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738 results for “estuaries”
Fig. 5 in A New Species of Semicytherura (Crustacea: Ostracoda: Cytheroidea) from Obitsu River Estuary (Central Japan) and Its Microhabitat
Fig. 5. Semicytherura obitsuensis sp. nov., appendages. A, maxillule; B, fifth limb; C, sixth limb; D, seventh limb; E, male copulatory organ. A–E, holotype, SUM-CO-2461.
Fig. 4 in A New Species of Semicytherura (Crustacea: Ostracoda: Cytheroidea) from Obitsu River Estuary (Central Japan) and Its Microhabitat
Fig. 4. Semicytherura obitsuensis sp. nov., valves and appendages. A, internal view of male right valve; B, internal view of female right valve; C, antennule; D, antenna of male; E, antenna of female; F, mandibule. A, C, D, F, holotype, SUM-CO-2461; B, paratype, SUM-CO-2471; E, paratype, SUM-CO-2473.
Fig. 7 in Two New Species of Composetia (Annelida: Nereididae) from Small Estuaries in the Ryukyu Islands, Southern Japan, with a List of All Species Currently Belonging to Composetia
Fig. 7. Composetia tokashikiensis sp. nov. A–C, paratype (NSMT-Pol P-775): A, dorsal views of prostomium and peristomium; B, dorsal view of the everted proboscis; C, ventral view of the everted proboscis. D–G, holotype (NSMT-Pol H-774): D, posterior view of right parapodium 1; E, posterior view of right parapodium 5; F, anterior view of right parapodium 5; G, posterior view of right parapodium 32. H, posterior view of right parapodium 51 of the paratype (NSMT-Pol P-775). Arrow indicates a notoacicular process. Abbreviations: g, glandular patch; i, neuropodial inferior lobe; ne, neuroacicula; no, notoacicula; p, neuropodial postchaetal lobe. Scale bars: 1 mm (A–C); 0.1 mm (D–H).
Fig. 4 in Two New Species of Composetia (Annelida: Nereididae) from Small Estuaries in the Ryukyu Islands, Southern Japan, with a List of All Species Currently Belonging to Composetia
Fig. 4. Schematic diagrams of chaetal arrangement in distal view of right parapodium around chaetiger 5. A, Composetia kumensis sp. nov. B, C. tokashikiensis sp. nov. Closed circles: homogomph spinigers. Closed squares: heterogomph spinigers. Closed stars: heterogomph falcigers. Asterisks indicate that few heterogomph falcigers are sometimes present. Abbreviations: dc, dorsal cirrus; i, neuropodial inferior lobe; ne, neuroacicula; nea, neuropodial acicular ligule; nev, neuropodial ventral ligule; no, notoacicula; nod, notopodial dorsal ligule; np, notoacicular process; nov, notopodial ventral ligule; po, neuropodial postchaetal lobe; vc, ventral cirrus.
Fig. 6 in Two New Species of Composetia (Annelida: Nereididae) from Small Estuaries in the Ryukyu Islands, Southern Japan, with a List of All Species Currently Belonging to Composetia
Fig. 6. Composetia tokashikiensis sp. nov. A, dorsal view of the whole body of the preserved specimen of holotype (NSMT-Pol H-774). Arrow indicates the enlarged oral ring of the everted proboscis. B–D, anterior end of a paratype (NSMT-Pol P-783): B, dorsal view of prostomium, peristomium, and anterior chaetigers; C, dorsal view of the everted proboscis; D, ventral view of the everted proboscis. E, landscape of the type locality at the upper reaches of a small estuary in the Tokashiki-gawa river in Tokashiki-jima island (photographed on 27 May 2012). Scale bars: 1 mm (A); 0.5 mm (B–D).
Fig. 1 in Two New Species of Composetia (Annelida: Nereididae) from Small Estuaries in the Ryukyu Islands, Southern Japan, with a List of All Species Currently Belonging to Composetia
Fig. 1. Composetia kumensis sp. nov. A, dorsal view of the whole body of the preserved specimen of holotype (NSMT-Pol H-766). Arrow indicates the enlarged oral ring of the everted proboscis. B, C, paratype (NSMT-Pol P-772): B, dorsal view of the anterior body of a live specimen; C, dorsal view of anterior end of the preserved specimen. D, Jaw of paratype (NSMT-Pol P-773). Scale bars: 1 mm (A, B); 0.5 mm (C); 0.1 mm (D).
Fig. 3 in A New Species of Semicytherura (Crustacea: Ostracoda: Cytheroidea) from Obitsu River Estuary (Central Japan) and Its Microhabitat
Fig. 3. Semicytherura obitsuensis sp. nov. A, male carapace in anterior view; B, male carapace in posterior view; C, female carapace in anterior view; D, female carapace in posterior view; E, adductor muscle scar of male right valve (arrow indicating anterior); F, adductor muscle scar of female right valve (arrow indicating anterior); G, hingement of male right valve; H, hingement of male left valve; I, hingement of female right valve; J, hingement of female left valve. A, B, paratype, SUM-CO-2463; C, D, paratype, SUM-CO-2472; E, G, H, paratype, SUM- CO-2462; F, I, J, paratype, SUM-CO-2471. Arrowheads indicate mandibular scars.
Plant community compositional stability over 40 years in a Fraser River Estuary tidal freshwater marsh
<p class="MsoNormal"><span>Long-term data sets documenting temporal changes in vegetation communities are uncommon, yet imperative for understanding trends and triggering potential conservation management interventions. For example, decreasing species diversity and increasing non-native species abundance may be indicative of decreasing community stability. We explored long-term plant community change over a 40-year period through the contribution of data collected in 2019 to two historical datasets collected in 1979 and 1999 to evaluate decadal changes in plant community biodiversity in a tidal freshwater marsh in the Fraser River Estuary in British Columbia, Canada. We found that plant assemblages were characterized by similar indicator species, but most other indicator species changed, and that overall </span><span>α-diversity</span><span> decreased while </span><span>β</span><span>-diversity increased. Further, we found evidence for plant assemblage homogenization through the increased abundance of invasive species such as yellow flag iris (<em>Iris pseudacorus</em>), and reed canary grass (<em>Phalaris arundinacea</em>). These observations may inform concepts of habitat stability in the absence of direct anthropogenic disturbance and corroborate globally observed trends of native species loss and non-native species encroachment. Our results indicate that within the Fraser River Estuary, active threat management may be necessary in areas of conservation concern in order to prevent further native species biodiversity loss. </span></p>
SWAT river water, TN & TP loads to Limfjorden under climate change scenarios (Delta change) + baseline SWAT loads 2009-2018. Paper ". Impacts of climate change on water quality, benthic mussels and suspended mussel culture in a shallow, eutrophic estuary by Maar et al. Heliyon,
<p>SWAT river water, TN & TP loads to Limfjorden under climate change scenarios (Delta change) + baseline SWAT loads 2009-2018 </p>
Empirical data on growth and residency of juvenile Pacific salmon in North America estuaries
<p>Dataset compiling empirical data on estuarine growth and residency of Pacific salmon in North America. We conducted a systematic literature review to create this database, starting with a literature search in <i>Web of Science Core Collection</i> through Simon Fraser University's library proxy on April 24th, 2018, using the search parameters (salmon, Oncorhynchus) AND (estuary*) AND (residen* OR growth OR survival OR mortality), which returned 681 results (these results were presented in Arbeider 2018). We updated the search on March 29th, 2020, which produced 24 additional papers published after April 2018, and again on July 7th, 2022 which yielded another 31 papers published since March 2020. From these results, we extracted papers that research Pacific salmonids and whose study estuary was in North America. From this reduced list of papers, we extracted growth and residency parameters, as well as other relevant data. For complete methods please refer to:</p><p>Arbeider, M. et al. (In press). The estuarine growth and residency of juvenile Pacific salmon in North America: a compilation of empirical data. <i>Canadian Journal of Fisheries and Aquatic Sciences.</i></p>
Biological and physical controls on multidecadal acidification in a eutrophic estuary
<p>Estuaries support many ecologically and economically important resources that are especially vulnerable to ocean acidification from rising anthropogenic CO<sub>2</sub>. However, complex local processes in estuaries complicate and may disguise long-term pH trends. For example, terrestrial nutrient runoff and marine coastal upwelling may exacerbate pH variability and declines. We investigated eutrophication impacts on acidification in a central California estuary, Elkhorn Slough, which receives high nutrient loads from intensive surrounding agriculture and upwelling of the California Current System. We examined drivers of acidification including nutrients, ecosystem metabolism, and upwelling by modelling pH trends over 20 years using a Generalized Additive Mixed Model at four sites from the National Estuarine Research Reserve Systemwide Monitoring Program and collected additional water samples to calculate aragonite saturation. Our models revealed acidification trends over two decades which were more pronounced near the marine inlet. Near the marine inlet, high nutrient levels and lower buffering are associated with the greatest rate of acidification in the estuary, which was four times greater than the trend from anthropogenic CO<sub>2</sub> alone. However, tidally restricted areas experienced a different acidification pattern. A tidally restricted site recorded higher mean pH and aragonite saturation and increased pH levels associated with stronger upwelling conditions supplying marine-sourced nutrients. Therefore, variable ecosystem metabolism and tidal cycles are threats to acidity in this location. The effects of enhanced seasonal cycles or long-term trends in different zones of the estuary have implications for monitoring with a temporal frequency and scale to capture coastal acidification risks in estuaries.</p>
Supporting Data for Figures in "Localized, tidal energy extraction in Puget Sound can adjust estuary resonance and friction, modifying barotropic tides system-wide"
<p>Supporting data for figures in "Localized, tidal energy extraction in Puget Sound can adjust estuary resonance and friction, modifying barotropic tides system-wide" by Preston S. Spicer, Parker MacCready, and Zhaoqing Yang. The manuscript is being considered for publication in Journal of Geophysical Research: Oceans (2024). The article analyzes the effect of a tidal turbine farm on incident and reflected tidal energy fluxes in the Salish Sea. Files are in MATLAB data and .m format with some .txt and shape files. Files named figX.m create the corresponding Figure X using provided .mat and other files. Variable names and units correspond to graphed data of each figure in the journal article.</p>
Fig. 2 in Salinity tolerance of the bivalve Solen cylindraceus (Hanley, 1843) (Mollusca: Euheterodonta: Solenidae) in the St Lucia Estuary
Fig. 2. Changes in salinity (ppt) recorded in False Bay and the South and North lakes of the St Lucia Estuary during the period 1960–2010.
Fig. 4 in Salinity tolerance of the bivalve Solen cylindraceus (Hanley, 1843) (Mollusca: Euheterodonta: Solenidae) in the St Lucia Estuary
Fig. 4. Percent survival of Solen cylindraceus for varying salinities between 0 and 80 ‰ over time (hrs), after acclimation to varying salinities (gradual change test).
Fig. 3 in Salinity tolerance of the bivalve Solen cylindraceus (Hanley, 1843) (Mollusca: Euheterodonta: Solenidae) in the St Lucia Estuary
Fig. 3. Percent survival of Solen cylindraceus exposed to varying salinities between 0 and 80 ‰ over time (hrs), after being acclimated to 50 ‰ (shock change test).
Fig. 1 in Salinity tolerance of the bivalve Solen cylindraceus (Hanley, 1843) (Mollusca: Euheterodonta: Solenidae) in the St Lucia Estuary
Fig. 1. Geographic position of the St Lucia Estuary showing the sampling site, Catalina Bay, and the abundance transect occupied in June 2010 (adapted from Carrasco et al. 2010).
Data from: European green crab predation in a Washington State estuary revealed with DNA metabarcoding
<p><strong>Fisher, MC, Grason, EW, Stote, A, Kelly, RP, Litle, K, & PS McDonald. (in review). <em>Invasive European green crab (</em>Carcinus maenas<em>) predation in a Washington State estuary revealed with DNA metabarcoding. </em></strong></p> <p>Sequencing data files produced for Fisher et al. (in review) on an Illumina MiSeq (2x300bp) targeting a 418bp DNA sequence in the mitochondrial cytochrome C oxidase subunit I gene (cox1 or COI) Folmer region. Data are demultiplexed but otherwise un-processed. Sample data sheets used to load each sequencing run are included as excel spreadsheets in the appropriate zipped folder. The metadata file contains sample (green crab stomach / mock community) metadata and corresponding MiSeq run number(s). </p> <p>Associated lab protocols are available on Github (<a href="https://github.com/mfisher5/Green-crab-dDNA/tree/main/doc" target="_blank" rel="noopener">Green-Crab-dDNA</a>)</p> <p>---</p> <p>Abstract: Predation by invasive species can threaten local ecosystems and economies. The European green crab (<em>Carcinus maenas</em>), one of the most widespread marine invasive species, is an effective predator associated with clam and crab population declines outside of its native range. In the U.S. Pacific Northwest, green crab has recently increased in abundance and expanded its distribution, generating concern for estuarine ecosystems and associated aquaculture production. However, regionally-specific information on the trophic impacts of invasive green crab is very limited. We compared the stomach contents of green crabs collected on shellfish aquaculture beds versus natural intertidal sloughs in Willapa Bay, Washington, to provide the first in-depth description of European green crab diet at a particularly crucial time for regional management. We first identified putative prey items using DNA metabarcoding of stomach content samples. We compared diet composition across sites using prey presence/absence and an index of species-specific relative abundance. For eight prey species, we also calibrated metabarcoding data to quantitatively compare DNA abundance between prey items, and to describe an ‘average’ green crab diet at an intertidal slough and an actively cultivated Manila clam bed. From the stomach contents of 61 green crabs, we identified 54 unique taxa belonging to nine phyla. The stomach contents of crabs collected from cultivated Manila clam beds were significantly different from the stomach contents of crabs collected at natural intertidal sloughs. Across all sites, arthropods were the most frequently detected prey, with the native hairy shore crab (<em>Hemigrapsus oregonensis</em>) the single most common prey item. Of the eight species included in the quantitative model, two ecologically-important native species – the sand shrimp (<em>Crangon franciscorum</em>) and the Pacific staghorn sculpin (<em>Leptocottus armatus</em>) – were the most abundant in crab stomach contents, when present. In addition to providing timely information on green crab diet, our research demonstrates the novel application of a recently developed model for more quantitative DNA metabarcoding. This represents another step in the ongoing evolution of DNA-based diet analysis towards producing the quantitative data necessary for modeling invasive species impacts.</p>
Data from: Unexpected stability in faunal population abundances following an estuary-wide collapse of oysters
<p>Data describing the number and lengths of fish and macroinvertebrates sampled from long-term fisheries independent sampling in Florida’s coastal waters. Original data were collected by the Florida Fish and Wildlife Conservation Commission (FWC) Fish and Wildlife Research Institute (FWRI).</p>
Daily modelled salinity values in the estuary of the river Ulla (Galicia, Spain) from 1961 to 2023
<p>The dataset includes the estimated daily salinity in the Ulla river estuary (Galicia, Spain) from 7 January 1961 to 31 December 2023. The values included in the data series are the results of an ocean-meteorological model that considers the runoff from the Ulla river basin, tidal amplitude, and wind direction and strength. A figure showing the area of interest is included.</p>
Episodes of critical salinity values in the estuary of the river Ulla (Galicia, Spain) in the hydrological years 1961 to 2022
<p>The dataset includes the number of critical salinity episodes, as a function of salinity thresholds and their duration, that could have caused mortality events of different intensity of bivalves of commercial interest in the Ulla river estuary (Galicia, Spain) for hydrological years 1962 to 2022. </p> <p>A hydrological year is defined as the one starting in October and ending in September of the following year. The series includes four of the possible critical episodes defined by Parada <em>et al., </em>2012 (DOI: 10.1007/s12237-011-9426-2): Salinity (S) below 10 for 1 day (S10-1d); S<30 for 18 consecutive days (S30-18d); S<5 for 1 day or more (S5-1d) and S<30 for 19 consecutive days or more (S30-19d). The first two types of events can cause moderate mortalities of commercial bivalve molluscs and the second severe mortalities (Parada <em>et al., </em>2012; DOI: 10.1007/s12237-011-9426-2). Moderate mortalities are defined as events where mortalities of less than 50% of the cockle (<em>Cerastodema edule</em>, L. 1758) and up to 15% of the clams <em>Ruditapes decussatus</em> (L., 1758) and <em>R. philippinarum</em> (A. Adams & Reeve, 1850) are recorded in the estuary. Severe mortalities are defined as events in which mortalities of 50% or more of the population of <em>C. edule</em> and the clam <em>Venerupis corrugata</em> (Gmelin, 1791), and 15% or more of <em>R. decussatus</em> and <em>R. phillipinarum</em> are recorded (Parada <em>et al., </em>2012; DOI: 10.1007/s12237-011-9426-2). The file is composed of 5 columns: the first column contains the hydrological year and the following columns contain the number of episodes recorded for each of the four categories (S10-1d, S30-18d, S5-1d and S30-19d).</p>
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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.