Ecology of algal blooms in the Bay of Quinte: composition, diversity and dynamics
| Autor: | M. Munawar, R. Rozon, H. Niblock, M. Fitzpatrick, H. Kling, J. Lorimer |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Ecology 010604 marine biology & hydrobiology Ecology (disciplines) 010501 environmental sciences Management Monitoring Policy and Law Aquatic Science 01 natural sciences Algal bloom Environmental science Eutrophication Bay Primary productivity 0105 earth and related environmental sciences |
| DOI: | 10.6084/m9.figshare.7418450 |
| Popis: | A total of 25 algal blooms were observed during three separate surveys of the Bay of Quinte, Lake Ontario, conducted during August 2010, September 2010 and September 2011. Here we define algal blooms based on the direct measurement of phytoplankton biomass (>3 g m−3) and not proxy measures such as chlorophyll a. In this chronically eutrophic embayment, we observed 8 diatom blooms (Aulacoseira spp.), 7 cyanobacteria blooms (Dolichospermum, Gloeotrichia, Microcystis, etc.) and 10 more that were mixtures of both taxa. At the cyano-bloom sites, ≈50% or more of the total biomass was composed of species known to be toxigenic. High rates of primary production (40 – 160 mg C m−3 h−1) by the larger algal size classes (>20 μm and 2–20 μm) indicated that there were few constraints on photosynthesis during bloom events (both diatom and cyanobacteria). Productivity to biomass quotients were considerably higher for filamentous algal forms (>9 for both diatoms and cyanobacteria) compared to colonial cyanobacteria ( |
| Databáze: | OpenAIRE |
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