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  • 1970-1974  (755,911)
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  • 1
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    Land seismic data of the ALPHA amphibious controlled source experiment - Datasets (2017)
    GFZ Data Services
    Details
    Publication Date: 2024-06-13
    Description: Abstract
    Description: Raw-, SEG-Y and other supplementary data of the landside deployment from the amphibious wide-angle seismic experiment ALPHA are presented. The aim of this project was to reveal the crustal and lithospheric structure of the subducting Adriatic plate and the external accretionary wedge in the southern Dinarides. Airgun shots from the RV Meteor were recorded along two profiles across Montenegro and northern Albania.
    Keywords: Seismology ; Adriatic Plate ; Montenegro ; Albania ; CONTROLLED_SOURCE_SEISMOLOGY 〉 REFRACTION ; CONTROLLED_SOURCE_SEISMOLOGY 〉 WIDE-ANGLE_REFLECTION_REFRACTION ; CONTROLLED_SOURCE_SEISMOLOGY 〉 AIRGUN_SOURCE ; CONTROLLED_SOURCE_SEISMOLOGY 〉 REGIONAL_SCALE ; CONTROLLED_SOURCE_SEISMOLOGY 〉 DSS ; SENSOR 〉 GEOPHONE ; SENSOR 〉 3-C ; AMPHIBIOUS ; MINISEED_DATA_FORMAT ; SEISMIC_WAVEFORM_DATA ; CONTROLLED_SOURCE_SEISMOLOGY 〉 RAW_DATA ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES 〉 SEISMIC PROFILE ; In Situ/Laboratory Instruments 〉 Profilers/Sounders 〉 SEISMIC REFLECTION PROFILERS
    Type: Dataset , Dataset
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    DATA GFZ
  • 2
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    Nitrogen and carbon fixation rates during METEOR cruise M91 (2016)
    PANGAEA
    In:  GEOMAR - Helmholtz Centre for Ocean Research Kiel
    Details
    Publication Date: 2024-06-13
    Keywords: Carbon fixation rate; CTD/Rosette; CTD-002; CTD-003; CTD-008; CTD-009; CTD-010; CTD-025; CTD-026; CTD-035; CTD-036; CTD-043; CTD-051; CTD-052; CTD-064; CTD-067; CTD-071; CTD-078; CTD-085; CTD-086; CTD-093; CTD-094; CTD-RO; DATE/TIME; DEPTH, water; Event label; LATITUDE; LONGITUDE; M91; M91_1713-1; M91_1713-3; M91_1717-1; M91_1718-1; M91_1719-1; M91_1730-1; M91_1731-1; M91_1737-1; M91_1737-3; M91_1743-1; M91_1751-1; M91_1751-3; M91_1759-1; M91_1762-2; M91_1764-8; M91_1768-1; M91_1773-2; M91_1773-3; M91_1777-1; M91_1777-4; Meteor (1986); Nitrogen fixation rate; Sample code/label; SOPRAN; South Pacific Ocean; Surface Ocean Processes in the Anthropocene
    Type: Dataset
    Format: text/tab-separated-values, 225 data points
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    DATA PANGAEA
  • 3
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    Soil organic carbon (SOC) storage in the Lena River Delta (2016)
    PANGAEA
    Details
    Publication Date: 2024-06-13
    Keywords: AWI Arctic Land Expedition; Carbon, total; Carbon/Nitrogen ratio; Changing Permafrost in the Arctic and its Global Effects in the 21st Century; Density, dry bulk; Drainage; Event label; Ice content; KU-T1-01; KU-T1-02; KU-T1-05; KU-T1-06; KU-T1-07; KU-T1-08; KU-T1-09; KU-T1-10; KU-T2-01; KU-T2-02; KU-T2-03; KU-T2-04; KU-T2-05; KU-T2-06; KU-T2-07; KU-T2-08; KU-T2-09; KU-T2-10; KU-T3-01; KU-T4-01; KU-T4-01b; KU-T4-02; Land cover classes; Landform; Latitude of event; Layer thickness; Lena2013; LF-T1-01; LF-T1-02; LF-T1-03; LF-T1-04; LF-T1-05; LF-T1-06; LF-T1-07; LF-T1-08; LF-T1-09; LF-T1-09b; LF-T1-10; LF-T2-01; LF-T2-01b; LF-T3-01; LF-T3-02; LF-T3-03; LF-T3-04; LF-T4-01; LF-T4-02; LF-T4-03; LF-T4-04; LF-T4-05; LF-T4-06; LF-T4-07b; LF-T4-07c; LF-T4-08; LF-T4-09; LF-T4-10; Longitude of event; MULT; Multiple investigations; Nitrogen, total; PAGE21; RU-Land_2013_Lena; Soil great group; Soil order; Soil organic carbon storage; Soil suborder; Type; USDA soil taxonomy; Water content, dry mass
    Type: Dataset
    Format: text/tab-separated-values, 1040 data points
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    DATA PANGAEA
  • 4
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    Winter sea surface temperature reconstruction from planktic foraminiferal transfer functions in the northeastern Arabian Sea over the last two millennia (2015)
    PANGAEA
    In:  Supplement to: Munz, Philipp; Siccha, Michael; Lückge, Andreas; Böll, Anna; Kucera, Michal; Schulz, Hartmut (2015): Decadal-resolution record of winter monsoon intensity over the last two millennia from planktic foraminiferal assemblages in the northeastern Arabian Sea. The Holocene, 25(11), 1756-1771, https://doi.org/10.1177/0959683615591357
    Details
    Publication Date: 2024-06-13
    Description: The Indian monsoon system is an important climate feature of the northern Indian Ocean. Small variations of the wind and precipitation patterns have fundamental influence on the societal, agricultural, and economic development of India and its neighboring countries. To understand current trends, sensitivity to forcing, or natural variation, records beyond the instrumental period are needed. However, high-resolution archives of past winter monsoon variability are scarce. One potential archive of such records are marine sediments deposited on the continental slope in the NE Arabian Sea, an area where present-day conditions are dominated by the winter monsoon. In this region, winter monsoon conditions lead to distinctive changes in surface water properties, affecting marine plankton communities that are deposited in the sediment. Using planktic foraminifera as a sensitive and well-preserved plankton group, we first characterize the response of their species distribution on environmental gradients from a dataset of surface sediment samples in the tropical and sub-tropical Indian Ocean. Transfer functions for quantitative paleoenvironmental reconstructions were applied to a decadal-scale record of assemblage counts from the Pakistan Margin spanning the last 2000 years. The reconstructed temperature record reveals an intensification of winter monsoon intensity near the year 100 CE. Prior to this transition, winter temperatures were 〉1.5°C warmer than today. Conditions similar to the present seem to have established after 450 CE, interrupted by a singular event near 950 CE with warmer temperatures and accordingly weak winter monsoon. Frequency analysis revealed significant 75-, 40-, and 37-year cycles, which are known from decadal- to centennial-scale resolution records of Indian summer monsoon variability and interpreted as solar irradiance forcing. Our first independent record of Indian winter monsoon activity confirms that winter and summer monsoons were modulated on the same frequency bands and thus indicates that both monsoon systems are likely controlled by the same driving force.
    Type: Dataset
    Format: application/zip, 5 datasets
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    DATA PANGAEA
  • 5
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    Sex-specific foraging during parental care in a size-monomorphic seabird (2016)
    PANGAEA
    In:  Supplement to: Ismar, Stefanie M; Raubenheimer, David; Bury, Sarah; Millar, Craig D; Hauber, Mark E (2017): Sex-specific foraging during parental care in a size-monomorphic seabird, the Australasian Gannet (Morus serrator). Wilson Journal of Ornithology, 129(1), 139-147, https://doi.org/10.1676/1559-4491-129.1.139
    Details
    Publication Date: 2024-06-13
    Description: Sex differences in foraging behaviour are typically studied in size-dimorphic taxa. Data on sex-specific behavior in monomorphic taxa are needed to test theories of reproductive investment. It has been suggested that in seabirds foraging niche separation may be related to decreased intersexual competition for food between cooperating pair-bonded individuals. Alternatively, sex differences in foraging niches may be driven by different nutritional requirements of females associated with the reproductive costs of egg production and oviposition. To assess these possibilities, we studied a size-monomorphic colonial seabird, the Australasian Gannet (Morus serrator) at the Cape Kidnappers gannetry, New Zealand. We recorded maximum dive depths, and distinct diet composition of incubating females as indicated by stable isotopic signatures. Results suggested greater female foraging effort during early times of incubation, indicated by significantly deeper maximum dives. Sex-specific foraging patterns across other breeding stages were more variable. Nitrogen stable isotopic values showed that incubating females occupied a different trophic position compared to males at the same breeding stage, and also from those of gannets of both sexes at later stages of parental care. Overall, the data are consistent with cost-of-oviposition compensation in females necessitating male-bias in parental care in biparental breeders. Further research is needed to unravel the implications for the evolution of sex differences in behavior in this and other monomorphic taxa.
    Type: Dataset
    Format: application/zip, 3 datasets
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    DATA PANGAEA
  • 6
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    N2 fixation in eddies of the eastern tropical South Pacific Ocean (2016)
    PANGAEA
    In:  GEOMAR - Helmholtz Centre for Ocean Research Kiel | Supplement to: Löscher, Carolin R; Bourbonnais, Annie; Dekaezemacker, Julien; Charoenpong, Chawalit N; Altabet, Mark A; Bange, Hermann Werner; Czeschel, Rena; Hoffmann, Chris; Schmitz, Ruth A (2016): N2 fixation in eddies of the eastern tropical South Pacific Ocean. Biogeosciences, 13(10), 2889-2899, https://doi.org/10.5194/bg-13-2889-2016
    Details
    Publication Date: 2024-06-13
    Description: Mesoscale eddies play a major role in controlling ocean biogeochemistry. By impacting nutrient availability and water column ventilation, they are of critical importance for oceanic primary production. In the eastern tropical South Pacific Ocean off Peru, where a large and persistent oxygen-deficient zone is present, mesoscale processes have been reported to occur frequently. However, investigations into their biological activity are mostly based on model simulations, and direct measurements of carbon and dinitrogen (N2) fixation are scarce. We examined an open-ocean cyclonic eddy and two anticyclonic mode water eddies: a coastal one and an open-ocean one in the waters off Peru along a section at 16°S in austral summer 2012. Molecular data and bioassay incubations point towards a difference between the active diazotrophic communities present in the cyclonic eddy and the anticyclonic mode water eddies. In the cyclonic eddy, highest rates of N2 fixation were measured in surface waters but no N2 fixation signal was detected at intermediate water depths. In contrast, both anticyclonic mode water eddies showed pronounced maxima in N2 fixation below the euphotic zone as evidenced by rate measurements and geochemical data. N2 fixation and carbon (C) fixation were higher in the young coastal mode water eddy compared to the older offshore mode water eddy. A co-occurrence between N2 fixation and biogenic N2, an indicator for N loss, indicated a link between N loss and N2 fixation in the mode water eddies, which was not observed for the cyclonic eddy. The comparison of two consecutive surveys of the coastal mode water eddy in November 2012 and December 2012 also revealed a reduction in N2 and C fixation at intermediate depths along with a reduction in chlorophyll by half, mirroring an aging effect in this eddy. Our data indicate an important role for anticyclonic mode water eddies in stimulating N2 fixation and thus supplying N offshore.
    Keywords: SOPRAN; Surface Ocean Processes in the Anthropocene
    Type: Dataset
    Format: application/zip, 3 datasets
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    DATA PANGAEA
  • 7
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    Soil organic carbon storage and soil properties for 50 soil profiles in the Lena River Delta including land form description and map (2016)
    PANGAEA
    In:  Department of Physical Geography, University of Stockholm | Supplement to: Siewert, Matthias Benjamin; Hugelius, Gustaf; Heim, Birgit; Faucherre, Samuel (2016): Landscape controls and vertical variability of soil organic carbon storage in permafrost-affected soils of the Lena River Delta. CATENA, 147, 725-741, https://doi.org/10.1016/j.catena.2016.07.048
    Details
    Publication Date: 2024-06-13
    Description: To project the future development of the soil organic carbon (SOC) storage in permafrost environments, the spatial and vertical distribution of key soil properties and their landscape controls needs to be understood. This article reports findings from the Arctic Lena River Delta where we sampled 50 soil pedons. These were classified according to the U.S.D.A. Soil Taxonomy and fall mostly into the Gelisol soil order used for permafrost-affected soils. Soil profiles have been sampled for the active layer (mean depth 58 ± 10 cm) and the upper permafrost to one meter depth. We analyze SOC stocks and key soil properties, i.e. C%, N%, C/N, bulk density, visible ice and water content. These are compared for different landscape groupings of pedons according to geomorphology, soil and land cover and for different vertical depth increments. High vertical resolution plots are used to understand soil development. These show that SOC storage can be highly variable with depth. We recommend the treatment of permafrost-affected soils according to subdivisions into: the surface organic layer, mineral subsoil in the active layer, organic enriched cryoturbated or buried horizons and the mineral subsoil in the permafrost. The major geomorphological units of a subregion of the Lena River Delta were mapped with a land form classification using a data-fusion approach of optical satellite imagery and digital elevation data to upscale SOC storage. Landscape mean SOC storage is estimated to 19.2 ± 2.0 kg C/m**2. Our results show that the geomorphological setting explains more soil variability than soil taxonomy classes or vegetation cover. The soils from the oldest, Pleistocene aged, unit of the delta store the highest amount of SOC per m2 followed by the Holocene river terrace. The Pleistocene terrace affected by thermal-degradation, the recent floodplain and bare alluvial sediments store considerably less SOC in descending order.
    Keywords: Changing Permafrost in the Arctic and its Global Effects in the 21st Century; PAGE21
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 8
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    Compilation of scientific results of the EU project BENGAL (2016)
    PANGAEA
    Details
    Publication Date: 2024-06-13
    Description: This data collection presents the compilation of scientific results of the EU project BENGAL.
    Keywords: 12812-002; 12913-002; 12914-003; 12923-002; 12923-005; 12923-013; 12925-004; 12925-008; 12926-001; 12926-002; 12930-004; 12930-005; 12930-006; 12930-007; 12930-010; 12930-014; 12930-015; 12930-017; 12930-018; 12930-022; 12930-023; 12930-025; 12930-026; 12930-027; 12930-028; 12930-029; 12930-032; 12930-034; 12930-035; 12930-036; 12930-037; 12930-038; 12930-039; 12930-040; 12930-044; 12930-045; 12930-046; 12930-048; 12930-049; 12930-052; 12930-055; 12930-059; 12930-061; 12930-063; 12930-064; 12930-065; 12930-066; 12930-068; 12930-071; 12930-073; 12930-075; 12930-078; 12930-081; 12930-082; 12930-084; 12930-087; 12930-093; 12930-095; 13077-001; 13077-004; 13077-006; 13077-012; 13077-014; 13077-015; 13077-018; 13077-019; 13077-021; 13077-023; 13077-024; 13077-025; 13077-026; 13077-035; 13077-036; 13077-047; 13077-057; 13077-058; 13077-059; 13077-060; 13077-062; 13077-063; 13077-065; 13077-069; 13077-070; 13077-071; 13077-072; 13077-078; 13077-087; 13077-089; 13077-090; 13077-093; 13077-096; 13077-097; 13077-098; 13077-099; 13078-006; 13078-008; 13078-010; 13078-011; 13078-012; 13078-013; 13078-015; 13078-016; 13078-017; 13078-018; 13078-019; 13078-027; 13078-029; 13078-031; 13078-037; 13078-038; 13200-001; 13200-004; 13200-005; 13200-007; 13200-008; 13200-009; 13200-010; 13200-011; 13200-012; 13200-016; 13200-017; 13200-018; 13200-020; 13200-021; 13200-022; 13200-024; 13200-025; 13200-026; 13200-027; 13200-028; 13200-029; 13200-030; 13200-032; 13200-033; 13200-035; 13200-036; 13200-039; 13200-041; 13200-045; 13200-046; 13200-047; 13200-048; 13200-049; 13200-051; 13200-052; 13200-053; 13200-058; 13200-059; 13200-060; 13200-061; 13200-062; 13200-063; 13200-065; 13200-068; 13200-069; 13200-070; 13200-071; 13200-073; 13200-074; 13200-075; 13200-077; 13200-078; 13200-080; 13200-081; 13200-082; 13200-083; 13200-084; 13200-087; 13200-089; 13200-090; 13200-091; 13200-093; 13200-094; 13200-096; 13200-099; 13201-001; 13201-002; 13201-005; 13368-003; 13368-004; 13368-007; 13368-008; 13368-012; 13368-014; 13368-015; 13368-019; 13368-022; 13368-023; 13368-024; 13368-025; 13368-026; 13368-028; 13368-030; 13368-036; 13368-039; 13368-040; 13368-042; 13368-044; 13368-045; 13368-047; 13368-048; 13368-049; 13368-051; 13368-052; 13368-053; 13368-055; 13368-056; 13368-057; 13370-004; 13370-005; 13370-006; 13627-005; 13627-008; 13627-010; 13627-011; 13627-012; 13627-014; 13627-015; 13627-017; 13627-022; 13627-023; 13627-024; 269; 356; 362; 372; 373; 54301-002; 54301-003; 54301-005; 54301-008; 54301-009; 54301-010; 54301-012; 54301-014; 54301-016; 54301-019; 54301-021; 54301-023; 64PE123; ALBEX lander; Autonome colonisation module; Baited free-fall benthic amphipod trap; BC; Bengal; BENGAL; Benthic Biology and Geochemistry of a North-eastern Atlantic Abyssal Locality; BIO; Biology; BN; Bottom net; Bottom water sampler; Box corer; BWS; CH135; Challenger; Chalut à perche (6 m beam trawl); CMA; CP; CTD/Rosette; CTD-RO; Current meter, Aanderaa; D217; D222/1; D222/2; D226; D229; D231; D236; D237; DEMAR; DI236_08-1; DI236_11-1; DI236_16-1; DI236_18-1; DI236_21-1; DI236_23-1; DI236_25-1; DI236_28-1; DI236_29-1; DI236_31-1; DI236_34-1; DI236_42-1; DI236_45-1; DI236_49-1; Discovery (1962); D-MOC-01; D-MOC-02; D-MOC-03; D-MOC-04; D-MOC-07; Dy222_FFR-05; FFR; FFR-01; FFR-02; FFR-04; Free vehicle respirometer; FT-04; FTS; GBGL; GBGL-01; GBGL-02; Göteborg lander; IMBC; IMBC lander; KASTEN; Kasten corer (1 m**2); M36/4; M36/4_MC1; M36/4_MC4; M36/4_MC5; M36/5; M36/5_MC26; M36/5_MC27; M36/5_MC28; M36/6; M36/6_368FFR; M36/6_371BWS; M36/6_372MUC; M36/6_373MUC; M36/6_375MSN; M36/6_380MSN; M36/6_381BWS; M36/6_BWS-19; M36/6_BWS-20; M36/6_MC33; M36/6_MC38; M36/6_MC41; M42/2; M42/2_363-1; M42/2_365; M42/2_366; M42/2_367; M42/2_368-2; M42/2_368-3; M42/2_370; M42/2_373; M42/2_374-2; M42/2_374-3; M42/2_377-1; M42/2_377-5; M42/2_377-6; M42/2_380-2; M42/2_380-3; M42/2_380-4; M42/2_381; M42/2_384-1; M42/2_385; M42/2_386; M42/2_388-1; M42/2_388-2; M42/2_391-2; M42/2_397-1; M42/2_397-3; M42/2_417; M42/2_418; M42/2_419; M42/2_420; M42/2_421-2; M42/2_421-3; M42/2_421-5; M42/2_422; M42/2_424-1; M42/2_424-2; M42/2_424-4; M42/2_425; M42/2_426-2; M42/2_429-1; M42/2_429-2; M42/2_430; M42/2_432-1; M42/2_433; M42/2_434-1; M42/2_434-2; M42/2_436; M42/2_438; M42/2_BWS-01; M42/2_BWS-02; M42/2_BWS-04; M42/2_BWS-05; M42/2_BWS-09; M42/2_BWS-10; M42/2_BWS-12; M42/2_CTD-03; M42/2_CTD-05; M42/2_CTD-06; M42/2_CTD-07; M42/2_CTD-08; M42/2_CTD-09; M42/2_CTD-13; M42/2_CTD-22; M42/2_CTD-24; M42/2_CTD-25; M42/2_CTD-28; M42/2_CTD-29; M42/2_CTD-31; M42/2_MC-04; M42/2_MC-09; M42/2_MC1; M42/2_MC2; M42/2_MC27; M42/2_MC28; M42/2_MC29; M42/2_MC-30; M42/2_MC31; M42/2_MC-32; M42/2_MC34; M42/2_MC-34; M42/2_MC4; M42/2_MC5; M42/2_MC6; M42/2_MC7; M42/2_MC8; MACOL; MCB57; MCB57-74; MCB92; MCS; MEGAC; MegaCorer; Meteor (1986); MOC; MOC1; MOCNESS opening/closing plankton net; MOCNESS opening/closing plankton net 1 sqm; MSN; MUC; MULT; MultiCorer; MultiCorer, small; MultiCorer Barnett pattern (12-57); MultiCorer Barnett pattern (4-57.8-74); MultiCorer Barnett pattern (8-92); Multiple investigations; Multiple opening/closing net; NIOZL; OTSB14; PAP; PAP-XIX; PAP-XV; PAP-XVIII; PAP-XX; PAP-XXIIIa; Pelagia; Photo sledge; PLG123; PLG123/12-1; PLG123/13-2; PLG123/13-3; PLG123/13-5; PLG123/13-6; PLG123/13-7; PLG123/14-1; Porcupine Abyssal Plain; RESP; Respirometer; RK127; RK128; RK130; SAPS; Sediment profile imagery; Semi-balloon trawl; SEP; South Atlantic Ocean; Spade box corer; Stand-alone pumps; Trap, sediment; TRAPS; VEGBOXC; Vertical amphipod trap; VET
    Type: Dataset
    Format: application/zip, 515 datasets
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  • 9
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    Swimming activity and body size of Pseudocalanus acuspes (KOSMOS 2013, Kristineberg, Sweden) (2016)
    PANGAEA
    In:  Environmental and Marine Biology, Åbo Akademi University | Supplement to: Almén, Anna-Karin; Brutemark, Andreas; Jutfelt, Fredrik; Riebesell, Ulf; Engström-Öst, Jonna (2017): Ocean acidification causes no detectable effect on swimming activity and body size in a common copepod. Hydrobiologia, 802(1), 235-243, https://doi.org/10.1007/s10750-017-3273-5
    Details
    Publication Date: 2024-06-13
    Description: Ocean acidification can impair an animal's physiological performance and energetically demand- ing activities such as swimming. Behavioural abnor- malities and changed activity in response to ocean acidification are reported in fish and crustacean species. We studied swimming activity in the calanoid copepod Pseudocalanus acuspes in response to near- future ocean acidification. Water and copepods were sampled from ten mesocosms deployed on the Swedish west coast. The experiments were conducted on animals reared in the mesocosms for 2 months during spring. Copepods were filmed after long-term (chronic) high-CO2, and after 20 h acute exposure to CO2. There was no significant effect of CO2 on copepods in chronic high-CO2, nor significant effect after the 20 h acute exposure. In addition, we measured prosome length from a large number of adult copepods, but no effect of acidification on body size was found. In this study, P. acuspes did not show sensitivity to near-future pCO2 levels. Even if a number of papers suggest that copepods seem robust to future ocean acidification, interaction between multiple stress factors, such as elevated temperature, hypoxia and salinity changes may impair a copepod's ability to resist lowered pH.
    Keywords: BIOACID; Biological Impacts of Ocean Acidification
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 10
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    KOSMOS Finland 2012 mesocosm study: Acartia sp. egg production rate, adult female size, adult female antioxidant capacity, and egg-hatching succes and nauplii development index of the egg transplant experiment (2016)
    PANGAEA
    In:  Supplement to: Vehmaa, Anu; Almén, Anna-Karin; Brutemark, Andreas; Paul, Allanah Joy; Riebesell, Ulf; Furuhagen, Sara; Engström-Öst, Jonna (2016): Ocean acidification challenges copepod phenotypic plasticity. Biogeosciences, 13(22), 6171-6182, https://doi.org/10.5194/bg-13-6171-2016
    Details
    Publication Date: 2024-06-13
    Description: Ocean acidification is challenging phenotypic plasticity of individuals and populations. Calanoid copepods (zooplankton) are shown to be fairly plastic against altered pH conditions, and laboratory studies indicate that transgenerational effects are one mechanism behind this plasticity. We studied phenotypic plasticity of the copepod Acartia sp. in the course of a pelagic, large-volume mesocosm study that was conducted to investigate ecosystem and biogeochemical responses to ocean acidification. We measured copepod egg production rate, egg-hatching success, adult female size and adult female antioxidant capacity (ORAC) as a function of acidification (fCO2 ~ 365-1231 µatm) and as a function of quantity and quality of their diet. We used an egg transplant experiment to reveal whether transgenerational effects can alleviate the possible negative effects of ocean acidification on offspring development. We found significant negative effects of ocean acidification on adult female size. In addition, we found signs of a possible threshold at high fCO2, above which adaptive maternal effects cannot alleviate the negative effects of acidification on egg-hatching and nauplii development. We did not find support for the hypothesis that insufficient food quantity (total particulate carbon 〈 55 µm) or quality (C : N) weakens the transgenerational effects. However, females with high-ORAC-produced eggs with high hatching success. Overall, these results indicate that Acartia sp. could be affected by projected near-future CO2 levels.
    Keywords: BIOACID; Biological Impacts of Ocean Acidification
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Expected Availability
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