This website provides a cumulative checklist for the lichen-forming, lichenicolous and allied fungi of the continental United States of America and Canade. The checklist consists of cumulative updates to the most recently published North American checklist by Esslinger and Egan (1995). The style and conventions for listings used in the publication are also generally followed here. ... [Information of the supplier, modified]
Algae are photosynthetic organisms that occur in most habitats. They vary from small, single-celled forms to complex multicellular forms, such as the giant kelps that grow to 65 meters in length. The Algal Collection of the U.S. National Herbarium is represented by nearly 300,000 accessioned and inventoried herbarium specimens preserved on herbarium sheets, microscope slides or liquid preparations. The collection is comprised of marine, estuarine, freshwater, terrestrial (including cave) and airborne algae and is worldwide in origin, with strong representation of tropical and subtropical marine algae. ... [Information of the supplier, modified]
The Bird Guide is part of a comprehensive offering of the Cornell Lab of Ornithology and presents a taxonomic database of the most abundant bird species of North America. A search in the database can be made with English or scientific names; browsing in the species list is only possible with English names. Because of this, a video gallery of some bird species is shown alongside the database. ... [Editorial staff vifabio]
This site concerns Amelanchier, a member of the Rosaceae (rose) family. The purpose of this site is to present information about the systematics and evolution of these attractive small trees and shrubs, which are commonly called shadbushes, serviceberries, juneberries, sugarplums, and numerous other common names. Amelanchier grows primarily in early successional habitats of the North Temperate Zone. The genus is most diverse taxomically in North America, especially in the northern United States and southern Canada, and is native to every state of the United States except Hawaii. These plants are valued horticulturally, and their fruits are important to wildlife. The systematics (taxonomy) of shadbushes has long perplexed botanists, horticulturalists, and others, as suggested by the range in number of species recognized in the genus from 6 to 33 in two recent publications (Landry 1975, Phipps et al. 1991; see references on Systematics page). A major source of complexity comes from the occurrence of apomixis (asexual seed production), polyploidy, and hybridization (see Evolution page). ... [Information of the supplier]
We are people who care about – and for – forests. American Forests, the oldest national nonprofit conservation organization in the country, advocates for the protection and expansion of America’s forests. Since 1990, we have planted nearly 40 million trees. We restore watersheds to help provide clean drinking water. We replant forests destroyed by human action and by natural disasters. Our work is guided by science: choosing the right mix of trees for particular locations, the best trees to act as windbreaks or to filter water, the trees that will provide wildlife habitat, or are most suitable for city streets and parks. Our advocacy is also guided by science: keeping policymakers informed about how trees interact with climate, sequester carbon, manage water, and benefit cities. We explain that ecological services from trees and forests have real economic value. We work in and advocate for federal, state, and urban forests, and sometimes our work takes us beyond US borders. Our hundreds of diverse projects have included: (a) Planting jack pine trees in Michigan’s Huron-Manistee National Forest to restore summer habitat for the endangered Kirtland’s warbler. (b) Restoring Cuyamaca Rancho State Park near San Diego after 95 percent of it was destroyed in a 2003 fire so hot that it killed the seeds that would have allowed the forest to regrow naturally. (c) Planting ponderosa pines and Douglas firs to help Colorado recover after a 2002 fire known as the Hayman Burn destroyed over 135,000 acres, including 8,000 acres surrounding the Chessman Reservoir, which supplies water to Denver. (d) Planting native trees in Michoacán, Mexico, to provide winter habitat for migrating monarch butterflies. ... [Information of the supplier]
Animal Diversity Web (ADW) is an online database of animal natural history, distribution, classification, and conservation biology at the University of Michigan. Animal Diversity Web has: ¹ Thousands of species accounts about individual animal species. These may include text, pictures of living animals, photographs and movies of specimens, and/or recordings of sounds. Students write the text of these accounts and we cannot guarantee their accuracy. ¹ Descriptions of levels of organization above the species level, especially phyla, classes, and in some cases, orders and families. Hundreds of hyperlinked pages and images illustrate the traits and general biology of these groups. Professional biologists prepare this part. ... [Information of the supplier]
The Birds of North and Middle America Checklist is the official source on the taxonomy of birds found in North and Middle America, including adjacent islands. This list is produced by the North American Classification Committee (NACC), an official committee of the American Ornithologists' Union. The geographic area covered includes North and Central America from the North Pole to the boundary of Panama and Colombia, including the adjacent islands under the jurisdiction of the included nations; the Hawaiian Islands; Clipperton Island; Bermuda; The West Indies, including the Bahama Islands, the Greater Antilles, Leeward and Windward Islands in the Lesser Antilles (ending with Grenada); and Swan, Providencia, and San Andrés Islands in the Gulf of Mexico. Greenland is not included in the coverage of the Seventh Edition of the Check-list, although it was included in earlier editions and will be in the next edition. ... [Information of the supplier]
The purposes of this Society are both educational and scientific. Our goals are to promote and encourage the discovery and exchange of information regarding primates, and anyone engaged in scientific primatology or who is interested in supporting these goals may apply for membership. The Society is established as a nonprofit corporation under the nonprofit laws of the State of Washington and the United States of America. ... [Information of the supplier]
This atlas explores the continental-scale relations between the geographic ranges of woody plant species and climate in North America. A 25-km equal-area grid of modern climatic and bioclimatic parameters was constructed from instrumental weather records. The geographic distributions of selected tree and shrub species were digitized, and the presence or absence of each species was determined for each cell on the 25-km grid, thus providing a basis for comparing climatic data and species' distributions. The relations between climate and plant distributions are explored in graphical and tabular form. The results of this effort are primarily intended for use in biogeographic, paleoclimatic, and global-change research. These web pages provide access to the text, digital representations of figures, and supplemental data files from USGS Professional Paper 1650, chapters A and B. A printed set of these volumes can be ordered from the USGS at a cost of US$ 63.00. ... [Information of the supplier]
Biological Control is the human use of beneficial organisms such as predators, parasites, or disease to regulate populations of harmful organisms such as insect pests. Click on topics to the left to find out more about biological control (biocontrol) and beneficial insects. [Information of the supplier]
