Lichen species diversity and substrate amounts in young planted boreal forests: A comparison between slash and stumps of Picea abies

Caruso, Alexandro; Rudolphi, Jörgen; Thor, Göran

doi:10.1016/j.biocon.2007.08.021

Cited by 68 publications

(75 citation statements)

References 21 publications

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“…The total species number on FWD was clearly lower than on stumps and, more importantly, FWD was inhabited mainly by common species with no particular conservation concern (IV). Therefore, FWD can be considered a less valuable habitat for epiphytic lichens, which is in accordance with previous studies from Sweden (Caruso et al, 2008;Svensson et al, 2014;2016).…”

Section: Epiphytic Lichens' Occurrence On Harvested Sitessupporting

confidence: 91%

“…This is problematic particularly in Fennoscandia where the amount of dead wood in managed forests is already very low in comparison to old-growth stands, and as such many dead wood-dependent species have consequently become threatened (Siitonen, 2001). Even though coarse woody debris (CWD) is usually regarded as the most important substrate for dead wood-dwelling species, stumps and slash (or fine woody debris (FWD) in general) can also host species-rich assemblages of basidio-and ascomycete fungi (Kruys and Jonsson, 1999;Nordén et al, 2004;Juutilainen et al, 2014), epiphytic lichens (Caruso et al, 2008;Svensson et al, 2013), bryophytes (Humphrey et al, 2002) and saproxylic beetles (Hjältén et al, 2010b). Large-scale biofuel harvest can be a threat to these species, as stumps and slash constitute a major part of the dead wood available on clear-cut sites (Eräjää et al, 2010;Lõhmus et al, 2013) and may thus currently be a significant resource for the species.…”

Section: Forest Biofuel Harvestmentioning

confidence: 99%

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Retention forestry and intensified biomass harvest: epiphytic lichen assemblages under opposing ecological effects in pine-dominated boreal forests

Hämäläinen¹

2016

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Intensive forestry has led to changes in the structure and function of boreal forests and to the endangerment of forest-dwelling species. Different management methods, such as retention forestry, have been developed to counter the negative biodiversity impacts, although forest use has intensified at the same time: for example, stumps and logging residues are commonly harvested for biofuel. This thesis examines the potential impacts of biofuel harvest, retention forestry and prescribed burning on epiphytic lichen assemblages in pine-dominated boreal forests. In addition, post-harvest dynamics of retention trees were studied to assess their capacity to support species diversity in the early successional forests. The study is based on a large, empirical dataset collected in eastern Finland from 24 study sites that were treated experimentally with a combination of retention harvest and prescribed burning, and, additionally, from 13 sites that represent different stages of forest succession.The results show that retention forestry has the potential to maintain pre-harvest legacies and support high lichen diversity on harvested sites: 85 lichen species, including Red-Listed species and dead wood specialists, were recorded on retained Scots pines (Pinus sylvestris L.) or their dead wood legacies 11 years post-harvest. However, the outcome of retention forestry is affected by post-harvest mortality rates and the fall patterns of the retained trees, which in turn differ depending on the retention tree volume, possible application of prescribed burning, and tree-level factors.Prescribed burning of harvested sites increased retention tree mortality rates and decreased epiphytic lichen richness 11-12 years post-fire. However, in combination with high retention volumes, burning created more diverse dead wood habitats than retention forestry alone. Thus, despite the initial negative effect, the application of prescribed burning on part of the harvested sites could eventually increase lichen diversity at the landscape scale.Scots pine stumps on harvested sites hosted 83 lichen species, and may be a valuable habitat resource for wood-dwelling lichens if dead wood volumes in the landscape are otherwise low. Therefore, large-scale stump harvest may decrease lichen diversity. Instead, fine woody debris was found to be a less valuable substrate for epiphytic lichens and could be harvested for biofuel without notable effects on lichen populations.This study shows that retention forestry can be used to enhance lichen species richness in managed forests, while stump harvest has the opposite effect by reducing lichens' habitats. Prescribed burning decreases lichen species richness at the stand scale but may enhance it at the landscape scale, provided that burning is avoided on the most valuable, lichen-rich stands.

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Section: Epiphytic Lichens' Occurrence On Harvested Sitessupporting

confidence: 91%

Section: Forest Biofuel Harvestmentioning

confidence: 99%

Retention forestry and intensified biomass harvest: epiphytic lichen assemblages under opposing ecological effects in pine-dominated boreal forests

Hämäläinen¹

2016

Diss. For.

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“…Old boreal forest is transformed into young forest which is generally deficient in natural ground structures (Caruso et al 2008, Stenbacka et al 2010. The forest landscape in northern Sweden has changed fundamentally since clear-cutting became the main harvesting method in the 1950s (Ebeling 1959).…”

Section: Introductionmentioning

confidence: 99%

Spatial and temporal variation of hantavirus bank vole infection in managed forest landscapes

et al. 2015

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Abstract. Zoonoses are major contributors to emerging infectious diseases globally. Hemorrhagic fever with renal syndrome (HFRS) is a zoonosis caused by rodent-borne hantaviruses. In Europe, Puumala hantavirus (PUUV) carried and shed by the bank vole (Myodes glareolus), is the most common cause of HFRS. We explore the relationship of PUUV infection in bank voles, as measured by PUUV antibody detection, with habitat and landscape scale properties during two successive vole cycles in boreal Sweden. Our analysis revealed that PUUV infection in the population was not uniform between cycles and across different landscapes. The mean density index of PUUV antibody positive and negative bank voles were highest in old forest, second highest in cut-over forest (approx. 0-30 years old) and lowest on mires. Most importantly, old forest was the core habitat, where PUUV antibody positive bank voles were found through the low density phase and the transition between successive vole cycles. In spring, occurrence of antibody positive voles was negatively related to the proportion of cut-over forest in the surrounding landscape, suggesting that large scale human induced land-use change altered the occurrence of PUUV infection in voles which has not been shown before. Dependence of PUUV infection on habitat and landscape structure, and the variation in infection load within and between cycles are of importance for human risk assessment.

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“…Lichen species are rarely found on both live and dead (decorticate-) wood: logs, snags, stumps and branches often host characteristic communities that include many specialized species (epixylic or lignicolous lichens), depending on the type of wood and on the stage of decay (Brodo et al 2001;Caruso et al 2008;Nascimbene et al 2008;Osyczka and W0grzyn 2008;Spribille et al 2008).…”

Section: Lichen Growth On Vascular Plantsmentioning

confidence: 99%

Lichen-plant interactions

Favero‐Longo

Piervittori

2010

Journal of Plant Interactions

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Controversial data on the pathways and effects of lichen growth on and near bryophytes and vascular plants are reviewed. In most cases, plants which are used as growth substrates positively influence lichen mineral nutrition and are poorly affected by lichen overgrowth, but several reports of negative relationships, including lichen parasitism and allelopathic interferences, prevent generalizations. The allelopathy of terricolous lichens against neighboring plants has been suggested by in vitro investigations, and a multidirectional phytotoxic mode of action has been shown for lichen secondary metabolites. Recent researches on field settings, instead, offer little support of lichen allelopathy, and plant allelopathy against lichens has so far been neglected. A comparison with lichen-rock interactions indicates that a common set of physical and chemical factors can explain the heterogeneous reciprocal effects that exist between lichens and plants, which depend on the species involved, and highlights gaps that need further studies.

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Lichen species diversity and substrate amounts in young planted boreal forests: A comparison between slash and stumps of Picea abies

Cited by 68 publications

References 21 publications

Retention forestry and intensified biomass harvest: epiphytic lichen assemblages under opposing ecological effects in pine-dominated boreal forests

Retention forestry and intensified biomass harvest: epiphytic lichen assemblages under opposing ecological effects in pine-dominated boreal forests

Spatial and temporal variation of hantavirus bank vole infection in managed forest landscapes

Lichen-plant interactions

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