Strategic Study of CAE, Journal Year: 2023, Volume and Issue: 25(3), P. 1 - 1
Published: Jan. 1, 2023
Language: Английский
ZooKeys, Journal Year: 2025, Volume and Issue: 1222, P. 1 - 250
Published: Jan. 3, 2025
The methane seeps on the Pacific margin of Costa Rica support extensive animal diversity and offer insights into deep-sea biogeography. During five expeditions between 2009 2019, we conducted intensive faunal sampling via 63 submersible dives to 11 localities at depths 300–3600 m. Based these published literature, compiled voucher specimens, images, 274 newly DNA sequences present a taxonomic inventory macrofaunal megafaunal with focus invertebrates. In total 488 morphospecies were identified, representing highest number distinct from single seep or vent region date. Of these, 131 are described species, least 58 undescribed remainder include some degree uncertainty, likely additional species. 38 known only their vicinity. Fifteen range extensions also reported for species Mexico, Galápagos seamounts, Chile, western Pacific; as well 16 new depth records three occur vents organic falls. No evolutionary narrative explains patterns biodiversity seeps, even morphologically indistinguishable can show different biogeographic affinities, ranges, ranges. value careful molecular taxonomy comprehensive specimen-based regional inventories is emphasized research monitoring.
Language: Английский
Citations
1
Earth-Science Reviews, Journal Year: 2023, Volume and Issue: 243, P. 104487 - 104487
Published: June 28, 2023
Precipitation of methane-derived authigenic carbonates (MDAC) is an integral part marine methane production and consumption, but MDAC's relative significance to the global carbon cycle not well understood. Here we provide a synthesis perspective highlight MDAC from biogeochemistry viewpoint. formation result archive carbon‑sulfur (CS) coupling in shallow sulfatic zone carbon‑silicon (CSi) deeper methanic sediments. constitute sequestration 3.93 Tmol C yr−1 (range 2.34–5.8 yr−1) modern ocean are third-largest burial mechanism This compares 29% (11–57%) organic 10% (6–23%) skeletal carbonate along continental margins. also important sink for benthic alkalinity and, thereby, potential contributor bottom water acidification. Our understanding impact on biogeochemical cycles has evolved over past five decades what was traditionally considered passive seep-oasis setting now dynamic factory expanding deep sediments waters—a that been operational since Precambrian. We present strong case need improve regional scale quantification accumulation rates associated parameters, leading their incorporation paleo‑carbon budgets next phase exploration.
Language: Английский
Citations
21
Invertebrate Systematics, Journal Year: 2023, Volume and Issue: 37(1), P. 14 - 60
Published: Jan. 10, 2023
Munidopsid squat lobsters are among the most abundant decapods at abyssal depths and diverse lobster group in East Pacific region. During recent cruises along Pacific, many deep-sea were collected. Among these, we described five new munidopsid species supported both by morphological characters molecular phylogenetics: Munidopsis girguisi sp. nov., M. nautilus testuda cortesi nov. hendrickxi We also report records of several across that increase distribution ranges. Here, reconstructed phylogenetic relationships relation to other Galatheoidea using one nuclear two mitochondrial gene fragment(s); performed single locus delimitation analyses explore status various taxa. The taxa photographed, illustrated imaged with micro-computed tomography. results show that: (1) Janetogalathea californiensis, previously included family Galatheidae, nests within Munidopsidae; (2) position Phylladiorhynchus Coralliogalathea as belonging Galatheidae is not supported; (3) paraphyletic, agreeing systematic hypotheses. Short genetic distances suggested a clade mostly constituted might include fewer than currently considered, wider geographic range conforming traditional hypotheses cosmopolitanisms species. ZooBank: urn:lsid:zoobank.org:pub:CED9EB18-7061-47A7-B2FF-7F1DAFCC7B12.
Language: Английский
Citations
19
Proceedings of the Royal Society B Biological Sciences, Journal Year: 2023, Volume and Issue: 290(2008)
Published: Oct. 3, 2023
Deep-sea lineages are generally thought to arise from shallow-water ancestors, but this hypothesis is based on a relatively small number of taxonomic groups. Anthozoans, which include corals and sea anemones, significant contributors the faunal diversity deep sea, timing mechanisms their invasion into biome remain elusive. Here, we reconstruct fully resolved, time-calibrated phylogeny 83 species in order Antipatharia (black coral) investigate bathymetric evolutionary history. Our reconstruction indicates that extant black coral first diversified continental slope depths (∼250–3000 m) during early Silurian (∼437 millions years ago (Ma)) subsequently radiated into, within, both shelf (less than 250 abyssal (greater 3000 habitats. Ancestral state analysis suggests appearance morphological features enhanced ability acquire nutrients coincided with novel depths. findings have important conservation implications for anthozoan lineages, as loss ‘source’ could threaten history confound future events, thereby warranting protection.
Language: Английский
Citations
11
Frontiers in Earth Science, Journal Year: 2025, Volume and Issue: 13
Published: April 22, 2025
Abyssal plains lie at water depths of 3,000–6,000 m and account for 84.7% the global ocean seafloor. This vast landsystem is believed to be one major reservoirs biodiversity within deep-sea. However, it also least explored parts due logistical challenges exploring great over spatial scales. work presents first results Trans-Pacific Transit (TPT), a six-leg expedition that collected remote imagery video footage seafloor sediments substrate habitats central eastern Pacific Ocean. Qualitative analysis lander revealed surficial sediment coverage identified during TPT survey dominated by calcareous sediments, clays, radiolarian sediments. The distribution these mostly consistent with previously suggested predictive models. In comparison, polymetallic nodules are more pervasive across Ocean than suggested. Several unknown nodule sites have been predominantly located in clay-dominated North Some newly fields between 0 15° S proximity French Polynesia. All dataset coincide reduced rates sedimentation lower levels surface Chlorophyll- . provides new insights into variability section Ocean, representing an unprecedented scale modern surveys.
Language: Английский
Citations
0
Progress In Oceanography, Journal Year: 2024, Volume and Issue: 229, P. 103340 - 103340
Published: Sept. 6, 2024
Language: Английский
Citations
2
Published: Aug. 21, 2024
The methane seeps on the Pacific margin of Costa Rica support extensive animal diversity and offer insights into deep-sea biogeography phylogeography. During five expeditions between 2009 2019, we conducted intensive faunal sampling via 63 submersible dives to 11 localities at depths 300-3600 m. Based these published literature, compiled voucher specimens, images, 267 newly DNA sequences present a taxonomic inventory macrofaunal megafaunal with focus invertebrates. We identified 487 morphospecies, which 132 are described species, least 57 undescribed remainder include some degree uncertainty, likely representing additional species. This total represents highest number distinct morphospecies from single seep or vent region date. Of 38 known only seeps. also report 13 range extensions for species Mexico, Galápagos seamounts, Chile, western Pacific; 17 new depth records; three records occur vents organic falls. note that no evolutionary narrative explains patterns biodiversity seeps, as even morphologically indistinguishable can show different phylogeographic affinities, biogeographic ranges, restrictions. emphasize value careful molecular taxonomy comprehensive specimen-based regional inventories research monitoring.
Language: Английский
Citations
1
Strategic Study of CAE, Journal Year: 2023, Volume and Issue: 25(3), P. 1 - 1
Published: Jan. 1, 2023
Language: Английский
Citations
3