ltd (ASL), UKAquae Sulis Ltd (ASL), UK
BackgroundBackgroundThis presentation is one of a series of five presenting key This presentation is one of a series of five presenting key outputs froutputs from FMSP floodplain projects, carried out in the Asian om FMSP floodplain projects, carried out in the Asian region between 1992 and 2005. The five papers focus on:region between 1992 and 2005. The five papers focus on:
– General management guidelines for floodplain river fisheries General management guidelines for floodplain river fisheries (as published in FAO Fisheries Technical Paper 384/1)(as published in FAO Fisheries Technical Paper 384/1)
– Selection and management of harvest reserves (key Selection and management of harvest reserves (key messages)messages)
– Materials for a training course on harvest reservesMaterials for a training course on harvest reserves– Flood Control Impacts on Fisheries: Guidelines for MitigationFlood Control Impacts on Fisheries: Guidelines for Mitigation – Modelling floodplain river fisheriesModelling floodplain river fisheries
This presentation was prepared by FMSP Project R8486 – This presentation was prepared by FMSP Project R8486 – ‘‘Promotion of FMSP guidelines for floodplain fisheries Promotion of FMSP guidelines for floodplain fisheries management and sluice gate control’management and sluice gate control’
IntroductionIntroduction
• Flood Control Drainage and Flood Control Drainage and Irrigation (FCDI) structures exist Irrigation (FCDI) structures exist widely in Bangladesh and other widely in Bangladesh and other parts of Asia.parts of Asia.
• Built to control water levels to Built to control water levels to improve agricultural production improve agricultural production based upon HYV of rice (cannot based upon HYV of rice (cannot tolerate rapid inundation or tolerate rapid inundation or require irrigation).require irrigation).
• Provide protection from extreme Provide protection from extreme flood events.flood events.
IntroductionIntroduction• Benefits to agricultural sector Benefits to agricultural sector
significant (80% more production significant (80% more production inside) but…inside) but…
• Fish production typically lowered.Fish production typically lowered.
• Halls et al (1998;1999) found Halls et al (1998;1999) found that in Bangladesh fish yields that in Bangladesh fish yields were 50% lower yields inside were 50% lower yields inside FCDIs compared to outside FCDIs compared to outside with with up to 25 species of fish absent or up to 25 species of fish absent or less abundant. less abundant.
• Lower rates of recruitment of Lower rates of recruitment of migratory migratory whitefishwhitefish species species found largely responsible found largely responsible (Hoggarth et al 1999).(Hoggarth et al 1999).
• Migrations obstructed by Migrations obstructed by embankments.embankments.
IntroductionIntroduction
• Predicted effects of Predicted effects of climate change in climate change in South Asia include: South Asia include: – more extreme floodingmore extreme flooding
– hotter and more arid dry hotter and more arid dry season conditionsseason conditions
• May necessitate the May necessitate the construction of construction of moremore FCDI schemes! (to FCDI schemes! (to control floods and control floods and provide dry season provide dry season irrigation)?irrigation)?
IntroductionIntroduction
• Q: How can we mitigate the impacts of FCDI Q: How can we mitigate the impacts of FCDI Schemes?Schemes?
• A:A: Improve the management of sluice gates to: Improve the management of sluice gates to:
– (1.) Improve the recruitment (access) of (1.) Improve the recruitment (access) of migratory fish to FCDIs.migratory fish to FCDIs.
– (2.) Improve production of resident (non-(2.) Improve production of resident (non-migratory) fish populations.migratory) fish populations.
Whilst Whilst minimising impacts to agricultureminimising impacts to agriculture sector sector
(Integrated floodplain management - IFM)(Integrated floodplain management - IFM)
1. Improving fish access to 1. Improving fish access to FCDIsFCDIs• Based on fisheries Based on fisheries
monitoring and mark-monitoring and mark-recapture studies recapture studies undertaken at 3 sluice undertaken at 3 sluice gates (Halls 2005a; gates (Halls 2005a; Halls et al 1998; Halls Halls et al 1998; Halls et al 1999; Hoggarth et et al 1999; Hoggarth et al 1999), the following al 1999), the following guidelines have been guidelines have been developed to developed to improve improve the accessthe access of migratory of migratory fish to FCDIs…fish to FCDIs…
1. Improving fish access to 1. Improving fish access to FCDIsFCDIs
• 1.1 Sluice gate 1.1 Sluice gate managers should managers should aim to aim to maximisemaximise the the flowflow of water (and of water (and therefore fish) therefore fish) intointo FCDI during the FCDI during the rising floodrising flood period. period.
• Aids the passive Aids the passive inward migrations of inward migrations of fish.fish.
0 10 20 30
Gate Aperture (m 2)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
6 7 8 9 10Inside water height (m)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
6 7 8 9 10 11Outside water height (m)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
-1 0 1 2 3Head of water (m)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
-0.1 0.0 0.1 0.2 0.3 0.4
Outside water velocity (ms -1)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
-0.1 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
Inside water velocity (ms -1)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
-0.3 -0.2 -0.1 0.0 0.1
Velocity difference (ms -1)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
0.0 0.2 0.4 0.6 0.8 1.0 1.2Inside Secchi depth (m)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0Outside Secchi depth (m)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
2000 3000 4000 5000 6000 7000
Inside water pressure (kgm -2)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
2000 3000 4000 5000 6000 7000 8000
Outside water pressure (kgm -2)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
-1000 0 1000 2000 3000
Pressure difference (kgm -2)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
Inside Turbulence (Reynolds No.)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
0 1000000 2000000 3000000Outside Turbulence (Reynolds No.)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
-200 -100 0 100 200
Inside flow rate (m 3s-1)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
1 2 3 4 5 6 7
Gate Aperture (m 2)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
7 8 9 10Inside water height (m)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
9.0 9.5 10.0 10.5 11.0Outside water height (m)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
0 1 2 3Head of water (m)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
0.08 0.09 0.10 0.11 0.12 0.13
Outside water velocity (ms -1)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
0.15 0.16 0.17 0.18 0.19 0.20 0.21
Inside water velocity (ms -1)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
-0.085 -0.080 -0.075 -0.070
Velocity difference (ms -1)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
0.2 0.3 0.4 0.5Inside Secchi depth (m)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
0.1 0.2 0.3 0.4Outside Secchi depth (m)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
2000 3000 4000 5000 6000 7000
Inside water pressure (kgm -2)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
4000 5000 6000 7000
Outside water pressure (kgm -2)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
0 1000 2000 3000
Pressure Difference (kgm -2)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
1000000
2000000
3000000
4000000
5000000
6000000
Inside Turbulence (Reynolds No.)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
1200000
1300000
1400000
1500000
1600000
1700000
1800000
1900000
2000000
2100000
Outside Turbulence (Reynolds No.)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
1 2 3 4 5 6 7 8
Inside flow rate (m 3s-1)
0
20
40
60
80
100
120
Pa s
s age
su c
c ess
( %)
1. Improving fish access to FCDIs1. Improving fish access to FCDIs
• 1.2 Sluice gate managers 1.2 Sluice gate managers should aim to open sluice should aim to open sluice gates as gates as frequentlyfrequently as as possible and attempt to possible and attempt to minimiseminimise the the turbulenceturbulence of of water water outsideoutside sluice gates sluice gates during the during the risingrising flood flood period.period.
• Anecdotal evidence (Halls et al Anecdotal evidence (Halls et al 1998;1999; Hoggarth et al 1998;1999; Hoggarth et al 1999) suggests that 1999) suggests that biodiversity & fish production biodiversity & fish production benefit from more frequent benefit from more frequent gate openings, particularly gate openings, particularly during during risingrising flood period. flood period.
• Turbulence in front of gate may Turbulence in front of gate may act as an obstacle to induction act as an obstacle to induction and smooth passage of fish.and smooth passage of fish.
5 6 7 8
Gate aperture (m 2)
30
40
50
60
70
80
90
100
Pa s
s age
suc
c es s
(%)
9.5 10.0 10.5 11.0 11.5Inside water height (m)
30
40
50
60
70
80
90
100
Pa s
s age
suc
c es s
(%)
10 11 12 13Outside water height (m)
30
40
50
60
70
80
90
100
Pa s
s age
suc
c es s
(%)
0.0 0.5 1.0 1.5 2.0Head of water (m)
30
40
50
60
70
80
90
100
Pa s
s age
suc
c es s
(%)
0.1 0.2 0.3 0.4 0.5
Outside water velocity (ms -1)
30
40
50
60
70
80
90
100
Pa s
s age
suc
c es s
(%)
0.25 0.30 0.35 0.40 0.45
Inside water velocity (ms -1)
30
40
50
60
70
80
90
100
Pa s
s age
suc
c es s
(%)
-0.2 -0.1 0.0 0.1 0.2
Velocity difference (ms -1)
30
40
50
60
70
80
90
100
Pa s
s age
suc
c es s
(%)
0.05 0.10 0.15 0.20Inside Secchi depth (m)
30
40
50
60
70
80
90
100
Pa s
s age
suc
c es s
(%)
0.07 0.08 0.09 0.10Outside Secchi depth (m)
30
40
50
60
70
80
90
100
Pa s
s age
suc
c es s
(%)
0 1000 2000 3000
Inside water pressure (kgm -2)
30
40
50
60
70
80
90
100
Pa s
s age
suc
c es s
(%)
0 1000 2000 3000 4000
Outside water pressure (kgm -2)
30
40
50
60
70
80
90
100
Pa s
s age
suc
c es s
(%)
-2000 -1000 0 1000 2000
Pressure difference (kgm -2)
30
40
50
60
70
80
90
100
Pa s
s age
suc
c es s
(%)
Inside turbulence (Reynolds No.)
30
40
50
60
70
80
90
100
Pa s
s age
suc
c es s
(%)
500000 1000000 1500000 2000000Outside turbulence (Reynolds No.)
30
40
50
60
70
80
90
100
Pa s
s age
suc
c es s
(%)
0 5 10 15 20
Inside flow rate (m 3s-1)
30
40
50
60
70
80
90
100
Pa s
s age
suc
c es s
(%)
1. Improving fish access to FCDIs1. Improving fish access to FCDIs
• 1.3 Sluice gate 1.3 Sluice gate managers could managers could control control ebbebb flows from flows from sluice gates to sluice gates to attractattract more fish towards more fish towards sluice gates but that sluice gates but that do do not exceednot exceed the the maximum swimming maximum swimming speeds of fish.speeds of fish.
• The figure opposite The figure opposite shows how the shows how the abundance of fish caught abundance of fish caught trying to migrate towards trying to migrate towards the Talimnagar sluice the Talimnagar sluice gate in NW Bangladesh gate in NW Bangladesh varies in response to out-varies in response to out-flowing current velocity. flowing current velocity.
• It suggests that best It suggests that best attraction velocity is attraction velocity is about 0.1msabout 0.1ms-1-1. .
Optimal Attraction velocity
Average MaxSwimming Speed
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
0 0.1 0.2 0.3
Current Velocity (ms-1)
CP
UE
(k
gm
-2h
-1)
x1
00
0
Calculating maximum current speedsCalculating maximum current speeds
• Maximum swimming speeds of fish, thus maximum Maximum swimming speeds of fish, thus maximum permissible ebb current speeds flowing out from sluice permissible ebb current speeds flowing out from sluice gates (Max Outflow Velocity), can be easily estimated using gates (Max Outflow Velocity), can be easily estimated using the current empirical formulae (Rthe current empirical formulae (R22=0.80):=0.80):
• Where UWhere Umsms=maximum sustainable swimming speed, L = =maximum sustainable swimming speed, L = mean length of migrating fish, W=mean weight of mean length of migrating fish, W=mean weight of migrating fish, n=constant=3.migrating fish, n=constant=3.
• Liftnet sampling of fish during ebb flow will give estimates Liftnet sampling of fish during ebb flow will give estimates of L and W. Liftnets could also be sampled for CPUE data to of L and W. Liftnets could also be sampled for CPUE data to estimate optimal attraction velocities.estimate optimal attraction velocities.
100
))(1.1(( 14.0
WnL
UVelocityOutflowMax ms
1. Improving fish 1. Improving fish access to access to FCDIsFCDIs
• 1.4 Managers should 1.4 Managers should control fishing control fishing activities along activities along channels channels connecting connecting the sluice gates to the sluice gates to the main rivers. the main rivers.
• In Badia River biomass In Badia River biomass of immigrating fish was of immigrating fish was reduced by 40-50 % reduced by 40-50 % along 5km stretch from along 5km stretch from mouth to gate (Halls mouth to gate (Halls 2005).2005).
July 2004
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0 1 2 3 4 5 6
Distance from mouth of river (km)
Mea
n C
PU
E x
100
(kg
day
-1 m
2)
1. Improving fish access to 1. Improving fish access to FCDIsFCDIs• Controlling fishing in these Controlling fishing in these
channels may be as important as channels may be as important as fine tuning sluice gate operations.fine tuning sluice gate operations.
• First step in right direction - First step in right direction - avoids any potential impacts to avoids any potential impacts to farmers arising from sluice gate farmers arising from sluice gate operations.operations.
• Should benefit the wider fishery Should benefit the wider fishery (fishing during this period exploits (fishing during this period exploits sexually immature fish that are sexually immature fish that are still growing rapidly).still growing rapidly).
• Reducing effort during this period Reducing effort during this period could increase size of spawning could increase size of spawning stocks and thus overall yield, as stocks and thus overall yield, as well as yield-per-recruit. well as yield-per-recruit.
2. Improving Production of Resident 2. Improving Production of Resident FishFish
• 2.12.1 Sluice gate managers Sluice gate managers should consider should consider closingclosing sluice sluice gates gates towards end of ebb floodtowards end of ebb flood to to retainretain more more waterwater within FCDI within FCDI schemes during the schemes during the dry seasondry season..
• Fish over-winter in permanent Fish over-winter in permanent channels and residual waterbodies channels and residual waterbodies on floodplain. Area of water on floodplain. Area of water remaining on the floodplain may be remaining on the floodplain may be less than 5% of that during the flood less than 5% of that during the flood season!season!
• Model predictions indicate that fish Model predictions indicate that fish production is more sensitive to the production is more sensitive to the amount of water remaining during amount of water remaining during dry season than flood season dry season than flood season conditions conditions (see accompanying (see accompanying floodplain modeling presentation).floodplain modeling presentation).
• Studies (Halls et al 2001; Shanker et al 2004; Studies (Halls et al 2001; Shanker et al 2004; 2005) at the PIRDP have predicted that raising 2005) at the PIRDP have predicted that raising dry season water levels by as little as 0.25m, dry season water levels by as little as 0.25m, could increase fish production by about 9% at a could increase fish production by about 9% at a loss of only 8 ha of rice production, mainly from loss of only 8 ha of rice production, mainly from marginal, low-lying land. marginal, low-lying land.
• Increased availability of dry season water would Increased availability of dry season water would help reduce pressure placed upon critical dry help reduce pressure placed upon critical dry season fish habitat resulting from dry season crop season fish habitat resulting from dry season crop irrigation strategies. irrigation strategies.
• Such irrigation strategies are likely to become Such irrigation strategies are likely to become increasingly necessary in the face of climate increasingly necessary in the face of climate change change (Halls 2005b).(Halls 2005b).
2. Improving Production of Resident 2. Improving Production of Resident FishFish
2. Improving Production of Resident Fish2. Improving Production of Resident Fish
• 2.2 Managers should seek to 2.2 Managers should seek to encourage encourage alternative cropping alternative cropping strategiesstrategies and the and the retirement retirement of marginal low-lyingof marginal low-lying agricultural agricultural land land that is that is prone prone to early floodto early flood risk. risk.
• Dry season (boro) rice production Dry season (boro) rice production based upon high yielding varieties based upon high yielding varieties (HYV) often relies upon small-scale (HYV) often relies upon small-scale irrigation systems e.g. low lift (taxi) irrigation systems e.g. low lift (taxi) pumps (LLPs) to abstract water pumps (LLPs) to abstract water from dry season waterbodies. from dry season waterbodies.
• But these residual water bodies But these residual water bodies provide provide criticalcritical dry season habitat dry season habitat for floodplain-resident fish. for floodplain-resident fish.
2. Improving Production of Resident 2. Improving Production of Resident FishFish
• Studies (Shanker et al Studies (Shanker et al 2004; 2005) have 2004; 2005) have predicted that beyond predicted that beyond some threshold, floodplain some threshold, floodplain fish production is highly fish production is highly sensitive to removals of sensitive to removals of water from these bodies water from these bodies impacting upon fish impacting upon fish catchability, natural catchability, natural mortality rates and mortality rates and recruitment.recruitment.
• Switching to alternative Switching to alternative dry season crops such as dry season crops such as wheat or onions that wheat or onions that require less irrigation (less require less irrigation (less frequent and smaller frequent and smaller applications of water) applications of water) could alleviate this could alleviate this problem to some extent.problem to some extent.
0 500 1000 1500Area Irrigated (ha)
0
50
100
150
CP
UA
(k g
ha
-1)
0 500 1000 1500Area Irrigated (ha)
0
50
100
150
CP
UA
(k g
ha
-1)
0 500 1000 1500Area Irrigated (ha)
0
50
100
150
CP
UA
(k g
ha
-1)
0 1000 2000 3000 4000 5000Area Irrigated (ha)
0
50
100
150
CP
UA
(k g
ha
-1)
0 1000 2000 3000 4000 5000Area Irrigated (ha)
0
50
100
150
CP
UA
(k g
ha
-1)
WheatOnions
Low
Boro rice Irrigation Schedules
MediumHigh
2. Improving Production of Resident 2. Improving Production of Resident FishFish• Switching to other dry season Switching to other dry season
crops such as spices and crops such as spices and vegetables that are harvested vegetables that are harvested several weeks before several weeks before boroboro rice, and greater emphasis on rice, and greater emphasis on more flood-tolerant more flood-tolerant AmanAman rice rice would also allow for earlier, would also allow for earlier, more frequent opening of more frequent opening of sluice gates for longer periods sluice gates for longer periods during the rising flood during the rising flood (Shanker et al 2004;2005)(Shanker et al 2004;2005). .
• Such adaptive strategies are Such adaptive strategies are likely to become increasingly likely to become increasingly necessary in South Asia where necessary in South Asia where precipitation is predicted to precipitation is predicted to increase during the flood increase during the flood season, but decrease during season, but decrease during the dry season in response to the dry season in response to climate change (Halls 2005b). climate change (Halls 2005b).
ReferencesReferencesHalls, A. S. (2005a). The Use of Sluice Gates for Stock Enhancement and Diversification of Halls, A. S. (2005a). The Use of Sluice Gates for Stock Enhancement and Diversification of
Livelihoods (R8210). Fisheries Assessment Report. London, MRAG, 75pp. Livelihoods (R8210). Fisheries Assessment Report. London, MRAG, 75pp. http://www.fmsp.org.uk/FTRs/r8210/.htmhttp://www.fmsp.org.uk/FTRs/r8210/.htm
Halls, A.S. (2005b). Promoting New Knowledge of Climate Change Impacts on Fisheries Halls, A.S. (2005b). Promoting New Knowledge of Climate Change Impacts on Fisheries (R8457): A Review of Impacts and Interactions in the Context of Other Renewable (R8457): A Review of Impacts and Interactions in the Context of Other Renewable Natural Resource Sectors. Natural Resource Sectors. ASLASL, April, 2005, 46pp., April, 2005, 46pp.
Halls, A.S., Kirkwood, G.P. and Payne, A.I. (2001). A dynamic pool model for floodplain-Halls, A.S., Kirkwood, G.P. and Payne, A.I. (2001). A dynamic pool model for floodplain-river fisheries. river fisheries. Ecohydrology and HydrobiologyEcohydrology and Hydrobiology, , 1 1 (3): 323-339. (3): 323-339. http://http://www.ecohydro.pl/index.phpwww.ecohydro.pl/index.php
Halls, A.S., Hoggarth, D.D. & Debnath, D. (1999). Impacts of hydraulic Halls, A.S., Hoggarth, D.D. & Debnath, D. (1999). Impacts of hydraulic engineering on the dynamics and production potential of floodplain fish engineering on the dynamics and production potential of floodplain fish populations in Bangladesh. populations in Bangladesh. Fisheries Management and Ecology Fisheries Management and Ecology 66: 261-285: 261-285. . http://www.blackwell-synergy.com/loi/fme?openhttp://www.blackwell-synergy.com/loi/fme?open=1999=1999
Halls, A.S., Hoggarth, D.D. & Debnath, D. (1998) Impact of flood control schemes on river Halls, A.S., Hoggarth, D.D. & Debnath, D. (1998) Impact of flood control schemes on river fish migrations and species assemblages in Bangladesh. fish migrations and species assemblages in Bangladesh. Journal of Fish BiologyJournal of Fish Biology 5353 (Suppl. A), 358-380. (Suppl. A), 358-380. http://www.blackwell-synergy.com/toc/jfb/53/sahttp://www.blackwell-synergy.com/toc/jfb/53/sa
Hoggarth, D.D., Halls, A.S., Dam, R. K. & Debnath, K. (1999) Recruitment Sources Hoggarth, D.D., Halls, A.S., Dam, R. K. & Debnath, K. (1999) Recruitment Sources for fish stocks inside a floodplain river impoundment in Bangladesh. for fish stocks inside a floodplain river impoundment in Bangladesh. Fisheries Fisheries Management and EcologyManagement and Ecology 6: 287-310. 6: 287-310. http://www.blackwell-synergy.com/loi/fme?openhttp://www.blackwell-synergy.com/loi/fme?open=1999=1999
Shankar, B., Halls, A.S., & Barr, J. (2005). The effects of surface water abstraction for rice Shankar, B., Halls, A.S., & Barr, J. (2005). The effects of surface water abstraction for rice irrigation on floodplain fish production in Bangladesh.irrigation on floodplain fish production in Bangladesh. Int. J. Water, Vol. Int. J. Water, Vol. 33, No. 1, 2005., No. 1, 2005.
Shankar, B., Halls, A.S., & Barr, J. (2004). Rice versus fish revisited: on the integrated Shankar, B., Halls, A.S., & Barr, J. (2004). Rice versus fish revisited: on the integrated management of floodplain resources in Bangladesh.management of floodplain resources in Bangladesh. Natural Resources ForumNatural Resources Forum, , 2828: 91-: 91-101. 101. http://www.blackwell-synergy.com/toc/narf/28/2http://www.blackwell-synergy.com/toc/narf/28/2..
Project details and Project details and creditscredits
FMSP Project R8210 – FMSP Project R8210 – The Use of Sluice Gates for The Use of Sluice Gates for Stock Enhancement and Diversification of Stock Enhancement and Diversification of LivelihoodsLivelihoods
• Start Date: Start Date: 03/2003 03/2003
• End Date: End Date: 02/200502/2005
• Project Collaborators: Project Collaborators: – MRAG (Ashley Halls, Ian Payne) MRAG (Ashley Halls, Ian Payne) – IIED (Hannah Reid, Saleemul Huq); IIED (Hannah Reid, Saleemul Huq); – BCAS (Atiq Rahman, BCAS (Atiq Rahman, Liaquat Ali, Sarder Shafiqul Alam,
Shyamal Kanti Barman, and Monirul Islam).
• Key References: Halls (2005).Key References: Halls (2005).
• Project web page: Project web page: http://http://www.fmsp.org.ukwww.fmsp.org.uk/FTRs/r8210//FTRs/r8210/.htm.htm
FMSP Project R5953 – FMSP Project R5953 – Fisheries dynamics of Fisheries dynamics of modified floodplains in southern Asiamodified floodplains in southern Asia
• Start Date: Start Date: 03/1994 03/1994
• End Date: End Date: 03/199703/1997
• Project Collaborators: Project Collaborators: – MRAG (Dan Hoggarth, Ashley Halls); MRAG (Dan Hoggarth, Ashley Halls); – CRIFI, Indonesia (Fuad Cholik, Agus Utomo, Ondara); CRIFI, Indonesia (Fuad Cholik, Agus Utomo, Ondara); – BAU Mymensingh (M.A. Wahab, Kanailal Debnath, BAU Mymensingh (M.A. Wahab, Kanailal Debnath,
Ranjan Kumar Dam)Ranjan Kumar Dam)
• Key References: MRAG (1997); Halls et al (1998); Hoggarth Key References: MRAG (1997); Halls et al (1998); Hoggarth et al (1999); Hoggarth et al (1999b). et al (1999); Hoggarth et al (1999b).
• Project web page: Project web page: http://http://www.fmsp.org.ukwww.fmsp.org.uk/FTRs/r5953//FTRs/r5953/.htm.htm
This presentation is an output from a project funded by the UK Department This presentation is an output from a project funded by the UK Department for International Development (DFID) for the benefit of developing for International Development (DFID) for the benefit of developing
countries. The views expressed are not necessarily those of the DFID.countries. The views expressed are not necessarily those of the DFID.
This project was funded through DFID's Fisheries Management Science This project was funded through DFID's Fisheries Management Science Programme (FMSP). For more information on the FMSP and other projects Programme (FMSP). For more information on the FMSP and other projects
funded through the Programme visit funded through the Programme visit http://http://www.fmsp.org.ukwww.fmsp.org.uk
![FP 7 EU PROJECT THEME [KBBE.2011.2.5-02] [Reducing post ... · Role of fisheries and overall objective • A sustainable fisheries sector is essential for food security, hunger mitigation](https://img.pdfslide.us/doc/110x75/5c098cc009d3f29a3a8b948c/fp-7-eu-project-theme-kbbe201125-02-reducing-post-role-of-fisheries.jpg)
