Mapping of hemipelagic versus turbiditic muds by feeding traces observed in deep-sea photographs

Huggett, Q. J.

doi:10.1144/gsl.sp.1987.031.01.09

Cited by 23 publications

(18 citation statements)

References 12 publications

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“…Such deposits are known to blanket the Madeira Abyssal Plain where the Quaternary succession consists of thick turbidite units separated by thin pelagic layers (Weaver and Kuijpers, 1983;Weaver et al, 1986). They clearly influence the abyssal biota since areas of the Madeira Abyssal Plain underlain by turbiditic and pelagic sediments have quite different assemblages of animal traces (Huggett, 1986).. Turbidity currents must have devastated benthic life over large tracts of ocean floor and controlled the nature of recolonizing communities. However, such events have been rare along the northwest African margin with only one major turbidite being deposited, on average, every 30 000 years during the last 730 000 years (Masson et al, 1994)..Hence, all but the most recent turbidites are blanketed by pelagic sediments.…”

Section: Dinet Andmentioning

confidence: 99%

Meiobenthos of the Deep Northeast Atlantic

Vincx¹,

Bett²,

Dinet³

et al. 1994

Advances in Marine Biology

121

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Section: Dinet Andmentioning

confidence: 99%

Meiobenthos of the Deep Northeast Atlantic

Vincx¹,

Bett²,

Dinet³

et al. 1994

Advances in Marine Biology

121

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“…(). Regarding this, some deep‐marine recent traces (Huggett ; Gaillard ; Bett et al . ; Turnewitsch et al .…”

Section: Radial To Rosette Ichnofossilsunclassified

“…Asterichnus was made infaunally at lithologic interfaces, in contrast to morhologically similar structures observed on the sediment surface of modern seas (Bandel 1967). Some deep-marine modern occurrences (Ohta 1984;Huggett 1987;Turnewitsch et al 2000;Bell et al 2013) may be analogs, and so are considered here.…”

Section: Radial To Rosette Ichnogeneramentioning

confidence: 99%

Unravelling Phanerozoic evolution of radial to rosette trace fossils

Muñoz

Mángano

Buatois

2019

LET

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Feeding trace fossils, produced by either deposit or detritus feeders and showing radial to rosetted morphology, are all included in the same architectural category. These radial to rosette ichnofossils are widely recorded worldwide throughout the Phanerozoic and have attracted the attention of numerous ichnologists for decades. Construction of a database summarizing occurrences of radial to rosette trace fossils through the Phanerozoic shows that representatives of this category occurred for the first time during the Fortunian, which accounts for the appearance of at least 12% of the total number of ichnogenera in this category. Overall, 32% of all known rosette ichnogenera resulted from the Cambrian Explosion. A second ichnodiversity increase took place (20%) during the Ordovician. Subsequent to the Great Ordovician Biodiversification Event, this architectural category shows minor fluctuations in ichnodiversity resulting in a long‐term plateau. The apparent decline in ichnodiversity by the end of the Cenozoic could reflect a taphonomic artefact resulting from the difficulties of identifying cumulative trace fossils in highly bioturbated modern sediments. Our data set indicates that several radial to rosette ichnogenera (e.g. Arenituba, Dactylophycus, Gyrophyllites, Phoebichnus, Volkichnium) occurred first in shallow‐marine settings and then migrated to either deeper‐water or marginal‐marine environments, while others (e.g. Asterichnus, Cladichnus, Dactyloidites) apparently first occurred in deep‐sea environments and then migrated to shallower waters.

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“…Seabed survey photography was undertaken using the National Oceanography Centre (NOC) wide-angle seabed photography (WASP) vehicle and the NOC Autosub AUV (Jones et al 2005). The WASP vehicle (Huggett 1987) is an off-bottom (2Á4 m) towed camera platform, operated using an acoustic telemetry system, carrying a vertically mounted still camera and a vertically mounted video camera. This vehicle was typically operated for 1 h at the seabed, yielding some 250 still photographs (35 mm Kodak Vision 250D colour negative) and continuous video footage (mini digital video cassette).…”

Section: Field Studiesmentioning

confidence: 99%

Depth-related changes in the arctic epibenthic megafaunal assemblages of Kangerdlugssuaq, East Greenland

Jones¹,

Bett²,

Tyler³

2007

Marine Biology Research

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The effects of depth-related differences in environmental factors (pressure, hydrography, habitat and disturbance) on the benthic megafauna at the mouth of Kangerdlugssuaq Fjord in Arctic Greenland were investigated using a towed camera platform and autonomous underwater vehicle photographs. Large reductions in faunal density (60,132 to 1881 individuals ha (1 ) and increases in diversity (H?00.93 Á2.54), through increases in richness (ES (220) 07.6 Á18.8) and reductions in dominance (Berger ÁParker index 00.77 Á0.38) were found between 270 and 720 m water depth. Assemblages were separated into distinct shallow, intermediate and deep faunas by multivariate community analysis. In the shallower sites there were high levels of iceberg disturbance, directly reducing diversity as well as creating a complex, patchy environment inhabited by high densities of mobile suspension-feeding epifauna. In the deeper areas there was small-scale disturbance from the deposition of drop stones, but at a relatively low frequency and magnitude, which allowed increased species diversity. Proportions of deposit-feeding epifaunal and infaunal taxa rose with depth, as indicated by an increase with depth in faunal traces. Decreases in faunal density probably resulted from decreased food supply with depth.

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Mapping of hemipelagic versus turbiditic muds by feeding traces observed in deep-sea photographs

Cited by 23 publications

References 12 publications

Meiobenthos of the Deep Northeast Atlantic

Meiobenthos of the Deep Northeast Atlantic

Unravelling Phanerozoic evolution of radial to rosette trace fossils

Depth-related changes in the arctic epibenthic megafaunal assemblages of Kangerdlugssuaq, East Greenland

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