Archive for the 'Meetings' Category

Workshop on Durafet-based pH sensors highlights importance of collecting reference samples

Ocean pH sensor technology has advanced quickly over the last few years. This is predominately driven by the integration of Honeywell™ Durafet® pH electrodes in oceanographic sensor packages. Durafets sensors contain Ion Sensitive Field Effect Transistor (ISFET) technology, which produces highly precise pH measurements in seawater. Precision is better than 0.005 units pHT and stability of the calibration can be maintained for several months (Martz et al. 2010; Takeshita et al. 2014). These characteristics have made Durafet-based sensors popular among oceanographers and marine biologists alike.

Since 2010, multiple Durafet-based pH sensors have become commercially available. Sensors are currently used in estuarine, coastal, and deep-sea ecosystems, underway measurements, profiling floats, and laboratory-based ocean acidification experiments. Durafet-based sensors require specialized expertise for optimal operation and high-quality data acquisition (McLaughlin et al. 2017). The crux of data quality lies in the intricacies associated with calibration of these sensors. While commercial sensors have a factory calibration, this may not be accurate enough for certain marine applications (Figure 1). Most often, users need to perform a calibration using multiple, independent, seawater samples which are then analyzed for pH in the laboratory and used in data processing (Bresnahan et al. 2014). Using such reference samples for calibration, and following proper maintenance, a single SeaFET™ pH sensor can produce high-quality data for multiple years in a coastal environment (Kapsenberg et al. 2017a). Currently, data quality varies among user groups and is associated with experience level (McLaughlin et al. 2017). For this reason, hands-on training provides a beneficial supplement to recently published best practices (Bresnahan et al. 2014; Kapsenberg et al. 2017b; Rivest et al. 2016).

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‘Lessons from two high CO2 worlds’ symposium – abstract deadline extended and travel grants available

Abstract submission for the ‘Lessons from two high CO2 worlds – future oceans and intensive aquaculture’ symposium in Ponta Delgada, Azores, 10-12 April 2018, has been extended to Midnight (GMT) on 21 February 2018.

There is also an opportunity for students and early career scientists to apply for travel grants, ranging from £250 – £500, to support their attendance at the symposium. The deadline for travel grant application is 2 March 2018, and further information including eligibility criteria is available on the SEB website.

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Lessons from two high CO2 worlds – future oceans and intensive aquaculture

São Miguel, Azores, 10 – 12 April 2018

Registration and abstract submission now open. Deadline for abstract submission: 16 February 2018.

Exponentially rising CO2 (currently ~400 μatm) is driving climate change, and causing acidification of both marine and freshwater environments. Physiologists have long known that CO2 directly affects acid-base and ion regulation, respiratory function, and aerobic performance. More recently, many studies have demonstrated that elevated CO2 projected for end of this century (e.g. 800-1,000 μatm) has dramatic effects on behaviours linked to sensory stimuli (smell, hearing and vision), that have negative implications for fitness and survival. Some sectors of the aquaculture industry have been farming aquatic animals at extremely high CO2 levels (>10,000 μatm) long before the term “ocean acidification” was coined, with limited detrimental effects reported. It is vital to understand the physiological mechanisms behind this variability in resilience to high CO2. Potential explanations include: the relatively benign environment in aquaculture (abundant feed, disease and predator control); co-selection for CO2 -tolerance; high “control” CO2 levels in aquaculture studies. This symposium will highlight insights the two communities can offer from marine and freshwater settings. Bringing together climate change and aquaculture scientists will stimulate discussion on the direction of future research priorities and mitigation strategies to alleviate negative impacts of high CO2 on future aquatic ecosystems and the sustainable production of fish, invertebrates and algae in aquaculture.

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OA-relevant session at 3rd open science symposium on Western Pacific Ocean circulation and climate

Abstract submission deadline: 15 February 2018

May 8-10, 2018, Qingdao, China

The 3rd Open Science Symposium on Western Pacific Ocean Circulation and Climate (3rd OSS-2018) will be held on May 8-10, 2018 in Qingdao, China. This will provide a forum for oceanographers, meteorologists and climate scientists to exchange recent progresses in their study of the WPO circulation and climate and its generality/difference with other oceans, marine biogeochemistry and ecosystem, their variability, changes and impacts, to explore opportunities for international scientific collaboration, and to promote inter-disciplinary study in the WPO.

Session 5 is particularly relevant for the OA community.

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Ocean acidification relevant events at COP23

The 23rd session of the Conference of the Parties (COP 23) to the UN Convention on Climate Change (UNFCCC) has begun in Bonn, Germany. Below are events taking place at COP23 which are relevant to the OA community.

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OA session at the 2018 annual meeting of the Society for Integrative and Comparative Biology

The Society for Integrative and Comparative Biology (SICB) is hosting its Annual Meeting from January 3-7, 2018 in San Francisco, California. Below find more information on the Ocean Acidification Session taking place Sunday, 7 January, 13:45-15:15.

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4th International Symposium on the Effects of Climate Change on the World’s Oceans

With ICES, PICES, IOC and FAO as primary international sponsors, the 4th International Symposium on the Effects of Climate Change on the World’s Oceans will take place in Washington DC, 4-8 June 2018, and will have many sessions with relevance for the OA community. Featured in particular below is Session S3  “Carbon uptake, ocean acidification, and ecosystems and human impacts“, which has a special focus on OA.

Deadline for abstract submission is 15 December.

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Ocean acidification in the IPCC AR5 WG II

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