Integrating different user groups into fishery management

Transcription

1 Integrating different user groups into fishery management Integrating different user groups into fishery management M. Quaas and E. Regnier Economics Institute, Christian-Albrecht University, Kiel IIFET 2016, Scotland

2 1 The State of Art 2 The Model 3 References

3 Conflicting interests between fisheries user groups Different user groups have stakes in fisheries larger scale commercial fishing firms etc... small-scale or part-time artisanal fishermen recreational fishermen

4 Conflicting interests between fisheries user groups Different user groups have stakes in fisheries larger scale commercial fishing firms etc... small-scale or part-time artisanal fishermen recreational fishermen These fishing activities generate economic value in different ways. Ex: Recreational fishing requires investment in equipment and durable goods, fishing trip expenditures, supports a tourist sector.

5 Conflicting interests between fisheries user groups Different user groups have stakes in fisheries larger scale commercial fishing firms etc... small-scale or part-time artisanal fishermen recreational fishermen These fishing activities generate economic value in different ways. Ex: Recreational fishing requires investment in equipment and durable goods, fishing trip expenditures, supports a tourist sector. These groups often exploit the same fish stocks and can be in competition with each other rivalry for the resource and over-use gear interferences

6 Conflicting interests between fisheries user groups Different user groups have stakes in fisheries larger scale commercial fishing firms etc... small-scale or part-time artisanal fishermen recreational fishermen These fishing activities generate economic value in different ways. Ex: Recreational fishing requires investment in equipment and durable goods, fishing trip expenditures, supports a tourist sector. These groups often exploit the same fish stocks and can be in competition with each other rivalry for the resource and over-use gear interferences Negative externalities undermine the sustainability and value withdrawn by society from fisheries resources

7 Facts about Recreational Fisheries Taking world as a whole, Cooke and Cowx (2004) estimate that recreational fish harvest may amount to some 12% of the global capture fisheries harvest

8 Facts about Recreational Fisheries Taking world as a whole, Cooke and Cowx (2004) estimate that recreational fish harvest may amount to some 12% of the global capture fisheries harvest Regarding Europe, marine recreational fisheries gain importance: In 2008, Bay of Biscay: recreational catches of sea bass same order of magnitude as those of the professional sector (Ifremer and BVA, 2009) Between , the western Baltic Sea: annual recreational fishery cod harvests a share varying between 34 to 70% of the German commercial landings (Strehlow et al., 2012)

9 Facts about Recreational Fisheries Taking world as a whole, Cooke and Cowx (2004) estimate that recreational fish harvest may amount to some 12% of the global capture fisheries harvest Regarding Europe, marine recreational fisheries gain importance: In 2008, Bay of Biscay: recreational catches of sea bass same order of magnitude as those of the professional sector (Ifremer and BVA, 2009) Between , the western Baltic Sea: annual recreational fishery cod harvests a share varying between 34 to 70% of the German commercial landings (Strehlow et al., 2012) Management of recreational fisheries observed worldwide generally relies on a combination of regulatory measures prohibition to cell caught fish purchase of an angling license control of fishing effort (protection of some species, bag limits, legal size, gear restrictions, protected areas or closed seasons, etc.)

10 Harry V. Strehlow, Norbert Schultz, Christopher Zimmermann, and Cornelius Hammer. Cod catches taken by the German recreational fishery in the western Baltic Sea, : implications for stock assessment and management. ICES J. Mar. Sci. (2012) 69 (10): Figure: Cod harvest in t y 1 in the German Baltic Sea (SD ), and total landings in the German commercial fishery (SD ) from 2005 to 2010, including recreational cod releases in 2009/ 2010

11 Facts about Small Scale Fisheries in Europe Large number of vessels: 84% of the vessels of the EU s fishing fleets (STECF, 2013)

12 Facts about Small Scale Fisheries in Europe Large number of vessels: 84% of the vessels of the EU s fishing fleets (STECF, 2013) About 30% of EU landings in value and 9% in volume

13 Facts about Small Scale Fisheries in Europe Large number of vessels: 84% of the vessels of the EU s fishing fleets (STECF, 2013) About 30% of EU landings in value and 9% in volume The regulation of the Small Scale Fisheries sector is heterogenous So far the CFP has not managed to provide a regulatory frame that addresses the needs of the SSF There is no commonly agreed definition of SSF at European level Conservation measures are decided in practically equal proportions at EU, national or regional/local levels Open access situations are possible in SSF (Guyader et al., 2013)

14 1 The State of Art 2 The Model 3 References

15 Integrating different user groups into fishery management The Model Objective function Question: What is the efficient or socially optimal quota allocation of resource use rights over fishermen with different objectives, so as to maximize the societal benefits withdrawn from living marine resources prevent overexploitation of fish stocks U(H t, L t ) = u(h t ; η) αv(l t ; β) Utility from catching a quantity H t with fishing time (labor) L t User groups are differentiated via parametrization: α, η, β

16 Integrating different user groups into fishery management The Model Production technology H t = F (x t, K t, L t ) = qx θ t L γ t K 1 γ t }{{} =E t ( effort ) Described by a modified Schaefer function Fishing effort is expressed as a combination of : time at sea, L t, and capital,k t θ: fishing selectivity and fishing ground features

17 Integrating different user groups into fishery management The Model Assuming a market for fishing quotas : Utility maximizing program max U (H t, L (H t )) = u(h t ) αv(l (H t )) H t s.t. C t = K (H t )r t H t Q t L (H t ) is the cost minimizing demand for time at sea

18 Integrating different user groups into fishery management The Model Assuming a market for fishing quotas : Utility maximizing program max U (H t, L (H t )) = u(h t ) αv(l (H t )) H t s.t. C t = K (H t )r t H t Q t L (H t ) is the cost minimizing demand for time at sea We apply the following specification for v(l t ) : v(l t ) = L1+β t 1 + β where β conveys the scale of the recreational fishing activity as well as the satiety of this fishing group w.r.t. L t

19 Integrating different user groups into fishery management The Model The inverse demand function for quota p t = u (H) α L (H t ) β+1 γh t where p t stands for the (shadow) price of a harvesting right, Expectations: CF α w and β = 0; RF β > 0

20 Integrating different user groups into fishery management The Model Figure: Opportunity cost of time at sea : commercial (blue) versus recreational (yellow) fishermen

21 Integrating different user groups into fishery management The Model 100 pd H Figure: Inverse demand functions : commercial (blue) versus recreational (yellow) fishermen

22 Integrating different user groups into fishery management The Model The slope of the inverse demand function : p Ht = u (H t ) α L (H t ) β+1 H 2 t ( βγ ) 0 β(1 γ) + 1 with u (H t ) 0 For β > 0 the slope of the inverse demand function is steeper Those who derive utility from time at sea have a more inelastic demand to variations in quota prices

23 Integrating different user groups into fishery management The Model The slope of the inverse demand function : p Ht = u (H t ) α L (H t ) β+1 H 2 t ( βγ ) 0 β(1 γ) + 1 with u (H t ) 0 For β > 0 the slope of the inverse demand function is steeper Those who derive utility from time at sea have a more inelastic demand to variations in quota prices The boundary of the inverse demand function for H 0 : lim p t = u (H t ) H t 0 Notice that this outcome is specific to the specification retained for v(l t )

24 Integrating different user groups into fishery management The Model inverse quota demand, fishery 1 p inverse quota demand, fishery 1 inverse quota demand, fishery 2 inverse quota demand, fishery catch H 1 0 TAC

25 Integrating different user groups into fishery management The Model

26 Integrating different user groups into fishery management The Model inverse quota demand, fishery 1 p 1 2 inverse quota demand, fishery catch H 1 0

27 Forthcoming research lines Calibration at work: the case of German Cod catches in the western Baltic Sea Estimate the shadow price of harvesting quotas and the optimal allocation of fishing rights between three user groups (SSF, LSF, RF), given effective TAC set on Cod Test the sensitivity of our results to the specification of u(h t ) Appraise the welfare loss subsequent to an inefficient regulation: different quota price across user groups

28 1 The State of Art 2 The Model 3 References

29 References Cooke, S. J. and Cowx, I. G. (2004). The role of recreational fishing in global fish crises. BioScience, 54: Guyader, O., Berthou, P., Koutsikopoulos, C., Alban, F., Demanèche, S., Gaspar, M., Eschbaum, R., Fahy, E., Tully, O., Reynal, L., Curtil, O., Frangoudes, K., and Maynou, F. (2013). Small scale fisheries in europe: A comparative analysis based on a selection of case studies. Fisheries Research, 140(0):1 13. Ifremer and BVA (2009). Enquête relative à la pêche de loisir (récréative et sportive) en mer en métropole et dans les dom. Bibliomer, 47(1):1 13. Strehlow, H. V., Schultz, N., Zimmermann, C., and Hammer, C. (2012). Cod catches taken by the german recreational fishery in the western baltic sea, : implications for stock assessment and management. ICES Journal of Marine Science: Journal du Conseil, 69(10):

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