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  • Ökosystem  (2)
  • 551.48  (1)
  • Achnanthes minutissima, biomass, wet mass; Ankyra sp., biomass, wet mass; Aphanizomenon flos-aquae, biomass, wet mass; Aphanocapsa sp., biomass, wet mass; Asterionella formosa, biomass, wet mass; Bacillariophyceae, biomass, wet mass; BIBS; Botryococcus braunii, biomass, wet mass; Bridging in Biodiversity Science; Ceratium hirundinella, biomass, wet mass; Chlamydomonas sp., biomass, wet mass; Chlorella sp., biomass, wet mass; Chlorococcales sp., biomass, wet mass; Chlorophyceae, biomass, wet mass; Chroococcus sp., biomass, wet mass; Chroococus distans, biomass, wet mass; Chrysochromulina parva, biomass, wet mass; Chrysoflagelata spp., biomass, wet mass; Chrysophyceae, biomass, wet mass; Chrysophyceae cysts, biomass, wet mass; Cimbella sp., biomass, wet mass; Climate change; Climate driven Changes in Biodiversity of Microbiota; Closterium aciculare, biomass, wet mass; Closterium acutum var. variabile, biomass, wet mass; Closterium cynthia, biomass, wet mass; Closterium gracile, biomass, wet mass; Coelastrum sp., biomass, wet mass; Coelosphaerium kuetzingianum, biomass, wet mass; Coenocystis policocca, biomass, wet mass; Cosmarium bioculatus, biomass, wet mass; Cosmarium botrytis, biomass, wet mass; Cosmarium moniliforme var. moniliforme, biomass, wet mass; Cosmarium phaseolus, biomass, wet mass; Cosmarium reniforme, biomass, wet mass; Cosmarium turpinii, biomass, wet mass; Crucigenia rectangularis, biomass, wet mass; Cryptomonas sp., biomass, wet mass; Cryptophyceae, biomass, wet mass; Cyanophyceae, biomass, wet mass; DATE/TIME; Day of experiment; deep chlorophyll maximum (DCM); Defined after Reynolds et al. (2002) and Padisák et al. (2009); DEPTH, water; Description; Diatoms, centrales, biomass, wet mass; Dinobryon acuminatum, biomass, wet mass; Dinobryon cysts, biomass, wet mass; Dinobryon divergens, biomass, wet mass; Dinobryon sociale, biomass, wet mass; Dinophyceae, biomass, wet mass; disturbance; Dolichospermum akinete, biomass, wet mass; Dolichospermum circinalis, biomass, wet mass; Dolichospermum flosaquae, biomass, wet mass; Dolichospermum lemmermanni, biomass, wet mass; Dolichospermum macrospora, biomass, wet mass; Dolichospermum planctonicum, biomass, wet mass; Dolichospermum solitaria, biomass, wet mass; Dolichospermum sp., biomass, wet mass; Dolichospermum spp., biomass, wet mass; Dolichspermum mendotae, biomass, wet mass; Elakatothrix gelatinosa, biomass, wet mass; enclosure experiment; Enclosure experiment; Epipyxis sp., biomass, wet mass; Epithemia sp., biomass, wet mass; Euastrum gemmatum, biomass, wet mass; Eudorina sp., biomass, wet mass; Fragilaria crotonensis, biomass, wet mass; Fragilaria cyclopum, biomass, wet mass; Fragilaria sp., biomass, wet mass; Franceia sp., biomass, wet mass; Germany; Gloeocapsa sp., biomass, wet mass; Golenkinia sp., biomass, wet mass; Gymnodinium helveticum, biomass, wet mass; Gymnodinium lacustre, biomass, wet mass; Haptophyceae, biomass, wet mass; Hormogonales sp., biomass, wet mass; Katablepharis ovalis, biomass, wet mass; Kephyrion sp., biomass, wet mass; Lagerheimia sp., biomass, wet mass; Lake_Stechlin; Mallomonas sp., biomass, wet mass; Merismopedia sp., biomass, wet mass; Mesocosm label; mesocosm study; Microcystis spp., biomass, wet mass; Monoraphidium contortum, biomass, wet mass; Monoraphidium griffithii, biomass, wet mass; Monoraphidium sp., biomass, wet mass; Mougeotia sp., biomass, wet mass; Navicula sp., biomass, wet mass; Nephrocytium limneticum, biomass, wet mass; NITROLIMIT; Nostocales, biomass, wet mass; Ochromonas sp., biomass, wet mass; Oocystis borgei, biomass, wet mass; Oocystis lacustris, biomass, wet mass; Oxygen/Nitrogen ratio; Pandorina morum, biomass, wet mass; Pediastrum boryanum, biomass, wet mass; Pediastrum duplex, biomass, wet mass; Peridinium aciculiferum, biomass, wet mass; Peridinium sp., biomass, wet mass; Phacotus lenticularis, biomass, wet mass; Phytoplankton, biomass, wet mass; Phytoplankton, functional group, biomass, wet mass; phytoplankton traits; Picocyanobacteria, biomass, wet mass; Planktothrix rubescens, biomass, wet mass; Pseudanabaena sp., biomass, wet mass; Pseudokephyrion ellipsoideum, biomass, wet mass; Pseudopedinella, biomass, wet mass; Pseudosphaerocystis sp., biomass, wet mass; Pseudotetraedriella kamillae, biomass, wet mass; Quadrigula pfitzeri, biomass, wet mass; Quantitative phytoplankton method (Utermöhl, 1958); Radiococcus sp., biomass, wet mass; Radiocystis sp., biomass, wet mass; Rhabdogloea scendesmoides, biomass, wet mass; Rhodomonas lacustris, biomass, wet mass; Rhodomonas lens, biomass, wet mass; Rhopalodia gibba, biomass, wet mass; Scenedesmus aculeolatus, biomass, wet mass; Scenedesmus armatus, biomass, wet mass; Scenedesmus costato-granulatus, biomass, wet mass; Scenedesmus ecornis, biomass, wet mass; Scenedesmus sp., biomass, wet mass; Schroederia robusta, biomass, wet mass; Sphaerocystis sp., biomass, wet mass; Spyrogyra sp., biomass, wet mass; Staurastrum cf. planktonicum, biomass, wet mass; Staurastrum paradoxum, biomass, wet mass; Stauridium tetras, biomass, wet mass; Stickstofflimitation in Binnengewässern; Synedra sp., biomass, wet mass; Synedra ulna, biomass, wet mass; TemBi; Tetraedron minimum, biomass, wet mass; Trachydiscus sexangulatus, biomass, wet mass; Treatment; Treubaria sp., biomass, wet mass; Ulothrix sp., biomass, wet mass; Zygnema sp., biomass, wet mass  (1)
Keywords
Language
Years
  • 1
    Keywords: Forschungsbericht ; Ökosystem
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (33 Seiten, 1,39 MB) , Diagramme
    Language: German
    Note: Förderkennzeichen BMBF 01LC1501G , Verbundnummer 01167126 , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
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  • 2
    Keywords: Forschungsbericht ; Ökosystem
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (32 Seiten, 926,60 KB)
    Language: German
    Note: Förderkennzeichen BMBF 01LC1501A-H , Verbundnummer 01167126 , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
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  • 3
    Publication Date: 2021-12-06
    Description: We describe a low-cost three-dimensional underwater particle tracking velocimetry system to directly measure particle settling rate and flux in low-turbulence aquatic environments. The system consists of two waterproof cameras that acquire stereoscopic videos of sinking particles at 48 frames s−1 over a tunable sampling volume of about 45 × 25 × 24 cm. A dedicated software package has been developed to allow evaluation of particle velocities, concentration and flux, but also of morphometric parameters such as particle area, sinking angle, shape irregularity, and density. Our method offers several advantages over traditional approaches, like sediment trap or expensive in situ camera systems: (1) it does not require beforehand particle collection and handling; (2) it is not subjected to sediment trap biases from turbulence, horizontal advection, or presence of swimmers, that may alter particulate load and flux; (3) the camera system enables faster data processing and flux computation at higher spatial resolution; (4) apart from the particle settling rates, the particle size distribution, and morphology is determined. We tested the camera system in Lake Stechlin (Germany) in low turbulence and mean flow, and analyzed the morphological properties and settling rates of particles to determine their sinking behavior. The particle flux assessed from conventional sediment trap measurements agreed well with that determined by our system. By this, the low-cost approach demonstrated its reliability in low turbulence environments and a strong potential to provide new insights into particulate carbon transport in aquatic systems. Extension of the method to more turbulent and advective conditions is also discussed.
    Keywords: 551.48 ; aquatic environments ; particle velocity ; tracking system
    Language: English
    Type: map
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  • 4
    Publication Date: 2024-06-12
    Description: We simulated an experimental summer storm in large-volume (~1200 m3, ~16m depth) enclosures in Lake Stechlin (https://www.lake-lab.de) by mixing deeper water masses from the meta- and hypolimnion into the mixed layer (epilimnion). The mixing included the disturbance of a deep chlorophyll maximum (DCM) which was present at the same time of the experiment in Lake Stechlin and situated in the metalimnion of each enclosure during filling. Phytoplankton community composition and biomass of phytoplankton functional groups were monitored for 42 days after the experimental disturbance event in addition to water physical variables and water chemistry. Mixing disrupted the thermal stratification, increased concentrations of dissolved nutrients and CO2 and changed light conditions in the epilimnion. Mixing stimulated phytoplankton growth and changes phytoplankton community composition, resulting in higher biomass of Cryptophyceae (within one week after mixing), Nostocales (mainly Dolichospermum sp.; 2-3 weeks after mixing) and thereafter Bacillariophyceae (mainly Asterionella sp.).
    Keywords: Achnanthes minutissima, biomass, wet mass; Ankyra sp., biomass, wet mass; Aphanizomenon flos-aquae, biomass, wet mass; Aphanocapsa sp., biomass, wet mass; Asterionella formosa, biomass, wet mass; Bacillariophyceae, biomass, wet mass; BIBS; Botryococcus braunii, biomass, wet mass; Bridging in Biodiversity Science; Ceratium hirundinella, biomass, wet mass; Chlamydomonas sp., biomass, wet mass; Chlorella sp., biomass, wet mass; Chlorococcales sp., biomass, wet mass; Chlorophyceae, biomass, wet mass; Chroococcus sp., biomass, wet mass; Chroococus distans, biomass, wet mass; Chrysochromulina parva, biomass, wet mass; Chrysoflagelata spp., biomass, wet mass; Chrysophyceae, biomass, wet mass; Chrysophyceae cysts, biomass, wet mass; Cimbella sp., biomass, wet mass; Climate change; Climate driven Changes in Biodiversity of Microbiota; Closterium aciculare, biomass, wet mass; Closterium acutum var. variabile, biomass, wet mass; Closterium cynthia, biomass, wet mass; Closterium gracile, biomass, wet mass; Coelastrum sp., biomass, wet mass; Coelosphaerium kuetzingianum, biomass, wet mass; Coenocystis policocca, biomass, wet mass; Cosmarium bioculatus, biomass, wet mass; Cosmarium botrytis, biomass, wet mass; Cosmarium moniliforme var. moniliforme, biomass, wet mass; Cosmarium phaseolus, biomass, wet mass; Cosmarium reniforme, biomass, wet mass; Cosmarium turpinii, biomass, wet mass; Crucigenia rectangularis, biomass, wet mass; Cryptomonas sp., biomass, wet mass; Cryptophyceae, biomass, wet mass; Cyanophyceae, biomass, wet mass; DATE/TIME; Day of experiment; deep chlorophyll maximum (DCM); Defined after Reynolds et al. (2002) and Padisák et al. (2009); DEPTH, water; Description; Diatoms, centrales, biomass, wet mass; Dinobryon acuminatum, biomass, wet mass; Dinobryon cysts, biomass, wet mass; Dinobryon divergens, biomass, wet mass; Dinobryon sociale, biomass, wet mass; Dinophyceae, biomass, wet mass; disturbance; Dolichospermum akinete, biomass, wet mass; Dolichospermum circinalis, biomass, wet mass; Dolichospermum flosaquae, biomass, wet mass; Dolichospermum lemmermanni, biomass, wet mass; Dolichospermum macrospora, biomass, wet mass; Dolichospermum planctonicum, biomass, wet mass; Dolichospermum solitaria, biomass, wet mass; Dolichospermum sp., biomass, wet mass; Dolichospermum spp., biomass, wet mass; Dolichspermum mendotae, biomass, wet mass; Elakatothrix gelatinosa, biomass, wet mass; enclosure experiment; Enclosure experiment; Epipyxis sp., biomass, wet mass; Epithemia sp., biomass, wet mass; Euastrum gemmatum, biomass, wet mass; Eudorina sp., biomass, wet mass; Fragilaria crotonensis, biomass, wet mass; Fragilaria cyclopum, biomass, wet mass; Fragilaria sp., biomass, wet mass; Franceia sp., biomass, wet mass; Germany; Gloeocapsa sp., biomass, wet mass; Golenkinia sp., biomass, wet mass; Gymnodinium helveticum, biomass, wet mass; Gymnodinium lacustre, biomass, wet mass; Haptophyceae, biomass, wet mass; Hormogonales sp., biomass, wet mass; Katablepharis ovalis, biomass, wet mass; Kephyrion sp., biomass, wet mass; Lagerheimia sp., biomass, wet mass; Lake_Stechlin; Mallomonas sp., biomass, wet mass; Merismopedia sp., biomass, wet mass; Mesocosm label; mesocosm study; Microcystis spp., biomass, wet mass; Monoraphidium contortum, biomass, wet mass; Monoraphidium griffithii, biomass, wet mass; Monoraphidium sp., biomass, wet mass; Mougeotia sp., biomass, wet mass; Navicula sp., biomass, wet mass; Nephrocytium limneticum, biomass, wet mass; NITROLIMIT; Nostocales, biomass, wet mass; Ochromonas sp., biomass, wet mass; Oocystis borgei, biomass, wet mass; Oocystis lacustris, biomass, wet mass; Oxygen/Nitrogen ratio; Pandorina morum, biomass, wet mass; Pediastrum boryanum, biomass, wet mass; Pediastrum duplex, biomass, wet mass; Peridinium aciculiferum, biomass, wet mass; Peridinium sp., biomass, wet mass; Phacotus lenticularis, biomass, wet mass; Phytoplankton, biomass, wet mass; Phytoplankton, functional group, biomass, wet mass; phytoplankton traits; Picocyanobacteria, biomass, wet mass; Planktothrix rubescens, biomass, wet mass; Pseudanabaena sp., biomass, wet mass; Pseudokephyrion ellipsoideum, biomass, wet mass; Pseudopedinella, biomass, wet mass; Pseudosphaerocystis sp., biomass, wet mass; Pseudotetraedriella kamillae, biomass, wet mass; Quadrigula pfitzeri, biomass, wet mass; Quantitative phytoplankton method (Utermöhl, 1958); Radiococcus sp., biomass, wet mass; Radiocystis sp., biomass, wet mass; Rhabdogloea scendesmoides, biomass, wet mass; Rhodomonas lacustris, biomass, wet mass; Rhodomonas lens, biomass, wet mass; Rhopalodia gibba, biomass, wet mass; Scenedesmus aculeolatus, biomass, wet mass; Scenedesmus armatus, biomass, wet mass; Scenedesmus costato-granulatus, biomass, wet mass; Scenedesmus ecornis, biomass, wet mass; Scenedesmus sp., biomass, wet mass; Schroederia robusta, biomass, wet mass; Sphaerocystis sp., biomass, wet mass; Spyrogyra sp., biomass, wet mass; Staurastrum cf. planktonicum, biomass, wet mass; Staurastrum paradoxum, biomass, wet mass; Stauridium tetras, biomass, wet mass; Stickstofflimitation in Binnengewässern; Synedra sp., biomass, wet mass; Synedra ulna, biomass, wet mass; TemBi; Tetraedron minimum, biomass, wet mass; Trachydiscus sexangulatus, biomass, wet mass; Treatment; Treubaria sp., biomass, wet mass; Ulothrix sp., biomass, wet mass; Zygnema sp., biomass, wet mass
    Type: Dataset
    Format: text/tab-separated-values, 17848 data points
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