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29 results for “composition surveys”
Submersed aquatic vegetation community composition in the Sacramento-San Joaquin Delta integrated across four surveys
Submersed aquatic vegetation (SAV) has become widespread in the Sacramento-San Joaquin Delta (Delta), and the diverse SAV assemblage is dominated by non-native species. SAV negatively impacts this estuarine ecosystem by impeding flows needed for water delivery and flood control, degrading habitat needed by native species, increasing breeding habitat for disease-vectoring mosquitoes, harboring non-native predatory fish, and hindering water recreation. The goal of this published integrated dataset is to facilitate study of these impacts. This data set includes four surveys conducted in the region during 2008-2021. Two of these are short-term special studies that have been completed, and two are ongoing long-term annual surveys. The nearshore survey of SAV and largemouth bass was conducted by the University of California-Davis (UC-Davis) at sites across the Delta during 2008-2010. The Aquatic Weed Control Action was completed by the Department of Water Resources as part of the Delta Smelt Resiliency Strategy and included monthly surveys of four sites during 2017-2018. The ongoing survey of Franks Tract is conducted annually by the SePRO corporation and the Division of Boating and Waterways, and available data are from 2014-2021. The ongoing annual survey conducted by the UC-Davis Center for Spatial Technologies and Remote Sensing covers many areas of the Delta and spans 2007-2008 and 2014-2021. Additional data from these ongoing surveys and data from other surveys will be added in subsequent versions of this data set.
Geographic coordinates, soil properties, plant species composition and vegetation survey data in the study on tidal marshes of the Ogeechee, Altamaha and Satilla estuaries in Georgia, USA
We examined patterns of habitat function (plant species richness), productivity (plant aboveground biomass and total C), and nutrient stocks (N and P in aboveground plant biomass and soil) in tidal marshes of the Satilla, Altamaha, and Ogeechee Estuaries in Georgia, USA. We worked at two sites within each salinity zone (fresh, brackish, and saline) in each estuary, sampling a transect from the creekbank to the marsh platform. Site-scale and plot-scale species richness decreased from fresh to saline sites. Standing crop biomass and total carbon stocks were greatest at brackish sites, followed by freshwater then saline sites.
Vegetation composition for 84 sites in the Regional Site Network, compilation from previous surveys.
Many sites in the LTER regional site network (RSN) were adopted from preexisting site networks. Prior to becoming a part of the RSN, releve surveys were conducted at or near the current RSN site using the Braun-Bluanquet cover estimate scale. These data have been compiled for use as a baseline. It is important to note that many of the young successional sites were last surveyed in 2006, 2 years after fire.
Fig. 3 in Call survey indicates rainbow trout farming alters glassfrog community composition in the Andes of Ecuador
Fig. 3. Map of the study area. Inset: Pichincha Province, Ecuador. Main: Blue points indicate non-trout farm sites whereas red points indicate trout farm sites. Yellow line represents the equator (latitude 0).
Fig. 2 in Call survey indicates rainbow trout farming alters glassfrog community composition in the Andes of Ecuador
Fig. 2. Glassfrog species found during surveys. (A) Centrolene heloderma, (B) Centrolene ballux, (C) Esparana prosoblepon, (D) Nymphargus lasgralarias, (E) Centrolene peristictum, (F) Nymphargus grandisonae, (G) Centrolene lynchi, (H) Egg mass from C. ballux. Nymphargus griffithsi was not encountered during the 2017 survey but has been documented at Kathy's creek in 2012 and 2013 (by Jane A. Lyons). Photographs by Dana G. Wessels (A–F) and Timothy J. Krynak (G–H).
Fig. 1 in Call survey indicates rainbow trout farming alters glassfrog community composition in the Andes of Ecuador
Fig. 1. Trout farming in the Mindo region of Ecuador utilizes a flow-through aquaculture technique. Stream water is diverted into tandem raceways/holding reservoirs and then flows through these reservoirs back into the natural stream system. This figure displays a panoramic view of Finca de Jaime's (FJ) set-up. Photograph by Katherine L. Krynak.
Fig. 4 in Call survey indicates rainbow trout farming alters glassfrog community composition in the Andes of Ecuador
Fig. 4. Two-dimensional NMDS ordination of survey sites and glassfrog species based upon presence of frogs audibly documented in 2017 survey conducted in the Mindo region of Ecuador (Stress = 3%). Red points and labels represent glassfrog species; grey points represent trout farms; and black points represent non-trout farms. RSR = Río Santa Rosa, LC = Lucy's Creek, Bcrk = Ballux Creek, KC = Kathy's Creek, M = Michelle's, C = tributary of the Chalguayacu Grande River, 5F = Five Frog Creek, LRSR = Lower Río Santa Rosa, ST = Santa Teresita, FJ = Finca de Jaime, LS = La Sierra, VC = Verdecocha, EP = El Paraíso del Pescador. Trout farms EP, LS, and VC are not included in the analysis because glassfrogs were not observed at these sites. A significant difference in glassfrog community composition between trout farm and non-trout farm sites was indicated by MRPP (delta = 0.59, A = 0.11, P = 0.03). NMDS1 correlated with elevation; NMDS2 correlated with: percent canopy openness, dissolved oxygen (mg/L), total dissolved solids (mg/L), and conductivity (µS).
FIGURE 4 in Building a baseline: a survey of the composition and distribution of the ichthyofauna of Guanabara Bay, a deeply impacted estuary
FIGURE 4 | Distribution of absolute richness (A) and species density (B) per km2 at Guanabara Bay, Rio de Janeiro, Brazil.
FIGURE 3 in Building a baseline: a survey of the composition and distribution of the ichthyofauna of Guanabara Bay, a deeply impacted estuary
FIGURE 3 | Ichthyofauna rates found for Guanabara Bay, Rio de Janeiro, Brazil. A. As a whole and for the B. Lower, C. Middle, and D. Upper estuaries separately, where "mg" corresponds to the number of extra samples needed to reach a "g" for estimated richness. When the line touches the x axis (mg = 0), the "g" values are reached by our study, that is, the value in which extra collections are not necessary.
FIGURE 2 in Building a baseline: a survey of the composition and distribution of the ichthyofauna of Guanabara Bay, a deeply impacted estuary
FIGURE 2 | Rarefaction curves for Guanabara Bay's ichthyofauna richness, Rio de Janeiro, Brazil. A. For the bay as a whole, and for the estuary compartments separately: B. Lower estuary, C. Middle estuary and D. Upper estuary.
FIGURE 1 in Building a baseline: a survey of the composition and distribution of the ichthyofauna of Guanabara Bay, a deeply impacted estuary
FIGURE 1 | Guanabara Bay map, Rio de Janeiro, divided into five km x five km quadrants. Different shades of blue indicate which estuary compartment (upper, middle or lower) the quadrant belongs to.
Text-fig. 5. The generic composition of the rodent faunas on the family and subfamily level. The black line sets apart subfamilies of the Muridae (right side) from other rodents (left). The proportion of murid genera increases over time. in Generically Speaking, A Survey On Neogene Rodent Diversity At The Genus Level In The Now Database
Text-fig. 5. The generic composition of the rodent faunas on the family and subfamily level. The black line sets apart subfamilies of the Muridae (right side) from other rodents (left). The proportion of murid genera increases over time.
Data from: A 454 survey reveals the community composition and core microbiome of the common bed bug (Cimex lectularius) across an urban landscape
Elucidating the spatial dynamic and core constituents of the microbial communities found in association with arthropod hosts is of crucial importance for insects that may vector human or agricultural pathogens. The hematophagous Cimex lectularius (Hemiptera: Cimicidae), known as the human bed bug, has made a recent resurgence in North America, as well as worldwide, potentially owing to increased travel, climate change and resistance to insecticides. A comprehensive survey of the bed bug microbiome has not been performed to date, nor has an assessment of the spatial dynamics of its microbiome. Here we present a survey of internal and external bed bug microbial communities by amplifying the V4–V6 hypervariable region of the 16S rDNA gene region followed by 454 Titanium sequencing using 31 individuals from eight distinct collection locations obtained from residences in Cincinnati, OH. Across all samples, 97% of the microbial community is made up of two dominant OTUs, previously identified as the α-proteobacterium Wolbachia and an unnamed γ-proteobacterium from the Enterobacteriaceae. Microbial communities varied among host locations for measures of community diversity and exhibited structure according to collection location. This broad survey represents the most in-depth assessment, to date, of the microbes that associate with bed bugs.
The species composition data from the larvae that were collected in the field, and all the data from the complimentary humans, livestock and wildlife surveys.
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Data from: A 454 survey reveals the community composition and core microbiome of the common bed bug (Cimex lectularius) across an urban landscape
Open the record for dataset details and reuse information.
Survey of microbiota composition differences between obese subjects before and after Lactiplantibacillus plantarum probiotic treatment
GEO Series GSE222755. Homo sapiens. 68 samples. Type: Other.
Kelp forest biomass, species composition and depth distribution survey at Hansneset in Kongsfjorden, Svalbard
<p>Macroalgal surveys were performed at Hansneset, Blomstrand in Kongsfjorden, Svalbard, from the infralittoral fringe down to 15 m depth in June – August 2021. This dataset is part of a time series currently spanning over 25 years and complements the studies conducted in 1996/98 (Hop et al., 2012) and 2012-14 (Bartsch et al., 2016). The aim was to document changes in Arctic kelp forest dynamics in an Arctic fjord system influenced by glacial melt by repeatedly sampling the same site in a standardized manner. As ocean temperatures in the Arctic have risen substantially and underwater light climate continuously deteriorated over this time period, alterations were observed in the seaweed community, especially kelps as major coastal foundation species. This Zenodo upload contains all datasets supporting the findings of the manuscript Düsedau et al. (2023) "Arctic kelp forest decline - a consequence of melting glaciers?".</p>
MMS 1 Hot Plasma Composition Analyzer (HPCA) Time of Flight, TOF, Counts, Level 2 (L2), Survey Mode, 0.625 s Data
Hot Plasma Composition Analyzer (HPCA) Time of Flight, TOF, Counts, Level 2, Survey 10 s Data. The MMS HPCA instruments measure the energy and composition of magnetospheric plasmas in the energy range from 1 eV to 40 keV. An electrostatic energy analyzer (ESA) that is optically coupled to a carbon-foil based Time-of-Flight (TOF) section comprises each HPCA. The basic HPCA data product is an array of counts for 5 ion species, at 63 energies, for each of 16 elevation anodes. Sixteen basic products, also called azimuths, are acquired every 10 s; half a spacecraft spin period nominally has 16 azimuths. The five ion species are protons (H+), alpha particles (He++), helium ions (He+), singly charged Oxygen (O+), and background counts.
MMS 4 Hot Plasma Composition Analyzer (HPCA) Moments, Level 2 (L2), Survey Mode, 10 s Data
Hot Plasma Composition Analyzer (HPCA) Moments, Level 2, Survey, 10 s Data. The MMS HPCA instruments measure the energy and composition of magnetospheric plasmas in the energy range from 1 eV to 40 keV. An electrostatic energy analyzer (ESA) that is optically coupled to a carbon-foil based Time-of-Flight (TOF) section comprises each HPCA. The basic HPCA data product is an array of counts for 5 ion species, at 63 energies, for each of 16 elevation anodes. Sixteen basic products, also called azimuths, are acquired every 10 s; half a spacecraft spin period nominally has 16 azimuths. The five ion species are protons (H+), alpha particles (He++), helium ions (He+), singly charged Oxygen (O+), and background counts.
MMS 3 Hot Plasma Composition Analyzer (HPCA) Time of Flight, TOF, Counts, Level 2 (L2), Survey Mode, 0.625 s Data
Hot Plasma Composition Analyzer (HPCA) Time of Flight, TOF, Counts, Level 2, Survey 10 s Data. The MMS HPCA instruments measure the energy and composition of magnetospheric plasmas in the energy range from 1 eV to 40 keV. An electrostatic energy analyzer (ESA) that is optically coupled to a carbon-foil based Time-of-Flight (TOF) section comprises each HPCA. The basic HPCA data product is an array of counts for 5 ion species, at 63 energies, for each of 16 elevation anodes. Sixteen basic products, also called azimuths, are acquired every 10 s; half a spacecraft spin period nominally has 16 azimuths. The five ion species are protons (H+), alpha particles (He++), helium ions (He+), singly charged Oxygen (O+), and background counts.
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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.