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Ecology Publications & Forms |
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Ecology Publications & Forms |
| Title | POSTER: Increasing nutrients, changes in algal biomass and large Noctiluca blooms in Puget Sound: Is eutrophication fueling the microbial food web? |
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POSTER: Increasing nutrients, changes in algal biomass and large Noctiluca blooms in Puget Sound: Is eutrophication fueling the microbial food web? (Number of pages: 1) (Publication Size: 1419KB)
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| Author(s) | Friedenberg, L., J. Bos, S. Albertson, M. Keyzers, C. Maloy, B. Sackmann, and C. Krembs | ||||
| Description | Through our long-term monitoring program and aerial surveys, we have found that nutrient concentrations in Puget Sound have significantly increased and nutrient ratios have steadily changed over the last 13 years despite the strong influence of the ocean on Puget Sound water quality. We frequently document extensive algal blooms, Noctiluca blooms, and jellyfish masses at the surface. Many of the phytoplankton blooms show high abundances of autotrophic flagellates. In contrast, depth integrated algal biomass (chlorophyll a) shows a significant steady decline from 1999 to 2011. These seemingly opposing observations – high algal biomass and Noctiluca at the surface and decreasing biomass below the surface – could be clues to a shifting food web structure and nutrient fluxes in Puget Sound. The cause and impacts of these trends are discussed in the context of human pressures, climatic and oceanic boundary conditions, and planktonic food web structure. This poster was presented at the 2013 Pacific Estuarine Research Society conference, April 5, 2013, in Delta, BC. |
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The mission of the Department of Ecology is to protect, preserve, and enhance Washington’s environment. To help us meet that goal, please consider the environment before you print or request a copy.
ADA Accessibility The Department of Ecology is committed to providing people with disabilities access to information and services by meeting or exceeding the requirements of the Americans with Disabilities Act (ADA), Section 504 and 508 of the Rehabilitation Act, and Washington State Policy #188. Visit Ecology’s website for more information. |
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| Contact | Laura Friedenberg at 360-407-0273 or laura.friedenberg@ecy.wa.gov | ||||
| Keywords | Noctiluca , eutrophication, Puget Sound, nutrient, food chain |
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