Sammanfattning

Global biodiversity is affected by numerous environmental drivers. Yet, the extent to which global environmental changes contribute to changes in local diversity is poorly understood. We investigated biodiversity changes in a meta-analysis of 39 resurvey studies in European temperate forests (3988 vegetation records in total, 17-75years between the two surveys) by assessing the importance of (i) coarse-resolution (i.e., among sites) vs. fine-resolution (i.e., within sites) environmental differences and (ii) changing environmental conditions between surveys. Our results clarify the mechanisms underlying the direction and magnitude of local-scale biodiversity changes. While not detecting any net local diversity loss, we observed considerable among-site variation, partly explained by temporal changes in light availability (a local driver) and density of large herbivores (a regional driver). Furthermore, strong evidence was found that presurvey levels of nitrogen deposition determined subsequent diversity changes. We conclude that models forecasting future biodiversity changes should consider coarse-resolution environmental changes, account for differences in baseline environmental conditions and for local changes in fine-resolution environmental conditions.

Nyckelord

atmospheric nitrogen deposition; evenness; forestREplot; forest management; game browsing; Shannon diversity; spatiotemporal resurvey data; species richness

Publicerad i

Global Change Biology
2015, Volym: 21, nummer: 10, sidor: 3726-3737
Utgivare: WILEY-BLACKWELL

SLU författare

• Brunet, Jörg

  • Institutionen för sydsvensk skogsvetenskap, Sveriges lantbruksuniversitet
    

Globala målen

SDG15 Skydda, återställa och främja ett hållbart nyttjande av landbaserade ekosystem, hållbart bruka skogar, bekämpa ökenspridning, hejda och vrida tillbaka markförstöringen samt hejda förlusten av biologisk mångfald
SDG13 Vidta omedelbara åtgärder för att bekämpa klimatförändringarna och dess konsekvenser


UKÄ forskningsämne

Botanik
Klimatforskning
Skogsvetenskap


Publikationens identifierare

DOI: https://doi.org/10.1111/gcb.12993

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/69267