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  • MacKenzie, M. Derek  (3)
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  • 1
    Online Resource
    Online Resource
    Trembling aspen seedling establishment, growth and response to fertilization on contrasting soils used in oil sands reclamation
    Canadian Science Publishing ; 2012
    In:  Canadian Journal of Soil Science Vol. 92, No. 1 ( 2012-01), p. 143-151
    Details
    In: Canadian Journal of Soil Science, Canadian Science Publishing, Vol. 92, No. 1 ( 2012-01), p. 143-151
    Abstract: Pinno, B. D., Landhäusser, S. M., MacKenzie, M. D., Quideau, S. A. and Chow, P. S. 2012. Trembling aspen seedling establishment, growth and response to fertilization on contrasting soils used in oil sands reclamation. Can. J. Soil Sci. 92: 143–151. Trembling aspen (Populus tremuloides) is an important tree species for land reclamation. This study determined trembling aspen germination, establishment, initial growth and response to fertilizer on contrasting oil sands reclamation soils. In a greenhouse, eight soils varying in total nitrogen and available phosphorus were treated with no fertilizer (control), phosphorus and potassium (PK), nitrogen (N) and all three (NPK). Soil had the greatest impact on aspen growth when no fertilizer was applied with the best growth occurring on organic-mineral material soils where growth was positively correlated with extractable and foliar potassium but not to nitrogen or phosphorus. With PK and N fertilizer, growth increases were positively correlated with foliar phosphorus concentrations of the corresponding controls. NPK fertilizer caused greater growth, bud set and root:leaf mass ratio compared with PK or N fertilizer. Soil type had little impact on germination and establishment, indicating natural aspen seedlings can potentially regenerate on all of these soils. In oil sands mining reclamation where these soils are used as surface materials, organic-mineral mixes had the greatest potential without fertilizer. With fertilizer, NPK provided maximum growth and developmental benefits.
    Type of Medium: Online Resource
    ISSN: 0008-4271 , 1918-1841
    URL: Article
    DOI: 10.4141/cjss2011-004
    Language: English
    Publisher: Canadian Science Publishing
    Publication Date: 2012
    detail.hit.zdb_id: 2017003-8
    detail.hit.zdb_id: 417254-1
    SSG: 13
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    Online Resource
  • 2
    Online Resource
    Online Resource
    Nutrient uptake and growth of fireweed ( Chamerion angustifolium ) on reclamation soils
    Canadian Science Publishing ; 2014
    In:  Canadian Journal of Forest Research Vol. 44, No. 1 ( 2014-01), p. 1-7
    Details
    In: Canadian Journal of Forest Research, Canadian Science Publishing, Vol. 44, No. 1 ( 2014-01), p. 1-7
    Abstract: Forest land reclamation after oil sands mining requires the re-establishment of self-sustaining boreal forest ecosystems consisting of native forest plant species. This greenhouse study examined germination, growth, and nutrient uptake of fireweed (Chamerion angustifolium (L.) Holub), a circumpolar species common to the boreal forest. Fireweed was grown on a variety of reclamation soil types that varied widely in nitrogen and phosphorus contents and which were subsequently amended with different fertilizer formulations. Germination, initial root growth, and aboveground growth without fertilizer were greatest on the forest floor – mineral mix soil. With fertilization, the best fireweed growth occurred with nitrogen–phosphorus–potassium (NPK) fertilization, but with N-only or PK-only fertilization, the growth response was dependent on the soil type, indicating that site-specific fertilizer blends may be necessary for maximizing plant growth. Nutrient uptake with no fertilizer amendment was greatest in the forest floor – mineral mix soil, whereas the peat – mineral mix soil showed almost no N uptake even though it had the highest soil N supply rate. Fireweed shows great potential for use in forest reclamation as it is capable of germinating and growing on reclaimed soils and is effective in taking up nutrients from the soil, thereby promoting nutrient capture, accumulation, and likely nutrient cycling on newly reclaimed sites.
    Type of Medium: Online Resource
    ISSN: 0045-5067 , 1208-6037
    URL: Article
    DOI: 10.1139/cjfr-2013-0091
    Language: English
    Publisher: Canadian Science Publishing
    Publication Date: 2014
    detail.hit.zdb_id: 1473096-0
    SSG: 23
    SSG: 12
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    Online Resource
  • 3
    Online Resource
    Online Resource
    Microbial Response to Fertilization in Contrasting Soil Materials used during Oil Sands Reclamation
    Wiley ; 2013
    In:  Soil Science Society of America Journal Vol. 77, No. 1 ( 2013-01), p. 145-154
    Details
    In: Soil Science Society of America Journal, Wiley, Vol. 77, No. 1 ( 2013-01), p. 145-154
    Abstract: Reclamation practices following open‐pit mining typically include the reconstruction of soil‐like profiles using a combination of native soil materials, industrial by‐products, and fertilizers. Our overall objective was to compare the quality of eight soil materials used during reclamation in the Athabasca oil sands region of western Canada by characterizing their microbial communities as well as their response to a range of fertilization treatments. Materials included two carbon‐rich surface soil materials, four B horizons with varying extractable phosphorus and pH, the parent geological material (PGM), and tailings sands (TSS), a by‐product of oil extraction. Measured indices of microbial activity included the activities of b‐glucosidase, acid phosphatase, and phenol oxidase. Total biomass and structure of the soil microbial community were characterized based on phospholipid fatty acid (PLFA) analysis. Soil materials and fertilization treatments were tested with multivariate regression trees and non‐metric multidimensional scaling. Material type, rather than fertilization level, had the largest impact on all microbial parameters, including biomass, activity, and composition. Only the nutrient‐poor materials (PGM, TSS, and one of the B horizons) showed a response to fertilization. The microbial composition of three of the four B horizons was more similar to the two carbon‐rich surface soil materials than it was to PGM or TSS. Hence, we propose that these subsoil materials present an advantage over the use of the underlying PGM when reconstructing upland sandy soils. Finally, results indicated that soil microbial biomass could be used as a good indicator of seedling growth when no fertilizer was applied.
    Type of Medium: Online Resource
    ISSN: 0361-5995 , 1435-0661
    URL: Article
    DOI: 10.2136/sssaj2012.0202
    RVK:
    RA 4845
    Language: English
    Publisher: Wiley
    Publication Date: 2013
    detail.hit.zdb_id: 241415-6
    detail.hit.zdb_id: 2239747-4
    detail.hit.zdb_id: 196788-5
    detail.hit.zdb_id: 1481691-X
    SSG: 13
    SSG: 21
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