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Articles 31 - 60 of 231
Full-Text Articles in Geography
He's A Builder, But Does Trump Have An Urban Agenda?, Mark Davidson
He's A Builder, But Does Trump Have An Urban Agenda?, Mark Davidson
Geography
For 20 years, turbulence has defined American urbanism. In the late noughties, a global financial crisis pushed many US cities to the brink of bankruptcy. Austerity followed, with belt-tightening squeezing city services. Then came Trump, then came COVID. The pandemic would, unpredictably, make US cities cash rich thanks to the Federal government's largesse. And now we await Trump 2.0. For US cities the prospect of radical change seems real. But what type of reform will Trump bring? Herein lies the difficulty. Trump 2.0 is as hard to predict as the first version was. Immigration, tariff reform and government efficiency are …
The Potential For Albedo-Induced Climate Mitigation Using No-Till Management In Midwestern U.S. Croplands, Xian Wang, Mallory Barnes, Landon Yoder, Christopher A. Williams, Jennifer Tank, Todd Royer, Shellye Suttles, Kim Novick
The Potential For Albedo-Induced Climate Mitigation Using No-Till Management In Midwestern U.S. Croplands, Xian Wang, Mallory Barnes, Landon Yoder, Christopher A. Williams, Jennifer Tank, Todd Royer, Shellye Suttles, Kim Novick
Geography
No-till management is often recognized for its environmental and economic benefits, but its potential to reduce climate warming is still uncertain. Beyond ongoing debate over its effects on soil carbon storage, no-till also leaves plant residue on the surface, which can reflect more sunlight. This increase in surface reflectivity, called albedo, may help mitigate climate change by reducing the energy absorbed by the land. Here, we assessed this climate benefit of no-till across the U.S. Corn Belt using conservation survey records, county-level tillage data, and satellite observations. We found that no-till increased land surface brightness during the dormant season, reducing …
Temporal And Spatial Dynamics Of Urban Heat In The City Of Córdoba, Argentina, Florencia Sangermano, María Lila Asar, Andrés M. Visintin, Elisabet Benítez, Francisco F. Ludueña-Almeida, Elizabet L. Estallo
Temporal And Spatial Dynamics Of Urban Heat In The City Of Córdoba, Argentina, Florencia Sangermano, María Lila Asar, Andrés M. Visintin, Elisabet Benítez, Francisco F. Ludueña-Almeida, Elizabet L. Estallo
Geography
Introduction: Climate change is expected to exacerbate the Urban Heat Island (UHI) effect in the coming decades by altering the structure and function of urban ecosystems and impacting human health. Methods: This research assesses the dynamics of the UHI effect in the city of Córdoba, Argentina, by analyzing temperature trends over the past 19 years. Urban areas were classified into five classes using satellite imagery. Monthly average daytime and nighttime MODIS Land Surface Temperature (LST) were used to assess thermal differences across urban classes and temporal trends. Results: Daytime urban cooling occurred during the winter and heating during the summer, …
Accounting For Albedo Change To Identify Climate-Positive Tree Cover Restoration, Natalia Hasler, Christopher A. Williams, Vanessa Carrasco Denney, Peter W. Ellis, Surendra Shrestha, Drew E. Terasaki Hart, Nicholas H. Wolff, Samantha Yeo, Thomas W. Crowther, Leland K. Werden, Susan Cook-Patton
Accounting For Albedo Change To Identify Climate-Positive Tree Cover Restoration, Natalia Hasler, Christopher A. Williams, Vanessa Carrasco Denney, Peter W. Ellis, Surendra Shrestha, Drew E. Terasaki Hart, Nicholas H. Wolff, Samantha Yeo, Thomas W. Crowther, Leland K. Werden, Susan Cook-Patton
Geography
Restoring tree cover changes albedo, which is the fraction of sunlight reflected from the Earth’s surface. In most locations, these changes in albedo offset or even negate the carbon removal benefits with the latter leading to global warming. Previous efforts to quantify the global climate mitigation benefit of restoring tree cover have not accounted robustly for albedo given a lack of spatially explicit data. Here we produce maps that show that carbon-only estimates may be up to 81% too high. While dryland and boreal settings have especially severe albedo offsets, it is possible to find places that provide net-positive climate …
Analyzing The Losses And Gains Of A Land Category: Insights From The Total Operating Characteristic, Thomas Mumuni Bilintoh, Robert Gilmore Pontius, Zhen Liu
Analyzing The Losses And Gains Of A Land Category: Insights From The Total Operating Characteristic, Thomas Mumuni Bilintoh, Robert Gilmore Pontius, Zhen Liu
Geography
This manuscript provides guidance concerning how to use the Total Operating Characteristic (TOC) when (1) analyzing change through time, (2) ranking a categorical independent variable, and (3) constraining the extent for a gaining category. The illustrative variable is the marsh land-cover category in the Plum Island Ecosystems of northeastern Massachusetts, USA. The data are an elevation map and maps showing the land categories of water, marsh, and upland in 1938, 1971, and 2013. There were losses and gains near the edge of the marsh between 1938 and 1972 and between 1972 and 2013. The TOC curves show that marsh gained …
Drought As An Emergent Driver Of Ecological Transformation In The Twenty-First Century, Wynne E. Moss, Shelley D. Crausbay, Imtiaz Rangwala, Jay W. Wason, Clay Trauernicht, Camille S. Stevens-Rumann, Anna Sala, Caitlin M. Rottler, Gregory T. Pederson, Brian W. Miller, Dawn R. Magness, Jeremy S. Littell, Lee E. Frelich, Abby Frazier, Kimberly T. Davis, Jonathan D. Coop, Jennifer M. Cartwright, Robert K. Booth
Drought As An Emergent Driver Of Ecological Transformation In The Twenty-First Century, Wynne E. Moss, Shelley D. Crausbay, Imtiaz Rangwala, Jay W. Wason, Clay Trauernicht, Camille S. Stevens-Rumann, Anna Sala, Caitlin M. Rottler, Gregory T. Pederson, Brian W. Miller, Dawn R. Magness, Jeremy S. Littell, Lee E. Frelich, Abby Frazier, Kimberly T. Davis, Jonathan D. Coop, Jennifer M. Cartwright, Robert K. Booth
Geography
Under climate change, ecosystems are experiencing novel drought regimes, often in combination with stressors that reduce resilience and amplify drought's impacts. Consequently, drought appears increasingly likely to push systems beyond important physiological and ecological thresholds, resulting in substantial changes in ecosystem characteristics persisting long after drought ends (i.e., ecological transformation). In the present article, we clarify how drought can lead to transformation across a wide variety of ecosystems including forests, woodlands, and grasslands. Specifically, we describe how climate change alters drought regimes and how this translates to impacts on plant population growth, either directly or through drought's interactions with factors …
Understanding The Roles Of Economy And Society In The Relative Risks Of Zoonosis Emergence From Livestock, Stephen Hinchcliffe, Alex Blanchette, Kin Wang (Ray) Chan, Chris Degeling, Jody Emel, Melissa Leach, Ian Scoones, Michael Winter
Understanding The Roles Of Economy And Society In The Relative Risks Of Zoonosis Emergence From Livestock, Stephen Hinchcliffe, Alex Blanchette, Kin Wang (Ray) Chan, Chris Degeling, Jody Emel, Melissa Leach, Ian Scoones, Michael Winter
Geography
The emergence of zoonotic infections that can develop into pathogens of pandemic potential is a major concern for public health. The risks of emergence and transmission relate to multiple factors that range from land use to human-non-human animal contacts. Livestock agriculture plays a potentially significant role in those risks, shaping landscapes and providing hosts that can act as the source or amplifiers of emergent pathogens. The relative risks will be contingent upon the nature of those systems, with comparisons often made between intensive, indoor, biosecure systems and more extensive, outdoor, insecure systems. Microbiological, ecological and veterinary sciences provide useful entry …
Divergent Biophysical Responses Of Western United States Forests To Wildfire Driven By Eco-Climatic Gradients, Surendra Shrestha, Christopher A. Williams, Brendan M. Rogers, John Rogan, Dominik Kulakowski
Divergent Biophysical Responses Of Western United States Forests To Wildfire Driven By Eco-Climatic Gradients, Surendra Shrestha, Christopher A. Williams, Brendan M. Rogers, John Rogan, Dominik Kulakowski
Geography
Understanding vegetation recovery after fire is critical for predicting vegetation-mediated ecological dynamics in future climates. However, information characterizing vegetation recovery patterns after fire and their determinants over large geographical extents is limited. This study uses Moderate Resolution Imaging Spectroradiometer (MODIS) leaf area index (LAI) and albedo to characterize patterns of post-fire biophysical dynamics across the western United States (US) and further examines the influence of topo-climatic variables on the recovery of LAI and albedo at two different time horizons, 10 and 20 years post-fire, using a random forest model. Recovery patterns were derived for all wildfires that occurred between 1986 …
Soil Moisture Profile Estimation By Combining P-Band Sar Polarimetry With Hydrological And Multi-Layer Scattering Models, Anke Fluhrer, Thomas Jagdhuber, Carsten Montzka, Maike Schumacher, Hamed Alemohammad, Alireza Tabatabaeenejad, Harald Kunstmann, Dara Entekhabi
Soil Moisture Profile Estimation By Combining P-Band Sar Polarimetry With Hydrological And Multi-Layer Scattering Models, Anke Fluhrer, Thomas Jagdhuber, Carsten Montzka, Maike Schumacher, Hamed Alemohammad, Alireza Tabatabaeenejad, Harald Kunstmann, Dara Entekhabi
Geography
An approach for estimating vertically continuous soil moisture profiles under varying vegetation covers by combining remote sensing with soil (hydrological) modeling is proposed. The approach uses decomposed soil scattering components, after the removal of the vegetation scattering components from fully polarimetric P-band SAR observations. By comparing these with hydrological simulations, soil moisture profiles from the soil surface until a soil depth of 30 cm (assumed average P-band penetration depth) are estimated. Here, the hydrological model HYDRUS-1D, as a representative of any soil hydrological model, is employed to simulate an ensemble of realistic soil moisture profiles, which are used for a …
We Need A Solid Scientific Basis For Nature-Based Climate Solutions In The United States, Kimberly A. Novick, Trevor F. Keenan, William R L Anderegg, Caroline P. Normile, Benjamin R K Runkle, Emily E. Oldfield, Gyami Shrestha, Margaret E K Evans, Dennis D. Baldocchi, James T. Randerson, Jonathan Sanderman, Margaret S. Torn, Anna T. Trugman, Christopher A. Williams
We Need A Solid Scientific Basis For Nature-Based Climate Solutions In The United States, Kimberly A. Novick, Trevor F. Keenan, William R L Anderegg, Caroline P. Normile, Benjamin R K Runkle, Emily E. Oldfield, Gyami Shrestha, Margaret E K Evans, Dennis D. Baldocchi, James T. Randerson, Jonathan Sanderman, Margaret S. Torn, Anna T. Trugman, Christopher A. Williams
Geography
Opinion piece mapping the many challenges and variables around nature-based climate solutions (NbCS) in the United States, and the need to pinpoint large-scale strategies that will lead to significant, durable, and measurable net climate cooling. They must do so without simply displacing emissions to other locations.
Increasing Mine Waste Will Induce Land Cover Change That Results In Ecological Degradation And Human Displacement, John R. Owen, Deanna Kemp, Alex M. Lechner, Michelle Ang Li Ern, Éléonore Lèbre, Gavin M. Mudd, Mark G. Macklin, Muhamad Risqi U. Saputra, Tahjudil Witra, Anthony J. Bebbington
Increasing Mine Waste Will Induce Land Cover Change That Results In Ecological Degradation And Human Displacement, John R. Owen, Deanna Kemp, Alex M. Lechner, Michelle Ang Li Ern, Éléonore Lèbre, Gavin M. Mudd, Mark G. Macklin, Muhamad Risqi U. Saputra, Tahjudil Witra, Anthony J. Bebbington
Geography
Highlights
- Mining-induced displacement is a severely under researched social policy problem.
- Through global data sources and historic remote sensing we analyze this problem.
- The main output of most mining activity is hazardous waste.
- We confirm waste as the principal source of human displacement globally in mining.
- Resources to fuel urbanisation and energy transition targets will drive increases in waste.
Patterns Of Infringement, Risk, And Impact Driven By Coal Mining Permits In Indonesia, Tim T. Werner, Tessa Toumbourou, Victor Maus, Martin C. Lukas, Laura J. Sonter, Muhamad Muhdar, Rebecca K. Runting, Anthony J. Bebbington
Patterns Of Infringement, Risk, And Impact Driven By Coal Mining Permits In Indonesia, Tim T. Werner, Tessa Toumbourou, Victor Maus, Martin C. Lukas, Laura J. Sonter, Muhamad Muhdar, Rebecca K. Runting, Anthony J. Bebbington
Geography
Coal mining is known for its contributions to climate change, but its impacts on the environment and human lives near mine sites are less widely recognised. This study integrates remote sensing, GIS, stakeholder interviews and extensive review of provincial data and documents to identify patterns of infringement, risk and impact driven by coal mining expansion across East Kalimantan, Indonesia. Specifically, we map and analyse patterns of mining concessions, land clearing, water cover, human settlement, and safety risks, and link them with mining governance and regulatory infractions related to coal mining permits. We show that excessive, improper permit granting and insufficient …
Amazonia In Motion: Changing Politics, Development Strategies, Peoples, Landscapes And Livelihoods, Susanna Hecht, Marianne Schmink, Rebecca Neaera Abers, Eduardo Assad, Denise Bebbington, Eduardo Brodizio, Francisco De Assis Costa, Ana María Calisto Durán, Philip Fearnside, Rachael Garrett, Sebastian Heilpern, David Mcgrath, Gustavo Oliveira, Henrique Pereira, Miguel Pinedo-Vazquez
Amazonia In Motion: Changing Politics, Development Strategies, Peoples, Landscapes And Livelihoods, Susanna Hecht, Marianne Schmink, Rebecca Neaera Abers, Eduardo Assad, Denise Bebbington, Eduardo Brodizio, Francisco De Assis Costa, Ana María Calisto Durán, Philip Fearnside, Rachael Garrett, Sebastian Heilpern, David Mcgrath, Gustavo Oliveira, Henrique Pereira, Miguel Pinedo-Vazquez
Geography
We review the often-invisible powerful processes that drive social and ecological change in Amazonia, and the diverse peoples who inhabit its landscapes. It explores large-scale development ideologies of modernization, and the policy tools that were deployed to carry them out. Outlining general periods of macro policy shifts, we show the evolution of the framework for today’s complex interactions between large-scale agroindustry, mining, and hydrocarbons, and diverse small-scale livelihoods, as well as the clandestine and illicit economies of land grabbing, gold, coca and timber, and their operation in globalized and regional economies. While Pan-Amazonian governments have oscillated between authoritarian and democratic …
Growing Up Sustainable? Politics Of Race And Youth In Urbanplan, Copenhagen, Max Ritts, Rebecca Rutt
Growing Up Sustainable? Politics Of Race And Youth In Urbanplan, Copenhagen, Max Ritts, Rebecca Rutt
Geography
This paper considers how racialized youth in Denmark negotiate sustainability amid contexts marked by intersecting forms of economic restructuring, progressive neoliberalism, white ethno-nationalism, and green urban planning. Urbanplan is a low-income, notoriously “troubled” Copenhagen neighborhood where we conducted fieldwork for 7 months (2019-2020) with fifteen male youth, aged 17-21. Using ethnography, policy reviews, and interviews with city social workers, we explore how intimate experiences of nature, group-identity, and place attachment here relate to and depart from the structural forces actively reshaping the neighborhood. Our analysis combines Cindi Katz's intersectional political economy approach with recent work on green gentrification, Critical Utopian …
Methods To Compare Sites Concerning A Category’S Change During Various Time Intervals, Thomas Mumuni Bilintoh, Robert Gilmore Pontius, Aiyin Zhang
Methods To Compare Sites Concerning A Category’S Change During Various Time Intervals, Thomas Mumuni Bilintoh, Robert Gilmore Pontius, Aiyin Zhang
Geography
This paper presents new methods to analyze a category’s change through a time series of maps, even when the time intervals have inconsistent durations. The methods include an option to facilitate comparison among sites by expressing results as an annual percentage of each site’s unified size. A site’s unified size is the union of where the category exists at any of the site’s time points. The methods also specify gross losses, gross gains, eight trajectories, and three components: Quantity, Exchange, and Alternation. The illustrative application compares maps of the marsh category for three Long-Term Ecological Research sites: Plum Island Ecosystems …
Geopolitics And Geospatial Strategies: The Rise Of Regulatory Supply Chain Controls For Semiconductor Gpn In Japan, South Korea And Taiwan, Yuko Aoyama, Eunyeong Song, Shan-Yu Wang
Geopolitics And Geospatial Strategies: The Rise Of Regulatory Supply Chain Controls For Semiconductor Gpn In Japan, South Korea And Taiwan, Yuko Aoyama, Eunyeong Song, Shan-Yu Wang
Geography
In this article, we present an analysis of how East Asian states (specifically, Japan, South Korea and Taiwan) are adapting to the emerging geopolitical contexts of the 'great powers competition' between the United States and China. To the extent that the previous literature on GPN/GVC governance included the state as one of the extra-firm actors, geopolitics has not been explicitly dealt with in its role in shaping GPN/GVC governance. We build on the existing research on GPN/GVC governance and propose a shift in perspective, from one of cost-driven to diplomacy-driven governance. Taking the case of the semiconductor industry, we conduct …
Protecting Brazilian Amazon Indigenous Territories Reduces Atmospheric Particulates And Avoids Associated Health Impacts And Costs, Paula R. Priest, Florencia Sangermano, Allison Bailey, Victoria Bugni, María Del Carmen Villalobos-Segura, Nataly Pimiento-Quiroga, Peter Daszak, Carlos Zambrana-Torrelio
Protecting Brazilian Amazon Indigenous Territories Reduces Atmospheric Particulates And Avoids Associated Health Impacts And Costs, Paula R. Priest, Florencia Sangermano, Allison Bailey, Victoria Bugni, María Del Carmen Villalobos-Segura, Nataly Pimiento-Quiroga, Peter Daszak, Carlos Zambrana-Torrelio
Geography
Indigenous territories are considered important for conservation, but little is known about their role in maintaining human health. Here we quantified the potential human health and economic benefits of protecting these territories in the Brazilian Amazon, by using cardiovascular and respiratory diseases cases, pollutant and forest cover data. Between 2010 and 2019, 1.68 tons of Particulate Matter of small size (PM2.5) were released every year, with negative effects for human health. A lower number of infections was also found in municipalities with more forested areas, and with a low level of fragmentation, which probably is related to the …
Examining Current Bias And Future Projection Consistency Of Globally Downscaled Climate Projections Commonly Used In Climate Impact Studies, Lucas Berio Fortini, Lauren R. Kaiser, Abby Frazier, Thomas W. Giambelluca
Examining Current Bias And Future Projection Consistency Of Globally Downscaled Climate Projections Commonly Used In Climate Impact Studies, Lucas Berio Fortini, Lauren R. Kaiser, Abby Frazier, Thomas W. Giambelluca
Geography
The associated uncertainties of future climate projections are one of the biggest obstacles to overcome in studies exploring the potential regional impacts of future climate shifts. In remote and climatically complex regions, the limited number of available downscaled projections may not provide an accurate representation of the underlying uncertainty in future climate or the possible range of potential scenarios. Consequently, global downscaled projections are now some of the most widely used climate datasets in the world. However, they are rarely examined for representativeness of local climate or the plausibility of their projected changes. Here we explore the utility of two …
In Africa, "Climate-Smart" Conservation Must Be Coupled With Poverty Alleviation, Saleem H. Ali, Penda Diallo, Apoli Bertrand Kameni, Philippe Le Billon, Kopo Oromeng, Kyle Frankel Davis, Edward Carr
In Africa, "Climate-Smart" Conservation Must Be Coupled With Poverty Alleviation, Saleem H. Ali, Penda Diallo, Apoli Bertrand Kameni, Philippe Le Billon, Kopo Oromeng, Kyle Frankel Davis, Edward Carr
Geography
In August, the Seventh Assembly of the Global Environment Facility (GEF) concluded in Vancouver, Canada, with a pledge. A total of 185 countries agreed to protect 30% of land and coastal areas by 2030 (known as the “30 by 30 pledge”). But while this surge of conservation funding is heartening, there are serious concerns. Projects and programs that appear to produce both environmental and developmental goals could actually obscure the continuing marginalization of poor and vulnerable populations. Here, we suggest that such coupling of conservation and extraction needs to pay greater attention to poverty alleviation. Otherwise, it risks further marginalizing …
Structural Tensions Limiting Success Of Infrastructure Upgrading: A Multi-Regime Perspective, George Kiambuthi Wainaina, Bernhard Truffer, James T. Murphy
Structural Tensions Limiting Success Of Infrastructure Upgrading: A Multi-Regime Perspective, George Kiambuthi Wainaina, Bernhard Truffer, James T. Murphy
Geography
Unfettered growth of slums is a daunting transition challenge and many upgrading programs fail to sustainably improve the livelihoods of slum residents. This paper elaborates a transitions perspective on structural tensions that may lead to success or failure of slum upgrading programs. We conceptualize slums as urban subsystems, governed by sociotechnical (infrastructure) and socioeconomic livelihood regimes (related to production and social reproduction). The framework permits examination of the tensions due to mis/alignments of rules associated with newly introduced infrastructures, and those that regulate existing production and social reproduction practices of slum residents. This approach extends transition studies by accounting for …
Improved Fine-Scale Tropical Forest Cover Mapping For Southeast Asia Using Planet-Nicfi And Sentinel-1 Imagery, Feng Yang, Xin Jiang, Alan D. Ziegler, Lyndon Estes, Jin Wu, Anping Chen, Philippe Ciais
Improved Fine-Scale Tropical Forest Cover Mapping For Southeast Asia Using Planet-Nicfi And Sentinel-1 Imagery, Feng Yang, Xin Jiang, Alan D. Ziegler, Lyndon Estes, Jin Wu, Anping Chen, Philippe Ciais
Geography
The accuracy of existing forest cover products typically suffers from “rounding” errors arising from classifications that estimate the fractional cover of forest in each pixel, which often exclude the presence of large, isolated trees and small or narrow forest clearings, and is primarily attributable to the moderate resolution of the imagery used to make maps. However, the degree to which such high-resolution imagery can mitigate this problem, and thereby improve large-area forest cover maps, is largely unexplored. Here, we developed an approach to map tropical forest cover at a fine scale using Planet and Sentinel-1 synthetic aperture radar (SAR) imagery …
The Flow Matrix Offers A Straightforward Alternative To The Problematic Markov Matrix, Jessica Stzempko, Robert Gilmore Pontius
The Flow Matrix Offers A Straightforward Alternative To The Problematic Markov Matrix, Jessica Stzempko, Robert Gilmore Pontius
Geography
The Flow matrix is a novel method to describe and extrapolate transitions among categories. The Flow matrix extrapolates a constant transition size per unit of time on a time continuum with a maximum of one incident per observation during the extrapolation. The Flow matrix extrapolates linearly until the persistence of a category shrinks to zero. The Flow matrix has concepts and mathematics that are more straightforward than the Markov matrix. However, many scientists apply the Markov matrix by default because popular software packages offer no alternative to the Markov matrix, despite the conceptual and mathematical challenges that the Markov matrix …
Cropland Mapping In Tropical Smallholder Systems With Seasonally Stratified Sentinel-1 And Sentinel-2 Spectral And Textural Features, Manushi B. Trivedi, Michael Marshall, Lyndon Estes, C.A.J.M. De Bie, Ling Chang, Andrew Nelson
Cropland Mapping In Tropical Smallholder Systems With Seasonally Stratified Sentinel-1 And Sentinel-2 Spectral And Textural Features, Manushi B. Trivedi, Michael Marshall, Lyndon Estes, C.A.J.M. De Bie, Ling Chang, Andrew Nelson
Geography
Mapping arable field areas is crucial for assessing agricultural productivity but poses challenges in sub-Saharan agroecosystems because of diverse crop calendars, small and irregularly shaped fields, persistent cloud cover, and lack of high-quality model training data. This study proposes several methodological improvements to overcome these challenges. Specifically, it utilizes long-term MODIS data to stratify finer Sentinel-2 reflectance and Sentinel-1 backscatter image features on a per-pixel basis. It also incorporates texture features and employs a machine learning approach with over 300,000 samples. The eastern region of Ghana was stratified into seven seasonal strata exhibiting distinct vegetation seasonality, capturing diversity in crop …
Pandemic Produce: Impacts Of Covid-19 On Florida's Fruit And Vegetable Industries, Christa D. Court, David Outerbridge, Lauri Baker, Laura Birou, Catherine Campbell, Gigi Digiacomo, Sebastian Galindo, John Lai, Alexandre Magnier, Michelle Miller, Gustavo De L.T. Oliveira, Eyrika Orlando, Hikaru Hanawa Peterson, Xiaohui Qiao, Fritz Roka, Andrew Ropicki, Bijeta Bijen Saha, Andrew W. Stevens, Li Zhang
Pandemic Produce: Impacts Of Covid-19 On Florida's Fruit And Vegetable Industries, Christa D. Court, David Outerbridge, Lauri Baker, Laura Birou, Catherine Campbell, Gigi Digiacomo, Sebastian Galindo, John Lai, Alexandre Magnier, Michelle Miller, Gustavo De L.T. Oliveira, Eyrika Orlando, Hikaru Hanawa Peterson, Xiaohui Qiao, Fritz Roka, Andrew Ropicki, Bijeta Bijen Saha, Andrew W. Stevens, Li Zhang
Geography
Florida has one of the most diverse agricultural economies in the United States, producing several dozen types of fruits and vegetables that are consumed within the state, across the country, and around the world. The COVID-19 pandemic and resulting policy responses occurred during the peak of spring harvest season for many crops in Florida, abruptly removing market demand from the food service industry and shifting consumer purchasing habits, which enabled insights into several aspects of the fruit and vegetable supply chain. This article examines how the COVID-19 pandemic impacted fruit and vegetable industries in Florida, how these industries responded to …
Is Closing The Agricultural Yield Gap A "Risky" Endeavor?, Nicolas Gatti, Michael Cecil, Kathy Baylis, Lyndon Estes, Jordan Blekking, Thomas Heckelei, Noemi Vergopolan, Tom Evans
Is Closing The Agricultural Yield Gap A "Risky" Endeavor?, Nicolas Gatti, Michael Cecil, Kathy Baylis, Lyndon Estes, Jordan Blekking, Thomas Heckelei, Noemi Vergopolan, Tom Evans
Geography
CONTEXT: Sub-Saharan Africa (SSA) has the climatic and biophysical potential to grow the crops it needs to meet rapidly growing food demand; however, agricultural productivity remains low. While potential maize yields in Zambia are 9 t per hectare (t/ha), the average farmer produces only 1–2. OBJECTIVE: We evaluate the contribution of responses to weather risk to that gap by decomposing the yield gap in maize in Zambia. While we know that improved seed and fertilizer can expand yield and profit, they may also increase the variance of yield under different weather outcomes, reducing their adoption. METHODS: We use a novel …
Limited Evidence Of Cumulative Effects From Recurrent Droughts In Vegetation Responses To Australia's Millennium Drought, Tong Jiao, Christopher A. Williams, Martin De Kauwe, Belinda E. Medlyn
Limited Evidence Of Cumulative Effects From Recurrent Droughts In Vegetation Responses To Australia's Millennium Drought, Tong Jiao, Christopher A. Williams, Martin De Kauwe, Belinda E. Medlyn
Geography
Drought-induced vegetation declines have been reported across the globe and may have widespread implications for ecosystem composition, structure, and functions. Thus, it is critical to maximizing our understanding of how vegetation has responded to recent drought extremes. To date, most drought assessments emphasized the importance of drought intensity for vegetation responses. However, drought timing, duration, and repeat exposure all may be important aspects of ecosystem response with the potential for non-linear effects. Cumulative effects are one such phenomenon, representing the additional decline due to repeated exposure to drought, and indicating gradual loss of ecosystem resistance. This study quantifies the frequency …
Reduced Fire Severity Offers Near-Term Buffer To Climate-Driven Declines In Conifer Resilience Across The Western United States, Kimberley T. Davis, Marcos D. Robles, Kerry B. Kemp, Philip E. Higuera, Teresa Chapman, Kerry L. Metlen, Jamie L. Peeler, Kyle C. Rodman, Travis Woolley, Robert N. Addington, Brian J. Buma, Alina C. Cansler, Michael J. Case, Brandon M. Collins, Jonathan D. Coop, Solomon Z. Dobrowski, Nathan S. Gill, Collin Haffey, Lucas B. Harris, Brian J. Harvey, Ryan D. Haugo, Matthew D. Hurteau, Dominik Kulakowski, Caitlin E. Littlefield, Lisa A. Mccauley, Nicholas Povak, Kristen L. Shive, Edward Smith, Jens T. Stevens, Camille S. Stevens-Rumann, Alan H. Taylor, Alan J. Tepley, Derek J.N. Young, Robert A. Andrus, Mike A. Battaglia, Julia K. Berkey, Sebastian U. Busby, Amanda R. Carlson, Marin E. Chambers, Erich Kyle Dodson, Daniel Donato, William M. Downing, Paula J. Fornwalt, Joshua S. Halofsky, Ashley Hoffman, Andrés Holz, Jose M. Iniguez, Meg A. Krawchuk, Mark R. Krieder, Andrew J. Larson, Garrett W. Meigs, John Paul Roccaforte, Monica T. Rother, Hugh Safford, Michael Schaedel, Jason S. Sibold, Megan P. Singleton, Alexandra K. Urza, Kyra D. Clark-Wolf, Monica G. Turner
Reduced Fire Severity Offers Near-Term Buffer To Climate-Driven Declines In Conifer Resilience Across The Western United States, Kimberley T. Davis, Marcos D. Robles, Kerry B. Kemp, Philip E. Higuera, Teresa Chapman, Kerry L. Metlen, Jamie L. Peeler, Kyle C. Rodman, Travis Woolley, Robert N. Addington, Brian J. Buma, Alina C. Cansler, Michael J. Case, Brandon M. Collins, Jonathan D. Coop, Solomon Z. Dobrowski, Nathan S. Gill, Collin Haffey, Lucas B. Harris, Brian J. Harvey, Ryan D. Haugo, Matthew D. Hurteau, Dominik Kulakowski, Caitlin E. Littlefield, Lisa A. Mccauley, Nicholas Povak, Kristen L. Shive, Edward Smith, Jens T. Stevens, Camille S. Stevens-Rumann, Alan H. Taylor, Alan J. Tepley, Derek J.N. Young, Robert A. Andrus, Mike A. Battaglia, Julia K. Berkey, Sebastian U. Busby, Amanda R. Carlson, Marin E. Chambers, Erich Kyle Dodson, Daniel Donato, William M. Downing, Paula J. Fornwalt, Joshua S. Halofsky, Ashley Hoffman, Andrés Holz, Jose M. Iniguez, Meg A. Krawchuk, Mark R. Krieder, Andrew J. Larson, Garrett W. Meigs, John Paul Roccaforte, Monica T. Rother, Hugh Safford, Michael Schaedel, Jason S. Sibold, Megan P. Singleton, Alexandra K. Urza, Kyra D. Clark-Wolf, Monica G. Turner
Geography
Increasing fire severity and warmer, drier postfire conditions are making forests in the western United States (West) vulnerable to ecological transformation. Yet, the relative importance of and interactions between these drivers of forest change remain unresolved, particularly over upcoming decades. Here, we assess how the interactive impacts of changing climate and wildfire activity influenced conifer regeneration after 334 wildfires, using a dataset of postfire conifer regeneration from 10,230 field plots. Our findings highlight declining regeneration capacity across the West over the past four decades for the eight dominant conifer species studied. Postfire regeneration is sensitive to high-severity fire, which limits …
Unsettling Participation By Foregrounding More-Than-Human Relations In Digital Forests, Michelle Westerlaken, Jennifer Gabrys, Danilo Urzedo, Max Ritts
Unsettling Participation By Foregrounding More-Than-Human Relations In Digital Forests, Michelle Westerlaken, Jennifer Gabrys, Danilo Urzedo, Max Ritts
Geography
The question of who participates in making forest environments usually refers to human stakeholders. Yet forests are constituted through the participation of many other entities. At the same time, digital technologies are increasingly used in participatory projects to measure and monitor forest environments globally. However, such participatory initiatives are often limited to human involvement and overlook how more-than-human entities and relations shape digital and forest processes. To disrupt conventional anthropocentric understandings of participation, this text travels through three different processes of "unsettling"to show how more-than-human entities and relations disrupt, rework, and transform digital participation in and with forests. First, forest …
A Super-Ensemble Approach To Map Land Cover Types With High Resolution Over Data-Sparse African Savanna Landscapes, Lei Song, Anna Bond Estes, Lyndon Despard Estes
A Super-Ensemble Approach To Map Land Cover Types With High Resolution Over Data-Sparse African Savanna Landscapes, Lei Song, Anna Bond Estes, Lyndon Despard Estes
Geography
Accurate and timely land cover products are critical inputs for landscape planning, and provide key information for biodiversity conservation and food security. However, poor mapping quality and low resolution are considerable issues in existing land cover maps over the African savanna, where land use is complex and changing rapidly, and necessary ground-truth data are sparse and hard to obtain. To overcome this problem, to make optimal use of existing maps, and to minimize manual training data collection, we developed a three-stage ensemble method to make land cover maps. In the first stage, we extracted the consensus of multiple existing land …
Impacts Of Covid-19 On Us Agri-Food Supply Chain Businesses: Regional Survey Results, Hikaru Hanawa Peterson, Gigi Digiacomo, Christa D. Court, Michelle Miller, Gustavo Oliveira, Andrew W. Stevens, Li Zhang, Lauri M. Baker, Joseph Nowak, Eyrika Orlando, Bijeta Bijen Saha
Impacts Of Covid-19 On Us Agri-Food Supply Chain Businesses: Regional Survey Results, Hikaru Hanawa Peterson, Gigi Digiacomo, Christa D. Court, Michelle Miller, Gustavo Oliveira, Andrew W. Stevens, Li Zhang, Lauri M. Baker, Joseph Nowak, Eyrika Orlando, Bijeta Bijen Saha
Geography
Visible disruptions of appropriate food distribution for end consumers during the onset of the COVID-19 pandemic prompted calls for an urgent, renewed look at how the U.S. agri-food system is impacted by and responds to pandemics, natural disasters, and human-made crises. Previous studies suggest the COVID-19 pandemic yielded uneven impacts across agri-food supply chain segments and regions. For a rigorously comparable assessment of the impact of COVID-19 on agri-food businesses, a survey was administered from February to April 2021 to five segments of the agri-food supply chain in three study regions (California, Florida, and the two-state region of Minnesota-Wisconsin). Results …