What are the AmeriFlux Core Sites?
AmeriFlux Core Sites are flux towers whose managing PIs and staff have agreed to deliver timely, high quality, continuous data to the AmeriFlux database. They receive operations and instrumentation support from the AmeriFlux Management Project (AMP). A primary goal for AMP is to ensure high quality data collection from these sites, which represent a broad range of ecosystems and locations in the continental United States. AMP receives funding support for the AmeriFlux core sites from Department of Energy, Office of Science, Terrestrial Ecosystem Science Program.
Currently 44 AMP-supported core sites exist, in 12 clusters, and 2 individual sites. Two more sites (US-MOz and US-ARM) have voluntarily agreed to the same data quality and delivery standards as the AMP-supported core sites, but do not receive AMP funding. The original sites were selected after careful review in 2012-2013, based on ecosystem representation, length of prior data record, quality of existing data, and established ability of site PIs to provide continuity in site management.
Note: A Core Site Cluster is a case where support for one primary core site has been leveraged to support several sites. For example, support for a data manager assures timely data review and processing for several sites.
Current Core Sites with Contacts
*Signifies this is the “primary” site for that core site cluster.
- US-Ha1* • Harvard Forest EMS Tower (HFR1): deciduous broadleaf forest
- US-Ha2 • Harvard Forest Hemlock Site: evergreen needleleaf forest: primarily hemlock
Bill Munger, Harvard University, email@example.com
Morgan Monroe State Forest (MMSF)
- US-MMS* • Morgan Monroe State Forest: deciduous broadleaf forest
ChEAS (Chequamegon Ecosystem-Atmosphere Study)
- US-Los* • Lost Creek: shrubby wetland (longest running wetland flux site in US)
- US-Syv • Sylvania Wilderness Area (shared with UMBS cluster): old-growth (350 y) mature northern hardwood forest
- US-PFa • Park Falls/WLEF (very tall tower): shrub/forest wetland, mixed conifer/hardwood (50 y)
- US-WCr • Willow Creek (mature hardwood): mature northern hardwood forest
New Mexico Elevation Gradient (NMEG)
- US-Mpj* • Pinon-juniper site (Mountainair): pinyon-juniper forest 2100 m
- US-Wjs • Juniper savanna site (Willard): open shrubland, 1925 m
- US-Vcp • Valles Caldera National Preserve: evergreen needleleaf forest (Ponderosa pine), 2542 m
- US-Vcm • Valles Caldera National Preserve: evergreen needleleaf (mixed conifer), 3000 m; wildfire in 2012
- US-Ses • Sevilleta (LTER desert shrubland): open shrubland, 1593 m
- US-Seg • Sevilleta (LTER desert grassland): desert grassland, 1622m
Marcy Litvak, University of New Mexico, firstname.lastname@example.org
Santa Rita/Walnut Gulch
- US-SRM* • Santa Rita Mesquite: semi-desert grassland
- US-Wkg • Walnut Gulch Kendall Grasslands: desert grassland, grazing
- US-Whs • Walnut Gulch Lucky Hills Shrub: Chihuahuan Desert shrubland
- US-SRG • Santa Rita Grassland: semi-desert grassland
Russell Scott, USDA-ARS Western Area, Russ.Scott@ars.usda.gov
- US-Ton* • Tonzi Ranch: Sierra Foothills—oak savanna, grazed
- US-Var • Vaira Ranch • Ione: Sierra Foothills—oak savanna, grazed
- US-Sne • Sherman Island (see Notes): Sacramento Delta—restored wetland Spring 2016
- US-Myb • Mayberry Wetland: Sacramento Delta—wetland restored 2010
- US-Twt • Twitchell Island: Sacramento Delta—rice paddy
- US-Tw1 • Twitchell Isl (wet west): Sacramento Delta—wetland restored 1997
- US-Tw3 • Twitchell Isl (alfalfa): Sacramento Delta—alfalfa, irrigated
- US-Tw4 • Twitchell Isl (wet east) SEE NOTES: Sacramento Delta —wetland restored 2014
Notes: Tw2 was shut down Jan 2015. Tw4 in same location took over after site was restored to wetland. Snd closed Apr 2015 (DWR restored as wetland). Flux equipment deployed in same location Spring 2016; tentative site ID US-Sne (pending AmeriFlux registration)
Dennis Baldocchi, UC Berkeley, email@example.com
North Carolina Loblolly Pine
- US-NC2* • NC Loblolly Plantation: SE Loblolly Pine, managed
- US-NC3 • NC Loblolly: SE Loblolly Pine, managed
- US-NC4 • Alligator River National Wildlife Refuge: coastal forested wetlands experiencing rising water level
- US-NR1* • Niwot Ridge Forest (LTER NWT1): subalpine conifer forest
Peter Blanken, University of Colorado, firstname.lastname@example.org; David Bowling, University of Utah, email@example.com; Russ Monson, University of Arizona, firstname.lastname@example.org
University of Michigan Biological Station (UMBS)
- US-UMB • University of Michigan Biological Station: deciduous broadleaf forest
- US-UMd • UMBS Disturbance: deciduous broadleaf forest, succession experiment
- US-Syv • Sylvania Wilderness Area (shared with ChEAS cluster): old-growth (350 y) mature northern hardwood forest
- US-Kon* • Konza Prairie LTER: grazed prairie, annual burn
- US-KFS • Kansas Field Station: grassland since 2007
- US-KFB • Konza Prairie LTER: prairie, woody encroachment, 4-y burn
- US-KLS • Kansas Land Institute: prairie
Nathaniel Brunsell, Kansas State University, email@example.com
- US-Ro4 • Rosemount: restored prairie. New late 2015. Replaces Ro3. See Note.
- US-Ro5 • Rosemount: corn/soybean rotation. Replaces Ro1. See Note.
- US-Ro6 • Rosemount: corn/soybean/winter cover rotation with minimal tillage. Replaces Ro2. See Note.
Note: Ro3—corn/soybean in permanent kura clover. Retired late 2015.
Note: Ro1-conventional corn/soybean rotation (no longer active). The system was moved to a new field in 2017 (US-Ro5).
Note: Ro2-Alternative agricultural site (no longer active). The system was moved to a new field (US-Ro6).
- US-Ho1* • Howland Forest (main tower): since 1996
- US-Ho2 • Howland Forest (west tower): since 1999
- US-Ho3 • Howland Forest (harvest site): since 2003
David Hollinger, USDA Forest Service Northern Area, firstname.lastname@example.org
- US-Me2* • Metolius-intermediate aged Ponderosa pine: evergreen needleleaf forest, 64 y
- US-Me6 • Metolius young pine burn: evergreen needleleaf forest, 20 y, post-fire
Beverly Law, Oregon State University, email@example.com
- US-Ne1* • Irrigated continuous maize
- US-Ne2 • Irrigated maize/soybean, no-till
- US-Ne3 • Rainfall maize/soybean, no-till
Andrew Suyker, University of Nebraska-Lincoln, firstname.lastname@example.org