Araba Bioscan

Araba Bioscan 12-19 February 2021

Data for the period 12-19 February 2021

See the Araba Bioscan Project page for background information on the project and methods.


This week, I’ve returned to 95% isopropyl as the sampling medium. Once results back from samples collected using both isopropyl and denatured ethanol, it will be easier to decide which to use longer term.

After many weeks during which Ichneumonidae were prominent, there was only one (I think) this week (and also no Blattodea). All the ichneumonid species that have been prominent for some weeks were absent. Compare samples from the last month, for which I have photographed every ichneumonid I found (based on my current identifications, 16, 3, 11 and 12 individuals in the last four weeks).

Sample images

Sample for 12-19 February 2021

Environmental measurements

Sunrise and sunset sourced from Sunrise-Sunset and relate to the listed date. All other measurements are calculated for the 24-hour period to 09:00.

Date13 Feb14 Feb15 Feb16 Feb17 Feb18 Feb19 Feb
Mean temperature (°C)19.918.919.819.319.818.119.0
Max temperature (°C)25.033.331.930.531.728.228.3
Min temperature (°C)18.011.812.911.714.013.813.5
Mean humidity (%)86.871.659.558.468.766.069.0
Max humidity (%)
Min humidity (%)
Mean soil moisture (%)42.737.132.129.528.227.327.0
Max soil moisture (%)
Min soil moisture (%)
Mean relative pressure (hPa)1009.81015.11019.21023.11024.81026.31025.4
Max relative pressure (hPa)1011.31019.31022.11025.11026.51027.51027.8
Min relative pressure (hPa)1008.81010.31016.71021.41022.61024.51023.8
Mean absolute pressure (hPa)932.4937.7941.8945.7947.4948.9948.0
Max absolute pressure (hPa)933.9941.9944.7947.7949.1950.1950.4
Min absolute pressure (hPa)931.4932.9939.3944.0945.2947.1946.4
Daily rainfall (mm)
Sunshine hours5.
Max solar radiation (W/m2)391.51054.5986.01032.51181.81115.71162.2
Max UV index310910111011
Mean wind speed (km/h)
Mean wind direction99.881.565.159.979.479.272.1
Max gust (km/h)

Leave a Reply

Your email address will not be published. Required fields are marked *