10.1594/PANGAEA.951658Boersma, MaartenMaartenBoersma0000-0003-1010-026XRenz, JasminJasminRenzPANGAEA2024biological time seriesZooplanktonDATE/TIMEDEPTH, waterCopepoda, naupliiAcartia spp.Calanus spp.Centropages spp.Pseudocalanus spp.Temora longicornisOithona spp.CyclopoidaHarpacticoidaCopepoda, otherAmphipodaCirripediaCladoceraCumaceaDecapoda, zoeaDecapoda, megalopaEuphausiaceaIsopodaMysidaOstracodaPantopodaAnnelidaAnthozoaAppendiculariaBryozoaCephalochordataChaetognathaCoelenterataCtenophoraEchinodermata, adultEchinodermata, juvenileEchinodermata, larvaeEggs indeterminataFisch, eggsFish larvaeHydrozoaMolluscaNemerteaPhoronidaPlatyhelminthesRotiferaScyphozoaTunicataMesozooplankton, other groupsMonitoringCounting >150 µm fractionLTER_HelgolandRoadsMarine Station HelgolandMacrobenthic long-term series in the German Bight (LTER_Benthos)Shelf Seas Systems Ecology @ AWI (former Biologische Anstalt Helgoland) (BAH)2020-01-06T09:41:00/2020-12-30T08:15:00Dataset10.1594/PANGAEA.8730322200 data pointstext/tab-separated-valuesLicensing unknown: Please contact principal investigator/authors to gain access and request licensing termsData access is restricted (moratorium, sensitive data, license constraints)Samples to detemine zooplankton abundance were collected as part of the Helgoland Roads long-term data series in 2020. Zooplankton were sampled at the "Kabeltonne" site (54°11.3′N, 7°54.0′E) using an oblique haul with a 150µm hand net (Apstein, Hydrobios, Kiel) and preserved in 4% formaldehyde (buffered with Borax) to allow for storage and later examination. Sampling volume was calculated with a mechanic flowmeter (Hydrobios, Kiel). Samples were counted either as whole or as subsamples depending on the density. However, at least 60 individuals of each key species were counted per subsample to ensure counting of a representative part of the sample. Species were identified to the lowest possible taxonomic level using a stereomicroscope (Leica M205C). If identification to the species level was not possible, the next identifiable taxonomic category was assigned.The data provided here represents a summary of species and taxonomic groups. Species and groups added together are shown in the parameter comments (see "Further Details").
Empty cells = taxon was not investigated in this sample.7.954.188German Bight, North Sea