Distribution of some vulnerable epiphytic bryophytes in the north of the province of Groningen, The Netherlands

Zanten, B. O. Van

doi:10.1016/0006-3207(92)90584-a

Cited by 3 publications

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, it is well documented that air pollution has a significant impact on the species composition of epiphytic cryptogams. The influence of air pollution in Europe has been pointed out in Czechoslovakia (Vána 1992), Germany (Meinunger 1992), The Netherlands (Stoutjesdijk & Barkman 1987;van Zanten 1992), England (Farmer et al 1991;Rose 1992), Sweden (Andersson & Appelquist 1987;Gustafsson et al 1992a; Influence of management on the species composition of epiphytic cryptogams in Danish Fagus forests Aude, Erik 1,2* & Poulsen, Roar S. 3 Hallingbäck 1992; Sjögren 1995), Norway (Gauslaa 1995), and Denmark (Johnsen & Søchting 1973;Søchting & Johnsen 1975). A general review of air pollution and epiphytes was presented by Henderson (1995a, b).…”

Section: Introductionmentioning

confidence: 99%

Influence of management on the species composition of epiphytic cryptogams in DanishFagusforests

Aude¹,

Poulsen²

2000

Applied Vegetation Science

View full text Add to dashboard Cite

Abstract. The purpose of this study is to evaluate and to quantify the influence of management on the epiphytic species composition in Danish Fagus sylvatica forests. Trunks were chosen at random within selected blocks in both managed and unmanaged Fagus stands.117 trunks in 43 sample plots in three forests were investigated. Cover was estimated for 72 lichens, 29 bryophytes and two fungi on vertical trunks 0.3 ‐2 m above ground. 18 explanatory variables were recorded and arranged in three groups: eight management‐related variables, six micro‐climatic‐ and soil variables, and four geographical‐ and geological variables. Canonical Correspondence Analysis was used to test and to quantify the explaining power of the three groups of variables applying the variation partitioning approach. Detrended Correspondence Analysis was used to evaluate whether important gradients were ignored. It was concluded that the traditional ‘shelterwood uniform system’ used in Fagus forests has a marked influence on the epiphytic species composition. Thus, management‐related variables explained more than one third of the total variation explained, which equals 10.9% of the total variation. Microclimatic and soil variables explained 9.0%, and geographical and geological variables explained 6.0%. The following three recommendations are suggested to reduce the significant influence of management on the epiphytic species composition. First, it should be attempted to ensure a continuous occurrence of some big trees per ha to be left for natural death and decomposition. Second, regular thinning is necessary, especially in the first part of rotation. Third, a multi‐layered forest, where wind and desiccation effects are minimized, is recommended.

show abstract