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  • PANGAEA  (69)
  • Springer  (9)
  • Elsevier ACADEMIC PRESS INC  (2)
Publikationsart
Schlagwörter
Verlag/Herausgeber
Erscheinungszeitraum
  • 1
    Digitale Medien
    Digitale Medien
    Interactions in soft bottom benthic communities: Quantitative aspects of behaviour in the surface deposit feedersPygospio elegans (Polychaeta) andMacoma balthica (Bivalvia) (1991)
    Springer
    Helgoland marine research 45 (1991), S. 301-316 
    Details
    ISSN: 1438-3888
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The surface deposit feeding speciesPygospio elegans andMacoma balthica are dominant members of many sandy bottom communities of northern boreal regions. The feeding mode of both species and the tube-building ofP. elegans are assumed to affect community structure by interactions with other species. The weight of tubes ofP. elegans varied between 2 and 13 g DW/100 cm2 at the two stations investigated and during the year, which is equivalent to 230–1500 cm of tubes per 100 cm2 of sediment surface. Sediment stability may be affected directly or indirectly by the amount of tubes present.M. balthica shows a linear relation between the maximum size of particles which can be inhaled and animal length. In Kiel Bay, particles〉0.5 mm are out of the range of this species. In summer, the potential feeding area (PFA) of aP. elegans population at one station in Kiel Bay was 1.8 times the available surface area. The PFA of three different populations ofM. balthica in Kiel Bay exceeded the available surface area by factors of 2.6, 2.7, and 3.2. These findings indicate strong intra- and interspecific competition for food. Additionally, the feeding of both species may strongly affect the recruitment of benthic species via pelagic larvae. Experiments are proposed to evaluate the significance of the investigated behavioural aspects for community structure.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02365522
    Standort Signatur Einschränkungen Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 2
    Digitale Medien
    Digitale Medien
    Lissarca notorcadensis (Bivalvia: Philobryidae) living on Notocidaris sp. (Echinoidea: Cidaridae): Population dynamics in limited space (1993)
    Springer
    Polar biology 13 (1993), S. 89-95 
    Details
    ISSN: 1432-2056
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary Population dynamics of the epizoic bivalve Lissarca notorcadensis living on spines of cidaroid sea urchins in the Weddell Sea were investigated. Total production (somatic & gonad) of the suspension feeding bivalve ranged between 16.5 and 487.4 mg AFDM y−1 per sea urchin. Annual sedimentation rates are not sufficient to maintain the production of the Lissarca sub-populations carried by the sea urchins, and resuspension of organic matter is most likely to be an important food source. The ratio of the number of freshly settled juveniles to the number of embryos brooded is between 0.054 and 0.207 and seems negatively related to the biomass already present, indicating intraspecific competition for space. Interspecific competition for space is caused by the strong preference of L. notorcadensis as well as other epizoa (colonial anthozoans and bryozoans) for the spines located on the aboral hemispere of the sea urchins.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00238540
    Standort Signatur Einschränkungen Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    The genus Sterechinm (Echinodermata: Echinoidea) on the Weddell Sea shelf and slope (Antarctica): distribution, abundance and biomass (1991)
    Springer
    Polar biology 11 (1991), S. 227-232 
    Details
    ISSN: 1432-2056
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary Two species of the echinoid genus Sterechinus were documented from 92 trawl stations and 55 photographic stations in the eastern and southern Weddell Sea between 100 and 1200 m water depth. We found two species occuring along the whole shelf and slope, S. neumayeri being more abundant above 450 m water depth and S. antarcticus dominating the deeper regions. The size-frequency distributions of both species indicate differences in growth, mortality and longevity. First estimates of abundance and biomass of S. neumayeri and S. antarcticus are 0.085 ind/m2 & 0.005 gAFDW/m2 and 0.022 ind/m2 & 0.005 gAFDW/m2, respectively.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00238455
    Standort Signatur Einschränkungen Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 4
    Digitale Medien
    Digitale Medien
    Stable isotopes prove shell growth bands in the Antarctic bivalve Laternula elliptica to be formed annually (1997)
    Springer
    Polar biology 17 (1997), S. 465-468 
    Details
    ISSN: 1432-2056
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Growth marks in calcareous shells or skeleton parts of benthic invertebrates are often assumed to be formed annually and hence are used for ageing purposes. For some Antarctic species this assumption has been validated by tagging experiments or direct monitoring of growth throughout the year. Here we use the record of stable isotope ratios (δ18O and δ13C) deposited in shell carbonate of Laternula elliptica from King George Island to demonstrate that shell growth bands are formed annually in this species.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s003000050143
    Standort Signatur Einschränkungen Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 5
    Digitale Medien
    Digitale Medien
    A seminal study of the dynamics of a mudskipper (Periophthalmus papilio) population in the Cross River, Nigeria (1996)
    Springer
    Aquatic ecology 30 (1996), S. 41-48 
    Details
    ISSN: 1573-5125
    Schlagwort(e): Population dynamics ; mudskipper ; Periophthalmus papilio ; Cross River ; Nigeria
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract A seminal study was conducted in which the population dynamics (growth, mortality and recruitment) of the mudskipper (Periophthalmus papilio) in the Cross River, Nigeria, was elucidated for the first time using length frequency data and the ELEFAN software. The allometric relationship was: Weight=0.012(Length)2.940, n=415, r2=0.939, P 〈0.0005. The seasonalized Von Bertalanffy growth parameters were L∞=19.39 cm, K=0.51 y−1, C=0.3, and WP=0.4. The instantaneous total mortality coefficient Z was 2.208 y−1 while the instantaneous natural mortality coefficient was 1.341 y−1. The instantaneous fishing mortality coefficient of 0.867 y−1 yielded the expectedly low exploitation rate E of 0.393. Our estimate shows that the species could reach an average maximum life span of about 6 years in the Cross River system. These results are used in quantitative elucidation of the state of exploitation of the population and will serve as input for the proper and scientific management of the fish resource.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02092146
    Standort Signatur Einschränkungen Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 6
    facet.materialart.
    Unbekannt
    Impact of ocean acidification on escape performance of the king scallop, Pecten maximus, from Norway (2013)
    Springer
    In:  Marine Biology, 160 (8). pp. 1995-2006.
    Details
    Publikationsdatum: 2014-09-01
    Beschreibung: The ongoing process of ocean acidification already affects marine life, and according to the concept of oxygen and capacity limitation of thermal tolerance, these effects may be intensified at the borders of the thermal tolerance window. We studied the effects of elevated CO2 concentrations on clapping performance and energy metabolism of the commercially important scallop Pecten maximus. Individuals were exposed for at least 30 days to 4 °C (winter) or to 10 °C (spring/summer) at either ambient (0.04 kPa, normocapnia) or predicted future PCO2 levels (0.11 kPa, hypercapnia). Cold-exposed (4 °C) groups revealed thermal stress exacerbated by PCO2 indicated by a high mortality overall and its increase from 55 % under normocapnia to 90 % under hypercapnia. We therefore excluded the 4 °C groups from further experimentation. Scallops at 10 °C showed impaired clapping performance following hypercapnic exposure. Force production was significantly reduced although the number of claps was unchanged between normocapnia- and hypercapnia-exposed scallops. The difference between maximal and resting metabolic rate (aerobic scope) of the hypercapnic scallops was significantly reduced compared with normocapnic animals, indicating a reduction in net aerobic scope. Our data confirm that ocean acidification narrows the thermal tolerance range of scallops resulting in elevated vulnerability to temperature extremes and impairs the animal’s performance capacity with potentially detrimental consequences for its fitness and survival in the ocean of tomorrow.
    Materialart: Article , PeerReviewed
    Format: text
    DOI: 10.1007/s00227-012-2057-8
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 7
    facet.materialart.
    Unbekannt
    Investigation of escape response of Norwegian Pecten maximus
    PANGAEA
    In:  Supplement to: Schalkhausser, Burgel; Bock, Christian; Stemmer, Kristina; Brey, Thomas; Pörtner, Hans-Otto; Lannig, Gisela (2013): Impact of ocean acidification on escape performance of the king scallop, Pecten maximus, from Norway. Marine Biology, 160(8), 1995-2006, https://doi.org/10.1007/s00227-012-2057-8
    Details
    Publikationsdatum: 2023-05-12
    Beschreibung: The ongoing process of ocean acidification already affects marine life and, according to the concept of oxygen- and capacity limitation of thermal tolerance (OCLTT), these effects may be exacerbated at the boarders of the thermal tolerance window. We studied the effects of elevated CO2 concentrations on clapping performance and energy metabolism of the commercially important scallop Pecten maximus. Individuals were exposed for at least 30 days to 4°C (winter) or to 10°C (spring/summer) at either ambient (0.04 kPa, normocapnia) or predicted future PCO2 levels (0.11 kPa, hypercapnia). Cold (4°C) exposed groups revealed thermal stress exacerbated by PCO2 indicated by a high mortality overall and its increase from 55% under normocapnia to 90% under hypercapnia. We therefore excluded the 4°C groups from further experimentation. Scallops at 10°C showed impaired clapping performance following hypercapnic exposure. Force production was significantly reduced although the number of claps was unchanged between normo- and hypercapnia exposed scallops. The difference between maximal and resting metabolic rate (aerobic scope) of the hypercapnic scallops was significantly reduced compared to normocapnic animals, indicating a reduction in net aerobic scope. Our data confirm that ocean acidification narrows the thermal tolerance range of scallops resulting in elevated vulnerability to temperature extremes and impairs the animal's performance capacity with potentially detrimental consequences for its fitness and survival in the ocean of tomorrow.
    Schlagwort(e): BIOACID; Biological Impacts of Ocean Acidification
    Materialart: Dataset
    Format: application/zip, 5 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 8
    facet.materialart.
    Unbekannt
    Abundance records of the five most abundant brittle star species (Ophiuroidea) from trawl, grab and trap samples in the Weddell Sea and neighbouring seas during POLARSTERN cruises ANT-I/2, ANT-II/4, ANT-V/3-4, ANT-VI/3, ANT-IX/3 and ANT-X/3 (2019)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publikationsdatum: 2023-04-21
    Beschreibung: The dataset comprises a total of 540 records of abundance of Astrotoma agassizii Lyman, 1875, Ophionotus victoriae (Bell, 1902), Ophioplinthus brevirima (Mortensen, 1936), Ophioplinthus gelida (Koehler, 1901) and Ophioplocus incipiens (Koehler, 1922) from 106 trawl samples (Agassiz trawl, bottom trawl, dredge) and two others (multi-box corer, weir basket). The dataset was collected on the shelf and slope of the Antarctic Weddell Sea and Lazarev Sea (depth range: 130 - 970 m) during "Polarstern" cruises ANT I/2 (1983), ANT II/4 (1983/84), ANT V/3 and 4 (1986/87), ANT VI/3 (1987/88), ANT IX/3 (1990/91) and ANT X/3 (1992).
    Schlagwort(e): Agassiz Trawl; AGT; ANT-I/2; ANT-II/4; ANT-IX/3; ANT-V/3; ANT-V/4; ANT-VI/3; ANT-X/3; Area; Astrotoma agassizii; Bottom trawl; BT; Campaign; DATE/TIME; DEPTH, water; Dredge; DRG; Event label; FTS; Gear; Height; LATITUDE; Lazarev Sea; Length; LONGITUDE; Mesh size; MG; MULT; Multiboxcorer; Multiple investigations; Ophionotus victoriae; Ophioplinthus brevirima; Ophioplinthus gelida; Ophioplocus incipiens; Photo sledge; Polarstern; Project; PS01; PS01/128; PS01/132; PS01/135; PS01/147; PS01/149; PS01/153; PS01/161; PS01/168; PS01/180; PS01/192; PS01/195; PS01/196; PS01/198; PS01/207; PS01/210; PS01/213; PS01/216; PS01/220; PS04; PS04/303; PS04/308; PS04/310; PS04/341; PS04/369; PS04/372; PS04/378; PS04/386; PS04/417; PS04/428; PS04/438; PS04/450; PS04/460; PS04/470; PS04/474; PS04/480; PS04/490; PS04/492; PS04/506; PS04/510; PS04/524; PS10; PS10/508-2; PS10/517-2; PS10/520-6; PS10/522-1; PS10/523-2; PS10/527-2; PS10/531-1; PS10/536-1; PS10/537-1; PS10/553-2; PS10/561-4; PS10/566-4; PS10/571-4; PS10/575-4; PS10/580-3; PS10/584-9; PS10/585-2; PS10/589-3; PS10/590-3; PS10/592-3; PS10/593-1; PS10/594-3; PS10/615-3; PS10/618-9; PS10/627-6; PS10/672-2; PS10/692; PS10/704; PS10/738; PS10/796; PS10 WWSP86; PS12; PS12/266-2; PS12/298; PS12/314; PS12/323; PS12/333-2; PS12/342; PS12/346; PS12/384; PS12/387; PS12/396; PS12/396-2; PS12/418; PS12/437; PS12/512; PS18; PS18/123-1; PS18/123-2; PS18/129-1; PS18/133-1; PS18/135-2; PS18/158-1; PS18/160-2; PS18/162-1; PS18/165-2; PS18/168-1; PS18/169-1; PS18/171-2; PS18/173-1; PS18/174-1; PS18/176-1; PS18/179-1; PS18/180-3; PS18/192-2; PS18/206-1; PS18/207-2; PS18/211-1; PS18/212-8; PS18/220-1; PS21; PS21/352; PS21/432; Sample ID; Ship speed; South Atlantic Ocean; Station label; Trawling distance; Trawling time; Weddell Sea; Width
    Materialart: Dataset
    Format: text/tab-separated-values, 1723 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 9
    facet.materialart.
    Unbekannt
    Abundance and biomass records of two sea urchin species (Sterechinus antarcticus, S. neumayeri) from trawls, grabs, traps and photographs in the Weddell Sea during POLARSTERN cruises ANT-I/2, ANT-II/4, ANT-III/3, ANT-V/3-4, ANT-VI/3 and ANT-VII/4 (2019)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publikationsdatum: 2023-04-21
    Beschreibung: The dataset comprises a total of 336 records of abundance and biomass of two sea urchin species, Sterechinus antarcticus Koehler, 1901 and Sterechinus neumayeri (Meissner, 1900), from 67 trawls (Agassiz trawl, bottom trawl or dredge), 56 photo sessions (see doi link to photographs in dataset) and three other samples (multi-box corer, giant box corer, weir basket). The data were collected on the eastern and southern shelf and slope of the Antarctic Weddell Sea (depth range: 97 - 1243 m) during "Polarstern" cruises ANT I/2 (1983), ANT II/4 (1984), ANT III/3 (1985), ANT V/3 (1986), ANT V/4 (1987), ANT VI/3 (1988) and ANT VII/4 (1989).
    Schlagwort(e): Agassiz Trawl; AGT; ANT-I/2; ANT-II/4; ANT-III/3; ANT-V/3; ANT-V/4; ANT-VI/3; ANT-VII/4; Area; Bentho-pelagic trawl; Bottom trawl; BPT; BT; Campaign; Date; DEPTH, water; Dredge; DRG; Event label; FTS; Gear; Height; LATITUDE; Length; LONGITUDE; Mesh size; MG; MULT; Multiboxcorer; Multiple investigations; Number of photos; Photo sledge; Polarstern; Project; PS01; PS01/126; PS01/128; PS01/129; PS01/135; PS01/147; PS01/149; PS01/153; PS01/168; PS01/180; PS01/192; PS01/194; PS01/195; PS01/196; PS01/198; PS01/207; PS01/210; PS01/213; PS01/216; PS01/220; PS04; PS04/303; PS04/308; PS04/310; PS04/342; PS04/369; PS04/372; PS04/378; PS04/386; PS04/417; PS04/428; PS04/438; PS04/450; PS04/460; PS04/470; PS04/474; PS04/480; PS04/490; PS04/492; PS04/502; PS04/506; PS04/510; PS04/521; PS04/524; PS06/275; PS06/288; PS06/289; PS06/290; PS06/292; PS06/301; PS06/302; PS06/303; PS06/307; PS06/309; PS06/310; PS06/311; PS06/329; PS06/330; PS06/335; PS06/336; PS06/345; PS06/348; PS06/357; PS06/358; PS06 SIBEX; PS10; PS10/508-2; PS10/517-2; PS10/520-6; PS10/528-2; PS10/531-1; PS10/536-1; PS10/537-1; PS10/553-2; PS10/575-4; PS10/580-3; PS10/584-9; PS10/585-2; PS10/592-3; PS10/593-1; PS10/615-3; PS10/618-9; PS10/692; PS10/704; PS10/738; PS10 WWSP86; PS12; PS12/298; PS12/314; PS12/323; PS12/342; PS12/346; PS12/348-1; PS12/354; PS12/354-1; PS12/366; PS12/368; PS12/372; PS12/374; PS12/376; PS12/378; PS12/380; PS12/384; PS12/387; PS12/396; PS12/396-2; PS12/471-1; PS12/503; PS12/504; PS12/512; PS12/512-1; PS14/245; PS14/247-1; PS14/250; PS14/256; PS14/259; PS14/260; PS14/261; PS14/270; PS14/274; PS14/275; PS14/276; PS14/277; PS14/278; PS14/280; PS14/285; PS14/293; PS14/294; PS14/304; PS14/305; PS14/306; PS14/307; PS14 EPOS I; Sample ID; Ship speed; Station label; Sterechinus antarcticus; Sterechinus antarcticus, dry mass; Sterechinus neumayeri; Sterechinus neumayeri, dry mass; Sterechinus spp.; Trawling distance; Trawling time; Uniform resource locator/link to image; Weddell Sea; Width
    Materialart: Dataset
    Format: text/tab-separated-values, 1796 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 10
    facet.materialart.
    Unbekannt
    Macrobenthic abundance, biomass, productivity and production in the deep Arctic ocean (2014)
    PANGAEA
    In:  Supplement to: Degen, Renate; Vedenin, Andrey; Gusky, Manuela; Boetius, Antje; Brey, Thomas (2015): Patterns and trends of macrobenthic abundance, biomass and production in the deep Arctic Ocean. Polar Research, 34(1), 24008, https://doi.org/10.3402/polar.v34.24008
    Details
    Publikationsdatum: 2023-01-13
    Beschreibung: The few existing studies on macrobenthic communities of the deep Arctic Ocean report low standing stocks, and confirm a gradient with declining biomass from the slopes down to the basins as commonly reported for deep-sea benthos. In this study we have further investigated the relationship of faunal abundance (N), biomass (B) as well as community production (P) with water depth, geographical latitude and sea ice concentration. The underlying dataset combines legacy data from the past 20 years, as well as recent field studies selected according to standardized quality control procedures. Community P/B and production were estimated using the multi-parameter ANN model developed by Brey (2012). We could confirm the previously described negative relationship of water depth and macrofauna standing stock in the Arctic deep-sea. Furthermore, the sea-ice cover increasing with high latitudes, correlated with decreasing abundances of down to 〈 200 individuals/m**2, biomasses of 〈 65 mg C/m**2 and P of 〈 75 mg C/m**2/y. Stations under influence of the seasonal ice zone (SIZ) showed much higher standing stock and P means between 400 - 1400 mg C/m**2/y; even at depths up to 3700 m. We conclude that particle flux is the key factor structuring benthic communities in the deep Arctic ocean, explaining both the low values in the ice-covered Arctic basins and the high values along the SIZ.
    Materialart: Dataset
    Format: application/zip, 4 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
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