scholarly journals Global variability in leaf respiration in relation to climate, plant functional types and leaf traits

2015 ◽  
Vol 206 (2) ◽  
pp. 614-636 ◽  
Author(s):  
Owen K. Atkin ◽  
Keith J. Bloomfield ◽  
Peter B. Reich ◽  
Mark G. Tjoelker ◽  
Gregory P. Asner ◽  
...  
Keyword(s):  
Leaf Traits ◽  
Plant Functional Types ◽  
Leaf Respiration ◽  
Functional Types

scholarly journals Leaf traits drive differences in biomass partitioning among major plant functional types

2015 ◽  
Author(s):  
Remko A Duursma ◽  
Daniel S Falster
Keyword(s):  
Global Climate ◽  
Empirical Studies ◽  
Leaf Traits ◽  
Biomass Partitioning ◽  
Plant Functional Types ◽  
Leaf Mass Per Area ◽  
Leaf Mass ◽  
Functional Types ◽  
Vegetation Models ◽  
Climate Space

1. The partitioning of biomass into leaves and stems is one of the most uncertain and influential components of global vegetation models (GVMs). Although GVMs typically assume that the major woody plant functional types (PFTs) differ in biomass partitioning, empirical studies have not been able to justify these differences. Here we test for differences between PFTs in partitioning of biomass between leaves and stems. 2. We use the recently published Biomass And Allometry Database (BAAD), a large database including observations for individual plants. The database covers the global climate space, allowing us to test for direct climate effects in addition to PFT. 3. The leaf mass fraction (LMF, leaf / total aboveground biomass) varied strongly between PFTs (as defined by deciduous vs. evergreen and gymnosperm vs. angiosperm). We found that LMF, once corrected for plant height, was proportional to leaf mass per area across PFTs. As a result, the PFTs did not differ in the amount of leaf area supported per unit above ground biomass. We found only weak and inconsistent effects of climate on biomass partitioning. 4. Combined, these results uncover fundamental rules in how plants are constructed and allow for systematic benchmarking of biomass partitioning routines in GVMs.

scholarly journals Does the leaf economic spectrum hold within plant functional types? A Bayesian multivariate trait meta-analysis

2018 ◽  
Author(s):  
Alexey N. Shiklomanov ◽  
Elizabeth M. Cowdery ◽  
Michael Bahn ◽  
Chaeho Byun ◽  
Steven Jansen ◽  
...  
Keyword(s):  
Meta Analysis ◽  
Leaf Traits ◽  
Plant Functional Types ◽  
Ancillary Data ◽  
Data Accessibility ◽  
Economic Relationships ◽  
Link Type ◽  
Functional Types ◽  
Leaf Economic Spectrum ◽  
Data Request

AbstractWe investigated whether global leaf economic relationships are also present within plant functional types (PFTs), and the extent to which this hierarchical structure can be used to constrain trait estimates. We developed a hierarchical multivariate Bayesian model that assumes separate means and covariance structures within and across PFTs and fit this model to seven leaf traits from the TRY database related to leaf morphology, biochemistry, and photosynthetic metabolism. Trait correlations were generally consistent in direction within and across PFTs, and consistent with predictions of the leaf economic spectrum. However, correlation strength varied substantially across PFTs indicating that leaf economic relationships within PFTs are often confounded by the unique physiology of certain plant types or environmental conditions in certain biomes. Leveraging covariance in multivariate models reduced uncertainties in mean trait estimates, particularly for undersampled trait-PFT combinations. However, additional constraint from the across-PFT hierarchy was limited.Data accessibilityThe R code and ancillary data for running these analyses is publicly available online via the Open Science Framework at https://osf.io/w8y73/. The TRY data request used for this analysis has been archived at http://try-db.org, and can be retrieved by providing the TRY data request ID (#1584). Alternatively, the exact preformatted data used in this analysis are available on request to Alexey Shiklomanov ([email protected]).

scholarly journals Convergence in the temperature response of leaf respiration across biomes and plant functional types

2016 ◽  
Vol 113 (14) ◽  
pp. 3832-3837 ◽  
Author(s):  
Mary A. Heskel ◽  
Odhran S. O’Sullivan ◽  
Peter B. Reich ◽  
Mark G. Tjoelker ◽  
Lasantha K. Weerasinghe ◽  
...  
Keyword(s):  
Temperature Sensitivity ◽  
Land Surface ◽  
Response Curve ◽  
Fossil Fuels ◽  
Temperature Response ◽  
Plant Functional Types ◽  
Leaf Respiration ◽  
Functional Types ◽  
Carbon Release ◽  
Plant Respiration

Plant respiration constitutes a massive carbon flux to the atmosphere, and a major control on the evolution of the global carbon cycle. It therefore has the potential to modulate levels of climate change due to the human burning of fossil fuels. Neither current physiological nor terrestrial biosphere models adequately describe its short-term temperature response, and even minor differences in the shape of the response curve can significantly impact estimates of ecosystem carbon release and/or storage. Given this, it is critical to establish whether there are predictable patterns in the shape of the respiration–temperature response curve, and thus in the intrinsic temperature sensitivity of respiration across the globe. Analyzing measurements in a comprehensive database for 231 species spanning 7 biomes, we demonstrate that temperature-dependent increases in leaf respiration do not follow a commonly used exponential function. Instead, we find a decelerating function as leaves warm, reflecting a declining sensitivity to higher temperatures that is remarkably uniform across all biomes and plant functional types. Such convergence in the temperature sensitivity of leaf respiration suggests that there are universally applicable controls on the temperature response of plant energy metabolism, such that a single new function can predict the temperature dependence of leaf respiration for global vegetation. This simple function enables straightforward description of plant respiration in the land-surface components of coupled earth system models. Our cross-biome analyses shows significant implications for such fluxes in cold climates, generally projecting lower values compared with previous estimates.

Author response for "Oligocene vegetation of Europe and western Asia-Diversity change and continental patterns reflected by plant functional types"

2020 ◽  
Author(s):  
Utescher, Torsten ◽  
Erdei, Boglarka ◽  
Francois, Louis ◽  
Henrot, Alexandra-Jane ◽  
Mosbrugger, Volker ◽  
...  
Keyword(s):  
Plant Functional Types ◽  
Author Response ◽  
Functional Types ◽  
Western Asia

Spatial Distribution of Roots across Three Dryland Ecosystems and Plant Functional Types

2019 ◽  
Vol 79 (2) ◽  
pp. 159 ◽  
Author(s):  
Jessica G. Swindon ◽  
William K. Lauenroth ◽  
Daniel R. Schlaepfer ◽  
Ingrid C. Burke
Keyword(s):  
Spatial Distribution ◽  
Plant Functional Types ◽  
Functional Types ◽  
Dryland Ecosystems ◽  
Distribution Of Roots
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