Extended Data Fig. 6: Changes in relative abundance differed by land-cover type for the different guilds.
From: Intensive farming drives long-term shifts in avian community composition
a–l, Changes in the relative abundance differed by land-cover type for insectivores (a–c), nectarivores (d–f), granivores (g–i) and frugivores (j–l). a, d, g, j, Natural forest. b, e, h, k, Diversified agriculture. c, f, i, l, Intensive agriculture. f, i, Significant trends in relative abundance occurred only in intensive monocultures, where a nearly 30% decline in the relative abundance of nectarivores (f) and a 20% increase in relative abundance of granivores (i) was found during the 18-year study. In each plot, black lines depict the mean temporal trend in the relative abundance of each guild from 2000 to 2018 modelled as a first-order random walk process in INLA. Trends are centred around zero, shading represents 95% Bayesian credible intervals. Positive and negative deviation from the zero-line indicates the presence of long-term trends. nspp. = 510, ntransects = 44, nyears = 18.
