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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
Quadrats (36 ungrazed; 15 grazed) in a Kansas mixed grass prairie that were censused annually from 1932 to 1972. Located in Hays, Kansas, all individual plants were mapped in these 1 m 2 quadrats located in a pasture owned by Fort Hays State University. Monthly precipitation and average temperature data...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
This dataset compiles the herbaceous plant response to 35 N fertilization experiments. Dataset Location: Ecologial Archives Site Location: Brooks Range, Alaska; Carpinteria Salt Marsh, California; Cedar Creek Natural History Area, Minnesota; Georgia Coastal Ecosystems LTER ; Jasper Ridge Biological Reserve, California; Kellogg Biological Staton LTER, Michigan ; Konza Prairie Biological...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