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690,087 result(s) for "May, Emily"
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Wuthering Heights
On the wild and lonely Yorkshire moors a tragic love story unfolds as Catherine Earnshaw and Heathcliff fall in love. But Cathy marries another man, Edgar Linton, and breaks Heathcliff's heart. Years later, he returns to Wuthering Heights and takes his revenge on the Linton family.
Agricultural margins could enhance landscape connectivity for pollinating insects across the Central Valley of California, U.S.A
One of the defining features of the Anthropocene is eroding ecosystem services, decreases in biodiversity, and overall reductions in the abundance of once-common organisms, including many insects that play innumerable roles in natural communities and agricultural systems that support human society. It is now clear that the preservation of insects cannot rely solely on the legal protection of natural areas far removed from the densest areas of human habitation. Instead, a critical challenge moving forward is to intelligently manage areas that include intensively farmed landscapes, such as the Central Valley of California. Here we attempt to meet this challenge with a tool for modeling landscape connectivity for insects (with pollinators in particular in mind) that builds on available information including lethality of pesticides and expert opinion on insect movement. Despite the massive fragmentation of the Central Valley, we find that connectivity is possible, especially utilizing the restoration or improvement of agricultural margins, which (in their summed area) exceed natural areas. Our modeling approach is flexible and can be used to address a wide range of questions regarding both changes in land cover as well as changes in pesticide application rates. Finally, we highlight key steps that could be taken moving forward and the great many knowledge gaps that could be addressed in the field to improve future iterations of our modeling approach.
Native wildflower plantings support wild bee abundance and diversity in agricultural landscapes across the United States
Global trends in pollinator-dependent crops have raised awareness of the need to support managed and wild bee populations to ensure sustainable crop production. Provision of sufficient forage resources is a key element for promoting bee populations within human impacted landscapes, particularly those in agricultural lands where demand for pollination service is high and land use and management practices have reduced available flowering resources. Recent government incentives in North America and Europe support the planting of wildflowers to benefit pollinators; surprisingly, in North America there has been almost no rigorous testing of the performance of wildflower mixes, or their ability to support wild bee abundance and diversity. We tested different wildflower mixes in a spatially replicated, multiyear study in three regions of North America where production of pollinator-dependent crops is high: Florida, Michigan, and California. In each region, we quantified flowering among wildflower mixes composed of annual and perennial species, and with high and low relative diversity. We measured the abundance and species richness of wild bees, honey bees, and syrphid flies at each mix over two seasons. In each region, some but not all wildflower mixes provided significantly greater floral display area than unmanaged weedy control plots. Mixes also attracted greater abundance and richness of wild bees, although the identity of best mixes varied among regions. By partitioning floral display size from mix identity we show the importance of display size for attracting abundant and diverse wild bees. Season-long monitoring also revealed that designing mixes to provide continuous bloom throughout the growing season is critical to supporting the greatest pollinator species richness. Contrary to expectation, perennials bloomed in their first season, and complementarity in attraction of pollinators among annuals and perennials suggests that inclusion of functionally diverse species may provide the greatest benefit. Wildflower mixes may be particularly important for providing resources for some taxa, such as bumble bees, which are known to be in decline in several regions of North America. No mix consistently attained the full diversity that was planted. Further study is needed on how to achieve the desired floral display and diversity from seed mixes.
The Profile of Moods States and Athletic Performance: A Meta-Analysis of Published Studies
Researchers have extensively examined and reviewed the relationship of the profile of mood states (POMS) with sport performance since the 1970s. Two decades have passed since the last POMS quantitative review. Our overall objective was to quantify the POMS research with competitive athletes with a prospective measured POMS and a sport performance outcome in the published literature. Additionally, we tested potential moderators of the mental health model (i.e., sport duration, type, and skill) with meta-analytic techniques while considering potential risk bias across study sources. Based on a systematic review, the articles were found using EBSCO and comparing these articles with extensive past POMS in sport and exercise bibliographies. Search terms included profile of mood states (POMS) or iceberg profile or the mental health model with sport and performance or sports performance. For selection, articles must have reported data on competitive athletes, an athletic performance outcome, and a valid form of the POMS measured prospectively. After screening more than 600 articles for inclusion, 25 articles provided sufficient data for effect size calculations. The included articles spanned from 1975 to 2011, with 1497 unique participants. Hedges’ g values were generally small for the six POMS scales: tension (−0.21), depression (−0.43), anger (−0.08), vigor (0.38), fatigue (−0.13), and confusion (−0.41). However, the total mood disturbance (TMD) score effect size was medium in magnitude at −0.53. When corrected for potential publication bias, the effect size values increased in magnitude for tension (−0.47), depression (−0.64), vigor (0.44), fatigue (−0.34), and TMD (−0.84). Moderator analyses for Terry’s (1995) propositions and for risk of bias across studies, statistically, resulted in few differences based on conventional statistical significance (p < 0.05). Measured before performance, most of the POMS scales and TMD are reliable predictors of sport performance in competitive athletes across a wide variety of sports and athletic performance outcomes. Morgan’s (1980, 1985) mental health model or iceberg profile minus anger is still a viable method for understanding and improving athletic performances.
Investigating Stoichiometric Controls of Nutrient Recycling in Rivers Using the Threespine Stickleback (Gasterosteus aculeatus)
In freshwater ecosystems, fish play a critical role in regulating the standing stock and turnover rates of biologically important elements such as nitrogen (N) and phosphorus (P). They do so by assimilating dietary nutrients, storing them, and recycling a subset as liquid (excreta) or solid (egesta) waste. The elemental composition of fish diets, bodies and waste varies considerably both within and between species. However, the mechanistic link between intraspecific variation in particular traits, such as bone investment, and variation in waste elemental composition and release rates remains poorly understood. Using the framework of Ecological Stoichiometry, we investigate how phenotypic traits impact nutrient storage and recycling. The threespine stickleback serves as an ideal model because it has undergone significant phenotypic diversification following its relatively recent colonisation of freshwater environments. Specifically, we examine variation in P‐rich bony armour along a river continuum, where estuarine sticklebacks are typically heavily armoured (fully plated), and freshwater sticklebacks have less armour (low plated). We collected sticklebacks from five sites along the Sooke River, ranging from the estuary to the upper reaches, and measured their excretion rates in the field. We quantified the P content of their bodies, diet, egesta and excreted wastes, and the N:P of their bodies and excreta. Our results revealed substantial variation in body P content (2.2%–5.9%), with fully plated fish exhibiting higher body %P and lower body N:P. Dietary P was highly variable, with fully plated fish showing marginally higher dietary %P. Notably, P excretion rates were positively correlated with body %P but not diet %P, suggesting that contrary to predictions, bone content may decrease P demand. This study demonstrates that differences in stickleback bone investment have led to meaningful differences in nutrient storage and recycling. We determine how intraspecific phenotypic variation relates to controls on vertebrate nutrient cycling. We used the threespine stickleback as a model, and ecological stoichiometry as a framework. We found a large portion of variation in nitrogen and phosphorus content of stickleback bodies and wastes, and we find a link between vertebrate traits and excretion that could be explained by variation in elemental homeostasis.
How Does the Neighborhood \Come through the Door?\ Concentrated Disadvantage, Residential Instability, and the Home Environment for Preschoolers
Living in a disadvantaged neighborhood is associated with heightened risk for poor school readiness and health outcomes in early childhood, and the home environment is thought to be a primary mechanism by which neighborhood context impacts preschoolers. This study examined the effects of neighborhood concentrated disadvantage and neighborhood residential instability on the home physical environment and home learning environment for preschoolers in economically disadvantaged families (N = 187). Using structural equation modeling, mothers' perceived neighborhood disorder and depressive symptoms were examined as mechanisms by which neighborhood context \"comes through the door.\" Mothers' neighborhood social embeddedness was also explored as a protective factor. Results showed that concentrated disadvantage was negatively associated with the quality of the home physical environment, and residential instability was negatively associated with the quality of the home learning environment. Concentrated disadvantage had an indirect effect on the home learning environment through mothers' perceived neighborhood disorder and depressive symptoms. The effects of concentrated disadvantage on the home environment were buffered by mothers' neighborhood social embeddedness. Study findings advance understanding of socioeconomic- and place-based disparities in developmental outcomes and identify potential targets for interventions aimed at lessening effects of neighborhood disadvantage on families with young children.
Life stage and taxonomy the most important factors determining vertebrate stoichiometry: A meta‐analysis
Whole‐body elemental composition is a key trait for determining how organisms influence their ecosystems. Using mass‐balance, ecological stoichiometry predicts that animals with higher concentrations of element X will selectively retain more X and will recycle less X in their waste than animals with lower X concentrations. These animals will also store high quantities of X during their lives and after their deaths (prior to full decomposition). Vertebrates may uniquely impact nutrient cycling because they store high quantities of phosphorus (P) in their bones. However, vertebrates have diverse body forms and invest variably in bone. Current analyses of vertebrate elemental content predominately evaluate fishes, typically neglecting other vertebrates and leaving much of the diversity unexplored. We performed a systematic review and identified 179 measurements of whole‐body percent phosphorus (%P), percent nitrogen (%N), and N to P ratio (N:P) from 129 unique species of non‐fish vertebrates (amphibians: 39 species; reptiles: 19 species; birds: 27 species; mammals: 46 species). We found that %P (mean: 1.94%; SD [standard deviation] = 0.77) and N:P (mean: 12.52) varied with taxonomy and life stage, while %N (mean: 10.51%; SD = 3.25) varied primarily with taxonomy. Habitat, diet, and size had small and inconsistent effects in different groups. Our study highlights two research gaps. Life stage, which is frequently neglected in stoichiometric studies, is an important factor determining vertebrate %P. Furthermore, amphibians dominate our dataset, while other vertebrate taxa are poorly represented in the current literature. Further research into these neglected vertebrate taxa is essential. We performed a systematic review evaluating how vertebrates vary in %N, %P, and N:P. We found that taxonomy and life stage were the best predictors overall.
A Contextual Exploration of Parental Monitoring in Latinx Parent-Adolescent Dyads
Parental monitoring of youth daily activities is a salient parenting strategy that has important implications for adolescents’ adjustment and safety. Limited research, however, has examined positive contextual factors that can facilitate parental monitoring behaviors in Latinx families. We examined parental warmth and neighborhood social processes (i.e., social cohesion, informal social control) as predictors of parental monitoring dimensions. Surveys were completed by 62 Latinx parent-adolescent dyads in a small, predominantly African American northeastern U.S. city. Results of structural equation modeling indicated positive associations between parental warmth and most dimensions of parental monitoring for parent and adolescent reports. For parent report, neighborhood social cohesion was positively associated with parental knowledge and youth disclosure; neighborhood informal social control was negatively associated with youth disclosure. Gender differences also emerged: parental warmth was positively associated with parental control for boys but not girls, and the negative association between informal social control and youth disclosure was significant only for boys. Findings suggest that parental monitoring often occurs in the context of a warm parent-child relationship. Parents’ experiences of their neighborhoods might have a stronger impact on parental monitoring strategies than adolescents’ experiences. Implications for future research include conceptualizing monitoring as multidimensional, assessing both parent and adolescent reports, and recruiting diverse Latinx ethnic groups and extended family members. Practitioners should be aware of family and neighborhood relational contexts when facilitating parenting practices in Latinx families. Program providers should offer culturally relevant programs that emphasize strengthening the family environment and parenting in addition to adolescent development. Highlights Examined multiple dimensions of parental monitoring in Latinx parent-youth dyads. Expanded understanding of Latinx parenting in non-traditional settlement areas. Highlighted the importance of using parental warmth and parental monitoring together. Parental monitoring strategies varied based on neighborhood social processes. The association between warmth and monitoring and the association between neighborhood and monitoring varied by gender.
Hope and Abstinence Self-Efficacy: Positive Predictors of Negative Affect in Substance Abuse Recovery
Goal-oriented thinking, including hope and self-efficacy, might play a constructive and integral role in the substance abuse recovery process, although such an effect may differ by race. The current study investigated hope and self-efficacy, specifically abstinence self-efficacy, as predictors of negative affect (i.e. depression and anxiety) in a longitudinal sample of men and women in substance abuse recovery who lived in sober living homes. We found hope agency and self-efficacy were related but not identical constructs; hope agency and self-efficacy predicted depressive and anxiety symptoms for individuals in recovery, yet these relationships were moderated by race. Theoretical and clinical implications for promoting positive affect among individuals in substance abuse recovery are discussed.