Global and regional assessments of unsustainable groundwater use in irrigated agriculture

Groundwater is an essential input to agriculture world-wide, but it is clear that current rates of groundwater use are unsustainable in the long term. This dissertation assesses both current use of groundwater for country- to global-scale agriculture, and looks at the future of groundwater. The focus is on 1) quantifying food directly produced as a result of groundwater use across spatially-varying agricultural systems, 2) projecting future groundwater demands with consideration of climate change and human decision-making, and 3) understanding the system dynamics of groundwater re-use through surface water systems. All three are addressed using a process-based model designed to simulate both natural and human-impacted water systems. Groundwater is an essential input to agriculture world-wide, but it is clear that current rates of groundwater use are unsustainable in the long term. This dissertation assesses both current use of groundwater for country- to global-scale agriculture, and looks at the future of groundwater. The focus is on 1) quantifying food directly produced as a result of groundwater use across spatially-varying agricultural systems, 2) projecting future groundwater demands with consideration of climate change and human decision-making, and 3) understanding the system dynamics of groundwater re-use through surface water systems. All three are addressed using a process-based model designed to simulate both natural and human-impacted water systems. Human decisions about water resource management can impact both the demand and sustainability of groundwater use. Chapter 2 takes an interdisciplinary approach to projecting India’s future (to 2050) groundwater demands, combining hydrology and econometric modeling. The econometric model projects how humans make decisions to expand or contract the irrigated land area of crops in response to climate change. Even in areas with precipitation increases, human decisions to expand irrigated areas led to increasing demands for groundwater. We additionally assessed the potential impact of a large water infrastructure project to alleviate groundwater demands in India, and found that maximum alleviation (up to 16%) was dependent upon the storage volume and location of new reservoirs. One proposed method for reducing the world’s demand for groundwater is to increase the efficiency of agricultural water use. However, these same inefficiencies cause a portion of extracted groundwater to enter surface water systems; it can then be reused, creating a complex system in which groundwater demand does not linearly decline with increased water use efficiency. Chapter 3 quantifies the amount of groundwater that enters surface water systems, the number of times this water is reused for agriculture, and the minimum amount of groundwater required by current agricultural systems in the hypothetical scenario of perfect irrigation efficiency

Dissecting drought tolerance in winter wheat using phenotypic and genetic analyses of agronomic and spectral traits

2015 Summer.To view the abstract, please see the full text of the document

Male smokers' experiences of an appearance-focused facial-ageing intervention.

This study investigated 30 male smokers' experiences of an appearance-focused, facial-ageing intervention. Individual interviews (n = 21) and three focus groups (n = 9) were conducted. Transcripts were analysed using thematic analysis. Male smokers explained that viewing the impacts of smoking on their own faces was the most effective part of the intervention and 22 men (73%) said that they intended quitting smoking or reducing number of cigarettes smoked post-intervention. It is recommended that designers of appearance-focused interventions target men in the future as the current findings demonstrated that the majority of men engaged well with the intervention

Body Image and the Exercising Female

This chapter provides a summary of the current multidisciplinary evidence base for research on body image in the exercising female, including considering how to improve body image in women who engage in sport and exercise. The chapter summarises research on relevant cultural and subcultural pressures to be slender, provides a critical review of relevant literature on body image in the exercising female, and makes recommendations for promoting positive body image in women engaged in sport and exercise

Future of Winter in Northeastern North America: Climate Indicators Portray Warming and Snow Loss that will Impact Ecosystems and Communities

Winters in northeastern North America have warmed faster than summers, with impacts on ecosystems and society. Global climate models (GCMs) indicate that winters will continue to warm and lose snow in the future, but uncertainty remains regarding the magnitude of warming. Here, we project future trends in winter indicators under lower and higher climate-warming scenarios based on emission levels across northeastern North America at a fine spatial scale (1/16°) relevant to climate-related decision making. Under both climate scenarios, winters continue to warm with coincident increases in days above freezing, decreases in days with snow cover, and fewer nights below freezing. Deep snowpacks become increasingly short-lived, decreasing from a historical baseline of 2 months of subnivium habitat to warmer, higher-emissions climate scenario. Warmer winter temperatures allow invasive pests such as Adelges tsugae (Hemlock Woolly Adelgid) and Dendroctonus frontalis (Southern Pine Beetle) to expand their range northward due to reduced overwinter mortality. The higher elevations remain more resilient to winter warming compared to more southerly and coastal regions. Decreases in natural snowpack and warmer temperatures point toward a need for adaptation and mitigation in the multi-million-dollar winter-recreation and forest-management economies

Men’s experiences of a personalised, appearance-based, facial-morphing, safer drinking intervention

Risky alcohol consumption behaviours remain commonplace, representing a major threat to health and safety, and are especially evidenced by young university students. Consequently, new interventions targeting this high-risk group are required. The current study investigated young male university students’ experiences of a personalised, appearance-based, facial morphing, safer drinking intervention. Twenty-five male student participants were recruited, aged 18–34 years. Inductive thematic analysis of data gathered whilst participants were immersed in the intervention, and thereby exposed to alcohol-aged images of their own faces, produced four primary themes: alcohol as a threat to appearance and health, motivations to protect appearance, motivational aspects of the intervention, and proposed improvements and applications. The results of the current study suggested that participants expressed intentions towards healthier consumption/maintenance of already non-risky intake, supporting the potential of the facial-morphing appearance-based approach to address risky alcohol consumption, even in high-risk groups

Tracking environmental change using low-cost instruments during the winter-spring transition season

Author Posting. © University of California Press, 2022. This article is posted here by permission of University of California Press for personal use, not for redistribution. The definitive version was published in Burakowski, E., Sallade, S., Contosta, A., Sanders-DeMott, R., & Grogan, D. Tracking environmental change using low-cost instruments during the winter-spring transition season. American Biology Teacher, 84(4), (2022): 219–222, https://doi.org/10.1525/abt.2022.84.4.219.The winter-spring shoulder season, or vernal window, is a key period for ecosystem carbon, water, and energy cycling. Sometimes referred to as mud season, in temperate forests, this transitional season opens with the melting of snowpack in seasonally snow-covered forests and closes when the canopy fills out. Sunlight pours onto the forest floor, soils thaw and warm, and there is an uptick in soil respiration. Scientists hypothesize that this window of ecological opportunity will lengthen in the future; these changes could have implications across all levels of the ecosystem, including the availability of food and water in human systems. Yet, there remains a dearth of observations that track both winter and spring indicators at the same location. Here, we present an inquiry-based, low-cost approach for elementary to high school classrooms to track environmental changes in the winter-spring shoulder season. Engagement in hypothesis generation and the use of claim, evidence, and reasoning practices are coupled with field measurement protocols, which provides teachers and students an authentic research experience that allows for a place-based understanding of local ecosystems and their connection to climate change.This study was supported by the National Science Foundation (NSF-MSB #1802726 and NSF-1920908) and the United States Forest Service CitSci Fund (#18-CS-11242307-044)

Quantifying the coherence of pure quantum states

In recent years, several measures have been proposed for characterizing the coherence of a given quantum state. We derive several results that illuminate how these measures behave when restricted to pure states. Notably, we present an explicit characterization of the closest incoherent state to a given pure state under the trace distance measure of coherence. We then use this result to show that the states maximizing the trace distance of coherence are exactly the maximally coherent states. We define the trace distance of entanglement and show that it coincides with the trace distance of coherence for pure states. Finally, we give an alternate proof to a recent result that the l(1) measure of coherence of a pure state is never smaller than its relative entropy of coherence

“The most lonely condition I can imagine”: Psychosocial impacts of endometriosis on women’s identity"

Endometriosis is a condition which affects around 1-2 % of women worldwide and has profound effects on their everyday lives. Previous research has tended to focus on physical symptoms (such as chronic pain); how women manage changes to their identity and relationships as a result of endometriosis has received less attention. This paper discusses qualitative data examining how women negotiate changes to identity while living with endometriosis, in a social context where women are expected to minimise their symptoms and conform to feminine role expectations. We conducted thematic analysis of 34 replies to an online survey seeking qualitative text responses. The women identified disruptions to personal identity as a result of living with endometriosis. They talked about not feeling like themselves (Theme 1) and about reactions from medical and social connections prompting feelings that they were going “mad” (Theme 2). Participants also expressed feeling as though they were a burden to loved ones (Theme 3) which often resulted in self-silencing (Theme 4). Findings are discussed in the context of Western expectations of women’s roles in social relationships and suggest that professionals who support women with endometriosis should be aware of strategies such as self-silencing which may reduce effective self-care