Belowground Processes and Global Change

Jackson, Robert B.

doi:10.2307/2641101

Cited by 6 publications

(3 citation statements)

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“…Much studies of drylands studies have water pulses as drivers of major ecological functions (Huxman et al 2004;Noy-Meir 1973;Ogle and Reynolds 2004), but the water-centered approach neglects many important processes and interactions in which nutrients play a more important role (Austin et al 2004). Drylands contribute about a third of the net productivity of terrestrial ecosystems (Asner et al 2004;Field et al 1995), play an important role in the sequestration and storage of carbon (C) globally (Jackson 2000;Lal 2004;Ma et al 2014) and have a noticeable impact on the seasonality of the global C cycle (Poulter et al 2014), and nutrients are key drivers in all these ecosystem functioning processes. As such, a major concern now is that changes in nutrient cycles linked to current global trends of increasing dryness will have unknown consequences to productivity in arid ecosystems (Delgado-Baquerizo et al 2017;Yuan and Chen 2015).…”

Section: Introductionmentioning

confidence: 99%

Foliar C, N, and P stoichiometry characterize successful plant ecological strategies in the Sonoran Desert

et al. 2018

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Ecological processes are centered to water availability in drylands, however less known nutrient stoichiometry can help explain much of their structure and ecological interactions. Here we look to the foliar stoichiometry of carbon (C), nitrogen (N) and phosphorus (P) of 38 dominant plant species from the Sonoran Desert, grouped in four different functional types to describe ecological characteristics and processes. We found that foliar N, C:N, C:P and N:P stoichiometric ratios, but not P, were higher than those known to most other ecosystems and indicate P but not N limitations in leaves. Biological N fixers (BNF) had even higher leaf N concentrations, but bio-elemental concentrations and stoichiometry ratios were not different to other non-N fixing legume species which underscores the need to understand the physiological mechanisms for high N, and to how costly BNF can succeed in P-limiting drylands environments. Stoichiometry ratios, and to lesser extent elemental concentrations, were able to characterize BNF and colonizing strategies in the Sonoran Desert, as well as explain leaf attribute differences, ecological processes and biogeochemical niches in this dryland ecosystem, even when no direct reference is made to other water-limitation strategies.

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Section: Introductionmentioning

confidence: 99%

Foliar C, N, and P stoichiometry characterize successful plant ecological strategies in the Sonoran Desert

et al. 2018

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“…Curtis et al, 2002 for Central Indiana, USA). Soil carbon gains in afforested lands are predicted to be very high and CO 2 losses due to decomposition and/or mineralization are not predicted to increase at a rate comparable to its influx into soils (Jackson, 2000;Tan, 2000;Lal et al, 2003).…”

Section: Discussionmentioning

confidence: 98%

Land use model for carbon conservation across a midwestern USA landscape

Wang

Medley

2004

Landscape and Urban Planning

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“…However, studies of root biomass continue to lag behind those of aboveground components (Jackson 2000;Sloan et al 2013), because root systems are difficult to directly observe or measure unlike aboveground organs (Finer et al 2011;Xiang et al 2013). Measurement of root biomass is very simple to describe as excavation, but the method is labor-intensive and time-consuming.…”

Section: Introductionmentioning

confidence: 99%

Individual-based fine root biomass and its functional relationship with leaf for Pinus tabuliformis in northern China

Jia

Liu

2015

Eur J Forest Res

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Root biomass plays an essential role in carbon sequestration at both individual and ecosystem scales, yet few feasible methods for measuring root biomass of individual trees have been developed. We sampled 11 trees in a pure 20-year-old Pinus tabuliformis plantation to estimate total root, fine root and leaf biomass of individual trees using the nested regression method. The relationships between fine root biomass and surface area as well as leaf biomass and area were examined across tree sizes. Fine roots of P. tabuliformis were estimated to consume 40 % of the net primary production for turnover, and absorbed a total of 1364 g m -2 year -1 of major nutrients. A significant linear relationship was determined between roots and leaves in terms of both biomass and surface area. The findings added weight to the concept that the functional balance theory is applicable to even-aged mature trees of P. tabuliformis.

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Belowground Processes and Global Change

Cited by 6 publications

References 0 publications

Foliar C, N, and P stoichiometry characterize successful plant ecological strategies in the Sonoran Desert

Foliar C, N, and P stoichiometry characterize successful plant ecological strategies in the Sonoran Desert

Land use model for carbon conservation across a midwestern USA landscape

Individual-based fine root biomass and its functional relationship with leaf for Pinus tabuliformis in northern China

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