Dead-wood addition promotes non-saproxylic epigeal arthropods but effects are mediated by canopy openness

2016 ◽  
Vol 204 ◽  
pp. 181-188 ◽  
Author(s):  
Sebastian Seibold ◽  
Claus Bässler ◽  
Petr Baldrian ◽  
Lena Reinhard ◽  
Simon Thorn ◽  
...  
Keyword(s):  
Dead Wood ◽  
Canopy Openness ◽  
Epigeal Arthropods

Small-scale positive response of terrestrial gastropods to dead-wood addition is mediated by canopy openness

2017 ◽  
Vol 396 ◽  
pp. 85-90 ◽  
Author(s):  
Tobias Kirchenbaur ◽  
Thomas Fartmann ◽  
Claus Bässler ◽  
Franz Löffler ◽  
Jörg Müller ◽  
...  
Keyword(s):  
Dead Wood ◽  
Positive Response ◽  
Small Scale ◽  
Canopy Openness ◽  
Terrestrial Gastropods

Biodiversity in Dead Wood

2012 ◽  
Author(s):  
Jogeir N. Stokland ◽  
Juha Siitonen ◽  
Bengt Gunnar Jonsson
Keyword(s):  
Dead Wood

Evolution de la gestion des chablis ces 50 dernières années dans la région du Bas-Valais (essai)

2015 ◽  
Vol 166 (3) ◽  
pp. 129-134
Author(s):  
Roland Métral
Keyword(s):  
Natural Hazards ◽  
Dead Wood ◽  
Task Force ◽  
Critical Assessment ◽  
Forest Dieback ◽  
Research Activities ◽  
Mind Set ◽  
The 1960S ◽  
The Mind ◽  
Management Priorities

Trends in windthrow management during the last 50 years in Lower Valais (essay) A review on the measures taken in forests hit by storms during the last 50 years reveals the mind-set behind the evolution of management operations. In the 1960s, to remove all dead wood in a stand was perfectly normal due to timber prices. Between 1984 and 1990, vast sums of money were pumped into the improvement of forest structures facing the threat of a general forest dieback. As a consequence, only few of the windthrow areas caused by storm Vivian remained with no intervention. Vivian also marked the beginning of manifold research activities and practical terrain examination in windthrow gaps. Conclusions of this first research phase resulted in a critical assessment of the windthrow areas caused by Lothar in 1999, considering different goals than systematic removal of damage wood and the prevention of bark beetle outbreaks. Since the 1990s, retaining timber after windthrow has been lively discussed, as well as the maintenance of the protection function against natural hazards and opportunities for biodiversity. Several handbooks were developed and successfully used for the planning and defining of top priority measures in damaged forests that resulted from disturbances in 2011 and 2012 in Lower Valais. These recent disturbances together with the certainty that storms will recur led to the formation of a task force in the canton Valais, aiming to organize both logistics and funds, as well as to define management priorities regarding a next hazard.

Verantwortlichkeit bei waldtypischen Gefahren: Beispiele aus der Gerichtspraxis

2016 ◽  
Vol 167 (2) ◽  
pp. 82-89
Author(s):  
Michael Bütler
Keyword(s):  
Dead Wood ◽  
Personal Responsibility ◽  
Forest Policy ◽  
Legal Practice ◽  
Protective Measures ◽  
Legal Case ◽  
Legal Situation ◽  
Forest Users ◽  
The One ◽  
Liability Risks

Responsibility for forest-linked dangers: examples from legal practice According to the Forest Policy 2020 of the Federal Council the share of old and dead wood should increase in Swiss forests. On the one hand, this is connected to positive ecological effects but on the other, to dangers, responsibilities and liability risks. Recent court and administrative decisions relating to accidents due to typical forest hazards such as falling trees and branches illustrate the legal situation for forest owners and enterprises as well as for forestry professionals. In the wooded environment near buildings and equipment there are obligations for the safety of traffic and passers-by. However, these obligations are limited by the reasonableness of protective measures and the personal responsibility of forest users. In this paper, the liability issue is illustrated by three legal case studies. The cases are assessed by the author, and the essential legal basis for liability is briefly summarized.

scholarly journals How Does Radial Growth of Water-Stressed Populations of European Beech (Fagus sylvatica L.) Trees Vary under Multiple Drought Events?

Forests ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 129
Author(s):  
Tamalika Chakraborty ◽  
Albert Reif ◽  
Andreas Matzarakis ◽  
Somidh Saha
Keyword(s):  
Soil Water ◽  
Fagus Sylvatica ◽  
Tree Growth ◽  
Radial Growth ◽  
Basal Area ◽  
European Beech ◽  
Canopy Openness ◽  
Fagus Sylvatica L ◽  
The Impact ◽  
Neighborhood Competition

European beech (Fagus sylvatica L.) trees are becoming vulnerable to drought, with a warming climate. Existing studies disagree on how radial growth varies in European beech in response to droughts. We aimed to find the impact of multiple droughts on beech trees’ annual radial growth at their ecological drought limit created by soil water availability in the forest. Besides, we quantified the influence of competition and canopy openness on the mean basal area growth of beech trees. We carried out this study in five near-natural temperate forests in three localities of Germany and Switzerland. We quantified available soil water storage capacity (AWC) in plots laid in the transition zone from oak to beech dominated forests. The plots were classified as ‘dry’ (AWC < 60 mL) and ‘less-dry’ (AWC > 60 mL). We performed dendroecological analyses starting from 1951 in continuous and discontinuous series to study the influence of climatic drought (i.e., precipitation-potential evapotranspiration) on the radial growth of beech trees in dry and less-dry plots. We used observed values for this analysis and did not use interpolated values from interpolated historical records in this study. We selected six drought events to study the resistance, recovery, and resilience of beech trees to drought at a discontinuous level. The radial growth was significantly higher in less-dry plots than dry plots. The increase in drought had reduced tree growth. Frequent climatic drought events resulted in more significant correlations, hence, increased the dependency of tree growth on AWC. We showed that the recovery and resilience to climatic drought were higher in trees in less-dry plots than dry plots, but it was the opposite for resistance. The resistance, recovery, and resilience of the trees were heterogeneous between the events of drought. Mean growth of beech trees (basal area increment) were negatively impacted by neighborhood competition and positively influenced by canopy openness. We emphasized that beech trees growing on soil with low AWC are at higher risk of growth decline. We concluded that changes in soil water conditions even at the microsite level could influence beech trees’ growth in their drought limit under the changing climate. Along with drought, neighborhood competition and lack of light can also reduce beech trees’ growth. This study will enrich the state of knowledge about the ongoing debate on the vulnerability of beech trees to drought in Europe.

scholarly journals Cost Analysis of a Novel Method for Ecological Compensation—A Study of the Translocation of Dead Wood

2021 ◽  
Vol 13 (11) ◽  
pp. 6075
Author(s):  
Ola Lindroos ◽  
Malin Söderlind ◽  
Joel Jensen ◽  
Joakim Hjältén
Keyword(s):  
Cost Efficiency ◽  
Dead Wood ◽  
Road Transportation ◽  
Ecological Value ◽  
Ecological Compensation ◽  
Work Time ◽  
Delivery Times ◽  
Novel Method ◽  
Cost Efficient ◽  
The Cost

Translocation of dead wood is a novel method for ecological compensation and restoration that could, potentially, provide a new important tool for biodiversity conservation. With this method, substrates that normally have long delivery times are instantly created in a compensation area, and ideally many of the associated dead wood dwelling organisms are translocated together with the substrates. However, to a large extent, there is a lack of knowledge about the cost efficiency of different methods of ecological compensation. Therefore, the costs for different parts of a translocation process and its dependency on some influencing factors were studied. The observed cost was 465 SEK per translocated log for the actual compensation measure, with an additional 349 SEK/log for work to enable evaluation of the translocation’s ecological results. Based on time studies, models were developed to predict required work time and costs for different transportation distances and load sizes. Those models indicated that short extraction and insertion distances for logs should be prioritized over road transportation distances to minimize costs. They also highlighted a trade-off between costs and time until a given ecological value is reached in the compensation area. The methodology used can contribute to more cost-efficient operations and, by doing so, increase the use of ecological compensation and the benefits from a given input.

scholarly journals Quantifying Understory Complexity in Unmanaged Forests Using TLS and Identifying Some of Its Major Drivers

2021 ◽  
Vol 13 (8) ◽  
pp. 1513
Author(s):  
Dominik Seidel ◽  
Peter Annighöfer ◽  
Christian Ammer ◽  
Martin Ehbrecht ◽  
Katharina Willim ◽  
...  
Keyword(s):  
Laser Scanning ◽  
Structural Equation Models ◽  
Light Availability ◽  
Structural Complexity ◽  
Basal Area ◽  
Ecosystem Functions ◽  
Canopy Openness ◽  
Seasonal Precipitation ◽  
Wide Range ◽  
Precipitation And Temperature

The structural complexity of the understory layer of forests or shrub layer vegetation in open shrublands affects many ecosystem functions and services provided by these ecosystems. We investigated how the basal area of the overstory layer, annual and seasonal precipitation, annual mean temperature, as well as light availability affect the structural complexity of the understory layer along a gradient from closed forests to open shrubland with only scattered trees. Using terrestrial laser scanning data and the understory complexity index (UCI), we measured the structural complexity of sites across a wide range of precipitation and temperature, also covering a gradient in light availability and basal area. We found significant relationships between the UCI and tree basal area as well as canopy openness. Structural equation models (SEMs) confirmed significant direct effects of seasonal precipitation on the UCI without mediation through basal area or canopy openness. However, annual precipitation and temperature effects on the UCI are mediated through canopy openness and basal area, respectively. Understory complexity is, despite clear dependencies on the available light and overall stand density, significantly and directly driven by climatic parameters, particularly the amount of precipitation during the driest month.

WHITE ANTS DESTROYING LIVING TREES AND CHANGING THF FOLIAGE, IN CAMBRIDGE, MASS

1885 ◽  
Vol 17 (7) ◽  
pp. 134-136
Author(s):  
H. A. Hagen
Keyword(s):  
Dead Wood ◽  
The South ◽  
The Earth ◽  
The Common

The common white ant, Termes flavipes, destroys dead wood, stumps of trees and timber, just as does its nearest relative, T. lucifugus, in Europe. Of the latter species some cases are reported where living pines and oaks have been destroyed in the South of France. For T. flavipes, only one case is known, in which living grape vines in a hot house in Salem were injured. (S. H. Scudder. Proc. Boston, N. H. S., vol. 7, p. 287). Now the earth in the hot houses here in Cambridge is largely infested by white ants, but as far as I know, no destruction of plants has been observed. I was very much interested by the information from Mr. F. W. Putnam that in a garden in Irwing street living maples were largely infested by white ants. The evidence of the truth of this information was apparent by the first glance at the trees.

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