Search Results - "Majdi, Hooshang"

Fine root production and turnover in a Norway spruce stand in northern Sweden: Effects of nitrogen and water manipulation by Majdi, H, Andersson, P

“…Fine root length production, biomass production, and turnover in forest floor and mineral soil (0-30 cm) layers were studied in relation to irrigated (I) and…”
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Interactive effects of soil warming and fertilization on root production, mortality, and longevity in a Norway spruce stand in Northern Sweden by Majda, H, Ohrvik, J

“…The effects of soil warming and nitrogen availability on root production, longevity and mortality were studied using minirhizotrons in irrigation (C),…”
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Impact of tree species on soil carbon stocks and soil acidity in southern Sweden by Oostra, S, Majdi, H, Olsson, M

“…The impact of tree species on soil carbon stocks and acidity in southern Sweden was studied in a non-replicated plantation with monocultures of 67-year-old ash…”
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Pools and fluxes of carbon in three Norway spruce ecosystems along a climatic gradient in Sweden by Kleja, Dan Berggren, Svensson, Magnus, Majdi, Hooshang, Jansson, Per-Erik, Langvall, Ola, Bergkvist, Bo, Johansson, Maj-Britt, Weslien, Per, Truusb, Laimi, Lindroth, Anders, Ågren, Göran I

“…This paper presents an integrated analysis of organic carbon (C) pools in soils and vegetation, within-ecosystem fluxes and net ecosystem exchange (NEE) in…”
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Longevity of Mycorrhizal Roots Depends on Branching Order and Nutrient Availability by Majdi, Hooshang, Damm, Eva, Nylund, Jan-Erik

“…• The effects are reported of branching order and nitrogen fertilization on the longevity of mycorrhizal short roots at a Norway spruce (Picea abies) stand in…”
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Root sampling methods - applications and limitations of the minirhizotron technique by Majdi, H. (Swedish Univ. of Agricultural Sciences, Uppsala (Sweden). Dept. of Ecology and Environmental Research)

“…Applications and limitations of the minirhizotron technique (non-destructive) in relation to two frequently used destructive methods (soil coreing and ingrowth…”
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Effects of fertilization with dolomite lime+PK or wood ash on root distribution and morphology in a Norway spruce stand in southwest Sweden by Majdi, H, Viebke, C.G

“…Pelleted wood ash (A) or crushed dolomite lime with added potassium and phosphorous (CaMgPK) was applied to plots in a 60-yr-old Norway spruce stand in…”
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Demography of fine roots in response to nutrient applications in a Norway spruce stand in southwestern Sweden by Majdi, H, Kangas, P

“…Effects of nitrogen and sulphur (ammonium sulphate [NS] application), nitrogen, other nutrients and water (liquid fertilization; LF), and N-free fertilizer…”
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A comparison between minirhizotron and monolith sampling methods for measuring root growth of maize (Zea mays L.) by Majdi, H. (Swedish Univ. of Agricultural Sciences, Uppsala (Sweden). Dept. of Ecology and Environmental Research), Smucker, A.J.M, Persson, H

“…Transparent plastic minirhizotron tubes have been used to evaluate spatial and temporal growth activities of plant root systems. Root number was estimated from…”
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Stand age and fine root biomass, distribution and morphology in a Norway spruce chronosequence in southeast Norway by Børja, Isabella, Wit, Heleen A. de, Steffenrem, Arne, Majdi, Hooshang

“…We assessed the influence of stand age on fine root biomass and morphology of trees and understory vegetation in 10-, 30-, 60- and 120-year-old Norway spruce…”
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Specific root length as an indicator of environmental change by Ostonen, I., Püttsepp, Ü., Biel, C, Alberton, O., Bakker, M. R., Lõhmus, K., Majdi, H., Metcalfe, D., Olsthoorn, A. F. M., Pronk, A., Vanguelova, E., Weih, M., Brunner, I.

“…Specific root length (SRL, m g −1 ) is probably the most frequently measured morphological parameter of fine roots. It is believed to characterize economic…”
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Measuring and modeling the spectrum of fine-root turnover times in three forests using isotopes, minirhizotrons, and the Radix model by Gaudinski, Julia B., Torn, M. S., Riley, W. J., Dawson, T. E., Joslin, J. D., Majdi, H.

“…Fine root (<2 mm) cycling rates are important for understanding plant ecology and carbon fluxes in forests, but they are difficult to determine and remain…”
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Effects of ammonium sulphate application on the rhizosphere, fine-root and needle chemistry in a Picea abies (L.) Karst. stand by Majdi, H. (Swedish Univ. of Agricultural Sciences, Uppsala (Sweden). Dept. of Ecology and Environmental Research), Rosengren-Brinck, U

“…Rhizosphere, fine-root and needle chemistry were investigated in a 28 year old Norway spruce stand in SW Sweden. The uptake and allocation pattern of plant…”
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Measuring fine root turnover in forest ecosystems by Majdi, H, Pregitzer, K, Moren, A.S, Nylund, J.E, Agren, G.I

“…Development of direct and indirect methods for measuring root turnover and the status of knowledge on fine root turnover in forest ecosystems are discussed…”
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Fine Root Turnover in Forest Ecosystems: Preface by Majdi, Hooshang

“…Issue Title: Fine Root Turnover in Forest Ecosystems…”
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Long-Term Warming Effects on Root Morphology, Root Mass Distribution, and Microbial Activity in Two Dry Tundra Plant Communities in Northern Sweden by Robert G. Björk, Majdi, Hooshang, Leif Klemedtsson, Lotta Lewis-Jonsson, Molau, Ulf

“…• Effects of warming on root morphology, root mass distribution and microbial activity were studied in organic and mineral soil layers in two alpine ecosystems…”
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Use of stored carbon reserves in growth of temperate tree roots and leaf buds: analyses using radiocarbon measurements and modeling by GAUDINSKI, J.B, TORN, M.S, RILEY, W.J, SWANSTON, C, TRUMBORE, S.E, JOSLIN, J.D, MAJDI, H, DAWSON, T.E, HANSON, P.J

“…Characterizing the use of carbon (C) reserves in trees is important for understanding regional and global C cycles, stress responses, asynchrony between…”
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Effects of slash retention and wood ash addition on fine root biomass and production and fungal mycelium in a Norway spruce stand in SW Sweden by Majdi, Hooshang, Truus, Laimi, Johansson, Ulf, Nylund, Jan-Erik, Wallander, Håkan

“…In the study reported here we examined the short-term effects (1–3 years) of slash retention (SR) and the long-term effects (13–15 years) of wood-ash…”
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Variation in fine root biomass of three European tree species: Beech (Fagus sylvatica L.), Norway spruce (Picea abies L. Karst.), and Scots pine (Pinus sylvestris L.) by Finér, L., Helmisaari, H.-S., Lõhmus, K., Majdi, H., Brunner, I., Børja, I., Eldhuset, T., Godbold, D., Grebenc, T., Konôpka, B., Kraigher, H., Möttönen, M.-R., Ohashi, M., Oleksyn, J., Ostonen, I., Uri, V., Vanguelova, E.

“…Fine roots (<2 mm) are very dynamic and play a key role in forest ecosystem carbon and nutrient cycling and accumulation. We reviewed root biomass data of…”
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Estimating root longevity at sites with long periods of low root mortality by Andersson, P, Majdi, H

“…Minirhizotron technique is capable of providing median root longevity. The use of the median longevity might overestimate root longevity if the distribution of…”
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