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168 results for “headwater stream”
PIE LTER, Year 2016, 15 minute measurements of stage in a small headwater stream draining a highly suburban catchment (72% residential), Saw Mill Brook, Burlington, MA.
Year 2016, continuous measurements, every 15 minutes, were made of depth and stream temperature in a small headwater stream, Saw Mill Brook, Burlington, MA, draining a highly suburban catchment (72% residential). Discharge is determined from stage using discharge vs stage regressions.
PIE LTER, year 2017, 15 minute measurements of stage in a small headwater stream draining a highly suburban catchment (72% residential), Saw Mill Brook, Burlington, MA.
Year 2017, continuous measurements, every 15 minutes, were made of depth and stream temperature in a small headwater stream, Saw Mill Brook, Burlington, MA, draining a highly suburban catchment (72% residential). Discharge is determined from stage using discharge vs stage regressions.
PIE LTER, year 2018, 15 minute measurements of stage in a small headwater stream draining a highly suburban catchment (72% residential), Saw Mill Brook, Burlington, MA.
Year 2018, continuous measurements, every 15 minutes, were made of depth and stream temperature in a small headwater stream, Saw Mill Brook, Burlington, MA, draining a highly suburban catchment (72% residential). Discharge is determined from stage using discharge vs stage regressions.
PIE LTER time series of methane, CO2 and N2O ebullition measurements at four headwater streams in Massachusetts and New Hampshire.
Methane ebullition was monitored at four headwater streams during 2018 and 2019. Stationary bubble traps were deployed from approximately May through October. CC and SB were monitored in 2018 and 2019, while DB and CB were only monitored in 2019. 12 traps were deployed at CC, SB, and DB, and 9 traps were deployed at CB. The concentration measured in the emitted gas was multiplied by the volume measured in a trap to calculated the total methane flux via ebullition. The traps were visited at least once weekly. The mean, median, minimum, and maximum rate of ebullition across all traps at a site over a two week period are listed here. Relevant publications: Robison, A.L. (2021) Carbon emissions from streams and river: Integrating methane emission pathways and storm carbon dioxide emissions into stream and river carbon balances. Doctoral Dissertation. University of New Hampshire. Robison, A.L., W.M. Wollheim, B. Turek, C. Bova, C Snay, & R.K. Varner (in review). Spatial and temporal heterogeneity of methane ebullition in lowland headwater streams. Limnology and Oceanography.
PIE LTER dissolved methane and water temperature from four headwater streams in Massachusetts and New Hampshire.
Dissolved methane was measured in the surface water of four headwater streams during 2019. Relevant publications: A.L. Robison (2021) Carbon emissions from streams and river: Integrating methane emission pathways and storm carbon dioxide emissions into stream and river carbon balances. Doctoral Dissertation. University of New Hampshire. A.L. Robison, W.M. Wollheim, C.R. Perryman, A. Cotter, J.E. Mackay, R.K. Varner, P. Clarizia, and J.G. Ernakovich (in review). Dominance of diffusive methane emissions from lowland headwater streams promotes oxidation and isotopic enrichment. Frontiers in Environmental Science.
PIE LTER Methane isotopes (13C and D) for methane in sediments and dissolved in surface water from four headwater streams in Massachusetts and New Hampshire.
Gas samples for methane isotopes were collected from four headwater streams. Benthic gas samples were collected by physcially distrubing the sediment and collecting ebullated gas. Dissolved gas samples were extracted from surface water. 13C and deuterium isotopes were analyzed. Relevant publications: A.L. Robison (2021) Carbon emissions from streams and river: Integrating methane emission pathways and storm carbon dioxide emissions into stream and river carbon balances. Doctoral Dissertation. University of New Hampshire. A.L. Robison, W.M. Wollheim, C.R. Perryman, A. Cotter, J.E. Mackay, R.K. Varner, P. Clarizia, and J.G. Ernakovich (in review). Dominance of diffusive methane emissions from lowland headwater streams promotes oxidation and isotopic enrichment. Frontiers in Environmental Science.
Years 2019-2021, 15 minute measurements of stage in a small headwater stream draining a highly suburban catchment (72% residential), Saw Mill Brook, Burlington, MA.
Year 2019, 2020, and 2021 continuous measurements, every 15 minutes, were made of depth and stream temperature in a small headwater stream, Saw Mill Brook, Burlington, MA, draining a highly suburban catchment (72% residential) in the Ipswich River watershed. Discharge is determined from stage using discharge vs stage regressions.
Year 2019-2021, 15 minute measurements of stage, water temperature in a small headwater stream draining a mainly wetland catchment (49% wetlands/swamp + 36% forest), Bear Meadow Brook, draining Cedar Swamp, Reading, MA.
Year 2019, 2020 and 2021 continuous measurements, every 15 minutes, were made of depth and stream temperature in a small headwater stream, Saw Mill Brook, Burlington, MA, draining a highly suburban catchment (72% residential) in the Ipswich River watershed. Discharge is determined from stage using discharge vs stage regressions.
Figure 3 in Intense inhabitation and relaxed host-leaf preference of aquatic chironomid leaf-miners in headwater streams in Asian lucidophyllous forests
Figure 3. Frequency distributions of unmined (open) and mined (solid) leaves among representative plant species. (Cs, Castanopsis sieboldii; Qg, Quercus glauca; Qm, Quercus miyagii; Mj, Machilus japonica; Mt, Machilus thunbergii; Mr, Myrica rubra; Ot, others.)
Figure 2 in Intense inhabitation and relaxed host-leaf preference of aquatic chironomid leaf-miners in headwater streams in Asian lucidophyllous forests
Figure 2. Habitats and leaf-mining habits of Stenochironomus okialbus. (A–B) headwater streams at S4 and S9; (C) submerged litter at S9; (D–F) leaf-mines; (G) a larva undulating in a mine; (H) a pupa; (I) head of a mining larva; (J–K) a female and a male adult midge. Plant species of the leaves: C, D, G, I: Castanopsis sieboldii; E, H: Dendropanax trifidus; E: Myrica rubra.
Fig. 2 in Trophic organization and fish assemblage structure as disturbance indicators in headwater streams of lower Sorocaba River basin, São Paulo, Brazil
Fig. 2. Average values and confidence interval (IC95%) of individuals' density, Shannon and Margalef Indices for each treatment, structurally complex streams (TT) and simplified stream (TC).
Fig. 1 in Trophic organization and fish assemblage structure as disturbance indicators in headwater streams of lower Sorocaba River basin, São Paulo, Brazil
Fig. 1. Map of the study area showing São Paulo State within Brazil (top left panel); Sorocaba River basin (shaded) and sample region (square) within São Paulo State (bottom left panel); and elevation profile and hydrography with position of the sampled sites (circles) in the sample region (right panel).
Fig. 3 in Trophic organization and fish assemblage structure as disturbance indicators in headwater streams of lower Sorocaba River basin, São Paulo, Brazil
Fig. 3. Projections of the Non-Metric Multidimensional Scaling (NMDS) and the smallest convex hulls that contain all data of the structurally complex streams (TT1, TT2 and TT3) and simplified stream (TC) according to a) taxonomic structure and b) trophic groups.
Figure 6 in Far from urban areas: plastic uptake in fish populations of subtropical headwater streams
Figure 6. Median plastic particle distribution in fishes per sample site (whiskers = min - max values, dots = outliers, stars = extreme outliers, horizontal line = median, box = 50% tile).
Figure 3 in Far from urban areas: plastic uptake in fish populations of subtropical headwater streams
Figure 3. Plastic particles abundances in benthic and water column feeders (whiskers = min - max values, dots outliers, stars extreme outliers, horizontal line median, box 50% tile).
Figure 1. Study area. A. South America and Brazil. B in Far from urban areas: plastic uptake in fish populations of subtropical headwater streams
Figure 1. Study area. A. South America and Brazil. B. Brazil and the state of Rio Grande do Sul. C. Rio Grande do Sul and the Sinos River Basin. D. The numbers from 1 to 7 in the white dots show the sampling sites in the upper section of the Sinos River basin. The colour gradient represents the terrain elevation (light green elevations of 30m altitude and dark brown elevations of 980m). The red polygons are the urban areas.
Figure 5 in Far from urban areas: plastic uptake in fish populations of subtropical headwater streams
Figure 5. Total abundances of food items per category in comparison with ingested plastic particles abundances. (Pla=Pastics, Dip=Diptera, Hem=Hemiptera, Tri=Tricoptera, Lep=Lepidoptera, Eph=Ephemeroptera, Ple=Plecoptera, Col=Coleoptera, Gas=Gastropoda, Odo=Odonata, Veg= Plant).
Data for "Temporally Variable Stream Width and Surface Area Distributions in a Headwater Catchment" by Barefoot et al.
<p>This repository holds data necessary for reproducing results from Barefoot et al. (in prep). The data is a record of high-resolution stream width measurements in Stony Creek, a headwater stream in North Carolina, USA. Included are:</p> <ul> <li>Width measurements for 13 surveys collected from 2015 to 2016. </li> <li>High-resolution discharge measurements of discharge collected over the same period.</li> <li>Data summarizing the topology of the drainage network during each survey.</li> <li>A 5-year record of discharge from the closest USGS gauge for historical flow characterization. </li> <li>Data for estimating measurement error. </li> <li>A summary table for drainage density during each survey as well as other summary statistics. </li> <li>Geographic data detailing the mapped stream locations. </li> </ul> <p>The records span a range of discharge conditions measured from summer 2015 to spring 2016. Other hydrological data for this catchment for a longer range of time is available by request from Dr. Margaret Zimmer and Dr. Brian McGlynn. </p> <p>Code for analyzing and reproducing these results can be found on Github at [insert link to repo here.]</p>
FIGURE 3 in Taxonomic and phylogenetic beta diversity in headwater stream fish communities of the Paraná and Paraguai River basins
FIGURE 3 | Turnover and nestedness components of taxonomic and phylogenetic beta diversity in streams of the Paraná and Paraguai River basins. Clockwise from top left: total, turnover and nestedness components of taxonomic beta diversity; at the bottom, total, turnover and nestedness components of phylogenetic beta diversity. Filled circles correspond to Paraná streams and triangles to Paraguai streams.
FIGURE 2 in Taxonomic and phylogenetic beta diversity in headwater stream fish communities of the Paraná and Paraguai River basins
FIGURE 2 | Phylogenetic hypothesis for fish collected in headwater streams of the Paraná and Paraguai River basins.
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.