The sub-ice algal community in the Chukchi sea: large- and small-scale patterns of abundance based on images from a remotely operated vehicle

Ambrose, William G.; Quillfeldt, Cecilie von; Clough, Lisa M.; Tilney, Peter V.R.; Tucker, T

doi:10.1007/s00300-005-0002-8

Cited by 89 publications

(82 citation statements)

References 55 publications

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“…Frustules of ice algae have been previously recorded in the sediment of Arctic shelves (Sancetta 1981;Cremer 1999;Djinoridze et al 1999;Polyakova 2003;Ambrose et al 2005) or have been suspected to occur due to observations of high concentrations of chl a and/or fucoxanthin (Schewe and Soltwedel 2003;Pirtle-Levy et al 2009). Here, the percentage of empty and viable pennate diatoms increased (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…However, ice algae and phytoplankton diatoms have the same pigment signature, which means they can only be distinguished by a microscopic analysis of their respective communities. The direct study of diatom frustules in the sediment of Arctic shelves has revealed the presence of ice-associated diatom species under seasonally ice-covered waters (Sancetta 1981;Cremer 1999;Djinoridze et al 1999;Polyakova 2003;Ambrose et al 2005).…”

Section: Introductionmentioning

confidence: 99%

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A multiple biomarker approach to tracking the fate of an ice algal bloom to the sea floor

2010

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A multiple biomarker approach to tracking the fate of an ice algal bloom to the sea floor

2010

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“…The use of remotely operated vehicles (ROV) and autonomous underwater vehicles (AUV) under polar sea ice has been explored already more than a decade ago (Gutt, 1995;Ambrose et al, 2005;Wadhams et al, 2006;Kaminski et al, 2010) with vehicles targeted at a specific task using a limited set of sensors. Today they are operated on a more regular basis (Nicolaus and Katlein, 2013;Norgren and Skjetne, 2014;Katlein et al, 2015a;Williams et al, 2015;Forrest et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

A New Remotely Operated Sensor Platform for Interdisciplinary Observations under Sea Ice

et al. 2017

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Observation of the climate and ecosystem of ice covered polar seas is a timely task for the scientific community. The goal is to assess the drastic and imminent changes of the polar sea ice cover induced by climate change. Retreating and thinning sea ice affects the planets energy budget, atmospheric, and oceanic circulation patterns as well as the ecosystem associated with this unique habitat. To increase the observational capabilities of sea ice scientists, we equipped a remotely operated vehicle (ROV) as sensor platform for interdisciplinary research at the ice water interface. Here, we present the technical details and operation scheme of the new vehicle and provide data examples from a first campaign in the Arctic in autumn 2016 to demonstrate the vehicle's capabilities. The vehicle is designed for efficient operations in the harsh polar conditions. Redundant modular design allows operation by three scientists simultaneously operating a wide variety of sensors. Sensors from physical, chemical, and biological oceanography are combined with optical and acoustic sea ice sensors to provide a comprehensive picture of the underside of sea ice. The sensor suite provides comprehensive capabilities and can be further extended as additional ports for power and communication are available. The vehicle provides full six degrees of freedom in navigation, enabling intervention, and manipulation skills despite its simple one function manipulator arm.

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“…Production is also low in the western Beaufort Sea, with some exceptions, such as in upwelling-induced algal blooms at the outer shelf/upper slope region Tremblay et al 2011). In these shallow shelf areas, much of the organic matter that is formed in surface shelf waters is either exported unconsumed to the seafloor and fuels productive benthic communities (Ambrose et al 2005;Grebmeier et al 2006Grebmeier et al , 2015Grebmeier 2012), or, having reached the shelf break, it is transported into the basin Moran et al 2005). Mud and muddy sands dominate in offshore sediments in the northern Bering, Chukchi, and East Siberian Seas, while finer silts and clays occur in the slope and basin regions (Grebmeier et al 2006;Grebmeier and Cooper 2014a;Pisareva et al 2015).…”

Section: Study Areamentioning

confidence: 99%

Sipunculan fauna in the Pacific Arctic region: a significant component of benthic infaunal communities

2017

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The Sipuncula show low species diversity in the Arctic Ocean, but they often occur in very high numbers and biomass, and can dominate shelf benthic communities. We describe here the patterns of sipunculan diversity, abundance, biomass, and species distribution in the Pacific Arctic, and the relation of those patterns to controlling environmental factors. Five species (including two subspecies) belonging to two families and three genera are known to be present in Pacific-influenced Arctic waters. Although sipunculans were found at only about 30% of sampled stations, they constituted, if present, up to about 10% of the total macrobenthic abundance, and over 80% of the total infaunal biomass, particularly in many locations in the Chukchi Sea. The mean sipunculan abundance was 24.5 ± 155.9 individuals m -2 , with a maximum of 1745 individuals m -2 . The mean sipunculan biomass was 14.0 ± 73.8 g wet weight m -2 , with a maximum of 698.7 g wet weight m -2 in the northwest Chukchi Sea. The sipunculan abundances and biomass observed were related to latitude, depth, and sediment characteristics. The populations observed should be considered significant and characteristic components of the Pacific Arctic shallow shelf systems and food webs. This conclusion proves to be true also for other Arctic shelf seas like the Barents Sea, and deep Arctic ecosystems.

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The sub-ice algal community in the Chukchi sea: large- and small-scale patterns of abundance based on images from a remotely operated vehicle

Cited by 89 publications

References 55 publications

A multiple biomarker approach to tracking the fate of an ice algal bloom to the sea floor

A multiple biomarker approach to tracking the fate of an ice algal bloom to the sea floor

A New Remotely Operated Sensor Platform for Interdisciplinary Observations under Sea Ice

Sipunculan fauna in the Pacific Arctic region: a significant component of benthic infaunal communities

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