This Wollrab_Baikal_Diatom_biovol_Epischurella_biomass_1951to1999_readme.txt file was generated on 2020-09-22 by Sabine Wollrab and co-authors GENERAL INFORMATION 1. Title of Dataset: Baikal Diatom biovolume and Epischurella biomass from 1951 to 1999 2. Author Information A. Principal Investigator Contact Information Name: Sabine Wollrab Institution: Leibniz-Institute of Freshwater Ecology and Inland Fisheries Address: Müggelseedamm, 310, Berlin, 12587, Germany Email: wollrab@igb-berlin.de B. Associate or Co-investigator Contact Information Name: Lyubov Izmest'yeva Institution: Irkutsk State University, Institute of Biology Address: Lenin str., 3, Irkutsk, 664025, Russian Federation Email: l.r.izmesteva@gmail.com C. Associate or Co-investigator Contact Information Name: Svetlana Shimaraeva Institution: Irkutsk State University, Institute of Biology Address: Lenin str., 3, Irkutsk, 664025, Russian Federation Email: shimaraeva@gmail.com D. Associate or Co-investigator Contact Information Name: Elena V. Pislegina Institution: Irkutsk State University, Institute of Biology Address: Lenin str., 3, Irkutsk, 664025, Russian Federation Email: Helga_64@mail.ru D. Associate or Co-investigator Contact Information Name: Olga Rusanovskaya Institution: Irkutsk State University, Institute of Biology Address: Lenin str., 3, Irkutsk, 664025, Russian Federation Email: rusanovskaya-o.o@mail.ru E. Alternate Contact Information Name: Eugene Silow Institution: Irkutsk State University, Institute of Biology Address: Lenin str., 3, Irkutsk, 664025, Russian Federation Email: eugenesilow@gmail.com 3. Date of data collection (single date, range, approximate date): 1951-01-15 to 1999-12-26 4. Geographic location of data collection : 51°52'48″ N and 105°05'02″ E,main station approximately 2.7 km offshore from Bol’shie Koty in the Southern Basin of Lake Baikal, Russian Federation 5. Information about funding sources that supported the collection of the data: Biological data part of historic Russian data set, registered with Russian gov. (No. 2005620028). The published data are based on (1) phytoplankton data from Lake Baikal, registered with Russian gov (No. 2014621482), Irkutsk State University, Federal Service on Intellectual Property. Data Base on the State of Phytoplankton of Lake Baikal. L.R. Izmest'yeva, S.V. Shimaraeva, E.A. Silow №2014620772/ Accepted 06.06.2014; Registered 23.10.2014 in Data Base Register. (2) Zooplankton data from Lake Baikal, registered with Russion gov. (No 2015621067), Irkutsk State University, Federal Service on Intellectual Property. Data Base on the State of Zooplankton of Lake Baikal. L.R. Izmest'yeva, S.V. Shimaraeva, E.V. Pislegina, E.A. Silow №2015620296/ Accepted 01.04.2015; Registered 13.07.2015 in Data Base Register. SHARING/ACCESS INFORMATION 1. Licenses/restrictions placed on the data: 1. Свидетельство об официальной регистрации базы данных № 2005620028. ГОУ ВПО «ИГУ». Федеральная служба по интеллектуальной собственности, патентам и товарным знакам. База данных состояния планктона озера Байкал (База данных «ПАНКТОН») / Л.Р. Изместьева, Е.В. Пешкова - №2004620262/ Поступила 30.11.2004; Зарегистрирована 21.01.2004 в Реестре баз данных. 2. Свидетельство о государственной регистрации базы данных № 2014621482. ФГБОУ ВПО «ИГУ». Федеральная служба по интеллектуальной собственности. База данных состояния фитопланктона озера Байкал / Л.Р. Изместьева, С.В. Шимараева, Е.А. Зилов. - №2014620772/ Поступила 06.06.2014; Зарегистрирована 23.10.2014 в Реестре баз данных. 3. Свидетельство о государственной регистрации базы данных № 2015621067. ФГБОУ ВПО «ИГУ». Федеральная служба по интеллектуальной собствен-ности. База данных состояния зоопланктона озера Байкал / Л.Р. Изместьева, С.В. Шимараева, Е.В. Пислегина, Е.А. Зилов. - №2015620296/ Поступила 01.04.2015; Зарегистрирована 13.07.2015 в Реестре баз данных. 2. Links to publications that cite or use the data: Wollrab, S, L. Izmest’yeva, S.E. Hampton, E.A. Silow, E. Litchman and C.A. Klausmeier. Climate change-driven regime shifts in a planktonic food web. American Naturalist 3. Links to other publicly accessible locations of the data: 4. Links/relationships to ancillary data sets: 5. Was data derived from another source? no A. If yes, list source(s): 6. Recommended citation for this dataset: DATA & FILE OVERVIEW 1. File List: [Baikal_Diatom_biovol_1951to1999.csv] Total Diatom biovolume (µm³/L) from Lake Baikal (0-50m) per sampling date for years 1951 to 1999. [Baikal_Epischurella_biomass_1951to1999.csv] Total Epischurella biomass (mg/L) from Lake Baikal (0-50m) per sampling date for years 1951 to 1999. 2. Relationship between files, if important: N 3. Additional related data collected that was not included in the current data package: N 4. Are there multiple versions of the dataset? N A. If yes, name of file(s) that was updated: i. Why was the file updated? ii. When was the file updated? METHODOLOGICAL INFORMATION 1. Description of methods used for collection/generation of data: Data have been collected by researchers from Irkutsk State University at least monthly, usually every 7-10 days, in depth profiles from the surface to at least 250 m at a single main station approximately 2.7 km offshore from Bol’shie Koty in the Southern Basin. Ice conditions prevent collection in some months, usually January and May. Phytoplankton were sampled along depth profiles with the Van Dorn bottle at 0, 10, 50, 100, and 200 m depths and were preserved before settling in Utermöhl chambers. In 1973 there was a change in the preservation methods from the use of formalin to a Lugol’s solution. Counts from samples before 1973 are considered representative for diatoms because they are equally well preserved in both, but not for other phytoplankton groups. Only diatom counts from the upper 50m are included in this dataset. Single zooplankton samples were collected with a closing plankton net (37.5 cm diameter, 100 μm mesh) from depth layers of 0-10, 10-25, 25-50, 50-100, 100-150, 150-250, and 250-500 m. Zooplankton samples were fixed in formalin throughout the duration of the long-term monitoring program with greatest consistency of temporal and spatial sampling occurring from 1955 forward. Both phytoplankton and zooplankton were identified and counted at the species level, and copepods were enumerated by age class. Only Epischurella baikalensis counts from the upper 25 m are included in this dataset, samples from the 25–50 m depth layer were excluded from our analyses because sampling frequency was not consistent at this depth layer across the time series. See also Hampton SE, Gray DK, Izmest’eva LR, Moore MV, Ozersky T (2014) The Rise and Fall of Plankton: Long-Term Changes in the Vertical Distribution of Algae and Grazers in Lake Baikal, Siberia. PLoS ONE 9(2): e88920. doi:10.1371/journal.pone.0088920 2. Methods for processing the data: For the analysis, diatom cell count data were converted to corresponding biovolume values (µm³/L) based on reported cell sizes (Rioual & Mackay 2005, Olenina et al. 2006, Belykh et al. 2006, Genkal & Bondarenko 2006, Kremer et al. 2014 and Database on Biovolume Metrics from Academy of Natural Sciences of Drexel University 2001). Count data (ind/m²) for nauplii, copepodite and adult stages of the Lake Baikal dominant zooplankton species Epischurella baikalensis were converted to (ind/L). Count data were then converted to corresponding biomass data (mg dry weight/L) based on body size reported by Afanasyeva (1998), multiplying number of individuals by 0.00027 for nauplii, by 0.008 for copepodites and by 0.1 for adults. Total diatom biovolume and total Epischurella biomass per sampling date were calculated for data from the upper layer (0-50m and 0-25m respectively). 3. Instrument- or software-specific information needed to interpret the data: 4. Standards and calibration information, if appropriate: no 5. Environmental/experimental conditions: no 6. Describe any quality-assurance procedures performed on the data: Visual inspection of the data to determine veracity of outliers has been performed. 7. People involved with sample collection, processing, analysis and/or submission: Diatom data: sample collection: L.R. Izmest'yeva, S.V. Shimaraeva, E.V. Pislegina, O.O. Rusanovskaya, E.A. Silow processing: S. Wollrab analysis: S. Wollrab, E.A. Silow Epischurella data: sample collection: L.R. Izmest'yeva, E.V. Pislegina, O.O. Rusanovskaya, E.A. Silow processing: S. Wollrab analysis: S. Wollrab, E.A. Silow DATA-SPECIFIC INFORMATION FOR: [Baikal_Diatom_biovol_1951to1999.csv] 1. Number of variables: 3 2. Number of cases/rows: 1303 3. Variable List: "Date", sampling date, YYYY-MM-DD "year", sampling year, YYYY "diatom_biovol", total Diatom biovolume, µm³/L 4. Missing data codes: NA 5. Specialized formats or other abbreviations used: DATA-SPECIFIC INFORMATION FOR: [Baikal_Epischurella_biomass_1951to1999.csv] 1. Number of variables: 3 2. Number of cases/rows: 1386 3. Variable List: "Date", sampling date, YYYY-MM-DD "year", sampling year, YYYY "Epibiosum", total Epischurella biomass, mg/L 4. Missing data codes: NA 5. Specialized formats or other abbreviations used: