2,667 Works

Summer high frequency measurements of dissolved O2 and CO2 concentrations and water temperature at the surface of 11 northern lakes

Dominic Vachon, Paul A Del Giorgio, Steve Sadro, Matthew Bogard, Jean-Francois Lapierre, Helen M Baulch, James A Rusak, Blaize A Denfeld, Alo Laas, Gesa A Weyhenmeyer, Marcus Klaus & Jan Karlsson
This dataset includes high frequency paired measurements of dissolved O2 and CO2 concentrations at the surface (0.5 to 2 m depth) of 11 lakes in the Northern Hemisphere. Measurements were taken every 2 hours in summer (July and August) of various years depending on lakes (between 2011 and 2014). The dataset is used to test a conceptual framework on the controls of coupling and decoupling of these two gases. In all lakes dissolved CO2 was...

Production, biomass, and yield estimates for walleye populations in the Ceded Territory of Wisconsin from 1990-2017

Holly Embke, Andrew Rypel, Stephen Carpenter, Greg Sass, Thomas Cichosz, Joseph Hennessy & Jake Vander Zanden
Recreational fisheries are valued at $190B globally and constitute the predominant use of wild fish stocks in developed countries, with inland systems contributing the dominant fraction of recreational fisheries. Although inland recreational fisheries are thought to be highly resilient and self-regulating, the rapid pace of environmental change is increasing the vulnerability of these fisheries to overharvest and collapse. We evaluate an approach for detecting hidden overharvest of inland recreational fisheries based on empirical comparisons of...

Ecohydrological monitoring of urban ecological infrastructure at the Arizona State University Tempe Campus (Tempe, Arizona)

Christopher Sanchez
Urban Ecological Infrastructure (UEI) are urban ecological structures whose ecological functions are increasingly being used to deliver key urban services and address urban sustainability challenges. The growing use of UEI to address urban sustainability challenges can bring together teams of urban researchers and practitioners to co-produce UEI design, monitoring and maintenance. However, this co-production process received little attention in the literature, and has not been studied in the Phoenix Metro Area. This study examined several...

Mohonk Preserve Amphibian and Water Quality Monitoring Dataset at 11 Vernal Pools from 1931-Present

Mohonk Preserve, Natalie Feldsine, Anna Forester, Alexis Garretson, Paul Huth, Elizabeth Long, Megan Napoli, Ethan Pierce, Daniel Smiley, Shanan Smiley & John Thompson
"The Mohonk Preserve's Daniel Smiley Research Center has been monitoring species occupancy, reproductive success, and water quality of 11 vernal pools (Ski Loop, Bonticou, Terrace, Long Woodland Pool, Long Woodland Swamp, Oakwood, Sleepy Hollow, Hermits, North Mud Pond, Canaan, and Talus) on the Preserve each spring from April 1931 to May 2019 (present). This project aims to document changes in the reproductive behavior and phenology of amphibians and allow research access to historical, longitudinal records....

Stream water chemistry data for Green Lake 5 outlet, 1984 - ongoing.

Caine, T. Nelson (Nel)
This is a summary of major ion concentrations for stream water samples collected from the outlet stream at Green Lake 5.

Biogeochemical and physical controls on methane fluxes from two ferruginous meromictic lakes

Nicholas Lambrecht, Sergei Katsev, Chad Wittkop, Steven J. Hall, Cody S. Sheik, Aude Picard, Mojtaba Fakhraee & Elizabeth D. Swanner
Data was collected at Brownie Lake in Minneapolis, MN, USA and at Canyon Lake in the Upper Peninsula of MI, USA. The methane flux, or the amount of methane entering the atmosphere over a given area per time, was assessed at Brownie Lake and Canyon Lake. Sampling of Brownie Lake during geochemical characterization revealed that the methane flux out of the lake was much higher than Canyon Lake, as well as other ferruginous meromictic lakes...

Western columbine genetics across HJ Andrews Experimental Forest meadow communities

Andy Jones & Dustin Gannon
Woody plant encroachment is diminishing meadow and grassland habitat on a global scale. Increased woody cover influences local conditions such as light/shade environments, local soil characteristics, understory plant community structure, and disturbance regimes. Woody encroachment may also affect landscape-scale biological processes, such as herbaceous plant population structure, through reducing the total cover and continuity of open habitat and eroding mutualistic interactions, such as plant-pollinator interaction networks. A major concern is that habitat fragmentation will have...

Forest-wide bird survey at 183 sample sites the Andrews Experimental Forest from 2009-2019

Sarah J. K. Frey, Hankyu Kim & Matthew G Betts
Bird occurrence data collected at 183 sample locations within the H. J. Andrews Experimental Forest (HJA) from 2009-present. We used a stratified, systematic, random design to select sample locations. We stratified across elevation, distance to road, and habitat type (plantation or mature/old-growth forest). We conduct point counts on six separate occasions from May – July, which corresponded to spring arrival and subsequent breeding period for the majority of bird species at HJA. Surveys occur between...

Stream specific conductance and temperature from small watersheds in the Andrews Forest

Sherri L. Johnson
Stream specific conductance and water temperature are measured instantaneously every 5 minutes at most of the gauged watersheds within the H.J. Andrews Experimental Forest (Watersheds 1, 2, 3, 6, 7, 8, 10 and Mack Creek). Data is complementary to stream chemistry measurements from a proportional sampler (CF002) and long-term streamflow measurements (HF004) made at each of these watersheds.

Streamflow for Martinelli basin, 1982 - ongoing.

Caine, T. Nelson (Nel), Jennifer F. Morse & Niwot Ridge LTER
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...

Streamflow for Green Lake 4, 1981 - ongoing.

Nel Caine, Jennifer F. Morse & Niwot Ridge LTER
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...

Oral history transcripts from the H.J. Andrews Experimental Forest Program, 1996 to 2018

Frederick J. Swanson & Samuel Schmieding
Oral history interviews have been conducted over the last two decades with members of the Andrews Forest community who provided valuable historical information about the program and related issues. On the occasion of the 50th anniversary of the experimental forest (1998), history professor Max Geier (Western Oregon University) conducted 33 interviews with individuals (or pairs of people) and five research groups from 1996-1998. About 20 years later (2013-2018) historian Sam Schmieding (Oregon State University) conducted...

N and P fertilization experiment plant species composition and diversity data for South of saddle, 1990 - 2000.

Terry Theodose & William F Bowman
The effects of nitrogen, phosphorus, and nitrogen+phosphorus fertilization on alpine plant species composition and diversity in a dry and a wet meadow community were examined. A point-quadrat system was used to estimate the cover frequencies for each species in plots in the 2 communities on the south slope of Niwot Ridge. Treatments were N, P, N+P, and control. Observations were made once per year per plot over a period of several years. Diversity (Shannon-Weaver) indices...

North Temperate Lakes LTER: Chlorophyll - Madison Lakes Area 1995 - current

NTL Lead PI, John Magnuson, Stephen Carpenter & Emily Stanley
Chlorophyll is measured at our permanent sampling station in the deepest part of the lake. Chlorophyll samples are collected from the four primary study lakes in the Madison area (Lakes Mendota, Monona, and Wingra and Fish Lake) at integrated depths and discrete depths for spectrophotometric analysis and fluorometric analysis. Due to a change in instruments starting in 2002 and lasting through 2007, chlorophyll analyses for the southern lakes had an uncorrectable bias, and are not...

North Temperate Lakes LTER: Secchi Disk Depth; Other Auxiliary Base Crew Sample Data 1981 - current

NTL Lead PI, John Magnuson, Stephen Carpenter & Emily Stanley
Secchi disk depth is measured in the deepest part of each lake for the eleven primary lakes (Allequash, Big Muskellunge, Crystal, Sparkling, Trout lakes, unnamed lakes 27-02 [Crystal Bog] and 12-15 [Trout Bog], Fish, Mendota, Monona and Wingra). The disk is circular, 20 cm in diameter, and has alternating black and white quadrants. It is lowered using a calibrated Kevlar rope to minimize stretching. Readings are made on the shaded side of the boat both...

North Temperate Lakes LTER: Physical Limnology of Lake Kegonsa and Lake Waubesa 1995 - current

Richard Lathrop & NTL Lead PI
Parameters characterizing the physical limnology of Lakes Waubesa and Kegonsa are measured at one station in the deepest part of each lake at 0.5-m to 1-m depth intervals. Measured parameters in the data set include water temperature and dissolved oxygen, as well as the derived parameter percent oxygen saturation. Number of sites: 2 Sampling Frequency: bi-weekly during ice-free season from late March or early April through early September, then every 4 weeks through late November;...

North Temperate Lakes LTER: Physical Limnology of Primary Study Lakes 1981 - current

NTL Lead PI, John Magnuson, Stephen Carpenter & Emily Stanley
Parameters characterizing the physical limnology of the eleven primary lakes (Allequash, Big Muskellunge, Crystal, Sparkling, Trout, bog lakes 27-02 [Crystal Bog] and 12-15 [Trout Bog], Mendota, Monona, Wingra and Fish) are measured at one station in the deepest part of each lake at 0.25-m to 1-m depth intervals depending on the lake. Measured parameters in the data set include water temperature, vertical penetration of photosynthetically active radiation (PAR; not measured on lakes Mendota, Monona, Wingra,...

North Temperate Lakes LTER: Light Extinction - Trout Lake Area 1981 - current

NTL Lead PI, John Magnuson, Stephen Carpenter & Emily Stanley
A light (PAR) extinction coefficient is calculated for the water column for the seven northern study lakes (Allequash, Big Muskellunge, Crystal, Sparkling, and Trout lakes, unnamed lakes 27-02 [Crystal Bog] and 12-15 [Trout Bog]). The fraction of surface light is computed at 0.25-m to 1-m depth intervals depending on the lake. The light (PAR) extinction coefficient is calculated by regressing ln(fraction of light(z)) on depth z. Sampling Frequency: fortnightly during ice-free season - every 6...

North Temperate Lakes LTER: Chlorophyll - Trout Lake Area 1981 - current

NTL Lead PI, John Magnuson, Stephen Carpenter & Emily Stanley
Chlorophyll and phaeopigments are measured at our permanent sampling station in the deepest part of each lake. Chlorophyll samples are collected from the seven primary study lakes (Allequash, Big Muskellunge, Crystal, Sparkling, and Trout lakes and bog lakes 27-02 [Crystal Bog], and 12-15 [Trout Bog]) in the Trout Lake area at two to 10 depths depending on the lake and analyzed spectrophotometrically. Sampling Frequency: fortnightly during ice-free season - every 6 weeks during ice-covered season...

Aboveground net primary productivity data for Saddle grid, 1992 - ongoing.

Marilyn Walker, Jane G. Smith, Hope Humphries & Niwot Ridge LTER
Total aboveground live vascular biomass was clipped from 50x20 cm plots in areas near the saddle grid permanent plots on Niwot Ridge to measure net primary productivity.

Plant species composition data for Saddle grid, 1989 - ongoing.

Marilyn Walker, Hope Humphries & Niwot Ridge LTER
Permanent 1-m^2 plots were established beside each of the 88 Saddle grid stakes in 1989 by Marilyn Walker, who led the sampling effort until 1997. Each plot was located within 2 m of the stake, but always in the same vegetation type as that associated with the stake. The distance and direction from the grid stake were randomly selected, and thus varied from plot to plot. Point quadrat measurements have been made at irregular intervals...

North Temperate Lakes LTER: Color - Trout Lake Area 1989 - current

NTL Lead PI, John Magnuson, Stephen Carpenter & Emily Stanley
Color is measured four times a year in the seven northern study lakes (Allequash, Big Muskellunge, Crystal, Sparkling, and Trout lakes, unnamed lakes 27-02 [Crystal Bog] and 12-15 [Trout Bog]) in water samples that are filtered in the field through 0.45 um nucleopore membrane filters. A spectrophotometer is used to quantify color in the lab as absorbance (unitless) at 1 nm intervals between the wavelengths of 200 and 800 nm (Note: Prior to August 2008,...

Stream and air temperature data from stream gages and stream confluences in the Andrews Experimental Forest, 1950 to present

Stanley V. Gregory & Sherri L. Johnson
Stream and air temperature are measured in tandem at stream gauging stations and other selected locations and stream confluences within the Andrews Forest. Air temperature is generally measured over the stream or alongside. Currently, mean, max and min water and air temperature data are collected every 5 minutes at the gauging stations and instantaneous temperatures every 15 minutes at all other sites. Most measurements were collected hourly commencing in the later 1990s, but a few...

Geomorphic characteristics and algal cover for 36 tidal mudflats on the Virginia Coast

Alice Besterman
Data on sediment particle sizes, mudflat topography, and hydrologic flow-related characteristics collected for 36 mudflats. Some data were field collected while others were extracted from modeled or remotely sensed data sets. Details are included with each variable.

Benthic Chlorophyll and Macroalgae on an Experimentally-manipulated Tidal Flat on the Virginia Coast, 2016-2017

Alice Besterman
In 2016 a Before-After-Control-Impact experimental design was used to test if the removal of macroalgae from a heavily vegetated mudflat would result in an increase in MPB biomass (Smith 2002). Data Table 1 (BCL_BACIexpa.csv):Benthic chlorophyll samples collected from mudflat where experimental macroalgal removal was conducted. Samples collected haphazardly from 3500 m^2 plots. Sediment cores were 1 cm inner diameter and 2 cm deep. Data Table 2 (BCL_MAMPBa.csv):Survey data where macroalgal mats were sampled and sediment...

Registration Year

  • 2019
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  • Dataset
    2,667