Fig. 6 | Scientific Reports

Fig. 6

From: Species richness variation in marine and terrestrial fauna across widespread, fragmented territories: assessing inherent challenges of data scarcity at local and regional scales

Fig. 6

Accessibility bias. Results from the calculate_bias function (Sampbias package) which estimates marine (a) and terrestrial (b) expected occurrences based on accessibility, illustrating the impact of various infrastructure types on species sampling efforts. (Left) The posterior weight shows the relative importance of anthropic accessibility factors: roads, ports/airports, cities, and waterbodies—on sampling efforts in both ecosystems. (Right) The sampling rate, i.e., the expected number of occurrences, as a function of distance from accessibility factors is depicted for marine (a) and terrestrial (b) environments.

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