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40 results for “hyporheic zone”
Solute dynamics in the hyporheic zone of a headwater stream in Watershed 1 at the Andrews Experimental Forest, 2016-2018
This project examined the interactions between stream water and subsurface sediment to quantify how these interactions influenced organic C respiration and dissolved inorganic C (DIC) production in the hyporheic zone of a high-gradient headwater mountain stream draining a forested catchment at the H. J. Andrews Experimental Forest, Oregon, USA. The study used six 2-m long hyporheic mesocosms which were packed with streambed sediment in the spring of 2016. The mesocosms are located at the Watershed 1 (WS1) stream gage and stream water from WS1 has been pumped through the mesocosms continuously since they were first packed through the end of (and beyond) this study in autumn of 2018. The mesocosms were designed around 1-m long 20-cm diameter aluminum pipe segments with sample ports located each meter along the flowpath through each mesocosm – thus sampling at the inlet, at 1 m, and at the outlet which represents the full 2-m long flow path. Sampling was conducted on seven dates between Oct 23 2016 and Aug 27 2018. On two of these dates, only background samples were collected. On the remaining 5 dates, sampling was designed around continuous-injection tracer experiments using both a conservative tracer (salt) and a reactive tracer (various dissolved organic substrates). For background sampling events, samples were generally only collected once. The tracer experiments involved 4 discreet sampling times: 1. pre-injection (under background conditions); 2. early plateau; 3. late plateau, and 4. post-injection (and in one injection experiment, a 5th sample at late-post-injection time). For each round of samples, the mesocosm water temperature, pH, EC, and DO were measured with sensors in a small flow-through cell. Then water samples were collected for laboratory analysis for both DOC and DIC. The median travel time of water through each pipe segment of the 2-m mesocosms was also calculated from the conservative tracer break-through curves.
Carbon Dynamics in the Hyporheic Zone of a Headwater Mountain Stream in the Cascade Mountains, Oregon – Watershed 1 at HJA – June 2013 to March 2014
This study investigated carbon dynamics in the hyporheic zone of a steep, forested catchment in the Cascade Mountains of western Oregon, USA. Water samples were collected monthly from a headwater stream and well network during baseflow conditions from July to December 2013 and again in March 2014. We also sampled during one fall storm event, collecting pre-storm, rising leg, and extended high flow samples. The well network is located at the base of Watershed 1 (WS1) of the H.J. Andrews Experimental Forest and spans the full width of the floodplain (~14 m) along a 29 m reach of stream. We measured pH, temperature, water level, major anions, major cations, DOC, DIC, and total alkalinity. Flow paths, travel time to wells and hydraulic conductivity were available from previous studies.
Fig. 3 in Distribution of Meiobenthic Arthropod Communities in the Hyporheic Zone of Nakdonggang
Fig. 3. Composition rate of meiobenthic faunal groups found at the 38 sites in the hyporheic zone of Nakdonggang.
Fig. 7 in Distribution of Meiobenthic Arthropod Communities in the Hyporheic Zone of Nakdonggang
Fig. 7. Composition of meiobenthic faunal groups in the 3 levees. (Par = Parabathynellidae, Bat = Bathynellidae, Cyc = Cyclopidae, Har = Harpacticoida, Pss = Parastenocaris, Am = Amphipoda, Iso = Isopoda, Ac = Acari, Ost = Ostracoda.)
Fig. 5 in Distribution of Meiobenthic Arthropod Communities in the Hyporheic Zone of Nakdonggang
Fig. 5. The relative importance of the 4 regions for the occurrence of the major meiobenthic organisms in Nakdonggang. (Par = Parabathynellidae, Bat = Bathynellidae, Cyc = Cyclopidae, Har = Harpacticoida, Pss = Parastenocaris, Am = Amphipoda, Iso = Isopoda, Ac = Acari, Ost = Ostracoda.)
Modeled microbial respiration in the hyporheic zones within the Columbia River Basin
<p><strong>This data includes inputs and outputs of a coupled carbon-nitrogen river corridor model (RCM) for the Columbia River Basin and sensitivity results with varying substrate concentrations. The detailed descriptions of the individual files are included in the readme.txt file. </strong></p>
Combined effects of stream hydrology and land use on basin-scale hyporheic zone denitrification in the Columbia River Basin
<p><strong>This data includes inputs and outputs of a coupled carbon-nitrogen river corridor model (RCM) for the Columbia River Basin and sensitivity results with varying substrate concentrations, and random forest model results with key model inputs/watershed/stream variables. The detailed descriptions of the individual files are included in the readme.txt file. </strong></p>
Fig. 4 in Distribution of Meiobenthic Arthropod Communities in the Hyporheic Zone of Nakdonggang
Fig. 4. Composition of meiobenthic faunal groups in the hyporheic zone of Nakdonggang main stream.
Fig. 2 in Distribution of Meiobenthic Arthropod Communities in the Hyporheic Zone of Nakdonggang
Fig. 2. The detailed dimensions of the sampling core used in this study.
Fig. 1 in Distribution of Meiobenthic Arthropod Communities in the Hyporheic Zone of Nakdonggang
Fig. 1. Map showing the sampling sites at Nakdonggang.
FIGURE 2 in A new species of the genus Atopobathynella Schminke, 1973 (Crustacea, Syncarida, Bathynellacea) from the hyporheic zone of the River Godavari, South India
FIGURE 2. Atopobathynella operculata sp. n., adult female. A, antennule, dorsal (holotype); B, antenna, dorsal; C, labrum, ventral; D–F, mandible, in different views; G, same, pars incisiva, frontal (B–G paratype 2); H, maxillule; I, maxilla (H–I holotype). Scale J equals 50 µm, for A: scale K equals 25 µm, for B–I.
FIGURE 4 in A new species of the genus Atopobathynella Schminke, 1973 (Crustacea, Syncarida, Bathynellacea) from the hyporheic zone of the River Godavari, South India
FIGURE 4. Atopobathynella operculata sp. n., adult male. A, second antennular segment (allotype); B–C, adult male thoracopod VIII: B, latero-external view (allotype); C, ventral view (paratype). (Abbreviations: Basexp = basexopod, Ldent = dentate lobe, Lex = external lobe, Lin = internal lobe). Scale equals 20 µm.
FIGURE 3 in A new species of the genus Atopobathynella Schminke, 1973 (Crustacea, Syncarida, Bathynellacea) from the hyporheic zone of the River Godavari, South India
FIGURE 3. Atopobathynella operculata sp. n., A–C, adult female (holotype): A, thoracopod I; B, thoracopod II; C, thoracopod VII. Scale equals 50 µm.
FIGURE 1 in A new species of the genus Atopobathynella Schminke, 1973 (Crustacea, Syncarida, Bathynellacea) from the hyporheic zone of the River Godavari, South India
FIGURE 1. Atopobathynella operculata sp. n., adult female. A, pleotelson, lateral (paratype 1); B, pleotelson, ventral (holotype); C. thoracopod VIII and pleopod 1 (paratype 1). Scale equals 50 µm.
FIGURE 8. Tree number 8 in A new genus and species of Ingolfiellidae (Crustacea, Ingolfiellida) from the hyporheic zone in the Sierra de la Ventana, and its biogeographic relevance
FIGURE 8. Tree number 8 (rooted by using user-specified out group): Tree length: 276. Consistency indeX (CI): 0.348, Retention indeX (RI): 0.547. Black dot indicates the node eXplained in the teXt.
FIGURE 3. Yacana ventania n. gen. n in A new genus and species of Ingolfiellidae (Crustacea, Ingolfiellida) from the hyporheic zone in the Sierra de la Ventana, and its biogeographic relevance
FIGURE 3. Yacana ventania n. gen. n. sp. A. Right mandible, paratype female. B. Left mandible, paratype female. C. Right mandible, paratype male. D. Left mandible, paratype male. E. Right maXilla 1, paratype female. F. Left maXilla 1, paratype female. G. Detail of inner seta of outer lobe of maXilla 1, indicated with an arrow on left maXilla 1. H. Right and left maXilla 2, respectiVely. I. Right maXilliped, paratype female. J. Left maXilliped, paratype female. Scales bars: 50 µm.
FIGURE 4. Yacana ventania n. gen. n in A new genus and species of Ingolfiellidae (Crustacea, Ingolfiellida) from the hyporheic zone in the Sierra de la Ventana, and its biogeographic relevance
FIGURE 4. Yacana ventania n. gen. n. sp. A. Right gnathopod 1, lateral, paratype male. B. Right gnathopod 1, detail of palm and dactylus, paratype male. C. Left gnathopod2, lateral, paratype male. D. Left gnathopod 2, detail of palm and dactylus, paratype male. Scale bars: 50 µm.
FIGURE 7. Yacana ventania n. gen. n in A new genus and species of Ingolfiellidae (Crustacea, Ingolfiellida) from the hyporheic zone in the Sierra de la Ventana, and its biogeographic relevance
FIGURE 7. Yacana ventania n. gen. n. sp. A. Pleopod 1, paratype female. B. Pleopod 2, paratype female. C. Pleopod 3, paratype female. D. Pleopod 1, allotype male. E. Pleopod 2, allotype male. F. Pleopod 3, allotype male. G. Left uropod 1, paratype female. H. Right uropod 2, paratype female. I. Left uropod 1, allotype male. J. Uropods 2, detail of inner side, allotype male. K. Uropods 3 and telson, paratype female, lateral View. L. Detail of uropods and telson, paratype female, lateral View. Scale bars: 100 µm.
FIGURE 2. A. Yacana ventania n. gen. n in A new genus and species of Ingolfiellidae (Crustacea, Ingolfiellida) from the hyporheic zone in the Sierra de la Ventana, and its biogeographic relevance
FIGURE 2. A. Yacana ventania n. gen. n. sp., holotype female. Scale bar: 1 mm. B. Antenna 1, paratype female. Scale bar: 100 µm. C. Detail of antenna 1. Scale bar: 100 µm. D. Left antenna 2 and basis-merus of right antenna 2, the arrows show the gland cones, paratype female. Scale bar: 50 µm. E. Labrum, paratype female. Scale bar: 100 µm. F. Labium, paratype female. Scale bar: 50 µm.
FIGURE 1. A in A new genus and species of Ingolfiellidae (Crustacea, Ingolfiellida) from the hyporheic zone in the Sierra de la Ventana, and its biogeographic relevance
FIGURE 1. A. Map of a section of Ventana Stream showing the sampling site where Yacana ventania n. gen. n. sp. was collected. B. Rithronic sector of Ventana Stream showing the different size of clasts where the hyporheic water emerges. C. Sampling of the material.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
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.