Controlling harmful cyanobacterial blooms in a world experiencing anthropogenic and climatic-induced change

Paerl, Hans W.; Hall, Nathan S.; Calandrino, Elizabeth S.

doi:10.1016/j.scitotenv.2011.02.001

Cited by 916 publications

(534 citation statements)

References 60 publications

Supporting

Mentioning

486

Contrasting

Unclassified

Order By: Relevance

“…Butterwick et al, 2005;Watkinson et al, 2005). This provides a distinct advantage for harmful cyanobacteria blooms under nutrient-enriched conditions, when competition with eukaryotic primary producers, including diatoms, chlorophytes, cryptophytes and dinoflagellates, can be intense (Paerl et al, 2011). Furthermore, intense light absorption by surface cyanobacterial blooms leads to higher temperatures within the bloom, resulting in a positive feedback loop (Ibelings et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

Mathematical modeling of Microcystis aeruginosa growth and [D-Leu1] microcystin-LR production in culture media at different temperatures

et al. 2017

View full text Add to dashboard Cite

A B S T R A C TThe effect of temperature (26 C, 28 C, 30 C and 35 C) on the growth of native CAAT-3-2005 Microcystis aeruginosa and the production of Chlorophyll-a (Chl-a) and Microcystin-LR (MC-LR) were examined through laboratory studies. Kinetic parameters such as specific growth rate (m), lag phase duration (LPD) and maximum population density (MPD) were determined by fitting the modified Gompertz equation to the M. aeruginosa strain cell count (cells mL À1 ). A 4.8-fold increase in m values and a 10.8-fold decrease in the LPD values were found for M. aeruginosa growth when the temperature changed from 15 C to 35 C. The activation energy of the specific growth rate (Em) and of the adaptation rate (E 1 /LPD) were significantly correlated (R 2 = 0.86). The cardinal temperatures estimated by the modified Ratkowsky model were minimum temperature = 8.58 AE 2.34 C, maximum temperature = 45.04 AE 1.35 C and optimum temperature = 33.39 AE 0.55 C.Maximum MC-LR production decreased 9.5-fold when the temperature was increased from 26 C to 35 C. The maximum production values were obtained at 26 C and the maximum depletion rate of intracellular MC-LR was observed at 30-35 C. The MC-LR cell quota was higher at 26 and 28 C (83 and 80 fg cell À1 , respectively) and the MC-LR Chl-a quota was similar at all the different temperatures (0.5-1.5 fg ng À1 ).The Gompertz equation and dynamic model were found to be the most appropriate approaches to calculate M. aeruginosa growth and production of MC-LR, respectively. Given that toxin production decreased with increasing temperatures but growth increased, this study demonstrates that growth and toxin production processes are uncoupled in M. aeruginosa. These data and models may be useful to predict M. aeruginosa bloom formation in the environment.

show abstract

Section: Discussionmentioning

confidence: 99%

Mathematical modeling of Microcystis aeruginosa growth and [D-Leu1] microcystin-LR production in culture media at different temperatures

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Warmer air temperatures lead to more intense surface heating and a greater density difference between warm epilimnetic and cold hypolimnetic water zones (i.e., increased thermal stability; Paerl et al 2011, Posch et al 2012). Consequently, Factors leading to algal scum formation stratification becomes more intense, vertical mixing is suppressed, and the period of seasonal stratification lengthens into the fall months.…”

Section: Discussionmentioning

confidence: 99%

Potential factors leading to the formation of cyanobacterial scums in a mesotrophic softwater lake in Ontario, Canada

Persaud¹,

Paterson²,

Ingram³

et al. 2014

Lake and Reservoir Management

View full text Add to dashboard Cite

“…N and P) as a result of anthropogenic activities (Howarth, 2008;Peñuelas et al, 2013;Turner and Rabalais, 1994). Increasing watershed nutrient export has caused eutrophication, harmful algal blooms and other negative environmental effects in coastal waters around the world (Anderson et al, 2008;Billen and Garnier, 2007;Davidson et al, 2014;Paerl et al, 2011;Smith et al, 1999). Riverine export of dissolved nutrients (especially N) from Asian watersheds has been predicted to continue to increase through 2030 .…”

Section: Introductionmentioning

confidence: 99%

Modeling increased riverine nitrogen export: Source tracking and integrated watershed-coast management

Yan

Chen

et al. 2015

Marine Pollution Bulletin

View full text Add to dashboard Cite

The global NEWS model was calibrated and then used to quantify the long term trend of dissolved inorganic nitrogen (DIN) export from two tributaries of Jiulong River (SE China). Anthropogenic N inputs contributed 61-92% of river DIN yield which increased from 337 in 1980s to 1662 kg N km −2 yr −1 in 2000s for the North River, and from 653 to 3097 kg N km −2 yr −1 for the West River. North River and West River contributed 55% and 45% respectively of DIN loading to the estuary. Rapid development and poor management driven by national policies were responsible for increasing riverine N export. Scenario analysis and source tracking suggest that reductions of anthropogenic N inputs of at least 30% in the North River (emphasis on fertilizer and manure) and 50% in the West River (emphasis on fertilizer) could significantly improve water quality and mitigate eutrophication in both river and coastal waters.

show abstract

Controlling harmful cyanobacterial blooms in a world experiencing anthropogenic and climatic-induced change

Cited by 916 publications

References 60 publications

Mathematical modeling of Microcystis aeruginosa growth and [D-Leu1] microcystin-LR production in culture media at different temperatures

Mathematical modeling of Microcystis aeruginosa growth and [D-Leu1] microcystin-LR production in culture media at different temperatures

Potential factors leading to the formation of cyanobacterial scums in a mesotrophic softwater lake in Ontario, Canada

Modeling increased riverine nitrogen export: Source tracking and integrated watershed-coast management

Contact Info

Product

Resources

About