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The Portal Project is a long-term ecological study that has been monitoring small mammal community responses to climate and experimental manipulation of dominant rodent species since 1977 in southeastern Arizona. Ecological Level: Community Biome: Desert Location: Southeastern Arizona (Lat/Long) Spatial Scale of data: Each plot is .25 ha. There are...MORE
This dataset describes long-term (1977-2002) experimental manipulations of ant, plant and rodent species in a desert ecosystem, among other alterations to the system. Data Location: Ecological Archives Site Location: Chihuahuan Desert, near Portal, Arizona (31 o 56' 20.29" N, 109 o 4' 47.44" W) Sites Georeferenced: Yes (not part of...MORE
This web site houses species accounts and georaphical data of mammals for north america including phylogenetic information and skull, bone, and teeth images. Dataset Location: http://www.mnh.si.edu/mna/main.cfm?lang=_en Site Location: North America Sites Georefferenced: Yes Comments: Multiple user interfaces are included within this dataset. An interactive map of the continent allow users...MORE
This web site hosts time series data sets from hundreds of independent projects aiming to understand the patterns and dynamics of bird populations across the western hemisphere. In particular, eBird connects remote-sensed data of landscape variables and human population to species ocurrence. Each data set consists of observational data, the...MORE
A large compilation of empirical data on how traits respond to environmental drivers. Dataset Location: The dataset is available both online where selected data for individual populations can be downloaded one at a time and as a Data Paper in Ecological Archives providing access to the entire dataset in one...MORE
This website and database hosts records of fossil pollen, charcoal, and mammal assemblages, as well as plant macrofossils, largely from North America, but also globally, throughout the Pleiocene-Quaternary (and Anthropocene). Also included are chronological controls that allow the use of the records through time from the last 5 million years...MORE
Database including information on distribution, taxonomy, and synonyms for birds. Data location: http://avibase.bsc-eoc.org/ Uses: Of particular interest is the tool for comparing two differt checklists. This provides information to help combine datasets that are based on different taxonomies, and the determine what has changed from one version of the taxonomy...MORE
This report documents an... "LCTA database update that provides selected ecological attributes (particularly for the nesting season) for 676 bird species occurring within the continental United States. This database upgrade provides land managers the capability to: (1) generate ecological guild-based summaries with no additional fieldwork, (2) identify specific groups of...MORE
The USGS Gap Analysis Program (GAP) is delineating species range and predicted distribution maps for more than 2,000 species that occur within the continental US as well as Alaska, Hawaii, Puerto Rico, and the U.S. Virgin Islands (we will make these maps and datasets available as they are completed). Our...MORE