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Chantal D. Reid
Assistant Professor of the Practice Emerita in the Division of Environmental Natural Sciences
Journal ArticleThe New phytologist · May 2026
To survive climate change, forest trees will have to shift seed production poleward. However, warming will not stimulate tree fecundity in the north if it is limited by other habitat variables. We evaluated the responses of tree fecundity to climate change ...
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Journal ArticleGlobal change biology · February 2026
In 2023, more than half of olive harvests (Olea europaea) across Spain, Greece, and Türkiye were lost to drought. The same year late freeze destroyed 90% of the peach crop (Prunus persica) on the Georgia Piedmont and the apple crop (Malus domestica) in cen ...
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Journal ArticleEcology letters · September 2024
The fundamental trade-off between current and future reproduction has long been considered to result in a tendency for species that can grow large to begin reproduction at a larger size. Due to the prolonged time required to reach maturity, estimates of tr ...
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Journal ArticleJournal of Agriculture Food Systems and Community Development · September 1, 2023
Agriculture models predicated upon producing monocultures for export have proven unsustainable. In response, the Food and Agriculture Organization of the United Nations (FAO) has called for nations to produce food agroecologically in alignment with natural ...
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Journal ArticleNature plants · July 2023
The benefits of masting (volatile, quasi-synchronous seed production at lagged intervals) include satiation of seed predators, but these benefits come with a cost to mutualist pollen and seed dispersers. If the evolution of masting represents a balance bet ...
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Journal ArticleGlobal Ecology and Biogeography · May 1, 2023
Aim: Our understanding of the mechanisms that maintain forest diversity under changing climate can benefit from knowledge about traits that are closely linked to fitness. We tested whether the link between traits and seed number and seed size is consistent ...
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Journal ArticleEcology letters · June 2022
Lack of tree fecundity data across climatic gradients precludes the analysis of how seed supply contributes to global variation in forest regeneration and biotic interactions responsible for biodiversity. A global synthesis of raw seedproduction data shows ...
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Journal ArticleNature communications · May 2022
The relationships that control seed production in trees are fundamental to understanding the evolution of forest species and their capacity to recover from increasing losses to drought, fire, and harvest. A synthesis of fecundity data from 714 species worl ...
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Journal ArticleProceedings of the National Academy of Sciences of the United States of America · January 2022
Tree fecundity and recruitment have not yet been quantified at scales needed to anticipate biogeographic shifts in response to climate change. By separating their responses, this study shows coherence across species and communities, offering the strongest ...
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Journal ArticleProceedings of the National Academy of Sciences of the United States of America · August 2021
Despite its importance for forest regeneration, food webs, and human economies, changes in tree fecundity with tree size and age remain largely unknown. The allometric increase with tree diameter assumed in ecological models would substantially overestimat ...
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Journal ArticleNature communications · February 2021
Indirect climate effects on tree fecundity that come through variation in size and growth (climate-condition interactions) are not currently part of models used to predict future forests. Trends in species abundances predicted from meta-analyses and specie ...
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Journal ArticleEnvironmental Research Letters · November 1, 2018
Further expansion of agriculture in the tropics is likely to accelerate the loss of biodiversity. One crop of concern to conservation is African oil palm (Elaeis guineensis). We examined recent deforestation associated with oil palm in the Peruvian Amazon ...
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Journal ArticleMycologia · January 2017
Among fungi isolated from healthy root mycobiomes of Populus, we discovered a new endorrhizal fungal species belonging to the rust lineage Pucciniomycotina, described here as Atractiella rhizophila. We characterized this species by transmission electron mi ...
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Journal ArticleNuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment · January 1, 2013
The ability to detect the emissions of radioactive isotopes through radioactive decay (e.g. beta particles, x-rays and gamma-rays) has been used for over 80 years as a tracer method for studying natural phenomena. More recently a positron emitting radioiso ...
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Journal ArticleIEEE Nuclear Science Symposium Conference Record · January 1, 2013
In plant ecophysiology research there is interest in studying the biology of the rhizosphere because of its importance in plant nutrient-interactions. The rhizosphere is the zone of soil surrounding a plant's root system where microbes (such as fungi) are ...
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Journal ArticleIEEE Nuclear Science Symposium Conference Record · January 1, 2013
PhytoPET is a modular positron emission tomography (PET) system designed specifically for plant imaging. The PhytoPET design allows flexible arrangements of PET detectors based on individual standalone detector modules built from single Hamamatsu H8500 pos ...
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Journal ArticleIEEE Nuclear Science Symposium Conference Record · December 1, 2012
We have developed a flash analog to digital (ADC) based read out system to be used for a Positron Emission Tomography (PET) system. The custom designed 16 channel 12-bit Ethernet-based flash ADC (EFADC-16) unit operates at 250 MHz/s/channel utilizing a gig ...
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Journal ArticleIEEE Nuclear Science Symposium Conference Record · December 1, 2012
We have developed a positron emission tomography (PET) system designed specifically for plant imaging in Phytotron at Duke University. Initial evaluation of a PhytoPET system to image the biodistribution of the positron emitting tracer 11C in live plants i ...
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Journal ArticleIEEE Nuclear Science Symposium Conference Record · January 1, 2011
The development and initial evaluation of a high-resolution positron emission tomography (PET) system to image the biodistribution of positron emitting tracers in live plants is underway. The positron emitting 11CO2 tracer is used in ...
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Journal ArticleIEEE Nuclear Science Symposium Conference Record · December 1, 2010
The 11 CO2 tracer is used to facilitate plant biology research towards optimization of plant productivity, biofuel development and carbon sequestration in biomass. Positron emission tomography (PET) imaging has been used to study carb ...
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Journal ArticleIEEE Nuclear Science Symposium Conference Record · December 1, 2009
There are opportunities for the development of new tools to advance plant biology research through the use of radionuclides. Thomas Jefferson National Accelerator Facility, Duke University, West Virginia University and the University of Maryland are collab ...
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Journal ArticleHFSP journal · August 2008
Short-lived positron-emitting radiotracer techniques provide time-dependent data that are critical for developing models of metabolite transport and resource distribution in plants and their microenvironments. Until recently these techniques were applied t ...
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Journal ArticleGlobal Change Biology · January 1, 2008
Tropospheric O3 reduces growth and yield of many crop species, whereas CO2 ameliorates the negative effects of O3. Thus, in a combined elevated CO2 and O3 atmosphere, seed yield is at least restored to ...
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Journal ArticleThe New phytologist · January 2007
The model of Farquhar, von Caemmerer and Berry is the standard in relating photosynthetic carbon assimilation and concentration of intercellular CO(2). The techniques used in collecting the data from which its parameters are estimated have been the object ...
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Journal ArticleGlobal Change Biology · October 1, 2005
Atmospheric CO2 concentrations are predicted to double within the next century. Despite this trend, the extent and mechanisms through which elevated CO2 affects plant diseases remain uncertain. In this study, we assessed how elevated ...
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Journal ArticleGeophysical Research Letters · 2003
Leaf stomatal characters influence the response of terrestrial evapotranspiration to climate change and are used as proxies for the reconstruction of past atmospheric [CO2]. We examined the phenotypic response of stomatal index (SI), density (SD) and apert ...
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Journal ArticlePlant Cell and Environment · April 20, 2002
An investigation to determine whether stomatal acclimation to [CO2] occurred in C3/C4 grassland plants grown across a range of [CO2] (200-550 μmol mol-1) in the field was carried out. Acclimation was a ...
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Journal ArticleTechnology · January 1, 2002
Numerous studies indicate that increasing atmospheric CO2 concentrations might enhance the productivity of current cropping systems. However, it appears that this productivity benefit may, in some cases, be the result of amelioration of the effe ...
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Journal ArticlePhysiologia Plantarum · August 1, 1999
Ribulose-1,5-bisphosphate (RuBP) pool size was determined at regular intervals during the growing season to understand the effects of tropospheric ozone concentrations, elevated atmospheric carbon dioxide concentrations and their interactions on the photos ...
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Journal ArticleJournal of Experimental Botany · January 1, 1998
Content and activity of Rubisco and concentrations of leaf nitrogen, chlorophyll and total non-structural carbohydrates (TNC) were determined at regular intervals during the 1993 and 1994 growing seasons to understand the effects and interactions of [O
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Journal ArticleJournal of Experimental Botany · January 1, 1998
Soybean (Glycine max) was grown in open-top field chambers at ambient (360 μmol mol-1) or doubled [CO2] either in charcoal-filtered air (20 nmol mol-1 [O3]) or in non-filtered air supplemented to 1.5x ambient [O< ...
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Journal ArticleJournal of Experimental Botany · January 1, 1997
Soybeans were grown for three seasons in open-top field chambers to determine (1) whether elevated CO2 (360 versus 700 μmol mol-1) alleviates some of the yield loss due to pollutant O3, (2) whether the partial stomatal clos ...
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Journal ArticleJournal of Experimental Botany · January 1, 1997
The effects of elevated carbon dioxide (CO2) and ozone (O3) on soybean [Glycine max (L.) Merr.] photosynthesis and photorespiration-related parameters were determined periodically during the growing season by measurements of gas excha ...
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Journal ArticleJournal of Experimental Botany · 1997
Soybeans were grown for three seasons in open-top field chambers to determine (1) whether elevated CO2 (360 versus 700 μmol mol-1) alleviates some of the yield loss due to pollutant O3, (2) whether the partial stomatal closure resulting from chronic O3 exp ...
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Journal ArticlePhysiologia Plantarum · January 1, 1997
Radioisotopic and spectrophotometric assays for ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) initial and final activities and Rubisco content were compared in plants chronically exposed to ozone (O3) in a greenhouse and the field. I ...
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Journal ArticleOecologia · June 1994
Carbon exchange rates (CER) and whole-plant carbon balances of beech (Fagus grandifolia) and sugar maple (Acer saccharum) were compared for seedlings grown under low irradiance to determine the effects of atmospheric CO2 enrichment on shade-tole ...
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Journal ArticlePlanta · August 1, 1993
The light-dependent modulation of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) activity was studied in two species: Phaseolus vulgaris L., which has high levels of the inhibitor of Rubisco activity, carboxyarabinitol 1-phosphate (CA1P), in the ...
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Journal ArticlePlant Cell Environment · January 1, 1993
Elevated atmospheric carbon dioxide partial pressures have been shown to have variable direct and indirect effects on plant respiration rates. In this study, growth, leaf respiration, and leaf nitrogen and carbohydrate partitioning were measured in Gossypi ...
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Journal ArticleBulletin De La Societe Botanique De France Actualites Botaniques · January 1, 1984
Photosynthetic rates were measured in Ceanothusgreggii Gray and Adenostoma fasciculatum H and A to determine change in productivity along a fire- induced age gradient in southern California. In general C. greggii had higher rates of CO2 uptake than did A. ...
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