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DOI | 10.1016/j.hal.2018.08.004 |
Environmental factors influencing the quantitative distribution of microcystin and common potentially toxigenic cyanobacteria in US lakes and reservoirs | |
Beaver, John R.1; Tausz, Claudia E.1; Scotese, Kyle C.1; Pollard, Amina, I; Mitchell, Richard M.2 | |
发表日期 | 2018-09-01 |
ISSN | 1568-9883 |
卷号 | 78页码:118-128 |
英文摘要 | Many species of cyanobacteria are capable of producing toxins and causing nuisance blooms, however response to environmental conditions is likely taxon-specific. Environmental factors influencing cyanobacterial composition and toxin production in lakes have been examined in many studies; yet are often confined to individual water bodies, or to a small number of systems within the same region. Here, data from the 2012 USEPA National Lakes Assessment are used to examine relationships between biovolume of common potentially-toxigenic cyanobacteria (Aphanizomenon spp., Cylindrospermopsis spp., Dolichospermum spp., Microcystis spp. and Planktothrix spp.) and environmental variables across the entire conterminous United States, and results are compared across nine distinct ecoregions. Total phosphorus and water clarity were identified as the most influential environmental factors correlated with phytoplankton community composition. The Northern, Southern and Temperate Plains ecoregions displayed the highest biovolumes of potentially toxigenic taxa on average, as well as highest mean concentrations of microcystin. In those three ecoregions, samples with microcystin concentrations greater than 1 ppb were primarily dominated by Planktothrix spp. while in all other ecoregions Dolichospermum spp. was the dominant genus. Canonical Correlation Analysis revealed a strong association between high microcystin concentrations and high nutrient concentrations (total nitrogen and total phosphorus), and between high microcystin concentrations and low percentage of watershed forest cover. Results from this study indicate that the likely occurrence of potentially toxigenic taxa in lakes and reservoirs is predictable on a biogeographical basis, depending on morphological and water quality characteristics. Data from this study may be useful to regional managers attempting to prevent or mitigate nuisance cyanobacterial blooms. |
英文关键词 | National Lakes Assessment;Ecoregion;Water quality;Phytoplankton;Harmful algal blooms;Canonical correlation analysis |
语种 | 英语 |
WOS记录号 | WOS:000447112000013 |
来源期刊 | HARMFUL ALGAE
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来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/56871 |
作者单位 | 1.BSA Environm Serv Inc, 23400 Mercantile Rd,Suite 8, Beachwood, OH 44122 USA; 2.US EPA, Off Wetlands Oceans & Watersheds, 1200 Penn Ave,4503-T, Washington, DC 20460 USA |
推荐引用方式 GB/T 7714 | Beaver, John R.,Tausz, Claudia E.,Scotese, Kyle C.,et al. Environmental factors influencing the quantitative distribution of microcystin and common potentially toxigenic cyanobacteria in US lakes and reservoirs[J]. 美国环保署,2018,78:118-128. |
APA | Beaver, John R.,Tausz, Claudia E.,Scotese, Kyle C.,Pollard, Amina, I,&Mitchell, Richard M..(2018).Environmental factors influencing the quantitative distribution of microcystin and common potentially toxigenic cyanobacteria in US lakes and reservoirs.HARMFUL ALGAE,78,118-128. |
MLA | Beaver, John R.,et al."Environmental factors influencing the quantitative distribution of microcystin and common potentially toxigenic cyanobacteria in US lakes and reservoirs".HARMFUL ALGAE 78(2018):118-128. |
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