3,143 Works

Terrestrial gastropods abundance data along an elevational gradient within the Sonadora River watershed

Michael R. Willig
The data set includes 3 files that contain abundance data for terrestrial gastropods along an elevational gradient within the Sonadora River watershed. Two files (1 and 2) contain data from the same transect but differ in the year during which they were collected (2007 and 2008). The third file (3) contains data from a separate elevational transect (sites were located at the same elevation as in files 1 and 2) in palm dominated forest within...

Corridors promote fire via connectivity and edge effects

Lars Brudvig, Stephanie Wagner & Ellen Damschen
Landscape corridors, strips of habitat that connect otherwise isolated habitat patches, are commonly employed during management of fragmented landscapes. To date, most reported effects of corridors have been positive; however, there are long-standing concerns that corridors may have unintended consequences. Here, we address concerns over whether corridors promote propagation of disturbances such as fire. We collected data during prescribed fires in the world's largest and best replicated corridor experiment (Savannah River Site, South Carolina, USA),...

Water Levels from the Shark River Slough, Everglades National Park (FCE), South Florida from October 2000 to Present

Daniel Childers & Rene Price
Water level is recorded at least hourly at SRS2, SRS3, SRS4, SRS5, and SRS6, SRS1c, and SRS1d. Water level is measured with pressure water level gauges that digitally record water height relative to the local soil surface.

Demographic measures of Liatris ohlingerae (Asteraceae) in 20 populations across multiple habitats and time-since-fire intervals in south central Florida from 1997-2017

Eric S Menges & Carl W Weekley
Demographic data were collected on 2,858 tagged individually marked plants annually from 1997 to 2017 in 20 populations across three sites on the southern end of the Lake Wales Ridge in south central Florida, USA. Our goal was to understand demographic responses including recruitment, survival, reproduction and mortality of individuals across populations, habitat types and fire-return-intervals. Habitats include rosemary scrub, scrubby flatwoods and human created sandy roadsides. Populations spanned three sites including Archbold Biological Station...

ASD04 Stream discharge measured at the flumes on watershed N20B at Konza Prairie

Walter Dodds
Stream discharge is measured on a catchment (N20B), with 20-year fire return interval and grazed by bison since 1992. Measurements are taken at 5 minute intervals at a triangular throated flume. The prairie streams are 3rd-order and are intermittent. Daily and stormflow discharge records are available.

BMS01 Mycorrhizae spore density and composition in the Belowground Plot Experiment at Konza Prairie

David Hartnett
Spore densities of 14 groups (13 species + unknown) were measured the 64 belowground plots (record type 1). Effects of burning, mowing, and N + P additions on spore densities (an index of AM fungi infection rates). Community indices and percent root colonization (record type 2). Effects of burning, mowing, and N + P additions on mycorrhizal community composition and root colonization.

BNS01 Nematodes density and composition in the Belowground Plot Experiment at Konza Prairie

Timothy Todd
The effects of burning, mowing, and nitrogen (N) and phosphorus (P) fertilization on the trophic structure of a tallgrass prairie nematode community were examined in a long-term field experiment established in 1986. Nematode densities and trophic composition were determined in October of 1987, 1989, and 1994 following 2, 4, and 9 years of treatment, respectively.

KFH01 Konza Prairie Fire History

John Briggs
The Konza burn history data is downloadable by year. Watershed names and codes listed are the current watershed designations (2010). Please note that several watershed designations have changed over the history of Konza. This is inevitable due to changes in research objectives but is problematic for those wanting to discover the full burn history of a given area. In some cases watersheds have simply been renamed to reflect changes in experimental burn treatments (e.g. R20A...

Effects of Corridors on Genetics of a Butterfly in a Landscape Experiment

Carrie Wells, Ray Williams, Gary Walker & Nick Haddad
To investigate the possible role of landscape connectivity on the genetic structure of isolated populations, we examined the effects of habitat corridors on the population genetics of a vagile butterfly species, Junonia coenia, within a largescale, experimental system. Using allozyme electrophoresis, a total of nine loci were identified and scored, six of which exhibited polymorphism. Our data demonstrated consistently higher levels of expected (He) and observed (Ho) heterozygosity in butterflies sampled from patches connected by...

Testing the relative importance of local resources and landscape connectivity on Bombus impatiens (Hymenoptera, Apidae) colonies

John Herrmann, Nick Haddad & Douglas Levey
Bee populations are decreasing worldwide. The underlying causes are likely determined by factors at different scales. We tested the relative importance of local resources and landscape connectivity on 64 bumblebee (Bombus impatiens) colonies in experimentally isolated and connected habitat fragments. We used colony mass, no. of workers, and no. of gynes to estimate colony performance. Landscape connectivity did not significantly affect colony performance, but local floral resources had a significantly positive effect, especially in isolated...

Habitat corridors alter relative trophic position of fire ants

Julian Resasco, Doug Levey & Ellen Damschen
Habitat fragmentation disrupts species movement, leading to local extinctions and altered community structure. Habitat corridors, which connect isolated patches of habitat and facilitate movement between patches, provide a potential solution to these negative impacts. However, most studies to date have examined the movement of species alone without considering emergent effects on the community (e.g., altered trophic structure). We use large-scale, experimental landscapes and nitrogen stable isotopes ratios (delta-N-15) of a common generalist consumer (the fire...

Survival and growth of south Florida slash pines in four seasonal ponds at Archbold Biological Station, 1992-2001

Eric S Menges & Peter L Marks
These data summarize survival and plant size (height, basal diameter) for south Florida slash pine (Pinus elliottii var. densa) in four seasonal ponds at Archbold Biological Station from 1992-2001. Plants were seedlings, saplings, or small trees. The seasonal ponds were favorable for growth (0.1-0.6 m in height per year) and annual survival (usually over 80%) in the absence of fire or major flooding events. Flooding episodes during most of the study ranged from 3-11 months...

Radiocarbon content of soil carbon and respired CO2 near T-Van from 2012 to 2015, Seasonal

John F Knowles
To test the hypothesis that old carbon may be contributing to the carbon source strength of alpine tundra near T-Van, a chamber (growing season) and two types of subsurface gas wells (remainder of the year) were used to collect respired carbon dioxide samples for radiocarbon analysis from four locations across a soil moisture gradient near T-Van between 2012 and 2015. Near surface soil samples (~10 cm depth) from each site were additionally collected and density...

PIE LTER year 2015, 15 minute measurements of conductivity, water temperature in a small headwater stream draining a mainly wetland catchment (49% wetlands/swamp + 36% forest), Bear Br., draining Cedar Swamp, Reading, MA.

Wilfred Wollheim & Mark Green
Year 2015, continuous measurements, every 15 minutes were made of conductivity, water temperature in Bear Brook in Reading, MA, a small headwater stream draining Cedar Swamp, a mainly wetland catchment (49% wetlands and swamp + 36% forest) in the Ipswich River watershed.

Experimentally evaluating effects of postfire drought on establishment, growth and survival of two widespread western conifer species; lodgepole pine and Douglas-fir

Winslow Deming Hansen & Monica G. Turner
This research seeks to understand how drought following wildfires affects the establishment of two widespread Rocky Mountain tree species, lodgepole pine and Douglas-fir. In Yellowstone National Park, warming, drying conditions are leading to increased frequency of severe wildfires that kill existing trees and trigger regeneration of the forest. These trends are expected to continue. Many tree species in Yellowstone are well adapted to fire. Yet, early and abundant seedling establishment after fire is critical for...

CBN01 Records of breeding activities for birds on Konza

Brett Sandercock
Dates by species of documented records of breeding - either nests or dependent, fledged young - with contents of nest, nest placement information and location on Konza Prairie recorded by grid square.

It takes a few to tango: Changing climate and fire regimes can cause regeneration failure of two subalpine conifers

Winslow D Hansen, Monica G Turner, Kristin Braziunas, Werner Rammer & Rupert Seidl
Environmental change is accelerating in the 21st century, but how multiple drivers may interact to alter forest resilience remains uncertain. In forests affected by large high-severity disturbances, tree regeneration is a resilience linchpin that shapes successional trajectories for decades. We modeled stands of two widespread western U.S. conifers, Douglas-fir (Pseudotsuga menziesii var. glauca), and lodgepole pine (Pinus contorta var. latifolia), in Yellowstone National Park (Wyoming, USA) to ask (1) What combinations of distance to seed...

SBC LTER: OCEAN: Sediment porewater ammonium and urea concentrations

Santa Barbara Coastal LTER, Daniel C Reed, John M Melack & Jason M. Smith
This data set present the results of efforts to characterize the concentrations of ammonium and (selectively) urea in pore waters of permeable, sandy sediments on the inner continental shelf of the Santa Barbara Channel, including those adjacent to major kelp beds. Samples sites included Arroyo Burro, Mission Creek, Refugio and Mohawk. A second data file include depth profiles of ammonium and urea concentrations in the water column above each sediment sampling site, which were used...

MCR LTER: Coral Reef: Ocean Currents and Biogeochemistry: salinity, temperature and current at CTD and ADCP mooring FOR05 from 2005 ongoing

& Libe Washburn
Moored and bottom mounted instrumentation (ADCP, CTD, thermistors, wave-tide meters) sampled year-round on the reef of Moorea Island, French Polynesia at site FOR05. Sampling began in 2005. All data have been interpolated onto a 20 min grid. ADCP data are orgainized into 1-meter bins, measured as height from the bottom, to a maximum of 20 bins. All bins may not be filled, and although post processing attempted to exclude data from bins 'above the surface',...

Soil moisture in long-term study plots

Cary Institute Of Ecosystem Studies & Peter Groffman
Baltimore Ecosystem Study Long-Term Study Plot Soil Metadata Participants Peter Groffman, Cary Institute of Ecosystem Studies Richard V. Pouyat, U.S. Forest Service Introduction The Baltimore Ecosystem Study (BES) has established a network of long-term permanent biogeochemical study plots. These plots will provide long-term data on vegetation, soil and hydrologic processes in the key ecosystem types within the urban ecosystem. The current network of study plots includes eight forest plots, chosen to represent the range of...

Stream chemistry for core sites in Gwynns Falls: concentration of Cl, NO3, PO4, total N and P, SO4, dissolved oxygen, E. coli, plus temperature, pH, clarity, turbidity, isotopes, and pharmaceuticals

Cary Institute Of Ecosystem Studies, Peter Groffman, Emma Rosi, Lisa Martel & Sujay Kaushal
Stream chemistry for core sites in Gwynns Falls: concentration of Cl, NO3, PO4, total N and P, SO4, dissolved oxygen, E. coli, plus temperature, pH, clarity, turbidity, isotopes, and pharmaceuticals doi:10.6073/pasta/89eb8f9c94842c3ec0b1e8f80c300e95 In the Baltimore urban long-term ecological research (LTER) project, (Baltimore Ecosystem Study, BES) we use the watershed approach to evaluate integrated ecosystem function. The LTER research is centered on the Gwynns Falls watershed, a 17,150 ha catchment that traverses a gradient from the urban...

Ecotone Study: Plant Above Ground Net Primary Productivity by Site

Brandon Bestelmeyer
Dataset consists of the annual aboveground net primary production (ANPP) across 3 habitats grouped by plant form and total ANPP. The habitats are grassland, mesquite shrubland, and the ecotone between the 2. The plant forms are winter annual forb, annual forb, bi-annual forb, perennial forb, annual grass, perennial grass, shrub, and sub-shrub. OBJECTIVE: The purpose of the study is to investigate how pulses of precipitation translate into pulses of plant aboveground net primary productivity (NPP)...

Eight Mile Lake Research Watershed, Carbon in Permafrost Experimental Heating Research (CiPEHR): Dissolved Organic Carbon 2007-2017

Emily Leslie Romano, Edward A.G. Schuur, James O Sickman &
The Carbon in Permafrost Experimental Heating Research (CiPEHR) project addresses the following questions: 1) Does ecosystem warming cause a net release of C from the ecosystem to the atmosphere?, 2) Does the decomposition of old C, that comprises the bulk of the soil C pool, influence ecosystem C loss?, and 3) How do winter and summer warming alone, and in combination, affect ecosystem C exchange? We are answering these questions using a combination of field...

Tree Rings, Howland

Alex Dye
These tree ring data are from Howland, Maine as part of Alex Dye's West Virginia University PhD dissertation. His dissertation abstract is as follows: This dissertation is organized into three individual standalone manuscripts supporting the overarching theme of reconstructing annual aboveground biomass growth in temperate forests of eastern North America using dendrochronological applications. Each manuscript is organized with the intent of submission to a peer-reviewed journal. The first manuscript validated the technique I use throughout...

Dipstick rain gauge data - LTER Weather Station

John Anderson
This primary purpose of this data set is to validate the LTER Weather Station tipping bucket rain gauge data. The dipstick rain gauge (DSRG) data is measured at least weekly during scheduled maintenance trips to the LTER Weather Station to maintain the evaporation pan water levels. During the summer months this may be twice a week. Additionally, DSRG data is collected after any rain event that requires the collection of the Wetfall/Dryfall precipitation buckets which...

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  • 2018
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