Home / Meetings / IMBER Special Sessions / TOS/ASLO/AGU 2012 Ocean Sciences Meeting (20-24 Feb. 2012, Salt Lake City, Utah, USA)

TOS/ASLO/AGU 2012 Ocean Sciences Meeting (20-24 Feb. 2012, Salt Lake City, Utah, USA)

20
Feb
2012
TOS/ASLO/AGU 2012 Ocean Sciences Meeting (20-24 Feb. 2012, Salt Lake City, Utah, USA)

TOS/ASLO/AGU 2012 Ocean Sciences Meeting
Further info

IMBER involved in eight sessions:

'Early life history: new insights into the early life stages and reproductive dynamics of large marine vertebrates'

Session 124 (IMBER/CLIOTOP Working Group 1)

Organizers:

  •  Joel Llopiz, Woods Hole Oceanographic Institution, USA
  •  Barbara Muhling, University of Miami Rosenstiel School Cooperative Institute for Marine and Atmospheric Science, USA
  •  Kate Mansfield, Southeast Fisheries Science Center, NOAA/NMFS, USA
  •  Lesley Thorne, Duke University Marine Laboratory, Nicholas School of the Environment and Earth Sciences, USA

Large marine vertebrates, whether bony fishes, sharks, mammals, sea turtles, or birds, play critical roles in the functioning of marine ecosystems. Since the maintenance or rebuilding of large marine vertebrate populations is highly dependent upon successful reproductive events and the survival of the early life stages, the understanding of these processes is critical for effective management and conservation efforts. For many of these long-lived species, the ‘lost years’ during the early life stages (part or all of the juvenile stage, and including the larval stage for bony fishes) have been distinctly understudied. Yet, a recent increase in efforts is shedding new light on the early life stages of large marine vertebrates, as well as their reproduction. Examples of such research include the mapping of reproductive areas in relation to oceanographic conditions, understanding the processes influencing reproductive output, and investigating how the survival and behavior of early life stages vary with biotic and abiotic conditions. The comparative approach of bringing together knowledge and perspectives gained from studying this taxonomically broad but important group of organisms should provide greater insight into general patterns and processes influencing the survival and conservation of the world’s large marine vertebrates.

'Influences of environmental variability on top predator distribution, abundance and behavior'

Session 136 (IMBER/CLIOTOP Working Group 2)

Organizers: Daniel Palacios, Mark Baumgartner, Steven Bograd, Elliott Hazen and George Shillinger

Patterns in top marine predator distribution, abundance and behavior are influenced by spatial and temporal variability in the ocean occurring at a variety of scales. From diel periodicity in diving and acoustic behavior to distribution shifts caused by climate change, variability in oceanographic conditions and prey distribution can have profound effects on top marine predators. This session seeks to bring together biologists, ecologists, oceanographers, and conservation practitioners who are using traditional and novel technologies (e.g. instrumentation, numerical and habitat modeling) to investigate relationships between environmental variability and the ecology and/or management of fishes, marine turtles, seabirds, pinnipeds and cetaceans. The session will focus on understanding the linkages between physical and biological processes across a variety of scales and on how these relationships can be used to manage and conserve top predator populations.

'The changing ocean carbon cycle: data syntheses, analyses and modeling'

Session 074 (SIC Working Group)

Organizers:

  • Nicolas Gruber, ETH Zurich, Switzerland
  • Dorothee Bakker, University of East Anglia, Norwich, UK
  • Chris Sabine, NOAA PMEL, Seattle, USA
  • Toste Tanhua, IfM-Geomar, Kiel, Germany

The ocean carbon cycle is changing at a rate whose magnitude and pattern we are only beginning to document, quantify, and understand. The uptake of anthropogenic CO2 from the atmosphere, climate fluctuations as well as long-term trends in ocean circulation and biology have led already to substantial changes in the ocean carbon cycle, with potentially larger changes looming ahead. In the last decade, substantial efforts have been undertaken to measure these changes, and a number of projects are underway to synthesize them and to put them into the context of climate variability and change (e.g. international synthesis activities associated with the SOLAS-IMBER carbon working groups and IOCCP, including SOCAT, CARINA and PACIFICA, for example, but also those undertaken in the context of RECCAP). This session aims to bring together the scientists working on these synthesis projects, but is open to all other scientists who are interested in developing an integrated view of how the ocean carbon cycle has changed in the recent decades. Of interest are data syntheses, analyses and modeling studies focusing on air-sea CO2 fluxes, changes in ocean surface and interior carbon properties, and how the changes in these realms are connected to each other.

'Shedding light on the dark ocean: advances in linking physical and microbial oceanography to biogeochemistry'

Session 158

Organizers:

  • Gerhard J. Herndl, Deptment of Marine Biology, University of Vienna, Austria
  • Alexander B. Bochdansky, Ocean, Earth and Atmospheric Sciences Old Dominion University, Norfolk, VA, USA
  • Javier Arístegui, Facultad de Ciencias del Mar, Universidad de Las Palmas de Gran Canaria, Spain
  • Dennis A. Hansell, rSMAS/MAC, University of Miami, Miami, FL, USA

In terms of volume, the dark ocean represents the largest oceanic subsystem. Long considered a rather homogeneous environment, new facts have emerged that demonstrate that the dark ocean harbours a similar diversity of microbes as the sunlit surface waters. Microbes with novel metabolic pathways have been identified both in meso- and bathypelagic waters. Albeit the metabolic activity of the dark ocean’s biota is generally low, the sheer volume of the dark ocean results in major uncertainties on its role in the oceanic carbon cycling. Major research initiatives have been launched recently to link physical oceanography, marine biogeochemistry and microbial oceanography, and to specifically address major enigmas regarding the significance of the dark ocean in the global element cycling. This session invites contributions from all oceanographic disciplines that address all aspects of the dark ocean in the biogeochemical cycling of elements including particle formation, flux and utilization in the deep ocean. Welcome are also contributions linking microbial community dynamics to biogeochemical fluxes using innovative approaches.

'Biogeochemical cycles of continental margins: drivers and impacts'

Session 031 (Continental Margins Working Group)

Organizers:

  • Antonio Mannino, NASA Goddard Space Flight Center, USA
  • Cécile Cathalot, Netherlands Institute for Ecology - Centre for Estuarine and Marine Ecology, The Netherlands
  • Marjorie Friedrichs, Virginia Institute of Marine Science, USA
  • Peter Griffith, NASA GSFC, USA

Biogeochemical cycling in the coastal zone is complex and poorly quantified, both on the mean and in terms of variability in response to a myriad of natural and anthropogenic drivers. Such complexity leads to substantial uncertainty in global and regional carbon budgets. This session focuses on recent progress in understanding coastal biogeochemical cycling, with emphasis on linkages to terrestrial and global ocean cycles. Two areas of research are particularly sought: (1) impacts of climate variability, extreme events (e.g. floods, resuspension), and land-cover/land-use change on the transport and cycling of carbon, nitrogen and other elements to and within the coastal ocean margins; (2) synthesis and modeling work that leads to improved coastal zone carbon budgets at scales of global relevance. This special session invites investigators to present and discuss recent progress in coastal systems biogeochemistry from observational, experimental, and modeling perspectives.

'Changing Biogeochemistry and Ecosystems in the Western North Pacific Continental Margins Under Climate Change and Anthropogenic Forcing'

Session 038 (Continental Margins Working Group)

Organizers:

Continental margins in the western north Pacific are bordered by the world’s most densely populated coastal communities and receive runoffs from very large rivers.  The large anthropogenic pressure threatens diverse coastal marine ecosystems, as demonstrated by the four-fold increase of Changjiang nitrogen loading in the past 30 years that possibly contributes to the increasing hypoxia in the East China Sea.  On the other hand, increasing impounding of freshwater for irrigation purposes may reduce riverine load of dissolved silicate, altering discharge patterns, nutrient elemental ratios and phytoplankton community downstream.  Increasing frequencies of widespread flooding since the beginning of the 20th century, which is attributable to the accelerated global hydrological cycle, may also cause marked changes in coastal oceans.  As continental margins sustain arguably the most productive ecosystems and most active biogeochemical processes in the earth system, the stressed ecosystems may threaten the livelihood of a large human population. Moreover, the altered biogeochemical cycles may cause many unknown feedbacks that exacerbate effects of climate change.  We invite contributions on interactions between physical-biogeochemical processes and the ecosystem in the west Pacific and consequences of human perturbations on these systems, as revealed by field observations, remote sensing, or modeling studies.

'Arctic-subarctic interactions'

Session 180 (ESSAS)

Organizers:

  • Ken Drinkwater, Institute of Marine Research, Bergen, Norway
  • Tom Haine, Johns Hopkins University, USA

The Arctic and the Subarctic are intrinsically linked, not only through exchange of water but also in the fluxes and movement of flora and fauna between the two regions. Both regions are experiencing profound changes under present warming and are predicted to be even more highly impacted under future global change. To understand how climate variability and change affect will affect these marine ecosystems, it is essential to understand the role of physical and biological fluxes between the Arctic and Subarctic as well as the mechanisms that link the physical characteristics and biological systems of these ocean areas. This session will focus on the links between the Subarctic and Arctic regions in both the Pacific and the Atlantic, building upon ongoing studies and recent IPY results. Evidence is sought on role of the cold Arctic outflows on the physical conditions in the Subarctic and their subsequent effect on the biology and the influence of the warmer Subarctic inflows on the Arctic basin and shelves. Papers linking multiple trophic levels or biology and physics are especially relevant with interest in all taxonomic groups from bacteria to whales. Comparative papers between the Atlantic and Pacific exchanges are especially desired.

'Oceanographic Processes at the Antarctic Continental Margins'

Session 033 (ICED)

Organizers:

  • Robin Muench, Earth & Space Research Seattle
  • Eileen Hofmann, Old Dominion University, Norfolk
  • Anna Wahlin, University of Gothenburg
  • Laurie Padman, Earth & Space Research Corvallis

The oceans encircling Antarctica experience vigorous exchanges between ocean, ice and atmosphere, with significant consequences for global ocean and climate states. Water mass modification through cooling, sea ice formation and mixing drives a global deep ocean overturning circulation and impacts the mass balance of the Antarctic Ice Sheet by influencing the stability of ice shelves that buttress glaciers and ice streams. Upwelling at the shelf break provides nutrients that fuel primary production, contributing to a rich ecosystem with a potentially significant impact on the oceanic carbon budget through sequestration. The session will focus on physical and biogeochemical processes in the circum-Antarctic continental margin. Results from field observations, models and remote sensing are welcome. Topics of interest include, but are not limited to: shelf, slope and coastal circulation and mixing; impacts of shelf-slope processes on deep and bottom water formation and on mass balance of ice shelves; atmospheric impacts on physical systems, including the sea ice cover, and on biological systems; and the relationships between physical processes and regional marine ecosystems. Discussions of the potential impacts of climate change on these various systems are particularly welcome. The session will include both oral and poster presentations