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 Otjiamongombe (S05) - Time series of plant diversity
Graphical representation of diversity patterns in space and time

Species richness [Diversity]


Species richness of all grass species on 1000 m² over the years (ID=117)
(created by Ben Strohbach)
The Boxplots shows the variation in species richness of all grass species on 20 plots of 1000 m² in size at the biodiversity observatory S05. Boxplot represents: whiskers = Minimum & Maximum, box= lower and upper Quartile, horizontal bold line = median.

Shannon diversity [Diversity]


Variance of Shannon diversity index for grass species on 1000 m² plots over the years. (ID=115)
(created by Ben Strohbach)
The box plots shows the variation in the Shannon diversity index of all grass species on 20 plots of 1000 m2 in size at the biodiversity observatory S05. Box plot represents: whiskers = Minimum & Maximum, box= lower and upper Quartile, horizontal bold line = median.

Simpson diversity [Diversity]


Inverse Simpson diversity index of all grass species on 1000 m² over the years. (ID=116)
(created by Ben Strohbach)
The box plots shows the variation in the inverse Simpson diversity index of all grass species on 20 plots of 1000 m2 in size at the biodiversity observatory S05. Box plot represents: whiskers = Minimum & Maximum, box= lower and upper Quartile, horizontal bold line = median.

Pielou's evenness [Diversity]


Variance of Pielou's Evenness index for grass species on 1000 m² plots over the years. (ID=114)
(created by Ben Strohbach)
The Boxplots shows the variation in the evenness value for all grass species on 20 plots of 1000 m2 in size at the biodiversity observatory S05. Boxplot represents: whiskers = Minimum & Maximum, box= lower and upper Quartile, horizontal bold line = median.

Dominance [Diversity]


Variance of the Dominance index for grass species on 1000 m² plots over the years. (ID=113)
(created by Ben Strohbach)
The Boxplots shows the variation in the Dominance value for all grass species on 20 plots of 1000 m2 in size at the biodiversity observatory S05. Boxplot represents: whiskers = Minimum & Maximum, box= lower and upper Quartile, horizontal bold line = median.

Rainfall [Climate]


Total rainfall (mm) per year for the observatory S05 Erichsfelde. (ID=111)
(created by Ben Strohbach)
Quality of the rainfall season, calculated for a rainfall season from August to July in the following year, based on data from SASSCAL Weathernet and gap-filled with WorldClim historic data (Fick and Hijmans, 2017). The quality of the season is based on criteria developed by Gibbs and Maher (1967) and Botha (1999) and indicated by colour-coding: Brown: extreme drought, precipitation below the 10th percentile (220 mm), light-brown: drought, precipitation below the 40th percentile (348 mm), green: normal, precipitation between the 40th and 70th percentile (348 and 409 mm), blue-green: wet, precipitation above the 70th percentile (409 mm), and blue: extreme wet years, precipitation above the 90th percentile (546 mm). The stippled line represents the long-term median rainfall (367 mm).

SPEI [Climate]


Standardised Precipitation-Evapotranspiration Index (SPEI) for a 12-months interval. (ID=77)
(created by Ben Strohbach)
The SPEI index is a standardised monthly climatic balance computed as the difference between the cumulative precipitation and the potential evapotranspiration (Vicente-Serrano et al. 2010). For this presentation the SPEI value per month is based on the accumulated values of the previous 12 months. Red bars indicate drought, blue bars humid conditions.