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Grazers Avoid Toxic Algae - NCCOS Coastal Science Website
coastalscience.noaa.gov/news/grazers-avoid-toxic-algae/
Can grazers help reduce the frequency and abundance of harmful algal blooms? We are considerably closer to the answer to this “top down control” ...
Complex Control of Cyanobacterial Blooms in Lake Erie by Small ...
coastalscience.noaa.gov/news/complex-control-of-cyanobacterial-blooms-in-lake-erie-by-small-zooplankton-and-nutrients/
Therefore, this project shows the potential of smaller size zooplankton to biologically control toxic cyanobacteria blooms by grazing. However ...
Size-dependent top-down control on phytoplankton growth by ...
coastalscience.noaa.gov/data_reports/size-dependent-top-down-control-on-phytoplankton-growth-by-microzooplankton-in-eutrophic-lakes/
We hypothesized that the grazing on phytoplankton by the microzooplankton community is size-dependent and, therefore, the top-down control on ...
[PDF] NEW NCCOS FY18 HARMFUL ALGAL BLOOM PROGRAM AWARDS
cdn.coastalscience.noaa.gov/page-attachments/funding/NCCOS_FY18_HAB_Awards_Summaries_090718.pdf
The goal of this project is to determine the controls of grazer-induced toxin production on cell toxin content and cell growth of Alexandrium ...
Modeling Factors that Contribute to Harmful Algal Blooms
coastalscience.noaa.gov/project/modeling-factors-harmful-algal-blooms/
Ecosystem disruptive algal blooms often are caused by toxic or unpalatable algal species that tend to decrease herbivore grazing rates. This decrease ...
Complex Interactions Between Harmful Phytoplankton and Grazers ...
coastalscience.noaa.gov/project/interactions-harmful-phytoplankton-grazers-zebra-mussel-nutrient-gradients/
Results show the relationship between nutrient loading, herbivore grazing, and HABs is very different in habitats invaded by zebra mussels. The ...
Mesozooplankton and Microzooplankton Grazing During Cyanobacterial ...
coastalscience.noaa.gov/data_reports/mesozooplankton-and-microzooplankton-grazing-during-cyanobacterial-blooms-in-the-western-basin-of-lake-erie/
From 2005 to 2007, grazing rates of cultured (Daphnia pulex) and natural assemblages of mesozooplankton and microzooplankton on five autotrophic ...
Are Growth and Toxicity of the Dinoflagellate Alexandrium Controlled by ...
coastalscience.noaa.gov/project/are-growth-and-toxicity-of-dinoflagellate-alexandrium-controlled-by-grazer-induced-defense/
Thus, cell growth and mortality due to grazing are the two main biological determinants of bloom dynamics in Alexandrium. Hence, it is essential to ...
Ecosystem disruptive algal blooms of the brown tide species ...
coastalscience.noaa.gov/data_reports/ecosystem-disruptive-algal-blooms-of-the-brown-tide-species-aureococcus-anophagefferens-and-aureoumbra-lagunensis/
These models suggest that brown tides are promoted by positive feedback mechanisms involving the ability of these algae to grow competitively at low ...
Interactions among nutrients, microalgae, and algal grazers regulate ...
coastalscience.noaa.gov/news/interactions-among-nutrients-microalgae-and-algal-grazers-regulate-the-occurrence-and-severity-of-ecosystem-disruptive-algal-blooms/
These factors include competition betweenharmful and beneficial algal species for growth-limiting nutrients, different grazing mortalityrates for ...
Toxicity of the Dinoflagellate Alexandrium Controlled by Grazers
coastalscience.noaa.gov/news/toxicity-of-the-dinoflagellate-alexandrium-controlled-by-grazers/
A new study supported by NCCOS shows that the presence of zooplankton grazers dramatically increases toxin production in the marine dinoflagellate ...
Zooplankton community grazing impact on a bloom of Alexandrium ...
coastalscience.noaa.gov/data_reports/zooplankton-community-grazing-impact-on-a-bloom-of-alexandrium-fundyense-in-the-gulf-of-maine/
The inverse relationship between grazing impact and A. fundyense abundance implies that grazing may be capable of retarding bloom development at low ...
Detecting copepod grazing on low-concentration populations of ...
coastalscience.noaa.gov/data_reports/detecting-copepod-grazing-on-low-concentration-populations-of-alexandrium-fundyense-using-pcr/
Zooplankton grazing is often a significant loss term for phytoplankton populations, including harmful algae, impacting the development and decline of ...
Programmed Cell Death and the Decline of Harmful Algal Blooms
coastalscience.noaa.gov/news/programmed-cell-death-and-the-decline-of-harmful-algal-blooms/
All phytoplankton blooms decline for a variety of reasons – nutrient depletion, zooplankton grazing, virus infections, sedimentation – but programmed ...
Research Gaps Identified to Improve Future Harmful Algal Bloom ...
coastalscience.noaa.gov/news/research-gaps-identified-improve-future-harmful-algal-bloom-forecasts/
The researchers concludedthat current research strategies do not adequately address the basic linkages between temperature change, stratification ...
Causes and Consequences of Cell Death in the Toxic Dinoflagellate ...
coastalscience.noaa.gov/project/causes-and-consequences-of-cell-death-in-the-toxic-dinoflagellate-alexandrium-tamarense/
The general assumption is that grazing is the main source of mortality for any phytoplankton species. However, bacteria, viruses, and parasites could ...
Why Nutrient-Enriched Waters Favor Large Single-Cell Algae
coastalscience.noaa.gov/news/nutrient-enriched-waters-favor-large-single-cell-algae/
Recent research supportsthat zooplankton grazing in high-nutrient waters promotes the growth of largerphytoplankton over smaller species, creating a ...
Life and Death of a Karenia Bloom in the Western Gulf of Mexico
coastalscience.noaa.gov/project/life-and-death-of-a-karenia-bloom/
Observations and experiments commence at bloom initiation and continue through termination, including analysis of nutrients, microzooplankton grazing ...
NCCOS Research Explores New Approaches to Decoding Brown Tide in Long ...
coastalscience.noaa.gov/news/nccos-research-explores-new-approaches-to-decoding-brown-tide-in-long-island-estuaries/
They conducted experiments to explore how changes in environmental factors, like levels of nutrients or exposure to zooplankton grazing, can alter ...
Tiny yet Toxic Dinoflagellate Karlodinium veneficum
coastalscience.noaa.gov/news/little-dinoflagellate-big-toxicity/
Karlotoxin production appears to be used primarily for prey capture but grazing deterrence is an additional advantage. Researchers have identified ...