The SABAP2 "Four Degrees Blue" project: the challenge to obtain at least 11 checklists in 576 pentads
... The Four Degrees Blue challenge was launched on 22 August 2015. At this stage 201 checklists were needed from 111 pentads; the northwest degree cell needed the most checklists, 109, and the southeast degree cell needed only 11. The aim was to have all remaining dark green pentads on the Gauteng coverage map turn to blue with 11 atlas checklists ... the last remaining pentads turned blue on 29 June 2016.
The SABAP2 "Four Degrees Blue" project: the challenge to obtain at least 11 checklists in 576 pentads.
Biodiversity Observations, [S.l.], p. 1 - 7, july 2016.
ISSN 2219-0341. Available at: <https://journals.uct.ac.za/index.php/BO/article/view/332>. Date accessed: 25 apr. 2019.
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