caa a22 4500 397551355 CHVBK 20180308164751.0 cr unu---uuuuu 161202e199612 xx s 000 0 eng 10.1006/jmsc.1996.0119 doi (NATIONALLICENCE)oxford-10.1006/jmsc.1996.0119 The geographic scale of synchronized fluctuation patterns in zoobenthos populations as a key to underlying factors: climatic or man-induced [Elektronische Daten] [J. J. Beukema, K. Essink, H. Michaelis] Densities of zoobenthic species observed at different locations tend to fluctuate in parallel even when these sites are far apart. Climatic factors can synchronize population changes over wide geographic areas if they have a direct effect on recruitment or mortality. Several examples indicate that severe winters represent a major synchronizing factor among many of the zoobenthos species of tidal flats, both by immediately enhanced mortality rates in species sensitive to low temperatures and by enhanced recruitment in bivalve species some months later. Long-term monitoring in three areas of the Wadden Sea (Balgzand, Groningen, and Norderney) revealed synchronous baseline patterns in the fluctuations of several species. Examples are shown for the polychaete Nephtys hombergii and the tellinid bivalve Macoma balthica. Local departures from such common patterns indicate local disturbing factors. Examples are shown on scales of about 1 km (a waste-water discharge) and several tens of kilometres (eutrophication in the westernmost part of the Wadden Sea). © 1996 International council for the Exploration of the Sea Articles nationallicence abundance fluctuations nationallicence common causes nationallicence synchronization nationallicence tidal flats nationallicence Wadden Sea nationallicence zoobenthos nationallicence Beukema J. J. Netherlands Institute for Sea Research (NIOZ) PO Box 59, 1790 AB Den Burg, Texel, The Netherlands aut Essink K. National Institute for Coastal Marine Management/RIKZ PO Box 207, 9750 AE, Haren, The Netherlands aut Michaelis H. Niedersächsisches Landesamt für Ökologie, Forschungsstelle Küste An der Mühle 5, D-26548, Norderney, Germany aut ICES Journal of Marine Science Oxford University Press 53/6(1996-12), 964-971 1054-3139 53:6<964 1996 53 icesjms https://doi.org/10.1006/jmsc.1996.0119 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1006/jmsc.1996.0119 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Beukema J. J. Netherlands Institute for Sea Research (NIOZ) PO Box 59, 1790 AB Den Burg, Texel, The Netherlands aut NATIONALLICENCE 700 1- Essink K. National Institute for Coastal Marine Management/RIKZ PO Box 207, 9750 AE, Haren, The Netherlands aut NATIONALLICENCE 700 1- Michaelis H. Niedersächsisches Landesamt für Ökologie, Forschungsstelle Küste An der Mühle 5, D-26548, Norderney, Germany aut NATIONALLICENCE 773 0- ICES Journal of Marine Science Oxford University Press 53/6(1996-12), 964-971 1054-3139 53:6<964 1996 53 icesjms Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford