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In addition to indirect support to fisheries, marine habitats also provide non-use benefits often overlooked in most bioeconomic models.We expand a dynamic bioeconomic fisheries model where presence of natural habitats reduces fishing cost via aggregation effects and provides non-use benefits. The theoretical model is illustrated with an application to cold-water corals in Norway where two fishing methods are considered—destructive bottom trawl and non-destructive coastal gear. Non-use values of cold-water corals in Norway are estimated using a discrete choice experiment. Both the theoretical model and its empirical applications demonstrate how non-use values impact optimal fishing practices.
This study examines market integration between the cold and warmwater shrimp value chain in the UK, Denmark, Italy, Sweden, and Norway using cointegration methods. For all countries, market integration exists between cold and warmwater unprocessed shrimp imports, where the law of one price (LOP) holds in three of the five cases. For processed shrimp, the LOP holds in three of four integrated cases, and for retail sales in the UK and Denmark, the LOP fails to hold in the presence of market integration. Unprocessed coldwater shrimp leads the market in northern Europe. Downstream, prices adjust within a few months, indicating that a shrimp is a shrimp. In the short-run, the coldwater value chain seems to be protected from competition, but provides opportunities for a shift in consumer demand towards warmwater in the long-run. This implies that coldwater shrimp prices are determined by demand and supply of warmwater shrimp, which is 15 times larger.
Tourists and visitors to the seaside who seek authentic places with a real identity can lead to an opportunity to maintain some seaside fishing activities. In this context, fishing activities not only provide commodity goods but also have other functions. In this respect, the concept of the multifunctionality of fishing activities is emerging. We focus on the provision of amenities from the fishing sector, such as the presence of fishing boats or the direct sale of seafood, for which there is a demand that partly conditions an individual's choice of places to visit on the coast. We used a choice experiments method to estimate willingness to pay for these amenities which are produced jointly by commercial fishing. The empirical study was conducted on a sample of more than 2,000 people surveyed along the coasts of the English Channel and the North Sea.
This study examines the US demand for shrimp differentiated by source including eight import sources (China, Ecuador, India, Indonesia, Mexico, Thailand, Vietnam, and rest of world [ROW]) and three domestic sources (Gulf of Mexico landings by size category). Due to endogeneity of import quantities and exogeneity of Gulf of Mexico landings, by size category, a mixed Rotterdam demand model was used to estimate the eleven-equation demand system. Results associated with the import component of the model appear satisfactory, with negative own-price elasticities and positive cross-price elasticities (implying substitutability among import sources). Many of the cross-price elasticities, however, were small. A 1% change in all import prices was found to result in a 0.98% change in the Gulf of Mexico dockside price; an expected result given the large share of total US shrimp supply represented by imports.
On the basis of a popular two-factor approach applied in commodity markets, we develop a model featuring seasonality and study futures contracts written on fresh farmed salmon, which have been actively traded at the Fish Pool market in Norway since 2006. The model is estimated by means of Kalman filtering, using a rich data set of contracts with different maturities traded at Fish Pool between 01/01/2010 and 24/04/2014. The results are then discussed in the context of other commodity markets, specifically live cattle, which is a substitute. We show that the seasonally adjusted model proposed in this article describes the behavior of salmon price very well. More importantly we show that seasonality exists in the salmon futures market. This is highly important in pricing of contingent claims, designing hedging strategies, and making real investment decisions in marine resources.