{"xmlId":"11116","NOAAStudyId":"13074","studyName":"Lone Spruce Pond, Alaska 14,500 Year Multiproxy Sediment Data","doi":"https://doi.org/10.25921/nyeg-9282","uuid":"5a5c7966-943d-4295-a31c-59a5d2cd699b","dataPublisher":"NOAA","contactInfo":{"type":"CONTACT INFORMATION","shortName":"DOC/NOAA/NESDIS/NCEI","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","address":"325 Broadway, E/NE31","city":"Boulder","state":"CO","postalCode":"80305-3328","country":"USA","dataCenterUrl":"https://www.ncei.noaa.gov/products/paleoclimatology","email":"paleo@noaa.gov","phone":"828-271-4800","fax":null,"constraints":"Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site."},"dataType":"PALEOLIMNOLOGY","investigators":"Kaufman, D.S.; Axford, Y.; Anderson, R.S.; Lamoureux, S.F.; Schindler, D.E.; Walker, I.R.; Werner, A.","investigatorDetails":[{"firstName":"Darrell","lastName":"Kaufman","initials":"D.S.","orcId":"0000-0002-7572-1414"},{"firstName":"Yarrow","lastName":"Axford","initials":"Y.","orcId":"0000-0002-8033-358X"},{"firstName":"R. Scott","lastName":"Anderson","initials":"R.S.","orcId":null},{"firstName":"Scott","lastName":"Lamoureux","initials":"S.F.","orcId":"0000-0002-6565-5804"},{"firstName":"Daniel","lastName":"Schindler","initials":"D.E.","orcId":null},{"firstName":"Ian","lastName":"Walker","initials":"I.R.","orcId":null},{"firstName":"Alan","lastName":"Werner","initials":"A.","orcId":null}],"version":"1.0","funding":[],"studyNotes":"Multiproxy sediment data from Lone Spruce Pond, Alaska, for the past 14,500 years. Paleoenvironmental proxies measured include abundance of organic matter, biogenic silica, carbon and nitrogen content and isotopic ratios, magnetic susceptibility, grain-size distribution of bulk sediment, abundance of alder shrub (Alnus) pollen, and midge (Chironomidae and Chaoboridae) assemblages. \r\n\r\nLone Spruce Pond, Southwestern Alaska: 60.007°N, 159.143°W","onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/13074","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-lake-13074.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-lake-13074.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/lake","studyCode":null,"scienceKeywords":["Arctic","Younger Dryas","PAGES Arctic 2k"],"reconstruction":"N","contributionDate":"2012-06-30","entryId":"noaa-lake-13074","earliestYearBP":14524,"mostRecentYearBP":-5,"earliestYearCE":-12574,"mostRecentYearCE":1955,"publication":[{"author":{"name":"Kaufman, D.S., Y. Axford, R.S. Anderson, S.F. Lamoureux, D.E. Schindler, I.R. Walker, and A. Werner"},"pubYear":2012,"title":"A multi-proxy record of the Last Glacial Maximum and last 14,500 years  of paleoenvironmental change at Lone Spruce Pond, southwestern Alaska","journal":"Journal of Paleolimnology","volume":"48","edition":null,"issue":"1","pages":"9-26","reportNumber":null,"citation":"Kaufman, D.S., Y. Axford, R.S. Anderson, S.F. Lamoureux, D.E. Schindler, I.R. Walker, and A. Werner. 2012. A multi-proxy record of the Last Glacial Maximum and last 14,500 years  of paleoenvironmental change at Lone Spruce Pond, southwestern Alaska. Journal of Paleolimnology, 48(1), 9-26. doi: 10.1007/s10933-012-9607-4","type":"publication","identifier":{"type":"doi","id":"10.1007/s10933-012-9607-4","url":"http://dx.doi.org/10.1007/s10933-012-9607-4"},"abstract":"Sediment cores from Lone Spruce Pond (60.007°N, 159.143°W), southwestern Alaska, record paleoenvironmental changes during the global Last Glacial Maximum (LGM), and during the last 14,500 calendar years BP (14.5 cal ka). We analyzed the abundance of organic matter, biogenic silica, carbon, and nitrogen, and the isotope ratios of C and N, magnetic susceptibility, and grain-size distribution of bulk sediment, abundance of alder shrub (Alnus) pollen, and midge (Chironomidae and Chaoboridae) assemblages in a 4.7-m-long sediment sequence from the depocenter at 22 m water depth. The basal unit contains macrofossils dating to 25-21 cal ka (the global LGM), and is interpreted as glacial-lacustrine sediment. The open water requires that the outlet of the Ahklun Mountain ice cap had retreated to within 6 km of the range crest. In addition to cladocerans and diatoms, the glacial-lacustrine mud contains chironomids consistent with deep, oligotrophic conditions; several taxa associated with relatively warm conditions are present, suggestive of relative warmth during the global LGM. The glacial-lacustrine unit is separated from the overlying non-glacial lake sediment by a possible disconformity, which might record a readvance of glacier ice. Non-glacial sediment began accumulating around 14.5 cal ka, with high flux of mineral matter and fluctuating physical and biological properties through the global deglacial period, including a reversal in biogenic-silica (BSi) content during the Younger Dryas (YD). During the global deglacial interval, the d13C values of lake sediment were higher relative to other periods, consistent with low C:N ratios (8), and suggesting a dominant atmospheric CO2 source of C for phytoplankton. Concentrations of aquatic faunal remains (chironomids and Cladocera) were low throughout the deglacial interval, diversity was low and warm-indicator taxa were absent. Higher production and air temperatures are inferred following the YD, when bulk organic-matter (OM) content (LOI 550 °C) increased substantially and permanently, from 10 to 30%, a trend paralleled by an increase in C and N abundance, an increase in C:N ratio (to about 12), and a decrease in d13C of sediment. Post-YD warming is marked by a rapid shift in the midge assemblage. Between 8.9 and 8.5 cal ka, Alnus pollen tripled (25-75 %), followed by the near-tripling of BSi (7-19 %) by 8.2 cal ka, and d15N began a steady rise, reflecting the buildup of N and an increase in denitrification in soils. Several chironomid taxa indicative of relatively warm conditions were present throughout the Holocene. Quantitative chironomid-based temperature inferences are complicated by the expansion of Alnus and resulting changes in lake nutrient status and production; these changes were associated with an abrupt increase in cladoceran abundance and persistent shift in the chironomid assemblage. During the last 2,000 years, chironomid-assemblage changes suggest cooler temperatures, and BSi and OM values were generally lower than their maximum Holocene values, with minima during the seventh and eighth centuries, and again during the eighteenth century.","pubRank":"1"}],"site":[{"NOAASiteId":"53152","siteName":"Lone Spruce Pond","siteCode":null,"mappable":"Y","locationName":"Continent>North America>United States Of America>Alaska","geo":{"geoType":"Feature","geometry":{"type":"POINT","coordinates":["60.007","-159.143"]},"properties":{"southernmostLatitude":"60.007","northernmostLatitude":"60.007","westernmostLongitude":"-159.143","easternmostLongitude":"-159.143","minElevationMeters":null,"maxElevationMeters":null}},"paleoData":[{"dataTableName":"LSP2012","NOAADataTableId":"22528","earliestYear":14524,"mostRecentYear":-5,"timeUnit":"cal yr BP","earliestYearBP":14524,"mostRecentYearBP":-5,"earliestYearCE":-12574,"mostRecentYearCE":1955,"coreLengthMeters":null,"dataTableNotes":null,"species":[],"dataFile":[{"fileUrl":"https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/alaska/lonespruce2012.txt","urlDescription":"Data","linkText":"lonespruce2012.txt","variables":[{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"age variable>age","cvMaterial":null,"cvError":null,"cvUnit":"time unit>age unit>calendar year before present","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"age_calBP"},{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"depth variable>depth","cvMaterial":null,"cvError":null,"cvUnit":"length unit>centimeter","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"depth_cm"},{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"depth variable>depth","cvMaterial":null,"cvError":null,"cvUnit":"length unit>centimeter","cvSeasonality":null,"cvDetail":"corrected","cvMethod":null,"cvAdditionalInfo":"corrected for tephra layers","cvFormat":"Numeric","cvShortName":"depth_tephra"},{"cvDataType":"POLLEN","cvWhat":"depth variable>depth","cvMaterial":null,"cvError":null,"cvUnit":"length unit>centimeter","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"depth_cm"},{"cvDataType":"POLLEN","cvWhat":"depth variable>depth","cvMaterial":null,"cvError":null,"cvUnit":"length unit>centimeter","cvSeasonality":null,"cvDetail":"corrected","cvMethod":null,"cvAdditionalInfo":"corrected for tephra layers","cvFormat":"Numeric","cvShortName":"depth_tephra"},{"cvDataType":"POLLEN","cvWhat":"age variable>age","cvMaterial":null,"cvError":null,"cvUnit":"time unit>age unit>calendar year before present","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"age_calBP"},{"cvDataType":"POLLEN","cvWhat":"biological material>bulk biological material>pollen","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Alnus pollen percent","cvFormat":"Numeric","cvShortName":"Alnus%"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"depth variable>depth","cvMaterial":null,"cvError":null,"cvUnit":"length unit>centimeter","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"depth_cm"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"depth variable>depth","cvMaterial":null,"cvError":null,"cvUnit":"length unit>centimeter","cvSeasonality":null,"cvDetail":"corrected","cvMethod":null,"cvAdditionalInfo":"corrected for tephra layers","cvFormat":"Numeric","cvShortName":"depth_tephra"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"age variable>age","cvMaterial":null,"cvError":null,"cvUnit":"time unit>age unit>calendar year before present","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"age_calBP"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"sampling metadata>notes","cvMaterial":null,"cvError":null,"cvUnit":null,"cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Chiron IDs","cvFormat":"Numeric","cvShortName":"Chiron.IDs"},{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"magnetic property>magnetic moments>magnetic susceptibility>volume magnetic susceptibility","cvMaterial":"geological material>bulk geological material>sediment","cvError":null,"cvUnit":"dimensionless>dimensionless (SI system)","cvSeasonality":null,"cvDetail":null,"cvMethod":"laboratory method>magnetic susceptibility measurement>magnetic susceptibility measurement with point or surface sensor","cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"MS_SI"},{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"chemical composition>compound>inorganic compound>silicon dioxide>biogenic silica","cvMaterial":"geological material>bulk geological material>sediment","cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":"laboratory method>spectroscopy>electronic spectroscopy>spectrophotometry","cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"BSi%"},{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"biological material>bulk biological material>organic matter","cvMaterial":"geological material>bulk geological material>sediment","cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":"laboratory method>pyrolysis>loss on ignition","cvAdditionalInfo":"550 degrees for 5 hours","cvFormat":"Numeric","cvShortName":"LOI%"},{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"physical property>density","cvMaterial":"geological material>bulk geological material>sediment","cvError":null,"cvUnit":"mass density unit>gram per cubic centimeter","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"bulk_dens"},{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"physical property>length>diameter>grain size>grain size parameter>grain size median","cvMaterial":"geological material>bulk geological material>sediment","cvError":null,"cvUnit":"length unit>micrometer","cvSeasonality":null,"cvDetail":null,"cvMethod":"laboratory method>particle size analysis>laser particle size analysis","cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"median"},{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"physical property>length>diameter>grain size>grain size class>clay","cvMaterial":"geological material>bulk geological material>sediment","cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":"laboratory method>particle size analysis>laser particle size analysis","cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"clay%"},{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"physical property>length>diameter>grain size>grain size class>silt","cvMaterial":"geological material>bulk geological material>sediment","cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":"laboratory method>particle size analysis>laser particle size analysis","cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"silt%"},{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"physical property>length>diameter>grain size>grain size class>sand","cvMaterial":"geological material>bulk geological material>sediment","cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":"laboratory method>particle size analysis>laser particle size analysis","cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"sand%"},{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C","cvMaterial":"geological material>bulk geological material>sediment","cvError":null,"cvUnit":"concentration unit>parts per notation unit>parts per thousand>per mil","cvSeasonality":null,"cvDetail":null,"cvMethod":"laboratory method>spectroscopy>mass spectrometry>isotope ratio mass spectrometry","cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"d13C"},{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"chemical composition>isotope>isotope ratio>delta 15N","cvMaterial":"geological material>bulk geological material>sediment","cvError":null,"cvUnit":"concentration unit>parts per notation unit>parts per thousand>per mil","cvSeasonality":null,"cvDetail":null,"cvMethod":"laboratory method>spectroscopy>mass spectrometry>isotope ratio mass spectrometry","cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"d15N"},{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"chemical composition>element or single-element molecule>carbon","cvMaterial":"geological material>bulk geological material>sediment","cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":"laboratory method>elemental analysis","cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"C%"},{"cvDataType":"PALEOLIMNOLOGY","cvWhat":"chemical composition>element or single-element molecule>nitrogen","cvMaterial":"geological material>bulk geological material>sediment","cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":"laboratory method>elemental analysis","cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"N%"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>insect index>midge index>total head capsules","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>count per mass unit>count per gram","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"head_caps"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Chaoborus trivittati","cvFormat":"Numeric","cvShortName":"C.triv"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Chaoborus americanus","cvFormat":"Numeric","cvShortName":"C.amer"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Protanypus sp.","cvFormat":"Numeric","cvShortName":"Prot.sp"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Corynoneura/Thienemanniella","cvFormat":"Numeric","cvShortName":"Cory.Thie"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Cricotopus/Orthocladius","cvFormat":"Numeric","cvShortName":"Cric.Orth"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Heterotrissocladius sp.","cvFormat":"Numeric","cvShortName":"Hetero.sp"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Limnophyes sp.","cvFormat":"Numeric","cvShortName":"Limno.sp"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Mesocricotopus sp.","cvFormat":"Numeric","cvShortName":"Mesoc.sp"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Metriocnemus sp.","cvFormat":"Numeric","cvShortName":"Metri.sp"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Parakiefferiella nigra","cvFormat":"Numeric","cvShortName":"P.nigra"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Parakiefferiella species B","cvFormat":"Numeric","cvShortName":"Para.spB"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Parametriocnemus/Paraphaenocladius","cvFormat":"Numeric","cvShortName":"Param.Parap"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Psectrocladius sp.","cvFormat":"Numeric","cvShortName":"Psect.sp"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Zalutschia type A","cvFormat":"Numeric","cvShortName":"Zalut.A"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Zalutschia type B","cvFormat":"Numeric","cvShortName":"Zalut.B"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Procladius sp.","cvFormat":"Numeric","cvShortName":"Proc.sp"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Pentaneurini","cvFormat":"Numeric","cvShortName":"Penta"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Chironomus sp.","cvFormat":"Numeric","cvShortName":"Chiro.sp"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Cladopelma sp.","cvFormat":"Numeric","cvShortName":"Clado.sp"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Demicryptochironomus","cvFormat":"Numeric","cvShortName":"Demicry"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Dicrotendipes sp.","cvFormat":"Numeric","cvShortName":"Dicro.sp"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Glyptotendipes sp.","cvFormat":"Numeric","cvShortName":"Glypt.sp"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Microtendipes sp.","cvFormat":"Numeric","cvShortName":"Microt.sp"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Pagastiella sp.","cvFormat":"Numeric","cvShortName":"Paga.sp"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Phaenopsectra flavipes","cvFormat":"Numeric","cvShortName":"P.flav"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Polypedilum sp.","cvFormat":"Numeric","cvShortName":"Polyp.sp"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Sergentia sp.","cvFormat":"Numeric","cvShortName":"Serge.sp"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Stichtochironomus sp.","cvFormat":"Numeric","cvShortName":"Stich.sp"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Corynocera ambigua","cvFormat":"Numeric","cvShortName":"C.ambi"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Micropsectra sp.","cvFormat":"Numeric","cvShortName":"Microp.sp"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Stempellinella/Zavrelia","cvFormat":"Numeric","cvShortName":"Stem.Zav"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Tanytarsus chinyensis","cvFormat":"Numeric","cvShortName":"T.chiny"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"Tanytarsina","cvFormat":"Numeric","cvShortName":"Tanyt"},{"cvDataType":"INSECT|PALEOLIMNOLOGY","cvWhat":"biological material>organism>insect>identified insect>identified midge","cvMaterial":null,"cvError":null,"cvUnit":"concentration unit>percent","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":"unspecified midge","cvFormat":"Numeric","cvShortName":"unspec"}],"NOAAKeywords":["earth science>paleoclimate>paleolimnology>carbon isotopes","earth science>paleoclimate>paleolimnology>physical properties","earth science>paleoclimate>paleolimnology>oxygen isotopes","earth science>paleoclimate>paleolimnology>population abundance","earth science>paleoclimate>paleolimnology>magnetic susceptibility","earth science>paleoclimate>paleolimnology>mineralogy"]},{"fileUrl":"https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/alaska/lonespruce2012.xls","urlDescription":"Data","linkText":"lonespruce2012.xls","variables":[],"NOAAKeywords":["earth science>paleoclimate>paleolimnology>magnetic susceptibility","earth science>paleoclimate>paleolimnology>carbon isotopes","earth science>paleoclimate>paleolimnology>population abundance","earth science>paleoclimate>paleolimnology>oxygen isotopes","earth science>paleoclimate>paleolimnology>mineralogy","earth science>paleoclimate>paleolimnology>physical properties"]}]}]}],"reference":{"pastThesaurusSkos":"https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf","pastThesaurusExplorer":"https://www.ncei.noaa.gov/access/paleo-search/cvterms","gcmdKeywordThesaurus":"https://earthdata.nasa.gov/earth-observation-data/find-data/idn/gcmd-keywords"},"dataLicenseDescription":null,"dataLicenseUrl":null}