Essays about: "transekt"

Showing result 1 - 5 of 6 essays containing the word transekt.

  1. 1. Quantification of Terrestrial CO2 Sources to a Headwater Streamin a Boreal Forest Catchment

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Elin Hultin Eriksson; [2016]
    Keywords : Deep soil respiration; headwater streams; lateral CO2 export; CO2 storage; riparian zone; Krycklan; Djup jordrespiration; bäckar; lateral CO2-export; CO2-lagring; riparianzon; Krycklan;

    Abstract : Carbon Dioxide (CO2) emissions from streams are a significant component of the global carbon cycle.Terrestrial export of CO2 through runoff is increasingly recognized as a major source of CO2 in boreal headwater streams. READ MORE

  2. 2. Environmental variables determining the occurrence of Cladonia parasitica and Hertelidea botryosa, two boreal lichens confined to wood

    University essay from SLU/Dept. of Ecology

    Author : Ingela Källén; [2015]
    Keywords : Hertelidea botryosa; Cladonia parasitica; biodiversity; nature conservation; forestry;

    Abstract : Biodiversity is essential for human well-being and it is defined as the genetic variation within species and the variety of species and ecosystems. Biodiversity provides several ecosystem services which are necessary for human beings but there are different threats towards the biodiversity. READ MORE

  3. 3. Rönn, asp, sälg och ek i skogslandskapet : effekter av skogsbruk och bete i nordöstra Uppland

    University essay from SLU/Dept. of Ecology

    Author : Filip Ånöstam; [2015]
    Keywords : RASE; rönn; asp; sälg; ek; betestryck; rekrytering; transekt; provyta; grundyta; signifikans;

    Abstract : Under de senaste årtiondena har mängden rönn, asp, sälg, ek (RASE) minskat i de svenska skogarna. RASE är älgens favoritföda och bär en stor biologisk mångfald vilket gör att minskningen är ett stort problem. Därför är mitt syfte med detta arbete att undersöka vad som påverkar mängden och rekrytering/förekomst av dessa arter. READ MORE

  4. 4. A study of Mg/Ca in benthic foramini-fera sampled across a large salinity gradient

    University essay from Lunds universitet/Geologiska institutionen

    Author : Johan Gabrielsson; [2014]
    Keywords : Foraminifera; Mg Ca; temperature; salinity; calibration equations; Earth and Environmental Sciences;

    Abstract : Multiple studies have found a link between Mg/Ca in foraminifera and various environmental factors (e.g Billups and Schrag, 2002; Dissard et al., 2010; Ferguson et al., 2008). READ MORE

  5. 5. Is it possible to reconstruct local pre-sence of pine on bogs during the Ho-locene based on pollen data? : a study based on surface and stratigraphical samples from three bogs in southern Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Isabelle Timms Eliasson; [2014]
    Keywords : southern Sweden; vegetation cover; bog; Pinus; pollen; Earth and Environmental Sciences;

    Abstract : Horizons rich in subfossil stumps and roots of Scots pine (Pinus sylvestris) are frequently found in stratigraphies of northern European peatlands, providing clear evidence of Holocene periods with favourable conditions for bog-pine growth. The pines could only grow when bog-surface wetness was sufficiently low, and the presence of their remains is therefore a good indicator of past climatic conditions, mainly precipitation. READ MORE