Late Holocene diatom abundaces in sediment core HC-11, supplement to: Tsoy, Ira B; Obrezkova, Maria S; Aksentov, KI; Kolesnik, Alexander N; Panov, V S (2017): Late holocene environmental changes in the Southwestern Chukchi Sea inferred from diatom analysis. Russian Journal of Marine Biology, 43(4), 276-285

• Main Authors: Tsoy, Ira B, Obrezkova, Maria S, Aksentov, KI, Kolesnik, Alexander N, Panov, V S
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2016
• Subjects: DEPTH, sediment/rock; Depth, top/min; Depth, bottom/max; Actinocyclus sp.; Actinocyclus curvatulus; Actinocyclus ochotensis; Actinocyclus octonarius; Actinocyclus subtilis; Actinoptychus senarius; Actinoptychus sp.; Amphora proteus; Amphora sp.; Aulacodiscus sp.; Bacterosira bathyomphala; Chaetoceros debilis; Chaetoceros diadema; Chaetoceros didymus; Chaetoceros furcellatus; Chaetoceros holsaticus; Chaetoceros ingolfianus; Chaetoceros lorenzianus; Chaetoceros mitra; Chaetoceros spp.; Cocconeis costata; Cocconeis scutellum; Coscinodiscus apiculatus; Coscinodiscus argus; Coscinodiscus asteromphalus; Coscinodiscus marginatus; Coscinodiscus oculus-iridis; Coscinodiscus radiatus; Cosmiodiscus insignis; Delphineis surirella; Detonula confervacea; Diploneis smithii; Diploneis smithii var. rhombica; Diploneis subcincta; Encyonema silesiacum; Entomoneis gigantea var. septentrionalis; Eunotia praerupta; Fossula arctica; Fragilariopsis cylindrus; Fragilariopsis oceanica; Fragilariopsis reginae-jahniae; Frustulia vulgaris; Grammatophora arcuata; Grammatophora marina; Hyalodiscus obsoletus; Hyalodiscus scoticus; Hyalodiscus sp.; Melosira arctica; Melosira moniliformis var. octogona; Navicula directa; Navicula peregrina; Navicula transitans var. derasa; Neidium bisulcatum; Neodenticula seminae; Nitzschia angularis; Nitzschia hudsonii; Nitzschia polaris; Nitzschia scabra; Nitzschia sp.; Odontella aurita; Paralia sulcata; Pauliella taeniata; Pinnularia borealis; Pinnularia brevicostata; Pinnularia lata; Pinnularia quadratarea var. cuneata; Pinnularia quadratarea var. subglabra; Pinnularia spp.; Pinnularia viridis; Placoneis placentula; Porosira glacialis; Proboscia alata; Proboscia subarctica; Pseudogomphonema arcticum; Pyxidicula zabelinae; Rhizosolenia hebetata; Rhizosolenia setigera; Rhizosolenia styliformis; Shionodiscus biporus; Shionodiscus latimarginatus; Shionodiscus oestrupii; Stellarima microtrias; Stephanopyxis horridus; Stephanopyxis nipponica; Stephanopyxis turris; Thalassionema nitzschioides; Thalassiothrix robusta; Thalassiosira anguste-lineata; Thalassiosira antarctica var. borealis; Thalassiosira baltica; Thalassiosira constricta; Thalassiosira eccentrica; Thalassiosira hyalina; Thalassiosira hyperborea; Thalassiosira nordenskioeldii; Thalassiosira spp.; Thalassiothrix longissima; Number of taxa; Dictyochophyceae; Distephanus speculum; Distephanus speculum minutus; Core; Chukchi Sea; Mitra; Antarc*; Antarctica; Chukchi
• Online Access: https://dx.doi.org/10.1594/pangaea.867181; https://doi.pangaea.de/10.1594/PANGAEA.867181

The study of diatoms in core HC11 collected from the southwestern part of Chukchi Sea, allowed to distinguish 3 diatoms ecological zones, reflecting paleoenvironmental changes during the last 2300 years. The sediment age was based on the sedimentation rates, determined by 210Pb and radiocarbon dating of mollusk shells. The environmental changes of Chukchi Sea revealed by examination of diatoms correlates with global climate changes - the warming of the early and middle Subatlantic and cooling of the late Subatlantic (Little Ice Age). Warming early and middle Subatlantic in the Chukchi Sea was probably stronger than the warming of the late 20th century and was not accompanied by significant changes in sea level. : <1 = Additional diatoms recorded after the main count.