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  • Other Sources  (17)
  • Taylor & Francis  (10)
  • Nature Publishing Group  (7)
  • American Chemical Society
  • American Meteorological Society
  • PANGAEA
  • 1985-1989  (17)
  • 1965-1969
  • 1988  (14)
  • 1985  (3)
Collection
Source
Publisher
Years
  • 1985-1989  (17)
  • 1965-1969
Year
  • 1
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    PREY OF NORTHERN ROCKHOPPER PENGUINS AT GOUGH ISLAND, SOUTH ATLANTIC OCEAN (1988)
    Taylor & Francis
    In:  Ostrich, 59 (4). pp. 162-165.
    Details
    Publication Date: 2020-06-15
    Description: The diet of Northern Rockhopper Penguins Eudyptes chrysocome moseleyi breeding on Gough Island, south Atlantic Ocean was studied, during November 1984, 1985 and 1986 by stomach content analysis. Rockhopper Penguins fed chiefly on the euphausiids Thysanoessa gregaria, Euphausia lucens and E. similis. Fish and squid were of minor importance by mass but constituted the largest individual prey items.
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  • 2
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    Aspects of natural foraging bySepietta oweniana(Mollusca, Cephalopoda) (1985)
    Taylor & Francis
    In:  Ophelia, 24 (1). pp. 65-74.
    Details
    Publication Date: 2020-06-15
    Description: The feeding biology of the nectobenthic, sepiolid squid, Sepietta oweniana is treated based on behavioural observations in aquaria and stomach content analyses on 859 trawl caught squid. Juvenile squid in aquaria catch free-swimming prey, preferably the mysid Praunus flexuosus, day and night using the bottom only for shorter resting periods. Adult squid forage from dusk till dawn from positions close to the bottom and spend the day buried in the bottom. Praunus flexuosus is preferred as prey in comparison with demersal and benthic crustaceans as Palaemon elegans and Crangon crangon. Stomach analyses show that in daytime catches, only 16% of all analyzed specimens had stomach contents. Low frequencies were consistent throughout most sampled months in 1979 and 1982. Of the specimens with stomach contents most (50–100%) contained fragments of the euphausiid Meganyctiphanes norvegica. Specimens with remains of decapod shrimps were found in late spring and early summer. It is concluded that S. oweniana feeds in the hyperbenthic habitat at very low light intensities mostly on Meganyctiphanes norvegica in northern waters. A tentative ecological trade off explanation for this apparently inefficient feeding pattern is briefly discussed.
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  • 3
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    Diet of the Imperial Cormorant Phalacrocorax atricepsat sub-Antarctic Marion Island (1988)
    Taylor & Francis
    In:  Emu, 88 (1). pp. 43-46.
    Details
    Publication Date: 2020-07-30
    Description: The Imperial Cormorant Phalacrocorax atriceps is an inshore foraging, diving seabird (Cooper 1985) distributed throughout the southern hemisphere south of 45°S (Watson 1975). A brief description of the diet of the Imperial Cormorant at Marion Island has been published (Blankley 1981). We present here a more comprehensive report based on food samples collected throughout the year.
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  • 4
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    Crustal scale extension in a convergent orogen: The Sterzing-Steinach mylonite zone in the eastern Alps (1988)
    Taylor & Francis
    In:  Geodinamica Acta, 2 (2). pp. 63-73.
    Details
    Publication Date: 2017-05-16
    Description: The western margin of the Tauera Window (Eastern Alps) is defined by a low angle westward dipping fault zone of potently We disp lacement. Ductile deformation of the fault rocks results in a carpet of mylonites up to 400 metres thick. Evidence from shear criteria and the excision of part of the Cretaceous-Tertiary metamorphic edifice both indicate normal displacements, and relative movement of Austroalpine nappe complex towards the west. The Sterzing-Steinach mylonite zone overprints the Alpine nappe edifice. Movements occurred on the cooling path of the Tauern metamorphism, and may be as recent as Middle Miocene. The Kinematics and geometry of the mylonite zone constrain two likely t ectonic explanations that are both compatible with secondary thining of a thick orogenic wedge. (1) Ute the Austroalpine nappe pile due to tectonic unroofing of the Tauern window. (2) Continental escape by east-west stretching of the Alpine orogenic wedge in response to continental collision.
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  • 5
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    Anatomy and composition of Zostera Marina L.: A potential new crop (1988)
    Taylor & Francis
    In:  Ecology of Food and Nutrition, 20 (4). pp. 263-274.
    Details
    Publication Date: 2020-07-30
    Description: Chemical composition of Zostera marina L. seed and shoots was determined. Morphology and histochemistry of mature seeds were studied by fluorescence, brightfield and scanning electron microscopy to locate storage constituents in the seed. Starch content in the mature seed was 51% and was the major storage reserve in the embryo and a minor component in the testa. Starch in the shoots ranged from 0.3 to 2.3%. Protein, located in the embryo as small protein bodies, comprised about 9.0% of the seed. Protein in shoots ranged from 6–15%. Protein quality of both seeds and shoots resembled corn in composition, and the first limiting amino acid was lysine. Shoots were high in minerals, fiber and ash, while seeds were lower in these constituents. Fat was low (0.3–1.7%) in both shoots and seeds.
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  • 6
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    Anomalous 13C enrichment in modern marine organic carbon (1985)
    Nature Publishing Group
    In:  Nature, 315 (6016). pp. 216-218.
    Details
    Publication Date: 2016-10-26
    Description: Marine organic carbon is heavier isotopically (13C enriched) than most land-plant or terrestrial organic C1. Accordingly, δ 13C values of organic C in modern marine sediments are routinely interpreted in terms of the relative proportions of marine and terrestrial sources of the preserved organic matter2,3. When independent geochemical techniques are used to evaluate the source of organic matter in Cretaceous or older rocks, those rocks containing mostly marine organic C are found typically to have lighter (more-negative) δ 13C values than rocks containing mostly terrestrial organic C. Here we conclude that marine photosynthesis in mid-Cretaceous and earlier oceans generally resulted in a greater fractionation of C isotopes and produced organic C having lighter δ 13C values. Modern marine photosynthesis may be occurring under unusual geological conditions (higher oceanic primary production rates, lower P CO2) that limit dissolved CO2 availability and minimize carbon isotope fractionation4.
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  • 7
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    Does the ocean–atmosphere system have more than one stable mode of operation? (1985)
    Nature Publishing Group
    In:  Nature, 315 (6014). pp. 21-26.
    Details
    Publication Date: 2016-06-10
    Description: The climate record obtained from two long Greenland ice cores reveals several brief climate oscillations during glacial time. The most recent of these oscillations, also found in continental pollen records, has greatest impact in the area under the meteorological influence of the northern Atlantic, but none in the United States. This suggests that these oscillations are caused by fluctuations in the formation rate of deep water in the northern Atlantic. As the present production of deep water in this area is driven by an excess of evaporation over precipitation and continental runoff, atmospheric water transport may be an important element in climate change. Changes in the production rate of deep water in this sector of the ocean may push the climate system from one quasi-stable mode of operation to another.
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  • 8
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    New evidence from the South China Sea for an abrupt termination of the last glacial period (1988)
    Nature Publishing Group
    In:  Nature, 333 (6169). pp. 156-158.
    Details
    Publication Date: 2016-06-10
    Description: Abrupt changes in climatic conditions have been seen at high latitudes in the North Atlantic and the Antarctic at 13 kyr BP. It is important to determine whether this abrupt change was confined to high-latitude regions or whether it was global. Here we present results demonstrating an abrupt change in the rate and character of sedimentation in the South China Sea at the close of the last glacial period. Radiocarbon dating and its position in the oxygen isotope shift suggest that this change may be coincident with the changes found at high latitudes.
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  • 9
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    New evidence from the South China Sea for an abrupt termination of the last glacial period (1988)
    Nature Publishing Group
    In:  Nature, 333 (6169). pp. 156-158.
    Details
    Publication Date: 2016-06-15
    Description: Abrupt changes in climatic conditions have been seen at high latitudes in the North Atlantic1 and the Antarctic2,3 at 13 kyr BP. It is important to determine whether this abrupt change was confined to high-latitude regions or whether it was global. Here we present results demonstrating an abrupt change in the rate and character of sedimentation in the South China Sea at the close of the last glacial period. Radiocarbon dating and its position in the oxygen isotope shift suggest that this change may be coincident with the changes found at high latitudes.
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  • 10
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    Geochemical and climatic effects of increased marine organic carbon burial at the Cenomanian/Turonian boundary (1988)
    Nature Publishing Group
    In:  Nature, 335 (6192). pp. 714-717.
    Details
    Publication Date: 2016-10-24
    Description: Perhaps the most significant event in the Cretaceous record of the carbon isotope composition of carbonate1,2, other than the 1–2.5 ‰ negative shift in the carbon isotope composition of calcareous plankton at the Cretaceous/Tertiary boundary3, is the rapid global positive excursion of ~2 ‰ (13C enrichment) which took place between ~91.5 Myr and 90.3 Myr (late Cenomanian to earliest Turonian (C/T boundary event))1,4,5. This excursion has been attributed to a change in the isotope composition of the marine total dissolved carbon (TDC) reservoir resulting from an increase in rate of burial of 13C-depleted organic carbon, which coincided with a major global rise in sea level5 during the so-called C/T oceanic anoxic event (OAE)6. Here we present new data, from nine localities, which demonstrate that a positive excursion in the carbon isotope composition of organic carbon at or near the C/T boundary7,8 is nearly synchronous with that for carbonate and is widespread throughout the Tethys and Atlantic basins (Fig. 1), as well as in more high-latitude epicontinental seas. The postulated increase in the rate of burial of organic carbon may have had a significant effect on CO2 and O2 concentrations in the oceans and atmosphere, and consequent effects on global climate and sedimentary facies.
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  • 11
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    Food of the squid Ommastrephes bartramii (Lesueur, 1821) from the South-West Atlantic Ocean (1988)
    Taylor & Francis
    In:  South African Journal of Marine Science, 6 (1). pp. 43-46.
    Details
    Publication Date: 2020-05-26
    Description: The diet of Ommastrephes bartramii (Lesueur, 1821) was determined by analysing the stomach contents of 73 squid caught in the South-West Atlantic Ocean. There were three main prey groups, Cephalopoda (in 82% of the squid stomachs), Osteichthyes (34%) and Crustacea (18%). Cannibalism was common. Squid of the families Histioteuthidae and Enoploteuthidae and other teuthoids were less frequent in the diet. The fish prey was predominantly Myctophidae, of various species. The bulk of the prey was mesopelagic species that migrate into the epipelagic layers at night.
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  • 12
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    Predatory strategies of squid (Illex illecebrosus) attacking small and large fish (1988)
    Taylor & Francis
    In:  Marine Behaviour and Physiology, 13 (2). pp. 155-168.
    Details
    Publication Date: 2020-07-14
    Description: Feeding strategies are different when adult Illex illecebrosus prey on large (trout) and small fish (mummichogs). Attacks on trout are characterized by (1) rotation as the squid changes from tail‐first to head‐first swimming; (2) an approach phase involving rapid acceleration towards the prey; (3) a tracking phase where the squid slowly follows the trout; (4) the capture phase. No tracking phase is present in attacks on mummichogs. These differences in feeding strategies can be explained by performance limitations of the squid jet propulsion system. Head‐first acceleration rates in Illex are low (max. = 12 m • s−2) and maneuverability poor compared to fish. A large fish could thus out‐perform an attacking squid if forced into evasive action. The tracking phase is a type of oceanic stalking strategy designed to bring the squid into close proximity to larger fish. The behaviour is not necessary when attacking small fish due to their low swimming speeds.
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  • 13
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    Oxygen consumption and ammonia excretion rates in Octopus maya, loligo forbesi and Lolliguncula brevis(Mollusca: Cephalopoda) (1988)
    Taylor & Francis
    In:  Marine Behaviour and Physiology, 13 (4). pp. 389-400.
    Details
    Publication Date: 2020-07-14
    Description: Oxygen consumption and ammonia excretion rates were investigated in young Octopus maya (hatching to 139 days old; 0.11–81.23 g wet body weight, BW; 22.5–23.9°C), young squids of Loligo forbesi (hatching to 45 days old; 9.4–115.3 mg BW; 12.3–13.1°C) and young squids of Lolliguncula brevis (2.00–39.98 g BW; 23.8–24.7°C). Except at hatching, oxygen consumption and ammonia excretion rates on an individual basis (M) of these three cephalopods increased linearly with increasing body weight (BW) expressed as M = aBWb . Values of b for oxygen consumption were 0.900, 0.910 and 0.848 and for ammonia excretion were 0.744, 0.809 and 0.751 for O. maya, L. forbesi and L. brevis, respectively. Among the three species the value a varied widely, while b was similar for both oxygen consumption and ammonia excretion rates. Based upon these data, metabolism for hatchlings of O. maya and L. forbesi was estimated to be relatively lower than that of older juveniles. The O/N ratios for hatchlings of O. maya and L. forbesi were relatively high and indicate an apparent dependence upon lipids in the immediate post‐hatching period, followed by standard protein energy utilization thereafter.
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  • 14
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    Gold and native copper in supergene sulfides from the Mid-Atlantic Ridge (1988)
    Nature Publishing Group
    In:  Nature, 333 (6168). pp. 64-66.
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    Publication Date: 2014-04-25
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  • 15
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    Scaeurgus unicirrhus (Orbigny, 1840) (Cephalopoda, Octopodidae): first record from the South-East Atlantic (1988)
    Taylor & Francis
    In:  South African Journal of Marine Science, 7 (1). pp. 69-74.
    Details
    Publication Date: 2021-05-04
    Description: The first recorded specimens of Scaeurgus unicirrhus from the South-East Atlantic are described. Five males and two females were captured on the Valdivia Bank, Walvis Ridge, between 24 and 27°S, 400 miles off the Namibian coast. They are compared with specimens caught from other areas, and historical and geographic surveys of the species are made.
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  • 16
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    Does nutrient competition among phytoplankton occur in situ? (1988)
    Taylor & Francis
    In:  Verhandlungen / Internationale Vereinigung für Theoretische und Angewandte Limnologie, 23 (2). pp. 707-712.
    Details
    Publication Date: 2020-05-27
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  • 17
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    Effects of microbe activity (1988)
    Nature Publishing Group
    In:  Nature, 333 (6168). pp. 17-18.
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    Publication Date: 2019-05-06
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