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Schreuder, Hans T.; Gregoire, T. G.; Weyer, J. P.

doi:10.1023/a:1006316418865

Cited by 82 publications

(25 citation statements)

References 3 publications

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“…This small proportion of nonresponse at CRLA does not provide a large enough Our models did not account for the design weights associated with the GRTS sample design to adjust the model-based estimators. Since equiprobable samples were drawn within each park with a probabilistic method unrelated to the outcome of interest, the design can be ignored in a model-based approach [40]. However, nonresponse error due to inaccessible sites may impact inference if the mean of the outcome of interest for accessible sites is significantly different from the mean at inaccessible sites.…”

Section: Cwdmentioning

confidence: 99%

Whitebark Pine in Crater Lake and Lassen Volcanic National Parks: Assessment of Stand Structure and Condition in a Management and Conservation Perspective

Jackson

Smith

Nesmith

et al. 2019

Forests

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Whitebark pine (Pinus albicaulis. Engelm.) is vulnerable to a number of threats including an introduced pathogen (Cronartium ribicola J.C. Fisch.), epidemic levels of native mountain pine beetle (Dendroctonus ponderosae Hopkins), fire suppression, and climate change. To describe the structure of whitebark pine populations in two national parks in the southern Cascades (Crater Lake, Oregon, USA (CRLA) and Lassen Volcanic, California, USA (LAVO) National Parks), we surveyed trees in 30 × 50 × 50 m plots in both parks. We used these plots to describe the extent of white pine blister rust (the disease caused by Cronartium ribicola), mountain pine beetle occurrence, and to elucidate factors influencing the presence of pests and pathogens, cone production, and canopy kill. In each plot, we recorded data related to tree health, including symptoms of blister rust and mountain pine beetle, and reproductive vigor (cone production). In both parks, encroachment from other species, particularly mountain hemlock (Tsuga mertensiana (Bong.) Carrière), was negatively associated with cone production. In CRLA, water stress was a good predictor of blister rust infection and cone production. For CRLA and LAVO, the presence of mountain pine beetle and blister rust was associated with higher canopy kill for whitebark pine. Lastly, we found evidence for a pest-pathogen interaction, mountain pine beetle attack was greater for trees that showed symptoms of blister rust infection in CRLA. Our results indicate that whitebark pine populations in the southern Cascade Range are experiencing moderate levels of blister rust infection compared with other sites across the species range, and that competition from shade-tolerant species may result in an additional threat to whitebark pine in both parks. We present our findings in the context of park management and situate them in range-wide and regional conservation strategies aimed at the protection and restoration of a declining species.

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Section: Cwdmentioning

confidence: 99%

Whitebark Pine in Crater Lake and Lassen Volcanic National Parks: Assessment of Stand Structure and Condition in a Management and Conservation Perspective

Jackson

Smith

Nesmith

et al. 2019

Forests

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“…There are some limitations in the study. As noted by Schreuder et al (2001) , purposive sampling does not provide a probabilistic or representative sample. Consequently, while assumptions for the NHS as a whole may be made, the research can only be applied to the geographical area identified for the sample.…”

Section: Discussionmentioning

confidence: 99%

An evaluation of the management of offensive waste from the National Health Service in England: A case study approach

Roddis

Tudor

2020

Waste Manag Res

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In the UK, the majority of offensive waste is disposed of at landfills. However, producers have a duty of care under the Waste Hierarchy to divert waste away from landfill. Using case studies from the East of England, the East Midlands and West Midlands in England, this study sought to quantify the waste arisings disposed of to landfill and to understand the reasons why. The findings show that offensive waste arisings, treatment method and costs varied by region, only a fraction of the waste disposed of to landfill in the East of England, compared with the majority being disposed of to landfill in the East Midlands and West Midlands. Despite the financial implications of landfilling being the lowest cost per tonne option, the key barriers to moving away from disposal to landfill was a lack of available alternatives, and it being the only option offered by the waste contractor.

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“…It is a nonprobability data collection technique used to study population subgroups and identify and select informants who are knowledgeable about or have experience with the subject area of interest. The method is also suitable for making comparisons between cases (Etikan et al 2016; Palinkas et al 2015; Ford et al 2009; Teddlie and Yu 2007; Guarte and Barrios 2006; Schreuder et al 2001). It is appropriate for qualitative and quantitative analyses (Tongco and Dolores 2007).…”

Section: Methodsmentioning

confidence: 99%

College Students and Nature: Differing Thoughts of Fear, Danger, Disconnection, and Loathing

Taylor

2019

Environmental Management

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Despite the existence of a robust body of research that investigates human–nature connections, few scholars have examined what people tend to ponder when they think of nature. The objective of the study is to find out how college and university students think about nature. The study also seeks to identify which factors are most significant in influencing students’ thoughts about nature. This paper analyzes racial, gender, class, and academic differences in the way college students think about nature. The study of 287 American students found that respondents thought about a wide range of concepts and ideas when they contemplate nature. This article focuses on the demographic differences in thoughts about fear, danger, and loathing. This set of ideas has been the subject of scholarly research, and the findings presented herein contribute to this body of scholarship. The paper discusses both descriptive and multivariate techniques that are used to explore the topic. The study found that white students are less likely than racial/ethnic minorities to think about disconnection, predators, getting lost, loathsome or hateful places, fear, and danger when they think of nature. However, the results also show that it would be inaccurate to describe racial/ethnic minorities as universally fearful of and disconnected from nature. Moreover, the paper demonstrates that race is not the only explanatory variable that has significant impacts in multivariate models—the student’s academic interest has significant impacts on thoughts about natural hazards, disconnection, predators, human-made hazards, and loathsome or hateful places. Gender, age, parental education, and first-generation college attendance also has significant impacts on the dependent variables.

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Untitled

Cited by 82 publications

References 3 publications

Whitebark Pine in Crater Lake and Lassen Volcanic National Parks: Assessment of Stand Structure and Condition in a Management and Conservation Perspective

Whitebark Pine in Crater Lake and Lassen Volcanic National Parks: Assessment of Stand Structure and Condition in a Management and Conservation Perspective

An evaluation of the management of offensive waste from the National Health Service in England: A case study approach

College Students and Nature: Differing Thoughts of Fear, Danger, Disconnection, and Loathing

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