Digital Commons Network^™

Environmental Stress Effects On Vigor, Mortality, And Growth In Northern Hardwood Forests Along A Pollution-Climate Gradient, Neil W. Macdonald, John A. Witter, David R. Reed, Andrew J. Burton, Kurt S. Pregitzer, Hal O. Liechty

Peer Reviewed Publications

Concern exists over the effects of interacting environmental stresses on the ecological integrity of temperate forests. Coincidence of sensitivity to drought, increasing occurrence of defoliation, and elevated pollutant deposition has produced speculation that northern hardwood forests may be susceptible to the increased climatic stresses projected for the Great Lakes region. The objective of our study was to examine relationships among environmental stress factors, vigor, mortality, and growth in northern hardwood forests located along a pollution-climate gradient in the Great Lakes region. Between 1987 and 1993, we quantified climatic variables, pollutant deposition, insect defoliation, and tree vigor and growth at five …

Stream Organic Matter Budgets, J.R Webster, Judy L. Meyer

Long Term Ecological Research Network

This analysis of organic matter dynamics in streams has 3 objectives: 1) to explore the relationships between physical characteristics of streams and their watersheds (climate, geomorphology) and steam organic matter dynamics using data from a broad geographic area; 2) to compare steam organic matter dynamics in a diverse array of steams in order to suggest determinants of observed patterns; and 3) to reveal deficiencies in currently available data on organic matter dynamics in steams. Streams were included in this analysis not to represent the global diversity of stream types but because organic matter data were available. In the introductory chapter …

Global Trends And The Future Of National Forests, Nels C. Johnson

The National Forest Management Act in a Changing Society, 1976-1996: How Well Has It Worked in the Past 20 Years?: Will It Work in the 21st Century? (September 16-18)

23 pages.

Contains 3 pages of references.

Improving The Validation Of Model-Simulated Crop Yield Response To Climate Change: An Application To The Epic Model* Jour. Ser. No. 11339 Nebraska Ag. Res. Div., William E. Easterling, Xiafen Chen, Cynthia Hays, James R, Brandle, Hehui Zang

School of Natural Resources: Faculty Publications

Crop models have been used extensively to simulate yield response to various scenarios of climate change. Such simulations have been inadequately validated, limiting their utility in policy analysis. In this research, it is argued that the performance of crop models during recent years of extreme weather conditions relative to current normals may give a better indication of the validity of model simulations of crop yields in response to climate change than performance during the full range of climate conditions (as is done now). Twenty years of the climate record (1971-1990) are separated into different growing season temperature and precipitation classes …

The Ethical Aspects Of Biodiversity Protection: Duties To Human Beings And Duties To Other Species, Dale Jamieson

Biodiversity Protection: Implementation and Reform of the Endangered Species Act (Summer Conference, June 9-12)

11 pages.

Contains 2 pages of references.

Environmental Indices For The Twin Cities Metropolitan Area (Minnesota, Usa) Urban Heat Island - 1989, Paul E. Todhunter

Geography & Geographic Information Science Faculty Publications

A homogeneous, high-density, daily maximum and minimum air temperature dataset was assembled for the Twin Cities Metropolitan Area (TCMA), Minnesota, USA, to conduct basic urban climatological investigations on the spatial structure and temporal-scale dependence of the urban heat island, and to quantify the urban heat island effect upon several derived environmental indices. By combining data from National Weather Service cooperative stations, the University of Minnesota-St. Paul field station, and the previously unused KSTP-TV cooperative weather station network, a merged dataset of 26 stations was assembled for the TCMA for the year l989. Extensive quality control was conducted to identify suspect …

G96-1311 Global Warming: What Is Known And Why Nebraska Agriculture Should Care, William E. Easterling, Cynthia Hayes

University of Nebraska-Lincoln Extension: Historical Materials

The purpose of this NebGuide is to review the facts of global warming, to point out what is sheer speculation, and to suggest why Nebraska agriculture should care about global warming.

Climatologists talk about global warming one year and the next year they talk about global cooling! Depending on the time periods involved, both views may be correct. Over the next few hundred years, the earth may undergo a general cooling trend. This trend is consistent with the regular shifts into and out of ice age conditions that have characterized the earth's climate history of the last 50,000 years. However, …

Comparative Risk Assessment In New York, Michael B. Gerrard, Deborah Goldberg

Faculty Scholarship

Comparative risk assessment (CRA) is the examination of the relative risks posed by different dangers, with a view to deciding which dangers deserve the most governmental attention. CRA frequently tries to reduce different problems to a common metric, usually the statistical lives saved by a program, so that apples can be weighed against oranges. This article will discuss and assess the growing use of CRA in New York State.

There are two principal arguments for the use of CRA in the environmental context. The first is that we do not have unlimited resources; we cannot move against all problems simultaneously. …

1995 Proposed Program Of Work For Lter, Long Term Ecological Network

Long Term Ecological Research Network

Version II of the Proposed Program of Work for LTER Network Office in 1995-1996.

1995 Lter Network News And Mosaic Brochure Project, Maya Isabel Lazzaro, Long Term Ecological Research

Long Term Ecological Research Network

LTER Network News from 1995.

LTER Network News began in 1987.

1994 Ieee Computer Society Press Reprint, James W. Brunt

Long Term Ecological Research Network

Effective management of ecological research data can insure the security and accessibility of data that cannot be collected again under the same conditions and plays a key role in every aspect of the research project from experimental design to publication. Commercial relational database management software, developed an adequate solution for long-term scientific data management. An archive file format provides the standard around which a data file management system is implemented. The system works within the parameters of existing components of the operating system software. Data filters and data engines are used to communicate data to and from applications. This paper …

Lter Correspondence & Letters, Jerry F. Franklin

Long Term Ecological Research Network

1st. Letter written by Jerry F. Franklin, chair of LTER Network, addressed to David Greenland of the department of Geography. Franklin extends an invitation to the upcoming Coordinating Committee meeting taking place from October 19-21.

2nd. Letter written by Jerry F. Franklin, chair of LTER Network, addressed to Joshua Greenberg of he College of Forest Resources. Franklin extends an invitation to the upcoming Coordinating Committee meeting taking place from October 19-21.

3rd. Letter written by Jerry F. Franklin, chair of LTER Network, he writes on the significant decisions taken place over the LTER/CC meeting held on April 22-24.

4th. Letter …

Agenda Lter/Coordinating Committee Meeting, April 22-24, 1994, Long Term Ecological Research

Long Term Ecological Research Network

The latest agenda update for the LTER April 1994 Coordinating Committee Meeting.

Analysis Of An Iowa Aridity Index In Relationship To Climate And Crop Yield, Soumare Harouna, R. E. Carlson

Journal of the Iowa Academy of Science: JIAS

An aridity index and its components, temperature and precipitation, for the period from 1900 through April 1993 were defined and characterized. This index describes the anomalous behavior of both temperature and precipitation over time. Our intent was to examine climate variability in Iowa. Moving mean and standard deviations over various lengths of time were calculated from three time series. We found that these indices fluctuate considerably from year to year and from month to month. The lowest aridity index values occurred in the recent summer of 1992, and the highest occurred during the very drought-prone 1930s. The 12-month moving mean …

The Role Of Risk Analysis In The 1992 Framework Convention On Climate Change, Martin J. Lalonde

Michigan Journal of International Law

This Note examines the role that risk analysis played in fashioning the Framework Convention on Climate Change and argues that risk analysis should play a significant part in implementing the Convention.

Integrated Environmental Control: The Expanding Matrix, Lakshman Guruswamy

Publications

Professor Guruswamy addresses the configuration of forces creating global warming, and canvasses the action necessary to deal with this challenge. He identifies key reasons accounting for the failure of the United States to take adequate measures to control emissions of carbon dioxide at the national level, and for resisting international attempts to do so. Guruswamy argues that the problem of global warming should be dealt with within the framework of Integrated Environmental Control (IEC)--a radical approach to pollution prevention and modification of product demand. He reasons that by encompassing energy policy within the matrix of pollution control, IEC will promote …

Iowa's Climate As Projected By The Global Climate Model Of The Goddard Institute For Space Studies For A Doubling Of Atmospheric Carbon Dioxide, E. S. Takle, S. Zhong

Journal of the Iowa Academy of Science: JIAS

Results of a global climate model that simulates climate under a doubling of atmospheric carbon dioxide (estimated to occur by the latter half of the twenty first century) have been interpolated to Iowa. Summer temperatures under such a doubling are projected to rise by 4 to 7°F (2.2 to 3.9°C) and winter temperatures by 10 to 11° (5.6 to 6.1°C). Estimates of space heating and cooling demands from these data suggest a 30 to 35% decrease in space heat demand and a 200 to 300% increase in space cooling demand. Temperature variability is projected to decrease. Precipitation estimates from global …

Global Warming And Property Interests: Preserving Coastal Wetlands As Sea Levels Rise, Robert L. Fischman

Articles by Maurer Faculty

No abstract provided.

Energy And The Environment: Confronting Common Threats To Security, Lakshman Guruswamy

Publications

No abstract provided.

Using Management Techniques To Solve Environmental Problems, Patrick D. Kelly

RISK: Health, Safety & Environment (1990-2002)

Arguing that little effective progress is being made in solving problems of varying urgency, this paper suggests a leadership role for science and engineering societies. It proposes that such societies attempt to prioritize problems and attempt to focus public awareness (and calls to action) in a more systematic way.

Assessing The Costs Of Adapting To Sea-Level Rise: A Case Study Of San Francisco Bay, Peter H. Gleick, Edwin P. Maurer

Civil, Environmental and Sustainable Engineering

Atmospheric concentrations of carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), tropospheric ozone (O3), chlorofluorocarbons (CFCs), and other trace gases are growing due to human activities. These trace gases are transparent to incoming solar radiation and trap outgoing infrared (heat) radiation, acting like a blanket to warm the Earth. Without any of these gases in the atmosphere, the surface of the Earth would be about 35 C (70 F) colder than at present, and life, if any could exist, would be quite different. This natural greenhouse effect is being intensified by human activities that accelerate the emission of these trace …

Climate Change And The Potential Impact On The Soil Resource, J. L. Hatfield

Journal of the Iowa Academy of Science: JIAS

Climatic change will lead to changes in the carbon dioxide C0_2, temperature, and precipitation. There have been many predictions of the effect of climatic change on plant growth but none on the soil parameters or water use. To fully understand the implications on soil management from climate change the expected changes in soil temperature, water use, and water and nutrient use efficiency need quantification.

Global Warming: Integrating United States And International Law, Lakshman D. Guruswamy

Publications

No abstract provided.

Stratospheric Ozone Depletion: A Challenge For International Environmental Law And Policy, Ved P. Nanda

Michigan Journal of International Law

The first part of the article addresses the phenomenon of stratospheric ozone depletion, noting significant recent developments, and discussing their ramifications. This is followed by an inquiry into pertinent international and U.S. responses to ozone depletion. Recent developments in international environmental law provide an appropriate context for this inquiry. The adequacy of these responses is assessed in the next section. Recommendations follow in the concluding section.

An Investigation Into The Design Qualities, Ecological Requirements, And Potential Use Of Some Native Trees And Shrubs Of The Mountains Of Northeastern Utah, Richard K. Sutton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purposes of this paper are threefold: 1) To provide a justification for the increased use of native plants in mountain land development, not only in northeastern Utah, but in the entire western United States. 2) To investigate and delineate what the physical needs of a plant materials list are. 3) To provide a nearly comprehensive list of basically unused plants native to northeastern Utah and to highlight their landscaping potentials based on the earlier investigation.

Also touched upon, to help landscape architectural students and professionals alike, are two cursory case studies and a chapter which deals briefly with the …