Latitudinal gradients of estimated tree species richness and co-limitation of drivers
a, The LDG of tree species richness per hectare was first empirically derived for all 0.025° pixels within the global forest range and aggregated by latitude (Methods). Data are presented as mean values (solid lines) ± standard deviation (shaded areas) and then compared to LDG predicted by the MTB based on local mean annual temperatures. b, The co-limitation illustrated here was the product of LDG and the percentage prevalence of dominant drivers by latitude (Fig. 5).

Latitudinal gradients of estimated tree species richness and co-limitation of drivers a, The LDG of tree species richness per hectare was first empirically derived for all 0.025° pixels within the global forest range and aggregated by latitude (Methods). Data are presented as mean values (solid lines) ± standard deviation (shaded areas) and then compared to LDG predicted by the MTB based on local mean annual temperatures. b, The co-limitation illustrated here was the product of LDG and the percentage prevalence of dominant drivers by latitude (Fig. 5).

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The latitudinal diversity gradient (LDG) is one of the most recognized global patterns of species richness exhibited across a wide range of taxa. Numerous hypotheses have been proposed in the past two centuries to explain LDG, but rigorous tests of the drivers of LDGs have been limited by a lack of high-quality global species richness data. Here we...

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... While, a very less tree species richness (10 spp.) with a comparable total tree density of 255 ind. ha −1 and slightly high dominance (10.11 m 2 ha −1 ) were reported in high fire zones in tropical deciduous forests of Bhoramdeo Wildlife Sanctuary, Chhattisgarh (Jhariya et al., 2014) and are primarily driven by latitudinal gradients (Liang et al., 2022). Altered species composition, diversity, and reduced seedling density were also been reported in areas of dry deciduous forest with the shortest fire return intervals compared to forest patches with lower fire frequency in the moist deciduous forests of Nilgiri Biosphere Reserve, Western Ghats (Kodandapani et al., 2009). ...
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