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19 results for “benthic organisms”
Benthic chlorophyll, density, porosity, and organic content concentrations and gross oxygenic photosynthesis rates in surficial estuarine intertidal sediments at sites on Sapelo Island and near the Satilla River from January, April, June and July 2001
Seasonal patterns of estuarine creek-bank and intertidal marsh benthic chlorophyll, density, porosity, and organic content were investigated at several sites on Sapelo Island and the Satilla River in coastal Georgia. Benthic chlorophyll, density, porosity, and organic content were measured in the bulk surface centimeter depth of sediment. Several relatively pristine sites on Sapelo Island (Moses Hammock and Dean Creek) and a presumably heavily impacted site (Dover Bluff) show similar levels of chlorophyll concentration across bank and marsh zones with higher photosynthetic biomass in the spring season.
Benthic chlorophyll, density, porosity, and organic content concentrations in surficial estuarine intertidal sediments at sites on Sapelo Island and near the Satilla River from June and August 2002
Seasonal patterns of estuarine creek-bank and intertidal marsh benthic chlorophyll, density, porosity, and organic content were investigated at several sites on Sapelo Island and the Satilla River in coastal Georgia. Benthic chlorophyll, density, porosity, and organic content were measured in the bulk surface centimeter depth of sediment. Several relatively pristine sites on Sapelo Island (Moses Hammock and Dean Creek) and a presumably heavily impacted site (Dover Bluff) show similar levels of chlorophyll concentration across bank and marsh zones with higher photosynthetic biomass in the spring season.
StreamFRE: Benthic Organic Matter in Prieta Stream
Measurements of benthic organic matter (BOM) in Prieta Stream, as part of the Stream Flow Reduction Experiment (StreamFRE). Background: StreamFRE started in October 2016 with the goal of assessing the effects of droughts on stream ecosystems. The project is designed to assess the effect of flow reduction, the main effect of droughts on streams. We collected pre-manipulation data from October 2016 to September 2017, when Hurricanes Irma and Maria hit Puerto Rico. The project became a hurricane impact assessment from September 2017 to early 2022, when the flow reduction is scheduled to start. BOM is measured using corer samplers in pools and Surber samplers in riffles. Samples are collected monthly as part of our macroinvertebrate sampling. Support for this work was provided by grants BSR-8811902, DEB-9411973, DEB-9705814 , DEB-0080538, DEB-0218039 , DEB-0620910 , DEB-1239764, DEB-1546686, and DEB-1831952 from the National Science Foundation to the University of Puerto Rico as part of the Luquillo Long-Term Ecological Research Program. Additional support provided by the University of Puerto Rico and the International Institute of Tropical Forestry, USDA Forest Service.
SBC LTER: Santa Cruz Island: Abundance and Biomass of Benthic Organisms (food resource collection)
These data describe the abundance of benthic organisms as determined by random quadrat scrapings. These data represent the availability of food resources for fish at various depths, and are part of a long term investigation of temporal patterns in reef community composition. The sampling locations in this dataset include three sites along the north shore of Santa Cruz Island. Data collection began in 1982 and this dataset is updated annually.
Nutrient and microbial characteristics of mountain stream fine benthic organic matter in the H.J. Andrews Experimental Forest, 1995 to 1996
Numerous studies have examined qualitative shifts in leaf litter composition in the early to middle stages of decomposition. (Suberkropp, Godshalk and Klug 1976, Petersen and Cummins 1974, Findlay and Arsuffi 1989) which have shown that changes in leaf species and composition lead to marked differences in microbial processing rates (Suberkropp and Klug 1976) and that leaf and woody debris decomposition rates are related to both litter C:N and extracellular enzyme activities (Taylor et al. 1989, Sinsabaugh et al. 1992, Sinsabaugh and Linkins 1993). Since most organic matter moves through streams as fine particulate organic matter (FPOM) (Sinsabaugh et al. 1992) it is a potentially important link between terrestrial and aquatic environments. Although there is increasing interest in understanding FPOM dynamics, there have been few studies of factors influencing stream sediment FBOM chemical or microbial characteristics.
Abundance of stream macroinvertebrates and benthic organic material in CPCRW
During the summer of 1995 the abundance of stream macro invertebrates and benthic organic material in six of the streams in CPCRW was studied calculated. This dataset is a result of the biomass of these samples.
Biomass of stream macroinvertebrates and benthic organic material in CPCRW
Biomass of stream macroinvertebrates and benthic organic material in CPCRW collected in basins of Caribou Creek in 1995 and 1996. Data originally submitted by Jock Irons.
Benthic organic matter (BOM) standing crops along the Ball Creek / Coweeta Creek elevational gradient at the Coweeta Hydrologic Laboratory from 1991 to 1992
We investigated how benthic organic matter (BOM) standing CR varied over space and time in the context of an elevational stream-size gradient. Samples were collected with a stratified random procedure to also study how BOM varied with respect to the major habitat patches within the stream. Habitat patch include cobble-riffle, sandy-reach, and rock. Benthic organic matter was collected efuarterly from streams draining a 9-yr-old clearcut, an 18-yr-old "old-field", a 25-yr-old successional forest, and two reference watersheds at Coweeta Hydrologic Laboratory in the Appalachian Mountains of North Carolina, USA. Samples were separated into large benthic organic matter (LBOM >1 mm) and fine benthic organic matter (FBOM <1 mm). An additional survey of large (>5 cm diam.) and small (1-5 cm diam.) wood was conducted. This study was conducted from 1991 to 1992.
Benthic macroinvertebrates of 63 northern Finnish streams along a dissolved organic carbon gradient
<p>Concentrations of dissolved organic carbon (DOC) have increased over the past few decades, causing freshwater browning. The impacts of browning on biodiversity have been little studied, despite many of the individual stressors associated with browning being known to control freshwater communities. We explored the responses of benthic invertebrates along a wide gradient of DOC concentrations (3.6 mg to 27 mg L<sup>-1</sup>) in 63 boreal streams variously impacted by peatland drainage or peat production. DOC was a prime determinant of macroinvertebrate diversity and abundance, with the strongest negative response in algal scrapers. Threshold indicator taxa analysis indicated a community change at 12-13 mg DOC L<sup>-1</sup>, with only four taxa increasing, while 13 taxa decreased along the DOC gradient. Our findings of both a gradual loss and an abrupt change of biodiversity along a browning gradient provide a benchmark against which changes to stream biodiversity relative to the predicted browning trend can be gauged.</p>
Benthic macroinvertebrates of 63 northern Finnish streams along a dissolved organic carbon gradient
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Fig. 1 a –d Marine benthic organisms used for bio-optical measurements. a Boneccia viridis, b Isodictya pacmata, c Hymedesmia paupertas, d in Development of hyperspectral imaging as a bio-optical taxonomic tool for pigmented marine organisms
Fig. 1 a –d Marine benthic organisms used for bio-optical measurements. a Boneccia viridis, b Isodictya pacmata, c Hymedesmia paupertas, d Hymedesmia sp.
Figure 4 in Community properties of benthic molluscs as indicators of environmental stress induced by organic enrichment
Figure 4. MDS plots of Functional Feeding Groups (FFG) where mean abundance of each group is superimposed.
Figure 3 in Community properties of benthic molluscs as indicators of environmental stress induced by organic enrichment
Figure 3. MDS plot (a) and cluster analysis (b) of species abundances highlighting three main groups of areas.
Figure 2 in Community properties of benthic molluscs as indicators of environmental stress induced by organic enrichment
Figure 2. Probability funnels of diversity indices Δ+ (a) and Λ+ (b) for all sampling stations and seasons in the study area.
Figure 1. A in Community properties of benthic molluscs as indicators of environmental stress induced by organic enrichment
Figure 1. A map of the island of Lesvos indicating Gera Gulf, the study area (Palioloutro) where the fish farm unit is located and the sampling sites.
Organic geochemical proxies, foraminieral assemblages and isotopic geochemistry of benthic foraminifera from core NYA17-154
<p>The dataset contains all the data from cor NYA17-154 presented in Tesi et al. 2021 Science Advances</p> <p><strong>Rapid Atlantification along the Fram Strait at the beginning of the 20<sup>th</sup> century </strong></p> <p>Tesi. Tommaso<sup>1*</sup>, Francesco Muschitiello<sup>2,3*</sup>, Gesine Mollenhauer<sup>4</sup>, Stefano Miserocchi<sup>1</sup>, Leonardo Langone<sup>1</sup>, Chiara Ceccarelli<sup>5</sup>, Giuliana Panieri<sup>6</sup>, Jacopo Chiggiato<sup>7</sup>, Alessio Nogarotto<sup>1,8</sup>, Jens Hefter<sup>4</sup>, Gianmarco Ingrosso<sup>1</sup>, Federico Giglio<sup>1</sup>, Patrizia Giordano<sup>1</sup>, Lucilla Capotondi<sup>7</sup></p> <p>(1) Istituto di Scienze Polari - Consiglio Nazionale delle Ricerche ISP-CNR, 40129 Bologna, Italy</p> <p>(2) Department of Geography - University of Cambridge, Cambridge, CB2 3EN, UK</p> <p>(3) NORCE Norwegian Research Centre, 5007 Bergen, Norway</p> <p> (4) Alfred Wegener Institute - Helmholtz Center for Polar and Marine Sciences, 27570 Bremerhaven, Germany</p> <p>(5) Dipartimento di Scienze Biologiche, Geologiche ed Ambientali – BiGeA, 40126 Bologna, Italy</p> <p>(6) CAGE ‐ Center of Arctic Gas Hydrate, Environment and Climate, Department of Geolosciences, UiT The Arctic University of Norway, Tromsø, Norway</p> <p> (7) Istituto di Scienze Marine - Consiglio Nazionale delle Ricerche ISMAR-CNR, 40129 Bologna, Italy</p> <p>(8) Campus Scientifico, Università Ca’ Foscari Venezia, 30172 Venezia Mestre, Italy</p> <p> </p> <p>The data encompasses:</p> <p>- age-depth model</p> <p>- alkenone derived sea surface temperature</p> <p>- TEX86-L derived water temperature</p> <p>- stable oxygen isotope data of N. labradorica</p> <p>- benthic foraminifera assemblages</p> <p>- retene content</p>
A Bayesian framework for estimating parameters of a generic toxicokinetic model for the bioaccumulation of organic chemicals by benthic invertebrates: proof of concept with PCB153 and two freshwater species.
<p>R Codes and corresponding .csv data files for estimating toxicokinetic model parameters for both chironomids and gammarids exposed to PCB153.</p>
Figure 5 in Community properties of benthic molluscs as indicators of environmental stress induced by organic enrichment
Figure 5. MDS plots of Zoogeographical Categories Groups (ZCG) where mean abundance of each group is superimposed.
Figure 6 in Community properties of benthic molluscs as indicators of environmental stress induced by organic enrichment
Figure 6. Effect of increasing organic load on trophic net structure.
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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.