scholarly journals Forest floor manipulation effects on the relationship between aggregate stability and ectomycorrhizal fungi

2021 ◽  
pp. 119873
Author(s):  
David L. Dick ◽  
Terrence G. Gardner ◽  
Juan P. Frene ◽  
Joshua L. Heitman ◽  
Eric B. Sucre ◽  
...  
Keyword(s):  
Ectomycorrhizal Fungi ◽  
Forest Floor ◽  
Aggregate Stability ◽  
The Relationship

Conditional Outcomes in the Relationship between Pine and Ectomycorrhizal Fungi in Relation to Biotic and Abiotic Environment

Oikos ◽  
1997 ◽  
Vol 80 (1) ◽  
pp. 112 ◽  
Author(s):  
Heikki Setälä ◽  
Johanna Rissanen ◽  
Anna Mari Markkola ◽  
Heikki Setala
Keyword(s):  
Ectomycorrhizal Fungi ◽  
Abiotic Environment ◽  
Conditional Outcomes ◽  
The Relationship

scholarly journals The Dark Septate Endophytes and Ectomycorrhizal Fungi Effect on Pinus tabulaeformis Carr. Seedling Growth and their Potential Effects to Pine Wilt Disease Resistance

Forests ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 140 ◽  
Author(s):  
Honglong Chu ◽  
Chuyan Wang ◽  
Zhumei Li ◽  
Haihua Wang ◽  
Yuguo Xiao ◽  
...  
Keyword(s):  
Ectomycorrhizal Fungi ◽  
Growth Traits ◽  
Pine Wilt Disease ◽  
Wilt Disease ◽  
Pinus Tabulaeformis ◽  
Conifer Forest ◽  
Cumulative Mortality ◽  
Pine Wilt ◽  
Pinus Tabulaeformis Carr ◽  
The Relationship

Pine wilt disease (PWD), a worldwide threat to pine forests, has caused tremendous damage to conifer forest in the world. However, little research has been conducted on the relationship between symbiosis functions of root associated fungi and pine wilt disease. In this study, we assessed the influence of seven ectomycorrhizal fungi (ECMF) and five dark septate endophytic fungi (DSE) on the growth traits and root morphology as well as the correlation of these parameters to the cumulative mortality and the morbidity rates in Pinus tabulaeformis Carr.showed the lowest cumulative mortality rates. We propose that the ECMF/DSE symbiosis enhanced the resistance of pine wilt disease via mitigation the dysfunction of water caused by PWN infection. Our research provided evidence that inoculation of ECMF/DSE could be a potential way for pine wilt disease prevention. To find highly efficient fungi for pine wilt disease management, more ECMF and DSE species should be tested.

scholarly journals Effective Molecular Identification of Ectomycorrhizal Fungi: Revisiting DNA Isolation Methods

Forests ◽  
2019 ◽  
Vol 10 (3) ◽  
pp. 218 ◽  
Author(s):  
Daniel Janowski ◽  
Robin Wilgan ◽  
Tomasz Leski ◽  
Leszek Karliński ◽  
Maria Rudawska
Keyword(s):  
Ectomycorrhizal Fungi ◽  
Dna Isolation ◽  
Morphological Identification ◽  
Root Tips ◽  
Ectomycorrhizal Symbiosis ◽  
Isolation Methods ◽  
Low Mass ◽  
Purification Methods ◽  
The Relationship ◽  
Dna Isolation Protocol

A better understanding of ectomycorrhizal symbiosis leads to numerous advancements in forest management and environmental protection. The morphological identification of the ectomycorrhizae often proves to be misleading. For this reason, in order to study the ectomycorrhizal fungi communities, a number of molecular methods that require the isolation of nucleic acids are being used. However, ectomycorrhizal root tips, low mass heterogenic material rich in inhibitors, are a recalcitrant substrate in DNA isolation. It is common for published studies to include some number of unidentified root tips in their results, in spite of diverse isolation protocols being available to researchers. This study aims to analyze the relationship between the collected fungal material and later isolation results, and to propose a DNA isolation protocol specifically optimized for ectomycorrhizal root tips. It was found that the taxonomic position can be used to predict the potential isolation efficiency, with Ascomycota being generally more difficult from which to isolate DNA. After a number of cell lysis and lysate purification methods were evaluated, the joined approach of mechanical and chemical lysis, followed by silica column purification, was found to provide the best results, even with recalcitrant material.

scholarly journals Quantifying the missing link between forest albedo and productivity in the boreal zone

2016 ◽  
Vol 13 (21) ◽  
pp. 6015-6030 ◽  
Author(s):  
Aarne Hovi ◽  
Jingjing Liang ◽  
Lauri Korhonen ◽  
Hideki Kobayashi ◽  
Miina Rautiainen
Keyword(s):  
Forest Management ◽  
Forest Floor ◽  
Basal Area ◽  
Shortwave Radiation ◽  
Coniferous Forests ◽  
Radiative Transfer Model ◽  
Radiation Balance ◽  
Transfer Model ◽  
Intensively Managed ◽  
The Relationship

Abstract. Albedo and fraction of absorbed photosynthetically active radiation (FAPAR) determine the shortwave radiation balance and productivity of forests. Currently, the physical link between forest albedo and productivity is poorly understood, yet it is crucial for designing optimal forest management strategies for mitigating climate change. We investigated the relationships between boreal forest structure, albedo and FAPAR using a radiative transfer model called Forest Reflectance and Transmittance model FRT and extensive forest inventory data sets ranging from southern boreal forests to the northern tree line in Finland and Alaska (N  =  1086 plots). The forests in the study areas vary widely in structure, species composition, and human interference, from intensively managed in Finland to natural growth in Alaska. We show that FAPAR of tree canopies (FAPARCAN) and albedo are tightly linked in boreal coniferous forests, but the relationship is weaker if the forest has broadleaved admixture, or if canopies have low leaf area and the composition of forest floor varies. Furthermore, the functional shape of the relationship between albedo and FAPARCAN depends on the angular distribution of incoming solar irradiance. We also show that forest floor can contribute to over 50 % of albedo or total ecosystem FAPAR. Based on our simulations, forest albedos can vary notably across the biome. Because of larger proportions of broadleaved trees, the studied plots in Alaska had higher albedo (0.141–0.184) than those in Finland (0.136–0.171) even though the albedo of pure coniferous forests was lower in Alaska. Our results reveal that variation in solar angle will need to be accounted for when evaluating climate effects of forest management in different latitudes. Furthermore, increasing the proportion of broadleaved trees in coniferous forests is the most important means of maximizing albedo without compromising productivity: based on our findings the potential of controlling forest density (i.e., basal area) to increase albedo may be limited compared to the effect of favoring broadleaved species.

scholarly journals Quantifying the missing link between forest albedo and productivity in the boreal zone

2016 ◽  
Author(s):  
Aarne Hovi ◽  
Jingjing Liang ◽  
Lauri Korhonen ◽  
Hideki Kobayashi ◽  
Miina Rautiainen
Keyword(s):  
Forest Management ◽  
Forest Floor ◽  
Shortwave Radiation ◽  
Coniferous Forests ◽  
Radiative Transfer Model ◽  
Radiation Balance ◽  
Transfer Model ◽  
Intensively Managed ◽  
The Relationship ◽  
Solar Angle

Abstract. Albedo and fraction of absorbed photosynthetically active radiation (FAPAR) determine the shortwave radiation balance and productivity of forests. Currently, the physical link between forest albedo and productivity is poorly understood, yet it is crucial for designing optimal forest management strategies for mitigating climate change. We investigated the relationships between boreal forest structure, albedo and FAPAR using radiative transfer model FRT and extensive forest inventory data sets ranging from southern boreal forests to the northern tree line in Finland and Alaska (N = 1086 plots). The forests in the study areas vary widely in structure, species composition, and human interference, from intensively managed in Finland to natural growth in Alaska. We show that FAPAR of tree canopies (FAPARCAN) and albedo are tightly linked in boreal coniferous forests, but the relationship is weaker if the forest has broadleaved admixture, or if canopies have low leaf area and the composition of forest floor varies. Furthermore, the functional shape of the relationship between albedo and FAPARCAN depends on solar angle. We also show that forest floor can contribute to over 50 % of albedo or total ecosystem FAPAR. Based on our simulations, forest albedos vary notably across the biome. Because of larger proportion of broadleaved trees, the forests in Alaska have higher albedo (0.141–0.184) than those in Finland (0.136–0.171) even though the albedo of pure coniferous forests is lower in Alaska. Our results reveal that variation in solar angle will need to be accounted for when evaluating climate effects of forest management in different latitudes. Furthermore, increasing the proportion of broadleaved trees in coniferous forests is the most important means of maximizing albedo without compromising productivity: based on our findings the potential of controlling forest density (i.e., basal area) to increase albedo may be limited compared to the effect of favoring broadleaved species.

Development of an improved Vertisol stability test for SOILpak

Soil Research ◽  
1997 ◽  
Vol 35 (4) ◽  
pp. 843 ◽  
Author(s):  
Damien J. Field ◽  
David C. McKenzie ◽  
Anthony J. Koppi
Keyword(s):  
Surface Soil ◽  
Management Strategies ◽  
Aggregate Stability ◽  
Soil Management ◽  
Exchangeable Sodium Percentage ◽  
Exchangeable Sodium ◽  
Management Zones ◽  
Sodium Percentage ◽  
The Stability ◽  
The Relationship

The stability in water of soil from 3 contrasting Vertisols was measured using5 tests. Two end-over-end shaking procedures, the Loveday & Pyledispersion test, and the relatively rapid SOILpak procedure of Daniells & Larsen were assessed. The latter method has been modified to deal with severaldeficiencies such as its lack of score subdivisions; the new procedure isreferred to as the ‘aggregate stability in water’ (ASWAT) test. Wecorrelated data from all the tests under consideration to provide definitionsof the ‘critical’ point at which dispersion becomes a problem forland managers. Three soil management zones have been defined provisionallyusing data from the ASWAT and end-over-end ‘aggregate stability’tests. The scheme allows appropriate surface soil management strategies to bepredicted using the ASWAT test. The relationship between data from the ASWATtest and exchangeable sodium percentage indicated that factors other thanexchangeable sodium strongly influence dispersibility of the samples underconsideration.

Effects of the fabric on the relationship between aggregate stability and color in a Regosol–Umbrisol soilscape

Geoderma ◽  
2011 ◽  
Vol 162 (1-2) ◽  
pp. 86-95 ◽  
Author(s):  
M. Sánchez-Marañón ◽  
J.M. Martín-García ◽  
R. Delgado
Keyword(s):  
Aggregate Stability ◽  
The Relationship
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