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Platform data

Overview

Detailed view

regrowth observation of bracken at circular plots with r = 1m
every new emerging leave inside the plots became a number (single tagged) and were observed over the whole lifetime

regrowth observation of bracken at circular plots with r = 1m
every new emerging leave inside the plots became a number (single tagged) and were observed over the whole lifetime

Ten observation plots of 3.14m2 each were installed randomly within the fire site directly after fire and leaf hight was observed in 4-week intervalls

Fire date: 2005-11-05
Each new emerging frond has its own frond number, which is unique within the plot
Height above surface of specific leave part: the entire height of frond was measured
Composition of bracken species: ca. 70% Pteridium arachnoideum, 30% Pteridium caudatum

Monthly measurements of bracken and Setaria sphacelata cover and leaf height before and after burning or mowing, respectively, on 1m2 plots. Additionally, reference plots without treatment were included in the dataset. Three vegetation types were observed at an abandoned pasture site: pure bracken stands (A),  pure Setaria stands (S),  and mixed stands of both (M). Burning (first burn of the experimental fire area) were applied at 2008-9-25 and mowing was realized between 2008-10-3 and 2008-10-7.

Vegetation dynamics table: The calculated vegetation heights of Setaria sphacelata and bracken consists of averaged single measurements of the largest leaf of each present grass tussock (from soil surface to leaf tip) and the standing height of each present bracken leaf, respectively.
LAI table: LAI measurements were allways taken with the 90° view cap because of the small plot size, 4 points per plot (2 from the left and 2 from the right slope paralell plot border) with 2 above and below measurements each, sensor direction was allways looking from the border into the plot. The given attributes were calculated using the FV2000 Software version 1.11 from LICOR. The 5th sensor ring was excluded before the calculations because the plots were located at steep slopes.