Fig. 1: Distribution of field sampling and study citations across natural terrestrial habitats in the tropics. | Nature Communications

Fig. 1: Distribution of field sampling and study citations across natural terrestrial habitats in the tropics.

From: Gaps in tropical science from unrepresentative distribution of sampling and citation across natural terrestrial environments

Fig. 1: Distribution of field sampling and study citations across natural terrestrial habitats in the tropics.

Density of sampling locations (A) and citations (B) per unit land area across natural terrestrial habitats in the tropics. Spatial resolution is 3° (~ 330 km). Maps were produced from a database of 2738 articles, representing 6370 sampling locations and 89,468 citations. The full extent of tropical biomes is highlighted in dark gray, using widely accepted boundaries23. To account for transition zones between the biomes, we added a buffer of 100 km around the formally defined tropical area. Overall, the study area consisted of 52.9 × 106 km-2 of terrestrial land (ca. 36 % of the global land area). Base map from Natural Earth98.

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