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Botany
The science of plants.
Subtopics:
Palynology (4 items)
Phycology (3 items)
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Results 1 - 25 of 25 listed alphabetically [list by similarity]
PDF Algal toxins [More info]
Chapter of Field Manual of Wildlife Diseases on algal toxins, red tide toxins, phycotoxins, dinoflagellates, cyanobacterium, and bird mortality due to algal toxicosis.
PDF Bryophytes and lichens, small but indispensable forest dwellers [More info]
Description of bryophytes (mosses, liverworts, and hornworts) and lichens (dual organisms of a fungus and an alga or a cyanobacterium) that are part of forest ecosystems in the Pacific Northwest with information on habitat and conservation.
PDF Buffelgrass-Integrated modeling of an invasive plant [More info]
Buffelgrass (Pennisetum ciliare) poses a problem in the deserts of the United States, growing in dense stands and introducing a wildfire risk in an ecosystem not adapted to fire. This report explains what we are doing to help mitigate its effects.
Characterization of macroalgal epiphytes on Thalassia testudinum in Tampa Bay, Florida [More info]
Identification of epiphytes (plants obtaining moisture and nutrients from the air and rain and usually living on another plant) on seaweed in Tampa Bay, Florida. Abstract of symposium presentation with photos.
Construction and installation of dendrometer bands for periodic tree-growth measurements [More info]
Use and function of dendrometer bands to make short-term repeated measurements of tree-stem growth. Photo illustrations of procedures and equipment.
Diatoms: applications [More info]
Use of diatoms in biostratigraphy, coastal and estuarine studies, paleoceanology, paleoliminology, earthquake studies, environmental quality and forensic studies. Includes listing of USGS diatom projects and links to other diatom websites.
Digital representation of tree species range maps from "Atlas of United States trees" by Elbert L. Little, Jr. (and other publications) [More info]
Maps of the ranges of tree species in North America compiled by Elbert Little and others were digitized for use in USGS vegetation and climate modeling studies. Can be downloaded as ArcView shapefiles and in PDF graphic files.
Fort Collins Science Center [More info]
Homepage of the Fort Collins Science Center in Colorado with links to programs in ecological research programs, staff directory, products library, news and events, and research features and spotlights.
Grizzly bear and black bear ecology [More info]
Summaries of research projects on black bear and grizzly ecology and ecosystems supporting the populations and bibliography of related publications.
Historical landcover changes in the Great Lakes region [More info]
Results of a study that provides a regional vegetation history of the Great Lakes area during the last 150 years compared to the preceding 1,000 years.
History and ecology of mangroves in the Dry Tortugas [More info]
Fact sheet on the historic and current conditions of mangroves of Dry Tortugas National Park, a cluster of islands and coral reefs west of Key West, Florida. Mangroves and nesting frigate bird colonies are at risk to destruction by hurricanes.
Limber pine communities [More info]
Report on status and trends of limber pine communities with references.
NPElement: A database of lichen elemental concentrations in the U.S. national parks [More info]
Database providing concentration of heavy metals, nutrients, and trace elements in 75 species of lichens sampled in 43 national park units in 24 states.
NPLichen: A database of lichens in the U.S. national parks [More info]
Web interface for a database of documented occurrences of lichens in units of the U. S. National Park System. The records were obtained from the scientific literature, from National Park Service reports, and from selected herbaria.
National Water-Quality Assessment (NAWQA) Program: protocols for the analysis of algal samples collected [More info]
Summary of protocols describing procedures for laboratory analysis of algae samples collected by the U.S. Geological Survey's National Water Quality Assessment Program (NAWQA). Includes full document to be downloaded in PDF format.
Online guide to the continental Cretaceous-Tertiary boundary in the Raton basin, Colorado and New Mexico [More info]
Field guide describing the geology and paleontology of the continental Cretaceous-Tertiary boundary in the Raton basin, Colorado and New Mexico.
PDF Operational guidelines for geological fieldwork in areas endemic for Coccidioidomycosis (Valley Fever) [More info]
Report giving operational guidelines that will lower the risk of coccidioidomycosis (Valley fever) for individuals who work outdoors in areas where the disease is endemic.
Paleontological analyses [More info]
Links to USGS capabilities in paleontological analyses of fossils such as mollusks, diatoms, palynomorphs, ostracodes, calcareous nannofossils, etc. Includes descriptive information, technique, equipment, and contacts for each fossil group.
Sago pondweed (Potamogeton pectinatus L.): a literature review [More info]
Literature review of sago pondweed, a submersed angiosperm that attracts waterfowl, but is also a nuisance plant that clogs irrigation systems. Includes classification, distribution, habitat, physiology, management, and economics.
Salvinia molesta, Salvinia weevil, Salvinia minima [More info]
Life history and identification of Salvinia species, a floating, rootless tree fern and a noxious aquatic weed. Site includes posters, instructions on submitting sightings, how to subscribe to a listserv on the weed, and a bibliography.
Standardized National Vegetation Classification System [More info]
Document on the National Vegetation Classification Standard with information on applications, background, development, characteristics, nomenclature standards, relationship to other classifications, and how to do vegetation mapping.
PDF The saga of leafy spurge (Euphorbia esula) in the northern Great Plains [More info]
Explains why this invasive plant is successful in taking over land in many northern states, and what might be done to impede its dominance.
USGS-National Park Service (NPS) Vegetation Mapping Program [More info]
The USGS-NPS Vegetation Mapping Program is a cooperative effort with the National Park Service (NPS) to classify, describe, and map vegetation communities in over 270 U.S. national park units with links to overview, standards, products, and applications.
Western lake catchment systems - Bear Lake region, Idaho-Utah [More info]
Homepage for project on Bear Lake, Idaho-Utah, to study past climate change and effect on lake catchment basins. Includes link to summary, personnel, geology, methods used including coring and seismic surveying, and publications.
Whitebark pine communities [More info]
Report on status and trends of whitebark pine communities with references to related publications.
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