Is there a relationship between fisheries and farming? Interdependence of fisheries, animal production and aquaculture

Kristófersson, Daði Már; Anderson, James L.

doi:10.1016/j.marpol.2005.11.004

Cited by 97 publications

(61 citation statements)

References 17 publications

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“…The anchoveta is a small, bony pelagic fish that is mostly reduced to fishmeal. Traditionally, fishmeal was a part of the larger market for vegetable meals that is dominated by soybean meal (26), and the price of fishmeal relative to soybean meal was constant in the long run. With increased demand for fishmeal from growth in aquaculture, this relationship changes during ENSO periods (27,28).…”

Section: Discussionmentioning

confidence: 99%

Seafood prices reveal impacts of a major ecological disturbance

Smith

Øglend

Kirkpatrick

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

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Coastal hypoxia (dissolved oxygen ≤ 2 mg/L) is a growing problem worldwide that threatens marine ecosystem services, but little is known about economic effects on fisheries. Here, we provide evidence that hypoxia causes economic impacts on a major fishery. Ecological studies of hypoxia and marine fauna suggest multiple mechanisms through which hypoxia can skew a population's size distribution toward smaller individuals. These mechanisms produce sharp predictions about changes in seafood markets. Hypoxia is hypothesized to decrease the quantity of large shrimp relative to small shrimp and increase the price of large shrimp relative to small shrimp. We test these hypotheses using time series of size-based prices. Naive quantitybased models using treatment/control comparisons in hypoxic and nonhypoxic areas produce null results, but we find strong evidence of the hypothesized effects in the relative prices: Hypoxia increases the relative price of large shrimp compared with small shrimp. The effects of fuel prices provide supporting evidence. Empirical models of fishing effort and bioeconomic simulations explain why quantifying effects of hypoxia on fisheries using quantity data has been inconclusive. Specifically, spatial-dynamic feedbacks across the natural system (the fish stock) and human system (the mobile fishing fleet) confound "treated" and "control" areas. Consequently, analyses of price data, which rely on a market counterfactual, are able to reveal effects of the ecological disturbance that are obscured in quantity data. Our results are an important step toward quantifying the economic value of reduced upstream nutrient loading in the Mississippi Basin and are broadly applicable to other coupled human-natural systems.hypoxia | fisheries | coupled human-natural systems | bioeconomics | spatial dynamics F ertilizer use in coastal watersheds and agriculture intensification contribute to a growing incidence of coastal ecological disturbances (1-4). Of particular concern is coastal hypoxia [dissolved oxygen (DO) ≤ 2 mg/L] and potential impacts on marine fauna (1-4). The Western Hemisphere's largest area of seasonal hypoxia is in the Gulf of Mexico (GoM; >20,000 km 2 ) and overlaps with what was once the highest value fishery in the United States (brown shrimp) (www.st.nmfs.noaa.gov/commercial-fisheries/index) (5-7). Because controlling nutrient runoff upstream is costly, identifying and quantifying economic benefits downstream, including benefits to commercial fisheries, are essential for policy analysis (www.st. nmfs.noaa.gov/commercial-fisheries/index) (8-10). Although studies demonstrate ecological effects of hypoxia, economic consequences have not been established in this fishery.GoM brown shrimp (Farfantepenaeus aztecus) provide a unique opportunity to study the economic effects of hypoxia. First, the fishery is concentrated in regions of the GoM that become hypoxic seasonally (7) (SI Appendix, Figs. S1 and S2). Second, the temporal dynamics of brown shrimp and hypoxia match. Within season, harvest and hy...

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Section: Discussionmentioning

confidence: 99%

Seafood prices reveal impacts of a major ecological disturbance

Smith

Øglend

Kirkpatrick

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

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“…Kristofersson and Andersen [66] found that the historically strong price relationship between fishmeal and soybean meal has weakened since the late 1990s ( Figure 6). For these authors, the most likely reason for this change was increased demand for specialty uses of fishmeal, not only from aquaculture but also from the pork and poultry industries.…”

Section: Coping Strategy 8: Reducing Linkage Of Fishmeal Price With Smentioning

confidence: 99%

Coping Strategies to Deal with Environmental Variability and Extreme Climatic Events in the Peruvian Anchovy Fishery

2011

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Abstract:The Peruvian anchovy fishery is the largest worldwide in terms of catches. The fishery started during the mid 1950s, and since then it has been highly dependent on natural stock fluctuations, due to the sensitivity of anchovy stocks to ocean-climate variability. The main driver of anchovy stock variability is the El Niño Southern Oscillation (ENSO), and three extreme ENSO warm events were recorded in

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“…The impacts of regional fluctuations in fishmeal are felt globally, allowing us to estimate the vulnerabilities of this climate-driven trade at different scales. Currently aquaculture absorbs almost 70% and 90% of the total fishmeal and fish oil production, respectively (Tacon and Metian, 2008), raising concerns over whether aquaculture can contribute to satisfying the increasing global demand for fish while depending so heavily on capture fisheries (Asche and Tveterås, 2004;Delgado et al, 2003;Deutsch et al, 2007;Kristofersson and Anderson, 2006;Naylor et al, 2000;Tacon and Metian, 2008).…”

Section: Methodology For Global Assessment Of a Marine-based Commoditmentioning

confidence: 99%

Predicting the Impacts and Socio‐Economic Consequences of Climate Change on Global Marine Ecosystems and Fisheries

et al. 2011

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Climate change is accelerating and is already affecting the marine environment. Estimating the effects of climate change on the production of fish resources, and their dependent societies, is complex because of:1. difficulties of downscaling Global Climate Models (GCM) to scales of biological relevance; 2. uncertainties over future net primary production and its transfer through the food chain; 3. difficulties in separating the multiple stressors affecting fish production; and 4. inadequate methodology to estimate human vulnerabilities to these changes.QUEST_Fish, a research project led from the UK, is addressing some of these challenges through an innovative, multi-disciplinary approach focused on estimating the added impacts that climate change is likely to cause, and the subsequent additional risks and vulnerabilities of these effects for human societies. The project uses coupled shelf seas biophysical ecosystem models forced by GCM forecasts to predict ecosystem functioning in past, 32 World Fisheries: A Social-Ecological Analysis present, and future time-slices. For each slice, and for 20 Large Marine Ecosystems, we estimate plankton production and use this to estimate size-based fish production through models based on macro-ecological theory. Ways of assessing vulnerability of fisheries to future climate change are developed, including the market consequences for fish-based global commodities. The results provide a new framework and new insights into the complex interactions between humans and nature.

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Is there a relationship between fisheries and farming? Interdependence of fisheries, animal production and aquaculture

Cited by 97 publications

References 17 publications

Seafood prices reveal impacts of a major ecological disturbance

Seafood prices reveal impacts of a major ecological disturbance

Coping Strategies to Deal with Environmental Variability and Extreme Climatic Events in the Peruvian Anchovy Fishery

Predicting the Impacts and Socio‐Economic Consequences of Climate Change on Global Marine Ecosystems and Fisheries

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