Transcript Day 1 2 Creel Surveys

Scientific support for the management of Coastal and Oceanic Fisheries
in the Pacific Islands region (SciCOFish)
Funded by European Union
(10th EDF)
Creel Surveys
Credit: B. Yeeting
SciCOFish
Funded by European Union
Credit: C. Wabnitz
Creel & Market Surveys Database Training Workshop - October/November 2014
So what is a creel survey ?
Creel
Creel is a type of small wicker basket mainly used by anglers to
hold fish or other prey. A creel is designed to function as an
evaporative cooler when lined with moss and dipped into the creek
in order to keep the catch chilled. Caught fish are inserted through
a slot in the top which is held in place by a small leather strap
(Wikipedia)
Creel survey
A creel survey consist in looking what fishers have in their fishing
basket (or for the Pacific, in their cooler) !
Survey of fishers and their catch at a landing site
SciCOFish
Funded by European Union
Creel & Market Surveys Database Training Workshop - October/November 2014
Creel survey data
Types of information
•
•
•
•
•
•
•
Informations about fishers & fishing habits
Species being caught and quantities
Species lengths/weights
Areas and habitats fished, transport
Types of gear used to catch fish
Amount of effort used to catch fish (CPUE)
Fishers perceptions
SciCOFish
Funded by European Union
Creel & Market Surveys Database Training Workshop - October/November 2014
Creel survey form
Header : it identifies the survey sheet, who, when, where
Atlantis fisheries
2156
Atlantis island
05/10/2014
USD
Tummol’s warf
Bob Pomoko
15.63087
SciCOFish
Funded by European Union
Maria Bentanu
155.10052
Creel & Market Surveys Database Training Workshop - October/November 2014
Slice C1
Paul Pidoil
07/05/1968
M
Tummol village
X
John Pidoil
10
SciCOFish
Funded by European Union
09/10/1970
M
11
Creel & Market Surveys Database Training Workshop - October/November 2014
Slice C1
Handlining
Night spear fishing
Trolling
Pasipetiksa warf
2
X
20
80
USD 80
55
SciCOFish
Funded by European Union
Creel & Market Surveys Database Training Workshop - October/November 2014
Slice C1
Examples of outputs
•
•
•
•
Average number of fishers per trip
Number of landings for lead fishers
Reasons for fishing and catch use
Average income per trip
What else could we extract ?
SciCOFish
Funded by European Union
Creel & Market Surveys Database Training Workshop - October/November 2014
Slice C2
Naso unicornis
Scarus ghobban
Lutjanus gibbus
Lutjanus bohar
Birgus latro
SciCOFish
Funded by European Union
Reef
Reef
Reef
Reef
Crab
fish
fish
fish
fish
33
3
24
31
6
21.3 kg
2 kg
10.5 kg
14 kg
7.2 kg
Night spearing
Night spearing
Handlining
Handlining
Collecting walk
Creel & Market Surveys Database Training Workshop - October/November 2014
Slice C2
Examples of outputs
• Catch composition by species – Avg number
• Catch composition by species – Avg weight
• Species richness
SciCOFish
Funded by European Union
Creel & Market Surveys Database Training Workshop - October/November 2014
Slices C3-C4
Naso unicornis
Naso unicornis
Naso unicornis
Naso unicornis
….
Scarus ghobban
Scarus ghobban
Scarus ghobban
Lutjanus gibbus
Lutjanus gibbus
Lutjanus gibbus
…
SciCOFish
Funded by European Union
FL
FL
FL
FL
33
24
26
28
cm
cm
cm
cm
FL
FL
FL
FL
FL
FL
34 cm
28 cm
32 cm
20 cm
18 cm
16 cm
0.8 kg
0.6 kg
0.62 kg
0.68 kg
Night
Night
Night
Night
0.8
0.4
0.8
0.5
0.34
0.32
Night spearing
Night spearing
Night spearing
Handlining
Handlining
Handlining
kg
kg
kg
kg
kg
kg
Creel & Market Surveys Database Training Workshop - October/November 2014
spearing
spearing
spearing
spearing
Slice C3-C4
Examples of outputs
• Catch size/weights by species – By landing and method
• Catch composition by family– Avg size and weight
• Size frequency by species
Night spear fishing
Gillnetting
SciCOFish
Funded by European Union
Creel & Market Surveys Database Training Workshop - October/November 2014
Slice C5
9
Reef fish
Reef fish
Crabs
Night spear fishing
Handlining
Collecting
3
3
1
None
Fuel
Food
Beer water
SciCOFish
Funded by European Union
USD 30
USD 5
USD 2
Creel & Market Surveys Database Training Workshop - October/November 2014
Slice C5
13
Tummoil’s warf
North pass
Frigate Island
Paramol
10 km
11.7 km
13 km
X
4 hrs
3 hrs
1 hr
X
X
4
50
X
SciCOFish
Funded by European Union
X
X
Creel & Market Surveys Database Training Workshop - October/November 2014
Slice C5
Examples of outputs
• Average trip cost
• Average distance to the furthest site
SciCOFish
Funded by European Union
Creel & Market Surveys Database Training Workshop - October/November 2014
Slice C6
X
Reef fish
Crabs
SciCOFish
Funded by European Union
kg
Piece
1
USD 1.25
USD 4
Creel & Market Surveys Database Training Workshop - October/November 2014
Slice C7
25
20
Sea cucumber fishery
X
Nearshore FADs
X
X
SciCOFish
Funded by European Union
Tummoil reef is now depleted
Less fishes
Creel & Market Surveys Database Training Workshop - October/November 2014
Slice C7
X
Fishes are getting smaller
Some species which were common are hard to find
We spend more and more time to get
less and less fishes
SciCOFish
Funded by European Union
Creel & Market Surveys Database Training Workshop - October/November 2014