http://lod.bco-dmo.org/id/dataset/657684 eng; USA utf8 dataset Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project Biological and Chemical Oceanography Data Management Office (BCO-DMO) Unavailable 508-289-2009 WHOI MS#36 Woods Hole MA 02543 USA info@bco-dmo.org http://www.bco-dmo.org Monday - Friday 8:00am - 5:00pm For questions regarding this resource, please contact BCO-DMO via the email address provided. pointOfContact 2016-08-26 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) CruiseTrackBH13-13 from the SINC project of the Laurentian Great Lakes Ecosystem Studies program 2016-08-26 publication 2016-08-26 revision BCO-DMO Linked Data URI 2016-08-26 creation http://lod.bco-dmo.org/id/dataset/657684 Dr Robert W. Sterner University of Minnesota Twin Cities principalInvestigator George S. Bullerjahn Bowling Green State University principalInvestigator Dr Jacques C. Finlay University of Minnesota Twin Cities principalInvestigator Robert Michael McKay Bowling Green State University principalInvestigator Biological and Chemical Oceanography Data Management Office (BCO-DMO) Unavailable 508-289-2009 WHOI MS#36 Woods Hole MA 02543 USA info@bco-dmo.org http://www.bco-dmo.org Monday - Friday 8:00am - 5:00pm For questions regarding this resource, please contact BCO-DMO via the email address provided. publisher Cite this dataset as: (2016) CruiseTrackBH13-13. Biological and Chemical Oceanography Data Management Office (BCO-DMO). Version Date 2016-08-26 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/657684 [access date] testing Dataset Description: &lt;p&gt;testing&lt;/p&gt; Methods and Sampling: onGoing Dr Robert W. Sterner University of Minnesota Twin Cities 218-726-7926 Director, Large Lakes Observatory 2205 East 5th St., University of Minnesota Duluth Duluth MN 55812-2496 USA stern007@d.umn.edu pointOfContact George S. Bullerjahn Bowling Green State University 419-372-8527 Department of Biological Sciences Bowling Green State University Bowling Green OH 43403 USA bullerj@bgsu.edu pointOfContact Dr Jacques C. Finlay University of Minnesota Twin Cities Dept of Ecology, Evolution and Behavior Saint Paul MN 55108 USA jfinlay@umn.edu pointOfContact Robert Michael McKay Bowling Green State University 419-378-1276 Great Lakes Institute for Environmental Research University of Windsor Windsor ON N9B 3P4 Canada robert.mckay@uwindsor.ca pointOfContact asNeeded Unknown BH13-13 service Deployment Activity Lake superior place Locations otherRestrictions otherRestrictions Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use. Laurentian Great Lakes Ecosystem Studies http://www.tc.umn.edu/~stern007/ Laurentian Great Lakes Ecosystem Studies A series of studies concerned with the chemistry and biology of the Laurentian Great Lakes.  These different studies share a focus on the dynamics of organic pools of carbon, nitrogen and phosphorus, and the stoichiometric linkages among these elements. At different times, work also has focused on trace metal dynamics and interactions with biota, the rates of primary production and herbivory, rates and patterns of primary productivity, and the century-long, steady trend of increasing nitrate in Earth's largest lake by area.  Microbial populations have been investigated and linked to these chemical properties. This Program was created by BCO-DMO staff to bring various Laurentian Great Lakes Research projects under one umbrella for improved discovery and access. Dates: 1998 - 2014 Funding: NSF/OCE and Minnesota Sea Grant Laurentian Great Lakes Ecosystem Studies largerWorkCitation program Sources and Sinks of Stoichiometrically Imbalanced Nitrate in the Laurentian Great Lakes http://www.tc.umn.edu/~stern007/ Sources and Sinks of Stoichiometrically Imbalanced Nitrate in the Laurentian Great Lakes <p>This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).</p> <p>Over large scales encompassing heterogeneous conditions, biogeochemical mechanisms act to achieve a stoichiometric balance between nitrogen and phosphorus. Locally, however, imbalances can develop. The Laurentian Great Lakes are a vast freshwater system where nitrate has been steadily accumulating for decades. Previous work has shown that in Lake Superior, the headwaters of the system, nitrate enters the lake water primarily due to in-lake biogeochemical processes, not due to passive accumulation of nitrate as a conservative substance as previously believed. An extreme stoichiometric imbalance of nitrate/phosphate ratios (~ 10,000 by moles) is present and is apparently growing. This set of prior findings opens up two major questions. First, what are the principal biogeochemical control points that tip the N cycle toward buildup of excess nitrate? And second, how does the extreme stoichiometric imbalance affect the ecology and evolution of Lake Superior's biota?</p> <p>In this project, researchers at the University of Minnesota - Twin Cities and the Bowling Green State University, who previously documented the nitrate buildup in Lake Superior, will continue their research program and address these two questions. The project is organized around making comparative measurements of N assimilation, nitrification, denitrification, anammox, and microbial community structure in Lake Superior and in the central basin of Lake Erie. These two environments differ greatly in many ways including redox state and organic carbon production rates. From the standpoint of N balancing mechanisms, they can be considered end members within the Laurentian Great Lakes. Additional data will be collected across a larger region of the Upper Great Lakes including Lake Huron. Up-to-date mass balance budgets of nitrogen of the most of the Great Lakes (Lake Superior is already done) will be constructed and linked with hydrologic fluxes to gain insights into the dynamics of N across the entire Laurentian Great Lakes System. Observations of water chemistry will be made with ship-board sampling together with field-deployed nitrate sensors in shallow and deep waters. Process studies will be performed in the water column and at the sediment-water interface and will involve sensitive stable isotope techniques. These will include measurements of NO3 and NH4+ uptake into different size fractions, exchanges of different forms of N and C between the water column and sediments, nitrification, denitrification, and anammox. The diversity and abundance of ammonia oxidizing Archea (AOA) and bacteria (AOB) will be studied using quantitative real time PCR and DGGE. Similarly, the genetic composition of denitrifyers and anammox bacteria will be studied to see if they too are represented by novel clades in Lake Superior. Cultured nitrifyers will be characterized in terms of growth under different conditions typically encountered across the Great Lakes. The project will yield valuable information and insight into the operation of the nitrogen cycle under conditions that promote stoichiometric imbalances.</p> <p>Previous work (2004-2007) by this team of investigators and others investigated the intersection of the nitrogen cycle with the phosphorus and iron cycles in Lake Superior and included studying the responses of plankton communities to differing nutrient supply regimes. Prior to 2004, many of the same investigators conducted research on the existence, mechanisms, spatial-temporal extent, and significance of trace metal limitation to primary production in Lake Superior. This early research was designed to quantify and characterize total and bioactive trace metal concentrations of Al, Fe, Mn, Zn, Cu, Cd, and Co in Lake Superior. The project included immunological and fluorescence assays to assess metal deficiency in algae in the natural environment and trace metal enrichment experiments in the laboratory to assess limitation experimentally.</p> <p>The Laurentian Great Lakes are a valuable regional resource and an immense reservoir of planetary fresh water. Lake Superior is often considered to be relatively pristine but the ultimate source of the N converted to nitrate in the lake is as yet unknown and may involve past changes to the watershed or other anthropogenic factors.</p> SINC largerWorkCitation project eng; USA location Lake superior 2016-08-26 Lake Superior; Great Lakes 0 BCO-DMO catalogue of parameters from CruiseTrackBH13-13 from the SINC project of the Laurentian Great Lakes Ecosystem Studies program Biological and Chemical Oceanography Data Management Office (BCO-DMO) Unavailable 508-289-2009 WHOI MS#36 Woods Hole MA 02543 USA info@bco-dmo.org http://www.bco-dmo.org Monday - Friday 8:00am - 5:00pm For questions regarding this resource, please contact BCO-DMO via the email address provided. pointOfContact GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom Biological and Chemical Oceanography Data Management Office (BCO-DMO) Unavailable 508-289-2009 WHOI MS#36 Woods Hole MA 02543 USA info@bco-dmo.org http://www.bco-dmo.org Monday - Friday 8:00am - 5:00pm For questions regarding this resource, please contact BCO-DMO via the email address provided. pointOfContact 3554 https://datadocs.bco-dmo.org/file/EKKyEORT1rn5pp/Controlnav.csv Controlnav.csv Primary data file for dataset ID 657684 download https://osprey.bco-dmo.org/dataset/657684/data/download download onLine asNeeded 7.x-1.1 Biological and Chemical Oceanography Data Management Office (BCO-DMO) Unavailable 508-289-2009 WHOI MS#36 Woods Hole MA 02543 USA info@bco-dmo.org http://www.bco-dmo.org Monday - Friday 8:00am - 5:00pm For questions regarding this resource, please contact BCO-DMO via the email address provided. pointOfContact Cruise: BH13-13 BH13-13 R/V Blue Heron Community Standard Description International Council for the Exploration of the Sea R/V Blue Heron vessel R/V Blue Heron Community Standard Description International Council for the Exploration of the Sea R/V Blue Heron vessel