有限进入混合渔业的日常供应响应

IF 2 3区经济学 Q2 ECONOMICS

Marine Resource Economics Pub Date : 2020-12-04 DOI:10.1086/711384

Xiaozi Liu, D. Shaw, T. Bjørndal, M. Heino

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引用次数: 1

摘要

小规模渔民的短期供应决策研究不足，通常是因为数据限制。我们利用台湾混合物种拖网渔业的每日渔获量和价格的独特数据集，其特征是在价格形成之前做出的目标决策。为了研究预期价格对渔民供应决策的影响，我们在11种鱼类的看似无关的回归系统中建立了一个向量误差校正模型。我们发现了几个物种的价格弹性短期供应：最大日供应价格弹性（PES）在0.4至1.1之间，除一个物种外，对所有物种都具有统计学意义。八个物种的长期PES（大约每周）>1。相比之下，波浪高度的弹性较弱（短期弹性中值为-0.4）。这些发现对于拖网渔业来说是出乎意料的，因为人们认为拖网渔业的选择性很低。我们的研究结果强调了拍卖市场必须激励强调质量而非数量的捕鱼活动的潜力。

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The Day-to-Day Supply Responses of a Limited-Entry Mixed Fishery

Small-scale fishers’ short-run supply decisions are understudied, often because of data limitations. We utilize a unique dataset of daily catches and prices from a mixed-species trawl fishery in Taiwan, characterized by targeting decisions made before prices are formed. To investigate the effect of expected prices on fishers’ supply decisions, we formulate a vector error correction model in a seemingly unrelated regression system of 11 fish species. We find a price-elastic short-run supply for several species: the maximum daily price elasticity of supply (PES) ranges from 0.4 to 1.1 and is statistically significant for all but one species. The long-run PES (approx. weekly) is >1 for eight species. In contrast, elasticity with respect to wave height is weak (the median short-run elasticity is −0.4). These findings are unexpected for trawl fisheries, which are believed to have low selectivity. Our results highlight the potential that auction markets have to incentivize fishing that emphasizes quality over quantity.

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来源期刊

Marine Resource Economics 农林科学-渔业

CiteScore

4.30

自引率

10.30%

发文量

审稿时长

>12 weeks

期刊介绍： Marine Resource Economics (MRE) publishes creative and scholarly economic analyses of a range of issues related to natural resource use in the global marine environment. The scope of the journal includes conceptual and empirical investigations aimed at addressing real-world oceans and coastal policy problems. Examples include studies of fisheries, aquaculture, seafood marketing and trade, marine biodiversity, marine and coastal recreation, marine pollution, offshore oil and gas, seabed mining, renewable ocean energy sources, marine transportation, coastal land use and climate adaptation, and management of estuaries and watersheds.