scholarly journals Pathogenicity of Neonectria fuckeliana on Norway Spruce Clones in Sweden and Potential Management Strategies

Forests ◽  
2018 ◽  
Vol 9 (3) ◽  
pp. 105 ◽  
Author(s):  
Martin Pettersson ◽  
Venche Talgø ◽  
John Frampton ◽  
Bo Karlsson ◽  
Jonas Rönnberg
Keyword(s):  
Norway Spruce ◽  
Management Strategies ◽  
Neonectria Fuckeliana

scholarly journals Management of spontaneously regenerated mixed stands of birch and Norway spruce in Sweden

Silva Fennica ◽  
2021 ◽  
Vol 55 (4) ◽  
Author(s):  
Felicia Dahlgren Lidman ◽  
Emma Holmström ◽  
Tomas Lundmark ◽  
Nils Fahlvik
Keyword(s):  
Interest Rates ◽  
Norway Spruce ◽  
Management Strategy ◽  
Management Strategies ◽  
Stem Volume ◽  
Stand Age ◽  
Production Volume ◽  
Total Production ◽  
Mixed Stands ◽  
Spontaneous Regeneration

Timber production and profitability were evaluated for spontaneously-regenerated mixtures on two formerly clearcut areas. The abandoned areas developed into birch-dominated ( Roth and Ehrh.) stands with successional ingrowth of Norway spruce ( (L.) H. Karst.). An experiment with randomized treatments within blocks was established, using three management strategies and one unthinned control, resulting in variation in optimal rotation age, merchantable volume and species composition. The management strategies were evaluated based on total production (volume) by using measured growth data 42 years after clearcutting and the modelled future stand development. The long-term effects of spontaneous regeneration and management strategies were evaluated based on land expectation value (LEV) and compared with a fifth management strategy using artificial regeneration and intense thinnings. 12 years after treatment, at a stand age of 42 years, the unthinned control had produced the highest total stem volume. At interest rates of 2% or higher, the unmanaged forest was an economically viable strategy, even compared to an intensive management strategy with a preferred merchantable timber species. Interest rates clearly impacted the profitability of the different management strategies. This study shows that when spontaneous regeneration is successful and dense, the first competition release can have a high impact on the development of future crop trees and on the species mixture.Betula pendulaBetula pubescensPicea abies

scholarly journals Norway Spruce Survival Rate in Two Forested Landscapes, 1975–2016

Forests ◽  
2020 ◽  
Vol 11 (7) ◽  
pp. 745
Author(s):  
Endijs Bāders ◽  
Oskars Krišāns ◽  
Jānis Donis ◽  
Didzis Elferts ◽  
Ieva Jaunslaviete ◽  
...  
Keyword(s):  
Forest Management ◽  
Norway Spruce ◽  
Management Strategies ◽  
Age Groups ◽  
Management Planning ◽  
Forest Management Planning ◽  
Forest Inventories ◽  
Age Related ◽  
Spruce Stands ◽  
Forested Landscapes

The increasing frequency and severity of natural disturbances (e.g., storms and insect outbreaks) due to climate change are expected to reduce the abundance of Norway spruce stands in the European forests. Under such conditions, the assessment of status quo on focusing on survival of Norway spruce stands are essential for the agility of forest management strategies. The dynamics (mortality rate) of Norway spruce stands in hemiboreal forests based on forest inventories for the period from 1975 to 2016 (inventories of 1975, 1985, 1999, 2011 and 2016) were analyzed in two forest landscapes in the western and eastern parts of Latvia (Vane and Dviete, respectively). The spatiotemporal changes in age-dependent mortality differing by abundance of Norway spruce and disturbance regime were assessed, focusing on the transitions of stands between age groups (inventories). The age-related changes in probability of stands transitioning into the next age group contrasted (p < 0.001) between sites. In Vane, the survival of stands between inventories was constant (ca. 90%), while in Dviete, it decreased sharply from 85.7% during 1985–1999 inventories to 49.3% in 2011–2016. Age-related decreases in stand survival showed local dependencies between both landscapes, namely, in Vane, notable decreases started from 61 years, while in Dviete, the downward trends started already from 31 years, probably due to different disturbance regimes. This suggests that, in forest management planning, the different outcomes for mortality patterns between both landscapes must be considered and should not be generalized for a whole country.

Incidence and spread of Heterobasidion root rot in uneven-aged Norway spruce stands

2013 ◽  
Vol 43 (9) ◽  
pp. 872-877 ◽  
Author(s):  
Tuula Piri ◽  
Sauli Valkonen
Keyword(s):  
Norway Spruce ◽  
Root Rot ◽  
Secondary Infection ◽  
Management Strategies ◽  
Tree Size ◽  
Size Classes ◽  
Tree Generation ◽  
Spruce Stands ◽  
Successive Generations ◽  
Overstory Trees

Notwithstanding Norway spruce (Picea abies (L.) Karst.) is highly prone to root rot caused by Heterobasidion parviporum Niemelä & Korhonen, but little is known about the epidemiology of Heterobasidion root rot in spruce stands applied to uneven-aged management. To get insight into the development of Heterobasidion infections in this type of forest, the size and spatial distribution of individual genets of H. parviporum were determined in five uneven-aged managed Norway spruce stands in southern Finland. In these stands, all tree size classes (regeneration, intermediate, and overstory trees) were infected by H. parviporum. The average number of trees and stumps infected by a single genet ranged from 3 to 6.3 (mean 4.4) among study plots. All Heterobasidion genets identified from overstory trees or stumps had spread to the younger tree generation. Secondary infection from overstory trees was the main way of infection (at least 85% of all infections) among the regeneration and intermediate trees. The results indicate that uneven-aged management strategies that maintain continuous spruce regeneration favour the secondary spread of H. parviporum between different tree size classes and may compromise the production of high-quality timber over successive generations.

Improving Speech and Language Services through Effective Time Management

1983 ◽  
Vol 14 (2) ◽  
pp. 86-91 ◽  
Author(s):  
Barbara W. Travers
Keyword(s):  
Time Management ◽  
Management Strategies ◽  
Federal State ◽  
Speech Language Pathologist ◽  
School Based ◽  
Work Area ◽  
Paper Work ◽  
Areas Of Concern ◽  
State And Local ◽  
Therapeutic Services

This paper presents strategies for increasing the effectiveness and efficiency of the school-based speech-language pathologist. Various time management strategies are adapted and outlined for three major areas of concern: using time, organizing the work area, and managing paper work. It is suggested that the use of such methods will aid the speech-language pathologist in coping with federal, state, and local regulations while continuing to provide quality therapeutic services.

A Case Study: Unique Challenges of an Adolescent Female With Autism Spectrum Disorder

2020 ◽  
Vol 5 (1) ◽  
pp. 314-325
Author(s):  
Kimberly F. Frazier ◽  
Jessica Collier ◽  
Rachel Glade
Keyword(s):  
Autism Spectrum Disorder ◽  
Cognitive Abilities ◽  
Social Cognitive ◽  
Social Performance ◽  
Management Strategies ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Self Management ◽  
Adolescent Female ◽  
Social Thinking

Background The aim of this study was to determine the clinical efficacy of combining self-management strategies and a social thinking approach to address the social performance and executive function of an adolescent female with autism spectrum disorder. Method This research examined the effects of a social knowledge training program, “Think Social,” as well as strategies to improve higher order cognitive abilities. Results and Conclusion Although quantitative improvement was not found, several qualitative gains in behavior were noted for the participants of this study, suggesting a benefit from using structured environmental cues of self-management strategies, as well as improved social understanding through social cognitive training.

Understanding Limited Use of Amplification in Infants and Children Who Are Hard of Hearing

2015 ◽  
Vol 25 (1) ◽  
pp. 15-23 ◽  
Author(s):  
Ryan W. McCreery ◽  
Elizabeth A. Walker ◽  
Meredith Spratford
Keyword(s):  
Hard Of Hearing ◽  
Hearing Aid ◽  
Management Strategies ◽  
Infants And Children ◽  
Future Research ◽  
Research Needs ◽  
Case Examples ◽  
Hearing Aid Use ◽  
Wide Range ◽  
In Infants And Children

The effectiveness of amplification for infants and children can be mediated by how much the child uses the device. Existing research suggests that establishing hearing aid use can be challenging. A wide range of factors can influence hearing aid use in children, including the child's age, degree of hearing loss, and socioeconomic status. Audiological interventions, including using validated prescriptive approaches and verification, performing on-going training and orientation, and communicating with caregivers about hearing aid use can also increase hearing aid use by infants and children. Case examples are used to highlight the factors that influence hearing aid use. Potential management strategies and future research needs are also discussed.

23: Renal Arterial Injuries: A Single Center Analysis of Management Strategies and Outcomes

2007 ◽  
Vol 177 (4S) ◽  
pp. 9-9
Author(s):  
Ephrem O. Olweny ◽  
Sean P. Elliott ◽  
Thomas X. Minor ◽  
Jack W. McAninch
Keyword(s):  
Management Strategies ◽  
Single Center ◽  
Arterial Injuries
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