Preferred Source Research Articles

Trophic Position Stability of Benthic Organisms in a Changing Food Web of an Arctic Fjord Under the Pressure of an Invasive Predatory Snow Crab, Chionoecetes opilio

The introduction of a large predatory snow crab, Chionoecetes opilio, into the Kara Sea is a unique situation where the impact of an invasive species affecting an otherwise undisturbed ecosystem can be observed unhindered by other ecosystem stressors. Trophic interactions are one of the principal relationships between animals and can help assess an ecosystem’s stability. The trophic positions and sources of organic material for the most common benthic species of Blagopoluchiya Bay sampled at different stages of the invasion were calculated using stable isotope analysis. The most pronounced changes in the trophic web occurred amongst the megabenthic species, where previously most abundant deposit-feeding ophiuroids have disappeared. However, the benthic species’ trophic position and primary production source preference did not change. A sea star, Urasterias lincki, remained the highest carnivore in the bay, and the invasive crab remained at a lower trophic level, showing higher omnivory in its diet. Any changes in the consumers’ prey items were within the same trophic level. Overall, active predators became one of the most abundant feeding mode groups. The average weighted trophic position of all megabenthic species increased to the third trophic level, where mostly secondary consumers remained.

Building Information Worlds through Community and Experience: Preliminary Findings of an Ethnographic Study of Vehicle Residents’ Information Practices

Across the United States, an estimated one million people inhabit vehicles as their primary method of housing. While vehicles are among the most common shelters aside from brick-and-mortar homes, few studies have explored this populace. This is among the first studies that investigate vehicle residents from an information perspective. Based on six months of ethnographic fieldwork, this study seeks to explore vehicle residents’ information practices and the resources and source preferences used to support their daily lives. The end goal is to understand how information institutions, namely public libraries, can create service provisions to offer support. Through an information worlds lens, coupled with information horizon interviews, this research seeks to examine how trust is built within this community through information seeking via other vehicle residents. Preliminary findings suggest that the trust constructed within this information world directly impacts vehicle residents’ decisions to turn to their community for information.

Investigating Mobility, Place, and Information Access Through an Ethnographic Study of Vehicle Residents’ Information Practices in the United States

Throughout the United States, an approximated one million people currently inhabit vehicles parked in publicly accessible areas as their primary method of housing. This dissertation explores vehicle residents’ information seeking practices and barriers to information access. Library and Information science (LIS) research has not developed theory related to place, mobility, and information access, despite living in a hyper-mobile world. LIS primarily centers online information behaviors, limiting potential impact on larger populations that face unique barriers to information access. While some studies constructed theory to address the function of place in information behavior, few interrogate how place and mobility impact information access despite geographic mobility serving important functions in various theory constructions. To address the importance of place and mobility in the context of information access, I conducted a multi-method, ethnographic study. Completing two rounds of deeply embedded fieldwork from June-October 2023 in Santa Cruz, California (CA) and from January-February 2024 along the Southern CA and Arizona (AZ) border, I used participant observation, information horizon interviews, and guided tours and photographs of participant’s vehicles to explore vehicle residents’ information practices and information source preferences. I determined my key findings in Spring 2024; they reveal that participants experience micro-fractures in their information landscapes when moving through new information environments. Identifying vehicle residents’ information practices and most used information sources can help public libraries and other information institutions implement improved support services for this growing population as public libraries are well positioned to bolster information access on behalf of its communities.

Preference for water sources and agricultural utilisation among rural households: a case of Akoko district of Ondo State, Nigeria

The increasing challenge of freshwater scarcity amid rising demand and diminishing availability has led to a critical issue threatening sustainable development, especially in rural areas of developing countries like Nigeria. Despite the abundance of studies on rural water use, gaps remain in understanding the interplay between socio-economic factors, and agricultural practices in shaping these preferences and utilisation. Thus, the study investigates the preference for water sources and their utilisation in agricultural activities among rural households in the Akoko district of Ondo State, Nigeria. Cross-sectional data from randomly sampled 240 rural households were collected with the aid of a questionnaire, and employed for the data analysis. Descriptive statistics, logit, and multinomial regressions were used for the data analysis. The findings revealed a dominant preference for rainwater and well water. Factors such as access to safe water sources, time spent, extension service, technology adoption, soil type, experience, and proximity to water sources significantly influence the choice of water source utilization in the area using multinomial logit regression. Again, the results from logit regression revealed that water source, technology adoption, soil type, fish farming, crop farming, farming experience, and distance to water sources significantly affect the use of water for agricultural purposes. Therefore, the policy should enhance water access, consider soil characteristics in agricultural planning, and facilitate knowledge transfer among farmers for optimal water use, recognizing the symbiotic relationship between water access and agricultural sustainability.

Are Changes Occurring in Bacterial Taxa Community and Diversity with the Utilization of Different Substrates within SIR Measurements?

This research explores how the availability of substrates affects the regulation of soil microbial communities and the taxonomical composition of bacteria. The goal is to understand the impact of organic matter and substrate availability and quality on the diversity of soil bacteria. The study observed gradual changes in bacterial diversity in response to the addition of different substrate-induced respiration (SIR) substrates. Understanding the structure, dynamics, and functions of soil microbial communities is essential for assessing soil quality in sustainable agriculture. The preference for carbon sources among bacterial phyla is largely influenced by their life history and trophic strategies. Bacterial phyla like Proteobacteria, Bacteroidetes, and Actinobacteria, which thrive in nutrient-rich environments, preferentially utilize glucose. On the other hand, oligotrophic bacterial phyla such as Acidobacteria or Chloroflexi, which are found in lower numbers, have a lower ability to utilize labile C. The main difference between the two lies in their substrate utilization strategies. Understanding these distinct strategies is crucial for uncovering the bacterial functional traits involved in soil organic carbon turnover. Additionally, adding organic matter can promote the growth of copiotrophic bacteria, thus enhancing soil fertility.

Distribution and environmental preferences of Saprolegnia and Leptolegnia (Oomycota) species in fish hatcheries in Hungary

We studied for the first time the abundance and species distribution of water molds (Oomycota, Saprolegniales) in fish hatcheries in Hungary, with a focus on Saprolegnia and Leptolegnia spp. A total of 182 water mold isolates were obtained from different developmental stages of fish (eggs, fry, and adults) and water samples collected during the spawning season of cyprinids and salmonids. Of the ten water mold species identified based on their ITS–rDNA sequences, S. parasitica, S. ferax, and S. australis were the most abundant. Statistical analyses of species proportions in relation to the sample source and host preference revealed that S. parasitica was significantly more abundant in the host than in water samples, whereas the opposite trend was observed for S. ferax and S. australis. In addition, our results confirmed previous findings that S. australis and S. ferax prefer warm water (+21–24 °C) and that S. parasitica has a wide temperature tolerance (+3–24 °C). The DNA sequence identity analysis showed that the species demarcation criterion for Saprolegnia spp. was approximately 98 % identity, based on ITS–rDNA sequences. Furthermore, our phylogenetic analyses suggest that taxonomic revision of Leptolegnia spp. is necessary.

Unpacking Technological Risks: Different Sources of Concern and Policy Preferences

How concerned are workers about the impact of technological changes on employment, and what policies do they prefer to mitigate potential negative effects of these changes? We address these questions by presenting new analytical distinctions among different types of labour market concerns. We differentiate among the risk of job substitution, ‘technostress’ and general apprehension about the impact of technology in the workplace. In terms of policy responses, we distinguish between worker preferences for job loss compensation, retraining and distinct measures of ‘technological protectionism’. Using survey data from Spain and innovative measures of these concepts, our findings reveal that concern about job substitution is modestly correlated with support for some redistribution policies. By contrast, both technostress and general concerns about the impact of technology significantly increase support for protectionist policies but not redistribution. These results contribute to understanding how workers might respond to the labour market effects of new technologies such as artificial intelligence.

Foraging Activity and Preference of Pollen Sources by Stingless Bee, Heterotrigona itama in Tropical Lowland Forest of Terengganu

Stingless bees (Hymenoptera: Apidae: Meliponini) are a highly diversified group of eusocial corbiculate bees distributed in tropical and subtropical areas. However, studies on the relation of stingless bee activeness with environmental parameters and pollen source preference are very limited particularly from the lowland forest of East Coast Peninsular Malaysia. Hence, this study aimed to determine the relationship between stingless bee, Heterotrigona itama foraging activity with environmental factors (temperature, humidity, and light intensity) and preference of floral sources in a meliponiary of Marang, Terengganu. The foraging activities of five healthy colonies of H. itama were observed from 0700 to 1700 hours on hot sunny days for eight months of study period (August 2020 – September 2021). The foraging activity was enumerated using camera recording for 10 minutes at one-hour intervals (0700-1700 hours). In this study, the peak time for H. itama to go forage was observed at 0900 until 1100 hours in the early morning and declined rapidly from 1100 until 1700 hours. October 2020 recorded the highest activeness of stingless bees, followed by August 2021 and September 2021. There was a significant difference in the interaction of stingless bee activeness between time and months [F67,424 = 3.498, p<0.05]. However, temperature, humidity and light intensity did not significantly influence the activeness of stingless bees. Acacia mangium was the most frequent pollen grain collected by H. itama, followed by Melastoma malabathricum and other pollen types were considered minor pollen types (<15%). Findings from this study can help beekeepers to understand the foraging behaviour of stingless bee colonies and the preference of the available pollen resources for sustainable meliponiculture management practice.

PSX-30 Drinking preferences of natural sources of brackish groundwater by yearling goats and sheep

PSX-30 Drinking preferences of natural sources of brackish groundwater by yearling goats and sheep

Pregnancy and Postpartum Experiences in Chicago Neighborhoods With Increased Adverse Maternal Outcomes: A Qualitative Study

Abstract: Background: Black birthing people are three to four times more likely to die from pregnancy-related causes than White birthing people. Objective: We aimed to better understand the pregnancy and postpartum experiences with health care, support, and maternal morbidity and mortality (MMM) of Black pregnant and parenting people living in neighborhoods with increased rates of MMM in Chicago, Illinois. Methods: This was a rapid qualitative analysis in Chicago, Illinois based on principles of community-based participa-tory research. Community partners recruited Black pregnant and parenting individuals living in neighborhoods with higher rates of MMM. Four focus groups from February 2021 to October 2021 were led by community health workers and covered pregnancy and postpartum experiences. Transcripts were deductively and inductively coded by paired-analyst teams and thematically analyzed. Results: This study included 31 participants from eight neighborhoods. Key themes related to pregnancy and the postpartum period included the: (1) a need for social and mental health support during and after pregnancy, (2) a preference for multiple sources of health information, (3) a need for strengthened connection with medical providers and health care systems, (4) a lack of clarity regarding MMM and the postpartum period, and (5) a difference in language between patients and health care providers. Conclusions: Further research and interventions are needed to evaluate how to best support pregnant and postpartum people, to implement patient-centered language when communicating about pregnancy and postpartum complications, and to demonstrate investment by health care workers in Black birthing people. Crucial to further research and interventions is communication with and input from communities most affected by MMM.

Tissue specific responses to oxidative fuel source preference during heat stress in lactating dairy cows

Prolonged exposure to high environmental temperatures results in an accumulated heat load that induces a heat stress (HS) response in dairy cattle. Heat stress compromises dairy farm profitability by reducing milk yield, altering milk composition, and hindering reproductive performance. The ability to alternate between carbohydrate and lipid sources for energy production is termed metabolic flexibility (Met Flex). The objective of this study was to evaluate the Met Flex of mammary, muscle, and liver tissue in lactating dairy cows under HS and thermoneutral (TN) conditions. Sixteen Holstein cows were assigned to 1 of 2 treatment groups: pair feeding in a TN environment (PFTN) or HS. All cows experienced a 4 d TN period with ad libitum intake followed by a 4 d treatment period. Heat stress cows were exposed to a temperature humidity index (THI) ranging from 76 to 80 and the PFTN cows were exposed to a THI of 64. Milk production and health data were recorded twice daily. Semitendinosus biopsies were obtained on d 4 of each period and post-mortem mammary and liver samples were obtained on d 4 of period 2. All tissue samples were assayed for Met Flex. Activity of mitochondrial (Mit) enzymes were assessed in skeletal muscle only. Four d of HS decreased milk yield, altered milk composition, and increased respiration rate and rectal temperatures. No differences in Met Flex were observed in mammary or liver tissue during period 2. However, HS, but not PFTN conditions, lowered Met Flex of skeletal muscle by 18.3% when compared with TN ad libitum feed intake conditions of period 1. No treatment differences were observed in skeletal muscle Mit enzyme activity indicating the decrease in Met Flex occurred independently of changes in Mit function. The reduction in Met Flex of skeletal muscle during HS may contribute to reduced milk yield and warrants further investigation.

How Chinese parents of children with autism spectrum disorder seek orienting information? An exploration of information source horizons, preference criteria, and information-seeking pathways

How Chinese parents of children with autism spectrum disorder seek orienting information? An exploration of information source horizons, preference criteria, and information-seeking pathways

Developing environmental sustainability policy – How financing and subsidies are influencing green innovation in mineral extraction industries in China

Mineral extraction is regarded as a pollution-intensive industry and is confronted with multiple environmental sustainability challenges. This issue poses an existential crisis for mineral extraction due to continued global pressure to adopt more sustainable practices in their functioning. Despite its importance, there is a notable gap in the literature regarding how these companies encounter financial challenges, particularly in the context of high-risk, long development cycles, and the unique double externalities associated with green innovation. This research, leveraging panel data from 2016 to 2023, aims to fill this gap by examining whether Chinese mineral extraction companies demonstrate distinct preferences for specific financing sources and by evaluating the role of government in facilitating their green innovation activities. Our findings indicate that such companies utilize a mix of internal and external financing to support their green innovation projects. It is observed that the influence of external finances channels, namely government subsidies, equity financing and debt financing, on green innovation progressively weakens, a conclusion supported by multiple robustness checks. Furthermore, the study highlights the crucial role of government subsidies in motivating publicly listed companies to enhance their green innovation activities through debt and equity financing, thereby contributing to a more equitable and sustainable development paradigm in the Global South.

Barriers and facilitators of help-seeking for eating, weight, and shape concerns among college students

Objective: Prevalence of disordered eating among college students is concerning, but professional help-seeking rates are low. This study examined barriers and facilitators of help-seeking for eating, weight, and shape concerns in this population. Participants: A non-clinical sample of undergraduates (N = 134; 64.7% females; 63.9% White; 61.7% freshman) were recruited from a research pool. Methods: Participants reported on help-seeking barriers, facilitators, intentions, and behaviors, as well as disordered eating, anxiety, and depression. Results: Commonly endorsed facilitators of help-seeking for disordered eating included desire to get better and other mental health issues. Commonly endorsed barriers highlighted themes of self-reliance. Recent and lifetime help-seeking behaviors suggested preferences for informal sources of help. Greater disordered eating predicted more endorsed facilitators of help-seeking, whereas greater depression predicted more endorsed barriers. Conclusion: Findings—highlighting self-reliance and preferences for informal sources of help—can facilitate efforts to better serve students who may be experiencing disordered eating.

Role of multiple energy sources under carbon neturality goals, income and energy consumption in transition economies: A joint case study between China and Uzbekistan

This study critically reviews policies addressing the role of multiple energy sources in achieving carbon neutrality goals, with a focus on income and energy consumption in transition economies, specifically China and Uzbekistan. As both nations undergo significant economic transitions, their energy consumption patterns are evolving in response to modernization and policy changes. Utilizing data from 2012 to 2022, this study examines the consumption of various energy sources, including coal, wood, electricity, and liquefied natural gas (LNG), within the context of these countries' carbon neutrality objectives. Our findings reveal that income levels significantly influence energy consumption behaviors, with low- and high-income households in both China and Uzbekistan exhibiting distinct preferences for energy sources. The study integrates social survey data, economic variables, and policy analysis to explore how energy consumption is shaped by income disparities, fluctuating prices, and environmental goals. By drawing on historical contexts and previous scholarly works, this research provides a comprehensive understanding of the complex interplay between income, energy use, and policy in transition economies. The findings offer valuable insights for policymakers aiming to develop sustainable energy strategies that align with carbon neutrality goals while addressing the unique challenges of income disparity and energy consumption in China and Uzbekistan.

Yeast9: a consensus genome-scale metabolic model for S. cerevisiae curated by the community

Genome-scale metabolic models (GEMs) can facilitate metabolism-focused multi-omics integrative analysis. Since Yeast8, the yeast-GEM of Saccharomyces cerevisiae, published in 2019, has been continuously updated by the community. This has increased the quality and scope of the model, culminating now in Yeast9. To evaluate its predictive performance, we generated 163 condition-specific GEMs constrained by single-cell transcriptomics from osmotic pressure or reference conditions. Comparative flux analysis showed that yeast adapting to high osmotic pressure benefits from upregulating fluxes through central carbon metabolism. Furthermore, combining Yeast9 with proteomics revealed metabolic rewiring underlying its preference for nitrogen sources. Lastly, we created strain-specific GEMs (ssGEMs) constrained by transcriptomics for 1229 mutant strains. Well able to predict the strains’ growth rates, fluxomics from those large-scale ssGEMs outperformed transcriptomics in predicting functional categories for all studied genes in machine learning models. Based on those findings we anticipate that Yeast9 will continue to empower systems biology studies of yeast metabolism.

Emergency Department Versus Primary Care Use: A Patient Perspective.

When faced with an acute illness, patients routinely make the decision of whether to present to their primary care physician (PCP) or the emergency department (ED). While the ED is known to be a high-cost component of the health care system, many ED visits include nonurgent ailments that could easily be treated within the medical home/primary care office. Particularly for patients who have an established PCP, the factors driving a preference for ED use remain poorly understood. The purpose of this study was to better understand patient motivation for visiting the ED rather than the PCP office. This observational study aimed to take a qualitative look at the patient population using a health system ED in the city of Wilkes Barre, PA, from December 2021 to March 2022. We conducted 30 interviews of patients who recently visited the ED and analyzed the responses for recurring themes. Major themes included the benefit of the PCP-patient relationship, patients' preference for multiple sources of medical guidance, patients' subjectively justifying their symptoms as emergent, seeking emergent care despite perception of higher cost, and factoring in time spent at a health care facility waiting for answers. This study contributes to further understanding of the values that drive ED use by using patient voice as a powerful tool to understand communities and local trends, which will allow health care systems to adapt and personalize protocols to their specific population.

Exploring Water Source Preferences and Agricultural Water Use in Rural Communities in the Changing Climate in Yobe State

In the face of a changing climate, rural communities in Yobe State, Nigeria, are experiencing increased water scarcity, impacting agricultural productivity and livelihoods. Despite the abundance of studies on rural water use, gaps remain in understanding the interplay between economic factors, traditions, and agricultural practices in shaping these preferences and utilization. Therefore, this study investigates water source preferences and agricultural water use among rural households in Yobe State, examining the implications of climate change on these dynamics. A mixed-methods approach combining surveys, interviews, and focus groups was employed to collect data from 300 rural households. Statistical Analysis, such as logit, and multinomial regressions were used for the data analysis. Results show that rural households prefer traditional water sources like rivers and wells over modern sources like boreholes and piped water. However, climate change has altered the reliability and quality of these traditional sources, forcing households to adapt their water use strategies. The study reveals a significant shift towards groundwater use for irrigation, increasing the risk of over-extraction and land degradation. The findings highlight the need for climate-resilient water management strategies, improved water infrastructure, and sustainable agricultural practices to ensure food security and livelihood resilience in rural Yobe State. This research contributes to understanding the complex relationships between water sources, agricultural water use, and climate change in rural communities, informing policy and interventions to support climate adaptation and sustainable development.

Inequitable access to mental healthcare for socially excluded adolescents.

Adolescence is a critical period for mental health and social exclusion, a key social determinant of mental health. Early intervention approaches are key to mitigating the impact of mental ill-health during adolescence, however social exclusion can create additional barriers to accessing care. We aimed to better understand help-seeking experiences of adolescents facing co-occurring social exclusion and mental ill-health, including sources of support, barriers and preferences for service provision. Cross-sectional data were analysed, from the 2022 Mission Australia Youth Survey (N = 18,800). Adolescents aged 15 to 19 years were recruited from around Australia, through schools, community organisations and digital platforms. Indices of four domains of social exclusion (housing, finances, relational and education/employment) were created using existing Youth Survey variables, and supplemented with demographic characteristics, psychological distress and help-seeking behaviours (perceived need, mental health supports, barriers to access and preferences). Relationships between social exclusion domains, mental health concerns and help-seeking behaviours were explored using logistic regression models. A total of 9,743 young people reported having needed mental health support, yet only 58.1% reportedly sought support (n = 5,565). Social exclusion domains were associated with different help-seeking behaviours: housing challenges with higher help-seeking (OR = 1.28; 95% CI [1.15, 1.42]); relational difficulties and edu-employment issues with lower (OR = 0.75; 95% CI [0.68, 0.83] and OR = 0.82; 95% CI [0.75, 0.89]). Stigma, confidentiality concerns, cost and not knowing where to seek help were common barriers to help-seeking; those experiencing social exclusion more likely to report these. Participants reported a strong preference for face-to-face support. This study highlights the additional needs and challenges faced by adolescents dealing with both social exclusion and mental ill-health. With greater barriers to help-seeking, concerted efforts are needed to reduce stigma, improve mental health literacy and increase access to trusted information sources. Further initiatives should focus on structural factors that socially exclude young people and exacerbate inequitable access to mental healthcare.

An inclusive study to elucidation the heavy metals-derived ecological risk nexus with antibiotic resistome functional shape of niche microbial community and their carbon substrate utilization ability in serpentine soil

Heavy metals (HMs) contained terrestrial ecosystems are often significantly display the antibiotic resistome in the pristine area due to increasing pressure from anthropogenic activity, is complex and emerging research interest. This study investigated that impact of chromium (Cr), nickel (Ni), cobalt (Co) concentrations in serpentine soil on the induction of antibiotic resistance genes and antimicrobial resistance within the native bacterial community as well as demonstrated their metabolic fingerprint. The full-length 16S-rRNA amplicon sequencing observed an increased abundance of Firmicutes, Actinobacteriota, and Acidobacteriota in serpentine soil. The microbial community in serpentine soil displayed varying preferences for different carbon sources, with some, such as carbohydrates and carboxylic acids, being consistently favored. Notably, 27 potential antibiotic resistance opportunistic bacterial genera have been identified in different serpentine soils. Among these, Lapillicoccus, Rubrobacter, Lacibacter, Chloroplast, Nitrospira, Rokubacteriales, Acinetobacter, Pseudomonas were significantly enriched in high and medium HMs concentrated serpentine soil samples. Functional profiling results illustrated that vancomycin resistance pathways were prevalent across all groups. Additionally, beta-lactamase, aminoglycoside, tetracycline, and vancomycin resistance involving specific bio-maker genes (ampC, penP, OXA, aacA, strB, hyg, aph, tet(A/B), otr(C), tet(M/O/Q), van(A/B/D), and vanJ) were the most abundant and enriched in the HMs-contaminated serpentine soil. Overall, this study highlighted that heavy-metal enriched serpentine soil is potential to support the proliferation of bacterial antibiotic resistance in native microbiome, and might able to spread antibiotic resistance to surrounding environment.