Sökning: "väggmossa kvävefixering"

Hittade 3 uppsatser innehållade orden väggmossa kvävefixering.

  1. 1. Nitrogen fixation by cyanobacteria associated to feathermosses : a comparison between Scots pine and Norway spruce stands

    Master-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Felicia Dahlgren Lidman; [2018]
    Nyckelord :boreal forest; pinus sylvestris; picea abies; acetylene reduction assay;

    Sammanfattning : The limitations of available nutrients are strong in the boreal forest, especially of nitrogen (N). Due to slow mineralization rate of organic soil nitrogen, caused by low temperatures and acidic soils. Few organisms can fixate atmospheric nitrogen. Among those who have the ability there are some that are common in the boreal forest. LÄS MER

  3. 2. Nitrogen fixation among boreal feather mosses along a clear-cut chronosequence

    Master-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Lisa Wik Persson; [2013]
    Nyckelord :boreal forest; nitrogen fixation; feather moss; Pleurozium schreberi; Hylocomium splendens; cyanobacteria; acetylene reduction; Sweden; boreal skog; kvävefixering; cyanobakterier; acetylen reduktion; Sverige;

    Sammanfattning : The Swedish boreal forests are limited by nitrogen (N) availability. While biological N2 fixation by cyanobacteria hosted by pleurocarpous feather mosses are important sources of N input to natural boreal forest ecosystems, little is known about the patterns of N2 fixation in silvicultural systems. LÄS MER

  4. 3. The effect of moisture, litter and stand age on N fixation in the feathermoss, Pleurozium schreberi

    L3-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Helena Gustafsson; [2008]
    Nyckelord :Pleurozium schreberi; Nitrogen fixation; feathermoss; boreal forest; stand age; moisture; litter; cyano bacteria; succession after fire;

    Sammanfattning : The largest known natural input of nitrogen (N) into the boreal forests occurs through biological fixation by cyanobacteria that live in association with the moss Pleurozium schreberi. There is currently limited knowledge about the factors responsible for the variation in N fixation rates, and specifically what factors drive variability between stands. LÄS MER