scholarly journals Evaluating an empirical harvest control rule for the Torres Strait Panulirus ornatus tropical rock lobster fishery

2018 ◽  
Vol 94 (3) ◽  
pp. 1095-1120 ◽  
Author(s):  
Éva Plagányi ◽  
Roy Aijun Deng ◽  
Robert A Campbell ◽  
Darren Dennis ◽  
Trevor Hutton ◽  
...  
Keyword(s):  
Rock Lobster ◽  
Control Rule ◽  
Harvest Control Rule ◽  
Lobster Fishery ◽  
Torres Strait

Implications of Quota Reallocation in the Torres Strait Tropical Rock Lobster Fishery

2013 ◽  
Vol 61 (2) ◽  
pp. 335-352 ◽  
Author(s):  
Sean Pascoe ◽  
Trevor Hutton ◽  
Ingrid van Putten ◽  
Darren Dennis ◽  
Eva Plaganyi-Lloyd ◽  
...  
Keyword(s):  
Rock Lobster ◽  
Lobster Fishery ◽  
Torres Strait

The quandary of quota management in the Torres Strait rock lobster fishery

2013 ◽  
Vol 20 (4) ◽  
pp. 326-337 ◽  
Author(s):  
I. van Putten ◽  
R. Deng ◽  
D. Dennis ◽  
T. Hutton ◽  
S. Pascoe ◽  
...  
Keyword(s):  
Rock Lobster ◽  
Lobster Fishery ◽  
Torres Strait ◽  
Quota Management

Comparing size-limit and quota policies to increase economic yield in a lobster fishery

2015 ◽  
Vol 72 (9) ◽  
pp. 1292-1305 ◽  
Author(s):  
Richard McGarvey ◽  
André E. Punt ◽  
Janet M. Matthews ◽  
John E. Feenstra ◽  
Caleb Gardner ◽  
...  
Keyword(s):  
Egg Production ◽  
Maximum Size ◽  
Catch Rate ◽  
Minimum Size ◽  
Control Rule ◽  
Exploitation Rate ◽  
Harvest Control Rule ◽  
Lobster Fishery ◽  
Size Limits ◽  
Rule Setting

To advance economic and sustainability objectives in a lobster fishery, four broadly different management policies were evaluated: minimum and maximum size limits, constant catch quotas, and quota set yearly in proportion to the previous year’s catch per unit effort (CPUE). The performance of each policy was evaluated based on its discounted economic yield, together with egg production, catch, and catch stability. Maximum size limits performed poorly for all indicators. Raising the minimum size increased economic yield by improving yield-per-recruit. Output controls, both constant and dynamic, uniformly outperformed size limits, leading to substantially higher economic yield and egg production. A dynamic harvest control rule, setting quota in proportion to the previous year’s catch rate, achieved the highest economic yield, catch, and egg production over 20 years. The optimal (30%) exploitation rate under this policy produced a 182% improvement in economic yield compared with a baseline strategy of only minimum size, but led to a mean year-to-year change in quota of 11.5% in response to yearly variable recruitment. This quota-setting management regime is straightforward to implement, using only catch rate as input. When absolute exploitation rate estimates are not available, this quota-setting harvest control rule can be constructed using only a target level of effort.

Trade-offs in transitions between indigenous and commercial fishing sectors: the Torres Strait tropical rock lobster fishery

2016 ◽  
Vol 23 (6) ◽  
pp. 463-477 ◽  
Author(s):  
T. Hutton ◽  
E.I. van Putten ◽  
S.D. Pascoe ◽  
R.A. Deng ◽  
É.E. Plagányi ◽  
...  
Keyword(s):  
Commercial Fishing ◽  
Rock Lobster ◽  
Trade Offs ◽  
Lobster Fishery ◽  
Torres Strait

scholarly journals Changes in the lease and permanent sale quota markets of a rock lobster fishery in response to stock abundance

2015 ◽  
Vol 72 (5) ◽  
pp. 1555-1564 ◽  
Author(s):  
Rafael León ◽  
Caleb Gardner ◽  
Ingrid van Putten ◽  
Klaas Hartmann
Keyword(s):  
Granger Causality Test ◽  
Economic Rent ◽  
Rock Lobster ◽  
Markov Modelling ◽  
Causality Test ◽  
Individual Transferable Quotas ◽  
Theoretical Pattern ◽  
Lobster Fishery ◽  
Trade Market ◽  
Stock Abundance

AbstractEffective individual transferable quotas (ITQ) systems rebuild stocks and allow transfer of quotas to more efficient operators. This process requires functional markets for both quota sales and temporary quota leases. These markets are expected to respond to changes in economic rent from the fishery, which is influenced by stock abundance and the international rock lobster price. This research used multistate Markov modelling and Granger causality test to examine changes in the permanent and temporary quota trade in the Tasmanian rock lobster fishery quota market, during periods of both increasing and decreasing stock abundance. The permanent quota trade market was more active during the period of stock growth, while the quota lease market was active in both periods of stock growth and decline. In contrast to theoretical trends in ITQ fisheries, trades in both markets were not linked to the technical efficiency (i.e. catching capability) of operators, but were more driven by the quota owners' financial capacity (i.e. number of owned quotas). Prolonged and unexpected stock decline affected the quota market so that it deviated from the theoretical pattern of ITQ fisheries. Operators previously active in the market reduced their activity, while smaller operators and firms that previously had not traded became more active, so the fleet expanded with smaller operators entering.

Climate Vulnerability and its Perceived Impact on the Namibian Rock Lobster Fishery

2021 ◽  
pp. 1843-1863
Author(s):  
Johannes A. Iitembu ◽  
Paulus Kainge ◽  
Warwick H. H. Sauer
Keyword(s):  
Rock Lobster ◽  
Climate Vulnerability ◽  
Lobster Fishery ◽  
Perceived Impact

scholarly journals Evaluating the ecosystem effects of variation in recruitment and fishing effort in the western rock lobster fishery

2013 ◽  
Vol 145 ◽  
pp. 128-135 ◽  
Author(s):  
Hector Lozano-Montes ◽  
Neil R. Loneragan ◽  
Russ Babcock ◽  
Nick Caputi
Keyword(s):  
Fishing Effort ◽  
Rock Lobster ◽  
Ecosystem Effects ◽  
Lobster Fishery
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