Atlas of Chrysophycean Cysts

Duff, Katharine E.; Zeeb, Barbara A.; Smol, John P.

doi:10.1007/978-94-017-0809-8

Cited by 137 publications

(91 citation statements)

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“…Samples were screened by SEM (DSM 950, Zeiss West Germany), and all cysts found along transects were photographed and counted. Cysts were morphologically assigned using Duff et al (1995) and Wilkinson et al (2001) as well as the image collection on morphotypes from the 1998 Niedere Tauern data set (Kamenik et al, 2001b;Kamenik and Schmidt, 2005).…”

Section: Chrysophyte Cystsmentioning

confidence: 99%

“…Although information on the responses of total chrysophyte cyst assemblages to several environmental variables exist via work with inference models (transfer functions: e.g., Facher and Schmidt, 1996;Kamenik and Schmidt, 2005;Pla and Anderson, 2005;Pla and Catalan, 2005;Hernández-Almeida et al, 2015), there is relatively little known about the autecology of individual cysts (Duff et al, 1995(Duff et al, , 1997Wilkinson et al, 2001;Betts-Piper et al, 2004). For the majority of the cyst morphotypes, it is still not known which species is forming them Huber et al, 2009).…”

Section: Chrysophyte Cystsmentioning

confidence: 99%

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Impacts of Climate Warming on Alpine Lake Biota Over the Past Decade

Weckström

Huber

et al. 2016

Arctic, Antarctic, and Alpine Research

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Section: Chrysophyte Cystsmentioning

confidence: 99%

Section: Chrysophyte Cystsmentioning

confidence: 99%

Impacts of Climate Warming on Alpine Lake Biota Over the Past Decade

Weckström

Huber

et al. 2016

Arctic, Antarctic, and Alpine Research

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“…Because of the relatively low amount of mineral grains found in the 20 to 80 µm sieve fractions, separation of diatom frustules in these cases was accomplished after one separation within 15 to 20 min processing time. The generally obtained diatom fractions often included trace amounts of pollen, chitin shells, and chrysophycean cysts, which possess particle characteristics closely related to those of frustules (Duff et al 1995;Wilkinson et al 2001), whereas sponge spicules were separated with the mineral fraction. Pollen and chitin relicts can be combusted prior to oxygen isotope investigations.…”

Section: Assessment and Discussionmentioning

confidence: 99%

A new method for the quantitative separation of diatom frustules from lake sediments

Rings

Lücke

Schleser

2004

Limnology & Ocean Methods

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Achieving a purified fraction of diatom frustules from soft sediment samples is an essential requirement for using their biogenic silica as a carrier of paleolimnological and paleoenvironmental information. Because diatom frustules behave hydrodynamically unlike most mineral grains, these types of particles can theoretically be separated in liquids. Based on this principle, a new method has been developed, which employs split-flow thin fractionation (SPLITT) as a tool for separating diatom frustules from other sedimentary particles. The SPLITT channel selected for this study had a length of 20 cm, a breadth of 4 cm, and a height of 371 µm. For optimum results, samples were pretreated, e.g., suspended and wet-sieved prior to any processing with the SPLITT cell. The sample concentrations used in the fractionation process were below 0.1% (w/v) to minimize particle-particle interaction, which affects the quality of the separation. The advantages of SPLITT fractionation over other tested methods are good reproducibility, high throughput by continuous flow, minimum losses of frustules, and minimum contamination of the diatom fraction by minerals or sponge spicules. Separation results from representative sediment samples of different origin, age, and compaction as well as various organic (0.5% to 10% total organic carbon) and biogenic opal contents (1% to 20% biogenic silica) are presented and discussed. They demonstrate that the developed separation technique yields highly purified and, within the processing tolerances, quantitative samples of diatom frustules from bulk lacustrine sediments.

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“…The living cells were studied as soon as possible with an OLYMPUS CH-2 microscope. Identifications and taxonomic treatment were based on Asmund & Kristiansen (1986), Bourrelly (1968), Dillard (2007), Doflein (1923), Duff et al (1995), Ettl (1968Ettl ( , 1970, Huber-Pestalozzi (1941), Kristiansen (2002), Nicholls (1981), Reverdin (1919), Siver (1991), Skuja (1948Skuja ( , 1956Skuja ( , 1964 and Starmach (1985).…”

Section: Methodsmentioning

confidence: 99%

Chrysophytes from some lakes and peat-bogs in the eastern Pyrenees, Catalonia (Spain)

Cambra

2010

Biologia

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Abstract:The results of a phycological study on the chrysophyte flora in the eastern Pyrenees (Catalonia, Spain) are presented. The studied area is located between 1600 and 2600 m above sea level, on primarily acid substrate. A total of 34 taxa have been identified, 25 of which are new or very rarely known in Spain. Information about the cell morphology and ecological data of the studied aquatic systems are presented.

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Atlas of Chrysophycean Cysts

Cited by 137 publications

References 0 publications

Impacts of Climate Warming on Alpine Lake Biota Over the Past Decade

Impacts of Climate Warming on Alpine Lake Biota Over the Past Decade

A new method for the quantitative separation of diatom frustules from lake sediments

Chrysophytes from some lakes and peat-bogs in the eastern Pyrenees, Catalonia (Spain)

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