Toxic materials, fishing, and environmental variation: Simulated effects on striped bass population trends
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Abstract
Decreased survival of larval striped bass Morone saxatilis resulting from toxic chemicals in the environment and decreased survival of adults caused by fishing both are suspected as agents contributing to the decline in the Chesapeake Bay stock since the mid‐1970s. The relative power of each type of mortality to cause population declines was evaluated with simulation techniques. Equivalent levels of added mortality induced qualitatively identical and quantitatively similar trends in population simulations for all conditions examined except if strong density‐dependent mortality preceded the contaminant toxicity. In this case the contaminant effect caused a greater reduction in yield, but the population did not tend toward extinction. The results indicate that the observed downward trend in the Chesapeake Bay population can be halted or reversed by a reduction in fishing mortality, even if contaminant toxicity is the proximate cause for the decline.
Suggested Citation
Goodyear, C., 1985, Toxic materials, fishing, and environmental variation: Simulated effects on striped bass population trends: Transactions of the American Fisheries Society, v. 114, no. 1, p. 107-113, https://doi.org/10.1577/1548-8659(1985)114<107:TMFAEV>2.0.CO;2.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Toxic materials, fishing, and environmental variation: Simulated effects on striped bass population trends |
| Series title | Transactions of the American Fisheries Society |
| DOI | 10.1577/1548-8659(1985)114<107:TMFAEV>2.0.CO;2 |
| Volume | 114 |
| Issue | 1 |
| Year Published | 1985 |
| Language | English |
| Publisher | American Fisheries Society |
| Contributing office(s) | Leetown Science Center |
| Description | 7 p. |
| First page | 107 |
| Last page | 113 |
| Country | United States |
| State | Maryland |
| Other Geospatial | Chesapeake Bay |