Change search
ReferencesLink to record
Permanent link

Direct link
Succession of bryophyte assemblages following clear-cut logging in boreal spruce-dominated forests in south-central Sweden - Does retrogressive succession occur?
Stockholm University, Faculty of Science, Department of Botany.
Stockholm University, Faculty of Science, Department of Botany.
2009 (English)In: Canadian Journal of Forest Research, ISSN 0045-5067, Vol. 39, no 10, 1871-1880 p.Article in journal (Refereed) Published
Abstract [en]

The recovery process of boreal bryophyte communities after clear-cutting was studied in a chronosequence in south-central Sweden. We hypothesized that high initial grass cover on clearcuts, high litter cover and low light levels during canopy closure, and shortage of coarse woody substrates would constrain recovery in different ways. Instead, both epigeic and epixylic guilds (i.e., species growing on forest floor and deadwood) displayed a gradual increase in similarity over time from the clear-cut phase, perhaps because of the absence of distinct peaks in needle litter and canopy cover. Epixylic species started to recover long before the accumulation of deadwood, indicating that microclimate rather than substrate availability was the most constraining factor during the first 50 years. Since we did not find any other bottlenecks during the succession after clear-cutting, conservation measures aiming at decreasing local extinction rates during clearcutting may also increase long-term persistence. On the other hand, as the results from the epixylic guild suggest, other factors during the forest succession, such as the development of a suitable microclimate, might be more important for some organisms, thus possibly mitigating such long-term positive effects of adjusted management during the clear-cutting operation.

Place, publisher, year, edition, pages
2009. Vol. 39, no 10, 1871-1880 p.
URN: urn:nbn:se:su:diva-34466DOI: 10.1139/X09-113ISI: 000271076100008OAI: diva2:284848
Available from: 2010-01-08 Created: 2010-01-08 Last updated: 2010-05-03Bibliographically approved
In thesis
1. Resistance and recolonization of bryophyte assemblages following disturbances: - detecting patterns and exploring mechanisms
Open this publication in new window or tab >>Resistance and recolonization of bryophyte assemblages following disturbances: - detecting patterns and exploring mechanisms
2010 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Disturbances are ubiquitous features of most northern forest ecosystems. The subsequent response of plant assemblages on both short (resistance or not) and long term (recolonization or not) will depend on a number of factors operating at several spatial scales. In boreal forest ecosystems, bryophyte assemblages are a conspicuous and species rich group of plants for which these processes are poorly understood. Using a combination of experimental and observational approaches this thesis explores these questions for closed-canopy bryophyte assemblages in relation to a) microtopography (both for the initial and long-term response), b) environmental constrains during post-logging succession and c) disturbance type. My results clearly show that the shade and shelter provided by microtopographic surface structures can increase survival rates of bryophytes following clear-cut logging by decreasing mortality from microclimatic stress and mechanical disturbance. Following clear-cutting, the recovery of forest floor and dead wood living bryophytes seems to be a relatively steady and progressive process without any major bottleneck episodes in the young or semi-mature forest stages with much of the pre-disturbance composition recovered after 50 years. Although boulders were found to increase the initial survival on clear-cuts and hence increase disturbance resistance, we found no evidence that boulders influenced the subsequent recolonization process. Lastly, strong compositional dissimilarities were found in young forests (40 years) following clear-cut logging, wildfire and insect outbreak, indicating divergent trajectories to occur following different disturbances. Hence, early seral stages of forest ecosystems regenerating after natural disturbances seem to compliment young managed forests in maintaining landscape level diversity.

Place, publisher, year, edition, pages
Stockholm: Department of Botany, Stockholm University, 2010. 30 p.
Bryophytes, boreal forest, boulders, clear-cutting, disturbance, establishment, insect outbreaks, microtopography, recolonization, resistance, spatial heterogeneity, succession, wildfires
National Category
Biological Sciences
Research subject
Plant Ecology
urn:nbn:se:su:diva-38883 (URN)978-91-7447-053-6 (ISBN)
Public defence
2010-06-04, Föreläsningssalen, Botanicum, Lilla Frescativägen 5, Stockholm, 10:00 (English)
At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 2: Submitted. Paper 3: Manuscript. Paper 4: Manuscript.Available from: 2010-05-11 Created: 2010-05-03 Last updated: 2010-05-03Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Schmalholz, MartinHylander, Kristoffer
By organisation
Department of Botany
In the same journal
Canadian Journal of Forest Research

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 33 hits
ReferencesLink to record
Permanent link

Direct link