USAP-DC

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{"@context": "https://schema.org/", "@type": "Dataset", "@id": "https://www.usap-dc.org/view/dataset/602064", "additionalType": ["geolink:Dataset", "vivo:Dataset"], "name": "Krill Morphometric Data", "description": "Krill are an ecologically important component of all high latitude food webs and constitute a growing fishery yet we know very little about their behavior in response to environmentally relevant chemical, flow and photic conditions. \r\n
Our goal was to address the following specific questions.\r\n
A \u2013 How the individual krill respond to fluid, chemical and light signals using a custom built flume and well controlled chemical signals and light levels. \r\n
Specifically, we ask:\r\n
1) How do krill respond to vertical and horizontal currents-do they swim with or against the flow and what are the thresholds?\r\n
2) Does the presence of attractive (food-related) and aversive (predation-related) chemical cues modulate the intensity or type of response to flow?\r\n
3) Do light levels modify responses of krill to flow or flow-odor combinations?\r\n
\r\n
Krill were collected opportunistically around Palmer Station to maintain a stock of animals used in our experimental trials. A random subsample of the pool of krill (n = 90) were measured for morphometrics. ", "citation": "Fields, D. (2026) \"Krill Morphometric Data\" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/None.", "datePublished": "2026-06-09", "keywords": ["Antarctic Krill", "Cryosphere", "Palmer Station"], "creator": [{"@type": "Person", "additionalType": "geolink:Person", "name": "Fields, David", "email": "dfields@bigelow.org", "affiliation": {"@type": "Organization", "name": null}}], "distribution": [{"@type": "DataDownload", "additionalType": "http://www.w3.org/ns/dcat#DataCatalog", "encodingFormat": "text/xml", "name": "ISO Metadata Document", "url": "https://www.usap-dc.org/metadata/isoxml/602064iso.xml", "contentUrl": "/dataset/filename"}, {"@type": "DataDownload", "@id": "https://www.usap-dc.org/view/dataset/602064", "additionalType": "dcat:distribution", "url": "https://www.usap-dc.org/view/dataset/602064", "contentUrl": "/dataset/filename", "encodingFormat": "text/html"}, {"@type": "DataDownload", "@id": "https://www.usap-dc.org/view/dataset/602064", "additionalType": "dcat:distribution", "url": "https://www.usap-dc.org/view/dataset/602064", "contentUrl": "/dataset/filename", "encodingFormat": "text/html"}], "identifier": {"@type": "PropertyValue", "url": "https://www.usap-dc.org/view/dataset/602064", "value": "https://www.usap-dc.org/view/dataset/602064"}, "contributor": [{"@type": "Role", "roleName": "credit", "description": "funderName:NSF:GEO:OPP:Antarctic Organisms and Ecosystems awardNumber:1840949 awardTitle:Collaborative Research: Individual Based Approaches to Understanding Krill Distributions and Aggregations"}], "license": [{"@type": "CreativeWork", "URL": "https://creativecommons.org/licenses/by/4.0/", "name": "MD_Constraints", "description": "useLimitation: Creative Commons Attribution Only v4.0 Generic [CC BY 4.0]."}, {"@type": "CreativeWork", "name": "MD_LegalConstraints", "description": "accessConstraints: license. otherConstraints: Creative Commons Attribution Only v4.0 Generic [CC BY 4.0]."}, {"@type": "CreativeWork", "name": "MD_SecurityConstraints", "description": "classification: "}], "publisher": {"@type": "Organization", "name": "U.S. Antarctic Program (USAP) Data Center"}, "spatialCoverage": [{"@type": "Place", "geo": {"@type": "GeoShape", "box": "-64.7 -64 -64.7 -64"}}]}

Krill Morphometric Data Cite as Fields, D. (2026) "Krill Morphometric Data" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/None. Abstract Krill are an ecologically important component of all high latitude food webs and constitute a growing fishery yet we know very little about their behavior in response to environmentally relevant chemical, flow and photic conditions. Our goal was to address the following specific questions. A – How the individual krill respond to fluid, chemical and light signals using a custom built flume and well controlled chemical signals and light levels. Specifically, we ask: 1) How do krill respond to vertical and horizontal currents-do they swim with or against the flow and what are the thresholds? 2) Does the presence of attractive (food-related) and aversive (predation-related) chemical cues modulate the intensity or type of response to flow? 3) Do light levels modify responses of krill to flow or flow-odor combinations? Krill were collected opportunistically around Palmer Station to maintain a stock of animals used in our experimental trials. A random subsample of the pool of krill (n = 90) were measured for morphometrics. Creator(s): Fields, David Date Created: 2026-06-09 Repository: USAP-DC (current) License: Creative Commons Attribution Only v4.0 Generic [CC BY 4.0] Spatial Extent(s) West: -64, East: -64, South: -64.7, North: -64.7 Temporal Extent(s) Start: 2022-09-03 - End: 2022-12-13 Award(s) NSF 1840949 Version: 1 Related Project(s) Collaborative Research: Individual Based Approaches to Understanding Krill Distributions and Aggregations References Hellessey, N., Weissburg, M., & Fields, D. M. (2025). Penguin guano suppresses the grazing rate and modifies swimming behavior in Antarctic Krill (Euphausia superba). Frontiers in Marine Science, 12. (doi:10.3389/fmars.2025.1508287) Keywords Antarctic Krill Cryosphere Palmer Station