Geochemical Flux in Black Spruce (picea Mariana) Crowns and the Correlation with Root Water Uptake PDF Download
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Author: E. Sailerova Publisher: ISBN: Category : Biogeochemical prospecting Languages : en Pages : 25
Book Description
Plants have the ability to select & store metals derived from the growth substrate and distribute them to tissues. This ability is being used in biogeochemical exploration. This report describes a study to improve biogeochemical techniques applied to mineral exploration by: assessing site-specific criteria with potential to seriously affect metal uptake; and determining optimum sampling criteria for biogeochemical exploration based on tree morphology & sampling site characteristics. The study was designed to address problems associated with seasonal changes, tree morphology, and site quality. Researchers sampled crowns & outer bark from 100 black spruce trees at three different sites near Jenpeg, Manitoba, and measured water flux in trees to distinguish between seasonal metal flux attributable to changes in tree physiology and geochemical flux induced by differences in root water uptake. Results are presented which discuss correlations between element content in samples and root water uptake.
Author: E. Sailerova Publisher: ISBN: Category : Biogeochemical prospecting Languages : en Pages : 25
Book Description
Plants have the ability to select & store metals derived from the growth substrate and distribute them to tissues. This ability is being used in biogeochemical exploration. This report describes a study to improve biogeochemical techniques applied to mineral exploration by: assessing site-specific criteria with potential to seriously affect metal uptake; and determining optimum sampling criteria for biogeochemical exploration based on tree morphology & sampling site characteristics. The study was designed to address problems associated with seasonal changes, tree morphology, and site quality. Researchers sampled crowns & outer bark from 100 black spruce trees at three different sites near Jenpeg, Manitoba, and measured water flux in trees to distinguish between seasonal metal flux attributable to changes in tree physiology and geochemical flux induced by differences in root water uptake. Results are presented which discuss correlations between element content in samples and root water uptake.
Author: Miroslaw M. Czapowskyj Publisher: ISBN: Category : Black spruce Languages : en Pages : 16
Book Description
S2A greenhouse experiment was conducted to study the effects of soil water level on growth, biomass accretion, and inorganic element uptake by black spruce. One-year-old containerized seedlings were grown for 3 years at three water table depths. All trees survived for the duration of the study confirming that black spruce has a certain degree of survival tolerance to high water tables. However, tree height, diameter growth, and biomass production significantly increased as the depth to water table increased. The foliar levels of N, P, K, Mg, Fe, Zn, and B increased and those of Cu and Mn decreased with the increasing depth to the water table. For ash and Ca, differences were significant but did not follow a consistent trend. In shoots, the level of N, Ca, and Mg increased and those of ash, K, Fe, Cu, B, Al, and Mn decreased with the increasing depth to the water table. The level of P was not affected by the water table. In roots, the level of N and Ca increased and the level of ash, Mn, Fe, Al, and Cu decreased with increasing depth to the water table. The level of P, Mg, and Zn was significantly different but did not follow any trend. Foliar concentration of ash, Ca, Na, Mn, Fe, Zn, Cu, Al, and B increased and concentration of N, P, K, and Mg decreased with the increasing foliage age. In shoots, ash, Ca, Al, Fe, and Zn increased and N, P, K, Mg, and B decreased with the increasing tree and shoot age. In roots, Fe, Mn, Na, and Al increased and N, P, and Cu decreased with the increasing tree age.S3.
Author: M. A. Fedikow Publisher: ISBN: Category : Biogeochemists Languages : en Pages : 231
Book Description
Describes a detailed geochemical survey based on black spruce needles and twigs analysed in the Dot Lake area of the Lynn Lake region in Manitoba. Includes a review of the geological setting of the study area, the area's mineral deposits and occurrences, and the sampling and analytical methods used. The variation in concentration of each element determined in the needles and twigs is discussed separately with regards to overall trends and relationships to mineral occurrences, induced polarisation responses, lithologies, drainage, and possible contamination from tailings particulate and/or leachate. Analytical data tables, histograms, and statistical summaries for each element analysed are presented in the appendix.
Author: Jill Frances Johnstone Publisher: ISBN: Category : Black spruce Languages : en Pages : 46
Book Description
Black spruce (Picea mariana (Mill) B.S.P) is the dominant forest cover type in interior Alaska and is prone to frequent, stand-replacing wildfires. Through impacts on tree recruitment, the degree of fire consumption of soil organic layers can act as an important determinant of whether black spruce forests regenerate to a forest composition similar to the prefire forest, or to a new forest composition dominated by deciduous hardwoods. Here we present a simple, rule-based framework for predicting fire-initiated changes in forest cover within Alaska's black spruce forests. Four components are presented: (1) a key to classifying potential site moisture, (2) a summary of conditions that favor black spruce self-replacement, (3) a key to predicting postfire forest recovery in recently burned stands, and (4) an appendix of photos to be used as a visual reference tool. This report should be useful to managers in designing fire management actions and predicting the effects of recent and future fires on postfire forest cover in black spruce forests of interior Alaska.
Author: Jason Gene Vogel Publisher: ISBN: Category : Black spruce Languages : en Pages : 356
Book Description
"Climate warming in high latitudes is expected to alter the carbon cycle of the boreal forest. Warming will likely increase the rate of organic matter decomposition and microbial respiration. Faster organic matter decomposition should increase plant available nutrients and stimulate plant growth. I examined these predicted relationships between C cycle components in three similar black spruce forests (Picea mariana [Mill] B.S.P) near Fairbanks, Alaska, that differed in soil environment and in-situ decomposition. As predicted, greater in-situ decomposition rates corresponded to greater microbial respiration and black spruce aboveground growth. However root and soil respiration were both greater at the site where decomposition was slowest, indicating greater C allocation to root processes with slower decomposition. It is unclear what environmental factor controls spruce allocation. Low temperature or moisture could cause spruce to increase belowground allocation because slower decomposition leads to low N availability, but foliar N concentration was similar across sites and root N concentration greater at the slow decomposition site. The foliar isotopic composition of 13C indicated soil moisture was lower at the site with greater root and soil respiration. From a literature review of mature black spruce forests, it appears drier (e.g. Alaska) regions of the boreal forest have greater soil respiration because of greater black spruce C allocation belowground. Organic matter characteristics identified with pyrolysis gas chromatography-mass spectrometry correlated with microbial processes, but organic matter chemistry less influenced C and N mineralization than did temperature. Also, differences among sites in C and net N mineralization rates were few and difficult to explain from soil characteristics. Warming had a greater influence on C and N mineralization than the mediatory effect of soil organic matter chemistry. In this study, spruce root C allocation varied more among the three stands than other ecosystem components of C cycling. Spruce root growth most affected the annual C balance by controlling forest floor C accumulation, which was remarkably sensitive to root severing. Predicting the response of black spruce to climate change will require an understanding of how spruce C allocation responds to available moisture and soil temperature"--Leaves iii-iv.
Author: E. Sailerova
Author: E. Sailerova
Author: 
Author: Manitoba. Geological Survey
Author: Manitoba. Geological Services Branch
Author: Miroslaw M. Czapowskyj
Author: M. A. Fedikow
Author: Jill Frances Johnstone
Author: 
Author: Mark Albert Fredrick Fedikow![Carbon Cycling in Three Mature Black Spruce (Picea Mariana [Mill.] B.S.P) Forests in Interior Alaska PDF](https://books.google.com/books/content/images/frontcover/EF0gOAAACAAJ?fife=w80-h100)
Author: Jason Gene Vogel