103 Matching Results

Search Results

UNEP 2000 Annual Report

Description: The UNEP annual report provides an overview of UNEP's activities for the year of 2000. The report also reflects on the possible challenges that the new millennium "the Environment Millennium" may bring.
Date: 2001
Creator: United Nations Environment Programme
Partner: UNT Libraries

Pollution in Ecosystems

Description: Lesson plan containing a collection of activities and resources regarding the study of ecosystems that meet state education standards and national sustainability standards for the 6th grade level.
Date: June 26, 2014
Creator: Ibarra, Vanessa
Partner: UNT Office of Sustainability

Extinction and Endangerment

Description: Lesson plan containing a collection of activities and resources regarding extinction and endangerment that meet state education standards and national sustainability standards for the 6th grade level.
Date: June 26, 2014
Creator: Treadway, Heather
Partner: UNT Office of Sustainability

La Reserva De Biosfera Cabo De Hornos: Un Desafío Para La Conservación De La Biodiversidad E Implementación Del Desarrollo Sustentable En El Extremo Austral De América

Description: Article discussing biodiversity conservation and implementation of sustainable development in southernmost South America and the new biosphere reserve in Cape Horn, located in Antarctica Chilena Province.
Date: 2007
Creator: Rozzi, Ricardo, 1960-; Massardo, Francisca; Mansilla, Andrés O.; Anderson, Christopher B.; Berghöfer, Augustin; Mansilla, Miguel et al.
Partner: UNT College of Arts and Sciences

Integrando las Ciencias Ecológicas y la Ética Ambiental en la Conservación Biocultural de los Ecosistemas Templados Subantárticos de Sudamérica

Description: This article is in a special issue of Environmental Ethics based on the workshop "Integrating Ecological Sciences and Environmental Ethics: New Approaches to Understanding and Conserving Frontier Ecosystems," held in the temperate sub-Antarctic region of southern Chile, in March 2007.
Date: 2008
Creator: Rozzi, Ricardo, 1960-; Armesto, Juan J., 1953- & Frodeman, Robert
Partner: UNT College of Arts and Sciences

Integrating Ecological Sciences and Environmental Ethics into Biocultural Conservation in South American Temperate Sub-Antarctic Ecosystems

Description: This article is in a special issue of Environmental Ethics based on the workshop "Integrating Ecological Sciences and Environmental Ethics: New Approaches to Understanding and Conserving Frontier Ecosystems," held in the temperate sub-Antarctic region of southern Chile, in March 2007.
Date: 2008
Creator: Rozzi, Ricardo, 1960-; Armesto, Juan J., 1953- & Frodeman, Robert
Partner: UNT College of Arts and Sciences

Bryophyte-Cyanobacteria Associations during Primary Succession in Recently Deglaciated Areas of Tierra del Fuego (Chile)

Description: Article on bryophyte-cyanobacteria associations during primary succession in recently deglaciated areas of Tierra del Fuego (Chile).
Date: May 12, 2014
Creator: Arróniz-Crespo, María; Pérez-Ortega, Sergio; De Los Ríos, Asunción; Green, T. G. Allan; Ochoa-Hueso, Raúl; Casermeiro, Miguel Ángel et al.
Partner: UNT College of Arts and Sciences

Protocol amending the 1916 Convention for the Protection of Migratory Birds : message from the President of the United States transmitting a protocol between the United States and Canada amending the 1916 Convention for the Protection of Migratory birds in Canada and the United States, with related exchange of notes, signed at Washington on December 14, 1995

Description: This treaty is an amendment between the United States and Canada to the statute making it unlawful to pursue, hunt, take, capture, kill or sell certain birds. The statute does not discriminate between live or dead birds and also grants full protection to any bird parts including feathers, eggs and nests.
Date: 1996
Creator: United States. President (1993-2001 : Clinton) & Christopher, Warren
Partner: UNT Libraries

Our Changing Planet: The U.S. Climate Change Science Program for Fiscal Year 2007

Description: This Fiscal Year 2007 edition of Our Changing Planet describes a wide range of new and emerging observational capabilities which, combined with the Climate Change Science Program’s analytical work, lead to advances in understanding the underlying processes responsible for climate variability and change. The report highlights progress in exploring the uses and limitations of evolving knowledge to manage risks and opportunities related to climate variability, and documents activities to promote cooperation between the U.S. scientific community and its worldwide counterparts.
Date: November 2006
Creator: U.S. Climate Change Science Program
Partner: UNT Libraries

Structure, Composition, and Regeneration of Cross Timbers Forest Fragments in Different Land Use Contexts

Description: Throughout its current range, the Cross Timbers forest ecosystem is vulnerable to land-use change. In this study, we examined the surrounding land use matrix on the vegetation structure, composition and regeneration of six Cross Timbers forest fragments in Denton County, Texas (north of the Dallas-Fort Worth metroplex). Two fragments adjacent to agricultural land, two to residential neighborhoods, and two formally protected forest sites were selected. In summer 2015, five 100 m2 plots were randomly established in each fragment at least 200 meters from the edge. In each plot, all live and dead trees ≥ 3 cm diameter were identified and their height and diameter at breast height (DBH at 1.3 m aboveground) measured. Evidence of dumping (presence of trash) was recorded as an index of human frequentation. Differences in vegetation structure among the forest fragments were found. Most notably, fragments adjacent to agriculture contained 25% to 50% fewer trees per hectare than all other sites (Kruskal-Wallis, p < 0.02), especially trees <10 cm DBH. However, residential fragments had fewer trees that were ≥15 cm DBH compared to the other fragments, indicating that these are the youngest of the forest patches surveyed. Trash was observed in 60% of plots surveyed at residential forest sites, showing high levels of human frequentation compared to the protected and agricultural forest sites. Agricultural sites contained the lowest number of recorded tree species and were most similar to each other, sharing 91% of species. These findings indicate that surrounding land use affects forest structure and composition, consequently affecting valuable ecosystem services including wildlife habitat, aesthetics and recreation.
Date: May 2015
Creator: Dunn, Ingrid
Partner: UNT Libraries

Global Climate Change Impacts in the United States

Description: This book summarizes the science of climate change and the impacts of climate change on the United States, now and in the future. It is an authoritative scientific report written in plain language, with the goal of better informing public and private decision making at all levels.
Date: 2009
Creator: U.S. Global Change Research Program
Partner: UNT Libraries Government Documents Department

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.
Partner: UNT Libraries