Broad-scale distribution of epiphytic hair lichens correlates more with climate and nitrogen deposition than with forest structure

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Broad-scale distribution of epiphytic hair lichens correlates more with climate and nitrogen deposition than with forest structure

Esseen, Per-Anders (author): Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Arcum,Department of Ecology and Environmental Science, Umeå University, Umeå,Umeå University

Ekström, Magnus, 1966- (author): Umeå universitet,Statistik,Department of Statistics, Umeå University, Umeå,Umeå University

Westerlund, Bertil (author): Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skoglig resurshushållning,Department of Forest Resource Management

Palmqvist, Kristin (author): Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Department of Ecology and Environmental Science, Umeå University, Umeå

Jonsson, Bengt Gunnar (author): Mittuniversitetet,Avdelningen för naturvetenskap

Grafström, Anton (author): Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skoglig resurshushållning,Department of Forest Resource Management

Ståhl, Göran (author): Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skoglig resurshushållning,Department of Forest Resource Management

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Canadian Science Publishing, 2016
2016
English.
In: Canadian Journal of Forest Research. - : Canadian Science Publishing. - 0045-5067 .- 1208-6037. ; 46:11, s. 1348-1358

Related links:: https://doi.org/10.1...; show more...; https://miun.diva-po... (primary) (Raw object); http://miun.diva-por...; https://umu.diva-por... (primary) (Raw object); https://urn.kb.se/re...; https://doi.org/10.1...; https://urn.kb.se/re...; https://res.slu.se/i...; show less...

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Hair lichens are strongly influenced by forest structure at local scales, but their broad-scale distributions are less understood. We compared the occurrence and length of Alectoria sarmentosa (Ach.) Ach., Bryoria spp., and Usnea spp. in the lower canopy of > 5000 Picea abies (L.) Karst. trees within the National Forest Inventory across all productive forest in Sweden. We used logistic regression to analyse how climate, nitrogen deposition, and forest variables influence lichen occurrence. Distributions overlapped, but the distribution of Bryoria was more northern and that of Usnea was more southern, with Alectoria's distribution being intermediate. Lichen length increased towards northern regions, indicating better conditions for biomass accumulation. Logistic regression models had the highest pseudo R2 value for Bryoria, followed by Alectoria. Temperature and nitrogen deposition had higher explanatory power than precipitation and forest variables. Multiple logistic regressions suggest that lichen genera respond differently to increases in several variables. Warmingdecreased the odds for Bryoria occurrence at all temperatures. Corresponding odds for Alectoria and Usnea decreased in warmer climates, but in colder climates, they increased. Nitrogen addition decreased the odds for Alectoria and Usnea occurrence under high deposition, but under low deposition, the odds increased. Our analyses suggest major shifts in the broad-scale distribution of hair lichens with changes in climate, nitrogen deposition, and forest management.

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NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...

AGRICULTURAL SCIENCES: AGRICULTURAL SCI ...; and Agriculture Fore ...; and Forest Science

Articles in the publication: Canadian Journal ...

By the university: Mid Sweden University; Umeå University; Swedish University of Agricultural Sciences

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Broad-scale distribution of epiphytic hair lichens correlates more with climate and nitrogen deposition than with forest structure

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