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Insect decline in forests depends on species' traits and may be mitigated by management

Staab, Michael ; Gossner, Martin M. ; Simons, Nadja K. ; Achury, Rafael ; Ambarlı, Didem ; Bae, Soyeon ; Schall, Peter ; Weisser, Wolfgang W. ; Blüthgen, Nico (2023)
Insect decline in forests depends on species' traits and may be mitigated by management.
In: Communications biology, 6 (1)
doi: 10.1038/s42003-023-04690-9
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

Insects are declining, but the underlying drivers and differences in responses between species are still largely unclear. Despite the importance of forests, insect trends therein have received little attention. Using 10 years of standardized data (120,996 individuals; 1,805 species) from 140 sites in Germany, we show that declines occurred in most sites and species across trophic groups. In particular, declines (quantified as the correlation between year and the respective community response) were more consistent in sites with many non-native trees or a large amount of timber harvested before the onset of sampling. Correlations at the species level depended on species' life-history. Larger species, more abundant species, and species of higher trophic level declined most, while herbivores increased. This suggests potential shifts in food webs possibly affecting ecosystem functioning. A targeted management, including promoting more natural tree species composition and partially reduced harvesting, can contribute to mitigating declines.

Typ des Eintrags: Artikel
Erschienen: 2023
Autor(en): Staab, Michael ; Gossner, Martin M. ; Simons, Nadja K. ; Achury, Rafael ; Ambarlı, Didem ; Bae, Soyeon ; Schall, Peter ; Weisser, Wolfgang W. ; Blüthgen, Nico
Art des Eintrags: Bibliographie
Titel: Insect decline in forests depends on species' traits and may be mitigated by management
Sprache: Englisch
Publikationsjahr: 4 April 2023
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Communications biology
Jahrgang/Volume einer Zeitschrift: 6
(Heft-)Nummer: 1
DOI: 10.1038/s42003-023-04690-9
Kurzbeschreibung (Abstract):

Insects are declining, but the underlying drivers and differences in responses between species are still largely unclear. Despite the importance of forests, insect trends therein have received little attention. Using 10 years of standardized data (120,996 individuals; 1,805 species) from 140 sites in Germany, we show that declines occurred in most sites and species across trophic groups. In particular, declines (quantified as the correlation between year and the respective community response) were more consistent in sites with many non-native trees or a large amount of timber harvested before the onset of sampling. Correlations at the species level depended on species' life-history. Larger species, more abundant species, and species of higher trophic level declined most, while herbivores increased. This suggests potential shifts in food webs possibly affecting ecosystem functioning. A targeted management, including promoting more natural tree species composition and partially reduced harvesting, can contribute to mitigating declines.

ID-Nummer: pmid:37016087
Fachbereich(e)/-gebiet(e): 10 Fachbereich Biologie
10 Fachbereich Biologie > Ecological Networks
Hinterlegungsdatum: 11 Apr 2023 05:28
Letzte Änderung: 11 Apr 2023 05:38
PPN: 506739708
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