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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 dataset decribes the response of grassland butterfly diversity to habitat and urbanization. Dataset Location: Ecological Archives Site Location: Boulder County Open Space, Boulder, Colorado (40 o 00'54" N, 105 o 16'12" W) Sites Georefferenced: No Timespan: 1999-2000 Sampling Frequency: twice 1999 (July, August), thrice 2000 (June, July, August) Methods:...MORE
This web site hosts information about the entire fossil record, including information about fossil collections, individual plants and animals, taxonomic groups, references to publications, stratigraphic units, time scales, and time intervals. Data Location: paleobiodb.org Data Available: collection, occurrence, specimen records, taxonomic names/opinion, measurements of specimens Comments: Tools are available on...MORE
This web site hosts data from research in metropolitan Baltimore as a part of the Long Term Ecological Research Network. Data Location: https://baltimoreecosystemstudy.org/bes-data-catalog/ Site Location: Gwynns Falls watershed (76 o 30' N, 39 o 15' W) Baltimore, Maryland Datasets Available: THEMES - biodiversity, demographic/social, education, meteorology, modeling, patches, public health...MORE
This web site hosts data collected for the Central Arizona-Phoenix Long Term Ecological Research Station in the arid mentropolis of Phoenix. Data Location: http://caplter.asu.edu/data/ Site Location: downtown Pheonix and the surrounding arid ecosystems Datasets Available: THEMES - land-use, land-cover, and land architecture; climate, ecosytems, and people; water dynamics, biogeochemical patterns,...MORE
Please see details in the cited publication. In addition to the presence absence data, there are also photos of each subplot from 2005 onward. Nelis, L.C. and J.T. Wootton, Treatment-based Markov chain models clarify mechanisms of invasion in an invaded grassland community. Proceedings of the Royal Society Biological Sciences Series...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
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
Assessing the direct and indirect consequences of nonrandom species removal within guilds of strongly interacting species, such as large mammalian herbivores, is an important goal in basic and applied ecology. The ecological impacts of such perturbations are often contingent on abiotic conditions, which have hindered efforts to generalize the results...MORE