Browsing by Author "Bronnmann, J."

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Consumer Preference Heterogeneity and Preference Segmentation: The Case of Ecolabeled Salmon in Danish Retail Sales
(Marine Resource Economics, 2020) Ankamah-Yeboah, I.; Asche, F.; Bronnmann, J.; et al.
The popularity of sustainably produced food products has grown rapidly in recent years. Ecolabels are used to indicate the environmental sustainability of products and have been implemented in the seafood market, with the leading ecolabel being that of the Marine Stewardship Council (MSC) for wild fish. However, the effect of ecolabels on consumer decision-making remains unclear regarding actual purchasing behavior. This study analyzes scanner data from a household panel in Denmark, accounting for consumer heterogeneity using random parameters and latent class logit models to identify the effect of ecolabels. The results indicate substantial consumer preference heterogeneity concerning important salmon attributes. Salmon attributes that confer convenience to household fish consumption appear to be very important in consumer choices. Ecolabeling has a significant effect on household decision-making, but the majority of consumers are more likely to choose non-labeled products, which may be due to the low availability of eco-labeled products. Five consumer segments are identified, revealing one consumer segment with a preference for organic labeled salmon, comprising 15% of households. However, a consumer segment for MSC-labeled salmon is not identified. The implication is that management can rely on a segment of consumers to implement organic principles in salmon farming, but the preference for sustainable salmon fishing is inconclusive due to uncertain confounding effects.
Price transmission in the pangasius value chain from Vietnam to Germany
(Aquaculture Reports, 2019-12-31) Ankamah-Yeboah, I.; Thong, N.T.; Bronnmann, J.; Nielsen, M.; Roth, E.; Schulze-Ehlers, B.
Evidence of market integration between farmed pangasius and wild-caught whitefish is provided in the literature, pointing towards pangasius prices being determined on the large international whitefish market. In the presence of price transmission in the value chain, global growth of pangasius farming does therefore not in itself reduce the farm-gate prices in Vietnam. In this paper, price transmission in the pangasius value chain from farmers in Vietnam, via export to final consumption in Germany, is tested using the Johansen cointegration framework. Price transmission is identified both between farm-gate prices and export prices in Vietnam and between export prices and retail prices in Germany. The Law of One Price was rejected in both cases, indicating imperfect price transmission. Weak exogeneity tests of market leadership identify a value chain with downstream market leadership consisting of German retailers leading exporters, which themselves lead farmers. The implication is that growth of Vietnamese pangasius farming can continue, ceteris paribus, without reducing prices substantially. Vietnamese farmers can invest in expansions without fearing self-inflicted price falls, but farmers and local communities remain prone to fluctuations following from supply and demand changes at the international whitefish market outside of their control.