Archive for the 'Presentations' Category

Coastal acidification adaption and mitigation strategies, webinars

Ocean and coastal acidification (OCA) threatens marine ecosystems and the coastal communities that rely on them. Actions and best practices to adapt to and mitigate impacts of OCA, such as buffering sediments, restoring seagrasses and conserving refugia is an area of active research. Hear from five speakers about strategies to mitigate impacts of OCA on coral reefs and shellfish resources.

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IGS global seminar series: glacial water impacts on the chemical characteristics of sea ice and seawater and ocean acidification in Svalbard Fjords

Speaking: Agneta Fransson, Norwegian Polar Institute, Oslo, Norway

Event Type: Webinars and Virtual Events

When: 9 December 2020

Where: Online: 12:00 pm AKST, 4:00 pm EST

Summary
International Glaciological Society Global Seminar:

Speaking: Agneta Fransson, Norwegian Polar Institute, Oslo, Norway, “Glacial Water Impacts on the Chemical Characteristics of Sea Ice and Seawater and Ocean Acidification in Svalbard Fjords”.

Continue reading ‘IGS global seminar series: glacial water impacts on the chemical characteristics of sea ice and seawater and ocean acidification in Svalbard Fjords’

Presentation: Ocean acidification on the Great Barrier Reef: the future is now

Thursday 26th of November 11:00 to 12:00hrs (AEST)

https://jcu.zoom.us/j/88350515490 Password: 730762

Abstract:Ocean acidification, the increase in seawater CO2 with all its associated consequences, is relatively well understood in open oceans. In shelf seas such as the Great Barrier Reef, processes are much less understood, due to complex interactions with water quality and biological processes. I will show new data how ocean acidification has been progressing in the Great Barrier Reef, and its direct and indirect effects on coral reefs of the GBR, including shifts from corals to seaweed, impaired coral recruitment, and increasing bioerosion. Our new data from the Great Barrier Reef suggest that functional changes are already occurring, measurably affecting coralline algae, and coral recruitment and promoting macroalgae. Although most reefs are still net accreting, some reefs in marginal locations and high latitudes have started to dissolve in winter. The future integrity of GBR reefs under increasing ocean acidification will depend on their specific biophysical properties, and effective mitigation of the cumulative stressors from nutrient pollution. Unlike a clean-up of water quality, OA is irreversible on time scales of thousands of years, and there is no latitudinal escape, re-emphasising the imperative for rapid action on atmospheric CO2 pollution.

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Virtual ASLO awards reception on 1 Dec

The ASLO Zoom Virtual Awards Reception will take place on Tuesday, December 1 from 12:00 – 1:00 pm US EST.

ASLO Awards Chair Amina Pollard will introduce each of the awardees with a brief summary of their achievements. The award talks they would have presented in Madison are being pre-recorded and will be posted on our YouTube channel prior to the event for you to watch at your leisure (the two talks from OSM are already posted). Following the group introduction, there will be breakout rooms for each award winner for some informal networking time.

Register for the event and/or leave a message of congratulations for the award winners at: https://www.aslo.org/2020-awards-virtual-reception/

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Next generation pH sensors

Since the beginning of the industrial revolution, the ocean has become increasingly acidic due to uptake of atmospheric CO2. There is an urgent need for in situ pH measurements to provide a high spatial and temporal resolution. However, today’s ship-based measurements cannot achieve this. While the introduction of intelligent and low-cost autonomous underwater vehicles (AUVs) provide the platform to obtain the data, the development of small, reliable pH sensors for deployment on these smaller AUV’s lags behind. ANB Sensors Ltd have identified and filed patents for a disruptive, enabling technology which allows for pH measurement in demanding aqueous media. ANB is running an INNOVATE UK funded project to translate its sensing technology into a system suitable for AUV deployment. This presentation highlights the solid state chemistry behind the concept, details results from recent field trials, and shows how the sensing technology is being adapted to AUV systems for trials.

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Recent event: the role of the ocean on climate change and sea level rise

On October 8th, ocean industry leaders, academics, and UN officials spoke with us on topics such as the role of oceans in carbon sequestration, ocean acidification, geoengineering, marine pollution, and sea-level rise. 

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How ocean acidification may alter natural selection: a case study of California grunion (seminar)

Date & Time: Friday, November 13, 2020 at 3:30-4:30 p.m.

Location: Zoom Webinar

Presenter: Darren Johnson, California State University at Long Beach

Zoom link: https://hawaii.zoom.us/j/97898020974

Passcode: 131665

Please contact mbiograd(at)hawaii.edu before the day of the seminar to request dial-in instructions.

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Communicating OA science to policy makers (webinar recording)

On October 20 and 21, the OA Alliance and The Ocean Foundation co- hosted a Communications Workshop for OA Scientists.

This virtual workshop provided an overview of best practices in communicating OA science to decision and policy makers and other stakeholders, drawing upon lessons learned and experiences from our national and subnational government members.  It also described how governments are increasingly tackling ocean acidification through legislation, climate action strategies and other international frameworks and specifically—exploring how scientists and in-region stakeholders can most effectively contribute to those processes.

This workshop was meant for scientists working on ocean acidification who are interested in learning how to interact with policymakers.

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Event: how ocean acidification changed the Gulf of Alaska seascape

Tuesday, Oct 27, 2020 at 11:00 am–12:00 pm

Join IARC researcher Claudine Hauri for a webinar, “Learning from a regional ocean model: How ocean acidification has changed the seascape of the Gulf of Alaska“. This is a chance to see Claudine’s new interactive visualization tool which covers many oceanographic parameters including ocean acidification. Learn more about the ocean model and tool.

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Webinar: Gene regulatory response to end-century temperature and pCO2 in post-larval American lobster

When: Wednesday October 9, 2019 at 1:00 PM ET

Presented by Richard Wahle, PhD. and Maura Niemisto of the University of Maine

Anthropogenic carbon released into the atmosphere is driving rapid, concurrent increases in temperature and acidity across the world’s oceans, most prominently in northern latitudes. The geographic range of the iconic American lobster (Homarus americanus) spans a steep thermal gradient and one of the most rapidly warming ocean environments. Understanding the interactive effects of ocean warming and acidification on this species’ vulnerable early life stages is important to predict its response to climate change on a life stage-specific and population level. This study investigated the interactive effects of ocean warming and acidification on the gene expression response of the planktonic post-larval lobster from southern New England. Using a full factorial experimental design, lobsters were raised in ambient and elevated pCO2 concentrations (400 ppm, 1200 ppm) and temperatures (16°C and 19°C). Overall, we identified 1,108 transcripts that were differentially expressed across treatments, several of which were related to stress response and shell formation. When temperature alone was elevated (19°C), larvae downregulated genes related to cuticle development; when pCO2 alone was elevated (1200 ppm), larvae upregulated chitinase as well as genes related to stress response and immune function. The joint effects of end-century stressors (19°C, 1200 ppm) resulted in the upregulation of those same genes, as well as cellulase, and the downregulation of calcified cuticle proteins, and a greater upregulation in genes tied to immune response and functioning. These first results of the impact of varying conditions on larval lobster gene expression suggest the existence of mechanisms to respond to stressors resulting from a rapidly changing environment.

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