Fisheries and Fishing Techniques. What are fisheries? A fishing ground for commercial fishing.
The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities...
-
Upload
jeremiah-barrett -
Category
Documents
-
view
213 -
download
1
Transcript of The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities...
![Page 1: The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities Nick Hill 1,2 EJ Milner-Gulland 1, Marcus Rowcliffe.](https://reader036.fdocuments.in/reader036/viewer/2022070305/5514d5ef550346b0338b5328/html5/thumbnails/1.jpg)
The spatio-temporal dynamics of fishing behaviour and its determinants in poor
fishing communities
Nick Hill1,2
EJ Milner-Gulland1, Marcus Rowcliffe2, Guy Cowlishaw2
1Imperial College London. 2Institute of Zoology, Zoological Society of London
![Page 2: The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities Nick Hill 1,2 EJ Milner-Gulland 1, Marcus Rowcliffe.](https://reader036.fdocuments.in/reader036/viewer/2022070305/5514d5ef550346b0338b5328/html5/thumbnails/2.jpg)
Outline
• East Africa and small-scale fisheries
• Introduction to study site
• Livelihoods
• Effects on fishing behaviour
![Page 3: The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities Nick Hill 1,2 EJ Milner-Gulland 1, Marcus Rowcliffe.](https://reader036.fdocuments.in/reader036/viewer/2022070305/5514d5ef550346b0338b5328/html5/thumbnails/3.jpg)
East Africa
• East Africa coastal population ≈ 22 million
– 5-6% increase per annum
• Dependence on marine resources.
• Degradation: serious concern for livelihoods
• Failure to reduce
degradation and
poverty
– Why?
![Page 4: The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities Nick Hill 1,2 EJ Milner-Gulland 1, Marcus Rowcliffe.](https://reader036.fdocuments.in/reader036/viewer/2022070305/5514d5ef550346b0338b5328/html5/thumbnails/4.jpg)
Failure of fisheries management
• Why the failure?
• Behaviour poorly understood.
• Data aggregated spatially
• Data aggregated across fleet
• Consequence:
• Unable to predict response to management
• Policies and management unsuitable
• What is needed?
• Understanding of behaviour and its drivers
![Page 5: The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities Nick Hill 1,2 EJ Milner-Gulland 1, Marcus Rowcliffe.](https://reader036.fdocuments.in/reader036/viewer/2022070305/5514d5ef550346b0338b5328/html5/thumbnails/5.jpg)
Study site
Vamizi and Rongui Islands
![Page 6: The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities Nick Hill 1,2 EJ Milner-Gulland 1, Marcus Rowcliffe.](https://reader036.fdocuments.in/reader036/viewer/2022070305/5514d5ef550346b0338b5328/html5/thumbnails/6.jpg)
Study site
Tourism supports conservation and community development
The only local development organization
![Page 7: The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities Nick Hill 1,2 EJ Milner-Gulland 1, Marcus Rowcliffe.](https://reader036.fdocuments.in/reader036/viewer/2022070305/5514d5ef550346b0338b5328/html5/thumbnails/7.jpg)
Study site
The marine resources are in excellent condition.
![Page 8: The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities Nick Hill 1,2 EJ Milner-Gulland 1, Marcus Rowcliffe.](https://reader036.fdocuments.in/reader036/viewer/2022070305/5514d5ef550346b0338b5328/html5/thumbnails/8.jpg)
Vamizi Island communities
• Two community types:
–Locals
–Transients
• Each have different livelihoods
![Page 9: The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities Nick Hill 1,2 EJ Milner-Gulland 1, Marcus Rowcliffe.](https://reader036.fdocuments.in/reader036/viewer/2022070305/5514d5ef550346b0338b5328/html5/thumbnails/9.jpg)
Hypothesis
Livelihoods
Fishing behaviour
The role of fishing in livelihoods...
…spatio-temporal dynamics of fishing: where, when and how much
...effects...
• Fishing behaviour is driven by livelihoods:
• A livelihood: the capabilities, assets (including social and material resources) and activities required for a means of living.
Objectives of fishing
![Page 10: The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities Nick Hill 1,2 EJ Milner-Gulland 1, Marcus Rowcliffe.](https://reader036.fdocuments.in/reader036/viewer/2022070305/5514d5ef550346b0338b5328/html5/thumbnails/10.jpg)
Livelihoods
• Potential roles of fishing in livelihoods: One economic
activity Multiple economic activities
Subsistence Survival Semi-subsistence diversification
Accumulation Specialisation Diversification for accumulation
![Page 11: The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities Nick Hill 1,2 EJ Milner-Gulland 1, Marcus Rowcliffe.](https://reader036.fdocuments.in/reader036/viewer/2022070305/5514d5ef550346b0338b5328/html5/thumbnails/11.jpg)
Livelihoods
Livelihoods of transient communities?
Livelihoods of local communities
![Page 12: The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities Nick Hill 1,2 EJ Milner-Gulland 1, Marcus Rowcliffe.](https://reader036.fdocuments.in/reader036/viewer/2022070305/5514d5ef550346b0338b5328/html5/thumbnails/12.jpg)
Effect on fishing behaviour
• Temporal behaviour:
–Frequency of fishing
–Length of fishing trips
–Investment in gear
–Seasonality of fishing
![Page 13: The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities Nick Hill 1,2 EJ Milner-Gulland 1, Marcus Rowcliffe.](https://reader036.fdocuments.in/reader036/viewer/2022070305/5514d5ef550346b0338b5328/html5/thumbnails/13.jpg)
Effect on fishing behaviour
Environment
Travel time
Habitat
Resource distribution
Fishing location
Landing sites
• Spatial behaviour
• Method: weighted suitability modelling
• Comparison of weightings for fishermen with different livelihoods
• Verification with fishing tracks
![Page 14: The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities Nick Hill 1,2 EJ Milner-Gulland 1, Marcus Rowcliffe.](https://reader036.fdocuments.in/reader036/viewer/2022070305/5514d5ef550346b0338b5328/html5/thumbnails/14.jpg)
Effect on catch rates
• p < 0.05
0
0.5
1
1.5
2
2.5
3
3.5
Local fishers Daily / weekly visitors Long-term visitors
Av
era
ge
ca
tch
pe
r tr
ip (
US
$ p
er
pe
rso
n)
n=22 n=35 n=28
![Page 15: The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities Nick Hill 1,2 EJ Milner-Gulland 1, Marcus Rowcliffe.](https://reader036.fdocuments.in/reader036/viewer/2022070305/5514d5ef550346b0338b5328/html5/thumbnails/15.jpg)
Effect on catch rates
n=4
n=15
n=3
n=32
n=3
n=2n=1
n=13n=12
0
1
2
3
4
5
Nets Traps Handlines Spear
Ca
tch
pe
r tr
ip (
US
$ p
er
pe
rso
n)
Local fishers
Daily / weekly visitors
Long-term visitors
![Page 16: The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities Nick Hill 1,2 EJ Milner-Gulland 1, Marcus Rowcliffe.](https://reader036.fdocuments.in/reader036/viewer/2022070305/5514d5ef550346b0338b5328/html5/thumbnails/16.jpg)
Conclusion
• Are spatio-temporal dynamics of fishing behaviour driven by livelihoods?
• Linking individual fishing behaviour to livelihoods may help us predict the effects of interventions.
![Page 17: The spatio-temporal dynamics of fishing behaviour and its determinants in poor fishing communities Nick Hill 1,2 EJ Milner-Gulland 1, Marcus Rowcliffe.](https://reader036.fdocuments.in/reader036/viewer/2022070305/5514d5ef550346b0338b5328/html5/thumbnails/17.jpg)
Thank you!
Maluan / Cabo Delgado Biodiversity and Tourism Project, Mozambique