http://lod.bco-dmo.org/id/dataset/773858
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
2019-07-30
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Coscinodiscus sinking behavior under various light and nutrient conditions from April 2019
2019-08-13
publication
2019-08-13
revision
BCO-DMO Linked Data URI
2019-08-13
creation
http://lod.bco-dmo.org/id/dataset/773858
Brad J. Gemmell
University of South Florida
principalInvestigator
Tracy A. Villareal
University of Texas at Austin
principalInvestigator
Kevin Du Clos
University of South Florida
principalInvestigator
Lee Karp-Boss
University of Maine
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: Gemmell, B. J., Villareal, T. A., Du Clos, K., Karp-Boss, L. (2019) Coscinodiscus sinking behavior under various light and nutrient conditions from April 2019. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2019-08-13 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/773858 [access date]
Coscinodiscus sinking behavior under various light and nutrient conditions Dataset Description: <p>Sinking behavior of the diatom Coscinodiscus wailesii was recorded following exposure to light or dark or to varying nutrient conditions. More details on the treatments can be found in the Methods &amp; Sampling section below. Each description corresponds to the individual package referenced below.</p>
<p>2019-04-09:&nbsp;https://datadocs.bco-dmo.org/data/302/Diatom_Dynamic_Sinking/773858/1/data/2019-04-09.zip (992MB)<br />
2019-04-11:&nbsp;https://datadocs.bco-dmo.org/data/302/Diatom_Dynamic_Sinking/773858/1/data/2019-04-11.zip (1.3GB)<br />
2019-04-12:&nbsp;https://datadocs.bco-dmo.org/data/302/Diatom_Dynamic_Sinking/773858/1/data/2019-04-12.zip (2.2GB)</p> Methods and Sampling: <p>2019-04-09:&nbsp;<br />
Coscinodiscus wailesii diatom sinking behavior was recorded after exposure to light conditions or 2, 5, or 7 hours after exposure to dark conditions.<br />
Treatments:<br />
01 Light<br />
02 Dark 2h<br />
03 Dark 5h<br />
04 Dark 7h</p>
<p>2019-04-11:<br />
Coscinodiscus wailesii diatom sinking behavior was recorded after exposure to L1/2 media (replete) or exposure to L1/2 media depleted of one nutrient.<br />
Treatments:<br />
01 Replete<br />
02 N Depleted<br />
03 Si Depleted<br />
04 P Depleted<br />
<br />
2019-04-12:&nbsp;<br />
Coscinodiscus wailesii diatom sinking behavior was recorded after exposure to L1/2 media (replete) or L1/2 media depleted of one nutrient or after exposure to L1/2 media depleted of one nutrient followed by a spike of the missing nutrient.<br />
Treatments:<br />
01 Minus P<br />
02 Minus P Spike<br />
03 Minus Si<br />
04 Minus Si Spike<br />
05 Minus N<br />
06 Minus N Spike<br />
07 Replete</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1537546 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1537546
completed
Brad J. Gemmell
University of South Florida
813-974-1228
Department of Integrative Biology 4202 E. Fowler Ave
Tampa
FL
33620
USA
bgemmell@usf.edu
pointOfContact
Tracy A. Villareal
University of Texas at Austin
361-749-6732
Marine Science Institute and Dept. of Marine Science 750 Channel View Dr.
Port Aransas
TX
78373
USA
tracyv@austin.utexas.edu
pointOfContact
Kevin Du Clos
University of South Florida
kduclos@lumcon.edu
pointOfContact
Lee Karp-Boss
University of Maine
207-581-4305
345 Aubert Hall
Orono
ME
04469
USA
lee.karp-boss@maine.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Edgertronic SC1 camera
theme
None, User defined
Camera
instrument
BCO-DMO Standard Instruments
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.
Dynamic sinking behavior in diatoms: New insights from individual-based high resolution video observations
https://osprey.bco-dmo.org/project/651493
Dynamic sinking behavior in diatoms: New insights from individual-based high resolution video observations
<p><em>Description from NSF award abstract:</em><br />
The sinking of diatoms out of the well-lit upper layers of the ocean is responsible for transport of material to the deep-sea and is an important factor in controlling the overall abundance of this grass of the sea. Their sinking characteristics are important to understand in detail so they can be accurately represented in models of ocean dynamics. It has been assumed that all members of these non-flagellated, microscopic cells sink at approximately the same rate, at a constant rate, and that the direction of motion is downward. However, a re-examination of sinking rates at an individual cell level indicates that all three assumptions are incorrect. Using sophisticated optical and computing techniques, these researchers are examining how individual diatom cells sink, their ability to start and stop, and assessing what fraction can actually ascend. This study will yield new insights into how diatoms interact with their external environment by altering their movement through it. It will also address what fraction of these populations are actually moving upwards, thereby enhancing the movement of nutrients upward into the well-lit portions of the ocean. These are novel insights into how small unicellular species interact with the ocean around them and will significantly enrich our understanding of a problem that had been thought to be well understood. The project will train one graduate student and two undergraduate students in this research. Outreach is also provided by K-12 activities bringing holographic instruments into the classroom, and a public lecture series at our institute.</p>
<p>Diatom sinking rates are important life history characteristics that control both loss rates and nutrient flux to the cell surface. Positive buoyancy (m per hour rates) is an attribute of the largest diatom cells and plays a role in a vertical migration life history strategy. However, rates in smaller diatoms are typically described from a modified Stokes equation and are generally assumed to uniform and downward. The investigators previously observed that a species sinking rate is not monotonic within a sample but is distributed around a mean value, may be both upward and downward, and is under cellular control from near-zero to maximum velocity over second time scales. Thus, ascending behavior can be limited to a small portion of a population with a substantial downward rate. The goal of this project is to determine how widespread these characteristics are, determine the role of this unique start-stop sinking behavior, and examine how pervasive positive buoyancy is using a series of carefully controlled laboratory studies and a broad suite of diatom species. These characteristics will be considered within a framework of the complex form/function patterns that occur in diatoms. Boundary layers around cells differ vastly during the stop/start sequence and can be directly visualized by our techniques. Nutrient diffusion to the cell is accelerated during fast sinking; the investigators hypothesize that diffusion to cellular surfaces has been underestimated by using a constant bulk sinking rate. This work is only possible with the advent of high resolution cameras and advanced processing that allows particle and fluid flow to be quantified in a dynamic water column.</p>
Diatom Dynamic Sinking
largerWorkCitation
project
eng; USA
oceans
2019-04-09
2019-04-12
laboratory studies, Univ. of Texas at Austin, University of South Florida
0
BCO-DMO catalogue of parameters from Coscinodiscus sinking behavior under various light and nutrient conditions from April 2019
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
1039564959
https://datadocs.bco-dmo.org/data/302/Diatom_Dynamic_Sinking/773858/1/data/2019-04-09.zip
2019-04-09.zip
Coscinodiscus wailesii diatom sinking behavior was recorded after exposure to light conditions or 2, 5, or 7 hours after exposure to dark conditions.
Treatments:
01 Light
02 Dark 2h
03 Dark 5h
04 Dark 7h
download
1322847143
https://datadocs.bco-dmo.org/data/302/Diatom_Dynamic_Sinking/773858/1/data/2019-04-11.zip
2019-04-11.zip
Coscinodiscus wailesii diatom sinking behavior was recorded after exposure to L1/2 media (replete) or exposure to L1/2 media depleted of one nutrient.
Treatments:
01 Replete
02 N Depleted
03 Si Depleted
04 P Depleted
download
2361756379
https://datadocs.bco-dmo.org/data/302/Diatom_Dynamic_Sinking/773858/1/data/2019-04-12.zip
2019-04-12.zip
Coscinodiscus wailesii diatom sinking behavior was recorded after exposure to L1/2 media (replete) or L1/2 media depleted of one nutrient or after exposure to L1/2 media depleted of one nutrient followed by a spike of the missing nutrient.
Treatments:
01 Minus P
02 Minus P Spike
03 Minus Si
04 Minus Si Spike
05 Minus N
06 Minus N Spike
07 Replete
download
https://osprey.bco-dmo.org/dataset/773858/data/download
download
onLine
dataset
<p>2019-04-09:&nbsp;<br />
Coscinodiscus wailesii diatom sinking behavior was recorded after exposure to light conditions or 2, 5, or 7 hours after exposure to dark conditions.<br />
Treatments:<br />
01 Light<br />
02 Dark 2h<br />
03 Dark 5h<br />
04 Dark 7h</p>
<p>2019-04-11:<br />
Coscinodiscus wailesii diatom sinking behavior was recorded after exposure to L1/2 media (replete) or exposure to L1/2 media depleted of one nutrient.<br />
Treatments:<br />
01 Replete<br />
02 N Depleted<br />
03 Si Depleted<br />
04 P Depleted<br />
<br />
2019-04-12:&nbsp;<br />
Coscinodiscus wailesii diatom sinking behavior was recorded after exposure to L1/2 media (replete) or L1/2 media depleted of one nutrient or after exposure to L1/2 media depleted of one nutrient followed by a spike of the missing nutrient.<br />
Treatments:<br />
01 Minus P<br />
02 Minus P Spike<br />
03 Minus Si<br />
04 Minus Si Spike<br />
05 Minus N<br />
06 Minus N Spike<br />
07 Replete</p>
Specified by the Principal Investigator(s)
- Repackaged the submission into dated subpackages to reduce download package size.
Specified by BCO-DMO Data Managers
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
Edgertronic SC1 camera
Edgertronic SC1 camera
PI Supplied Instrument Name: Edgertronic SC1 camera PI Supplied Instrument Description:Camera: Edgertronic SC1 camera (Sanstreak Corp., San Jose, CA, USA)
Lens: Nikon 105 mm 1:1 macro lens
Resolution: 1280 x 1024 px
Frame rate: 10 fps
Illumination: LED infrared illuminator Instrument Name: Camera Instrument Short Name:camera Instrument Description: All types of photographic equipment including stills, video, film and digital systems. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/311/