Details

Autor(en) / Beteiligte

• Murali, Gopal
• Caetano, Gabriel Henrique de Oliveira
• Barki, Goni
• Meiri, Shai
• Roll, Uri
• Leung, Brian
• Hargreaves, Anna L
• Greenberg, Dan A
• McGill, Brian
• Dornelas, Maria
• Freeman, Robin

Titel

Emphasizing declining populations in the Living Planet Report/Reply

Ist Teil von

• Nature (London), 2022-01, Vol.601 (7894), p.E20-2

Ort / Verlag

London: Nature Publishing Group

Erscheinungsjahr

2022

Beschreibungen/Notizen

• [...]when properly accounting also for the influence of the fastest-increasing populations, we find that the overall declines in the Living Planet Report are practically unchanged. [...]the Living Planet Database is heavily biased towards populations that receive more conservation attention, indicating that the true population trends are indeed dire and may actually be worse than depicted in the Living Planet Report. To achieve no net overall population declines, we needed to remove at least 43.3% of the extreme data (21.65% from each end) (Fig. 1a). [...]the analysis by Leung et al.5 greatly exaggerates the effect of extreme-increasing populations and misrepresents the overall trends. [...]Leung et al.5 devised a method to identify extreme and primary clustered population growth trends (Bayesian hierarchical mixture model). Species and populations that are better covered by protected areas are usually less threatened than those that are less covered8,9. [...]populations in the Living Planet Database are probably doing better than those that are not studied, and the true global population trends are probably worse than analyses based on the Living Planet Database suggest.