Allison M Leach

Biographic Data

ID6020009
NAMEAllison M Leach
GIVEN NAMESAllison M
FAMILY NAMELeach
SIGNATURELEACH A M
AFFILIATIONSUniversity of New Hampshire
ORCID0000-0003-0171-1405
VERIFIEDYes
TOTAL WORKS23
TOTAL CITATIONS43
WORKS AS AUTHOR23
WORKS AS EDITOR0
FIRST PUBLICATION YEAR2012
LATEST PUBLICATION YEAR2025
H-INDEX3

  • Focus on environmental footprint tools for sustainability

    Open AccessJames N Galloway, Jana E Compton et al.ARTICLEEnvironmental Research Letters2025

  • The Danish nitrogen footprint

    Open AccessJaap Vos, Jacques Louis Vos et al.ARTICLEEnvironmental Research Letters2025

    Anthropogenic production of reactive nitrogen (N r ) amplifies the negative impact of excess N r on the environment, causing harm to both ecosystems and human health. N-footprint tools offer a valuable method for predicting N r emissions, helping to identify leakage points across the entire production chain, from farm to plate. This study estimates the N-footprint of an average Danish individual based on population-based consumption patterns. The…

  • The nitrogen footprint of Ukraine

    Open AccessSergiy Medinets, Allison M Leach et al.ARTICLEEnvironmental Research Letters2024

    Unintended reactive nitrogen (N) losses from agriculture, energy and transportation pose significant environmental hazards, including eutrophication, acidification, water and air pollution, biodiversity loss, human health risks and climate change. The concept of a nitrogen footprint (NF) emerges as a pivotal metric, reflecting potential N losses in the entire production-consumption chain of goods and services used by an individual within a define…

  • Footprint tools tiptoeing towards nitrogen sustainability

    Open AccessJames N Galloway, Elizabeth A Castner et al.ARTICLEEnvironmental Research Letters2024

    As we face multiple environmental crises (e.g. climate change, nutrient pollution, freshwater scarcity), there is often a disconnect between an entity’s activities and the pollution resulting from that activity. Footprint tools help address this disconnect. They are effective in educating people, institutions and communities on how their resource use results in environmental pollution and what we can do to moderate that pollution. These tools con…

  • The U.S. consumer phosphorus footprint

    Open AccessGeneviève S Metson, Graham K MacDonald et al.ARTICLEEnvironmental Research Letters2020

    Phosphorus (P) and nitrogen (N) are essential nutrients for food production but their excess use in agriculture can have major social costs, particularly related to water quality degradation. Nutrient footprint approaches estimate N and P release to the environment through food production and waste management and enable linking these emissions to particular consumption patterns. Following an established method for quantifying a consumer-oriented …

  • The nitrogen footprint of organic food in the United States

    Open AccessLaura Cattell Noll, Allison M Leach et al.ARTICLEEnvironmental Research Letters2020

    We estimated the reactive nitrogen (Nr) lost per unit food Nr consumed for organic food production in the United States and compared it to conventional production. We used a nitrogen footprint model approach, which accounts for both differences in Nr losses as well as differences in productivity of the two systems. Additionally, we quantified the types of Nr inputs (new versus recycled) that are used in both production systems. We estimated Nr lo…

  • A community nitrogen footprint analysis of Baltimore City, Maryland

    Open AccessElizabeth Dukes, Elizabeth S M Dukes et al.ARTICLEEnvironmental Research Letters2020

    The nitrogen footprint tool (NFT) provides a novel way for communities to understand the environmental impacts of their collective activities and consumption. Reactive nitrogen (Nr; all N species except N 2 ) is created by the Haber–Bosch process for food production and as a by-product of fossil fuel combustion and two natural processes, biological nitrogen fixation and lightning. While it is a vital input for food production, too much Nr has a n…

  • Reactive nitrogen spatial intensity (NrSI)

    Open AccessXia Liang, Liang Xia et al.ARTICLEGlobal Environmental Change2018Cited by: 1References: 2

  • How China’s nitrogen footprint of food has changed from 1961 to 2010

    Open AccessMengchu Guo, Xiaohui Chen et al.ARTICLEEnvironmental Research Letters2017

    People have increased the amount of reactive nitrogen (Nr) in the environment as a result of food production methods and consumption choices. However, the connection between dietary choices and environmental impacts over time has not yet been studied in China. Here we combine a nitrogen footprint tool, the N-Calculator, with a food chain model, NUFER (NUtrient flows in Food chains, Environment and Resources use), to analyze the N footprint of foo…

  • Informing a sustainable food future

    Open AccessNicole Tichenor Blackstone, Allison M LeachARTICLEEnvironmental Research Letters2017

  • Toward a nitrogen footprint calculator for Tanzania

    Open AccessMary Olivia Hutton, Allison M Leach et al.ARTICLEEnvironmental Research Letters2017

    We present the first nitrogen footprint model for a developing country: Tanzania. Nitrogen (N) is\na crucial element for agriculture and human nutrition, but in excess it can cause serious\nenvironmental damage. The Sub-Saharan African nation of Tanzania faces a two-sided nitrogen\nproblem: while there is not enough soil nitrogen to produce adequate food, excess nitrogen that\nescapes into the environment causes a cascade of ecological and human …

  • Nitrogen footprints

    Open AccessHideaki Shibata, James N Galloway et al.ARTICLEAMBIO2017Cited by: 1References: 39

    Nitrogen (N) management presents a sustainability dilemma: N is strongly linked to energy and food production, but excess reactive N causes environmental pollution. The N footprint is an indicator that quantifies reactive N losses to the environment from consumption and production of food and the use of energy. The average per capita N footprint (calculated using the N-Calculator methodology) of ten countries varies from 15 to 47 kg N capita−1 ye…

  • Meeting future food demand with current agricultural resources

    Open AccessKeith F Davis, Jessica A Gephart et al.ARTICLEGlobal Environmental Change2016Cited by: 17References: 5

  • Environmental impact food labels combining carbon, nitrogen, and water footprints

    Open AccessAllison M Leach, Kyle A Emery et al.ARTICLEFood Policy2016Cited by: 16References: 8

  • Food and feed trade as a driver in the global nitrogen cycle

    Open AccessLuis Lassaletta, Gilles Billen et al.ARTICLEBiogeochemistry2014

  • Nitrogen footprints

    Open AccessJames N Galloway, Wilfried Winiwarter et al.ARTICLEEnvironmental Research Letters2014

    The human alteration of the N cycle has evolved from minimal in the mid-19th century, to extensive in the present time. The consequences on human and environment health are significant. While much attention has been given to the extent and impacts of the alteration, little attention has been given to those entities (i.e., consumers, institutions) that use the resources that result in extensive reactive nitrogen (Nr) creation. This paper reviews a…

  • First approach to the Japanese nitrogen footprint model to predict the loss of nitrogen to the environment

    Open AccessHideaki Shibata, Lia R Cattaneo et al.ARTICLEEnvironmental Research Letters2014

    Humans increase the amount of reactive nitrogen (all N species except N-2) in the environment through a number of processes, primarily food and energy production. Once in the environment, excess reactive nitrogen may cause a host of various environmental problems. Understanding and controlling individual nitrogen footprints is important for preserving environmental and human health. In this paper we present the per capita nitrogen footprint of Ja…

  • Nitrogen-neutrality

    Open AccessAdrian Leip, Allison M Leach et al.ARTICLEEnvironmental Research Letters2014

    We propose a novel indicator measuring one dimension of the sustainability of an entity in modern societies: Nitrogen-neutrality. N-neutrality strives to offset Nr releases an entity exerts on the environment from the release of reactive nitrogen (Nr) to the environment by reducing it and by offsetting the Nr releases elsewhere. N-neutrality also aims to increase awareness about the consequences of unintentional releases of nitrogen to the enviro…

  • N-related greenhouse gases in North America

    Open AccessEric A Davidson, JN Galloway et al.ARTICLECurrent Opinion in Environmental…2014Cited by: 1

  • The nitrogen footprint of food products and general consumption patterns in Austria

    Open AccessMagdalena Pierer, Wilfried Winiwarter et al.ARTICLEFood Policy2014Cited by: 7References: 3

  • Consequences of human modification of the global nitrogen cycle

    Open AccessJ W Erisman, James N Galloway et al.ARTICLEPhilosophical Transactions of the…2013

    The demand for more food is increasing fertilizer and land use, and the demand for more energy is increasing fossil fuel combustion, leading to enhanced losses of reactive nitrogen (N r ) to the environment. Many thresholds for human and ecosystem health have been exceeded owing to N r pollution, including those for drinking water (nitrates), air quality (smog, particulate matter, ground-level ozone), freshwater eutrophication, biodiversity loss,…

  • The global nitrogen cycle in the twenty-first century

    Open AccessDavid Fowler, Mhairi Coyle et al.ARTICLEPhilosophical Transactions of the…2013

    Global nitrogen fixation contributes 413 Tg of reactive nitrogen (N r ) to terrestrial and marine ecosystems annually of which anthropogenic activities are responsible for half, 210 Tg N. The majority of the transformations of anthropogenic N r are on land (240 Tg N yr −1 ) within soils and vegetation where reduced N r contributes most of the input through the use of fertilizer nitrogen in agriculture. Leakages from the use of fertilizer N r cont…

  • A nitrogen footprint model to help consumers understand their role in nitrogen losses to the environment

    Open AccessAllison M Leach, James N Galloway et al.ARTICLEEnvironmental Development2012