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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 data set describes differences in macroalgal stands and mussel beds between ice scour disturbances in sheltered intertidal shores between 1997-2007. Dataset Location: Ecological Archives Site Location: Swan's Island, Maine (44 o 10' N, 68 o 25' W) Sites Georeferenced: No Timespan: 1997-2007 Sampling Frequency: Annually Methods: Barnacle recruitment was...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 provides records of density and cover meaurements of an intertital community. Two datasets have been published spanning 1996-2007. Dataset Location: Ecological Archives (1996-2002); Ecological Archives Update (2003-2007) Site Location: Swan Island, Gulf of Maine (44 o 10' N, 68 o 25 W) Sites Georefferenced: Yes Timespan: 1996-2007 Sampling...MORE
Includes all Neotropical stingless bee (Hymenoptera: Apidae, Meliponini) species, with trait data collected from the literature and unpublished data. Traits include worker body size, colony size, nest description, foraging strategy, aggressiveness, flight range, etc. All data entered have been matched to current species names, following the Moure catalog ( http://moure.cria.org.br/index...MORE
Includes published and unpublished records of Neotropical stingless bee (Hymenoptera: Apidae, Meliponini) plant usage determined through both transect studies and pollen analyses. I have matched data to current bee species names following the Moure catalog ( http://moure.cria.org.br/index ), and plant classification following GBIF ( http://data.gbif.org/welcome.htm ). Dataset Location: Please contact...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