scholarly journals An experiment in modeling Rocky Mountain forest ecosystems /

1971 ◽  
Author(s):  
John R. Jones ◽  
Keyword(s):  
Forest Ecosystems ◽  
Rocky Mountain ◽  
Mountain Forest

scholarly journals The state of mountain forest ecosystems in the Bashkir Nature Reserve (Southern Urals)

2021 ◽  
Vol 35 ◽  
pp. 00006
Author(s):  
Ainur Biembetov ◽  
Nur Yanybayev ◽  
Ilnar Valiev
Keyword(s):  
Forest Management ◽  
Environmental Monitoring ◽  
Forest Ecosystems ◽  
Nature Reserve ◽  
Southern Urals ◽  
The State ◽  
Mountain Forest ◽  
The Southern Urals ◽  
Current State

Environmental monitoring of specially protected natural reservations in Russia makes it necessary to analyze periodically the parameters of natural reservations to identify the state of components of nature. The Bashkir Nature Reserve is located in the Southern Urals. The availability of materials on forest management in 1956, 1969, 1979, and 2016 is one of the special features of the scientific fund of the Bashkir Nature Reserve. The analysis of these materials showed stable positive dynamics of the development of coniferous and small-leaved deciduous forestry and its current state.

DECAY IN SUBALPINE SPRUCE ON THE ROCKY MOUNTAIN FOREST RESERVE IN ALBERTA

1956 ◽  
Vol 34 (5) ◽  
pp. 805-816 ◽  
Author(s):  
D. E. Etheridge
Keyword(s):  
Picea Glauca ◽  
Rocky Mountain ◽  
Ground Cover ◽  
Major Portion ◽  
Mountain Forest ◽  
Forest Reserve ◽  
Butt Rot ◽  
Coniophora Puteana ◽  
The Third ◽  
Unidentified Fungus

Data from 456 living subalpine spruce on six 0.1-ac. plots in the Bow River Forest in 1950 and six 0.2-ac. plots in the Crowsnest, Bow River, and Clearwater Forests in 1952 show a total of 203 separate infections of which approximately half occurred in the basal part of the trees. Most of the butt rot was associated with Polyporus circinatus var. dualis Peck, Flammula connissans Fr., and an unidentified fungus designated "Unknown C". Coniophora puteana (Schum. ex Fr.) Karst. was the fungus associated with the major portion of the brown butt rot. Among the white trunk rots, Stereum sanguinolentum Alb. & Schw. ex Fr. was the fungus most frequently isolated from infected trees and Fames pint (Thore) Lloyd was responsible for the largest, cull losses. Peniophora septentrionalis Laurila, which was isolated from Picea glauca (Moench) Voss and P. engelmannii Parry, was the third most important fungus associated with trunk rot. Trunk rots account for 70% of the decay losses while fungi producing white rots account for 93.6% of the total decay. The incidence of decay increased progressively with age at different rates for trees on "dry" and "moist" sites. The two sites are characterized by distinctive ground cover associations.

scholarly journals Effects of needleleaf forest cover on radiation and snowmelt dynamics in the Canadian Rocky Mountains

2011 ◽  
Vol 41 (3) ◽  
pp. 608-620 ◽  
Author(s):  
C. R. Ellis ◽  
J. W. Pomeroy ◽  
R. L.H. Essery ◽  
T. E. Link
Keyword(s):  
Forest Cover ◽  
Longwave Radiation ◽  
Rocky Mountain ◽  
Shortwave Radiation ◽  
Mountain Forest ◽  
Spruce Forest ◽  
Total Radiation ◽  
Canadian Rocky Mountains ◽  
Forest Sites ◽  
Extensive Field

Radiation is the main energy source for snowpack warming and melt in mountain needleleaf forests, and runoff from these forests is the main contributor to spring river flows in western North America. Utilizing extensive field observations, the effect of needleleaf forest cover on radiation and snowmelt timing was quantified at pine and spruce forest sites and nearby clearings of varying slope and aspect in an eastern Canadian Rocky Mountain headwater basin. Compared with open clearing sites, shortwave radiation was much reduced under forest cover, resulting in smaller differences in melt timing between forested slopes relative to open slopes with different aspects. In contrast, longwave radiation to snow was substantially enhanced under forest cover, especially at the dense spruce forest sites where longwave radiation dominated total energy for snowmelt. In both pine and spruce environments, forest cover acted to substantially reduce total radiation to snow and delay snowmelt timing on south-facing slopes while increasing total radiation and advancing snowmelt timing on north-facing slopes. Results strongly suggest that impacts on radiation to snow and snowmelt timing from changes in mountain forest cover will depend much on the slope and aspect at which changes occur.

Effect of timber harvesting on microbial biomass fluxes in a northern Rocky Mountain forest soil

1986 ◽  
Vol 16 (5) ◽  
pp. 1076-1081 ◽  
Author(s):  
James A. Entry ◽  
Nellie M. Stark ◽  
Howard Loewenstein
Keyword(s):  
Microbial Biomass ◽  
Snow Cover ◽  
Forest Soil ◽  
Soil Ph ◽  
Rocky Mountain ◽  
Timber Harvesting ◽  
Soil Microbial Activity ◽  
Mountain Forest ◽  
Clear Cut ◽  
Soil Temperatures

Microbial biomass and relative bacterial and fungal percentages were measured in organic forest soil from a Rocky Mountain site subjected to four harvesting treatments: RL, clear-cut and residue left; RR, clear-cut and residue removed; RB, clear-cut and residue burned; C, uncut control. Microbial biomass peaked in spring and fall regardless of treatment. Biomass in soil from the RB treatment was significantly (p < 0.05) less than that in soil from the other treatments most of the year; biomass did not significantly differ in soil from the RR and C treatments. During summer and winter, microbial biomass in soil from the RL treatment was significantly greater than that in soil from any other treatment, probably because of the large amount of organic residue left after harvest; moreover, this residue insulated the soil, preventing it from drying or freezing. At soil temperatures above 5 °C, microbial biomass correlated positively with soil moisture regardless of treatment; at soil temperatures below 2.5 °C, microbial biomass correlated positively with increasing soil temperature. During periods with snow cover, bacterial and fungal percentages were roughly equal regardless of treatment; during the rest of the year, bacterial percentages were high in the RL and RB treatments and low in the RR and C treatments. During periods without snow cover, bacterial and fungal percentages correlated positively with increasing soil pH; however, at near-freezing temperatures the percentage of bacteria and fungi seemed unaffected by soil pH. These findings suggest that treatments that remove a large portion of available site nutrients while reducing soil microbial activity could limit stand development.

scholarly journals Ecosystem services from mountain forest ecosystems: conceptual framework, approach and challenges

2020 ◽  
Vol 21 (1) ◽  
pp. 47-68
Author(s):  
Maria Glushkova ◽  
Miglena Zhiyanski ◽  
Stoyan Nedkov ◽  
Rositsa Yaneva ◽  
Lora Stoeva
Keyword(s):  
Ecosystem Services ◽  
Forest Ecosystems ◽  
Water Cycle ◽  
Well Being ◽  
Decision Makers ◽  
Mountain Forest ◽  
Territorial Development ◽  
Mountain Areas ◽  
Mountain Ecosystems ◽  
Wide Range

Mountain ecosystems play an essential role in sustainable mountain development, providing benefits and values to humanity not only for the rich biodiversity they contain, but also because of their important role in climate regulation, water cycle, provisioning of recreation, tourism, cultural or spiritual values. The high biodiversity of the mountain areas allow the provision of a wide range of ecosystem services. However, different impacts to the environment threaten the delivery of these services and, consequently, the quality of life of people, both living in the mountains and outside the mountains. Recognizing, demonstrating and capturing the value of ecosystem services can play an important role in setting policy directions for ecosystem management and conservation and, thus, in increasing the provision of ecosystem services and their contributions to human well-being. Quantifying and mapping of these benefits can also help managers and decision makers to realize the importance of these sites for conservation and to allow the proper understandings of the impacts of mountain forest ecosystems on territorial development and welfare of local populations. The paper aims to outline the relevance and applicability of the ecosystem services approach for the assessment of the condition of mountain ecosystems and the services, they provide, for better understanding by the scientific community and to support decision makers in sustainable management of mountain regions.

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