1,119 Works

Cone production of upper slope conifers in the Cascade Range of Oregon and Washington, 1959 to present

Andrews Forest LTER Site & Jerry F. Franklin
Seed supply is a key feature of tree population dynamics, and seed production may be indicative of environmental and biological drivers. This study examines cone production in upper-slope, true fir-hemlock forests of the Pacific Northwest, starting in 1959 to the present. Annual surveys of cone counts of Abies spp. (A. amabilis, A. concolor, A. grandis, A. lasiocarpa, A. magnifica, A. procera), Pinus spp. (P. engelmannii, P. lamberti, P. monticola), and Tsuga spp. (T mertsiana) have...

MCR LTER: Coral Reef: Community structure outdoor flume data in support of Edmunds 2019 Marine Biology

Moorea Coral Reef LTER, Peter Edmunds, Steve Doo & Robert Carpenter
This dataset contains data in support of Edmunds, P.J., S.S. Doo, R.C. Carpenter, 'Changes in coral reef community structure in response to year-long incubations under contrasting pCO2 regimes', Marine Biology, 2019, doi:10.1007/s00227-019-3540-2. Here, the effects of ocean acidification (OA) on back reef communities from Mo'orea, French Polynesia (17.492S, 149.826W), were tested from 12 November 2015 to 16 November 2016 in outdoor flumes maintained at various mean pCO2 levels. Change in mass and percent cover were...

Streamflow for Green Lake 4, 1981 - ongoing.

Nel Caine
Some of these data were published as a data report: Caine, N., and L. Buchanan. 1987. Streamflow data from the Green Lakes Valley, 1981-1986. University of Colorado Long-Term Ecological Research Data Report 87/4. 34 pp. This is a summary of discharges from the upper Green Lakes Basin, is based on stage records from the outlet of Green Lake 4, and consists of daily flow volumes. NOTE: The LTER data portal display does not display important...

Streamflow data for Saddle stream, 1999 - ongoing.

Caine, T. Nelson (Nel)
This is a summary of discharges from the stream draining Niwot Ridge Saddle to the south and is based on stage records gauged at a timber weir with a 120 degree V-notch plate, located 30 m upstream of Green Lakes road. It consists of daily flow volumes.

Streamflow for Martinelli basin, 1982 - ongoing.

Caine, T. Nelson (Nel)
Some of these data were published as a data report: Caine, N., and L. Buchanan. 1987. Streamflow data from the Green Lakes Valley, 1981-1986. University of Colorado Long-Term Ecological Research Data Report 87/4. 34 pp. This is a summary of discharges from the Martinelli Basin and is based on stage records from the outlet channel 30 m below the road at the foot of the basin. NOTE: The LTER data portal display does not display...

A monthly shortwave radiative forcing kernel for surface albedo change using CERES satellite data

Ryan M. Bright & Thomas L. O'Halloran
We present a radiative kernel for surface albedo change founded on a novel, simplified parameterization of shortwave radiative transfer driven with inputs from the Clouds and the Earth’s Radiant Energy System (CERES) Energy Balance and Filled (EBAF) Edition 4.0 products based on a 16-year climatology (2001-2016). Both monthly temporally-explicit and monthly climatological mean CERES albedo change kernels (CACK) are provided with their respective uncertainty layers. Octave script files for generating monthly CACK from CERES EBAF...

Rainfall Stable Isotopes collected at Florida International University-MMC (FCE LTER), Miami Florida, from October 2007 to Present

Rene Price
A precipitation collector was placed on top of the roof of the HLS-1 buidling at the main campus of FIU. The collector only. opens when the sensor is activated by water and closes when it is not raining to prevent evaportation. Water samples were collected and analyzed for stable isotopes of hydrogen and oxygen.

FAB 1 Forests and Biodiversity Experiment - High density diversity experiment:Soil lipid (P/NLFA) and AMF (spore and sequence) data from selected plots

Jake Grossman
A forest biodiversity experiment (FAB) focused on trees of our region investigates the consequences of multiple dimensions of tree diversity for soil, food webs, plant communities and ecosystems. FAB is designed to unravel effects of three forms of biological diversity: species richness (SR), functional diversity (FD), and phylogenetic diversity (PD). We define FD as the representation of multiple traits of leaves, roots, seeds, and the whole organism that are correlated with species positions along gradients...

Underwater temperature and light data from 3 mini-buoys in Lake Sunapee, NH, USA from June – October 2018

Nicole K Ward, Jennifer A Brentrup, Ava E Johnson, Cayelan C Carey, Kathleen C Weathers & June R Fichter
Three mini-buoys were deployed during a portion of the ice-off period of 2018 in Lake Sunapee, NH, USA with HOBO temperature sensors at various depths below the water’s surface. Temperature data were collected using HOBO pendant temperature and HOBO pendant temperature/light sensors at descending depths between 0.1m and the nearest whole and/or half meter increments below the water surface and above the sediment/water interface at 10 minute intervals. The buoys were located in cove areas...

McMurdo Dry Valleys Underwater Photosynthetically Active Radiation (PAR) from in-situ Lake Primary Production Experiments in the McMurdo Dry Valleys of Antarctica, 1995-present

John Priscu
As part of the Long Term Ecological Research (LTER) project in the McMurdo Dry Valleys of Antarctica, PAR is measured at one depth during primary production experiments in Dry Valley Lakes. This data set quantifies instantaneous underwater PAR at 10-meter depths in Lakes Bonney and Hoare, and at 7-meter depth in Lake Fryxell (depths vary after 2008, check data file for actual depth). Ambient PAR was also measured at the air-ice interface from each of...

McMurdo Dry Valleys Underwater Photosynthetically Active Radiation (PAR) Vertical Profiles from Lakes in the McMurdo Dry Valleys of Antarctica, 1993-present

John Priscu
As part of the Long Term Ecological Research (LTER) project in the McMurdo Dry Valleys of Antarctica, lakes were monitored for photosynthetic active radiation (PAR) levels. This data set exemplifies the vertical profile of underwater PAR profiles in perennial ice covered lakes and ambient PAR measured at the air-ice interface. Profile data can be used to calculate extinction coefficients for the water column and ice layer.

McMurdo Dry Valleys Underwater Photosynthetic Active Radiation (PAR) Vertical Profiles in McMurdo Dry Valleys Lakes, 1993-present

John Priscu
As part of the Long Term Ecological Research (LTER) project in the McMurdo Dry Valleys of Antarctica, lakes were monitored for photosynthetic active radiation (PAR) levels. This data set exemplifies the vertical profile of underwater PAR profiles in perennial ice covered lakes and ambient PAR measured at the air-ice interface. Profile data can be used to calculate extinction coefficients for the water column and ice layer.

McMurdo Dry Valleys Underwater Photosynthetically Active Radiation (PAR) from in-situ Primary Production Experiments in McMurdo Dry Valleys Lakes, 1995-present

John Priscu
As part of the Long Term Ecological Research (LTER) project in the McMurdo Dry Valleys of Antarctica, PAR is measured at one depth during primary production experiments in Dry Valley Lakes. This data set quantifies instantaneous underwater PAR at 10-meter depths in Lakes Bonney and Hoare, and at 7-meter depth in Lake Fryxell (depths vary after 2008, check data file for actual depth). Ambient PAR was also measured at the air-ice interface from each of...

Spatial surface water chemistry of Lake Mendota with FLAMe: 2014-2016

Luke Loken
We mapped surface water chemistry in Lake Mendota 39 times between 2014 and 2016. We used a sensor-based and boat-mounted sensing platform to continuously measure underway water chemistry. Measurements were linked with global positioning systems (GPS) to create maps of surface water chemistry. Data have been provided in three formats (raw, hydraulic-corrected, and tau-corrected).

Manual well measurements from 9 Hillslope Project sites located in Macon County, North Carolina, within the Upper Little Tennessee River Basin

Coweeta Long Term Ecological Research Program & Lawrence E. Band
The hillslope study was established to directly link land use impacts to streamwater quality in the southern Appalachian Mountains. Nine sites were selected in the Little Tennessee Riverwatershed in Macon County, NC, representing four land use types: forest, mountain development,traditional valley, and large river valley. At each of these sites, three subsurface flowpathswere identified, and four plots were established along the flowpath following the elevation gradient. At seven of the nine sites, the three lower...

Climate station measurements from 5 Hillslope Project sites located in Macon County, North Carolina, within the Upper Little Tennessee River Basin

Coweeta Long Term Ecological Research Program & Lawrence E. Band
The hillslope study was established to directly link land use impacts to streamwater quality in the southern Appalachian Mountains. Nine sites were selected in the Little Tennessee River watershed in Macon County, NC, representing four land use types: forest, mountain development, traditional valley, and large river valley. At five of the nine sites, a climate station was installed that measured air temperature, wind speed and direction, Relative Humidity, and Solar Radiation. Dew point, Wind Chill,...

Tree, shrub, and herb data from 10 Hillslope Project sites located in Macon County, North Carolina, within the Upper Little Tennessee River Basin

Coweeta Long Term Ecological Research Program & Katherine Elliott
Vegetation was surveyed on 10 sites in the upper Little Tennessee River watershed in Macon County, North Carolina during the summer of 2012. The sites represent a gradient of development, including forested sites, agricultural sites, and exurban sites. All woody vegetation >2.5 cm diameter at breast height (DBH) was measured and identified within twelve 10 x 10 m plots at each site. Woody shrubs >0.5 m in height and <2.5 cm DBH were counted and...

Precipitation disdrometer at C1 from October 2013 to May 2016

John Bryan Curtis
An OTT Parsivel Disdrometer is used to generate detailed precipitation information on the fall speeds and sizes of hydrometeors at the Niwot Ridge C1 site. This disdrometer data aids in the quantification of rain and snowfall microstructure allowing users of the data to investigate the influence that hydrometeor characteristics have on precipitation accumulation rates, streamflow/runoff, precipitation gauge errors, and radar reflectivity-rain/snow rate relationships (these are current uses of the data but there are many more...

Chlorophyll a and primary productivity data for various lakes near Toolik Research Station, Alaska, Arctic LTER. Summer 2010 to 2018

Anne Giblin & George Kling
Decadal file describing the chlorophyll a and primary production in various lakes near Toolik Research Station (68 38'N, 149 36'W) during summers from 2010 to 2014. Sample site descriptors include an assigned number (sortchem), site, date of analysis (incubation), time, depth and rates of primary production. The amount of chlorophyll a and pheophytin were also measured.

Soil cation exchange capacity (CEC) from 9 Hillslope Project sites in Macon County, North Carolina, within the Upper Little Tennessee River Basin

Coweeta Long Term Ecological Research Program & Jennifer D. Knoepp
Cation exchange capacity (CEC) of soil was analyzed as part of the hillslope plots in Macon County, North Carolina. There were 9 hillslope sites representing a gradient of development, including forested, valley agriculture, and mountain housing developments. There were 12 10 x 10-m plots at each site. A soil probe was used to collect soils from 3 depths at each plot: 0-10 cm, 10-30 cm, and 30 + cm. Soil was then dried, processed, and...

Presence or absence of marsh plant species along transects through a nutrient enriched marsh receiving wastewater effluent and a reference (unenriched) marsh, Plum Island Ecosystems LTER.

Robert Buchsbaum
Presence or absence of marsh plant species along transects through a nutrient enriched marsh receiving wastewater effluent and a reference (unenriched) marsh. Nutrient enrichment comes from the Ipswich Wastewater Treatment Facility on Greenwood Creek in Ipswich. The marsh around Clubhead Creek, Rowley, MA was used as a reference.

United States Pacific Northwest surveys of coastal foredune topography and vegetation abundance, 2012-2014

Reuben G Biel, Sally D Hacker, Peter Ruggiero & Lindsay Carroll
These datasets document our measurements of dune plant species abundance and topography from paired vegetation and topographic cross-shore foredune surveys in the United States Pacific Northwest (Oregon and southern Washington coastlines) in Summer 2012 and Summer 2014. In 2012, we conducted cross-shore paired topographic and vegetation surveys at 126 transect locations, and performed three replicate cross-shore transects per location (for a total of 378 transects). Of these surveys, 58 transect locations were positioned within Habitat...

Soil phosphorus measurements from 9 Hillslope Project sites in Macon County, North Carolina, within the upper Little Tennessee River Basin

Coweeta Long Term Ecological Research Program & Jennifer D. Knoepp
The percent of Phosphorus in soil was analyzed as part of the hillslope plots in Macon County, North Carolina. There were 9 hillslope sites representing a gradient of development, including forested, valley agriculture, and mountain housing developments. There were 12 10 x 10-m plots at each site. A soil probe was used to collect soils from 3 depths at each plot: 0-10 cm, 10-30 cm, and 30 + cm. Soil was then dried, processed, and...

Disturbance to permanent monitoring plots at GCE sites 1-10, from 2001 to 2018.

Georgia Coastal Ecosystems LTER Project & Steven C. Pennings
We established permanent vegetation monitoring plots in creekbank and midmarsh at GCE sites 1-10 in 2000. A dedicated Juncus zone was later added at sites 10 and 9. Starting in 2001, when we recorded plant sizes, we also noted any disturbance to the plots. Plots were scored as normal (no visible disturbance), disturbed by wrack (wrack present in plots and stems dead or broken), disturbed by snails (>100 Littoraria per square meter and plant biomass...

Soil phosphorus measurements from 9 Hillslope Project sites in Macon County, North Carolina, within the upper Little Tennessee River Basin

Coweeta Long Term Ecological Research Program & Jennifer D. Knoepp
The percent of Phosphorus in soil was analyzed as part of the hillslope plots in Macon County, North Carolina. There were 9 hillslope sites representing a gradient of development, including forested, valley agriculture, and mountain housing developments. There were 12 10 x 10-m plots at each site. A soil probe was used to collect soils from 3 depths at each plot: 0-10 cm, 10-30 cm, and 30 + cm. Soil was then dried, processed, and...

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