Bryophyte persistence following major fire in eucalypt forest of southern Australia

Pharo, Emma J.; Meagher, David; Lindenmayer, David B.

doi:10.1016/j.foreco.2013.01.018

Cited by 24 publications

(27 citation statements)

References 38 publications

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“…In Australian temperate eucalypt forest, harvesting operations are particularly deleterious to bryophytes (i.e. mosses, liverworts and hornworts), as they are sensitive to mechanical disturbances and the commonly used regeneration burn (Pharo, Meagher, & Lindenmayer, ). Additionally, bryophytes may be eliminated post‐harvest due to intolerance of increased environmental extremes (Vanha‐Majamaa et al., ).…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, bryophytes may be eliminated post‐harvest due to intolerance of increased environmental extremes (Vanha‐Majamaa et al., ). Although some bryophytes may survive harvesting disturbance, for example under logs and in wet gullies/depressions, this is rare, especially when exposed to fire (Pharo et al., ). Therefore re‐establishment of bryophyte communities following disturbance generally relies on successful re‐colonization from adjacent sites.…”

Section: Introductionmentioning

confidence: 99%

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Distance, environmental and substrate factors impacting recovery of bryophyte communities after harvesting

Baker

Jordan

Fountain‐Jones

et al. 2017

Applied Vegetation Science

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Aims: Bryophyte re-colonization after disturbance is largely governed by environmental conditions within disturbed forests. In particular, distance to a forest edge is an important predictor of bryophyte community re-colonization, through either direct constraints, such as dispersal limitation, or indirectly by altering environmental conditions. This study examines a range of factors -environmental, distance to an edge, substrate specific environment or local-level environment -to determine which are important in the re-colonization of bryophyte communities after forest harvesting. As bryophyte communities vary with the particular substrate inhabited, responses were examined across four substrates (rock, exposed roots, ground and CWD). Location: Tasmanian southern forests, Australia.Methods: Bryophyte composition was examined on four substrates (ground, coarse wood debris, exposed roots, rocks) within three ages (~7, ~27 and ~45 years postdisturbance) of harvested wet eucalypt forest. Re-colonization success of bryophyte communities was determined by comparing communities in regeneration forest to mature forest communities using axis scores from one-dimensional constrained ordination.The importance of various environmental conditions for re-colonization success was then modelled. Finally, path analysis was used to determine whether the impact of distance to a forest edge was meditated through its effects on key environmental variables. Results:Multiple environmental factors impacted re-colonization of mature bryophyte communities. Local-level conditions such as microclimate (temperature, humidity and VPD) and LAI were the most important in determining re-colonization across substrates. Path analysis showed that distance to a forest edge had a significant impact on re-colonization success, but only a relatively small part of this was mediated through its impact on environmental factors. Conclusions:Bryophyte re-colonization is driven by a combination of microclimate conditions and factors related to distance from a forest edge (most likely dispersal distance). While some substrate-specific factors impact bryophyte re-colonization success, the consistent impact of local environmental factors across substrates suggests that harvesting management strategies that develop more 'mature' microclimate conditions and increase proximity to nearby mature forest patches will be beneficial Nomenclature: Online catalogue of Australian mosses (AusMoss) for mosses; Checklist of Australian Liverworts and Hornworts (http://www.anbg.gov.au) | 65

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Distance, environmental and substrate factors impacting recovery of bryophyte communities after harvesting

Baker

Jordan

Fountain‐Jones

et al. 2017

Applied Vegetation Science

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“…The floristic composition of bryophytes in the first year or so after burning (Duncan and Dalton 1982;Hodge et al 2009;Pharo et al 2013; our own studies) suggests there are no surviving propagules of pre-fire cryptogams in the soil, although soil banks can provide a source of propagules in unburnt forests (e.g. Ross-Davis and Frego 2004).…”

Section: Felling and Burningmentioning

confidence: 70%

“…Ashton and McRae 1970;Kantvilas et al 1985;Kantvilas 1988Kantvilas , 1990Kantvilas and Minchin 1989;Kantvilas and Jarman 1993;Kantvilas 1995a, 1995b;Milne and Louwhoff 1999;Gibson 2004, 2010;Tng et al 2009) and eucalypt-dominated forests (a major source of commercial timber) (e.g. Cremer and Mount 1965;Duncan and Dalton 1982;Brasell and Mattay 1984;Ashton 1986;Beattie 1997, 2002;Pharo and Blanks 2000;Pharo et al 2004Pharo et al , 2009Pharo et al , 2013Jarman and Kantvilas 2001a, 2001bKantvilas and Jarman 2004Turner and Pharo 2005;Turner et al 2006Turner et al , 2011Turner and Kirkpatrick 2009;Hodge et al 2009;Browning et al 2010;Cranfield et al 2011;Baker et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Early impacts of disturbance on lichens, mosses and liverworts in Tasmania’s wet eucalypt production forests

Kantvilas

Jarman

Minchin

2015

Australian Forestry

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The impacts of silvicultural disturbance (felling and burning) on lichens, mosses and liverworts in Eucalyptus obliqua-dominated wet forest in Tasmania were investigated. The study was based on presence-absence data for 452 taxa from 52 sampling events, spanning unlogged forest and disturbed, regenerating forest about 1, 3 and 5 years after disturbance. Three aspects of species composition were compared: total species richness, occurrence of pre-disturbance species in the post-disturbance flora and relative richness of ecological groups in the flora. Total species richness was the least reliable measure for evaluating changes due to disturbance.Felling and burning in different combinations were represented in a range of silvicultural treatments applied in the study area. They produced different levels of disturbance and different microhabitats, and thereby defined the character of the cryptogamic flora. The most severe impacts occurred at burnt sites, regardless of whether the forest had been felled or not, and the least impact was found in standing, unburnt forest.The consequences of severe disturbance were a substantial change in species composition, with a reduction, in particular, of mature wet forest species in favour of species associated with disturbance or brightly lit, exposed environments. In the lichens, the loss of old tree indicators, old forest indicators, foliicolous species, rare species of conservation significance and species indicative of a succession towards cool temperate rainforest was especially severe. Mosses and liverworts also showed a very pronounced loss of mature wet forest species. In the mosses, the presence of newcomers, represented mostly by disturbance species or species typical of open drier conditions, masked the extent of these losses. In the liverworts, there were few newcomers and the composition of the post-disturbance flora was much depleted.

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“…In particular, wet areas (as reflected by high values for topographic wetness), as well as places on steep slopes with either an easterly or westerly aspect, support significantly more large old trees than elsewhere in forest landscapes dominated by Mountain Ash (Lindenmayer et al 1991b;Lindenmayer 2009;Lindenmayer et al 2014a). They also are important habitat for many other species, including reptiles and plants (Pharo et al 2013;Lindenmayer et al 2015). Large old Mountain Ash trees have a wide range of other important ecological values.…”

Section: Case Study Of Large Old Trees In Victorian Montane Ash Forestsmentioning

confidence: 99%

The importance of managing and conserving large old trees: a case study from Victorian Mountain Ash forests

Lindenmayer¹

2016

Proc. R. Soc. Vic.

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Large old trees are critical structures in the Mountain Ash forests of the Central Highlands of Victoria. They perform many critical ecological and other roles. Populations of these trees are also in serious decline. A range of key management strategies is needed to arrest the decline of existing populations of large old trees and instigate population recovery. In particular all existing large old trees need to be properly protected with adequate buffers of uncut forest. In addition, all stands of oldgrowth forest, irrespective of their size, need to be protected to ensure they are not logged. The size of the old-growth estate also must be expanded so that it encompasses at least 30%-50% of the distribution of Mountain Ash. Finally, the recruitment of new cohorts of large old trees is critically important to replace existing trees when they are lost. To achieve this, large areas of existing regrowth forest that regenerated after the 1939 fires need to be excluded from logging and grown through to an oldgrowth stage. Implementation of altered management in Mountain Ash forests is urgent, as delays in policies will exacerbate the decline of this significant population of large old trees in south-eastern Australia.

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Bryophyte persistence following major fire in eucalypt forest of southern Australia

Cited by 24 publications

References 38 publications

Distance, environmental and substrate factors impacting recovery of bryophyte communities after harvesting

Distance, environmental and substrate factors impacting recovery of bryophyte communities after harvesting

Early impacts of disturbance on lichens, mosses and liverworts in Tasmania’s wet eucalypt production forests

The importance of managing and conserving large old trees: a case study from Victorian Mountain Ash forests

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