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  • 1
    Online Resource
    Online Resource
    Indicator species and seasonal succession of planktonic copepod assemblages driven by the interplay of subtropical and temperate waters in the southern East China Sea
    Brill ; 2015
    In:  Crustaceana Vol. 88, No. 1 ( 2015-01-22), p. 96-112
    Details
    In: Crustaceana, Brill, Vol. 88, No. 1 ( 2015-01-22), p. 96-112
    Abstract: The northeastern region off Taiwan exhibits a high marine diversity favoured by the influence of northern and subtropical water masses driven by the East China Sea Water and the Kuroshio current (KC), respectively. A total of 87 species of copepods representing 36 genera were identified in present study. Calanoida was the most dominant order, while Temora turbinata (Dana, 1849), Paracalanus parvus (Claus, 1863) and Ditrichocorycaeus affinis (McMurrich, 1916) appeared as most dominant species. However, we noticed the unusual presence of the copepod Calanoides philippinensis Kitou & Tanaka, 1969 in concurrence with the dominant influence of KC, which suggests a larger intrusion of South China Sea (SCS) waters into the northeast Taiwan region. C. philippinensis is an exclusive species of the warm subtropical Pacific waters. Its presence in the northern Taiwan region may reflect a larger intrusion of warm SCS waters. We therefore suggest its potential use as a bioindicator of southern, tropical waters in the northern Taiwan area.
    Type of Medium: Online Resource
    ISSN: 0011-216X , 1568-5403
    URL: Article
    DOI: 10.1163/15685403-00003396
    RVK:
    WA 15000
    Language: Unknown
    Publisher: Brill
    Publication Date: 2015
    detail.hit.zdb_id: 2019267-8
    SSG: 12
    Location Call Number Limitation Availability
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  • 2
    Online Resource
    Online Resource
    Community structure of zooplankton during the southwest-northeast monsoon transition period in the southeastern East China Sea
    Brill ; 2022
    In:  Crustaceana Vol. 95, No. 5-6 ( 2022-07-29), p. 667-694
    Details
    In: Crustaceana, Brill, Vol. 95, No. 5-6 ( 2022-07-29), p. 667-694
    Abstract: The assessment of zooplankton spatial structure is critical to quantifying plankton production and biochemical cycling. Here, we show the effect of monsoon-driven hydrographic changes on the spatial patterns of zooplankton at regional scales. Based on a field survey conducted during the monsoon transition, we assess the community structure and ash-free dry weight above 100 m depth in the Kuroshio edge area, southeastern East China Sea. The zooplankton community was dominated by copepods, with calanoids as the most abundant taxon followed by poecilostomatoids. Copepod assemblages comprised 81 species belonging to 41 families, and 23 genera, with Undinula vulgaris as the most abundant species. The richness of zooplankton taxa showed a mounting trend from the coast to offshore, which was opposite to the spatial variation of total zooplankton biomass. Our results suggest a leading influence of the Kuroshio Current during the southwest-northeast monsoon transition period in the southeastern East China Sea.
    Type of Medium: Online Resource
    ISSN: 0011-216X , 1568-5403
    URL: Article
    DOI: 10.1163/15685403-bja10213
    RVK:
    WA 15000
    Language: Unknown
    Publisher: Brill
    Publication Date: 2022
    detail.hit.zdb_id: 2019267-8
    SSG: 12
    Location Call Number Limitation Availability
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  • 3
    Online Resource
    Online Resource
    Global variability in seawater Mg:Ca and Sr:Ca ratios in the modern ocean
    Proceedings of the National Academy of Sciences ; 2020
    In:  Proceedings of the National Academy of Sciences Vol. 117, No. 36 ( 2020-09-08), p. 22281-22292
    Details
    In: Proceedings of the National Academy of Sciences, Proceedings of the National Academy of Sciences, Vol. 117, No. 36 ( 2020-09-08), p. 22281-22292
    Abstract: Seawater Mg:Ca and Sr:Ca ratios are biogeochemical parameters reflecting the Earth–ocean–atmosphere dynamic exchange of elements. The ratios’ dependence on the environment and organisms' biology facilitates their application in marine sciences. Here, we present a measured single-laboratory dataset, combined with previous data, to test the assumption of limited seawater Mg:Ca and Sr:Ca variability across marine environments globally. High variability was found in open-ocean upwelling and polar regions, shelves/neritic and river-influenced areas, where seawater Mg:Ca and Sr:Ca ratios range from ∼4.40 to 6.40 mmol:mol and ∼6.95 to 9.80 mmol:mol, respectively. Open-ocean seawater Mg:Ca is semiconservative (∼4.90 to 5.30 mol:mol), while Sr:Ca is more variable and nonconservative (∼7.70 to 9.10 mmol:mol); both ratios are nonconservative in coastal seas. Further, the Ca, Mg, and Sr elemental fluxes are connected to large total alkalinity deviations from International Association for the Physical Sciences of the Oceans (IAPSO) standard values. Because there is significant modern seawater Mg:Ca and Sr:Ca ratios variability across marine environments we cannot absolutely assume that fossil archives using taxa-specific proxies reflect true global seawater chemistry but rather taxa- and process-specific ecosystem variations, reflecting regional conditions. This variability could reconcile secular seawater Mg:Ca and Sr:Ca ratio reconstructions using different taxa and techniques by assuming an error of 1 to 1.50 mol:mol, and 1 to 1.90 mmol:mol, respectively. The modern ratios’ variability is similar to the reconstructed rise over 20 Ma (Neogene Period), nurturing the question of seminonconservative behavior of Ca, Mg, and Sr over modern Earth geological history with an overlooked environmental effect.
    Type of Medium: Online Resource
    ISSN: 0027-8424 , 1091-6490
    URL: Article
    DOI: 10.1073/pnas.1918943117
    RVK:
    TA 1000
    RVK:
    WA 15000
    Language: English
    Publisher: Proceedings of the National Academy of Sciences
    Publication Date: 2020
    detail.hit.zdb_id: 209104-5
    detail.hit.zdb_id: 1461794-8
    SSG: 11
    SSG: 12
    Location Call Number Limitation Availability
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  • 4
    Online Resource
    Online Resource
    Trophic cascades promote threshold-like shifts in pelagic marine ecosystems
    Proceedings of the National Academy of Sciences ; 2009
    In:  Proceedings of the National Academy of Sciences Vol. 106, No. 1 ( 2009-01-06), p. 197-202
    Details
    In: Proceedings of the National Academy of Sciences, Proceedings of the National Academy of Sciences, Vol. 106, No. 1 ( 2009-01-06), p. 197-202
    Abstract: Fisheries can have a large impact on marine ecosystems, because the effects of removing large predatory fish may cascade down the food web. The implications of these cascading processes on system functioning and resilience remain a source of intense scientific debate. By using field data covering a 30-year period, we show for the Baltic Sea that the underlying mechanisms of trophic cascades produced a shift in ecosystem functioning after the collapse of the top predator cod. We identified an ecological threshold, corresponding to a planktivore abundance of ≈17 × 10 10 individuals, that separates 2 ecosystem configurations in which zooplankton dynamics are driven by either hydroclimatic forces or predation pressure. Abundances of the planktivore sprat above the threshold decouple zooplankton dynamics from hydrological circumstances. The current strong regulation by sprat of the feeding resources for larval cod may hinder cod recovery and the return of the ecosystem to a prior state. This calls for the inclusion of a food web perspective in management decisions.
    Type of Medium: Online Resource
    ISSN: 0027-8424 , 1091-6490
    URL: Article
    DOI: 10.1073/pnas.0806649105
    RVK:
    TA 1000
    RVK:
    WA 15000
    Language: English
    Publisher: Proceedings of the National Academy of Sciences
    Publication Date: 2009
    detail.hit.zdb_id: 209104-5
    detail.hit.zdb_id: 1461794-8
    SSG: 11
    SSG: 12
    Location Call Number Limitation Availability
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