GLORIA

GEOMAR Library Ocean Research Information Access

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Document type
Keywords
Publisher
  • 1
    Publication Date: 2023-07-10
    Keywords: Aethotaxis mitopteryx; Aethotaxis mitopteryx, biomass, wet mass; Aethotaxis mitopteryx, wet mass; Agassiz Trawl; AGT; Akarotaxis nudiceps; Akarotaxis nudiceps, biomass, wet mass; Akarotaxis nudiceps, wet mass; Anotopterus pharao; Anotopterus pharao, biomass, wet mass; Anotopterus pharao, wet mass; ANT-VII/4; Area; Artedidraco loennbergii; Artedidraco loennbergii, biomass, wet mass; Artedidraco loennbergii, wet mass; Artedidraco orianae; Artedidraco orianae, biomass, wet mass; Artedidraco orianae, wet mass; Artedidraco sp.; Artedidraco sp., biomass, wet mass; Artedidraco sp., wet mass; Bathydraco macrolepis; Bathydraco macrolepis, biomass, wet mass; Bathydraco macrolepis, wet mass; Bathydraco marri; Bathydraco marri, biomass, wet mass; Bathydraco marri, wet mass; Bathydraco scotiae; Bathydraco scotiae, biomass, wet mass; Bathydraco scotiae, wet mass; Bathydraco sp.; Bathydraco sp., biomass, wet mass; Bathydraco sp., wet mass; Bathyraja eatonii; Bathyraja eatonii, biomass, wet mass; Bathyraja eatonii, wet mass; Bathyraja maccaini; Bathyraja maccaini, biomass, wet mass; Bathyraja maccaini, wet mass; Bathyraja sp.; Bathyraja sp., biomass, wet mass; Bathyraja sp., wet mass; Bentho-pelagic trawl; Bottom trawl; BPT; BT; Careproctus continentalis; Careproctus continentalis, biomass, wet mass; Careproctus continentalis, wet mass; Careproctus sp.; Careproctus sp., biomass, wet mass; Careproctus sp., wet mass; Chaenodraco wilsoni; Chaenodraco wilsoni, biomass, wet mass; Chaenodraco wilsoni, wet mass; Channichthys sp.; Channichthys sp., biomass, wet mass; Channichthys sp., wet mass; Chionobathyscus dewitti; Chionobathyscus dewitti, biomass, wet mass; Chionobathyscus dewitti, wet mass; Chionodraco hamatus; Chionodraco hamatus, biomass, wet mass; Chionodraco hamatus, wet mass; Chionodraco myersi; Chionodraco myersi, biomass, wet mass; Chionodraco myersi, wet mass; Cryodraco antarcticus; Cryodraco antarcticus, biomass, wet mass; Cryodraco antarcticus, wet mass; Cygnodraco mawsoni; Cygnodraco mawsoni, biomass, wet mass; Cygnodraco mawsoni, wet mass; Dacodraco hunteri; Dacodraco hunteri, biomass, wet mass; Dacodraco hunteri, wet mass; Date/Time of event; Date/Time of event 2; Depth, bottom/max; Depth, top/min; DEPTH, water; Device type; Dissostichus mawsoni; Dissostichus mawsoni, biomass, wet mass; Dissostichus mawsoni, wet mass; Dolloidraco longedorsalis; Dolloidraco longedorsalis, biomass, wet mass; Dolloidraco longedorsalis, wet mass; Electrona antarctica; Electrona antarctica, biomass, wet mass; Electrona antarctica, wet mass; Elevation of event; Elevation of event 2; Event label; Fish; Fish, biomass, wet mass; Fish, wet mass; Gerlachea australis; Gerlachea australis, biomass, wet mass; Gerlachea australis, wet mass; Gymnodraco acuticeps; Gymnodraco acuticeps, biomass, wet mass; Gymnodraco acuticeps, wet mass; Gymnoscopelus braueri; Gymnoscopelus braueri, biomass, wet mass; Gymnoscopelus braueri, wet mass; Gymnoscopelus opisthopterus; Gymnoscopelus opisthopterus, biomass, wet mass; Gymnoscopelus opisthopterus, wet mass; Latitude of event; Latitude of event 2; Longitude of event; Longitude of event 2; Lycenchelys antarctica; Lycenchelys antarctica, biomass, wet mass; Lycenchelys antarctica, wet mass; Lycenchelys sp.; Lycenchelys sp., biomass, wet mass; Lycenchelys sp., wet mass; Lycodapus pachysoma; Lycodapus pachysoma, biomass, wet mass; Lycodapus pachysoma, wet mass; Lycodichthys antarcticus; Lycodichthys antarcticus, biomass, wet mass; Lycodichthys antarcticus, wet mass; Macrourus holotrachys; Macrourus holotrachys, biomass, wet mass; Macrourus holotrachys, wet mass; Melamphaes microps; Melamphaes microps, biomass, wet mass; Melamphaes microps, wet mass; Muraenolepis sp.; Muraenolepis sp., biomass, wet mass; Muraenolepis sp., wet mass; Neopagetopsis ionah; Neopagetopsis ionah, biomass, wet mass; Neopagetopsis ionah, wet mass; Net, width; Notolepis coatsi; Notolepis coatsi, biomass, wet mass; Notolepis coatsi, wet mass; Nototheniidae; Nototheniidae, biomass, wet mass; Nototheniidae, wet mass; Ophthalmolycus amberensis; Ophthalmolycus amberensis, biomass, wet mass; Ophthalmolycus amberensis, wet mass; Ophthalmolycus bothriocephalus; Ophthalmolycus bothriocephalus, biomass, wet mass; Ophthalmolycus bothriocephalus, wet mass; Pachycara brachycephalum; Pachycara brachycephalum, biomass, wet mass; Pachycara brachycephalum, wet mass; Pagetopsis macropterus; Pagetopsis macropterus, biomass, wet mass; Pagetopsis macropterus, wet mass; Pagetopsis maculatus; Pagetopsis maculatus, biomass, wet mass; Pagetopsis maculatus, wet mass; Pagetopsis sp.; Pagetopsis sp., biomass, wet mass; Pagetopsis sp., wet mass; Paraliparis antarcticus; Paraliparis antarcticus, biomass, wet mass; Paraliparis antarcticus, wet mass; Paraliparis devriesi; Paraliparis devriesi, biomass, wet mass; Paraliparis devriesi, wet mass; Paraliparis leobergi; Paraliparis leobergi, biomass, wet mass; Paraliparis leobergi, wet mass; Paraliparis operculosus; Paraliparis operculosus, biomass, wet mass; Paraliparis operculosus, wet mass; Paraliparis valentinae; Paraliparis valentinae, biomass, wet mass; Paraliparis valentinae, wet mass; Pleuragramma antarcticum; Pleuragramma antarcticum, biomass, wet mass; Pleuragramma antarcticum, wet mass; Pogonophryne immaculata; Pogonophryne immaculata, biomass, wet mass; Pogonophryne immaculata, wet mass; Pogonophryne macropogon; Pogonophryne macropogon, biomass, wet mass; Pogonophryne macropogon, wet mass; Pogonophryne marmorata; Pogonophryne marmorata, biomass, wet mass; Pogonophryne marmorata, wet mass; Pogonophryne mentella; Pogonophryne mentella, biomass, wet mass; Pogonophryne mentella, wet mass; Pogonophryne permitini; Pogonophryne permitini, biomass, wet mass; Pogonophryne permitini, wet mass; Pogonophryne scotti; Pogonophryne scotti, biomass, wet mass; Pogonophryne scotti, wet mass; Pogonophryne sp.; Pogonophryne sp., biomass, wet mass; Pogonophryne sp., wet mass; Polarstern; Prionodraco evansii; Prionodraco evansii, biomass, wet mass; Prionodraco evansii, wet mass; PS14/226; PS14/229; PS14/235; PS14/241; PS14/245; PS14/248; PS14/249; PS14/250; PS14/252; PS14/253; PS14/256; PS14/257; PS14/258; PS14/259; PS14/260; PS14/261; PS14/269; PS14/284; PS14/291; PS14/293; PS14/295; PS14 EPOS I; Racovitzia glacialis; Racovitzia glacialis, biomass, wet mass; Racovitzia glacialis, wet mass; Speed; Trawling distance; Trawling time; Trematomus eulepidotus; Trematomus eulepidotus, biomass, wet mass; Trematomus eulepidotus, wet mass; Trematomus hansoni; Trematomus hansoni, biomass, wet mass; Trematomus hansoni, wet mass; Trematomus lepidorhinus; Trematomus lepidorhinus, biomass, wet mass; Trematomus lepidorhinus, wet mass; Trematomus loennbergii; Trematomus loennbergii, biomass, wet mass; Trematomus loennbergii, wet mass; Trematomus nicolai; Trematomus nicolai, biomass, wet mass; Trematomus nicolai, wet mass; Trematomus pennellii; Trematomus pennellii, biomass, wet mass; Trematomus pennellii, wet mass; Trematomus scotti; Trematomus scotti, biomass, wet mass; Trematomus scotti, wet mass; Trematomus sp.; Trematomus sp., biomass, wet mass; Trematomus sp., wet mass; Weddell Sea
    Type: Dataset
    Format: text/tab-separated-values, 6024 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The factors affecting the number and the mortality rates of seabirds attending long-liners and trawlers fishing in the Kerguelen area were studied during four successive seasons (1994–1997), based on observations carried out onboard by dedicated observers. Twenty-four species of seabirds were observed attending fishing vessels, representing an average of 591 birds/census. The total numbers attending varied mainly according to the year, the cloud cover and the presence of offal from long-liners. The dumping of offal increased the numbers of birds attending the vessel, especially when the offal could be easily handled by birds. The activity of the vessels also affected the numbers attending, birds being more abundant during line setting and trawl hauling. White-chinned petrels were the most abundant ship-following seabirds, followed by black-browed albatrosses, giant petrels and cape petrels. The number of white-chinned petrels, black-browed and grey-headed albatrosses attending fishing vessels increased in the time between spring and autumn, whereas it was the reverse situation for giant petrels and cape petrels. Four species of seabirds were caught by fishing gear, mainly by long-lines: white-chinned petrels, and black-browed, grey-headed and wandering albatrosses. Taking into account the number of birds from each species attending long-liners and known to be potential by-catch, some species appear to be more susceptible to being caught than others. White-chinned and grey-headed albatrosses are caught in much higher proportions than the numbers present, whereas black-browed albatrosses are caught in lower numbers. Giant petrels are abundant around long-liners but were never caught. In long-liners, most birds were killed when the lines were set during the day or when the deployment of the scaring device was not successful, with an overall figure of 0.47 birds/1000 hooks. Only one albatross was caught when the lines were set during the night. White-chinned petrels represented 92.2% of all birds killed by long-liners. The number of birds caught varied significantly among months and among years. The type of bait used also affected the catch rate. The catch rate was related to the number of birds attending the long-liner only for black-browed albatrosses. Most birds killed by trawlers were entangled by the netsonde cable. The efficiency of mitigation measures in order to reduce seabird mortality is discussed and it is stressed that night setting is the most efficient way to reduce mortality and should be enforced everywhere when possible. However, further methods should be developed to reduce the mortality of species active at night, especially white-chinned petrels whose populations in the Indian Ocean may by threatened by long-line fisheries.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Polar biology 13 (1993), S. 193-200 
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Reproductive characteristics of 28 fish species were obtained during EPOS leg 3 in the inner Weddell Sea The gonadosomatic index (GSI) of female notothenioid fish was 15–30% at spawning. GSI in males was much less. Length at first spawning was attained from c. 70% of the maximum total length onwards. As in species of the low-Antarctic Zone gonad maturation was obviously a biennial process. More species in the high-Antarctic Zone spawn in summer and winter than in the low-Antarctic Zone where spawning in autumn/winter prevails. Fecundity was positively correlated with fish length and weight among most species. Fecundity exceeds 10,000 eggs only in a few nototheniid species. Egg diameter is commonly 3.5–5.0 mm with icefish having the largest egg sizes. Eggs of most species are probably left unattended, but nest guarding was suspected in the less fecund species. The results are discussed in comparison to reproduction in notothenioid fish inhabiting the low-Antarctic Zone.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 5
    Publication Date: 2019-07-17
    Description: There has been a significant body of literature on species flock definition but not so much about practical means to appraise them. We here apply the five criteria of Eastman and McCune for detecting species flocks in four taxonomic components of the benthic fauna of the Antarctic shelf: teleost fishes, crinoids (feather stars), echinoids (sea urchins) and crustacean arthropods. Practical limitations led us to prioritize the three historical criteria (endemicity, monophyly, species richness) over the two ecological ones (ecological diversity and habitat dominance). We propose a new protocol which includes an iterative fine-tuning of the monophyly and endemicity criteria in order to discover unsuspected flocks. As a result nine « full » species flocks (fulfilling the five criteria) are briefly described. Eight other flocks fit the three historical criteria but need to be further investigated from the ecological point of view (here called « core flocks »). The approach also shows that some candidate taxonomic components are no species flocks at all. The present study contradicts the paradigm that marine species flocks are rare. The hypothesis according to which the Antarctic shelf acts as a species flocks generator is supported, and the approach indicates paths for further ecological studies and may serve as a starting point to investigate the processes leading to flock-like patterning of biodiversity.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 6
    Publication Date: 2021-04-19
    Description: A longline fishery for Dissostichus eleginoides has recently developed in the vicinity of South Georgia and Kerguelen islands, two internationally important breeding areas for procellariiform birds. The number of hooked birds and a method to reduce mortality were investigated during 13 days of fishing activity in Kerguelen waters in February 1994. Between 100 and 600 seabirds were always observed behind the longline vessel during daytime. The main ship-following species were the white-chinned petrel Procellaria aequinoctialis (67% of counts), giant petrels Macronectes spp. (8%) and the wandering albatross Diomedea exulans (11%), black-browed albatross D. melanophris (6%) and grey-headed albatross D. chrysostoma (2%). Only diving species were caught on the lines, i.e. the white-chinned petrel (n = 36) and the grey-headed albatross (n = 2). Marked differences in the mortality rate were observed between day and night (1·00 versus 0·38 birds per 1000 hooks), and at night when the decklights were on or off (0·59 versus 0·15 birds per 1000 hooks). Dumping of homogenized offal during line settings greatly reduced incidental capture of seabirds, mainly because birds were more attracted by offal than by hooked baits. We therefore propose that the dumping of offal during line settings should be included in the regulations of the longline fishery for Dissostichus in order to minimize seabird mortality.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 7
    facet.materialart.
    Unknown
    InterResearch
    In:  Marine Ecology Progress Series, 266 . pp. 143-156.
    Publication Date: 2021-07-14
    Description: Using top predators as biological samplers, we collected information on the poorly known‹but ecologically important‹cephalopod fauna of the Southern Ocean. A total of 4527 cephalopod beaks were identified from stomach contents of Patagonian toothfish caught in slope waters at Crozet and Kerguelen Islands (Indian Ocean). Main prey were the squid Gonatus antarcticus and Kondakovia longimana at both localities, Taonius sp. B (Voss) and Slosarczykovia circumantarctica at Crozet, and Chiroteuthis veranyi and Mastigoteuthis psychrophila at Kerguelen. Fish diet together with the feeding habits of sharks and seabirds show that at least 36 and 38 different cephalopod species inhabit Crozet and Kerguelen waters, respectively. Oegopsid squid dominate the assemblages (29 and 32 taxa at Crozet and Kerguelen, respectively) over octopods (7 and 5 taxa), 1 species of sepiolid occurring at Kerguelen. These rich communities include pelagic squid, bentho-pelagic cirrate octopods and a few endemic benthic octopodids. The results emphasize the importance of onychoteuthids and gonatids in the nutrition of top consumers in the Southern Ocean and they shed new light on the role of chiroteuthids, mastigoteuthids and cirrate octopods in the trophic web of the marine ecosystems.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 8
    facet.materialart.
    Unknown
    Elsevier
    In:  Deep Sea Research Part I: Oceanographic Research Papers, 51 (1). pp. 17-31.
    Publication Date: 2021-07-14
    Description: Only five species of sharks have been recorded in the Southern Ocean, where their biology is essentially unknown. We investigated the feeding habits of the three commonest species from stomach content analysis of specimens taken as bycatches of the fishery targeting the Patagonian toothfish (Dissostichus eleginoides) in upper slope waters of the Kerguelen Archipelago. The three species prey upon a diversity of fishes and cephalopods. They segregate by feeding on different species of squids of different sizes. The small lanternsharks (Etmopterus cf. granulosus; 0.3 m on average) feed on small-sized Mastigoteuthis psychrophila, while the large porbeagles (Lamna nasus; 1.9 m) feed on small-sized histioteuthids (Histioteuthis atlantica and H. eltaninae) and on medium-sized juvenile ommastrephids of the genus Todarodes. Finally, the huge sleeper sharks (Somniosus cf. microcephalus; 3.9 m) prey upon large-sized cephalopods (Kondakovia longimana and Taningia danae) and giant squids (Mesonychoteuthis hamiltoni and Architeuthis dux). Thus sleeper shark is a fish with sperm whale-like feeding habits and, hence, the second top predator known to science to rely significantly on giant squids. Prey species and biology indicate that porbeagles are pelagic predators in the entire water column, while sleeper sharks are mainly benthic top predators and scavengers. The present study also underlines the diversity and biomass of the poorly known cephalopod fauna, including giant squids, occurring in outer shelf and upper slope waters surrounding subantarctic islands.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 9
    facet.materialart.
    Unknown
    InterResearch
    In:  Marine Ecology Progress Series, 250 . pp. 197-203.
    Publication Date: 2021-07-02
    Description: The diet of the onychoteuthid squid Moroteuthis ingens was investigated through stomach content analyses of 72 individuals collected aboard a trawler targeting Patagonian toothfish Dissostichus eleginoides in the upper slope waters of the Kerguelen Archipelago. M. ingens is primarily piscivorous (67% by number and 87% by reconstituted mass), although the diet also includes squids (12 and 12%, respectively) and crustaceans (21 and 〈1%, respectively). The main fish prey were the paralepidid Arctozenus risso (28% by reconstituted mass), the gempylid Paradiplospinus gracilis (24%) and various myctophids. M. ingens preyed also upon conspecifics (cannibalism, 6%), and the euphausiid Euphausia triacantha was the main crustacean item. Most of the prey are pelagic organisms performing diurnal migration, suggesting that the benthopelagic M. ingens catch them when they are near the bottom during the day. In turn, M. ingens is a prey for several species of top predators, including D. eleginoides and air-breathing vertebrates. M. ingens thus contributes to carbon export from the pelagic environment to the benthos and from the ocean to the atmosphere as carbon dioxide expired by birds and mammals.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 10
    Publication Date: 2018-03-21
    Description: In the Atlantic sector of the Southern Ocean, data from vertebrate predators and commercial fisheries suggests that the distribution of the ommast rephid squid Martialia hyadesi is related to the Antarctic Polar Frontal Zone, but it spreads further to the north in some years (Rodhouse, in press). A mass stranding of M. hyadesi occurred on Macquarie Island in 1971 (O'Sullivan et al. 1983) suggesting that its distribution is c ircumpolar (Rodhouse and Yeatman 1990). However, apart from a single beak collected from the s tomach of a wandering albatross at Mar ion Island (Imber and Berruti 1981) its presence has not, until now, been confirmed in the Indian Ocean sector and in particular it is not included in the list of cephalopods from the Kerguelenian Province (Lu and Mangold 1978). M. hyadesi is a major prey item of the grey-headed albatross, Diomedea chrysostoma, and the southern elephant seal, Mirounoa leonina, at South Georgia (Rodhouse et al. 1990; Rodhouse et al., unpublished data) and is present in the diet o f several other predators in the Scotia Sea area including the wandering albatross, Diomedea exulans (Rodhouse et al. 1987) and the giant petrels, Macronectes halli and M. gioanteus (Hunter 1983). It occasionally occurs as a significant by-catch in the lllex argentinus fishery on the Pa tagonian Shelf and has been taken during commercial squid jigging trials in the Scotia Sea at the Antarctic Polar Frontal Zone (Rodhouse, in press). It appears to have potential for commercial exploitation in the sub-Antarctic waters of the Atlantic sector of the Southern Ocean (Rodhouse 1990). In view of the ecological importance of M. hyadesi to Antarctic predators, and the likelihood that it will be commercially exploited in the future, it is important to thoroughly establish its geographical range, and in particular to confirm its circumpolar distribution.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...