Meta-analysis reveals declines in terrestrial but increases in freshwater insect abundances.
Science
; 368(6489): 417-420, 2020 04 24.
Article
em En
| MEDLINE
| ID: mdl-32327596
ABSTRACT
Recent case studies showing substantial declines of insect abundances have raised alarm, but how widespread such patterns are remains unclear. We compiled data from 166 long-term surveys of insect assemblages across 1676 sites to investigate trends in insect abundances over time. Overall, we found considerable variation in trends even among adjacent sites but an average decline of terrestrial insect abundance by ~9% per decade and an increase of freshwater insect abundance by ~11% per decade. Both patterns were largely driven by strong trends in North America and some European regions. We found some associations with potential drivers (e.g., land-use drivers), and trends in protected areas tended to be weaker. Our findings provide a more nuanced view of spatiotemporal patterns of insect abundance trends than previously suggested.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Extinção Biológica
/
Água Doce
/
Insetos
Tipo de estudo:
Systematic_reviews
Limite:
Animals
País/Região como assunto:
America do norte
/
Europa
Idioma:
En
Revista:
Science
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Alemanha