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583 results for “Burrowing”
Long-term Burrowing Crab Population Abundance Data from the Georgia Coastal Ecosystems LTER Fall Marsh Monitoring Program
This data set includes long-term observational data on burrowing crab abundance at 10 Georgia Coastal Ecosystems marsh sites used for annual plant and invertebrate population monitoring. Crab abundance was determined by performing surveys of crab hole occurance within replicate 625 square centimeter quadrats and converting the counts to number per square meter. Surveys were performed annually during October within the mid-marsh and creek bank zones at GCE marsh study sites 1 through 10 (i.e. n = 4 per zone at each site). Surveys were also performed in an additional high marsh Juncus zone at several sites beginning in 2009 (i.e. n = 4 quadrats per site). Note that this census method does not differentiate which species made a particular hole and therefore only estimates total burrowing crab abundance, potentially including species Uca pugnax, Uca minax, Uca pugilator, Armases cinereum, Eurytium limosum, Sesarma reticulatum and Panopeus spp. Crab holes that are not actively maintained are quickly covered by tidal activity and other sediment disturbances, therefore plugged holes were assumed to be unoccupied and excluded from the counts. This data set includes cumulative observations from 2000 to 2023, and will be updated annually to include the prior year observations.
Atlantic ghost crab (Ocypode quadrata) burrow counts at shorebird nests and randomly available sites on Metompkin Island, Virginia, 2022
Atlantic ghost crabs (Ocypode quadrata) are predators of beach-nesting shorebirds, their nests, and their chicks on the United States' Atlantic and Gulf coasts. Ghost crabs may also disturb birds, altering their foraging, habitat use, or nest and brood attendance patterns. Shorebird conservation strategies often involve predator and disturbance management to improve reproductive success, but efforts rarely target ghost crabs. Despite the threat to shorebird reproductive success, ghost crabs are a poorly understood part of the beach ecosystem and additional knowledge about ghost crab habitat selection is needed to inform shorebird conservation. We monitored ghost crab activity, defined as burrow abundance, throughout the shorebird breeding season on Metompkin Island, Virginia, an important breeding site for piping plovers (Charadrius melodus) and American oystercatchers (Haematopus palliatus). We counted burrows at shorebird nests and random points throughout the shorebird breeding season and tested whether ghost crab activity was greater at shorebird nest sites than random sites. We observed burrows at all nest sites in our study area (n = 63 nests), but found fewer burrows at nest sites than random sites. Ghost crabs may avoid shorebird nest sites due to aggressive defensive behaviors from incubating adults or differences in microhabitat characteristics selected by shorebirds versus ghost crabs. We also tested the effects of date, air temperature, habitat type, and shell cover on the abundance of ghost crab burrows. We found that while burrows were present across the barrier island landscape, there were more burrows in sandy habitats with sparse to little shell cover and in and behind the dunes relative to the beach and beach-front berm. Ghost crab activity increased later in the shorebird breeding season and as air temperature increased. Understanding when and where ghost crabs are most likely to be active in the landscape can aid decision-making to benefit imperi
Crab Burrows, Soil Nutrients, and Spartina alterniflora : organic content in Brownsville, VA 1992
The effect of Crab Burrows on Soil Nutrients and Spartina alterniflora by Winli Lin This study investigated the effects of fiddler crab (Uca pugnax) burrows on soil nutrients and the marsh grass Spartina alterniflora. Tall-form Spartina alterniflora (1-2m tall) typically dominates the marsh area that is flooded daily by tides. The short-form S. alterniflora(<0.5m tall) generally occupies the higher tidal heights (Bertness 1985). These short-form S. alterniflora are charterized by reduced soil drainage (Mendelssohn and Senecs 1980; Howes et al. 1981; Mendelssohn et al. 1981) and increased soil sulfide levels (King et al. 1982). From comparing control areas devoid of burrrows to those with burrows added, an increase in above-ground Spartina alterniflora production has been observed along with an increase of soil drainage rates and redox potential levels (Bertness 1985). Others have looked at how nutrient availability (Mendelssohn 1979) and sulfide accumulation (King et al. 1982; Howarth and Giblin 1983) may be the primary limiting factors controlling the production and success of S. alterniflora. While soil water movement has been shown to influence the soil parameters, (i.e., sulfide concentration and redox potential) that directly affect cordgrass production (King et al. 1982; Koch et al. 1990), little has been studied on how biotic modifications, such as crab burrows, mediate these physical factors. The Uca pugnax, are burrowing deposit-feeders that excavate and maintain semi-permanent burrows in the marsh surface. They have been found to not only oxygenate marsh soils (Howes et al 1981) and modify sediment meiofaunal abundance, they could also provide a suitable environment for continued burrowing and, as a byproduct, increase the marsh grass production and maintain the tall-form S. alterniflora. Uca pugnax, the mud fiddler crab, is the dominant form of crab seen in Brownsville, VA. Their burrows are primarily restricted to areas of tall-form S. alterniflora, due
Nephrops (Nephrops norvegicus) Burrow object detection simple training dataset from Irish Underwater TV surveys
<div> <div> <div> <div> <h1>Training dataset</h1> <p>Norway prawns (<em>Nephrops norvegicus</em>), also known as the Dublin Bay prawn, are common around the Irish coast. They are found in distinct sandy/muddy areas where the sediment is suitable for them to construct their burrows. <em>Nephrops </em>spend a great deal of time in their burrows and their emergence from these is related to time of year, light intensity and tidal strength. The Irish <em>Nephrops </em>fishery is extremely valuable with landings recently worth around €55m at first sale, supporting an important Irish fishing industry. </p> <p><em>Nephrops</em> are managed in Functional Units (FUs). The Marine Institute has conducted under water television surveys since 2002 to independently estimate abundance, distribution and stock sizes of <em>Nephrops</em> <em>norvegicus </em>for:</p> <ul> <li>Irish Sea <em>Nephrops</em> Grounds (FU 14 and 15) in collaboration with <a title="Link to 'Fisheries and Aquatic Ecosystems' work in AFBI Northern Ireland" href="https://www.afbini.gov.uk/area-of-expertise/fisheries-and-aquatic-ecosystems">AFBI</a> an <a title="Link to Cefas (the Centre for Environment, Fisheries, and Aquaculture Science) in the UK" href="https://www.cefas.co.uk/">CEFAS</a>.</li> <li>Porcupine Bank <em>Nephrops</em> Grounds (FU16)</li> <li>Aran, Galway Bay and Slyne Head <em>Nephrops</em> Grounds (FU17)</li> <li>South and South west Ireland <em>Nephrops</em> Grounds (FU19)</li> <li>Labadie, Jones and Cockburn <em>Nephrops</em> Grounds (FU20 and 21)</li> <li>“Smalls” <em>Nephrops</em> Grounds (FU22)</li> </ul> <p>Each year during the summer months, on average 300 stations are surveyed each year, in three survey legs, covering all the FUs in depths from 20 to 650 metres.</p> <p>A high definition camera system is towed over the sea bed for 10 minutes travelling approx. 200m at 0.8 knots on a purpose built sledge. The UWTV survey follows survey protocols available <a title="Link to survey protocols" href="https://doi.org/10.17895/ices.pub.8014">here</a> agreed by International Council for the Exploration of the Sea (ICES) Working Group on <em>Nephrops </em>surveys (WGNEPS). </p> <p>As part of the iMagine project a selection of images from the Underwater TV survey Functional Units were annotated with bounding boxes and labels in YOLOv8 format to train an YOLOv8 Object Detection Models. The training dataset is saved in YOLOv8 format. It is intended to train a YOLOv8 Nephrrops burrow object detection model to assess the utility of an Object Detection model is assisting Prawn Survey work in the semi automated annotation of prawn burrow imagery.</p> </div> </div> </div> </div>
A survey of Hogna carolinensis burrows on Nantucket Island, MA
<p>This dataset contains the locations of <em>Hogna carolinensis</em> burrows in the Quaker Cemetery on Nantucket Island, MA. This population is probably near where James Emerton collected specimens in 1928/1929. (<a href="https://www.mariamitchell.org/wp-content/uploads/Publication_Johnson1930_Insects.pdf">https://www.mariamitchell.org/wp-content/uploads/Publication_Johnson1930_Insects.pdf</a>).<br> Students from Matt Liddle's Nantucket New School 8th grade class measured and recorded these data under the guidance of Andrew Mckenna-Foster on 22 April and 13 May 2016.<br> To calculate georeferenced locations for each burrow, we chose a convenient base point that is 38 meters at 280 degrees from the hydrant at the SE corner of the Quaker Cemetery. Using QGIS and data from MassGIS (<a href="http://www.mass.gov/orgs/massgis-bureau-of-geographic-information">https://www.mass.gov/orgs/massgis-bureau-of-geographic-information</a>), we found the UTM coordinates of the hydrant and calculated the coordinates of the base point: 407230.04E 4570493.1N UTM 19N NAD83.<br> For each burrow we collected a bearing and distance from base point to calculate a UTM coordinate. We also measured the turret height, full turret width, and interior turret width.<br> These data do not represent all the burrows in the area but cover the main population center.<br> We hope that this dataset acts as a reference point for follow up surveys.</p>
Fiddler crab impacts from observational study 2020-21: Aboveground & diatom biomass, plant height, percent N, burrow & mussel density, belowground biomass, and organic matter
The fiddler crab, Minuca pugnax, expanded its range into the Gulf of Maine recently and was first observed in the Plum Island Estuary in 2014. In 2020 and 2021, we investigated the impact of this burrowing crab on benthic microalgal biomass, sediment properties and the above- and belowground biomass of the cordgrass, Spartina alterniflora. To accomplish this, we conducted a control-impact study in plots with and without fiddler crabs in three marshes in the PIE-LTER: Sawyer, Clubhead, and Metcalf. In its historical range (i.e., south of Cape Cod), M. pugnax, enhances Spartina aboveground biomass. In contrast, we found that, on average, when fiddler crabs were present, aboveground biomass was 40% lower in the PIE-LTER. We also found that belowground biomass was 30% lower and benthic microalgal biomass was 45% lower when fiddler crabs were present, which is in line with our expectations. Because fiddler crabs reduced the biomass of foundational primary producers in its expanded range, our results imply that M. pugnax can influence other saltmarsh functions such as carbon storage and accretion as they expand north. More broadly, our results suggest that as species expand or shift their range with climate change, not only can they have profound impacts in their new ranges, but that those impacts can be the inverse of what is seen in their historical ranges.
Flow dynamics and pump kinematics in polychaete burrows constructed in a transparent mud analog
We used Particle Tracking Velocimetry (PTV) to measure fluid flow within burrows constructed by the polychaete Alitta succinea in a transparent mud analog. We also measured the kinematics of the undulatory pumping by the polychaete that drives flow through the burrow. The flow velocity data is presented in the spreadsheet worm_burrow_particle_tracking_data.csv and consists of the x and y coordinates (in mm) of each tracked particle, the time at which it was tracked (in seconds) and the velocity of the particle at that time (in mm per second). The ClipID is the reference of the video clip the data is from, and is a unique identifier. The SequenceID is retained between the pump dynamics data and the particle tracking data, because worm kinematics and flow dynamics were recorded simultaneously. Each tracked particle in a given sequence has a unique TrackID. The worm kinematics data consists of the track of the peak of the undulatory wave created as an individual polychaete ventilates its burrow and is presented in the spreadsheet worm_burrow_pump_dynamics_data.csv. The variables included are the x and y coordinates of the wave peak (in mm), the time at which the point was taken (in seconds) and the instantaneous velocity of the wave peak at that time (in mm per second). The ClipID is the reference of the video clip the data is from, and is a unique identifier. The SequenceID is retained between the pump dynamics data and the particle tracking data, because worm kinematics and flow dynamics were recorded simultaneously. Each tracked wave in a given sequence has a unique TrackID. The metadata, in the spreadsheet worm_burrow_metadata.csv, gives the polychaete Individual ID (a unique identifier for each specimen used) for each Clip ID and Sequence ID from the data spreadsheets, the location in the burrow at which the video was taken (between the head of the worm and the burrow entrance is "ahead", between the tail of the worm and the burrow exit is "behind", and a video of
Fig. 1 in A new species of the genus Liljeborgia Spence Bate, 1862 (Crustacea: Amphipoda: Liljeborgiidae) associated with the burrows of the spoon worm Urechis unicinctus in the Sea of Japan
Fig. 1. Habitus of live female specimen of Liljeborgia associata sp. nov. from Vostok Bay of the Sea of Japan with geographical indication of the collection sites in the Peter the Great Bay and Posjeta Bay of the Sea of Japan.
Fig. 4 in A new species of the genus Liljeborgia Spence Bate, 1862 (Crustacea: Amphipoda: Liljeborgiidae) associated with the burrows of the spoon worm Urechis unicinctus in the Sea of Japan
Fig. 4. Liljeborgia associata sp. nov., female (LEMMI) from Vostok Bay of the Sea of Japan. a. Pereopod 3. b. Pereopod 4. c. Pereopod 5. d. Distal segments of P5. e. Pereopod 6. f. Distal segments of P6. g. Pereopod 7.
Fig. 3 in A new species of the genus Liljeborgia Spence Bate, 1862 (Crustacea: Amphipoda: Liljeborgiidae) associated with the burrows of the spoon worm Urechis unicinctus in the Sea of Japan
Fig. 3. Liljeborgia associata sp. nov., female (LEMMI) from Vostok Bay of the Sea of Japan. a. Gnathopod 1. b. Chela of Gn1. c. Gnathopod 2. d. Chela of Gn2.
Figures 9–10 in Studies on palearctic Onthophagus associated with burrows of small mammals. IV. A new Iranian species belonging to the furciceps group (Coleoptera, Scarabaeidae, Onthophagini)
Figures 9–10. Onthophagus (Paleonthophagus) psychopompus sp. n. Male, paratype (Iran, Sirdan, Qazvin prov.) and female, paratype (Iran, Saqqez, Kordestan prov.). 9 Dorsum of male 10 Dorsum of female. Photos by A. Ballerio, scanned by G. Fiumi.
Figures 1–7 in Studies on palearctic Onthophagus associated with burrows of small mammals. IV. A new Iranian species belonging to the furciceps group (Coleoptera, Scarabaeidae, Onthophagini)
Figures 1–7. Onthophagus (Paleonthophagus) psychopompus sp. n. Male, holotype, and female, allotype (Iran, Hashtgerd, Tehran prov.). 1 Male: head and pronotum, dorsal view 2 Male: head, frontal view 3 Female: head and pronotum, dorsal view 4 Female: head, frontal view 5 Parameres, lateral view 6 Parameres, dorsal view 7 Lamella copulatrix, ventral side. Drawings by I. Gudenzi.
FIG. 10 in Two new deep-sea species of burrowing anemones (Cnidaria: Actiniaria: Edwardsiidae) from Whittard Canyon off the southwestern coast of Ireland
FIG. 10. Phylogenetic reconstruction from maximum likelihood analysis using focused dataset of 18S sequences for members of Suborder Anenthemonae. Colored lines represent actiniarian suborders; dashed boxes represent Anenthemonae superfamilies. Bootstrap resampling values indicated above branches; only support values>50% are shown.
Figs 1–4. 1 in Contribution to the knowledge of beetles (Coleoptera) inhabiting rodent burrows in Turkmenistan
Figs 1–4. 1 – Aleochara jacobsoni, 2 – Orodaliscus transaralicus, 3 – Thinorycter chlamydatus, 4 – Asiocaedius kiseritzkii. Scale bar – 1 mm.
Fig. 2 in A New Species of the Sand-burrowing Dogielinotidae, Haustorioides furotai, from Tokyo Bay, Japan (Crustacea: Amphipoda)
Fig. 2. Haustorioides furotai Ogawa, sp. nov., photographs of live animals. A, Paratype female (NSMT-Cr 28351), 7.2 mm; B, holotype, male (NSMT-Cr 28350), 7.2 mm. Scale bar: 1 mm.
Fig. 1. Map showing a in A New Species of the Sand-burrowing Dogielinotidae, Haustorioides furotai, from Tokyo Bay, Japan (Crustacea: Amphipoda)
Fig. 1. Map showing a collecting site, Banzu tidal flat, Kisarazu City, Chiba Prefecture, Japan (filled circle).
Fig. 8 in A New Species of the Sand-burrowing Dogielinotidae, Haustorioides furotai, from Tokyo Bay, Japan (Crustacea: Amphipoda)
Fig. 8. Haustorioides furotai Ogawa, sp. nov., paratype, female (NSMT-Cr 28351), 9.0 mm. A, Left pereopod 4; B, left pereopod 5.
Fig. 4 in A New Species of the Sand-burrowing Dogielinotidae, Haustorioides furotai, from Tokyo Bay, Japan (Crustacea: Amphipoda)
Fig. 4. Haustorioides furotai Ogawa, sp. nov., holotype, male (NSMT-Cr 28350), 7.2 mm A, Left gnathopod 1; B, palm of left gnathopod 1; C, left gnathopod 2; D, left pereopod 3; E, left pereopod 4.
Fig. 5 in A New Species of the Sand-burrowing Dogielinotidae, Haustorioides furotai, from Tokyo Bay, Japan (Crustacea: Amphipoda)
Fig. 5. Haustorioides furotai Ogawa, sp. nov., holotype, male (NSMT-Cr 28350), 7.2 mm. A, Left pereopod 5; B, left pereopod 6; C, left pereopod 7.
Fig. 7 in A New Species of the Sand-burrowing Dogielinotidae, Haustorioides furotai, from Tokyo Bay, Japan (Crustacea: Amphipoda)
Fig. 7. Haustorioides furotai Ogawa, sp. nov., paratype, female (NSMT-Cr 28351), 9.0 mm. A, Left gnathopod 2; B, left pereopod 3.
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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.
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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.
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