11 research outputs found

    Variation in needle retention of scots pine in relation to leaf morphology, nitrogen conservation and tree age

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    http://www.ester.ee/record=b1786916~S1*es

    Comparative study on Ecological Characteristics among Circumpolar Forest Biomes

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    第4回極域科学シンポジウム横断セッション:[IA] 「急変する北極気候システム及びその全球的な影響の総合的解明」―GRENE北極気候変動研究事業研究成果報告2013―11月12日(火) 国立極地研究所 2階大会議

    Männiokaste püsivuse retrospektiivne analüüs Eesti ja Soome näiteil

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    https://www.ester.ee/record=b3526568*es

    Variation in needle retention of Scots pine in relation to leaf morphology, nitrogen conservation and tree age (väitöskirja)

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    väitöskirj

    Preparation of testate amoebae samples affects water table depth reconstructions in peatland palaeoecological studies

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    In peatland palaeoecological studies, the preparation of peat samples for testate amoebae (TA) analysis involves boiling of samples and microsieving them through a 15-μm sieve. We studied the effect of these preparation stages on the estimation of TA assemblages and on the reconstruction of water table depths (WTD). Our results indicate that the TA assemblages of boiled and unboiled samples are not significantly different, while microsieving reduces the concentration of small TA taxa and results in significantly different TA assemblages. The differences between microsieved and unsieved TA assemblages were reflected also in predicted values of WTD, which indicated drier conditions in case of unsieved samples than in microsieved samples. We conclude that the boiling of samples might be omitted if TA are extracted from the fresh peat samples. Microsieving may lead to erroneous palaeoecological WTD reconstructions and should be avoided if small TA taxa are present in samples
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