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Number of responses from webinar speakers, attendees and google forms binned by category of response, where blue bars represent expert recommendations, orange bars represent attendee interest, and pink bars represent attendee form comments, respectively.
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The National Oceanic and Atmospheric Administration (NOAA) Ocean Acidification Program (OAP) and NOAA National Centers for Coastal Ocean Science (NCCOS) Competitive Research Program (CRP) are working to better understand interactions between stressors such as harmful algal blooms (HABs) and coastal and ocean acidification (OA). Both HABs and OA are...
Contexts in source publication
Context 1
... webinars. Data from webinar transcripts, questions, comment boxes and Google survey forms were binned into categories and analyzed to determine reoccurring themes. The importance of field studies, observations, modeling, multi-stressor studies (especially as it relates to warming, hypoxia and eutrophication) and trophic interactions (blue bars in Fig. 1) were highlighted. Comments and questions from the audience emphasized these as well, along with the need for management tools (orange bars, Fig. 1). The Google survey form responses, although fewer in number overall, also highlighted observations, multi-stressor evaluations and lab and field experiments including impacts of OA to ...
Context 2
... themes. The importance of field studies, observations, modeling, multi-stressor studies (especially as it relates to warming, hypoxia and eutrophication) and trophic interactions (blue bars in Fig. 1) were highlighted. Comments and questions from the audience emphasized these as well, along with the need for management tools (orange bars, Fig. 1). The Google survey form responses, although fewer in number overall, also highlighted observations, multi-stressor evaluations and lab and field experiments including impacts of OA to toxicity (pink bars, Fig. 1). Mya Sharpe stressed that outreach and education activities are important even though they did not emerge as a major ...
Context 3
... highlighted. Comments and questions from the audience emphasized these as well, along with the need for management tools (orange bars, Fig. 1). The Google survey form responses, although fewer in number overall, also highlighted observations, multi-stressor evaluations and lab and field experiments including impacts of OA to toxicity (pink bars, Fig. 1). Mya Sharpe stressed that outreach and education activities are important even though they did not emerge as a major category based on this analysis. This may reflect the fact that there are so few studies of OA and HABs together, so it is difficult to know what and how to message with regard to risk. There is also a need to bring a ...
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Citations
... Cyanobacteria also have excellent CCMs under elevated pH conditions (Burnap et al., 2015;Coleman, 1991;Mangan & Brenner, 2014), affording them continued access to CO 2 during active blooms using carbonic anhydrases and bicarbonate transporters (Kaplan et al., 1998;Kupriyanova & Pronina, 2011). While cyanoHABs have been studied in the context of elevated pH, there has been a growing emphasis regarding how these high pH, carbon-limited conditions affect phytoplankton beyond cyanobacteria (Turner et al., 2021;Wilhelm et al., 2020;Zepernick et al., 2021). Alkaline pH levels benefit Microcystis spp. ...
Billions of years ago, the Earth's waters were dominated by cyanobacteria. These microbes amassed to such formidable numbers, they ushered in a new era—starting with the Great Oxidation Event—fuelled by oxygenic photosynthesis. Throughout the following eon, cyanobacteria ceded portions of their global aerobic power to new photoautotrophs with the rise of eukaryotes (i.e. algae and higher plants), which co‐existed with cyanobacteria in aquatic ecosystems. Yet while cyanobacteria's ecological success story is one of the most notorious within our planet's biogeochemical history, scientists to this day still seek to unlock the secrets of their triumph. Now, the Anthropocene has ushered in a new era fuelled by excessive nutrient inputs and greenhouse gas emissions, which are again reshaping the Earth's biomes. In response, we are experiencing an increase in global cyanobacterial bloom distribution, duration, and frequency, leading to unbalanced, and in many instances degraded, ecosystems. A critical component of the cyanobacterial resurgence is the freshwater‐marine continuum: which serves to transport blooms, and the toxins they produce, on the premise that “water flows downhill”. Here, we identify drivers contributing to the cyanobacterial comeback and discuss future implications in the context of environmental and human health along the aquatic continuum. This Minireview addresses the overlooked problem of the freshwater to marine continuum and the effects of nutrients and toxic cyanobacterial blooms moving along these waters. Marine and freshwater research have historically been conducted in isolation and independently of one another. Yet, this approach fails to account for the interchangeable transit of nutrients and biology through and between these freshwater and marine systems, a phenomenon that is becoming a major problem around the globe. This Minireview highlights what we know and the challenges that lie ahead.
