How are climate and marine biological outbreaks functionally linked?
Hydrobiologia
By: Marshall L. Hayes, Joseph Bonaventura, Todd P. Mitchell, Joseph M. Prospero, Eugene A. Shinn, Frances Van Dolah, and Richard T. Barber
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Abstract
Since the mid-1970s, large-scale episodic events such as disease epidemics, mass mortalities, harmful algal blooms and other population explosions have been occurring in marine environments at an historically unprecedented rate. The variety of organisms involved (host, pathogens and other opportunists) and the absolute number of episodes have also increased during this period. Are these changes coincidental? Between 1972 and 1976, a global climate regime shift took place, and it is manifest most clearly by a change in strength of the North Pacific and North Atlantic pressure systems. Consequences of this regime shift are: (1) prolonged drought conditions in the Sahel region of Africa; (2) increased dust supply to the global atmosphere, by a factor of approximately four; (3) increased easterly trade winds across the Atlantic; (4) increased eolian transport of dust to the Atlantic and Caribbean basins; and (5) increased deposition of iron-rich eolian dust to typically iron-poor marine regions. On the basis of well-documented climate and dust observations and the widely accepted increase in marine outbreak rates, this paper proposes that the increased iron supply has altered the micronutrient factors limiting growth of opportunistic organisms and virulence of pathogenic microbes, particularly in macronutrient-rich coastal systems.
Suggested Citation
Hayes, M.L., Bonaventura, J., Mitchell, T.P., Prospero, J.M., Shinn, E., Van Dolah, F., Barber, R.T., 2001, How are climate and marine biological outbreaks functionally linked?: Hydrobiologia, v. 460, no. 1-3, p. 213-220, https://doi.org/10.1023/A:1013121503937.
ISSN: 1573-5117 (online)
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | How are climate and marine biological outbreaks functionally linked? |
| Series title | Hydrobiologia |
| DOI | 10.1023/A:1013121503937 |
| Volume | 460 |
| Issue | 1-3 |
| Year Published | 2001 |
| Language | English |
| Publisher | Springer |
| Contributing office(s) | Coastal and Marine Geology Program |
| Description | 8 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Hydrobiologia |
| First page | 213 |
| Last page | 220 |