Social and Behavioral Sciences Commons^™

Illumination-Size Relationships Of 109 Coexisting Tropical Forest Tree Species, Douglas Sheil, Agus Salim, Jérôme Chave, Jerome K. Vanclay, William D. Hawthorne

Professor Jerome K Vanclay

Summary 1 Competition for light is a central issue in ecological questions concerning forest tree differentiation and diversity. Here, using 213 106 individual stem records derived from a national survey in Ghana, West Africa, we examine the relationship between relative crown exposure, ontogeny and phylogeny for 109 canopy species. 2 We use a generalized linear model (GLM) framework to allow interspecific comparisons of crown exposure that control for stem-size. For each species, a multinomial response model is used to describe the probabilities of the relative canopy illumination classes as a function of stem diameter. 3 In general, and for all …

Social And Ecological Issues For Private Native Forestry In North-Eastern New South Wales, Australia, V Alex Jay, J Doland Nichols, Jerome K. Vanclay

Professor Jerome K Vanclay

Forests in north-eastern New South Wales have often been the focus of controversy. The tension between production and preservation continues and hampers current negotiations for a code of practice for private native forestry. The structure of many private forests reflects past mismanagement and silvicultural intervention would benefit both conservation and production objectives, but such intervention is rarely financially viable. This paper sets out the economic and ecological basis for private native forestry. Both the timber industry and nature-based tourism are major contributors to the local economy, and both rely in part on private native forests. Draft regulations currently under negotiation …

Growth And Species Interactions Of Eucalyptus Pellita In A Mixed And Monoculture Plantation In The Humid Tropics Of North Queensland, Mila Bristow, Jerome K. Vanclay, Lyndon O. Brooks, Mark Hunt

Professor Jerome K Vanclay

This study investigated whether mixed-species designs can increase the growth of a tropical eucalypt when compared to monocultures. Monocultures of Eucalyptus pellita (E) and Acacia peregrina (A) and mixtures in various proportions (75E:25A, 50E:50A, 25E:75A) were planted in a replacement series design on the Atherton Tablelands of north Queensland, Australia. High mortality in the establishment phase due to repeated damage by tropical cyclones altered the trial design. Effects of experimental designs on tree growth were estimated using a linear mixed effects model with restricted maximum likelihood analysis (REML). Volume growth of individual eucalypt trees were positively affected by the presence …

Community Attitudes Towards Private Native Forestry In New South Wales, Jerome K. Vanclay

Professor Jerome K Vanclay

An on-line survey during August-September 2006 examined community attitudes toward private native forestry. Survey findings (n=156) confirmed prior hypotheses that attitudes would correlate with associations (e.g., professionals in favour of incentives, farmers in favour of freedom to manage, conservationists in favour of regulations), and with interest (biodiversity enthusiasts in favour of regulations; producers in favour of incentives), but refuted the prior hypotheses that urban dwellers would be more likely to favour regulations. Respondents appear to reflect different constituencies with divergent views without a shared understanding of the condition and dynamics of these forests. This indicates the need for more extension …

On The Robustness Of The H-Index, Jerome K. Vanclay

Professor Jerome K Vanclay

The h-index (Hirsch, 2005) is robust, remaining relatively unaffected by errors in the long tails of the citations-rank distribution, such as typographic errors that short-change frequently-cited papers and create bogus additional records. This robustness, and the ease with which h-indices can be verified, support the use of a Hirsch-type index over alternatives such as the journal impact factor. These merits of the h-index apply to both individuals and to journals.

Regeneration Changes In Tree Species Abundance Diversity And Structure In Logged And Unlogged Subtropical Rainforest Over A 36-Year Period, Maina Kariuki, Robert M. Kooyman, R Geoff B. Smith, Grant Wardell-Johnson, Jerome K. Vanclay

Professor Jerome K Vanclay

The long-term effects of logging treatments on rainforest regeneration are difficult to quantify due to compounding interactions with natural dynamics, site characteristics and tree species. The aim of this study was to examine regeneration differences over a 36-year period in stands subjected to various levels of disturbance ranging from natural, through an increasing intensity of individual tree removal to intensive logging. Multivariate and univariate analyses of trees ¡Ý 10 cm diameter at 1.3 m above the ground (dbh) showed that regeneration responses were generally correlated with disturbance gradient. In the undisturbed controls there were gradual changes that had no significant …

Realising Opportunities In Forest Growth Modelling, Jerome K. Vanclay

Professor Jerome K Vanclay

The world is continually changing: the emergence of new technology and new demands for pertinent information pose new challenges and possibilities for forest management. Are forest growth models keeping up with client needs? To remain relevant, modelers need to anticipate client needs, gauge the data needed to satisfy these demands, develop the tools to collect and analyze these data efficiently, and resolve how best to deliver the resulting models and other findings. Researchers and managers should jointly identify and articulate anticipated needs for the future, and initiate action to satisfy them. New technology that offers potential for innovation in forest …

Spatially-Explicit Competition Indices And The Analysis Of Mixed-Species Plantings With The Simile Modelling Environment, Jerome K. Vanclay

Professor Jerome K Vanclay

Individual-based modelling and analysis of forest experiments has been made more accessible to researchers with the advent of modelling environments like Simile from www.simulistics.com. Individual-based analyses of tree growth data offer insights not possible with plot-based analyses, especially when the original experimental design has been compromised by mortality or other unforeseen events. The paper illustrates how Simile can be used for individual-based analyses of mixed plantings, and how it can be used to explore the consequences of the resulting statistical models. A mixed-species planting of Eucalyptus pellita and Acacia peregrina is used to illustrate possibilities.

Structure And Floristic Composition Of Flood Plain Forests In The Peruvian Amazon, Ii. The Understorey Of Restinga Forests, Gustav Nebel, Jens Dragsted, Jerome K. Vanclay

Professor Jerome K Vanclay

Structure and floristic composition of small trees and shrubs (1.5 m height to 10 cm diameter at breast height was described in two flood plain forests of the lower Ucayali river, Peruvian Amazon. The forests were of the high and low restinga type, on an annual average flooded around 1 and 2 months, respectively. The soils were nutrient rich entisols, and the vegetation forms closed high canopy forests with presence of emergents. A total of 25 permanent sample plots covering 0.64 ha were established. They were nested within six quadratic 1 ha permanent sample plots where large individuals (>10 …

Sustainable Forestry In The Tropics: Panacea Or Folly?, David W. Pearce, Francis E. Putz, Jerome K. Vanclay

Professor Jerome K Vanclay

The profitability of uncontrolled logging can be a significant obstacle to sustainable forest management, especially in the tropics. Rice et al. (1997) have argued that not only does traditional selective logging provide higher returns but also incurs less damage to forests than sustainable forest management systems that involve harvesting of many species and the creation of large gaps in the forest canopy to foster regeneration of light-demanding species. They claimed that protected areas were the only viable way to conserve forest ecosystems and proposed that loggers be allowed to log forests selectively once, after which the forests should become parks. …

Forest Dynamics In Flood Plain Forests In The Peruvian Amazon: Effects Of Disturbance And Implications For Management, Gustav Nebel, Lars Peter Kvist, Jerome K. Vanclay, Hector Vidaurre

Professor Jerome K Vanclay

Forest dynamics were studied from 1993 to 1997 for individuals > 10 cm DBH in nine 1 ha permanent sample plots. They were established in natural flood plain forests located on the lower Ucayali river in the Peruvian Amazon. After inventories of three plots in each of three forest types, a light and a heavy felling treatment were applied to each of the two plots, while a third plot was kept untreated. Average annual stem mortality and recruitment rates in the untreated plots were among the highest observed in neotropical rain forests: mortality 2.2-3.2% per year, recruitment 3.0-4.6% per year. Dead …

The Effectiveness Of Parks, Jerome K. Vanclay

Professor Jerome K Vanclay

Bruner et al. examined the effectiveness of parks in the tropics, drawing on survey data to support their contention that parks 1) have been effective; 2) need more support; and 3) should remain a central component of conservation strategies. Their conclusions remain equivocal...

Experiment Designs To Evaluate Inter- And Intra-Specific Interactions In Mixed Plantings Of Forest Trees, Jerome K. Vanclay

Professor Jerome K Vanclay

A review of three mixed-species trials reveals the utility of competition indices for evaluating inter- and intra-specific interactions between trees, the desirability of experiments that span a range of tree spacing and composition to inform calibration of these competition indices, the need for extremes of species composition and stand density to calibrate response surfaces, and the far-reaching impact of edge-effects. Experiment layouts commonly used for mixed-species trials in forestry (such as replacement series) rarely provide a strong basis to calibrate competition indices and response surfaces. Alternative designs involving systematic changes in species composition may offer a better basis for calibrating …

How To Foster Good Husbandry Of Private Native Forests, Jerome K. Vanclay

Professor Jerome K Vanclay

It is generally agreed that effective conservation requires the cooperation of private landholders to complement reserve-based efforts, but there is little agreement about how this can best be achieved. Various stakeholders lobby for tough regulations, for greater landholder freedom, and for incentives for activities or outcomes. A review of these alternatives suggests an emerging consensus that incentives are the most effective approach. Policy-makers should consider incentive-based approaches such as stewardship support to foster conservation outcomes on private lands.

Why Model Landscapes At The Level Of Households And Fields?, Jerome K. Vanclay

Professor Jerome K Vanclay

Sustainable resource management relies upon many disciplines and deals with complex interactions at the landscape scale. Many of the issues at the landscape scale arise from decisions taken at the household level and affect land use in fields and in small patches of forest. Spatially-explicit modelling of these units is desirable because it enables rigorous testing of model predictions, and thus of underlying propositions. The greatest insights may be obtained by participatory modelling of these processes as we understand them. Despite this, few models simulate dynamics at the household and field level. FLORES, the Forest Land Oriented Resource Envisioning System, …

Diameter Growth Performance Varies With Species Functional-Group And Habitat Characteristics In Subtropical Rainforests, Maina Kariuki, Margaret Rolfe, R Geoff B. Smith, Jerome K. Vanclay, Robert M. Kooyman

Professor Jerome K Vanclay

We examined tree diameter growth in 20 plots subjected to various disturbance intensities (natural, low, moderate and intensive logging) in a bid to understand the general tree growth responses in relation to habitat characteristics in subtropical rainforests of north-eastern NSW, Australia. Species-specific regeneration strategy, maximum size and level of shade tolerance were used to classify species into five groups: emergent and shade tolerant main canopy (group 1), shade tolerant mid canopy (2), shade tolerant understoreys (3), moderate shade tolerant (4) and shade intolerant (5) tree species. Data series for trees ‗10 cm diameter at 1.3 m above the ground level …

Spiral And Interlocking Grain In Eucalyptus Dunnii, C Thinley, Graeme Palmer, Jerome K. Vanclay, Michael Henson

Professor Jerome K Vanclay

Spiral grain in 181 trees from a 9-year-old plantationgrown Eucalyptus dunnii was normally distributed with mean −0.33 degrees (to the left) and standard deviation 1.7 degrees, and was affected by family and by crown asymmetry. Interlocking grain was common, exhibiting a mean amplitude of 3.4 degrees (standard deviation 1.5◦) and a mean wavelength of 39 mm (standard deviation 12 mm). The relatively large amplitude of interlocking grain means that most trees will have spiral grain that alternates between left and right during each year. The wavelength of interlocking grain is influenced by tree size, but amplitude of interlocking is under …

A Long And Winding Road: The Regulation Of Private Native Forestry In New South Wales, Australia, Jerome K. Vanclay, J Doland Nichols

Professor Jerome K Vanclay

This special issue of Small-Scale Forestry is concerned with private native forestry (PNF) in New South Wales (NSW), Australia. Private native forests comprise indigenous species in a semi-natural formation on privately owned land. Such forests are usually uneven-aged, and regenerated naturally rather than by sowing or planting. These forests are of major conservation and commercial importance in NSW, covering 8 M ha and comprising one-third of all native forest in the state (Thompson 2007). The management and harvesting of these forests is known as PNF, and has been the focus of public attention for several years, as the desirability and …

The Patriot Act And Early Ala Action: Habermas, Strauss, Or Derrida?, David Woolwine

Library Philosophy and Practice (e-journal)

In the wake of the September 11, 2001, terrorist attacks the United States Congress passed special security and anti-terrorism legislation which included the USA Patriot Act. In response to the passage of the Act in 2001 two Councils of the American Library Association (ALA) passed resolutions reaffirming the basic principles of that organization. This article is an account of how two early ALA Council resolutions CD 19.1 (Midwinter 2002) and CD 20.1. (Midwinter 2003) were drafted and brought to Council. It is also a reflection upon the nature of political and social discourse and the fixing of meaning. It asks …

Segmented Professions: Further Considerations Of Theory And Practice In Lis And Librarianship, Andrew Carlin

Library Philosophy and Practice (e-journal)

How relevant are theories of information to practical library work? Using sociology and the philosophy of social sciences, this essay discusses how theoretical work defines an area of knowledge in relation to other fields, the identification of researchable phenomena, and how phenomena are established as its own subject matter. Theorizing is a generic activity, highlighting connections between theory and practice, profession and field. While proposing that theorizing is important, this paper explores the nature of theorizing in LIS, and suggests that its cognitivistic foundations impede theory development. Information is a linkage between theory and practice, and this paper argues that …

Building Financial Stability Through International Collaboration: A Proposal For Partnerships With Chinese Universities, Courtright Memorial Library

Otterbein China Librarians Exchange Program Documentations and Publications

This proposal to the president addresses the need for Otterbein University to establish robust collaborations with Chinese universities to foster financial stability and enhance its global presence.

This proposal outlines five primary strategies for partnering with Chinese universities: student recruitment, student exchanges, faculty exchanges, study abroad programs, and joint degree programs. Each method offers distinct benefits and requires varying levels of commitment, offering Otterbein the flexibility to tailor its engagement with Chinese institutions.

The document also underscores existing relationships with prominent Chinese institutions established through prior visits by Otterbein staff, creating a solid foundation for further collaboration.

Health Care Fraud, Sara J. Rosenbaum, Nancy Lopez, Scott Stifler

Health Policy and Management Faculty Publications

Adequate safeguards against health care fraud are essential to the proper functioning of any health care system. This analysis examines health care fraud in the U.S., and its findings underscore the importance to national health reform of comprehensive anti-fraud protections covering both public and private health insurance industry. This analysis, funded by the Robert Wood Johnson Foundation, examines health care fraud in a national policy context.

Genetical Genomic Determinants Of Alcohol Consumption In Rats And Humans, Heather Richardson, Boris Tabakoff, Laura Saba, Morton Printz, Pam Flodman, Colin Hodgkinson, David Goldman, George Koob, Katerina Kechris, Richard L. Bell, Norbert Hubner, Matthias Heinig, Michal Pravenec, Jonathan Mangion, Lucie Legault, Maurice Dongier, Katherine M. Conigrave, John B. Whitfield, John Saunders, Bridget Grant, Paula L. Hoffman

Heather Richardson

Background: We have used a genetical genomic approach, in conjunction with phenotypic analysis of alcohol consumption, to identify candidate genes that predispose to varying levels of alcohol intake by HXB/BXH recombinant inbred rat strains. In addition, in two populations of humans, we assessed genetic polymorphisms associated with alcohol consumption using a custom genotyping array for 1,350 single nucleotide polymorphisms (SNPs). Our goal was to ascertain whether our approach, which relies on statistical and informatics techniques, and non-human animal models of alcohol drinking behavior, could inform interpretation of genetic association studies with human populations. Results: In the HXB/BXH recombinant inbred (RI) …

Ua12/2/1 College Heights Herald, Vol. 85, No. 14, Wku Student Affairs

WKU Archives Records

WKU campus newspaper reporting campus, athletic and Bowling Green, Kentucky news.

Zach's News, Georgia Southern University, Zach S. Henderson Library

University Libraries News Online (2008-2023)

• Hot Doc: Flu.gov

Cedarville Vs. Walsh, Cedarville University

Men's Soccer Programs

No abstract provided.

Spartan Daily October 27, 2009, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily (School of Journalism and Mass Communications)

Volume 133, Issue 30

Walsh Vs. Cedarville, Cedarville University

Men's Soccer Statistics

No abstract provided.

Student Discipline In New Hampshire Schools , Barbara Wauchope

Carsey School of Public Policy

A new analysis of student discipline in New Hampshire schools in the 2007–2008 school year shows that out-of-school suspension rates are higher and statewide expulsion rates are lower than the average. Schools reporting the highest rates of suspensions and expulsions are the smallest in the state and have the highest percentage of students in poverty. This brief is the first in a collaborative series between the Children's Alliance of New Hampshire and the Carsey Institute.

Cedarville Vs. Walsh, Cedarville University

Women's Soccer Programs

No abstract provided.