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50 results for “Lake profiles”
Measurements of water levels and water temperature profiles in Lake Kinneret, in summer, during the period (2000 – 2020)
<p><em>The datasets include measurements of water levels and water temperature profiles in Lake Kinneret, in summer, during the period (2000 – 2020). </em><em>Lake Kinneret is located in Israel. </em>Shipboard measurements of water temperature profiles were taken at the deepest point of ~40 m near the lake center (32.82 N; 35.60 E). The <em>AML MINOS X probe was used (specifications are available online at <a href="https://geo-matching.com/ctd-systems/minos-x-ctd/svp">https://geo-matching.com/ctd-systems/minos-x-ctd/svp</a>). </em><em>Data of water temperature profiles are associated with the Kinneret Limnological Laboratory, Israel Oceanographic and Limnological Research (</em><a href="http://kinneret.ocean.org.il/ar_3d_vb.aspx"><em>http://kinneret.ocean.org.il/ar_3d_vb.aspx</em></a><em> ). Data of Lake Kinneret water levels are associated with the Israel Water and Sewage Authority (</em><a href="https://www.gov.il/en/departments/water_authority/govil-landing-page">https://www.gov.il/en/departments/water_authority/govil-landing-page</a><em> ). Data format: xlsx file. </em>There are two sheets in the Excel file: the first sheet includes water temperature profiles, while the second sheet includes lake water levels, in summer, during the period (2000 – 2020). </p>
Weekly and high frequency temperature profile data and Secchi depth, Mohonk Lake, NY, USA, 1985 to 2017
We, the staff, volunteers and associates of the Mohonk Preserve, have been collecting profiles of temperature data and Secchi depths in Mohonk Lake beginning in 1985. Mohonk Lake is small (6.9 ha), deep (zmax=18.5m), oligo-mesotrophic lake, dimictic, glacially formed system on the northern Shawangunk Ridge, New York State, USA. The temperature profiles can provide information on the lake thermal structure and can be used to calculate physical variables such as thermocline depth and thermal stability. We collected data weekly with two exceptions: 1) 01 Jan 1985 to 09 August 1985 when temperature profiles were collected daily and 2) in 2017, when temperature profiles were collected every 15 minutes and down-sampled to daily means.
McMurdo Dry Valleys LTER: Phytoplankton water column profiles in Lake Bonney, Antarctica from 2004 to 2015
Lake Bonney (McMurdo Dry Valleys, east Antarctica) represents a year-round refugia for life adapted to extreme conditions. Lake level has risen by more than 3 m since 2004, but impacts of rapid lake level rise on phytoplankton community structure is also poorly understood. From 2004 to 2015, in concert with the summer limnological samplings, an in situ submersible spectrofluorometer (bbe FluoroProbe) was used to profile phytoplankton throughout the water columns of east and west lobes Lake Bonney to quantify the vertical structure of four functional algal groups (green algae, brown/mixed algae, cryptophytes, cyanobacteria). Our findings showed that phytoplankton communities were differentially impacted by physical and chemical factors over long-term vs. seasonal time scales. Following a summer of rapid lake level rise (2010-11), an increase in depth integrated chlorophyll a (chl-a) occurred in Lake Bonney caused by stimulation of photoautotrophic green algae. Collectively our data reveal that phytoplankton groups possessing variable trophic abilities are differentially competitive during seasonal and long-term time scales owing to periods of higher nutrients (photoautotrophs) vs. light/energy limitation (mixotrophs).
Data from: Molecular profiling of diatom assemblages in tropical lake sediments using taxon-specific PCR and Denaturing High-Performance Liquid Chromatography (PCR-DHPLC)
Here we present a protocol to genetically detect diatoms in sediments of the Kenyan tropical Lake Naivasha, based on taxon-specific PCR amplification of short fragments (approx. 100 bp) of the small subunit ribosomal (SSU) gene and subsequent separation of species-specific PCR products by PCR-based DHPLC. An evaluation of amplicons differing in primer specificity to diatoms and length of the fragments amplified demonstrated that the number of different diatom sequence types detected after cloning of the PCR products critically depended on the specificity of the primers to diatoms and the length of the amplified fragments whereby shorter fragments yielded more species of diatoms. The DHPLC was able to discriminate between very short amplicons based on the sequence difference, even if the fragments were of identical length. and if the amplicons differed only in a small number of nucleotides. Generally the method identified the dominant sequence types from mixed amplifications. A comparison with microscopic analysis of the sediment samples revealed that the sequence types identified in the molecular assessment corresponded well with the most dominant species. In summary, the PCR-based DHPLC protocol offers a fast, reliable, and cost-efficient possibility to study DNA from sediments and other environmental samples with unknown organismic content, even for very short DNA fragments.
Data from: Molecular profiling of diatom assemblages in tropical lake sediments using taxon-specific PCR and Denaturing High-Performance Liquid Chromatography (PCR-DHPLC)
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Data from: Transcriptome profiling of immune tissues reveals habitat-specific gene expression between lake and river sticklebacks
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Pre-Delta-X: L3 AirSWOT-derived Water Level Profiles, Wax Lake Outlet, LA, USA, 2015
This dataset contains water level profiles generated from the AirSWOT data collected in the Atchafalaya Basin in Southern Louisiana, USA, within the Mississippi River Delta (MRD) floodplain. Part of the Pre-Delta-X Campaign, AirSWOT used near-nadir wide-swath Ka-band radar interferometry to measure water-surface elevation and uncertainty in May 2015. This Level 3 (L3) AirSWOT dataset is in the form of numerous profiles of water level along the Wax Lake Outlet.
Pre-Delta-X: Lidar-derived Water Level Profiles in the Wax Lake Outlet, LA, USA, 2016
This dataset contains lidar-derived water surface elevation profiles for river channels between Wax Lake, in the Atchafalaya River Basin of the Mississippi River Delta, and the Gulf of Mexico. The provided elevation profiles (i.e., water levels) were estimated using remotely sensed lidar data in combination with in situ field measurements of water levels for elevation calibration and to quantify uncertainty in estimates. The lidar data were collected during the Fall 2016 Pre-Delta-X Campaign using an Airborne Snow Observatory (ASO) lidar instrument. The results are time-specific water levels measured as elevation in meters with respect to the North American Vertical Datum 1988 (NAVD 88) geoid (or orthometric height) and the World Geodetic System 1984 (WGS 84) ellipsoidal surface (or ellipsoidal/GPS height) along the water channels in this drainage system.
Transcriptional profiles associated with Context dependent behavior in Rock X Sand F1 in Lake Malawi Cichlids
GEO Series GSE122500. Petrotilapia nigra x Aulonocara baenschi; Maylandia zebra x Tramitichromis intermedius; Maylandia zebra x Mchenga conophoros; Petrotilapia nigra x Mchenga conophoros; Labeotropheus fuelleborni x Mchenga conophoros. 10 samples. Type: Expression profiling by high throughput sequencing.
Observational data for "A New Lake Classification System based on Thermal Profiles to Better Understand the Most Dominant Lake Type on Earth"
<p>Previously unpublished continuous water temperature data used in the study "A New Lake Classification System based on Thermal Profiles to Better Understand the Most Dominant Lake Type on Earth". Table S1 links to previously published data in other manuscripts.</p>
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