http://lod.bco-dmo.org/id/dataset/936829
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
2024-09-09
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Swimming kinematics of krill exposed to guano and food odor
2024-09-09
publication
2024-09-09
revision
BCO-DMO Linked Data URI
2024-09-09
creation
http://lod.bco-dmo.org/id/dataset/936829
Marc Weissburg
Georgia Institute of Technology
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: Weissburg, M. (2024) Swimming kinematics of krill exposed to guano and food odor. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2024-09-09 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/936829 [access date]
Methods and Sampling: <p>Krill were collected with an Isaacs-Kidd midwater trawl (IKMT) net from the RV Laurence M Gould (cruise LMG 22-11) and from the RV Nathaniel B. Palmer (10/22) from Wilhelmina Bay in the Bransfield Strait where they were held in tanks at ambient conditions with ambient flowing seawater during transport to Palmer Station. Adult krill were filmed in 3d using orthogonally mounted cameras and their swimming speeds, turns and headings calculated from the 3d paths reconstructed using DLTdv8.&nbsp;The flow channel used to collect the data was constructed of stainless steel and plexiglass. A stainless steel contraction section provided a smooth narrowing to a final width 25 cm of the working section (35 x 25 cm), with an additional 25 cm exit section terminating in a tail gate with a 3 inch bulkhead through with the water flowed into a sump. The upstream end of the working section was a stainless steel mesh with a roughly 5 mm mesh size, which primarily served to prevent krill from entering the contraction section, while the downstream end of the working section had similar mesh to prevent the krill moving into the exist section. The reservoir (a 55 gallon clean hdpe barrel) contained a 1 hp Tsurumi pump which returned the water to the upwelling section via 2 inch pvc hose). A ball valve on pump output regulated flow velocity. Horizontal flow velocities for these trials were 3 and 6 cm s-1 (medium. high) with the following chemical treatments:&nbsp; chl a (food) only (3 mg L-1 ), guano (0.1 ug L-1) chlorophyll and guano (3 mg L-1 and 0.1 ug L-1).&nbsp; Krill were filmed using infrared lighting with a measured light intensity of 0.0088 W m-2 in the 400-700 nM range.</p>
Funding provided by NSF Office of Polar Programs (formerly NSF PLR) (NSF OPP) Award Number: OPP-1840949 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1840949
Funding provided by NSF Office of Polar Programs (formerly NSF PLR) (NSF OPP) Award Number: OPP-1840927 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1840927
Funding provided by NSF Office of Polar Programs (formerly NSF PLR) (NSF OPP) Award Number: OPP-1840941 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1840941
onGoing
Marc Weissburg
Georgia Institute of Technology
404-894-8433
School of Biological Sciences Georgia Institute of Technology
Atlanta
GA
30332-0230
USA
marc.weissburg@biology.gatech.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
LMG2211
service
Deployment Activity
Antarctica
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.
Collaborative Research: Individual Based Approaches to Understanding Krill Distributions and Aggregations
https://osprey.bco-dmo.org/project/898124
Collaborative Research: Individual Based Approaches to Understanding Krill Distributions and Aggregations
<p><strong>NSF Award Abstract:</strong><br />
Antarctic krill (Euphausia superba) are an ecologically important component of the Southern Ocean's food web, yet little is known about their behavior in response to many features of their aquatic environment. This project will improve understanding of krill swimming and schooling behavior by examining individual responses to light levels, water flow rates, the presence of attractive and repulsive chemical cues. Flow, light and chemical conditions will be controlled and altered in specialized tanks outfitted with high speed digital camera systems so that individual krill responses to these factors can be measured in relevant schooling settings. This analysis will be used to predict preferred environments, define the capacity of krill to detect and move to them (and away from unfavorable ones). Such information will then be used to improve models that estimate the energetic costs of behaviors associated with different types of environments. Linking individual behavior to those of larger krill aggregations will also improve acoustic assessments of krill densities. Understanding the capacity of krill to respond to environmental perturbations will improve our understanding of the ecology of high latitude ecosystems and provide relevant information for the management of krill fisheries. The project will support graduate and undergraduate students and provide training for as post-doctoral associate. Curricular materials and public engagement activities will be based on the project's aims and activities. Project investigators will share model results and predictions of krill movements and school structure with experts interested in krill conservation and management.</p>
<p>The project will use horizontal and vertical laminar flow tunnels to examine krill behavior under naturally relevant conditions. Horizontal (1-10 cm per second) and vertical (1-3 mm per second) flow velocities mimic naturally relevant current patterns, while light levels and spectral quality will be varied from complete darkness to intensities experienced across the depth range inhabited by krill. Attractive phytoplankton odor will be created by dosing the flumes to obtain background chlorophyll a levels approximating average and bloom conditions, while repulsive cues will be generated from penguin guano. Behavior of individual krill in all conditions will be video recorded with cameras visualizing X-Y and Y-Z planes, and 3D movements will be reconstructed by video motion analysis at a 5 Hz sampling rate. The distribution of horizontal and vertical swimming angles and velocities will be used to create an individual based model (IBM) of krill movement in response to each condition, where krill behavior at each model time step is based on random draws from the velocity and angular distributions. Since krill commonly travel in groups, further experiments will examine the behavior of small krill schools in these same conditions to further parameterize variables such as individual spacing. Researchers will examine krill aggregation structure from 3D video records of krill swimming in a specially designed kriesel tank, and compute nearest neighbor distances (NND) and correlations of swimming angles among individuals within the aggregation. Krill movements in the IBM will be constrained to adhere to observed NND and angular correlations. Large scale oceanographic models will be used to define spatial environments in which the modelled krill will be allowed to move using simulated schools of 1000-100,000 krill. Model output will include the school swimming speed, direction and structure (packing density, NND). Researchers will compare available acoustic data sets of krill schools in measured flow and phytoplankton abundance to evaluate the model predictions.</p>
<p>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.</p>
Krill Aggregation
largerWorkCitation
project
eng; USA
oceans
Antarctica
2024-09-09
0
BCO-DMO catalogue of parameters from Swimming kinematics of krill exposed to guano and food odor
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
https://osprey.bco-dmo.org/dataset/936829/data/download
download
onLine
dataset
<p>Krill were collected with an Isaacs-Kidd midwater trawl (IKMT) net from the RV Laurence M Gould (cruise LMG 22-11) and from the RV Nathaniel B. Palmer (10/22) from Wilhelmina Bay in the Bransfield Strait where they were held in tanks at ambient conditions with ambient flowing seawater during transport to Palmer Station. Adult krill were filmed in 3d using orthogonally mounted cameras and their swimming speeds, turns and headings calculated from the 3d paths reconstructed using DLTdv8.&nbsp;The flow channel used to collect the data was constructed of stainless steel and plexiglass. A stainless steel contraction section provided a smooth narrowing to a final width 25 cm of the working section (35 x 25 cm), with an additional 25 cm exit section terminating in a tail gate with a 3 inch bulkhead through with the water flowed into a sump. The upstream end of the working section was a stainless steel mesh with a roughly 5 mm mesh size, which primarily served to prevent krill from entering the contraction section, while the downstream end of the working section had similar mesh to prevent the krill moving into the exist section. The reservoir (a 55 gallon clean hdpe barrel) contained a 1 hp Tsurumi pump which returned the water to the upwelling section via 2 inch pvc hose). A ball valve on pump output regulated flow velocity. Horizontal flow velocities for these trials were 3 and 6 cm s-1 (medium. high) with the following chemical treatments:&nbsp; chl a (food) only (3 mg L-1 ), guano (0.1 ug L-1) chlorophyll and guano (3 mg L-1 and 0.1 ug L-1).&nbsp; Krill were filmed using infrared lighting with a measured light intensity of 0.0088 W m-2 in the 400-700 nM range.</p>
Specified by the Principal Investigator(s)
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: LMG2211
LMG2211
ARSV Laurence M. Gould
Community Standard Description
International Council for the Exploration of the Sea
ARSV Laurence M. Gould
vessel
LMG2211
Marc Weissburg
Georgia Institute of Technology
ARSV Laurence M. Gould
Community Standard Description
International Council for the Exploration of the Sea
ARSV Laurence M. Gould
vessel