Digital Commons Network^™

Hillslope Hydrology In Global Change Research And Earth System Modeling, Y. Fan, M. Clark, D. M. Lawrence, S. Swenson, L.E. Band, S. L. Brantley, P. D. Brooks, W. E. Dietrich, A. Flores, G. Grant, J.W. Kirchner, D. S. Mackay, J. J. Mcdonnell, P. C. D. Milly, P. L. Sullivan, C. Tague, H. Ajami, N. Chaney, A. Hartmann, P. Hazenberg, J. Mcnamara, J. Pelletier, J. Perket, E. Rouholahnejad‐Freund, T. Wagener, X. Zeng, E. Beighley, J. Buzan, M. Huang, B. Livneh, B. P. Mohanty, B. Nijssen, M. Safeeq, C. Shen, W. Van Verseveld, J. Volk, D. Yamazaki

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

Earth System Models (ESMs) are essential tools for understanding and predicting global change, but they cannot explicitly resolve hillslope‐scale terrain structures that fundamentally organize water, energy, and biogeochemical stores and fluxes at subgrid scales. Here we bring together hydrologists, Critical Zone scientists, and ESM developers, to explore how hillslope structures may modulate ESM grid‐level water, energy, and biogeochemical fluxes. In contrast to the one‐dimensional (1‐D), 2‐ to 3‐mdeep, and free‐draining soil hydrology in most ESM land models, we hypothesize that 3‐D, lateral ridge‐to‐valley flow through shallow and deep paths and insolation contrasts between sunny and shady slopes are the top …

Simulation Model For Collaborative Decision Making On Sediment Source Reduction In An Intensively Managed Watershed, Se Jong Cho, Peter Wilcock, Patrick Belmont, Karen B. Gran, Benjamin F. Hobbs

Watershed Sciences Faculty Publications

We developed a watershed sediment source and delivery model for use in evaluating conservation trade‐offs in southern Minnesota, where sediment loading has been identified as a priority and there is substantial public investment in cleaner water. The model was developed in a stakeholder process and links user‐specified management options to reductions in sediment loading at the outlet of a 2,880‐km2 intensively farmed watershed. The simulation model was formulated to allocate total sediment load among sources, which provides robustness to the model by constraining the relative magnitude of sediment loads and their reduction. A novel topographic filtering approach was used to …

Chinese Immigration-Exclusion Pamphlets, Volume Ii, 1870-1906

Chinese Pamphlets

Eight pamphlets published between 1870 and 1906 consisting of topics such as the treatment of the exempt classes of Chinese in the United States, Chinese immigration, Chinese mining license tax, the evils of the Mongolian immigration, the “true sentiments” of the Republican Party of California on the Chinese question, the nature and effect of the competition by Chinese with American labor, the church and Chinese immigration, cholera in San Francisco and the conflict of the races.

A Long-Term (2002 To 2017) Record Of Closed-Path And Open-Path Eddy Covariance Co2 Net Ecosystem Exchange Fluxes From The Siberian Arctic, David Holl, Christian Wille, Torsten Sachs, Peter Schreiber, Benjamin R. K. Runkle, Lutz Beckebanze, Moritz Langer, Julia Boike, Eva-Maria Pfeiffer, Irina Fedorova, Dimitry Y. Bolshianov, Mikhail N. Grigoriev, Lars Kutzbach

Biological and Agricultural Engineering Faculty Publications and Presentations

Ground-based observations of land–atmosphere fluxes are necessary to progressively improve global climate models. Observed data can be used for model evaluation and to develop or tune process models. In arctic permafrost regions, climate–carbon feedbacks are amplified. Therefore, increased efforts to better represent these regions in global climate models have been made in recent years. We present a multi-annual time series of land–atmosphere carbon dioxide fluxes measured in situ with the eddy covariance technique in the Siberian Arctic (72◦220 N, 126◦300 E). The site is part of the international network of eddy covariance flux observation stations (FLUXNET; site ID: Ru-Sam). The …

Demographic Analyses Of The Data Limited Silky Shark Population In The Indian Ocean Using A Two-Sex Stochastic Matrix Framework, Wen-Pei Tsai, Yen-Jun Wang, Atsuko Yamaguchi

Journal of Marine Science and Technology–Taiwan

The silky shark, Carcharhinus falciformis, is a common bycatch species of tuna and swordfish longline fishing in the Indian Ocean. The high value of its fins makes it one of the most heavily fished shark species in the world. Concern over declining populations and the uncertainty surrounding its population dynamics has increased the urgency of developing appropriate methods to assess its stock status. This study developed a two-sex stage-based structured matrix model with Monte Carlo simulations to examine silky shark demography and population dynamics. The simulations indicate that, without mortality from fishing, the stock will increase slightly (sex combined mean …

Geographic And Socio-Economic Variation In Markers Of Indoor Air Pollution In Nepal: Evidence From Nationally-Representative Data, Saruna Ghimire, Shiva Raj Mishra, Abhishek Sharma, Adugna Siweya, Nipun Shrestha, Bipin Adhikar

School of Public Health Faculty Research

Background In low-income countries such as Nepal, indoor air pollution (IAP), generated by the indoor burning of biomass fuels, is the top-fourth risk factor driving overall morbidity and mortality. We present the first assessment of geographic and socio-economic determinants of the markers of IAP (specifically fuel types, cooking practices, and indoor smoking) in a nationally-representative sample of Nepalese households. Methods Household level data on 11,040 households, obtained from the 2016 Nepal Demographic and Health Survey, were analyzed. Binary logistic regression analyses were conducted to assess the use of fuel types, indoor cooking practices, indoor smoking and IAP with respect to …

1912 - The Missions And Missionaries Of California, Vol. Ii, Upper California, Part I, General History, Zephyrin Engelhardt

Franciscan Publications

Volume II was a general accounting of the missions and missionaries in Upper California. Section I addressed the establishment and administration of the missions by Fr. Junípero Serra. Section II covered the administration of Fr. Fermín Francisco de Lasuén and Fr. Estevan Tapis. The author posited that the real object of the conquest and occupation of Alta California was not the establishment of the Catholic faith in California but rather to fund expeditions and secure the land from the Russians and others who were making expeditions in the region. Engelhardt's evidence was the fact that the Spanish government seized and …

The Ethics Of Human-Animal Relationships And Public Discourse: A Case Study Of Lions Bred For Their Bones, Peter Coals, Dawn Burnham, Andrew Loveridge, David W. Macdonald, Michael 'T Sas-Rolfes, Vivvienne Williams, John A. Vucetich

College of Forest Resources and Environmental Science Publications

Conservation and natural resource management are increasingly attending the ethical elements of public decisions. Ethical considerations are challenging, in part, because they typically require accounting for the moral consideration of various human and nonhuman forms of life, whose interests sometimes conflict (or seem to conflict). A valuable tool for such evaluations is the formal analysis of ethical arguments. An ethical argument is a collection of premises, logically interrelated, to yield a conclusion that can be expressed in the form, “We ought to…” According to the rules of logic, a conclusion is supported by an argument if all its …

Employing Plant Functional Groups To Advance Seed Dispersal Ecology And Conservation, Clare Aslan, Noelle G. Beckman, Haldre S. Rogers, Judie Bronstein, Damaris Zurell, Florian Hartig, Katriona Shea, Liba Pejchar, Mike Neubert, John Poulsen, Janneke Hillerislambers, Maria Miriti, Bette Loiselle, Edu Effiom, Jenny Zambrano, Eugene W. Schupp, Et Al.

Biology Faculty Publications

Seed dispersal enables plants to reach hospitable germination sites and escape natural enemies. Understanding when and how much seed dispersal matters to plant fitness is critical for understanding plant population and community dynamics. At the same time, the complexity of factors that determine if a seed will be successfully dispersed and subsequently develop into a reproductive plant is daunting. Quantifying all factors that may influence seed dispersal effectiveness for any potential seed-vector relationship would require an unrealistically large amount of time, materials and financial resources. On the other hand, being able to make dispersal predictions is critical for predicting whether …

Retrieval Of Phytoplankton Pigments From Underway Spectrophotometry In The Fram Strait, Yangyang Liu, Emmanuel Boss, Alison Chase, Hongyan Xi, Xiaodong Zhang, Rüdiger Röttgers, Yanqun Pan, Astrid Bracher

Faculty Publications

Phytoplankton in the ocean are extremely diverse. The abundance of various intracellular pigments are often used to study phytoplankton physiology and ecology, and identify and quantify different phytoplankton groups. In this study, phytoplankton absorption spectra (α_ph(λ)) derived from underway flow-through AC-S measurements in the Fram Strait are combined with phytoplankton pigment measurements analyzed by high-performance liquid chromatography (HPLC) to evaluate the retrieval of various pigment concentrations at high spatial resolution. The performances of two approaches, Gaussian decomposition and the matrix inversion technique are investigated and compared. Our study is the first to apply the matrix inversion …

Blood Parasites Infecting The Hoatzin (Opisthocomus Hoazin), A Unique Neotropical Folivorous Bird, M. Andreína Pacheco, M. Alexandra García-Amado, Jaime Manzano, Nubia E. Matta, Ananias A. Escalante

Harold W. Manter Laboratory of Parasitology: Library Materials

The Hoatzin (Opisthocomus hoazin) is the only extant member of the order Opisthocomiformes. This unique South American bird lives in the riparian lowland vegetation characteristic of the Amazon and Orinoco basins. Hoatzins nest in communal social units close to water bodies; they are strictly folivores being the only bird with pregastric fermentation in the crop. Because of the complex logistics involved in capturing this bird, there is a knowledge gap on its parasites. This study documents two distant lineages of haemosporidian parasites (Plasmodium spp.) in a juvenile and two adults sampled in the Cojedes state, Venezuela. Although …

Nutrient Acquisition Strategies Augment Growth In Tropical N2‐Fixing Trees In Nutrient‐Poor Soil And Under Elevated Co2, Megan K. Nasto, Klaus Winter, Benjamin L. Turner, Cory C. Cleveland

Ecology Center Publications

Tropical forests play a dominant role in the global carbon (C) cycle, and models predict increases in tropical net primary productivity (NPP) and C storage in response to rising atmospheric carbon dioxide (CO₂) concentrations. The extent to which increasing CO₂ will enhance NPP depends in part on the availability of nitrogen (N) and phosphorus (P) to support growth. Some tropical trees can potentially overcome nutrient limitation by acquiring N via symbiotic dinitrogen (N₂) fixation, which may provide a benefit in acquiring P via investment in N‐rich phosphatase enzymes or arbuscular mycorrhizal (AM) fungi. We conducted …

Biogeochemical Recuperation Of Lowland Tropical Forest During Succession, Benjamin W. Sullivan, Rachel L. Nifong, Megan K. Nasto, Silvia Alvarez-Clare, Camie M. Dencker, Fiona M. Soper, Kevin T. Shoemaker, F. Yoko Ishida, Joana Zaragoza-Castells, Eric A. Davidson, Cory C. Cleveland

Biology Faculty Publications

High rates of land conversion and land use change have vastly increased the proportion of secondary forest in the lowland tropics relative to mature forest. As secondary forests recover following abandonment, nitrogen (N) and phosphorus (P) must be present in sufficient quantities to sustain high rates of net primary production and to replenish the nutrients lost during land use prior to secondary forest establishment. Biogeochemical theory and results from individual studies suggest that N can recuperate during secondary forest recovery, especially relative to P. Here, we synthesized 23 metrics of N and P in soil and plants from 45 secondary …

Invasion Genetics Of The Mummichog (Fundulus Heteroclitus): Recent Anthropogenic Introduction In Iberia, Teofilo Morim, Grant R. Bigg, Pedro M. Madeira, Jorge Palma, David D. Duvernell, Enric Gisbert, Regina L. Cunha, Rita Castilho

Biological Sciences Faculty Research & Creative Works

Human activities such as trade and transport have increased considerably in the last decades, greatly facilitating the introduction and spread of non-native species at a global level. In the Iberian Peninsula, Fundulus heteroclitus, a small euryhaline coastal fish with short dispersal, was found for the first time in the mid-1970s. Since then, F. heteroclitus has undergone range expansions, colonizing the southern region of Portugal, southwestern coast of Spain and the Ebro Delta in the Mediterranean Sea. Cytochrome b sequences were used to elucidate the species invasion pathway in Iberia. Three Iberian locations (Faro, Cádiz and Ebro Delta) and 13 …

Bird Monitoring At Effigy Mounds National Monument, Iowa, Status Report 2009–2017, David G. Peitz, Lloyd W. Morrison, Kristen L. Mecke

United States National Park Service: Publications

Executive Summary

In 2009, the Heartland Inventory and Monitoring (I&M) Network) initiated breeding bird surveys on Effigy Mounds National Monument (NM), Iowa, to address two objectives: (1) to monitor changes in bird community composition and abundance, and (2) to improve our understanding of relationships between breeding birds and habitat and the effects of management actions on such relationships. This report evaluates trends in the park’s breeding bird populations in the context of trends observed within the North American Bird Conservation Initiative’s (NABCI) Prairie Hardwood Transition Bird Conservation Region, the bird conservation region in which the park is located. By doing …

Plant Community Composition And Structure Monitoring At Agate Fossil Beds National Monument, 2018 Data Report, Ryan M. Manuel

United States National Park Service: Publications

Abstract

This report presents the results of vegetation monitoring efforts in 2018 at Agate Fossil Beds National Monument (AGFO) by the Northern Great Plains Inventory and Monitoring Network (NGPN) and the Northern Great Plains Fire Effects Program (NGPFire). This was the eighth year of field work conducted by NGPN at AGFO.

In 2018, crew members from NGPN visited six long-term plant community monitoring (PCM) plots, four legacy plant community monitoring (LPCM) plots, and NGPFire visited one additional PCM plot to collect data on plant communities at AGFO. This collaborative effort is part of a long-term monitoring program established to better …

Climatic Variables Are Strong Predictors Of Allonursing And Communal Nesting In Primates, Alexandra Louppova

Theses and Dissertations

Allomaternal care (AMC) is widespread throughout the primate order, previous studies have focused on benefits and costs to individuals. However, our understanding of environmental impacts on AMC behaviors in primates is still limited. Our study examines how ecology and environmental factors can predict certain AMC behaviors more than others.

Effect Of Lianas On Forest‐Level Tree Carbon Accumulation Does Not Differ Between Seasons: Results From A Liana Removal Experiment In Panama, Geertje M. F. Van Der Heijden, Jennifer S. Powers, Stefan A. Schnitzer

Biological Sciences Faculty Research and Publications

1. Lianas are prevalent in Neotropical forests, where liana‐tree competition can be intense, resulting in reduced tree growth and survival. The ability of lianas to grow relative to trees during the dry season suggests that liana‐tree competition is also strongest in the dry season. If correct, the predicted intensification of the drying trend over large areas of the tropics in the future may therefore intensify liana‐tree competition resulting in a reduced carbon sink function of tropical forests. However, no study has established whether the liana effect on tree carbon accumulation is indeed stronger in the dry than in the wet season. …

Urban Colonization Through Multiple Genetic Lenses: The City‐Fox Phenomenon Revisited, Alexandra L. Decandia, Kristin Brzeski, Elizabeth Heppenheimer, Catherine V. Caro, Glauco Camenisch, Peter Wandeler, Carlos Driscoll

Michigan Tech Publications, Part 1

Urbanization is driving environmental change on a global scale, creating novel environments for wildlife to colonize. Through a combination of stochastic and selective processes, urbanization is also driving evolutionary change. For instance, difficulty in traversing human‐modified landscapes may isolate newly established populations from rural sources, while novel selective pressures, such as altered disease risk, toxicant exposure, and light pollution, may further diverge populations through local adaptation. Assessing the evolutionary consequences of urban colonization and the processes underlying them is a principle aim of urban evolutionary ecology. In the present study, we revisited the genetic effects of urbanization on red foxes …

A Heuristic Classification Of Woody Plants Based On Contrasting Shade And Drought Strategies, Liang Wei, Chonggang Xu, Steven Jansen, Hang Zhou, Bradley O. Christoffersen, William T. Pockman, Richard S. Middleton, John D. Marshall, Nate G. Mcdowell

School of Earth, Environmental, & Marine Sciences Faculty Publications

Woody plants vary in their adaptations to drought and shade. For a better prediction of vegetation responses to drought and shade within dynamic global vegetation models, it is critical to group species into functional types with similar adaptations. One of the key challenges is that the adaptations are generally determined by a large number of plant traits that may not be available for a large number of species. In this study, we present two heuristic woody plant groups that were separated using cluster analysis in a three-dimensional trait–environment space based on three key metrics for each species: mean xylem embolism …

Urban Cultural Omnivores, Upscaling Ethnic Food And Culinary Reproduction In Marco And Suntiang, Shuri Mariasih Gietty Tambunan, Maria Regina Widhiasti, Yudi Bachrioktora, Nila Ayu Utami

International Review of Humanities Studies

Culinary practices have always been considered as social and cultural activities signifying ideas of continuity and transformation regarding one‟s culture and identity. As migration happens, people move from their hometown and recreate familiar food and flavors in their new home. Therefore, the study of culinary practices will reveal the dynamics of constant negotiation between having to trace back the familiar taste, for example by using inherited recipes, with the necessity to innovate and reproduce meals from their hometown with new ingredients and materials found in the new place. Furthermore, in an urban setting that has been heavily influenced with a …

Risk Factors For Boating Incidents In Inuvik, Northwest Territories, Canada, Catherine Tr Glass, Audrey R. Giles

International Journal of Aquatic Research and Education

Injury prevention programs that focus on boating and water safety in the Northwest Territories (NWT) have existed for decades; however, rates of boating incidents are much higher in the NWT than southern Canada. To better understand this health disparity, we engaged in community-based participatory research informed by postcolonial feminist theory to examine Aboriginal men’s understandings of the risk factors that contribute to boating incidents in Inuvik, NWT. Participants identified four main risk factors for boating incidents in Inuvik: 1) Gender, 2) age, 3) place, and 4) lack of boating safety education. As a result of these findings and the ways …

1883 - A Popular History Of California _ From The Earliest Period Of Its Discovery To The Present Time, Lucia Norman

Miscellaneous Documents and Reports

Published originally in 1867, this second edition included events that transpired during the intervening years (1867-1883). Topics covered included, but not limited to, were a eescription of California, it’s discovery, the sufferings of Cortez and his Followers, Spaniards neglect of California, the commerce of Spain disrupted by Privateers, Viscaino’s second expedition, Father Salva-Tierra at San Dionysio, the insurrection of the Pericues, earliest settlements in Upper California, the Discovery of the Bay of San Francisco, establishment of missions, Mission Delores, the state of the converted Indians, Captain John A. Sutter, Stockton subjugation of California, California ceded to the United States by …

1885 - History Of California, Volume 2, Theodore Henry Hittell

Miscellaneous Documents and Reports

Hittell devotes the first portion of Volume 2 to the Mexican Governors of California including Pablo Vicente de Sola, Luis Antonio Arguello, Jose Maria de Echeandia, Manuel Victoria, Pio Pico, Jose Figueroa, Mariano Chico, Nicolas Gutierrez. Juan Bautista Alvarado, Jose Manuel Micheltorena, Hittell also describes the people and circumstances leading up to the war between the United States and Mexico: John C. Fremont, Bear Flag Revolution, Texas Revolution, and Florida Treaty. The final portion of Hittell's book addressed the social and cultural aspects of life in Alta California, missionaries, physical geography, geology, botany and zoology of Alta California, Americans in …

1920 - Irrigation Of Twelve Million Acres In The Valley Of California; Robert Bradford Marshall

Miscellaneous Documents and Reports

By 1920, California's potential wealth in land reached into billions of dollars; 12,000,000 acres of available agricultural lands remained practically untouched. Marshall proposed a large plan that would make the Valley of California the world's greatest garden. The engineering plans for such a project must be comprehensive, for their execution must not only assure the complete reclamation of 12,000,000 acres of valley lands but must also effectively and forever control the river floods and insure safe and continuous river navigation throughout the year. The hydro-electric current generated along most of the streams would furnish all the power necessary for construction …

1939 - A History Of The Water Resources Branch, Us Geological Survey, Volume I, From Predecessor Surveys To June 30, 1919

Miscellaneous Federal Documents & Reports

By 1938, the systematic studies of the water resources of the country and, therefore, the antecedents of the Water Resources Branch of the USGS were 50 years old. The history of the Water Resources Branch presents the struggle to reach into the unknown and, by the development of methods and instruments as well as the training of personnel to create a new art and a new science. This is Volume I of a six volume chronological summaries of the activities and achievements of the Water Resources Division of the U.S. Geological Survey.

Composition And Ecology Of Avian Communities Along Elevational Gradients In Borneo, Ryan Christian Burner

LSU Doctoral Dissertations

A primary goal of ecology is to explain the diversity and distribution of organisms. Species distributions can be a function of abiotic factors, species interactions, dispersal limitations, and history, but the relative importance of these factors is widely debated. Elevational gradients are useful systems for studying these effects because many of these factors vary predictably with elevation, and because elevational gradients are replicated many times across the earth. However, few quantitative surveys of Southeast Asian bird communities have been conducted along elevational gradients. In this study, I surveyed birds using point counts and measured habitat and temperature across primary forest …

Good To The Last Drop: The Emergence Of Coffee Ringspot Virus, Michael Goodin, Antonia Dos Reis Figueira

Plant Pathology Faculty Publications

Two and a half billion times per day a human hand reaches for a fresh cup of coffee. Although arguably dispensable for life per se, with an industry value of US$174 billion, coffee provides the lifeblood that sustains economies of producing countries located in the “coffee belt” situated between the Tropics of Cancer and Capricorn. As a “solvent” in which many human interactions take place, coffee is witness to the broad spectrum of human activities from the mundane to the pleasurable and personal. However, in opposition to its economic, cultural, and physiological importance, diseases such as coffee rust (caused by …

Military Strategic Significance Of The Amu Darya Waterway In Ancient Period And Middle Ages, Y.A Karimov

Central Asian Problems of Modern Science and Education

In the article there is analyzed military strategic significance of the waterway of Amu Darya in ancient and Middle Ages on the basis of sources.

2018 - Status And Understanding Of Groundwater Quality In The Monterey-Salinas Shallow Aquifer Study Unit, 2012-13 - California Gama Priority Basin Project

Miscellaneous Monterey and San Luis Obispo County Documents and Reports

The study was designed to provide a statistically robust assessment of untreated-groundwater quality in the shallow aquifer systems. The assessment was based on water-quality samples collected by the U.S. Geological Survey from 100 groundwater sites and 70 household tap sites, along with ancillary data such as land use and well-construction information. The shallow aquifer systems were defined by the depth interval of wells associated with domestic supply. The Monterey-Salinas Shallow Aquifer study unit consisted of four study areas—Santa Cruz (210 km2), Pajaro Valley (360 km2), Salinas Valley (2,000 km2), and Highlands (5,250 km2).

The first primary component of this study—the …