Root lifespan turnover and efficiency
WebFeb 7, 2013 · Estimates of fine root lifespan and turnover are based on empirical observations and relationships with fine root and whole-plant traits and apply explicitly to the fine root pool that is relatively short-lived and most active in nutrient and water uptake. Results from the combined model identified patterns of faster root turnover rates in the ... WebRoot order also is important to root life-span, because variation in diameters among roots within the same order is large and diameters varied from <0.2 mm, to 0.2-0.5 mm and to >0.5 mm even in the first-order roots. Differences in the life-span between root diameter and root order affect estimates of root turnover. Therefore, based on this ...
Root lifespan turnover and efficiency
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WebThe study of root population dynamics is of interest to many disciplines, including crop science, physiology, ecology, and soil science. For example, a better understanding of root … WebAug 15, 2008 · The fine root production in spring and summer accounted for 41.7% and 39.7% of the total annual production in F. mandshurica and 24.0% and 51.2% in L. gmelinii. The majority of fine root mortality occurred in spring and summer for F. mandshurica and in summer and autumn for L. gmelinii.
WebJun 11, 2012 · Introduction. Fine roots play a key role in soil nutrient, water, and carbon (C) cycling. Globally, up to one-third of terrestrial net primary productivity is allocated to fine roots (Jackson et al., 1997) and fine root lifespan specifically controls a dominant flux of C from plants into soils through the turnover of root tissue.Fine root lifespan also exerts an … WebFeb 7, 2013 · Estimates of fine root lifespan and turnover are based on empirical observations and relationships with fine root and whole-plant traits and apply explicitly to …
WebAug 1, 2006 · A better understanding of root lifespan will be valuable to those attempting to model ecosystem carbon cycles because of the important link root turnover has in this … WebSep 1, 2013 · Assuming resource optimization, we hypothesized that root lifespan should maximize the lifetime root efficiency or the lifetime benefits relative to the lifetime costs (Yanai et al. 1995). Therefore, roots growing in the N-rich patches that do not become depleted should be longer lived, because they presumably are supplying more of the …
WebMar 1, 1997 · According to the cost-benefit assumption (Eissenstat and Yanai, 1997), warming will shorten the fine root lifespan by increasing metabolic activity, such as root respiration (Burton et al.,...
WebAug 1, 2006 · A better understanding of root lifespan will be valuable to those attempting to model ecosystem carbon cycles because of the important link root turnover has in this process. Many of the trees proposed to be examined in this study are forest dominants in much of eastern hardwood forests. hawthorn 2023 calendarWebsynthesize root turnover data for major biomes and plant life forms globally, (2) to generate broadscale patterns of root turnover along climatic gradients, and (3) to contrast regional and local environmental controls over root turnover. We illustrate this last objective by using regional patterns to predict site-level responses to global change. botany life medicalWebDownload scientific diagram Conceptual models indicating predicted responses of fine root lifespan to increased temperature (top panel) and increased temperature variability (bottom panel). hawthorn 3 lettersWebBouma TJ, Hengst K, Koustaal BP, van Soelen J (2002) Estimating root lifespan of two grasses at contrasting elevation in a salt marsh by applying vitality staining on roots from … hawthorn 300mgWebMar 29, 2002 · Differences in fine root life span between four AM and four ECM tree species using mini‐rhizotrons in a factorial drought experiment in large mesocosms indicate … botany literary definitionWebthrough root turnover. 2. In a garden experiment, root life spans and root diameters were measured by repeated ... nutrient conservation and nutrient-use efficiency. These traits make species successful competitors in nutrient-? 2002 British ... Many earlier studies on root life span of grass spe-cies were based on core sampling and total root ... botany listWebMar 29, 2002 · The mechanism behind the shorter root lifespan in a warmer environment has been suggested to be based on enhanced metabolism (respiration) which accelerates … botany levequests ff14