Interactive effects of phosphorus and zooplankton grazing on cyanobacterial blooms in a shallow temperate lake

Rose, Vanessa; Rollwagen‐Bollens, Gretchen; Bollens, Stephen M.

doi:10.1007/s10750-016-3011-4

Cited by 22 publications

(16 citation statements)

References 66 publications

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“…An explicit test of the interactions between copepod grazing and nutrient (PO 4 -P) addition on cyanobacterial bloom dynamics in Vancouver Lake confirmed many of our interpretations from earlier, separate experiments [49]. We found that phytoplankton growth in the early summer was limited by PO 4 -P availability, but that in the weeks following the height of the bloom, phytoplankton growth rates were likely reduced by the grazing of microzooplankton (ciliates and dinoflagellates).…”

Section: The Role Of Zooplankton Grazing and Predation On Cyanobactersupporting

confidence: 84%

“…We conducted five grazing and nutrient addition incubation experiments in Vancouver Lake from July to October 2013, using the highly abundant cyclopoid copepod Acanthocyclops robustus as the grazer and PO 4 as the added nutrient. Copepods and surface water were collected from Vancouver Lake as described above for incubation experiments (for complete details, see Rose et al [49]).…”

Section: Experiments To Measure the Interaction Of Nutrients And Copementioning

confidence: 99%

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Beyond Eutrophication: Vancouver Lake, WA, USA as a Model System for Assessing Multiple, Interacting Biotic and Abiotic Drivers of Harmful Cyanobacterial Blooms

Rollwagen‐Bollens

Lee

Rose

et al. 2018

Water

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Eutrophication of lakes and reservoirs has contributed to an increase in the magnitude and frequency of harmful cyanobacterial blooms; however, the interactive effects of nutrient availability (eutrophication) and other abiotic and biotic drivers have rarely been comprehensively studied in the field. We undertook an eight-year (2005-2013) research program that assessed the interaction of multiple factors driving cyanobacterial blooms in Vancouver Lake, a large, shallow eutrophic lake in Washington, USA. Our program consisted of nearly continuous monthly or weekly monitoring of water quality and plankton community composition over eight years, as well as multiple zooplankton grazing experiments over three years. We found a relatively consistent seasonal succession of phytoplankton and zooplankton assemblages, and a pattern of interacting factors influencing cyanobacterial bloom dynamics. Typically, a combined effect of decreased dissolved inorganic nitrogen (N), a sudden increase of dissolved inorganic phosphorus (P), and a cascading effect of zooplankton grazing created a 'perfect storm' of conditions that promoted the rapid proliferation of cyanobacteria over the two to three weeks before a bloom. At the blooms' peaks, cyanobacterial carbon biomass reached as high as 20 µg L −1 , with total [chl a] often exceeding 750 µg L −1. In the weeks following the blooms' peaks, [PO 4-P] and [NH 4-N] dropped and copepod feeding rates fell to near zero, whereas microzooplankton grazing rates reached their maxima. Microzooplankton grazing impact, combined with low nutrient availability, then drove down cyanobacteria abundance. Vancouver Lake serves as a model for understanding multiple, interacting drivers of cyanobacterial bloom dynamics in shallow, temperate lakes, and is therefore an important system in which to investigate new questions related to the science and management of harmful algal blooms.

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Section: The Role Of Zooplankton Grazing and Predation On Cyanobactersupporting

confidence: 84%

Section: Experiments To Measure the Interaction Of Nutrients And Copementioning

confidence: 99%

Beyond Eutrophication: Vancouver Lake, WA, USA as a Model System for Assessing Multiple, Interacting Biotic and Abiotic Drivers of Harmful Cyanobacterial Blooms

Rollwagen‐Bollens

Lee

Rose

et al. 2018

Water

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“…Nitrogen and phosphorus concentrations in most estuaries are heavily influenced by anthropogenic sources such as agricultural fertilizers and/or wastewater treatment (Orive et al 2012). In the CRE, coastal upwelling/downwelling combined with estuarine circulation can also be an important source (or sink) of nutrients, depending on the season (Whitney et al 2005). Increased nutrient concentrations (i.e., eutrophication) can result in enhanced phytoplankton growth rates.…”

Section: The Crescendo Projectmentioning

confidence: 99%

Limnology and Oceanography Bulletin Volume 28 Number 2 May 2019 41–81

2019

Limnology & Oceanogr Bull

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“…Of particular concern is the potential for flow impoundment imposed by dams to enhance cyanobacteria abundance (Paerl & Paul, ). Cyanobacterial blooms are a current problem for freshwater systems globally and have been noted in many impounded riverine (Guo et al, ; Oliver, Dahlgren, & Deas, ; Remmal, Hudon, Hamilton, Rondeau, & Gagnon, ) and adjacent floodplain lake ecosystems (Rollwagen‐Bollens, Lee, Rose, & Bollens, ; Rose, Rollwagen‐Bollens, & Bollens, ). Altered thermal regimes in reservoirs that result in warmer waters and stratification may increase the likelihood of cyanobacterial dominance (Cha, Cho, Lee, Kang, & Kim, ; Paerl & Paul, ).…”

Section: Introductionmentioning

confidence: 99%

The effects of run‐of‐river dam spill on Columbia River microplankton

Rose

Rollwagen‐Bollens

Bollens

et al. 2019

River Research & Apps

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Dams, increasingly common in riverine systems worldwide, are particularly prevalent on the Columbia River (CR) in the United States. Hydroelectric projects, including both storage and run-of-river (i.e., minimal storage) structures, on the mainstem CR highly manage water flow, often by releasing water over (rather than through) dams as "spill." To test the effects of run-of-river dam spill on microplankton abundance and composition, we sampled above and below two dams in the lower CR before and during spill conditions in spring 2016 and during and after spill conditions in late summer 2007. We tested the effects of location (i.e., above vs. below dams), spill condition (i.e., before, during, and after spill), and their interaction on microplankton abundance. Generally, diatoms were most abundant during springtime, whereas cyanobacteria were most abundant in late summer. Most taxa were not significantly different in abundance above and below dams, regardless of spill status; although cyanobacteria abundance was marginally higher below dams in summer 2007 (p = .04). Abundances of all taxa were significantly different between pre-spill and spill periods in spring 2016, whereas only diatom and flagellate abundances were significantly different between spill and post-spill periods in summer 2007. We conclude that spill conditions may influence microplankton abundance, but are not likely to affect microplankton communities on either side of run-of-river dams on the CR. This is important information for dam managers concerned about ecosystem impacts of spill.

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Interactive effects of phosphorus and zooplankton grazing on cyanobacterial blooms in a shallow temperate lake

Cited by 22 publications

References 66 publications

Beyond Eutrophication: Vancouver Lake, WA, USA as a Model System for Assessing Multiple, Interacting Biotic and Abiotic Drivers of Harmful Cyanobacterial Blooms

Beyond Eutrophication: Vancouver Lake, WA, USA as a Model System for Assessing Multiple, Interacting Biotic and Abiotic Drivers of Harmful Cyanobacterial Blooms

Limnology and Oceanography Bulletin Volume 28 Number 2 May 2019 41–81

The effects of run‐of‐river dam spill on Columbia River microplankton

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