The advent of moored technologies for harmful algal bloom (HAB) detection with real-time telemetry facilitates opportunistic and adaptive sampling of key bloom processes that have as yet evaded us in traditional seagoing survey mode. We propose to use data streams from Environmental Sample Processor (ESP) moorings to mobilize rapid-response surveys during key phases of two types of HABs in the Gulf of Maine: Alexandrium fundyense and Pseudo-nitzschia spp. For A. fundyense, sampling will focus on bloom decline, as the mechanisms that terminate these blooms are as yet undocumented in the field. The dynamics of Pseudo-nitzschia spp. remain largely uncharacterized in this region, and rapid response sampling will accordingly be targeted amongst the various phases of initiation, development, and decline. Laboratory experiments will be conducted with Pseudo-nitzschia isolates collected from the Gulf of Maine to measure their vital rates and dependencies on environmental conditions. Knowledge gained from both field and laboratory studies will be incorporated into models of bloom dynamics to improve predictive capabilities.
Blooms of the toxic dinoflagellate A. fundyense occur regularly in the Gulf of Maine, posing a threat to human health via Paralytic Shellfish Poisoning (PSP). Domoic acid produced by diatoms of the genus Pseudonitzschia can cause Amnesic Shellfish Poisoning (ASP), an emerging threat in this region that is not yet routinely monitored. Understanding the factors that regulate blooms of these harmful algae is therefore of considerable economic and public health interest.
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|Butman, Bradford; Aretxabaleta, Alfredo L; Dickhudt, Patrick J et al. (2014) Investigating the importance of sediment resuspension in Alexandrium fundyense cyst population dynamics in the Gulf of Maine. Deep Sea Res Part 2 Top Stud Oceanogr 103:79-95|
|Pilskaln, C H; Hayashi, K; Keafer, B A et al. (2014) Benthic nepheloid layers in the Gulf of Maine and Alexandrium cyst inventories. Deep Sea Res Part 2 Top Stud Oceanogr 103:55-65|
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|Koch, F; Kang, Y; Villareal, T A et al. (2014) A novel immunofluorescence flow cytometry technique detects the expansion of brown tides caused by Aureoumbra lagunensis to the Caribbean Sea. Appl Environ Microbiol 80:4947-57|
|Anderson, Donald M; Keafer, Bruce A; Kleindinst, Judith L et al. (2014) Alexandrium fundyense cysts in the Gulf of Maine: long-term time series of abundance and distribution, and linkages to past and future blooms. Deep Sea Res Part 2 Top Stud Oceanogr 103:6-26|
|Anderson, Donald M; Couture, Darcie A; Kleindinst, Judith L et al. (2014) Understanding interannual, decadal level variability in paralytic shellfish poisoning toxicity in the Gulf of Maine: the HAB Index. Deep Sea Res Part 2 Top Stud Oceanogr 103:264-276|
|Kleindinst, Judith L; Anderson, Donald M; McGillicuddy Jr, Dennis J et al. (2014) Categorizing the severity of paralytic shellfish poisoning outbreaks in the Gulf of Maine for forecasting and management. Deep Sea Res Part 2 Top Stud Oceanogr 103:277-287|
|Deeds, Jonathan R; Petitpas, Christian M; Shue, Vangie et al. (2014) PSP toxin levels and plankton community composition and abundance in size-fractionated vertical profiles during spring/summer blooms of the toxic dinoflagellate Alexandrium fundyense in the Gulf of Maine and on Georges Bank, 2007, 2008, and 2010: 1. Toxin Deep Sea Res Part 2 Top Stud Oceanogr 103:329-349|
|McGillicuddy Jr, D J; Brosnahan, M L; Couture, D A et al. (2014) A red tide of Alexandrium fundyense in the Gulf of Maine. Deep Sea Res Part 2 Top Stud Oceanogr 103:174-184|
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