Environmental key factors and their thresholds for the avifauna of temperate montane forests

Moning, Christoph; Müller, Jörg

doi:10.1016/j.foreco.2008.06.018

Cited by 59 publications

(30 citation statements)

References 62 publications

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“…More specifically, we show that the volume of decayed deadwood, logs, large deadwood and oak or pioneer tree deadwood has a positive effect on saproxylic beetle diversity. Our results corroborate previous data highlighting a significant, positive correlation between local deadwood quantity or quality and species richness of saproxylic beetles (e.g., Martikainen et al, 2000;Similä et al, 2002;Moning and Müller, 2008). The increase in decayed deadwood in overmature CWS explains the significantly higher number of saproxylophagous individuals and species we found in these stands.…”

Section: Saproxylic Beetle Diversity Affected In Cws With An Overmatusupporting

confidence: 92%

Coppice-with-standards with an overmature coppice component enhance saproxylic beetle biodiversity: A case study in French deciduous forests

Lassauce

Anselle²,

Lieutier

et al. 2012

Forest Ecology and Management

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Section: Saproxylic Beetle Diversity Affected In Cws With An Overmatusupporting

confidence: 92%

Coppice-with-standards with an overmature coppice component enhance saproxylic beetle biodiversity: A case study in French deciduous forests

Lassauce

Anselle²,

Lieutier

et al. 2012

Forest Ecology and Management

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“…Cavity diversity and age of forest promotes the range of cavity-roosting species there. The environment should provide still appropriate roosting sites according to these requirements (including course of the weather), which corroborates that the survival of tree-dwelling forest animals depends on the diversity of this habitat (Moning and Muller 2008;Remm et al 2008).…”

Section: Discussionsupporting

confidence: 54%

Selection of winter roosts in the Great Tit Parus major: influence of microclimate

2009

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The success in energy saving in roosting Great Tits (Parus major) is potentially influenced by roost microclimatic characteristics. We tried to learn about the pattern in cavity microclimate influence on night roosting of birds, under natural weather conditions. An experimental aviary offered two artificial tree-roosts with different microclimatic conditions which varied according to the outdoor conditions (mainly due to solar radiation) and microclimate retention capability of roosts. Birds actively explored roosts before the final choice of sleeping site. Two hours prior to sunset, there were significant differences between the roosts (n = 11 adult males tested, each six nights). Selected roosts had higher average temperature (Wilcoxon matched pairs test, P = 0.017) and temperature at the time of sunset (P = 0.028). Simultaneously, inside temperature decreased slowly (P = 0.047). During the night, when birds slept in one of the roosts, the average temperature was higher (P \ 0.001) and the fluctuation range of temperatures was smaller (P = 0.003) there. Moreover, at the morning twilight, the temperature of the occupied roost was higher (P \ 0.001). Humidity did not have a significant influence at all. The effect of metabolic heating was demonstrated. When birds slept in the insulated roost (n = 30 nights), the indoor average temperature significantly differed from the non-insulated and outdoor temperatures (Kruskal-Wallis ANOVA, P = 0.0001). Selection of an actually warmer and thermally more stable roost according to the course of weather indicates demand for a wide spectrum of potential roosts in the natural environment.

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“…In the context of average montane conditions of the central Pyrenees, a CBH = 220 cm corresponds roughly to an age of 200/250 years. Trees of this age support a great diversity of cavity-dwelling birds (Moning and Müller 2008), epiphytic lichens and molluscs in Bavarian montane forests.…”

Section: Tree Circumference Thresholdsmentioning

confidence: 99%

Impact of silviculture on dead wood and on the distribution and frequency of tree microhabitats in montane beech-fir forests of the Pyrenees

2011

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In forest ecosystems, the level of biodiversity is strongly linked to dead wood and tree microhabitats. To evaluate the influence of current forest management on the availability of dead wood and on the abundance and distribution of microhabitats, we studied the volume and diversity of dead wood objects and the distribution and frequency of cavities, dendrothelms, cracks, bark losses and sporophores of saproxylic fungi in montane beech-fir stands. We compared stands unmanaged for 50 or 100 years with continuously managed stands. A total of 1,204 live trees and 460 dead wood objects were observed. Total dead wood volume, snag volume and microhabitat diversity were lower in the managed stands, but the total number of microhabitats per ha was not significantly different between managed and unmanaged stands. Cavities were always the most frequent microhabitat and cracks the least frequent. Dendrothelm and bark loss were favored by management. Beech (Fagus sylvatica) carried many more microhabitats than silver fir (Abies alba), especially cavities, dendrothelms and bark losses. Fir very scarcely formed dendrothelms. Secondary tree species played an important role by providing cracks and bark losses. The proportion of microhabitat-bearing trees increased dramatically above circumference thresholds of 225 cm for beech and 215 cm for fir. Firs with a circumference of less than 135 cm did not carry microhabitats. In order to conserve microhabitat-providing trees and to increase the volume of dead wood in managed stands, we recommend conserving trees that finish their natural cycle over 10-20% of the surface area.

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Environmental key factors and their thresholds for the avifauna of temperate montane forests

Cited by 59 publications

References 62 publications

Coppice-with-standards with an overmature coppice component enhance saproxylic beetle biodiversity: A case study in French deciduous forests

Coppice-with-standards with an overmature coppice component enhance saproxylic beetle biodiversity: A case study in French deciduous forests

Selection of winter roosts in the Great Tit Parus major: influence of microclimate

Impact of silviculture on dead wood and on the distribution and frequency of tree microhabitats in montane beech-fir forests of the Pyrenees

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