TY  - JOUR
A1  - Jähnig, Sonja C.
A1  - Baranov, Viktor
A1  - Altermatt, Florian
A1  - Cranston, Peter
A1  - Friedrichs‐Manthey, Martin
A1  - Geist, Juergen
A1  - He, Fengzhi
A1  - Heino, Jani
A1  - Hering, Daniel
A1  - Hölker, Franz
A1  - Jourdan, Jonas
A1  - Kalinkat, Gregor
A1  - Kiesel, Jens
A1  - Leese, Florian
A1  - Maasri, Alain
A1  - Monaghan, Michael T.
A1  - Schäfer, Ralf B.
A1  - Tockner, Klement
A1  - Tonkin, Jonathan D.
A1  - Domisch, Sami
T1  - Revisiting global trends in freshwater insect biodiversity
Y1  - 2020-12-31
VL  - 8
IS  - 2
JF  - Wiley Interdisciplinary Reviews: Water
DO  - 10.23689/fidgeo-4032
PB  - John Wiley & Sons
CY  - Inc.
N2  - A recent global meta‐analysis reported a decrease in terrestrial but increase in freshwater insect abundance and biomass (van Klink et al., Science 368, p. 417). The authors suggested that water quality has been improving, thereby challenging recent reports documenting drastic global declines in freshwater biodiversity. We raise two major concerns with the meta‐analysis and suggest that these account for the discrepancy with the declines reported elsewhere. First, total abundance and biomass alone are poor indicators of the status of freshwater insect assemblages, and the observed differences may well have been driven by the replacement of sensitive species with tolerant ones. Second, many of the datasets poorly represent global trends and reflect responses to local conditions or nonrandom site selection. We conclude that the results of the meta‐analysis should not be considered indicative of an overall improvement in the condition of freshwater ecosystems. This article is categorized under: Water and Life > Conservation, Management, and Awareness
N2  - Relying on abundance or biomass and examining nonrepresentative datasets limits our ability to infer the condition of freshwater insect communities globally. Photo by Jeremy Monroe, Freshwaters Illustrated: a caddisfly larva from an Oregon Coastal stream, USA (Limnephilidae: Dicosmoecus sp.).
UR  - http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/8372
ER  -