Search results for: Joseph A. Berry

Items from 1 to 20 out of 38 results

article

Leaf relative uptake of carbonyl sulfide to CO₂ seen through the lens of stomatal conductance–photosynthesis coupling

Wu Sun, Joseph A. Berry, Dan Yakir, Ulli Seibt

Carbonyl sulfide (COS) has emerged as a multi‐scale tracer for terrestrial photosynthesis. To infer ecosystem‐scale photosynthesis from COS fluxes often requires knowledge of leaf relative uptake (LRU), the concentration‐normalized ratio between leaf COS uptake and photosynthesis. However, current mechanistic understanding of LRU variability remains inadequate for deriving robust COS‐based estimates...

article

Representing plant diversity in land models: An evolutionary approach to make “Functional Types” more functional

Leander D. L. Anderegg, Daniel M. Griffith, Jeannine Cavender‐Bares, William J. Riley, more

Global Change Biology > 28 > 8 > 2541 - 2554

Plants are critical mediators of terrestrial mass and energy fluxes, and their structural and functional traits have profound impacts on local and global climate, biogeochemistry, biodiversity, and hydrology. Yet, Earth System Models (ESMs), our most powerful tools for predicting the effects of humans on the coupled biosphere–atmosphere system, simplify the incredible diversity of land plants into...

article

Quantifying high‐temperature stress on soybean canopy photosynthesis: The unique role of sun‐induced chlorophyll fluorescence

Hyungsuk Kimm, Kaiyu Guan, Charles H. Burroughs, Bin Peng, more

Global Change Biology > 27 > 11 > 2403 - 2415

High temperature and accompanying high vapor pressure deficit often stress plants without causing distinctive changes in plant canopy structure and consequential spectral signatures. Sun‐induced chlorophyll fluorescence (SIF), because of its mechanistic link with photosynthesis, may better detect such stress than remote sensing techniques relying on spectral reflectance signatures of canopy structural...

article

Potential of hotspot solar‐induced chlorophyll fluorescence for better tracking terrestrial photosynthesis

Dalei Hao, Ghassem R. Asrar, Yelu Zeng, Xi Yang, more

Global Change Biology > 27 > 10 > 2144 - 2158

Remote sensing of solar‐induced fluorescence (SIF) opens a new window for quantifying a key ecological variable, the terrestrial ecosystem gross primary production (GPP), because of the revealed strong SIF–GPP correlation. However, similar to many other remotely sensed metrics, SIF observations suffer from the sun‐sensor geometry effects, which may have important impacts on the SIF–GPP relationship...

article

Terrestrial gross primary production: Using NIR_V to scale from site to globe

Grayson Badgley, Leander D. L. Anderegg, Joseph A. Berry, Christopher B. Field

Global Change Biology > 25 > 11 > 3731 - 3740

Terrestrial photosynthesis is the largest and one of the most uncertain fluxes in the global carbon cycle. We find that near‐infrared reflectance of vegetation (NIR_V), a remotely sensed measure of canopy structure, accurately predicts photosynthesis at FLUXNET validation sites at monthly to annual timescales (R² = 0.68), without the need for difficult to acquire information about environmental factors...

article

What is global photosynthesis? History, uncertainties and opportunities

Youngryel Ryu, Joseph A. Berry, Dennis D. Baldocchi

Remote Sensing of Environment > 2019 > 223 > C > 95-114

Quantifying global terrestrial photosynthesis is essential to understanding the global carbon cycle and the climate system. Remote sensing has played a pivotal role in advancing our understanding of photosynthesis from leaf to global scale; however, substantial uncertainties still exist. In this review, we provide a historical overview of theory, modeling, and observations of photosynthesis across...

article

Comparing optimal and empirical stomatal conductance models for application in Earth system models

Peter J. Franks, Gordon B. Bonan, Joseph A. Berry, Danica L. Lombardozzi, more

Global Change Biology > 24 > 12 > 5708 - 5723

Earth system models (ESMs) rely on the calculation of canopy conductance in land surface models (LSMs) to quantify the partitioning of land surface energy, water, and CO₂ fluxes. This is achieved by scaling stomatal conductance, g_w, determined from physiological models developed for leaves. Traditionally, models for g_w have been semi‐empirical, combining physiological functions with empirically determined...

article

Sun-induced chlorophyll fluorescence is more strongly related to absorbed light than to photosynthesis at half-hourly resolution in a rice paddy

Kaige Yang, Youngryel Ryu, Benjamin Dechant, Joseph A. Berry, more

Remote Sensing of Environment > 2018 > 216 > C > 658-673

Sun-induced chlorophyll fluorescence (SiF) is increasingly used as a proxy for vegetation canopy photosynthesis. While ground-based, airborne, and satellite observations have demonstrated a strong linear relationship between SiF and gross primary production (GPP) at seasonal scales, their relationships at high temporal resolution across diurnal to seasonal scales remain unclear. In this study, far-red...

article

Disruption of stomatal lineage signaling or transcriptional regulators has differential effects on mesophyll development, but maintains coordination of gas exchange

Graham J. Dow, Joseph A. Berry, Dominique C. Bergmann

New Phytologist > 216 > 1 > 69 - 75

Stomata are simultaneously tasked with permitting the uptake of carbon dioxide for photosynthesis while limiting water loss from the plant. This process is mainly regulated by guard cell control of the stomatal aperture, but recent advancements have highlighted the importance of several genes that control stomatal development. Using targeted genetic manipulations of the stomatal lineage and a...

article

Application of satellite solar-induced chlorophyll fluorescence to understanding large-scale variations in vegetation phenology and function over northern high latitude forests

Su-Jong Jeong, David Schimel, Christian Frankenberg, Darren T. Drewry, more

Remote Sensing of Environment > 2017 > 190 > C > 178-187

This study evaluates the large-scale seasonal phenology and physiology of vegetation over northern high latitude forests (40°–55°N) during spring and fall by using remote sensing of solar-induced chlorophyll fluorescence (SIF), normalized difference vegetation index (NDVI) and observation-based estimate of gross primary productivity (GPP) from 2009 to 2011. Based on GPP phenology estimation in GPP,...

article

Model-based analysis of the relationship between sun-induced chlorophyll fluorescence and gross primary production for remote sensing applications

Yongguang Zhang, Luis Guanter, Joseph A. Berry, Christiaan van der Tol, more

Remote Sensing of Environment > 2016 > 187 > C > 145-155

Remote sensing of sun-induced chlorophyll fluorescence (SIF) is a novel optical tool for the assessment of terrestrial photosynthesis or gross primary production (GPP). Several recent studies have demonstrated the strong link between GPP and space-borne retrievals of SIF at broad scales. However, critical gaps remain between short-term small-scale mechanistic understanding and seasonal global observations...

article

Photosynthesis: ancient, essential, complex, diverse … and in need of improvement in a changing world

Ülo Niinemets, Joseph A. Berry, Susanne Caemmerer, Donald R. Ort, more

New Phytologist > 213 > 1 > 43 - 47

chapter

Can we retrieve vegetation photosynthetic capacity paramter from solar-induced fluorescence?

Yongguang Zhang, Luis Guanter, Joseph A. Berry, Christiaan van der Tol, more

2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS) > 1711 - 1713

IGARSS 2016 - 2016 IEEE International Geoscience and Remote Sensing Symposium

Remote sensing of sun-induced chlorophyll fluorescence (SIF) is a novel optical tool for assessment of terrestrial photosynthesis or gross primary production (GPP). Along with the breakthroughs of global retrievals of SIF from space-borne sensors, exploitation of SIF in improving the representation of photosynthesis and its role in Earth System models became a very relevant and active field. Recent...

article

Improving the monitoring of crop productivity using spaceborne solar‐induced fluorescence

Kaiyu Guan, Joseph A. Berry, Yongguang Zhang, Joanna Joiner, more

Global Change Biology > 22 > 2 > 716 - 726

Large‐scale monitoring of crop growth and yield has important value for forecasting food production and prices and ensuring regional food security. A newly emerging satellite retrieval, solar‐induced fluorescence (SIF) of chlorophyll, provides for the first time a direct measurement related to plant photosynthetic activity (i.e. electron transport rate). Here, we provide a framework to link SIF retrievals...

article

Simulations of chlorophyll fluorescence incorporated into the Community Land Model version 4

Jung‐Eun Lee, Joseph A. Berry, Christiaan Tol, Xi Yang, more

Global Change Biology > 21 > 9 > 3469 - 3477

Several studies have shown that satellite retrievals of solar‐induced chlorophyll fluorescence (SIF) provide useful information on terrestrial photosynthesis or gross primary production (GPP). Here, we have incorporated equations coupling SIF to photosynthesis in a land surface model, the National Center for Atmospheric Research Community Land Model version 4 (NCAR CLM4), and have demonstrated its...

article

Estimation of vegetation photosynthetic capacity from space‐based measurements of chlorophyll fluorescence for terrestrial biosphere models

Yongguang Zhang, Luis Guanter, Joseph A. Berry, Joanna Joiner, more

Global Change Biology > 20 > 12 > 3727 - 3742

Photosynthesis simulations by terrestrial biosphere models are usually based on the Farquhar's model, in which the maximum rate of carboxylation (V_cmax) is a key control parameter of photosynthetic capacity. Even though V_cmax is known to vary substantially in space and time in response to environmental controls, it is typically parameterized in models with tabulated values associated to plant functional...

article

An integrated model of stomatal development and leaf physiology

Graham J. Dow, Dominique C. Bergmann, Joseph A. Berry

New Phytologist > 201 > 4 > 1218 - 1226

Stomatal conductance (g_s) is constrained by the size and number of stomata on the plant epidermis, and the potential maximum rate of g_s can be calculated based on these stomatal traits (Anatomical g_smax). However, the relationship between Anatomical g_smax and operational g_s under atmospheric conditions remains undefined.Leaf‐level gas‐exchange measurements were performed for six Arabidopsis thaliana...

article

The physiological importance of developmental mechanisms that enforce proper stomatal spacing in Arabidopsis thaliana

Graham J. Dow, Joseph A. Berry, Dominique C. Bergmann

New Phytologist > 201 > 4 > 1205 - 1217

Genetic and cell biological mechanisms that regulate stomatal development are necessary to generate an appropriate number of stomata and enforce a minimum spacing of one epidermal cell between stomata. The ability to manipulate these processes in a model plant system allows us to investigate the physiological importance of stomatal patterning and changes in density, therein testing underlying theories...

article

Loss of whole-tree hydraulic conductance during severe drought and multi-year forest die-off

William R. L. Anderegg, Leander D. L. Anderegg, Joseph A. Berry, Christopher B. Field

Oecologia > 2014 > 175 > 1 > 11-23

Understanding the pathways through which drought stress kills woody vegetation can improve projections of the impacts of climate change on ecosystems and carbon-cycle feedbacks. Continuous in situ measurements of whole trees during drought and as trees die hold promise to illuminate physiological pathways but are relatively rare. We monitored leaf characteristics, water use efficiency, water potentials,...

article

The influence of leaf‐atmosphere NH_3(g₎ exchange on the isotopic composition of nitrogen in plants and the atmosphere

JENNIFER E. JOHNSON, JOSEPH A. BERRY

Plant, Cell & Environment > 36 > 10 > 1783 - 1801

The distribution of nitrogen isotopes in the biosphere has the potential to offer insights into the past, present and future of the nitrogen cycle, but it is challenging to unravel the processes controlling patterns of mixing and fractionation. We present a mathematical model describing a previously overlooked process: nitrogen isotope fractionation during leaf‐atmosphere NH_3(g₎ exchange. The model...

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INFONA - science communication portal

Search results for: Joseph A. Berry

Leaf relative uptake of carbonyl sulfide to CO₂ seen through the lens of stomatal conductance–photosynthesis coupling

Representing plant diversity in land models: An evolutionary approach to make “Functional Types” more functional

Quantifying high‐temperature stress on soybean canopy photosynthesis: The unique role of sun‐induced chlorophyll fluorescence

Potential of hotspot solar‐induced chlorophyll fluorescence for better tracking terrestrial photosynthesis

Terrestrial gross primary production: Using NIR_V to scale from site to globe

What is global photosynthesis? History, uncertainties and opportunities

Comparing optimal and empirical stomatal conductance models for application in Earth system models

Sun-induced chlorophyll fluorescence is more strongly related to absorbed light than to photosynthesis at half-hourly resolution in a rice paddy

Disruption of stomatal lineage signaling or transcriptional regulators has differential effects on mesophyll development, but maintains coordination of gas exchange

Application of satellite solar-induced chlorophyll fluorescence to understanding large-scale variations in vegetation phenology and function over northern high latitude forests

Model-based analysis of the relationship between sun-induced chlorophyll fluorescence and gross primary production for remote sensing applications

Photosynthesis: ancient, essential, complex, diverse … and in need of improvement in a changing world

Can we retrieve vegetation photosynthetic capacity paramter from solar-induced fluorescence?

Improving the monitoring of crop productivity using spaceborne solar‐induced fluorescence

Simulations of chlorophyll fluorescence incorporated into the Community Land Model version 4

Estimation of vegetation photosynthetic capacity from space‐based measurements of chlorophyll fluorescence for terrestrial biosphere models

An integrated model of stomatal development and leaf physiology

The physiological importance of developmental mechanisms that enforce proper stomatal spacing in Arabidopsis thaliana

Loss of whole-tree hydraulic conductance during severe drought and multi-year forest die-off

The influence of leaf‐atmosphere NH_3(g₎ exchange on the isotopic composition of nitrogen in plants and the atmosphere

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