Ferger, Stefan W; Schleuning, Matthias; Böhning-Gaese, Katrin (2018): Data on vegetation structure on the study plots of the Kilimanjaro Research Unit [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.896067, In supplement to: Ferger, Stefan W; Schleuning, Matthias; Hemp, Andreas; Howell, Kim M; Böhning-Gaese, Katrin (2014): Food resources and vegetation structure mediate climatic effects on species richness of birds. Global Ecology and Biogeography, 23(5), 541-549, https://doi.org/10.1111/geb.12151
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Abstract:
We established eight subplots per plot. These subplots consisted of circles with a 20-m radius in densely vegetated habitats (savanna and all forest habitats) and 35.5 m × 35.5 m squares at Helichrysum plots, covering the same sampling area in all habitat types. We quantified vertical vegetation heterogeneity, canopy height and canopy closure on every subplot in the warm dry season (December to March) and in the cold dry season (July to October). To obtain vertical vegetation heterogeneity, we first estimated the vegetation cover in layers at 0, 1, 2, 4, 8, 16, 32 and 64 m above ground and then calculated the Shannon–Wiener diversity index across these eight strata. Canopy height was measured with a laser rangefinder as maximum canopy height above ground. Canopy closure was measured as the mean percentage of closed cells from four spherical canopy densitometer readings taken at the centre of each subplot in the four cardinal directions.
Further details:
Hemp, Andreas: Detailed position of KiLi research plots [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.894721
Project(s):
Kilimanjaro Research Group (KiLi)
Funding:
Coverage:
Median Latitude: -3.217656 * Median Longitude: 37.398906 * South-bound Latitude: -3.390000 * West-bound Longitude: 37.190000 * North-bound Latitude: -3.050000 * East-bound Longitude: 37.680000
Date/Time Start: 2010-12-23T00:00:00 * Date/Time End: 2012-10-04T00:00:00
Event(s):
KiLi_cof1 * Latitude: -3.240000 * Longitude: 37.250000 * Location: Mount Kilimanjaro, Tanzania * Comment: POLETYPE: a middle pole; ECOSYTEM: coffee plantation
Comment:
SP6 recorded several variables related to habitat structure on 8 subplots per plot. However, only 4 of these subplots (at two plots only 3) are located within the actual 50mx50m plot, while the remaining 4 subplots (at two plots 5) are located in the same habitat type and as close to the plot as possible. This dataset contains only information derived from subplots which are located within the actual plot, i.e. from 3-4 subplots per plot.
Methods on:
Closure of canopy area = measured with a canopy densiometer at X subplots with 4 measurements each (north, east, south, west)
Vegetation heterogeneity, vertical = vegetation cover is estimated at 0, 1, 2, 4, 8, 16 and 32 m at X subplots per plot within a radius of 20 m; the Shannon-Diversity-Index is calculated over these estimates for each subplot; the minimum Shannon-Diversity-Index of all subplots is given
Canopy height = canopy height is measured with a laser range finder or estimated (if canopy height was smaller than minimum measuring distance for the LRF)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Böhning-Gaese, Katrin | |||
| 2 | Plot | Plot | Böhning-Gaese, Katrin | |||
| 3 | DATE/TIME | Date/Time | Böhning-Gaese, Katrin | Geocode | ||
| 4 | Number | No | Böhning-Gaese, Katrin | number of subplots inside plot at which measurements were taken | ||
| 5 | Closure of canopy area | Canopy clos | % | Böhning-Gaese, Katrin | mean percent of canopy area within the range of the canopy densiometer, which is covered by vegetation | |
| 6 | Closure of canopy area | Canopy clos | % | Böhning-Gaese, Katrin | standard deviation percent of canopy area within the range of the canopy densiometer, which is covered by vegetation | |
| 7 | Closure of canopy area | Canopy clos | % | Böhning-Gaese, Katrin | maximum percent of canopy area within the range of the canopy densiometer, which is covered by vegetation | |
| 8 | Closure of canopy area | Canopy clos | % | Böhning-Gaese, Katrin | minimum percent of canopy area within the range of the canopy densiometer, which is covered by vegetation | |
| 9 | Vegetation heterogeneity, vertical | Veg het | Böhning-Gaese, Katrin | mean vertical vegetation heterogeneity | ||
| 10 | Vegetation heterogeneity, vertical | Veg het | Böhning-Gaese, Katrin | standard deviation vertical vegetation heterogeneity | ||
| 11 | Vegetation heterogeneity, vertical | Veg het | Böhning-Gaese, Katrin | maximum vertical vegetation heterogeneity | ||
| 12 | Vegetation heterogeneity, vertical | Veg het | Böhning-Gaese, Katrin | minimum vertical vegetation heterogeneity | ||
| 13 | Canopy height, relative proportion | Canopy h | Böhning-Gaese, Katrin | mean of maximum canopy height per subplot | ||
| 14 | Canopy height, relative proportion | Canopy h | Böhning-Gaese, Katrin | SD of maximum canopy height per subplot | ||
| 15 | Canopy height, relative proportion | Canopy h | Böhning-Gaese, Katrin | maximum of maximum canopy height per subplot | ||
| 16 | Canopy height, relative proportion | Canopy h | Böhning-Gaese, Katrin | minimum of maximum canopy height per subplot |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
1792 data points