Download or read book Geochemistry of Black Spruce Picea Mariana Needles and Twigs Growing Over Zones of Gold Mineralizations and Associated Induced Polarization Responses Dot Lake Area Agassiz Metallotect written by Mark Albert Fredrick Fedikow and published by . This book was released on 1996 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geochemistry of Black Spruce Picea Mariana Needles and Twigs Growing Over Zones of Gold Mineralization and Associated Induced Polarization Responses Dot Lake Area Agassiz Metallotect written by M. A. Fedikow and published by . This book was released on 1996 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Report of Activities written by Manitoba. Geological Services Branch and published by . This book was released on 1997 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Report written by Manitoba. Manitoba Energy and Mines and published by . This book was released on 1996 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1996 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of Activities written by Manitoba. Geological Survey and published by . This book was released on 2000 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geochemical Flux in Black Spruce picea Mariana Crowns and the Correlation with Root Water Uptake written by E. Sailerova and published by . This book was released on 2000 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Silvical Characteristics of Black Spruce Picea Mariana written by Miron L. Heinselman and published by . This book was released on 1957 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth and Nutrient Status of Black Spruce Seedlings as Affected by Water Table Depth written by Miroslaw M. Czapowskyj and published by . This book was released on 1986 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Genotype nitrogen Interactions in Black Spruce Picea Mariana Mill B S P written by Timothy John Mullin and published by . This book was released on 1984 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Carbon Cycling in Three Mature Black Spruce Picea Mariana Mill B S P Forests in Interior Alaska written by Jason Gene Vogel and published by . This book was released on 2004 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: "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.
Download or read book Spruce Tree Chemistry to Assist in Geological Mapping of an Overburden covered Extensional Fault Central British Columbia written by D. Chan and published by . This book was released on 1995 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth and Yield of Black Spruce on Organic Soils in Minnesota written by Donald A. Perala and published by . This book was released on 1971 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fertilization of Black Spruce on Poor Site Peatland in Minnesota written by David H. Alban and published by . This book was released on 1981 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Silvical Characteristics of Black Spruce Picea Mariana Classic Reprint written by Miron L. Heinselman and published by Forgotten Books. This book was released on 2017-11-19 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Silvical Characteristics of Black Spruce (Picea Mariana) Every effort has been made to ensure the accuracy and completeness of the information concerning the silvical characteristics of each species consistent with a brief treatment of the subject. We shall appreciate it, however, if any errors or omissions of important information are brought to our attention. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Nitrogen Fixation in a Black Spruce Picea Mariana Mill B S P Forest in Interior Alaska written by Margaret Mary Billington and published by . This book was released on 1981 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Breakdown of Picea Mariana Mill BSP black Spruce Needles in a Recently Created Northern Reservoir Southern Indian Lake Manitoba written by Patrick John Crawford and published by . This book was released on 1987 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Formation of the Southern Indian Lake reservoir, northern Manitoba, added an estimated 5.4 x 10/5 tonnes of Picea mariana *(black spruce) needles to the lake. The breakdown and macroinvertebrate colonization of needles in the lake was followed by stringing needles on monofilament line, placing the strings into 3 mm-mesh bags, and situating the bags along four shorelines representing different shoreline types (clay vs bedrock) and wave exposures (highly exposed vs protected). Sampling was done in 0-41 d and 328-384 d phases. Effects of excluding macroinvertebrates were tested by using needle strings placed in 50 um-mesh bags at the clay low exposure shoreline. Needle breakdown occurred in two stages. Initial weight losses were primarily due to leaching and microbial conditioning. Subsequent weight losses were primarily due to macroinvertebrate feeding and/or wave action. Over the entire 384 d period, leaching and microbial conditioning each accounted for ~30% of total weight losses. Macroinvertebrates accounted for ~40% of the total weight losses. High wave energies increased weight losses by as much as 18%, while heavy sediment deposition decreased weight losses by up to 30%. Processing coefficients (k) for the entire 384 d ranged from 0.0011 d-1 for the 50 um-mesh packs to 0.00097 d-1 for the 3 mm-mesh packs at the bedrock high exposure shoreline. Macroinvertebrate colonization of needle strings occurred rapidly (>3 d) and was mainly by chironomid larvae. Colonization was due to macroinvertebrates present both within the surrounding bottom substrate and drifting within the water column. Most chironomid larvae colonized the surface of the needles, however, Phaenopsectra punctipes (Wied.) and Brillia flavifrons (Joh.) larvae appeared to mine into the mesophyll region of the needles and consume them from inside. Heavy wave action, heavy sediment deposition, and the reduction of needle surface area as breakdown proceeded reduced the numbers of colonizing macroinvertebrates and caused large shifts in the structure of colonizing chironomid communities. P. punctipes was the dominant colonizer at all shorelines, except those with heavy sediment deposition. At such shorelines, Microtendipes and Procladius were dominant. Values of k for Southern Indian Lake most resemble those for conifer needle breakdown in streams, indicating the significance of wave action in the lake. The breakdown of P. mariana needles in Southern Indian Lake appeared to be a significant source of carbon during the year following impoundment, and needles may have been an important habitat for macroinvertebrates within localized areas.
