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Karen Helen Wiltshire Alexandra Kraberg Inka Bartsch Maarten Boersma Heinz-Dieter Franke Jan Freund Christina Gebühr Gunnar Gerdts Karina Stockmann Antje Wichels 《Estuaries and Coasts》2010,33(2):295-310
The Helgoland Roads time series is one of the richest temporal marine data sets available. Running since 1962, it documents
changes for phytoplankton, salinity, Secchi disc depths and macronutrients. Uniquely, the data have been carefully quality
controlled and linked to relevant meta-data, and the pelagic time series is further augmented by zooplankton, intertidal macroalgae,
macro-zoobenthos and bacterioplankton data. Data analyses have shown changes in hydrography and biota around Helgoland. In
the late 1970s, water inflows from the south-west to the German Bight increased with a corresponding increase in flushing
rates. Salinity and annual mean temperature have also increased since 1962 and the latter by an average of 1.67°C. This has
influenced seasonal phytoplankton growth causing significant shifts in diatom densities and the numbers of large diatoms (e.
g. Coscinodiscus wailesii). Changes in zooplankton diversity have included the appearance of the ctenophore Mnemiopsis leidyi. The macroalgal community also showed an increase in green algal and a decrease in brown algal species after 1959. Over 30
benthic macrofaunal species have been newly recorded at Helgoland over the last 20 years, with a distinct shift towards southern
species. These detailed data provide the basis for long-term analyses of changes on many trophic levels at Helgoland Roads. 相似文献
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von Raumer Jürgen F. Nesbor Heinz-Dieter Stampfli Gérard M. 《International Journal of Earth Sciences》2017,106(7):2279-2296
International Journal of Earth Sciences - Base metal mining in the Rhenohercynian Zone has a long history. Middle-Upper Devonian to Lower Carboniferous sediment-hosted massive sulfide deposits... 相似文献
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