Digital Commons Network^™

Circadian Patterns Recognition In Ecosystems By Wavelet Filtering And Fuzzy Clustering, Stefano Marsili-Libelli, Simone Arrigucci

International Congress on Environmental Modelling and Software

This paper presents a method for extracting representative patterns from a set of data representing circadian cycles. The analysis is based on a combination of wavelet filtering and fuzzy clustering. The data are first processed with a discrete wavelet decomposition in order to filter out the noise and isolate the relevant circadian cycle. It is shown that the second level decomposition yields the best cycle approximation, filtering out measurement noise and other artefacts and preserving the main cycle features. From the filtered data the following discriminating features are extracted: minimum and maximum daily values, and the slope of the line …

Linking Hydrologic Modeling And Ecologic Modeling: An Application Of Adaptive Ecosystem Management In The Everglades Mangrove Zone Of Florida Bay, Jon C. Cline, Jerome J. Lorenz, Eric D. Swain

International Congress on Environmental Modelling and Software

The Across Trophic Levels System Simulator (ATLSS) is a suite of ecological models designed to assess the impact of changes in hydrology on biotic components of the southern Florida ecosystem. ATLSS implements a multimodeling approach that utilizes process models for lower trophic levels, structured population models for middle trophic levels (fish and macroinvertebrates), and individual-based models for large consumers. ATLSS requires hydrologic input to assess the effects of alternative proposed restoration scenarios on trophic structure. An ATLSS model (ALFISH) for functional fish groups in freshwater marshes in the Everglades of southern Florida has been extended to create a new model …

Pub And Data-Based Mechanistic Modelling: The Importance Of Parsimonious Continuous-Time Models, Peter C. Young, Renata J. Romanowicz

International Congress on Environmental Modelling and Software

The problem of Prediction in Ungauged Basins (PUB) is intimately linked with the concept of regionalisation; namely the transfer of information from one catchment that is gauged to another that is not. But such regionalisation exercises can be dangerous and should be attempted only with great care. The present paper addresses what the authors believe to be one essential aspect of regionalisation: namely, the importance of considering only ‘top-down’ models that are parametrically efficient (parsimonious) and fully ‘identifiable’ from the available catchment data. We argue further that many mechanistic model parameters are more naturally defined in the context of continuous-time, …

Simulation Of Dynamic Tree Species Patterns In The Alpine Region Of Valais (Switzerland) During The Holocene, Heike Lischke

International Congress on Environmental Modelling and Software

The spatio temporal forest landscape model TreeMig is presented. It is based on a forest dynamics model that incorporates spatial variability by frequency distributions for tree densities and light intensities. It also takes into account seed production, intra-specific density regulation and seed dispersal. As a case study, the change of the tree species patterns in the Central-Alpine region of Valais was simulated with the model, using climate anomaly and immigration scenarios. The simulations were run on a grid with 1km x 1km resolution and with a yearly time step during the Holocene in the highly structured and heterogeneous environment of …

The Coexistence Of Plankton Species With Various Nutrient Conditions: A Lattice Simulation Model, T. Miyazaki, T. Togashi, T. Suzuki, T. Hashimoto, K. Tainaka, J. Yoshimura

International Congress on Environmental Modelling and Software

In aquatic ecosystems, species diversity is known to be higher in poor nutrient conditions. Theenrichment of nutrition often induces the loss of biodiversity. This phenomenon is called the paradox ofenrichment, since higher nutrient levels can support more species. Furthermore, the species diversity isusually high in most natural communities of phytoplankton. However, the niches of planktonic algae seemalmost identical in apparently homogeneous, aquatic environments. Therefore, the high species diversity ofphytoplankton is incomprehensible and called the paradox of plankton. Mathematical studies show that localcoexistence of competitive species is rare. In a competitive community, the most superior species eliminatesall the inferior species in …

Towards An Environmental Dss Based On Spatio-Temporal Markov Chain Approximation, Gerard Balent, Marc Deconchat, Sylvie Ladet, Roger Martin-Clouaire, Regis Sabbadin

International Congress on Environmental Modelling and Software

The aim of this paper is to provide a mathematical model for assessing the influence of forest fragmentation on the dynamics of animal biodiversity in a changing landscape. The model is based on a stochastic, spatially explicit population dynamics model which takes both temporal and spatial dynamics of biological processes into account. Unfortunately, this model is not tractable, so we will use a Monte Carlo simulation method in order to approximate the multidimensional random variables involved. The main strength of our approach is its ability to model generic biological and socio-economic dynamic processes, which are both explicitly spatial and stochastic. …

Introducing River Modelling In The Implementation Of The Dpsir Scheme Of The Water Framework Directive, Stefano Marsili-Libelli, Francesco Betti, Susanna Cavalieri

International Congress on Environmental Modelling and Software

In Italy the National Environmental Protection Agency (ANPA) is about to adopt the Drivers- Pressures-States-Impacts-Responses (DPSIR) model introduced by the EC Water Framework Directive (WFD). This paper reassess the current definitions of Indicators in the light of the WFD, proposes the design of modular procedures and computational practices to determine the most significant State indicators, integrates the QUAL2E water quality model for the generation of quality data to assess differing DPSIR scenarios, with the final aim to produce an integrated software, partly based on Excel and partly on QUAL2E, whereby current quality data can be used to generate quality scenarios …

Uah Alumni News, Summer 2004, University Of Alabama In Huntsville

UAH Alumni News

No abstract provided.

Focus, Bob Evancho (Editor)

FOCUS on Boise State

Today’s Boise State University is building on past success and setting the pace in a changing academic world. Leading that charge is a diverse array of faculty members from longtime professors to those fresh out of doctoral programs. They are researchers, writers, performers, lecturers and philosophers — more than 950 full- and part-time teachers dedicated to keeping Boise State on the leading edge of higher education. Pictured on the cover (clockwise from upper left) are Richard Klautsch, theatre arts; Susan Shadle, chemistry; Giselle Wyers, music; Tom Trusky, English; Marcellus Brown, music; and Yonnie Chyung, instructional and performance technology. Photos by …

Prospectus, July 1, 2004, Jon Volkman, Chris Cunningham, Larry V. Gilbert

Prospectus 2004

No abstract provided.

A Patch Hath Smaller Patches: Delineating Ecological Neighborhoods For Parasites, Derek Zelmer, John R. Seed

Faculty Publications

Use of the host individual as a boundary for parasite populations and communities provides an unambiguous spatial unit that is useful for pattern description, but this framework precludes consideration of the host landscape and within-host population dynamics. Recognizing host individuals as spatially and temporally complex landscapes requires modified concepts of parasite populations and communities. An outline of the currently accepted hierarchies of parasite populations and communities is provided on the basis of ecological neighborhoods that are delineated by discrete habitat patches or functional dynamics (or both), as opposed to host individuals. This parasite-based framework accommodates consideration of both within- and …

Grand Valley Magazine, Vol. 3, No. 3 Summer 2004, Grand Valley State University

Grand Valley Magazine

Grand Valley Magazine is a quarterly publication about Grand Valley State University produced by University Communications since 2001.

Molecular Analysis Of Carbon Monoxide-Oxidizing Bacteria Associated With Recent Hawaiian Volcanic Deposits, Kari E. Dunfield, Gary M. King

Faculty Publications

Genomic DNA extracts from four sites at Kilauea Volcano were used as templates for PCR amplification of the large subunit (coxL) of aerobic carbon monoxide dehydrogenase. The sites included a 42-year-old tephra deposit, a 108-year-old lava flow, a 212-year-old partially vegetated ash-and-tephra deposit, and an approximately 300-year-old forest. PCR primers amplified coxL sequences from the OMP clade of CO oxidizers, which includes isolates such as Oligotropha carboxidovorans, Mycobacterium tuberculosis, and Pseudomonas thermocarboxydovorans. PCR products were used to create clone libraries that provide the first insights into the diversity and phylogenetic affiliations of CO oxidizers in situ. On the basis of …

Orange & White - Summer 2004, University Of Texas At Brownsville, Texas Southmost College

UTB/TSC Archives - Orange & White Magazine

No abstract provided.

Wright State University Libraries Access Newsletter Summer 2004, Wright State University Libraries

Access Newsletter

An eight page newsletter created by Wright State University Libraries that addresses the current affairs of the Libraries.

Cultural Myths, Concrete Results, And Whoops Again, Peter M. Lavigne

Natural Resources Journal

No abstract provided.

Administrative Rulemaking And Public Lands Conflict: The Forest Service's Roadless Rule, Martin Nie

Natural Resources Journal

No abstract provided.

The Hanford Nuclear Waste Site: A Legacy Of Risk, Cost, And Inefficiency, Noah D. Lichtenstein

Natural Resources Journal

No abstract provided.

International Law Of The Sea/Seed: Public Domain Versus Private Commodity, Carol B. Thompson

Natural Resources Journal

No abstract provided.

The Deep Seabed: Customary Law Codified, Ian Bezpalko

Natural Resources Journal

No abstract provided.

The "Tragedy Of The Community", Lora A. Lucero

Natural Resources Journal

No abstract provided.

Capturing The Commons: Devising Institutions To Manage The Maine Lobster Industry, By James M. Acheson, Michael Lyons

Natural Resources Journal

No abstract provided.

Books Received, Natural Resources Journal

Natural Resources Journal

No abstract provided.

Habitat Use By Middle Mississippi River Pallid Sturgeon, Keith L. Hurley, Robert J. Sheehan, Roy C. Heidinger, Paul S. Wills, Bob Clevenstine

Publications

Little is known about the habitat preferences and needs of pallid sturgeon Scaphirhynchus albus, which was federally listed as endangered in 1990. To learn more about habitat use and selection by pallid sturgeon, sonic transmitters were surgically implanted in 27 individuals from the middle Mississippi River. Study fish were located 184 times (1–23 times/individual) from November 1995 to December 1999. Of the seven macrohabitats identified, pallid sturgeon were found most often in main-channel habitats (39% of all relocations) and main-channel border habitats (26%); the between-wing-dam habitats were used less often (14%). Strauss’s linear selectivity index (L_i) …

Louisiana Agriculture Summer, 2004, Lsu Agcenter

Louisiana Agriculture

No abstract provided.

Initial Studies On Sperm Cryopreservation Of A Live-Bearing Fish, The Green Swordtail Xiphophorus Helleri, Changjiang Huang, Qiaoxiang Dong, Ronald B. Walter, Terrence R. Tiersch

Faculty Publications

Swordtails and platyfish of the genus Xiphophorus are valuable models for biomedical research and are also commercially raised as ornamental fish valued by aquarists. While research use and commercial interest increases yearly in these fish, cryopreservation of sperm is unexplored in this genus. Xiphophorus are live-bearing fishes characterized by small body sizes, limited sperm volumes, and internal fertilization, an atypical reproductive mode for fish. These attributes make research involving cryopreservation of Xiphophorus germplasm challenging. To explore methods for sperm cryopreservation, this study evaluated the effect of different loading volumes of sperm suspension in 0.25-ml French straws, different dilution ratios of …

Negative Pressure Pulmonary Edema: Case Report, S M. Abbas, M Q. Hoda

Department of Anaesthesia

No abstract provided.

Patterns And Processes Of Recovery In And Around An Indiana Limestone Quarry, Dana A. Dudle, Vanessa L. Fox, Bryan Helm, David Pope, Aaron Randolph

Annual Student Research Poster Session

Introduction
Here we present baseline data on forest songbird communities in the DePauw Nature Park. Our goal was to survey the songbird population and assess the quality of forest habitat in the park.

Methods
We set up study plots in three forested sites: Arboretum (ARB), Quarry South (QS), and Quarry Hillside (QH). We surveyed bird populations using the territory-mapping method. Each site was surveyed four times during May and June between 6 and 10 a.m. During each survey, we recorded locations of songbirds. Clusters of observations over multiple visits were used to identify songbird territories. Population sizes for songbird species …

Wooster Magazine: Summer 2004, Lisa Watts

Wooster Magazine: 2001-2010

This edition of the Wooster Magazine was published in the Summer of 2004. Five students are featured for their Independent Study projects: Kate Matthews, Samantha Ferm, Pat McKenzie, Hanneke Hoekman, and Angela Zombek. Wooster's improv group called Don't Throw Shoes is featured from page twenty-six to thirty. The Class Notes section is featured from page thirty-one to sixty-three from the class of 1931 to 2004. Births, adoptions, and obituaries end the section. Page sixty-four has a story of Wooster's first 'museum' (cabinet of curiosities) in Old Main and its most curious artifact, a skull that supposedly was Nat Turner's.

Genetics: The Not-So-New Thing, Dena S. Davis

Law Faculty Articles and Essays

Practical knowledge of heredity predates history. Indigenous peoples laid the foundations of modern agriculture by developing plants such as corn. However, the language and metaphors of the Human Genome Project treat modern genetics as if it had no historical antecedents and fail to acknowledge these early contributions to the science of heredity. The results of this blindness are twofold: it exacerbates reluctance of native peoples to take part in genetic research and to garner the benefits of genetic medicine, and it encourages "biopiracy," as modern scientists "discover" and patent native plants.