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| Title: | Event-scale response of phytoplankton to watershed inputs in a subestuary: Timing, magnitude and location of blooms |
| Authors: | Gallegos, Charles L. |
| Issue Date: | 1992 |
| Citation: | Limnology and Oceanography, 37(4), 813-28 |
| Abstract: | Subestuaries receive direct runoff from a local w’atershed and exchange water at their mouth
with a mainstem estuary. For subestuaries close to the headwaters of the mainstem estuary, the
potential exists for a single rainfall event to supply nutrients to the subestuary on two time scales
corresponding to arrival of flow from the two sources. We present a model of phytoplankton blooms
based on the Rhode River-Muddy Creek subestuary of Chesapeake Bay which indicates that
nutrient inputs from local sources should be capable of producing blooms of small scale and short
duration, whereas influx from the mainstem estuary causes blooms of greater extent. Phytoplankton
dynamics were simulated with a modification of models for nutrient-saturated standing crop, in
which external nutrient inputs were assumed to favor growth of components of the community
that have lower loss rates. Field data for two events during late spring and early summer 1989
demonstrated the initiation of blooms by the arrival of freshwater from local and remote sources.
As predicted by the model, blooms initiated by the arrival of remote inputs were of larger spatial
extent than those triggered by local inputs. |
| Appears in Collections: | SERC Ecological Modeling staff publications
SERC Publications
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Files in This Item:
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Size | Format |
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| galleg_BloomEvent1.pdf | | 1347Kb | Adobe PDF | View/Open |  |
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