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99 results for “submersible”
Figure 4 in New carnivorous sponges (Porifera, Poecilosclerida) collected from manned submersibles in the deep Pacific
Figure 4. Chondrocladia lampadiglobus sp. nov. A, holotype (scale bar: 17 mm). B, tylostyle of the cover of the stalk (scale bars: 42 µm and 4.2 µm). C, style of the stalk (scale bar: 30 µm). D, style of the body surface (scale bar: 63 µm). E, anchorate isochelae 1 (scale bar: 14 µm). F, anchorate isochelae 1 (scale bar: 9.6 µm). G, two anchorate isochelae 2 (scale bar: 7 µm). H, sigma (scale bar: 10 µm).
Figure 2 in New carnivorous sponges (Porifera, Poecilosclerida) collected from manned submersibles in the deep Pacific
Figure 2. Cladorhiza segonzaci sp. nov. A, view of the holotype (left), two paratypes and a fragment of a paratype (scale bar: 3 mm). B, style (scale bar: 90 µm). C, developmental stage of anisochela (scale bar: 3.1 µm). D, anisochela (scale bar: 3.7 µm). E, anisochela, back view (scale bar: 3.2 µm). F, sigma (scale bar: 12 µm). G, sigmancistra (scale bar: 5.3 µm). H, sigmancistra (scale bar: 5.3 µm).
Going with the flow? Relative importance of riverine hydrologic connectivity versus tidal influence for spatial structure of genetic diversity and relatedness in a foundational submersed aquatic plant
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Table S1: Records of bramble shark sightings on 16 December, 2023, offshore of Fujairah, UAE, in the Gulf of Oman. Time is provided in Zulu time (GMT), not in local time. Vessels where sightings occurred are labeled as remotely operated vessels (ROV: Chimera) or human-driven submersibles (Sub: Neptune and Nadir).; Video S1: Video footage of a bramble shark (Echinorhinus brucus) encounter with a submersible at 780 m depth offshore from Fujairah, United Arab Emirates.
<p><span>Table S1: Records of bramble shark sightings on 16 December, 2023, offshore of Fujairah, UAE, in the Gulf of Oman. Time is provided in Zulu time (GMT), not in local time. Vessels where sightings occurred are labeled as remotely operated vessels (ROV: Chimera) or human-driven submersibles (Sub: Neptune and Nadir).</span></p> <p><span>Video S1: Video footage of a bramble shark (<em>Echinorhinus brucus</em>) encounter with a submersible at 780 m depth offshore from Fujairah, United Arab Emirates.</span></p>
Figure 16 in New carnivorous sponges (Porifera, Poecilosclerida) collected from manned submersibles in the deep Pacific
Figure 16. Abyssocladia naudur sp. nov. Microphotograph of the skeleton (scale bar: 220 µm).
Effects of disturbance on genetic diversity in the submersed aquatic plant Vallisneria americana
<p>In summer 2011, Tropical storms Lee and Irene caused an estimated 90% decline of the submersed aquatic plant <em>Vallisneria americana</em> Michx. (Hydrocharitaceae) in the Hudson River, of New York (USA). To understand the genetic impact of such large-scale demographic losses, we compared diversity at 10 microsatellite loci in 135 samples collected from 5 sites just before the storms with 239 shoots collected from 9 sites four years after. Although 80% of beds sampled in 2011 lacked <em>V. americana</em> in 2015, we found similar genotypic and genetic diversity and effective population sizes in pre-storm versus post-storm sites. These similarities suggest that despite local extirpations concentrated at the upstream end of the sampling area, <em>V. americana</em> was regionally resistant to genetic losses. Similar geographically based structure among sites in both sampling periods suggested that cryptic local refugia at previously occupied sites facilitated re-expansion after the storms. However, this apparent resistance to disturbance may lead to a false sense of security. Low effective population sizes and high clonality in both time periods suggest that <em>V. americana</em> beds were already small and had high frequency of asexual reproduction before the storms. Dispersal was not sufficient to recolonize more isolated sites that had been extirpated. Chronic low diversity and reliance on asexual reproduction for persistence can be risky when more frequent and intense storms are paired with ongoing anthropogenic stressors. Monitoring genetic diversity along with extent and abundance of <em>V. americana</em> will give a more complete picture of long-term potential for resilience.</p>
Effects of disturbance on genetic diversity in the submersed aquatic plant Vallisneria americana
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FIGURE 10. Claviscopulia facunda. A in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 10. Claviscopulia facunda. A, specimen in situ; B–C, fresh specimens onboard: B, MNRJ 21294; C, MNRJ 21295 (with associated crinoid). Photographs by F. Moraes.
FIGURE 8 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 8. Megascleres of Dactylocalyx pumiceus (SEM). A, normal pentactin; B, asymmetrical hexactin with long, sinuous, filamentous rays; C, normal hexactin; D, heptactin. Insets: actin tips.
FIGURE 14 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 14. Environment and populations of Hexactinellida off the Amazon River mouth, Northern Brazil. A, Hyalonema (Cyliconemaoida) alucia sp. nov. on muddy sand bottom off Pará State, 378 m depth; B, Claviscopulia facunda population on coarse sand to gravel bottom off Pará State, 250 m depth; C, Dactylocalyx pumiceus on rocky outcrop off Pará State, 260 m depth; D–F, Dense sponge community dominated by Dactylocalyx pumiceus on hard carbonate bottom off Maranhão State, at 170 m depth (D) and 180 m depth (E). Photographs by F. Moraes (A–C) and R. Moura (D–E).
FIGURE 7 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 7. Skeleton of Dactylocalyx pumiceus (SEM). A, B, dictyonalia with long, sinuous, filamentous rays of asymmetrical pentactins and hexactins. C, dictyonalia with few pentactins; D, dictyonalia associated with abundant free hexasters; E, fused hexactin; F, club-shaped spined ray of fused hexactin with terminal knob.
FIGURE 3 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 3. Skeleton of Hyalonema (Cyliconemaoida) alucia sp. nov. A, choanosomal skeleton with disorganized diactins and less common hexactins; B, dermal skeleton with the pinular rays of pinular pentactins pointing outwards, and tangential diactins (SEM).
FIGURE 6 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 6. External morphology of Dactylocalyx pumiceus. A–E, living specimens in situ (A, B off Pará State, C–E off Maranhão State). Arrow in D points to a derelict fishing line threatening the sponge; F, fresh specimen onboard; G, detail of outer surface showing openings of tubules; H, fragment of specimen after fixation with long grooves (A, F, G: MNRJ 21299; C, H: MNRJ 21284; B, D, E: not collected). Photographs by F. Moraes (A–B), and R. Moura (C–E).
FIGURE 2 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 2. Hyalonema (Cyliconemaoida) alucia sp. nov., external morphology (holotype). A, specimen in situ; B-D, specimen after fixation: B, whole specimen with associated zoanthids (side view); C, apical cone (side view); D, oscular sieve-plate (top view). In situ photograph by F. Moraes (A).
FIGURE 1. Study area and sampling operation. A in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 1. Study area and sampling operation. A, map of South America and Brazil depicting the study area (rectangle); B, insert depicting the Amazon River mouth region with the two manned submersible diving stations where hexactinellids were sampled: one dive included sites 1–3, off Pará State and the other included site 4, off Maranhão State. Site 1—Claviscopulia facunda, site 2—Dactylocalyx pumiceus (white morphotype), site 3—Hyalonema (Cyliconemaoida) alucia sp. nov., site 4—aggregation of Dactylocalyx pumiceus (cream morphotype); C, MV Alucia launching the manned submersible Deep Rover; D, sampling of Hyalonema (Cyliconemaoida) alucia sp. nov. using the submersible's mechanical arm. C-D, photographs by F. Moraes.
FIGURE 12 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 12. Megascleres of Claviscopulia facunda (SEM). A, pentactins; B, sarules; C, uncinates; D, pileate clavules; E, anchorate clavule.
FIGURE 4 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 4. Spicules of Hyalonema (Cyliconemaoida) alucia sp. nov. A, diactin of the basalia; B, choanosomal diactins; C, central thickening of choanosomal diactins; D, pinular pentactins; E, smooth pentactins; F, smooth hexactin; G, spined microxypentactin; H, spined microxyhexactin. (B–G: SEM; A, H: LM)
FIGURE 5 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 5. Amphidiscs of Hyalonema (Cyliconemaoida) alucia sp. nov. (SEM). A, macramphidiscs; B, mesamphidiscs; C, micramphidiscs.
FIGURE 13 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 13. Microscleres of Claviscopulia facunda (SEM). A, oxyhexactins; B, oxyhexasters; C, discohexasters.
FIGURE 11 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil
FIGURE 11. Skeleton of Claviscopulia facunda. A, transversal section of the body tube wall; B, rays of the merged hexactins (SEM); C, dictyonal skeleton of the base; D, dermal frame; E, atrial frame; F, fused hexactins; G, bouquet of sceptrules; H, anchorate clavule at the spined pentactins form the structure of the dermal frame.
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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)
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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.