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This data set contains 1004 high-resolution 30-second video clips from Barkley Canyon Axis and accompanying species annotations. Barkley Canyon is a submarine canyon located approximately 80 km off the west coast of Vancouver Island, British Columbia, Canada. The canyon axis site is located in roughly the middle of the canyon. The 30 second clips (about 60MB each) are captured 3 times a day for a year (2:00AM, 10:00AM, 6:00PM UTC), with higher frequency sampling every 2 hours for the first week of the collection period. The subsampling period was selected to reduce aliasing from tides. For all videos, the camera was facing northeast with a view of the seafloor at 45° down from horizontal, so that the field of view imaged was approximately 2m^2 of the sediment-covered seabed. Four species of interest were identified in the videos – hagfish (Eptatretus sp.), eelpouts (Lichenchelys sp.), poachers (Agonidae family) and sablefish (Anoplopoma fimbria). Videos were reviewed by a biological expert annotator who recorded what species were present and when individuals entered and exited the field of view for each video. The dataset was originally curated to support the development of computer vision algorithms capable of identifying the four species of interest.
CTD profile in IODP CORK U1364A borehole at ONC NEPTUNE observatory site Clayoquot Slope, Cascadia Accretionary Prism
Ocean Networks Canada (ONC) operates and maintains innovative cabled observatories that supply continuous power and Internet connectivity to various scientific instruments located in coastal, deep-ocean, and Arctic environments. The Clayoquot Slope IODP (Integrated Ocean Discovery Program) borehole observatory CORK U1364A is located in the Vancouver Margin of the northern Cascadia Subduction Zone, ~20km landward of the accretionary prism toe. Here, sediments scraped from the subducting Juan de Fuca plate are deposited and the accreted sedimentary section is ~5 km thick with gas hydrate formation in the upper hundred meters of sediment. The CORK (Circulation Obviation Retrofit Kit) observatory was installed in 2010 during IODP Expedition 328 (Davis & Malone, 2010; Davis & Heesemann, 2011). This location was chosen to observe the fluid flow, mechanical and formation properties of the accretionary prism, allowing for long-term monitoring of deformation, seismic activity, and gas hydrate accumulation. In May 2014 a temperature profile was measured by lowering a CTD (Conductivity-Temperature-Depth) down IODP borehole observatory CORK U1364A. The CTD profile was obtained during Ocean Networks Canada NEPTUNE Maintenance Cruise 2014-05 using the remotely operated vehicle (ROV) CSSF-ROPOS from the CCGS John P. Tully. Dive log entries are available from Dive R1694 and a video recording of the experiment is accessible through SeaTube, ONC’s video player (https://data.oceannetworks.ca/SeaTube?resourceTypeId=1000&resourceId=1001&diveId=410&time=2014-05-24T15:43:08.000Z). CTD data was collected using the factory calibration settings and downloaded from the instrument using the CTD manufacturers software. The initial purpose of this experiment was to determine the open depth of the borehole. The data of the hydrological observatory have been used in multiple subsequent studies to investigate pressure and temperature changes of the subseafloor (Becker et al. 2020, Mcguire et al. 2018). Boreholes drilled within the accretionary prism help to better understand the relationship between dynamic processes such as tectonic motion and deformation, internal plate strain, and earthquakes, as well as gas hydrate formation and accumulation.
Prepared by Research Community
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Sponges perceive and respond to a range of stimuli. How they do this is still difficult to pin down despite now having transcriptomes and genomes of an array of species. Here we evaluate the current understanding of sponge behaviour and present new observations on sponge activity in situ. We also explore biosynthesis pathways available to sponges from data in genomes/transcriptomes of sponges and other non-bilaterians with a focus on exploring the role of chemical signalling pathways mediating sponge behaviour and how such chemical signal pathways may have evolved. Sponge larvae respond to light but opsins are not used, nor is there a common photoreceptor molecule or mechanism used across sponge groups. Other cues are gravity and chemicals. In situ recordings of behaviour show that both shallow and deep-water sponges move a lot over minutes and hours, and correlation of behaviour with temperature, pressure, oxygen and water movement suggests that at least one sponge responds to changes in atmospheric pressure. The sensors for these cues as far as we know are individual cells and, except in the case of electrical signalling in Hexactinellida, these most likely act as independent effectors, generating a whole-body reaction by the global reach of the stimulus to all parts of the animal. We found no evidence for use of conventional neurotransmitters such as serotonin and dopamine. Intriguingly, some chemicals synthesized by symbiont microbes could mean other more complex signalling occurs, but how that interplay might happen is not understood. Our review suggests chemical signalling pathways found in sponges do not reflect loss of a more complex set.
CTD profile in IODP CORK U1364A borehole at ONC NEPTUNE observatory site Clayoquot Slope, Cascadia Accretionary Prism
CTD (Conductivity-Temperature-Depth) profile measured during an experiment to determine the open depth of IODP borehole observatory CORK U1364A. The CTD profile was obtained during Ocean Networks Canada NEPTUNE Maintenance Cruise 2014-05 using the remotely operated vehicle (ROV) CSSF-ROPOS from the CCGS John P. Tully. Video and dive log entries of the experiment were recorded during Dive R1694 and are accessible at https://data.oceannetworks.ca/SeaTube?resourceTypeId=1000&resourceId=1001&diveId=410&time=2014-05-24T15:43:08.000Z. This data set contains all raw, metadata, and calibrated data files that were retrieved and generated from the CTD after the experiment