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The Influence of a Return of Native Grasslands upon the Ecology and Distribution of Small Rodents in Big Bend National Park

Description: In the southwestern United States there is a delicate balance between the existing grasslands and the rodent fauna. The purpose of this investigation was to determine the influence of secondary succession of native grasslands upon the ecology and distribution of small rodents. Two methods of determining the rodent species were plot quadrates and trap lines using Sherman live traps.
Date: August 1971
Creator: Baccus, John T.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries

Big Thicket Plant Ecology: an Introduction

Description: Originally published in 1979, Geraldine Ellis Watson’s Big Thicket Plant Ecology is now back in print. This updated edition explores the plant biology, ecology, geology, and environmental regions of the Big Thicket National Preserve. After decades of research on the Big Thicket, Watson concluded that the Big Thicket was unique for its biological diversity, due mainly to interactions of geology and climate. A visitor in the Big Thicket could look in four different directions from one spot and v… more
Access: Restricted to UNT Community Members. Login required if off-campus.
Date: October 15, 2006
Creator: Watson, Geraldine Ellis
Item Type: Refine your search to only Book
Partner: UNT Press
open access

Our Planet, May 2010

Description: Magazine of the United Nations Environment Programme discussing worldwide environmental policies and other concerns. This issue is devoted to the economic importance of biodiversity and how protecting or restoring habitats can significantly reduce the costs in a variety of industries and infrastructures.
Date: May 2010
Creator: United Nations Environment Programme
Item Type: Refine your search to only Journal/Magazine/Newsletter
Partner: UNT Libraries
open access

Executive Order - Stewardship of the Ocean, Our Coasts, and the Great Lakes

Description: This order establishes a national policy to ensure the protection, maintenance, and restoration of the health of ocean, coastal, and Great Lakes ecosystems and resources, enhance the sustainability of ocean and coastal economies, preserve maritime heritage, support sustainable uses and access, provide for adaptive management to enhance understanding of and capacity to respond to climate change and ocean acidification, and coordinate with national security and foreign policy interests. This ord… more
Date: July 19, 2010
Creator: United States. President (2009- : Obama)
Item Type: Refine your search to only Text
Partner: UNT Libraries
open access

The State of the Hudson 2009

Description: This report describes the environmental quality of the Hudson River and its watershed, including issues such as pollution, population growth, and biodiversity. The report also describes the habitats of estuaries, watersheds, and rivers in general.
Date: 2009
Creator: New York (State). Hudson River Estuary Program.
Item Type: Refine your search to only Text
Partner: UNT Libraries
open access

Trophogenic Ecology of Selected Southwestern Reservoirs

Description: Three north central Texas reservoirs (Grapevine Reservoir, Lake Ray Hubbard, Lewisville Reservoir) were investigated in order to characterize the nutritional ecology, phytoplankton community structure, and primary productivity within the trophogenic zones of each. Emphasis was placed on elucidating the relative influences of the major nutrients (C, N, P, Fe, Si) and various other physico-chemical parameters on phytoplankton community biomass, structure, and productivity. Extensive physical, che… more
Date: May 1973
Creator: McDaniel, Michael David
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

PAN-EARTH Sub-Saharan Africa Workshop Report

Description: Report on the PAN-EARTH Sub-Saharan Africa Workshop. This workshop focused on the effects of global climate changes on the agriculture and ecology of the countries of sub-Saharan Africa.
Date: September 1989
Creator: Bezuneh, Taye; Harwell, Mark A.; Menyonga, Joseph Mufu; Acevedo, Miguel F.; Ackerman, Thomas P.; Aho, Nestor et al.
Item Type: Refine your search to only Report
Partner: UNT College of Engineering
open access

Taller de Trabajo: Evaluacion de Impactos de Cambios Climaticos Globales sobre el Sistema Agricola Venezolano

Description: This report discusses the Assessment of Impacts of Global Climatic Changes on the Venezuelan Agricultural System Workshop, as part of the PAN-EARTH Project, Venezuela case study.
Date: September 1991
Creator: Acevedo, Miguel F.; Andressen, Rigoberto; Calderon, Carlos; Capacho, Liliana; Bisbal, Evelyn; Hanes, Rexene et al.
Item Type: Refine your search to only Report
Partner: UNT College of Engineering
open access

Taller de Trabajo sobre evaluación de los Efectos Ecológicos de los Cambios Climáticos Globales

Description: This report discusses the Ecological Effects Assessment of Climatic changes in Venezuela Workshop, organized by the PAN-EARTH Project and the Centre for Ecology of the Venezuelan Institute for Scientific Research (IVIC). The main objective was the evaluation of the effects of climate changes on the main ecosystems in Venezuela using ecological models.
Date: July 1990
Creator: Acevedo, Miguel F.; Andressen, Rigoberto; Arends, Ernesto; Azocar, Aura; Borges, Felix; Corvo, Fernando et al.
Item Type: Refine your search to only Report
Partner: UNT College of Engineering
open access

Pyrethroid Insecticide Effects on Bluegill Sunfish (Lepomis Macrochirus) and the Impacts of Bluegill Predation on Invertebrates in Microcosms

Description: Concurrent outdoor aquatic 1950 L microcosm and 0.04 ha mesocosm experiments with bluegill sunfish evaluated the ecological impact of cyfluthrin. Cyfluthrin effects were not observed on mesocosm bluegill; a slight decrease in growth was observed in the microcosm bluegill. Otolith weight to length relationships between bluegill size-classes from microcosms, local streams, and a fish hatchery revealed no differences. Our results indicated bluegill predation impacts were slight on benthic inverteb… more
Date: May 1991
Creator: Morris, Rodney Gregg
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Swadhyaya's Dharmic Ecology

Description: Article discussing an essay by the author titled "Dharmic Ecology: Perspectives from the Swadhyaya Practitioners," discussing the Swadhyayis and their Vrksamandiras, or tree-temples, and dharmic ecology.
Date: 2010
Creator: Jain, Pankaj
Item Type: Refine your search to only Article
Partner: UNT College of Public Affairs and Community Service
open access

The Hindu Method to Save the Planet

Description: This paper discusses the Hindu religion and elements of ecology that relate to this religion. It describes some of the principles of Mahatma Gandhi and describes how these are important spiritually and ecologically.
Date: 2010
Creator: Jain, Pankaj
Item Type: Refine your search to only Paper
Partner: UNT College of Public Affairs and Community Service
open access

A Study of Student Environmental Knowledge and Attitudes in Selected High Schools in the Permian Basin Region of Texas

Description: This study is a partial replication of research conducted by Perkes (1973). The problem in this study is to assess the magnitude of the relationship between student knowledge of the environment, student gender, grade level, and size of school attended; and the level of attitudinal differences between students based upon student gender, grade level, and the size of school that students attend. Methods of data collection include the use of an environmental knowledge and attitude inventory used by… more
Date: December 1991
Creator: Manning, Sammy J. (Sammy Joe)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Harmful Algal Blooms in US Waters

Description: This document discusses the causes of harmful algae blooms and their impact on the environment, public health, and the economy. The document also discusses options for managing algal blooms and current federal efforts to address the problem.
Date: October 2000
Creator: National Science and Technology Council (U.S.). Committee on Environment and Natural Resources.
Item Type: Refine your search to only Text
Partner: UNT Libraries
open access

Marine Pollution Control Act

Description: This law was passed by the Republic of China (Taiwan) in order to control marine pollution, protect public health, and sustainably use marine resources.
Date: November 1, 2000
Creator: China (Republic : 1949- )
Item Type: Refine your search to only Text
Partner: UNT Libraries
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