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  • 1
    Electronic Resource
    Electronic Resource
    Deep-sea amphipod swarms (1992)
    [s.l.] : Nature Publishing Group
    Nature 358 (1992), S. 25-26 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Sustained and rapid swimming activity of deep-sea invertebrates is an unusual phenomenon. Even at hydro-thermal vents, where food resources are enhanced through chemoautolithotrophic production, the dominant organisms are typically sessile or sedentary, though the swarming shrimp that crawl ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/358025a0
    Location Call Number Limitation Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Unknown
    Efficient trawl avoidance by mesopelagic fishes causes large underestimation of their biomass (2012)
    Inter Research
    In:  Marine Ecology Progress Series, 456 . pp. 1-6.
    Details
    Publication Date: 2021-08-04
    Description: Mesopelagic fishes occur in all the world’s oceans, but their abundance and consequently their ecological significance remains uncertain. The current global estimate based on net sampling prior to 1980 suggests a global abundance of one gigatonne (109 t) wet weight. Here we report novel evidence of efficient avoidance of such sampling by the most common myctophid fish in the Northern Atlantic, i.e. Benthosema glaciale. We reason that similar avoidance of nets may explain consistently higher acoustic abundance estimates of mesopelagic fish from different parts of the world’s oceans. It appears that mesopelagic fish abundance may be underestimated by one order of magnitude, suggesting that the role of mesopelagic fish in the oceans might need to be revised.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.3354/meps09785
    Location Call Number Limitation Availability
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 3
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    Unknown
    Geochemistry and Life at the Interfaces of Brine-Filled Deeps in the Red Sea (2019)
    Springer
    In:  In: Oceanographic and Biological Aspects of the Red Sea. , ed. by Rasul, N. M. A. and Stewart, I. C. F. Springer Oceanography Book series . Springer, Cham, pp. 185-194.
    Details
    Publication Date: 2020-08-05
    Description: The deep-sea brines of the Red Sea are unusual extreme environments and form characteristically steep gradients across the brine-seawater interfaces. Due to their unusual nature and unique combination of physical-chemical conditions these interfaces provide an interesting source of new findings in the fields of geochemistry, geology, microbiology, biotechnology, virology, and general biology. The current chapter summarizes recent and new results in the study of geochemistry and life at the interfaces of brine-filled deeps of the Red Sea.
    Type: Book chapter , NonPeerReviewed
    Format: text
    DOI: 10.1007/978-3-319-99417-8
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    OceanRep: Book chapter
  • 4
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    Unknown
    Diel Vertical Migration Behaviour of the Northern Krill (Meganyctiphanes norvegica Sars) (2010)
    Elsevier
    Details
    Publication Date: 2023-06-06
    Description: The prototype of Meganyctiphanes norvegica diel vertical migration (DVM) behaviour comprises ascent around dusk, feeding near the surface at night, and descent at dawn, explained as a trade-off between feeding and predator avoidance in an environment where both food and risk of predation is highest near surface. Light is the proximate cue, and daytime distribution is deeper in clear waters and sunny weather and nocturnal distributions deeper in moonlight. However, both internal state and external factors further affect and modify the diel migration pattern. While Meganyctiphanes migrates in synchrony to the surface at sunset, part of the population may descend soon after the ascent with individuals re-entering upper layers throughout the night. This has been explained with hungry individuals being prone to take larger risks and hence stay shallower, while satiated individuals seek shelter at depth. Females migrate closer to the surface than males of equivalent size, possibly due to their greater demand for energy to fuel egg production. Freshly moulted M. norvegica remain at depth throughout the diel cycle. This has been related to the fact that that krill do not feed during moulting, to reduced swimming capacity, and as a mechanism to avoid cannibalism whilst in a vulnerable condition. In some locations large parts of the population remain at depth at night. Such behaviour may incur access to demersal food sources, provide avoidance of predators, or can be a means to avoid horizontal transport to adjacent, unfavourable areas. Environmental gradients can arrest migrations of M. norvegica, yet the effect of physics is not always distinguished from associated biological properties, like subsurface maxima of phytoplankton located at pycnocline boundaries. Deeper nocturnal distribution when predators were abundant has been reported, and krill may adjust their distribution upwards when exposed to deep-living predators. Instantaneous escape to approaching predators is a common component of the anti-predator repertoire of Meganyctiphanes. Occasionally reported schooling behaviour that overrides normal DVM behaviour may serve anti-predation purposes, as well as being related to reproduction. M. norvegica can remain within confined areas, often defined by the bottom topography, even when exposed to strong currents. Behaviourally mediated retention may be accomplished by vertical migration in depth-stratified flows, but evidence for active use of DVM for the purpose of retention is so far circumstantial among M. norvegica. In several instances, large aggregations of krill that repeatedly occur in the same location appear to be accidental consequences of krill vertical migration behaviour interacting with the mean circulation and bottom topography, rather than representing active retention behaviour.
    Type: Book chapter , PeerReviewed
    Format: text
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    OceanRep: Book chapter
  • 5
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    Unknown
    Distribution and diel vertical movements of mesopelagic scattering layers in the Red Sea (2012)
    Springer
    Details
    Publication Date: 2022-05-25
    Description: © The Author(s), 2012. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Marine Biology 159 (2012): 1833-1841, doi:10.1007/s00227-012-1973-y.
    Description: The mesopelagic zone of the Red Sea represents an extreme environment due to low food concentrations, high temperatures and low oxygen waters. Nevertheless, a 38 kHz echosounder identified at least four distinct scattering layers during the daytime, of which the 2 deepest layers resided entirely within the mesopelagic zone. Two of the acoustic layers were found above a mesopelagic oxygen minimum zone (OMZ), one layer overlapped with the OMZ, and one layer was found below the OMZ. Almost all organisms in the deep layers migrated to the near-surface waters during the night. Backscatter from a 300 kHz lowered Acoustic Doppler Current Profiler indicated a layer of zooplankton within the OMZ. They carried out DVM, yet a portion remained at mesopelagic depths during the night. Our acoustic measurements showed that the bulk of the acoustic backscatter was restricted to waters shallower than 800 m, suggesting that most of the biomass in the Red Sea resides above this depth.
    Description: This research is based in part on work supported by Award Nos. USA 00002, KSA 00011 and KSA 00011/02 made by KAUST to the Woods Hole Oceanographic Institution.
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
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    PAPER (OA)
  • 6
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    Physical oceanography during Johan Hjort cruise JH97/8 (2011)
    PANGAEA
    In:  Institute of Marine Research, Bergen
    Details
    Publication Date: 2023-12-27
    Keywords: CTD; CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Elevation of event; Event label; JH97/8; JH97/8_603; JH97/8_604; JH97/8_605; JH97/8_606; JH97/8_607; JH97/8_608; JH97/8_609; JH97/8_610; JH97/8_611; JH97/8_612; JH97/8_613; JH97/8_667; JH97/8_668; JH97/8_669; JH97/8_670; JH97/8_671; JH97/8_672; JH97/8_673; JH97/8_674; JH97/8_675; JH97/8_676; Johan Hjort (1990); Latitude of event; Longitude of event; Norwegian Sea; Pressure, water; Salinity; Temperature, water; Variability of Exchanges in the Northern Seas; VEINS
    Type: Dataset
    Format: text/tab-separated-values, 9515 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    Data compilation of VEINS (2005)
    PANGAEA
    In:  International Council for the Exploration of the Sea, Copenhagen
    Details
    Publication Date: 2024-03-01
    Description: This data collection contains physical oceanographic and hydrochemistry data from 82 cruises in the frame of the project VEINS -Variability of Exchanges in the Northern Seas.
    Keywords: 06MT39_5; 06MT39_5/506-1; 06MT39_5/507-1; 06MT39_5/508-1; 06MT39_5/509-1; 06MT39_5/510-1; 06MT39_5/511-1; 06MT39_5/512-2; 06MT39_5/513-1; 06MT39_5/514-1; 06MT39_5/515-1; 06MT39_5/516-1; 06MT39_5/517-1; 06MT39_5/518-1; 06MT39_5/519-1; 06MT39_5/520-1; 06MT39_5/521-1; 06MT39_5/522-1; 06MT39_5/523-1; A09/98; A09/98_286; A09/98_288; A09/98_291; A09/98_292; A09/98_294; A09/98_296; A09/98_300; A09/98_302; A09/98_317; A09/98_319; A09/98_322; A09/98_324; A09/98_325; A09/98_327; A09/98_330; A09/98_331; A09/98_335; A09/98_356; A09/98_377; A09/98_379; A09/98_381; A09/98_383; A09/98_385; A09/98_387; A09/98_401; A09/98_424; A09/98_427; A09/98_430; A09/98_449; A09/98_451; A09/98_454; A09/98_456; A09/98_458; A09/98_461; A09/98_462; A09/98_465; A09/98_467; A09/98_470; A09/98_471; A09/98_477; A09/98_480; A09/98_483; A09/98_497; A09/98_499; A09/98_502; A09/98_504; A09/98_506; A09/98_519; A09/98_521; A09/98_522; A09/98_523; A09/98_525; A09/98_527; A09/98_534; A09/98_537; A09/98_539; A09/98_542; A09/98_544; A09/98_548; A09/98_549; A09/98_566; A09/98_569; A09/98_572; A09/98_574; A09/98_576; A09/98_578; A09/98_585; A09/98_588; A09/98_590; A09/98_591; A09/98_594; A09/98_597; A09/98_598; A09/98_599; A09/98_602; A09/98_603; A09/98_604; A09/98_606; A09/98_608; A09/98_610; A09/98_612; A10/99; A10/99_364-1; A10/99_366-1; A10/99_368-1; A10/99_370-1; A10/99_372-1; A10/99_374-1; A10/99_376-1; A10/99_379-1; A10/99_382-1; A10/99_384-1; A10/99_394-1; A10/99_396-1; A10/99_398-1; A10/99_400-1; A10/99_401-1; A10/99_403-1; A10/99_404-1; A10/99_406-1; A10/99_409-1; A10/99_444-1; A10/99_446-1; A10/99_448-1; A10/99_452-1; A10/99_454-1; A10/99_457-1; A10/99_481-1; A10/99_483-1; A10/99_486-1; A10/99_488-1; A10/99_490-1; A10/99_491-1; A10/99_509-1; A10/99_511-1; A10/99_513-1; A10/99_515-1; A10/99_517-1; A10/99_521-1; A10/99_522-1; A10/99_525-1; A10/99_529-1; A10/99_531-1; A10/99_534-1; A10/99_536-1; A10/99_551-1; A10/99_557-1; A10/99_559-1; A10/99_561-1; A10/99_564-1; A10/99_566-1; A10/99_568-1; A10/99_580-1; A10/99_582-1; A10/99_584-1; A10/99_586-1; A10/99_589-1; A10/99_592-1; A10/99_595-1; A10/99_597-1; A10/99_599-1; A10/99_600-1; A10/99_602-1; A10/99_603-1; A10/99_604-1; A10/99_606-1; A10/99_608-1; A10/99_612-1; A10/99_615-1; A10/99_618-1; A10/99_620-1; A10/99_640-1; A10/99_643-1; A10/99_646-1; A10/99_648-1; A10/99_650-1; A10/99_653-1; A10/99_655-1; A10/99_656-1; A10/99_658-1; A10/99_662-1; A10/99_664-1; A10/99_667-1; A10/99_670-1; A10/99_673-1; A10/99_676-1; A10/99_678-1; A10/99_680-1; A10/99_682-1; A10/99_685-1; A10/99_687-1; A10/99_689-1; A10/99_697-1; A10/99_698-1; A10/99_700-1; A10/99_702-1; A10/99_704-1; A10/99_705-1; A10/99_707-1; A14/97; A14/97_446; A14/97_448; A14/97_450; A14/97_452; A14/97_453; A14/97_455; A14/97_457; A14/97_458; A14/97_460; A14/97_467; A14/97_507; A14/97_509; A14/97_510; A14/97_514; A14/97_515; A14/97_517; A14/97_546; A14/97_548; A14/97_551; A14/97_556; A14/97_558; A14/97_576; A14/97_580; A14/97_582; A14/97_584; A14/97_586; A14/97_589; A14/97_592; A14/97_594; A14/97_597; A14/97_622; A14/97_624; A14/97_627; A14/97_641; A14/97_643; A14/97_644; A14/97_645; A14/97_648; A14/97_651; A14/97_658; A14/97_660; A14/97_663; A14/97_666; A14/97_668; A14/97_671; A14/97_672; A14/97_689; A14/97_691; A14/97_694; A14/97_696; A14/97_698; A14/97_700; A14/97_710; A14/97_711; A14/97_712; A14/97_714; A14/97_717; A14/97_720; A14/97_722; A14/97_723; A14/97_726; A14/97_729; A14/97_734; A14/97_739; A14/97_741; A14/97_742; A14/97_744; A14/97_746; A14/97_748; A14/97_759; ARA-12-1/97; ARA-12-1/97_398; ARA-12-1/97_399; ARA-12-1/97_400; ARA-12-1/97_401; ARA-12-1/97_402; ARA-12-1/97_403; ARA-12-1/97_404; ARA-12-1/97_405; ARA-12-1/97_406; ARA-12-1/97_407; ARA-12-1/97_408; ARA-12-1/97_409; ARA-12-1/97_410; ARA-12-1/97_411; ARA-12-1/97_412; ARA-12-1/97_413; ARA-12-1/97_414; ARA-12-1/97_415; ARA-12-1/97_416; ARA-12-1/97_417; ARA-12-1/97_418; ARA-12-1/97_419; ARA-12-1/97_420; ARA-12-1/97_421; ARA-12-1/97_422; ARA-12-1/97_423; ARA-12-1/97_424; ARA-12-1/97_425; ARA-12-2/97; ARA-12-2/97_426; ARA-12-2/97_427; ARA-12-2/97_428; ARA-12-2/97_429; ARA-12-2/97_430; ARA-12-2/97_431; ARA-12-2/97_432; ARA-12-2/97_433; ARA-12-2/97_434; ARA-12-2/97_435; ARA-12-2/97_436; ARA-12-2/97_437; ARA-12-2/97_438; ARA-12-2/97_439; ARA-12-2/97_440; ARA-12-2/97_441; ARA-12-2/97_442; ARA-12-2/97_443; ARA-12-2/97_444; ARA-12-2/97_445; ARA-12-2/97_446; ARA-12-2/97_447; ARA-12-2/97_448; ARA-12-2/97_449; ARA-12-2/97_450; ARA-12-2/97_451; ARA-12-2/97_452; ARA-12-2/97_453; ARA-12-2/97_454; ARA-12-2/97_455; ARA-12-2/97_456; ARA-12-2/97_457; ARA-12-2/97_458; ARA-12-2/97_459; ARA-12-2/97_460; ARA-12-2/97_461; ARA-12-2/97_462; ARA-12-2/97_463; ARA-12-2/97_464; ARA-12-2/97_465; ARA-12-2/97_466; ARA-12-2/97_467; ARA-12-2/97_468; ARA-12-2/97_469; ARA-12-2/97_470; ARA-12-2/97_471; ARA-12-2/97_472; ARA-12-2/97_473; ARA-12-2/97_474; ARA-12-2/97_475; ARA-12-2/97_476; ARA-12-2/97_477; ARA-12-2/97_478; ARA-12-2/97_479; ARA-12-2/97_480; ARA-12-2/97_481; ARA-12-2/97_482; ARA-12-2/97_483; ARA-12-2/97_484; ARA-12-2/97_485; ARA-12-2/97_486; ARA-12-2/97_487; ARA-12-2/97_488; ARA-12-2/97_489; ARA-12-2/97_490; ARA-12-2/97_491; ARA-12-2/97_492; ARA-12-2/97_493; ARA-12-2/97_494; ARA-12-2/97_495; ARA-12-2/97_496; ARA-12-2/97_497; ARA-12-3/97; ARA-12-3/97_498; ARA-12-3/97_499; ARA-12-3/97_500; ARA-12-3/97_501; ARA-12-3/97_502; ARA-12-3/97_503; ARA-12-3/97_504; ARA-12-3/97_505; ARA-12-3/97_506; ARA-12-3/97_507; ARA-12-3/97_508; ARA-12-3/97_509; ARA-12-3/97_510; ARA-12-3/97_511; ARA-12-3/97_512; ARA-12-3/97_513; ARA-12-3/97_514; ARA-12-3/97_515; ARA-12-3/97_516; ARA-12-3/97_517; ARA-12-3/97_518; ARA-12-3/97_519; ARA-12-3/97_521; ARA-12-3/97_522; ARA-12-3/97_523; ARA-12-3/97_524; ARA-12-3/97_525; ARA-12-3/97_526; ARA-12-3/97_527; ARA-12-3/97_528; ARA-12-3/97_529; ARA-12-3/97_530; ARA-12-3/97_531; ARA-12-3/97_532; ARA-12-3/97_533; ARA-12-3/97_534; ARA-12-3/97_535; ARA-12-3/97_536; ARA-12-3/97_537; ARA-12-3/97_538; ARA-12-3/97_539; ARA-12-3/97_540; ARA-12-3/97_541; ARA-12-3/97_542; ARA-12-3/97_543; ARA-12-3/97_544; ARA-12-3/97_545; ARA-12-3/97_546; ARA-12-3/97_547; ARA-12-3/97_548; ARA-12-3/97_549; ARA-12-3/97_550; ARA-12-3/97_551; ARA-12-3/97_552; ARA-12-3/97_553; ARA-12-3/97_554; ARA-12-3/97_555; ARA-12-3/97_556; ARA-12-3/97_557; ARA-12-3/97_558; ARA-12-3/97_559; ARA-12-3/97_560; ARA-12-3/97_561; ARA-12-3/97_562; ARA-12-3/97_563; ARA-12-3/97_564; ARA-12-3/97_565; ARA-12-3/97_566; ARA-12-3/97_567; ARA-12-3/97_568; ARA-12-3/97_569; ARA-12-3/97_570; ARA-12-3/97_571; ARA-12-3/97_572; ARA-12-3/97_573; ARA-12-3/97_574; ARA-12-3/97_575; ARA-12-3/97_576; ARA-12-3/97_577; ARA-12-3/97_578; Aranda (1989); ARK-XIV/2; ARK-XV/3; Arni Fridriksson; B02/98; B02/98-1001; B02/98-1011; B02/98-1021; B02/98-1031; B02/98-1061; B02/98-1062; B02/98-1071; B02/98-1081; B02/98-1101; B02/98-1111; B02/98-1121; B02/98-1131; B02/98-1141; B02/98-1151; B02/98-1181; B02/98-1191; B02/98-1221; B02/98-1222; B02/98-1231; B02/98-1241; B02/98-1251; B02/98-1261; B02/98-1271; B02/98-1281; B02/98-1291; B02/98-1292; B02/98-1293; B02/98-1301; B02/98-1311; B02/98-1321; B02/98-1341; B02/98-1342; B02/98-1361; B02/98-1371; B02/98-1381; B02/98-1391; B02/98-1401; B02/98-1411; B02/98-1421; B02/98-1431; B02/98-1441; B02/98-1451; B02/98-1461; B02/98-1471; B02/98-1481; B02/98-1491; B02/98-1501; B02/98-1511; B02/98-1521; B02/98-1531; B02/98-1541; B02/98-1551; B02/98-1561; B02/98-1571; B02/98-1581; B02/98-1591; B02/98-1601; B02/98-1611; B02/98-1622; B02/98-531; B02/98-541; B02/98-551; B02/98-561; B02/98-571; B02/98-581; B02/98-591; B02/98-601; B02/98-621; B02/98-622; B02/98-631; B02/98-641; B02/98-651; B02/98-661; B02/98-671; B02/98-681; B02/98-691; B02/98-701; B02/98-711; B02/98-721; B02/98-731; B02/98-741; B02/98-751; B02/98-761; B02/98-771; B02/98-781; B02/98-791; B02/98-801; B02/98-811; B02/98-821; B02/98-831; B02/98-841; B02/98-842; B02/98-843; B02/98-844; B02/98-845; B02/98-851; B02/98-861; B02/98-891; B02/98-901; B02/98-911; B02/98-921; B02/98-931; B02/98-941; B02/98-961; B02/98-971; B02/98-972; B02/98-973; B02/
    Type: Dataset
    Format: application/zip, 93 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 8
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    Raw EK60 echosounder data (38 and 120 kHz) collected during the Malaspina 2010 Spanish Circumnavigation Expedition (14th December 2010, Cádiz - 14th July 2011, Cartagena) (2020)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: These data consist of raw echosounder observations collected during the Malaspina 2010 Spanish Circumnavigation Expedition (14th December 2010, Cádiz-14th July 2011, Cartagena). The cruise was divided into seven legs: leg 1 (14th December 2010, Cádiz-13th January 2011, Rio de Janeiro), leg 2 (17th January 2011, Rio de Janeiro-6th February 2011, Cape Town), leg 3 (11th February 2011, Cape Town-13th March 2011, Perth), leg 4 (17th March 2011, Perth-30th March 2011, Sydney), leg 5 (16th April 2011, Auckland-8th May 2011, Honolulu), leg 6 (13th May 2011, Honolulu-10th June 2011, Cartagena de Indias) and leg 7 (19th June 2011, Cartagena de Indias-14th July 2011, Cartagena). Echosounder observations were made from the BIO Hespérides (A-33) using two EK60 GPTs operating two hull-mounted transducers (38 and 120 kHz). A calibration was carried out prior to the start of the expedition (30th of November 2010, close to Mazarron port, water temperature c. 17 degrees C) and values of the peak transducer gain and Simrad correction factor for both frequencies were updated in the ER60 software. Data are stored in raw proprietary Simrad (Bergen, Norway) format (.raw, .idx, .bot files).
    Keywords: 29HE20101215; 29HE20110117; 29HE20110211; 29HE20110317; 29HE20110416; 29HE20110513; 29HE20110619; Binary Object; Binary Object (File Size); Binary Object (MD5 Hash); Bioacoustics; echosounder; Echosounder, Simrad, EK60; EK60; ER60; Event label; Hespérides; Latitude of event; Latitude of event 2; Longitude of event; Longitude of event 2; MALASPINA_LEG1; MALASPINA_LEG1-track; MALASPINA_LEG2; MALASPINA_LEG2-1-track; MALASPINA_LEG2-2-track; MALASPINA_LEG3; MALASPINA_LEG3-1-track; MALASPINA_LEG3-2-track; MALASPINA_LEG3-3-track; MALASPINA_LEG3-4-track; MALASPINA_LEG4; MALASPINA_LEG4-1-track; MALASPINA_LEG4-2-track; MALASPINA_LEG5; MALASPINA_LEG5-1-track; MALASPINA_LEG5-2-track; MALASPINA_LEG5-3-track; MALASPINA_LEG6; MALASPINA_LEG6-1-track; MALASPINA_LEG6-2-track; MALASPINA_LEG7; MALASPINA_LEG7-track; MALASPINA-2010; Malaspina circumnavigation expedition; MH002_001; MH042_033; MH045_036; MH066_050; MH079_059; MH099_073; MH124_080; MH132_088; MH150_101; MH165_116; Simrad ER60 echo sounder (18, 38, 70, 120, 200 kHz); SUMMER; Sustainable Management of Mesopelagic Resources
    Type: Dataset
    Format: text/tab-separated-values, 15 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 9
    facet.materialart.
    Unknown
    Per station summaries of acoustic water column properties during MALASPINA-2010 (2021)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: This file provides daily/per station summaries of daytime and nighttime acoustic data (omitting data recorded within 1 hour of sunrise and sunset), specifically per day and night mesopelagic average nautical area scattering coefficient (NASC 200-1000 m), average total NASC (0-1000 m), and weighted mean depths (WMD) of mesopelagic and total NASC. Migration amplitude is the difference in day and night WMD, day to night ratio is the ratio of daytime to nighttime total NASC (0-1000 m) and migration ratio is calculated from the relative drop in mesopelagic backscatter (NASC 200-1000 m) during night. For details of calculations see Klevjer et al. 2016. Note that the provided positions correspond to the fixed Malapina station at that date, not the start and end point of the data collection.
    Keywords: 29HE20101215; 29HE20110117; 29HE20110211; 29HE20110317; 29HE20110416; 29HE20110513; 29HE20110619; after MacLennan et al. (2002); Backscatter; Bioacoustics; Calculated; Date/Time of event; DEPTH, water; echosounder; Echosounder, Simrad, EK60; Event label; Hespérides; Latitude of event; Longitude of event; MALASPINA_LEG1; MALASPINA_LEG1_003-5; MALASPINA_LEG1_007-5; MALASPINA_LEG1_008-5; MALASPINA_LEG1_009-5; MALASPINA_LEG1_010-5; MALASPINA_LEG1_011-5; MALASPINA_LEG1_013-5; MALASPINA_LEG1_014-5; MALASPINA_LEG1_015-5; MALASPINA_LEG1_016-5; MALASPINA_LEG1_017-5; MALASPINA_LEG1_018-5; MALASPINA_LEG1_019-5; MALASPINA_LEG1_020-5; MALASPINA_LEG1_021-5; MALASPINA_LEG1_022-5; MALASPINA_LEG1_023-5; MALASPINA_LEG1_024-5; MALASPINA_LEG1_025-5; MALASPINA_LEG2; MALASPINA_LEG2_033-5; MALASPINA_LEG2_035-5; MALASPINA_LEG2_037-5; MALASPINA_LEG2_038-5; MALASPINA_LEG3; MALASPINA_LEG3_045-5; MALASPINA_LEG3_046-5; MALASPINA_LEG3_047-5; MALASPINA_LEG3_048-5; MALASPINA_LEG3_049-5; MALASPINA_LEG3_050-5; MALASPINA_LEG3_051-5; MALASPINA_LEG3_052-5; MALASPINA_LEG3_053-5; MALASPINA_LEG3_054-5; MALASPINA_LEG3_055-5; MALASPINA_LEG3_056-5; MALASPINA_LEG3_057-5; MALASPINA_LEG3_058-5; MALASPINA_LEG3_059-5; MALASPINA_LEG3_060-5; MALASPINA_LEG3_061-5; MALASPINA_LEG3_062-5; MALASPINA_LEG3_063-5; MALASPINA_LEG3_064-5; MALASPINA_LEG3_066-5; MALASPINA_LEG3_067-5; MALASPINA_LEG3_068-5; MALASPINA_LEG4; MALASPINA_LEG4_070-5; MALASPINA_LEG4_071-5; MALASPINA_LEG4_077-5; MALASPINA_LEG4_078-5; MALASPINA_LEG5; MALASPINA_LEG5_082-5; MALASPINA_LEG5_083-5; MALASPINA_LEG5_084-5; MALASPINA_LEG5_085-5; MALASPINA_LEG5_086-5; MALASPINA_LEG5_087-5; MALASPINA_LEG5_088-5; MALASPINA_LEG5_089-5; MALASPINA_LEG5_090-5; MALASPINA_LEG5_091-5; MALASPINA_LEG5_092-5; MALASPINA_LEG5_093-5; MALASPINA_LEG5_094-5; MALASPINA_LEG5_095-5; MALASPINA_LEG5_096-5; MALASPINA_LEG5_097-5; MALASPINA_LEG5_098-5; MALASPINA_LEG5_099-5; MALASPINA_LEG6; MALASPINA_LEG6_101-5; MALASPINA_LEG6_102-5; MALASPINA_LEG6_103-5; MALASPINA_LEG6_104-5; MALASPINA_LEG6_105-5; MALASPINA_LEG6_106-5; MALASPINA_LEG6_108-5; MALASPINA_LEG6_109-5; MALASPINA_LEG6_110-5; MALASPINA_LEG6_111-5; MALASPINA_LEG6_112-5; MALASPINA_LEG6_113-5; MALASPINA_LEG6_114-5; MALASPINA_LEG6_115-5; MALASPINA_LEG6_116-5; MALASPINA_LEG6_117-5; MALASPINA_LEG6_118-5; MALASPINA_LEG6_119-5; MALASPINA_LEG6_120-5; MALASPINA_LEG6_121-5; MALASPINA_LEG6_122-5; MALASPINA_LEG6_123-5; MALASPINA_LEG6_124-5; MALASPINA_LEG6_125-5; MALASPINA_LEG6_126-5; MALASPINA_LEG7; MALASPINA_LEG7_127-5; MALASPINA_LEG7_128-5; MALASPINA_LEG7_129-5; MALASPINA_LEG7_130-5; MALASPINA_LEG7_131-5; MALASPINA_LEG7_132-5; MALASPINA_LEG7_133-5; MALASPINA_LEG7_134-5; MALASPINA_LEG7_135-5; MALASPINA_LEG7_136-5; MALASPINA_LEG7_138-5; MALASPINA_LEG7_139-5; MALASPINA_LEG7_140-5; MALASPINA_LEG7_141-5; MALASPINA_LEG7_142-5; MALASPINA_LEG7_143-5; MALASPINA_LEG7_144-5; MALASPINA_LEG7_145-5; MALASPINA_LEG7_146-5; MALASPINA_LEG7_147-5; MALASPINA-2010; Malaspina circumnavigation expedition; mesopelagic organisms; MH009_007; MH010_008; MH012_010; MH013_011; MH015_013; MH016_014; MH017_015; MH018_016; MH019_017; MH020_018; MH021_019; MH022_020; MH023_021; MH024_022; MH025_023; MH026_024; MH027_025; MH042_033; MH044_035; MH046_037; MH047_038; MH061_045; MH062_046; MH063_047; MH064_048; MH065_049; MH066_050; MH072_052; MH074_054; MH075_055; MH076_056; MH077_057; MH078_058; MH079_059; MH080_060; MH081_061; MH083_063; MH084_064; MH086_066; MH087_067; MH096_070; MH103_077; MH126_082; MH127_083; MH128_084; MH129_085; MH130_086; MH131_087; MH132_088; MH133_089; MH134_090; MH135_091; MH136_092; MH137_093; MH138_094; MH139_095; MH140_096; MH141_097; MH142_098; MH143_099; MH150_101; MH151_102; MH152_103; MH153_104; MH154_105; MH155_106; MH157_108; MH158_109; MH159_110; MH160_111; MH161_112; MH162_113; MH163_114; MH164_115; MH165_116; MH166_117; MH167_118; MH168_119; MH169_120; MH170_121; MH171_122; MH172_123; MH173_124; MH174_125; MH175_126; MH188_127; MH189_128; MH190_129; MH191_130; MH193_131; MH194_132; MH195_133; MH196_134; MH197_135; MH198_136; MH200_138; MH201_139; MH202_140; MH203_141; MH204_142; MH205_143; MH206_144; MH207_145; MH208_146; Migration amplitude; Migration ratio; Nautical area scattering coefficient, day to night ratio; Nautical area scattering coefficient, mean; Nautical area scattering coefficient, median; Nautical area scattering coefficient, standard deviation; Nautical area scattering coefficient, weighted mean depth; Nautical area scattering coefficient, weighted mean depth, maximum segment; Nautical area scattering coefficient, weighted mean depth, minimum segment; Nautical area scattering coefficient, weighted mean depth, standard deviation; Number of segments; SUMMER; Sustainable Management of Mesopelagic Resources; Time of day
    Type: Dataset
    Format: text/tab-separated-values, 4788 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 10
    facet.materialart.
    Unknown
    Integrated daytime EK60 echosounder data from Malaspina-2010 cruise (2020)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: Daytime acoustic data (nautical area scattering coefficients, in m2/nmi2) integrated over 2 m vertical bins, from 200 to 1000 m depth. Data in each “pixel” is the average of all cleaned and valid data recorded at that depth range, in a time period starting 8 hours before the start of a station (defined as start of the CTD cast) and ending 8 hours after the start of the station, subject to being in the period between 1 hour after local sunrise and 1 hour prior to local sunset (i.e. during local daytime hours, but removing crepuscular periods). The relatively long interval over which data was accepted around each station was chosen due to frequent occurrences of periods of unusable acoustic data. Note that the provided positions correspond to the fixed Malapina station at that date, not the start and end point of the data collection.
    Keywords: 29HE20101215; 29HE20110117; 29HE20110211; 29HE20110317; 29HE20110416; 29HE20110513; 29HE20110619; after MacLennan et al. (2002); Backscatter; Bioacoustics; Date/Time of event; DEPTH, water; Echosounder, Simrad, EK60; Event label; Hespérides; Latitude of event; Longitude of event; Malaspina; MALASPINA_LEG1; MALASPINA_LEG1_007-5; MALASPINA_LEG1_008-5; MALASPINA_LEG1_010-5; MALASPINA_LEG1_011-5; MALASPINA_LEG1_012-5; MALASPINA_LEG1_013-5; MALASPINA_LEG1_014-5; MALASPINA_LEG1_015-5; MALASPINA_LEG1_016-5; MALASPINA_LEG1_017-5; MALASPINA_LEG1_018-5; MALASPINA_LEG1_019-5; MALASPINA_LEG1_020-5; MALASPINA_LEG1_021-5; MALASPINA_LEG1_022-5; MALASPINA_LEG1_023-5; MALASPINA_LEG1_024-5; MALASPINA_LEG1_025-5; MALASPINA_LEG2; MALASPINA_LEG2_033-5; MALASPINA_LEG2_035-5; MALASPINA_LEG2_037-5; MALASPINA_LEG2_038-5; MALASPINA_LEG3; MALASPINA_LEG3_045-5; MALASPINA_LEG3_046-5; MALASPINA_LEG3_047-5; MALASPINA_LEG3_048-5; MALASPINA_LEG3_049-5; MALASPINA_LEG3_050-5; MALASPINA_LEG3_052-5; MALASPINA_LEG3_054-5; MALASPINA_LEG3_055-5; MALASPINA_LEG3_056-5; MALASPINA_LEG3_057-5; MALASPINA_LEG3_058-5; MALASPINA_LEG3_059-5; MALASPINA_LEG3_060-5; MALASPINA_LEG3_061-5; MALASPINA_LEG3_063-5; MALASPINA_LEG3_064-5; MALASPINA_LEG3_065-5; MALASPINA_LEG3_066-5; MALASPINA_LEG3_067-5; MALASPINA_LEG4; MALASPINA_LEG4_069-5; MALASPINA_LEG4_070-5; MALASPINA_LEG4_077-5; MALASPINA_LEG5; MALASPINA_LEG5_082-5; MALASPINA_LEG5_083-5; MALASPINA_LEG5_084-5; MALASPINA_LEG5_085-5; MALASPINA_LEG5_086-5; MALASPINA_LEG5_087-5; MALASPINA_LEG5_088-5; MALASPINA_LEG5_089-5; MALASPINA_LEG5_090-5; MALASPINA_LEG5_091-5; MALASPINA_LEG5_092-5; MALASPINA_LEG5_093-5; MALASPINA_LEG5_094-5; MALASPINA_LEG5_095-5; MALASPINA_LEG5_096-5; MALASPINA_LEG5_097-5; MALASPINA_LEG5_098-5; MALASPINA_LEG5_099-5; MALASPINA_LEG6; MALASPINA_LEG6_101-5; MALASPINA_LEG6_102-5; MALASPINA_LEG6_103-5; MALASPINA_LEG6_104-5; MALASPINA_LEG6_105-5; MALASPINA_LEG6_106-5; MALASPINA_LEG6_108-5; MALASPINA_LEG6_109-5; MALASPINA_LEG6_110-5; MALASPINA_LEG6_111-5; MALASPINA_LEG6_112-5; MALASPINA_LEG6_113-5; MALASPINA_LEG6_114-5; MALASPINA_LEG6_115-5; MALASPINA_LEG6_116-5; MALASPINA_LEG6_117-5; MALASPINA_LEG6_118-5; MALASPINA_LEG6_119-5; MALASPINA_LEG6_120-5; MALASPINA_LEG6_121-5; MALASPINA_LEG6_122-5; MALASPINA_LEG6_123-5; MALASPINA_LEG6_124-5; MALASPINA_LEG6_125-5; MALASPINA_LEG6_126-5; MALASPINA_LEG7; MALASPINA_LEG7_127-5; MALASPINA_LEG7_128-5; MALASPINA_LEG7_129-5; MALASPINA_LEG7_130-5; MALASPINA_LEG7_131-5; MALASPINA_LEG7_132-5; MALASPINA_LEG7_133-5; MALASPINA_LEG7_134-5; MALASPINA_LEG7_135-5; MALASPINA_LEG7_136-5; MALASPINA_LEG7_138-5; MALASPINA_LEG7_139-5; MALASPINA_LEG7_140-5; MALASPINA_LEG7_141-5; MALASPINA_LEG7_142-5; MALASPINA_LEG7_143-5; MALASPINA_LEG7_144-5; MALASPINA_LEG7_145-5; MALASPINA_LEG7_146-5; MALASPINA_LEG7_147-5; MALASPINA-2010; Malaspina circumnavigation expedition; mesopelagic; MH009_007; MH010_008; MH012_010; MH013_011; MH014_012; MH015_013; MH016_014; MH017_015; MH018_016; MH019_017; MH020_018; MH021_019; MH022_020; MH023_021; MH024_022; MH025_023; MH026_024; MH027_025; MH042_033; MH044_035; MH046_037; MH047_038; MH061_045; MH062_046; MH063_047; MH064_048; MH065_049; MH066_050; MH072_052; MH074_054; MH075_055; MH076_056; MH077_057; MH078_058; MH079_059; MH080_060; MH081_061; MH083_063; MH084_064; MH085_065; MH086_066; MH087_067; MH095_069; MH096_070; MH103_077; MH126_082; MH127_083; MH128_084; MH129_085; MH130_086; MH131_087; MH132_088; MH133_089; MH134_090; MH135_091; MH136_092; MH137_093; MH138_094; MH139_095; MH140_096; MH141_097; MH142_098; MH143_099; MH150_101; MH151_102; MH152_103; MH153_104; MH154_105; MH155_106; MH157_108; MH158_109; MH159_110; MH160_111; MH161_112; MH162_113; MH163_114; MH164_115; MH165_116; MH166_117; MH167_118; MH168_119; MH169_120; MH170_121; MH171_122; MH172_123; MH173_124; MH174_125; MH175_126; MH188_127; MH189_128; MH190_129; MH191_130; MH193_131; MH194_132; MH195_133; MH196_134; MH197_135; MH198_136; MH200_138; MH201_139; MH202_140; MH203_141; MH204_142; MH205_143; MH206_144; MH207_145; MH208_146; Nautical area scattering coefficient, mean; SUMMER; Sustainable Management of Mesopelagic Resources
    Type: Dataset
    Format: text/tab-separated-values, 43045 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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