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The Effects of Global Warming on Fisheries

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  • Medel, Carlos A.

Abstract

This paper develops two fisheries models in order to estimate the effect of global warming (GW) on firm value. GW is defined as an increase in the average temperature of the earth's surface because of CO₂ emissions. It is assumed that (i) GW exists, and (ii) higher temperatures negatively affect biomass. The literature on biology and GW supporting these two crucial assumptions is reviewed. The main argument presented is that temperature increase has two effects on biomass, both of which have an impact on firm value. First, higher temperatures cause biomass to oscillate. To measure the effect of biomass oscillation on firm value Pindyck's (1984) model is modified to include water temperature as a variable. The results indicate that a 1 to 20% variation in biomass causes firm value to fall from 6 to 44%, respectively. Second, higher temperatures reduce biomass, and a modification of the Smith's (1968) model reveals that an increase in temperature anomaly between +1 and +8°C causes fishery's value to decrease by 8 to 10%.

Suggested Citation

  • Medel, Carlos A., 2011. "The Effects of Global Warming on Fisheries," MPRA Paper 28373, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:28373
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    References listed on IDEAS

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    Cited by:

    1. Da Rocha, José María & Gutiérrez Huerta, María José & Villasante, Sebastián, 2013. "Economic Effects of Global Warming under Stock Growth Uncertainty: The European Sardine Fishery," DFAEII Working Papers 1988-088X, University of the Basque Country - Department of Foundations of Economic Analysis II.

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    More about this item

    Keywords

    fisheries; fisheries economics; global warming; climate change;
    All these keywords.

    JEL classification:

    • Q22 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Fishery
    • Q54 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Climate; Natural Disasters and their Management; Global Warming

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