NobleBlocks

University of Northern British Columbia

UniversityPrince George, Canada

Research output, citation impact, and the most-cited recent papers from University of Northern British Columbia (Canada). Aggregated across the NobleBlocks index of 300M+ scholarly works.

Total works
12.0K
Citations
348.0K
h-index
213
i10-index
6.2K
Also known as
University of Northern British Columbia

Top-cited papers from University of Northern British Columbia

A communal catalogue reveals Earth’s multiscale microbial diversity
Luke Thompson, Jon G. Sanders, Daniel McDonald, Amnon Amir +4 more
2017· Nature2.9Kdoi:10.1038/nature24621

Our growing awareness of the microbial world's importance and diversity contrasts starkly with our limited understanding of its fundamental structure. Despite recent advances in DNA sequencing, a lack of standardized protocols and common analytical frameworks impedes comparisons among studies, hindering the development of global inferences about microbial life on Earth. Here we present a meta-analysis of microbial community samples collected by hundreds of researchers for the Earth Microbiome Project. Coordinated protocols and new analytical methods, particularly the use of exact sequences instead of clustered operational taxonomic units, enable bacterial and archaeal ribosomal RNA gene sequences to be followed across multiple studies and allow us to explore patterns of diversity at an unprecedented scale. The result is both a reference database giving global context to DNA sequence data and a framework for incorporating data from future studies, fostering increasingly complete characterization of Earth's microbial diversity.

From tropics to tundra: Global convergence in plant functioning
Peter B. Reich, Michael B. Walters, David S. Ellsworth
1997· Proceedings of the National Academy of Sciences2.4Kdoi:10.1073/pnas.94.25.13730

Despite striking differences in climate, soils, and evolutionary history among diverse biomes ranging from tropical and temperate forests to alpine tundra and desert, we found similar interspecific relationships among leaf structure and function and plant growth in all biomes. Our results thus demonstrate convergent evolution and global generality in plant functioning, despite the enormous diversity of plant species and biomes. For 280 plant species from two global data sets, we found that potential carbon gain (photosynthesis) and carbon loss (respiration) increase in similar proportion with decreasing leaf life-span, increasing leaf nitrogen concentration, and increasing leaf surface area-to-mass ratio. Productivity of individual plants and of leaves in vegetation canopies also changes in constant proportion to leaf life-span and surface area-to-mass ratio. These global plant functional relationships have significant implications for global scale modeling of vegetation-atmosphere CO2 exchange.

Sixteen years of change in the global terrestrial human footprint and implications for biodiversity conservation
Oscar Venter, Eric W. Sanderson, Ainhoa Magrach, James R. Allan +4 more
2016· Nature Communications1.8Kdoi:10.1038/ncomms12558

Human pressures on the environment are changing spatially and temporally, with profound implications for the planet's biodiversity and human economies. Here we use recently available data on infrastructure, land cover and human access into natural areas to construct a globally standardized measure of the cumulative human footprint on the terrestrial environment at 1 km(2) resolution from 1993 to 2009. We note that while the human population has increased by 23% and the world economy has grown 153%, the human footprint has increased by just 9%. Still, 75% the planet's land surface is experiencing measurable human pressures. Moreover, pressures are perversely intense, widespread and rapidly intensifying in places with high biodiversity. Encouragingly, we discover decreases in environmental pressures in the wealthiest countries and those with strong control of corruption. Clearly the human footprint on Earth is changing, yet there are still opportunities for conservation gains.

Area-based conservation in the twenty-first century
Sean Maxwell, Victor Cazalis, Nigel Dudley, Michael Hoffmann +4 more
2020· Nature941doi:10.1038/s41586-020-2773-z

Humanity will soon define a new era for nature-one that seeks to transform decades of underwhelming responses to the global biodiversity crisis. Area-based conservation efforts, which include both protected areas and other effective area-based conservation measures, are likely to extend and diversify. However, persistent shortfalls in ecological representation and management effectiveness diminish the potential role of area-based conservation in stemming biodiversity loss. Here we show how the expansion of protected areas by national governments since 2010 has had limited success in increasing the coverage across different elements of biodiversity (ecoregions, 12,056 threatened species, 'Key Biodiversity Areas' and wilderness areas) and ecosystem services (productive fisheries, and carbon services on land and sea). To be more successful after 2020, area-based conservation must contribute more effectively to meeting global biodiversity goals-ranging from preventing extinctions to retaining the most-intact ecosystems-and must better collaborate with the many Indigenous peoples, community groups and private initiatives that are central to the successful conservation of biodiversity. The long-term success of area-based conservation requires parties to the Convention on Biological Diversity to secure adequate financing, plan for climate change and make biodiversity conservation a far stronger part of land, water and sea management policies.

One-third of global protected land is under intense human pressure
Kendall R. Jones, Oscar Venter, Richard A. Fuller, James R. Allan +3 more
2018· Science914doi:10.1126/science.aap9565

In an era of massive biodiversity loss, the greatest conservation success story has been the growth of protected land globally. Protected areas are the primary defense against biodiversity loss, but extensive human activity within their boundaries can undermine this. Using the most comprehensive global map of human pressure, we show that 6 million square kilometers (32.8%) of protected land is under intense human pressure. For protected areas designated before the Convention on Biological Diversity was ratified in 1992, 55% have since experienced human pressure increases. These increases were lowest in large, strict protected areas, showing that they are potentially effective, at least in some nations. Transparent reporting on human pressure within protected areas is now critical, as are global targets aimed at efforts required to halt biodiversity loss.

A global spectral library to characterize the world's soil
Raphael A. Viscarra Rossel, Thorsten Behrens, Eyal Ben‐Dor, David J. Brown +4 more
2016· Earth-Science Reviews845doi:10.1016/j.earscirev.2016.01.012

Soil provides ecosystem services, supports human health and habitation, stores carbon and regulates emissions of greenhouse gases. Unprecedented pressures on soil from degradation and urbanization are threatening agro-ecological balances and food security. It is important that we learn more about soil to sustainably manage and preserve it for future generations. To this end, we developed and analyzed a global soil visible–near infrared (vis–NIR) spectral library. It is currently the largest and most diverse database of its kind. We show that the information encoded in the spectra can describe soil composition and be associated to land cover and its global geographic distribution, which acts as a surrogate for global climate variability. We also show the usefulness of the global spectra for predicting soil attributes such as soil organic and inorganic carbon, clay, silt, sand and iron contents, cation exchange capacity, and pH. Using wavelets to treat the spectra, which were recorded in different laboratories using different spectrometers and methods, helped to improve the spectroscopic modelling. We found that modelling a diverse set of spectra with a machine learning algorithm can find the local relationships in the data to produce accurate predictions of soil properties. The spectroscopic models that we derived are parsimonious and robust, and using them we derived a harmonized global soil attribute dataset, which might serve to facilitate research on soil at the global scale. This spectroscopic approach should help to deal with the shortage of data on soil to better understand it and to meet the growing demand for information to assess and monitor soil at scales ranging from regional to global. New contributions to the library are encouraged so that this work and our collaboration might progress to develop a dynamic and easily updatable database with better global coverage. We hope that this work will reinvigorate our community's discussion towards larger, more coordinated collaborations. We also hope that use of the database will deepen our understanding of soil so that we might sustainably manage it and extend the research outcomes of the soil, earth and environmental sciences towards applications that we have not yet dreamed of.

Global terrestrial Human Footprint maps for 1993 and 2009
Oscar Venter, Eric W. Sanderson, Ainhoa Magrach, James R. Allan +4 more
2016· Scientific Data807doi:10.1038/sdata.2016.67

Remotely-sensed and bottom-up survey information were compiled on eight variables measuring the direct and indirect human pressures on the environment globally in 1993 and 2009. This represents not only the most current information of its type, but also the first temporally-consistent set of Human Footprint maps. Data on human pressures were acquired or developed for: 1) built environments, 2) population density, 3) electric infrastructure, 4) crop lands, 5) pasture lands, 6) roads, 7) railways, and 8) navigable waterways. Pressures were then overlaid to create the standardized Human Footprint maps for all non-Antarctic land areas. A validation analysis using scored pressures from 3114×1 km(2) random sample plots revealed strong agreement with the Human Footprint maps. We anticipate that the Human Footprint maps will find a range of uses as proxies for human disturbance of natural systems. The updated maps should provide an increased understanding of the human pressures that drive macro-ecological patterns, as well as for tracking environmental change and informing conservation science and application.

The Evolution of John Mezirow's Transformative Learning Theory
Andrew Kitchenham
2008· Journal of Transformative Education794doi:10.1177/1541344608322678

This article is a review of Mezirow's transformative learning from its inception to the latest definition. The review builds on Taylor's earlier discussions, but unlike his review, this history of transformative learning relies predominantly on Mezirow's publications to authenticate the discussion with support from the extant literature. The article begins with Mezirow's explanation of the stages of transformative learning, continues with the influences on the theory, transitions into the criticisms, and concludes with a discussion of its evolution and development.

Resource Selection Functions Based on Use–Availability Data: Theoretical Motivation and Evaluation Methods
Chris J. Johnson, Scott E. Nielsen, Evelyn H. Merrill, Trent L. McDonald +1 more
2006· Journal of Wildlife Management787doi:10.2193/0022-541x(2006)70[347:rsfbou]2.0.co;2

Applications of logistic regression in a used–unused design in wildlife habitat studies often suffer from asymmetry of errors: used resource units (landscape locations) are known with certainty, whereas unused resource units might be observed to be used with greater sampling intensity. More appropriate might be to use logistic regression to estimate a resource selection function (RSF) tied to a use–availability design based on independent samples drawn from used and available resource units. We review the theoretical motivation for RSFs and show that sample “contamination” and the exponential form commonly assumed for the RSF are not concerns, contrary to recent statements by Keating and Cherry (2004; Use and interpretation of logistic regression in habitat-selection studies. Journal of Wildlife Management 68:774–789). To do this, we re-derive the use–availability likelihood and show that it can be maximized by logistic regression software. We then consider 2 case studies that illustrate our findings. For our first case study, we fit both RSFs and resource selection probability functions (RSPF) to point count data for 4 bird species with varying levels of occurrence among sample blocks. Drawing on our new derivation of the likelihood, we sample available resource units with replacement and assume overlapping distributions of used and available resource units. Irrespective of overlap, we observed approximate proportionality between predictions of a RSF and RSPF. For our second case study, we evaluate the classic use-availability design suggested by Manly et al. (2002), where availability is sampled without replacement, and we systematically introduce contamination to a sample of available units applied to RSFs for woodland caribou (Rangifer tarandus caribou). Although contamination appeared to reduce the magnitude of one RSF beta coefficient, change in magnitude exceeded sampling variation only when >20% of the available units were confirmed caribou use locations (i.e., contaminated). These empirically based simulations suggest that previously recommended sampling designs are robust to contamination. We conclude with a new validation method for evaluating predictive performance of a RSF and for assessing if the model deviates from being proportional to the probability of use of a resource unit.

Climate change and forest diseases
Rona N. Sturrock, Susan J. Frankel, A. V. Brown, Paul E. Hennon +4 more
2011· Plant Pathology732doi:10.1111/j.1365-3059.2010.02406.x

As climate changes, the effects of forest diseases on forest ecosystems will change. We review knowledge of relationships between climate variables and several forest diseases, as well as current evidence of how climate, host and pathogen interactions are responding or might respond to climate change. Many forests can be managed to both adapt to climate change and minimize the undesirable effects of expected increases in tree mortality. We discuss four types of forest and disease management tactics – monitoring, forecasting, planning and mitigation – and provide case studies of yellow‐cedar decline and sudden aspen decline to illustrate how forest diseases might be managed in the face of climate change. The uncertainties inherent to climate change effects can be diminished by conducting research, assessing risks, and linking results to forest policy, planning and decision making.

Nutrition integrates environmental responses of ungulates
Katherine L. Parker, Perry S. Barboza, Michael P. Gillingham
2009· Functional Ecology680doi:10.1111/j.1365-2435.2009.01528.x

1 Nutrition influences most aspects of animal ecology: juvenile growth rates and adult mass gain, body condition, probability of pregnancy, over-winter survival, timing of parturition, and neonatal birth mass and survival. We provide an overview among ungulates of the extent of these influences resulting from interactions among bioenergetics, foraging, and nutritional demands. 2 Body condition of an animal is the integrator of nutritional intake and demands, affecting both survival and reproduction. The deposition and mobilization of body fat and body protein vary with physiological requirements and environmental conditions as species use dietary income and body stores to integrate the profits of summer and the demands of winter. Results from our simulation model and uncertainty analysis of the influence of body mass and changes in body composition of Rangifer over winter indicate that percent body fat rather than body mass in early winter is most important in determining whether animals die, live without reproducing, or live and reproduce. Animal responses are also sensitive to rates of change in body protein. Depending on timing of calving and maternal reserves, seasonal habitats vary in their nutritional value for the production of offspring. 3 For free-ranging animals, life is a balance among numerous ecological factors, including nutritional requirements, nutritional resources to meet those demands, and intra- and inter-specific interactions. Predation effects on population demography may mask nutritional limitations of habitat. We suggest that over the long term of life histories, ungulates use seasonal strategies that minimize the maximum detriment, and that the basis for most strategies is nutritional.

Fine‐grained sediment in river systems: environmental significance and management issues
Philip N. Owens, Ramón J. Batalla, Alison Collins, Basil Gómez +4 more
2005· River Research and Applications679doi:10.1002/rra.878

Abstract Fine‐grained sediment is a natural and essential component of river systems and plays a major role in the hydrological, geomorphological and ecological functioning of rivers. In many areas of the world, the level of anthropogenic activity is such that fine‐grained sediment fluxes have been, or are being, modified at a magnitude and rate that cause profound, and sometimes irreversible, changes in the way that river systems function. This paper examines how anthropogenic activity has caused significant changes in the quantity and quality of fine‐grained sediment within river systems, using examples of: land use change in New Zealand; the effects of reservoir construction and management in different countries; the interaction between sediment dynamics and fish habitats in British Columbia, Canada; and the management of contaminated sediment in USA rivers. The paper also evaluates present programmes and initiatives for the management of fine sediment in river systems and suggests changes that are needed if management strategies are to be effective and sustainable. Copyright © 2005 John Wiley & Sons, Ltd.

Global glacier change in the 21st century: Every increase in temperature matters
David R. Rounce, Regine Hock, Fabien Maussion, Romain Hugonnet +4 more
2023· Science615doi:10.1126/science.abo1324

Glacier mass loss affects sea level rise, water resources, and natural hazards. We present global glacier projections, excluding the ice sheets, for shared socioeconomic pathways calibrated with data for each glacier. Glaciers are projected to lose 26 ± 6% (+1.5°C) to 41 ± 11% (+4°C) of their mass by 2100, relative to 2015, for global temperature change scenarios. This corresponds to 90 ± 26 to 154 ± 44 millimeters sea level equivalent and will cause 49 ± 9 to 83 ± 7% of glaciers to disappear. Mass loss is linearly related to temperature increase and thus reductions in temperature increase reduce mass loss. Based on climate pledges from the Conference of the Parties (COP26), global mean temperature is projected to increase by +2.7°C, which would lead to a sea level contribution of 115 ± 40 millimeters and cause widespread deglaciation in most mid-latitude regions by 2100.

Diverse values of nature for sustainability
Unai Pascual, Patricia Balvanera, Christopher B. Anderson, Rebecca Chaplin‐Kramer +4 more
2023· Nature607doi:10.1038/s41586-023-06406-9

Abstract Twenty-five years since foundational publications on valuing ecosystem services for human well-being 1,2 , addressing the global biodiversity crisis 3 still implies confronting barriers to incorporating nature’s diverse values into decision-making. These barriers include powerful interests supported by current norms and legal rules such as property rights, which determine whose values and which values of nature are acted on. A better understanding of how and why nature is (under)valued is more urgent than ever 4 . Notwithstanding agreements to incorporate nature’s values into actions, including the Kunming-Montreal Global Biodiversity Framework (GBF) 5 and the UN Sustainable Development Goals 6 , predominant environmental and development policies still prioritize a subset of values, particularly those linked to markets, and ignore other ways people relate to and benefit from nature 7 . Arguably, a ‘values crisis’ underpins the intertwined crises of biodiversity loss and climate change 8 , pandemic emergence 9 and socio-environmental injustices 10 . On the basis of more than 50,000 scientific publications, policy documents and Indigenous and local knowledge sources, the Intergovernmental Platform on Biodiversity and Ecosystem Services (IPBES) assessed knowledge on nature’s diverse values and valuation methods to gain insights into their role in policymaking and fuller integration into decisions 7,11 . Applying this evidence, combinations of values-centred approaches are proposed to improve valuation and address barriers to uptake, ultimately leveraging transformative changes towards more just (that is, fair treatment of people and nature, including inter- and intragenerational equity) and sustainable futures.

Painful data: The UNBC-McMaster shoulder pain expression archive database
Patrick Lucey, Jeffrey F. Cohn, Kenneth M. Prkachin, Patricia Solomon +1 more
2011602doi:10.1109/fg.2011.5771462

A major factor hindering the deployment of a fully functional automatic facial expression detection system is the lack of representative data. A solution to this is to narrow the context of the target application, so enough data is available to build robust models so high performance can be gained. Automatic pain detection from a patient's face represents one such application. To facilitate this work, researchers at McMaster University and University of Northern British Columbia captured video of participant's faces (who were suffering from shoulder pain) while they were performing a series of active and passive range-of-motion tests to their affected and unaffected limbs on two separate occasions. Each frame of this data was AU coded by certified FACS coders, and self-report and observer measures at the sequence level were taken as well. This database is called the UNBC-McMaster Shoulder Pain Expression Archive Database. To promote and facilitate research into pain and augment current datasets, we have publicly made available a portion of this database which includes: (1) 200 video sequences containing spontaneous facial expressions, (2) 48,398 FACS coded frames, (3) associated pain frame-by-frame scores and sequence-level self-report and observer measures, and (4) 66-point AAM landmarks. This paper documents this data distribution in addition to describing baseline results of our AAM/SVM system. This data will be available for distribution in March 2011.

International GAAP Differences: The Impact on Foreign Analysts
Kee‐Hong Bae, Hongping Tan, Michael Welker
2008· The Accounting Review583doi:10.2308/accr.2008.83.3.593

This paper investigates the relation between differences in accounting standards across countries and foreign analyst following and forecast accuracy. We develop two measures of differences in generally accepted accounting principles (GAAP) for 1,176 country-pairs. We then examine the impact of these measures of accounting differences on foreign analysts. In so doing, we utilize a unique database that identifies the location of financial analysts around the world, creating a sample that covers 6,888 foreign analysts making a total of 43,968 forecasts for 6,169 firms from 49 countries during 1998–2004. We find that the extent to which GAAP differs between two countries is negatively related to both foreign analyst following and forecast accuracy. Our results suggest that GAAP differences are associated with economic costs for financial analysts.

Transcription in Research and Practice: From Standardization of Technique to Interpretive Positionings
Judith C. Lapadat, Anne C. Lindsay
1999· Qualitative Inquiry574doi:10.1177/107780049900500104

Transcription is an integral process in the qualitative analysis of language data and is widely employed in basic and applied research across a number of disciplines and in professional practice fields. Yet, methodological and theoretical issues associated with the transcription process have received scant attention in the research literature. In this article, the authors present a cross-disciplinary conceptual review of the place of transcription in qualitative inquiry, in which the nature of transcription and the epistemological assumptions on which it rests are considered. The authors conclude that transcription is theory laden; the choices that researchers make about transcription enact the theories they hold and constrain the interpretations they can draw from their data. Because it has implications for the interpretation of research data and for decision making in practice fields, transcription as a process warrants further investigation.

Here's the Beef: Factors, Determinants, and Segments in Consumer Criticism of Advertising
Richard W. Pollay, Banwari Mittal
1993· Journal of Marketing550doi:10.1177/002224299305700307

A comprehensive model of attitudes toward advertising includes three personal utility factors (product information, social image information, and hedonic amusement) and four socioeconomic factors (good for economy, fostering materialism, corrupting values, and falsity/no-sense). The proposed 7-factor model was tested on two independent samples: collegians (188) and householders (195) from Ohio and Mississippi Valley states, explaining 62% and 56% of the variance in their global attitudes, respectively. The model's dimensions were used to profile these publics and to identify attitudinal segments within them. Most respondents exhibited conflict between an appreciation of the personal uses and economic value of advertising and an apprehension of cultural degradation.

Qualitative meta‐synthesis: a question of dialoguing with texts
Lela Zimmer
2006· Journal of Advanced Nursing544doi:10.1111/j.1365-2648.2006.03721.x

AIMS: This paper discusses whether useful synthesis of research reports across different qualitative methodologies is possible, and whether qualitative meta-synthesis violates the tenets of the interpretive paradigm. BACKGROUND: Qualitative meta-synthesis is a recent development in qualitative inquiry that offers a means of enhancing the contribution of qualitative findings to the development of more formalized knowledge. However, there are a number of unanswered questions and areas that require debate. DISCUSSION: A brief overview of qualitative meta-synthesis as a method of inquiry is presented. The assumptions of phenomenology, ethnography and grounded theory are explored for their amenability to meta-synthesis and the possibility of coherent synthesis of findings across these methodologies. In addition, a summary of major philosophical commitments common to the interpretive paradigm is presented. Qualitative meta-synthesis as a methodology is then explored for its fit within this paradigm. An argument is made, with some caveats, for synthesis across qualitative methodologies. Gadamer's concepts of the hermeneutic circle, the fusion of horizons, and dialogue with the text are explored for the insight they provide into the place of qualitative meta-synthesis in inquiry. CONCLUSION: It is important for researchers to bring hermeneutic skill to the process of meta-synthesis in order to develop a comprehensive understanding of the various philosophical assumptions in which qualitative approaches are based. The particular challenge of combining analysis and interpretation from studies with markedly different approaches and intentions may prompt synthesists to create new and innovative approaches to the presentation of meta-synthesis.

Recent Northern Hemisphere snow cover extent trends and implications for the snow‐albedo feedback
Stephen J. Déry, Ross Brown
2007· Geophysical Research Letters434doi:10.1029/2007gl031474

Monotonic trend analysis of Northern Hemisphere snow cover extent (SCE) over the period 1972–2006 with the Mann‐Kendall test reveals significant declines in SCE during spring over North America and Eurasia, with lesser declines during winter and some increases in fall SCE. The weekly mean trend attains −1.28, −0.78, and −0.48 × 10 6 km 2 (35 years) −1 over the Northern Hemisphere, North America, and Eurasia, respectively. The standardized SCE time series vary and trend coherently over Eurasia and North America, with evidence of a poleward amplification of decreasing SCE trends during spring. Multiple linear regression analyses reveal a significant dependence of the retreat of the spring continental SCE on latitude and elevation. The poleward amplification is consistent with an enhanced snow‐albedo feedback over northern latitudes that acts to reinforce an initial anomaly in the cryospheric system.