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103 results for “lake water quality”
Water Quality (WQ) monitoring program for Clear Lake, CA
Clear Lake is a large, shallow, hypereutrophic lake in Northern California, USA. Clear Lake is an important water resource for the surrounding community offering many cultural and recreational opportunities and provides drinking water for more than half of the region's population. Despite these many ecosystem services, Clear Lake suffers from Harmful Algal Blooms (HABs) of cyanobacteria. This project aims to understand the lake and watershed processes contributing to the negative impacts on the lake water quality and ecosystem health with a goal of rehabilitating the lake. The UC Davis Tahoe Environmental Research Center conducted a 5-year (2019-2023) water quality monitoring program collecting monitoring data to better understand the physical, chemical, and biological processes affecting lake quality. Data from this monitoring program are publicly available here (DOI of EDI data repository to be provided when available). This project is funded by the California Department of Fish and Wildlife through California State Assembly Bill 707 (2017), the California Natural Resources Agency, and the UC Davis Tahoe Environmental Research Center.In addition to this overarching project, we completed additional biological and optical measurements over a shorter 1.5-year time period (Jul 2021 - Oct 2022) with the goal of supporting Phytoplankton Community Composition (PCC) and Cyanobacteria genera differentiation algorithm development from remotely sensed hyperspectral measurements. Three of these sampling events were completed coincident to whole-lake hyperspectral images collected by the DESIS sensor. These additional data included High-Performance Liquid Chromatography (HPLC) phytoplankton pigment data and above-water spectroradiometry (SVC HR-1024i) measurements. This additional work was supported by a NASA Office of STEM Engagement (OSE) graduate student fellowship awarded to Samantha Sharp in 2020 (Grant Number 80NSSC20K1458).
Indicators of water quality in the Puruvesi Lake from 2008 to 2013 (OAL-FI)
<p>This dataset contains monthly water quality indicators ( <strong>Chlorophyll-a, Particulate inorganic carbon (PIC) and Particulate organic carbon (P)C)) </strong>derived from Remote Sensing MODIS observations from 2008 to 2013. </p> <p><strong>Chlorophyll-a</strong></p> <p>Chlorophyll-a is a measure of the amount of algae growing in a waterbody. It can be used to classify the trophic condition of a waterbody. Although algae are a natural part of freshwater ecosystems, too much algae can cause aesthetic problems such as green scums and bad odors, and can result in decreased levels of dissolved oxygen. Some algae also produce toxins that can be of public health concern when they are found in high concentrations.</p> <p><strong>Particulate inorganic carbon (PIC)</strong></p> <p>Particulate inorganic carbon or calcium carbonate, is a major component of the global ocean carbon cycle. Through the process of calcification, marine organisms produce PIC shells and carbon dioxide from calcium ions and bicarbonate in seawater. These organisms, upon death, eventually sink to the ocean floor. During this process, the calcium carbonate shells may partially dissolve and what remains accounts for about 75% of carbon deposition on the seafloor (Groom & Holligan, <a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2017JC013146"><strong>1987</strong></a>). Moreover, calcium carbonate production leads to an increase in partial pressure of dissolved carbon dioxide in the surface layer of the ocean, weakening the effectiveness of the carbon dioxide sink produced by photosynthesis (Shutler et al., <a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2017JC013146"><strong>2013</strong></a>).</p> <p><strong>Particulate onorganic carbon (POC)</strong> is one of the main pools of organic carbon found in the ocean. It is composed of living material (Phytoplankton, zooplanton, bacteria etc) and detritus. POC is important in terms of the global carbon cycle and it is the main pathway by which organic carbon formed via photosynthesis in the oceans surface layers is transferred to deeper ocean layers where it may be sequestered.</p> <p>In order to maintain the results in a easy to use platform, a GIS project is created using QGIS software (open source) to easily manage, edit, export and create layouts from the results. The layers are organized as follows:</p> <p><strong>OPERANDUM_QGIS_prj.qgz</strong><strong>:</strong> main QGIS project file that includes all layers</p> <p><strong>PuruvesiLake</strong><strong> (shapefile):</strong> Puruvesi lake exact boundary</p> <p><strong>PuruvesiLake_with_buffer (shapefile): </strong>Puruvesi lake boundary with a buffer of 1 km to make sure that marginal pixels are within the boundary for the analysis</p> <p><strong>P</strong><strong>I</strong><strong>CMa</strong><strong>p</strong><strong>_MODIS: </strong>60 monthly layers of estimated Particulate inorganic carbon from January 2008 until January 2013</p> <p><strong>Chlorophyll-a</strong><strong>:</strong> 60 monthly layers of estimated Chlorophyll-a content from January 2008 until January 2013</p> <p><strong>POCMap_MODIS</strong><strong>:</strong> 60 monthly layers of estimated Particulate organic carbon from January 2008 until January 2013</p>
Water quality measurements from the Great Lakes
Water quality measurements taken in the Great Lakes region of the United States.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
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.