Bryophytes and decaying wood in Hepatica site-type boreo-nemoral Pinus sylvestris forests in Southern Estonia

Rajandu, Elle; Kikas, Karin; Paal, Jaanus

doi:10.1016/j.foreco.2008.11.001

Cited by 16 publications

(8 citation statements)

References 37 publications

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“…Coarse woody debris (CWD) CWD, especially large logs, often hosts high bryophyte species richness in boreal forests (Jonsson and Esseen 1990;Berg et al 2002;Dynesius et al 2009;Mills and Macdonald 2004;Rajandu et al 2009;Madzule et al 2012). The species richness related to stumps, branches and logs was not especially high in this study, however, and CWD area did not explain species richness.…”

Section: Rockscontrasting

confidence: 50%

Bryophytes and their microhabitats in coniferous forest pastures: should they be considered in the pasture management?

2014

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Forest pastures, like many other semi-natural (traditional) rural biotopes, have undergone a drastic decline both in area and quality during the last century in many areas. We explored the bryophyte flora of Finnish coniferous forest pastures on acidic soil and aimed to recognize the most important microsites (rocks, coarse woody debris, tree bases, mineral soil patches and closed vegetation) for bryophyte diversity. The effects of microhabitat heterogeneity (microsite entropy) on bryophytes was also examined. We found altogether 83 bryophyte species. The only red-listed species, Tayloria tenuis, was frequently found on dung patches and a few rare ruderal species grew exclusively on bare mineral soil. Rocks comprised the most species rich microsite and many common forest floor species showed preference for this microsite. Microhabitat heterogeneity explained bryophyte species richness on both alpha (plot average) and gamma (pasture total) scales. The results suggest that certain individual bryophyte species and their microsites should be taken into account in the management of this biotope, rather than guiding the management solely on the basis of the overall bryophyte diversity.

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Section: Rockscontrasting

confidence: 50%

Bryophytes and their microhabitats in coniferous forest pastures: should they be considered in the pasture management?

2014

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“…Also, the number of bryophyte species observed on decayed wood was low, compared with species numbers reported in other studies (Lõhmus and Lõhmus 2008;Vellak and Paal 1999), particularly regarding liverworts. Older forest stands tend to contain more bryophyte species, especially threatened and red listed species (Löbel et al 2006a;Fritz et al 2008;Rajandu et al 2009). Many rare bryophytes, such as Lophozia incisa, Jungermannia leiantha and Riccardia latifrons, can be found in old managed forests (Perhans et al 2007), but these species were not found in our study.…”

Section: Discussionmentioning

confidence: 99%

“…Many bryophyte species depend on specific microhabitats that are not present in younger forests (Söderström 1988b;Rajandu et al 2009). These species may be lost with a break in spatial and temporal continuity of their habitats (Snäll et al 2004;Löbel et al 2006a, b;Fritz et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Structures determining bryophyte species richness in a managed forest landscape in boreo-nemoral Europe

Madžule

Brūmelis

2011

Biodivers Conserv

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Forest patches with high biological value are protected as woodland key habitats (WKH), which are identified by the presence of forest structures and indicator species. However, management for conservation needs to consider also managed forests as habitats for species. In this respect, there is a need to set quantitative targets for species and structures at different landscape scales. Due to non-intensive methods of forest management used prior to 1940 in Latvia, it might be expected that large areas of forest have developed structures that can support many species characteristic of natural forests. The aim of the study was to create a model that best described the richness of bryophyte species that are characteristic of natural forests, using forest structures as explanatory factors. The structures and bryophyte communities on living trees and coarse woody debris (CWD) were described in plots along transects blindly placed in areas dominated by State forests under commercial management. Explanatory variables related to tree species composition and tree size explained 54% of the variation in WKH indicator species richness on living trees. The best explanatory factors were maximum diameter of deciduous tree species and CWD. Low richness of total bryophyte and indicator species was found on dead wood, and the amount of variation in bryophyte species richness on CWD explained by explanatory variables was low. The study indicates the importance of deciduous tree substrate in managed forests in maintaining the spatial continuity of epiphytic species diversity. However, the forests in the managed forest landscape did not support high diversity of epixylic species, even in the WKHs, due to low diversity of suitable dead wood substrate.

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“…While the amounts of CWD in Latvia are high relative to those in many other European countries, the amounts of large CWD (> 30 cm diameter) are low (Madzule et al 2012). The literature on deadwood decay in relation to both age since tree mortality and successions of organism groups is not sufficient and particularly for the eastern Baltic region, excepting some studies (Vasiliauskas et al 2004;Lõhmus et al 2007;Rajandu et al 2009;Preikša et al 2016). The eastern Baltic region represents the transition zone between boreal and temperate forest zones, where decay rates might be hypothesized to be more rapid due to the more temperate climate, than in Northern Scandinavia and alpine forest ecosystems, thus limiting the time period for suitable substrate for colonization by epixylic species.…”

Section: Introductionmentioning

confidence: 98%

Bryophyte and polypore richness and indicators in relation to type, age and decay stage of coarse woody debris of Picea abies

2017

EEB

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Coarse woody debris (CWD), which is in low supply in intensively managed forest, is an essential habitat for many species of bryophytes, fungi and insects. We investigated richness of bryophyte and polypore species on CWD of Norway spruce Picea abies (L.) Karst. in relation to CWD type, size, decay stage and age since mortality. We also identified indicator species for the bryophyte and polypore communities on dead trees in various decay stages. CWD age since mortality was determined to assess the time period of potential colonization by the indicator species. The study was conducted in Latvia, located in the hemi-boreal forest zone, where such information was generally lacking. The larger part of spruce CWD was in early decay stages, due to the legacy of forest management and recent disturbance events. The maximum age of spruce CWD was 48 years, and age of the majority of CWD pieces in advanced decay stages was 20 to 40 years. The estimated ages of CWD suggest a more rapid decay rate in the mesotrophic habitat studied in the Eastern Baltic region than reported previously for northern Scandinavia and mountainous regions. Bryophyte species richness was significantly affected by CWD diameter, type (higher on snapped logs) and decay stage (lowest in initial decay stage). Polypore species richness was significantly lower on snags, and higher on logs in early decay stages. A succession of epixlyic species was shown from common polypore species Fomitopsis pinicola and Trichaptum abietinum at start of wood decay to indicator bryophytes like Nowellia curvifolia in early decay stages after loss of bark, Lepidozia reptans and Jamesoniella autumnalis in mid stages and Herzogiella seligeri with epigeous species in late decay stages.

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Bryophytes and decaying wood in Hepatica site-type boreo-nemoral Pinus sylvestris forests in Southern Estonia

Cited by 16 publications

References 37 publications

Bryophytes and their microhabitats in coniferous forest pastures: should they be considered in the pasture management?

Bryophytes and their microhabitats in coniferous forest pastures: should they be considered in the pasture management?

Structures determining bryophyte species richness in a managed forest landscape in boreo-nemoral Europe

Bryophyte and polypore richness and indicators in relation to type, age and decay stage of coarse woody debris of Picea abies

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