Quentin D Read

Quentin D Read
Agricultural Research Service | ARS

PhD

About

40
Publications
11,038
Reads
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926
Citations
Introduction
Quentin is a data scientist at the National Socio-Environmental Synthesis Center (SESYNC, https://www.sesync.org) in Annapolis, Maryland, USA. He is now working on quantifying the environmental and ecological impacts of food waste in the United States, and predicting the effectiveness of different programs that have been proposed to reduce food waste. See quentinread.com for more details.

Publications

Publications (40)
Article
Full-text available
Rapid global change is impacting the diversity of tree species and essential ecosystem functions and services of forests. It is therefore critical to understand and predict how the diversity of tree species is spatially distributed within and among forest biomes. Satellite remote sensing platforms have been used for decades to map forest structure...
Article
The productivity of ecosystems and their capacity to support life depends on access to reactive nitrogen (N). Over the past century, humans have more than doubled the global supply of reactive N through industrial and agricultural activities. However, long-term records demonstrate that N availability is declining in many regions of the world. React...
Article
Significance The food system’s negative impact on biodiversity is increasing over time. Conserving biodiversity requires immediate and widespread action to reduce the biodiversity footprint of food consumption, but biodiversity has historically been neglected in sustainability assessments. We combine high-resolution estimates of the biodiversity fo...
Article
Spring mix is a popular packaged salad that contains lettuce (Lactuca sativa L.) as one of its main ingredients. Plants for baby leaf lettuce (BLL) production are grown at very high densities, which enhances the occurrence of bacterial leaf spot (BLS) caused by Xanthomonas hortorum pv. vitians (Xhv), a disease that can make the crop unmarketable. T...
Article
Highlights Peanut drying wagon internal airflow simulation and visualization. Comparison of computer fluid dynamic (CFD) solutions to measured air speed. Modeling of airflow through masses of in-shell peanuts. Information is lacking about airflow through masses of drying in-shell peanuts in drying wagons because of the difficulties encountered in...
Article
The loss of aboveground plant diversity alters belowground ecosystem function; yet, the mechanisms underpinning this relationship and the degree to which plant community structure and climate mediate the effects of plant species loss remain unclear. Here, we explored how plant species loss through experimental removal shaped belowground function in...
Article
Full-text available
Global declines in biodiversity have the potential to affect ecosystem function, and vice versa, in both terrestrial and aquatic ecological realms. While many studies have considered biodiversity-ecosystem function (BEF) relationships at local scales within single realms, there is a critical need for more studies examining BEF linkages among ecolog...
Article
At least 30% of food is wasted during the journey from farm to processor to retailer to consumer in the United States, accounting for an estimated 20% of the environmental impact of the food system. The food waste problem is well characterized, but solutions are not: there has been little rigorous comparison of the costs and potential benefits of f...
Article
Full-text available
Water scarcity is a pervasive threat to society that is expected to intensify alongside a growing and more affluent population and a changing climate. In this paper, we review the existing literature to assess the potential of lessening water scarcity by reducing food loss and waste. Existing studies reveal the scope of food loss and waste and its...
Article
Full-text available
Abstract The impacts of warming on communities and ecosystems are predicted to be significant in mountain ecosystems because physiological processes, including rates of carbon (C) cycling, are often more temperature‐sensitive in colder environments. Plant biodiversity can also influence C exchange, yet few studies integrate how biotic and abiotic f...
Chapter
Full-text available
Two common approaches to conserving biodiversity are conserving the actors (species) and conserving the stage (habitat). Many management efforts focus on conserving the actors, but a major challenge to this strategy is uncertainty surrounding how species’ geographic ranges might shift in response to global change, including climate and land use cha...
Preprint
Full-text available
The competition for light has long been regarded as a key axis of niche partitioning that promotes forest diversity, but available evidence is contradictory. Despite strong tradeoffs between growth and survival with light, field tests suggest neutral forces govern tree composition across forest gaps and resource use between size classes. Here we in...
Article
We may be able to buffer biodiversity against the effects of ongoing climate change by prioritizing the protection of habitat with diverse physical features (high geodiversity) associated with ecological and evolutionary mechanisms that maintain high biodiversity. Nonetheless, the relationships between biodiversity and habitat vary with spatial and...
Article
Full-text available
Reducing food loss and waste (FLW) is widely recognized as an important lever for lowering the environmental impacts of food systems. The United Nations Sustainable Development Agenda includes a goal to reduce FLW by 50% by 2030. Given differences in resource inputs along the food supply chain (FSC), the environmental benefits of FLW reduction will...
Article
Full-text available
Reducing food loss and waste (FLW) is critical for achieving healthy diets from sustainable food systems. Within the United States, 30% to 50% of food produced is lost or wasted. These losses occur throughout multiple stages of the food supply chain from production to consumption. Reducing FLW prevents the waste of land, water, energy, and other re...
Article
Full-text available
Global change drivers, such as nitrogen (N) deposition and non‐random species extinctions, may shift interactions among aboveground and belowground communities. However, tightly coupled interactions between aboveground and belowground organisms may buffer ecosystems to global change. Here, we test how four years of organic and inorganic N addition...
Article
Full-text available
Issue Geodiversity (i.e., the variation in Earth's abiotic processes and features) has strong effects on biodiversity patterns. However, major gaps remain in our understanding of how relationships between biodiversity and geodiversity vary over space and time. Biodiversity data are globally sparse and concentrated in particular regions. In contrast...
Poster
Full-text available
Research into the relationships among climate, land use, and freshwater insect diversity at different spatial scales in the contiguous United States.
Article
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Climate change is expected to favor exotic plant species over native species, because exotics tend to have wider climatic tolerances and greater phenological plasticity, and also because climate change may intensify enemy release. Here, we examine direct effects of warming (+ 1.8 °C above ambient) on plant abundance and phenology, as well as indire...
Article
Full-text available
Temperature is widely regarded as a major driver of species richness, but the mechanisms are debated. Niche theory suggests temperature may affect richness by filtering traits and species in colder habitats while promoting specialization in warmer ones. However, tests of this theory are rare because niche dimensions are challenging to quantify alon...
Article
Ecologists have often predicted that species' niche breadths should decline towards the Equator. Dan Janzen arrived at this prediction based on climatic constraints, while Robert MacArthur argued that a latitudinal gradient in resource specialization drives the pattern. This idea has some support when it comes to thermal niches, but has rarely been...
Article
Full-text available
Our ability to understand and predict the response of ecosystems to a changing environment depends on quantifying vegetation functional diversity. However, representing this diversity at the global scale is challenging. Typically, in Earth system models, characterization of plant diversity has been limited to grouping related species into plant fun...
Article
Is it possible to predict the composition of local plant assemblages? Trait-based approaches have offered some promise, especially in cases where deterministic processes such as environmental filtering and niche differentiation shape communities. In this study, we asked how much intraspecific variation contributes to trait distributions within and...
Article
Full-text available
Macroecology seeks to understand broad-scale patterns in the diversity and abundance of organisms, but macroecologists typically study aboveground macroorganisms. Belowground organisms regulate numerous ecosystem functions, yet we lack understanding of what drives their diversity. Here, we examine the controls on belowground diversity along latitud...
Article
AimsDecades of empirical work have demonstrated how dominant plant species and nitrogen fertilization can influence the structure and function of plant communities. More recent studies have examined the interplay between these factors, but few such studies use an explicit trait-based framework. In this study, we use an explicit trait-based approach...
Article
Full-text available
Investigating the effects of invasive species on native biodiversity is one of the most pressing challenges in ecology. Our goal in this study was to quantify the effects of invasive plants on butterfly and moth communities. In addition, we sought to elucidate the fitness consequences of non-native hosts on lepidopterans. We conducted a meta-analys...
Article
While an appreciation of plant-soil feedbacks (PSF) continues to expand for community and ecosystem ecology, the eco-evolutionary mechanisms and consequences of such feedbacks remain largely unknown or untested. Determining the cause and effect of plant phenotypes is central for understanding these eco-evolutionary dynamics since phenotypes respond...
Article
Full-text available
Recent work has demonstrated that the presence or abundance of specific genotypes, populations, species and phylogenetic clades may influence community and ecosystem properties such as resilience or productivity. Many ecological studies, however, use simple linear models to test for such relationships, including species identity as the predictor va...
Article
Full-text available
The inconsistency of professional development (PD) in teaching for graduate teaching assistants (GTAs) is a widespread problem in higher education. Although GTAs serve an important role in retention of undergraduate science majors and in promotion of scientific literacy in nonmajors, they often lack preparation and ongoing support for teaching. Giv...
Conference Paper
Background/Question/Methods nteractions among organisms can shape biogeochemical cycling. In fact many of the talks in this session explore this topic. These interactions, especially when embedded in different climates, can shape plant traits. Differences among individuals in plant traits, via differences in genotypes and phenotypes, can alter th...
Article
Spatial variation in filters imposed by the abiotic environment causes variation in functional traits within and among plant species. This is abundantly clear for plant species along elevational gradients, where parallel abiotic selection pressures give rise to predictable variation in leaf phenotypes among ecosystems. Understanding the factors res...
Article
Full-text available
Pollinators serve critical roles for the functioning of terrestrial ecosystems, and have an estimated annual value of over $150 billion for global agriculture. Mounting evidence from agricultural systems reveals that pollinators are declining in many regions of the world, and with a lack of information on whether pollinator communities in natural s...
Article
Full-text available
Plant species influence belowground communities in a variety of ways, ultimately impacting nutrient cycling. Functional plant traits provide a means whereby species identity can influence belowground community interactions, but little work has examined whether species identity influences belowground community processes when correcting for evolution...
Article
Full-text available
For competing species to coexist, individuals must compete more with others of the same species than with those of other species. Ecologists search for tradeoffs in how species might partition the environment. The negative correlations among competing species that would be indicative of tradeoffs are rarely observed. A recent analysis showed that e...
Data
Posterior percentiles for parameters: This table contains posterior means and marginal 95% credible intervals for parameter values. (DOCX)

Questions

Questions (2)
Question
I am interested in the effectiveness of current and future legislation to reduce food waste by standardizing expiration date labeling. However it is difficult to assess this without knowing the current frequencies of different types of expiration date (including "use by", "sell by", "best if used by," etc.). Is there any source of data on how frequently each of these types of dates are used, preferably across different categories of food? It would be preferable to have USA data but other countries would be fine too. Thanks!
Question
Thanks for all your work on this. I am interested in citing the concept of essential geodiversity variables and I was wondering if there is a publication that specifically refers to it.

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Cited By

Projects

Projects (2)
Project
Goal: This NASA funded Working Group brings together scientists and practitioners in biodiversity and remote sensing to address two main research questions: (1) How do the relationships between biodiversity and geodiversity change across spatial scales? (2) What derived NASA data products at particular spatial or temporal scales would transform the use of geophysical data by biodiversity scientists? Collaborators: Kyla Dahlin (MSU), Sydne Record (Bryn Mawr), Jennifer Costanza (NC State), Andrew Finley (MSU), Kieth Gaddis (AAAS/NASA), Martina Hobi (WSL), Andrew Latimer (UC Davis), Sparkle Malone (USDA Forest Service), Scott Ollinger (UNH), Stephanie Pau (Florida State), Woody Turner (NASA), Adam Wilson (University at Buffalo, SUNY) Funding: National Aeronautics and Space Administration (NASA) Publications: Zarnetske et al. in revision GEB, Record et al. in revision Chapter in: Remote Sensing of Biodiversity​ GitHub: https://github.com/bioXgeo
Project
We are interested in understanding how biotic interactions directly and indirectly affect community structure and function. In particular, we are interested in how competition and herbivory interact with warming to affect early successional field community composition, phenology, and plant traits in Michigan. Lab members: Phoebe Zarnetske, Kileigh Welshofer, Nina Lany, Mark Hammond, Kathryn Schmidt, Tori Niewohner, Elizabeth Postema, Amy Wrobleski Funding: Michigan State University, University of Michigan Biological Station, Kellogg Biological Station REU Program Publications: Welshofer et al. 2018 Oecologia, Welshofer et al. 2018 Methods in Ecology & Evolution ​GitHub: https://github.com/plzmsu/warmXtrophic