Shade-tolerant tree species from temperate forests differ in their competitive abilities: A case study from Roztocze, south-eastern Poland

2012 ◽  
Vol 282 ◽  
pp. 28-35 ◽  
Author(s):  
Jerzy Szwagrzyk ◽  
Janusz Szewczyk ◽  
Zbigniew Maciejewski
Keyword(s):  
Tree Species ◽  
Temperate Forests ◽  
South Eastern ◽  
Competitive Abilities

scholarly journals Protection is better than management to maintain tree species: A case study of lesser-Himalayan moist-temperate forests of Pakistan

2021 ◽  
Vol 6 ◽  
pp. 100149
Author(s):  
Waseem Hayat ◽  
Salman Khan ◽  
Akhtar Iqbal ◽  
Shakeel Ahmad ◽  
Arshad Mehmood Abbasi
Keyword(s):  
Tree Species ◽  
Temperate Forests ◽  
Better Than

scholarly journals Over half of western United States' most abundant tree species in decline

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Hunter Stanke ◽  
Andrew O. Finley ◽  
Grant M. Domke ◽  
Aaron S. Weed ◽  
David W. MacFarlane
Keyword(s):  
United States ◽  
Tree Species ◽  
Tree Mortality ◽  
Temperate Forests ◽  
Size Structure ◽  
Forest Disturbance ◽  
Population Decline ◽  
Western United States ◽  
Scale Transformation ◽  
Forest Composition

AbstractChanging forest disturbance regimes and climate are driving accelerated tree mortality across temperate forests. However, it remains unknown if elevated mortality has induced decline of tree populations and the ecological, economic, and social benefits they provide. Here, we develop a standardized forest demographic index and use it to quantify trends in tree population dynamics over the last two decades in the western United States. The rate and pattern of change we observe across species and tree size-distributions is alarming and often undesirable. We observe significant population decline in a majority of species examined, show decline was particularly severe, albeit size-dependent, among subalpine tree species, and provide evidence of widespread shifts in the size-structure of montane forests. Our findings offer a stark warning of changing forest composition and structure across the western US, and suggest that sustained anthropogenic and natural stress will likely result in broad-scale transformation of temperate forests globally.

Strengthening of box girder bridges with external prestressing - case study for the Langeland Bridge.

2021 ◽  
Author(s):  
Ulrik Sloth Andersen
Keyword(s):  
Additional Analysis ◽  
Box Girders ◽  
Box Girder Bridges ◽  
Box Girder ◽  
Basic Principles ◽  
Structural Assessment ◽  
South Eastern ◽  
Girder Bridges ◽  
External Prestressing

<p>This paper presents the basic principles for strengthening of bridges and other structures through the use of external prestressing. A case study that includes strengthening of the approach spans for the Langeland Bridge in the south-eastern part of Denmark is included.</p><p>During a recent rehabilitation, corrosion of the post-tensioned tendons was discovered inside the box girders of the bridge. Additional analysis of the extent of the corrosion and a structural assessment was undertaken. Based on this, a strengthening project was carried out, and strengthening with external prestressing is currently being implemented.</p>

Diversity of plant assemblages in managed temperate forests: a case study in Normandy (France)

2003 ◽  
Vol 175 (1-3) ◽  
pp. 321-337 ◽  
Author(s):  
Michaël Aubert ◽  
Didier Alard ◽  
Fabrice Bureau
Keyword(s):  
Temperate Forests ◽  
Plant Assemblages
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