News

2018 Ocean Sciences Meeting

The 2018 Ocean Sciences Meeting will be held 11-16 February 2018 at the Oregon Convention Center, located at 777 NE Martin Luther King Jr Blvd, Portland, OR 97232. Cosponsored by AGU, ASLO, and TOS, the Ocean Sciences Meeting program will span a broad array of marine science topics.

Portland, Oregon’s largest city, sits on the Columbia and Willamette rivers, in the shadow of snow-capped Mount Hood. Portland is known for their eccentric locals, sophisticated yet cosmopolitan atmosphere and eco-friendly culture. It is the perfect venue for the 2018 Ocean Sciences Meeting.

Click here for further information on this meeting.


../common/calendar Start Date: 2/10/18

PIRATA 22

The PIRATA acronym, originally defined as “Pilot Research Moored Array in the Tropical Atlantic” in 1997, has been changed in 2008 to “Prediction and Research Moored Array in the Tropical Atlantic”. PIRATA is a multinational observation network, established to improve our knowledge and understanding of ocean-atmosphere variability in the tropical Atlantic. It is a joint project of Brazil, France and the United States of America. For more information, visit the main PIRATA web site, including data display and delivery.

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../common/calendar Start Date: 11/4/17

5th International Conference on Oceanography and Marine Biology

Theme: Contemporary challenges and innovative solutions for sustainable oceans

 

ConferenceSeries Ltd invites all the scholars from all over the world to attend and present their respective scientific research at ' 5th International Conference on Oceanography and Marine Biology October 18-20, 2017 Seoul, South Korea’ during October 18-20, 2017 Seoul, South Korea which includes prompt Keynote presentations, Oral talks, Poster presentations, Delegate views and Exhibitions.

Oceanography Congress is providing a global platform to discuss and learn about Marine Sciences, Marine Biology, Marine Geology, and Marine Oceanography, Marine ecology to exchange their knowledge, experience and research innovations. The aim of Marine Science Conferences is to create a platform for strong exchange of the recent advancement and technologies towards Marine Oceanography and Marine Biology.

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../common/calendar Start Date: 10/17/17

Cryptic oxygen cycling in anoxic marine zones

Abstract.

"Oxygen availability drives changes in microbial diversity and biogeochemical cycling between the aerobic surface layer and the anaerobic core in nitrite-rich anoxic marine zones (AMZs), which constitute huge oxygen-depleted regions in the tropical oceans. The current paradigm is that primary production and nitrification within the oxic surface layer fuel anaerobic processes in the anoxic core of AMZs, where 30–50% of global marine nitrogen loss takes place. Here we demonstrate that oxygenic photosynthesis in the secondary chlorophyll maximum (SCM) releases significant amounts of O2 to the otherwise anoxic environment. [...] "

Source: Proceedings of the National Academy of Sciences of the United States of America (PNAS)
Authors: Emilio Garcia-Robledo et al.
DOI: 10.1073/pnas.1619844114

Full article


Fossil site shows impact of early Jurassic's low oxygen oceans

Summary:

Using a combination of fossils and chemical markers, scientists have tracked how a period of globally low ocean-oxygen turned an Early Jurassic marine ecosystem into a stressed community inhabited by only a few species.

Source: Science Daily

Full article


Function of the High Seas and Anthropogenic Impacts Science Update 2012 - 2017

The Zoological Department of Oxford University has reviewed and synthesised major marine science findings which have been published since Rio+20 in 2012.

The purpose of this synthesis is to determine how our understanding of the ocean at an Earth System level, with a particular focus on the role of the high seas, has changed in the last five years.

Summary:

"During the last five years scientists have utilised novel technologies and methods to explore new locations and investigate both the fundamental processes of the ocean and the mounting anthropogenic impacts on the marine environment. Studies have highlighted the important functions that the high seas perform for the planet and have often focused on the complexity and interconnected nature of these processes."

Full report


Report: High seas in high danger as ecological tipping point nears

"As delegates convene at the United Nations to work out an international treaty to preserve the biodiversity of the high seas, a new report underscores the need to protect the remote ocean.

Scientists at Oxford University in the United Kingdom reviewed 271 research papers published between 2012 and 2017 and synthesized the latest data on the impact of climate change, fishing and pollution on the high seas. Their findings are not encouraging: Even the most distant reaches of the ocean are suffering from chemical and plastic contamination, a loss of biodiversity and the consequences of rising temperatures. [...]"

Source: UPI

Full article


Differential effects of nitrate, ammonium, and urea as N sources for microbial communities in the North Pacific Ocean

Abstract.

"Nitrogen (N) is the major limiting nutrient for phytoplankton growth and productivity in large parts of the world's oceans. Differential preferences for specific N substrates may be important in controlling phytoplankton community composition. To date, there is limited information on how specific N substrates influence the composition of naturally occurring microbial communities. We investigated the effect of nitrate ( math formula), ammonium ( math formula), and urea on microbial and phytoplankton community composition (cell abundances and 16S rRNA gene profiling) and functioning (photosynthetic activity, carbon fixation rates) in the oligotrophic waters of the North Pacific Ocean. [...]"

Source: Limonology and Oceanography
Authors: I.N. Shilova et al.
DOI: 10.1002/lno.10590

Full article


Project: Kelp Forest Array

The Kelp Forest Array (KFA) is a state-of-the-art cabled platform for observational and experimental science aimed at monitoring and understanding local impacts of global climate change. Increasing climate change and ocean acidification pressures require the establishment of long-term, baseline monitoring methods to document how a currently healthy system changes and to understand effects of climate change in relation to this natural variability. Current monitoring practices limit resolution and longevity of baseline data sets.

 

Full article


Evidence for rapid weathering response to climatic warming during the Toarcian Oceanic Anoxic Event

Abstract.

"Chemical weathering consumes atmospheric carbon dioxide through the breakdown of silicate minerals and is thought to stabilize Earth’s long-term climate. However, the potential influence of silicate weathering on atmospheric pCO2 levels on geologically short timescales (103–105 years) remains poorly constrained. Here we focus on the record of a transient interval of severe climatic warming across the Toarcian Oceanic Anoxic Event or T-OAE from an open ocean sedimentary succession from western North America. [...]"

Source: Scientific Reports
Authors: Theodore R. Them et al.
DOI: 10.1038/s41598-017-05307-y

Full article


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