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Growth and morphological variation as a response to changing environmental factors in two Arctic species of Raphidonema (Trebouxiophyceae) from snow and soil

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F05%3A00027729" target="_blank" >RIV/67985939:_____/05:00027729 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Growth and morphological variation as a response to changing environmental factors in two Arctic species of Raphidonema (Trebouxiophyceae) from snow and soil

  • Original language description

    Two Arctic species of Raphidonema, a weakly filamentous green alga, were compared on the basis of their growth and morphology response to varied environmental factors. The strain of R. nivale was isolated from snow and R. sempervirens from soil collectedin Svalbard. Morphological variability was evaluated in both strains, with emphasis laid on pleiomorphism of R. nivale. Growth characteristics in varied temperature and light were compared. Field observations were performed in the summer season 2003 atWerenskiöld glacier, southwest Spitsbergen. In both strains, temperature and light affects shape and size of cells, and in R. nivale also the number of cells in filament, probably by modifying growth and division rates. The strain of R. nivale grew bestat 12°C and 200 ?mol.m-2.s-1, R. sempervirens at 18°C and 50 ?mol.m-2.s-1. In snow, R. nivale only appeared after strong wind had brought soil on the snow surface, and its concentrations decreased very rapidly. Cells of R. nivale in sn...

  • Czech name

    Růst a morfologické změny v závislosti na změnách prostředí u dvou Arctických druhů rodu Raphidonema (Trebouxiophyceae) ze sněhu a půdy

  • Czech description

    U dvou druhů zelených vláknitých řas, Raphidonema nivale izolované ze sněhu a R. sempervirens izolované z půdy v Arktidě (souostroví Svalbard), byla sledována závislost morfologických znaků na měnících se ekologických podmínkách (teplota a ozáření). U zkoumaných druhů bylo zjištěno, že se liší ve svých ekologických nárocích a že R. nivale, v minulosti považovaná za sněžný druh, pravděpodobně běžně roste v půdě. R. nivale je v průběhu katabatických větrů dopravován do sněžných polí, kde přežívá jen po omezené období.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    EF - Botany

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/ME%20576" target="_blank" >ME 576: Ecological and physiological principals of acclimatisation/adaptation of seaweeds on low temperature and x-adiation</a><br>

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2005

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Polar Biology

  • ISSN

    0722-4060

  • e-ISSN

  • Volume of the periodical

    28

  • Issue of the periodical within the volume

    -

  • Country of publishing house

    DE - GERMANY

  • Number of pages

    10

  • Pages from-to

    558-567

  • UT code for WoS article

  • EID of the result in the Scopus database