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| griddap | Subset | tabledap | Make A Graph | wms | files | Accessible | Title | Summary | FGDC | ISO 19115 | Info | Background Info | RSS | Institution | Dataset ID | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_995312_v1 | https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_995312_v1.graph | https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_995312_v1/ | public | [SALT larval geochemical fingerprints] - Shell trace elemental data (geochemical fingerprints) from larval samples collected during cruises AT42-24, AT50-04, and TN391 in the Gulf of Mexico and Northwestern Atlantic in 2020, 2021, and 2022 (Collaborative Research: dispersal depth and the transport of deep-sea, methane-seep larvae around a biogeographic barrier) | Larval dispersal drives metapopulation connectivity, a key metric of population resilience to disturbance. Deep-sea larval disperal remains poorly understood due to the limited applicability of nearshore approaches such as larval rearing in-situ. Here, we used laser ablation spectrometry (Jackson School of Geosciences at the University of Texas at Austin) and multivariate statistical analyses (i.e., PERMANOVA and CAP) to quantify larval shell trace elemental fingerprints for deep-sea methane seep mussels Gigantidas childressi and Bathymodiolus heckerae to infer spatiotemporal mixing of larval population pools in the Gulf of Mexico and Western Atlantic Margin. Larvae were collected during R/V Atlantis cruises AT42-24 (Spring 2020) and AT50-04 (Fall 2022), and R/V Thomas G. Thompson cruise TN-391 (Summer 2021). We analysed variation in fingerprints of 366 larvae among depths (500-3,000m), seven seep sites, and three sampling years (spawning periods). Fingerprints differed significantly among depths across spawning periods, among sites within spawning periods, and among spawning periods themselves. Results may reflect divergence in sources of organic matter during dispersal due to shifts in dispersal trajectories or water mass environmental chemistry over time. Additionally, results indicate that larvae may mix during early dispersal (i.e., during formation of the prodissoconch I shell growth region) and become more isolated by later dispersal (i.e., formation of prodissoconch II). Overall, over timescales of only a few years, deep-sea mussel larval pools may be subtly spatiotemporally isolated, which may limit population resilience to natural and anthropogenic disturbance.\n\ncdm_data_type = Other\nVARIABLES:\nYearSampled (unitless)\nDate (unitless)\nCruise (unitless)\nVehicle (unitless)\nDive_Number (unitless)\ndepth (m)\nSite (unitless)\nSite_Name (unitless)\nlatitude (degrees_north)\nlongitude (degrees_east)\n... (24 more variables)\n | https://erddap.bco-dmo.org/erddap/metadata/fgdc/xml/bcodmo_dataset_995312_v1_fgdc.xml | https://erddap.bco-dmo.org/erddap/metadata/iso19115/xml/bcodmo_dataset_995312_v1_iso19115.xml | https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_995312_v1/index.htmlTable | https://osprey.bco-dmo.org/dataset/995312
| https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_995312_v1.rss | https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_995312_v1&showErrors=false&email= | BCO-DMO | bcodmo_dataset_995312_v1 |