02384nas a2200265   4500008004500000020001400045245004700059210004700106300001200153490000700165520170600172653001501878653001101893653001701904653001601921653001301937653001001950653001701960653001701977653001401994653003602008100001802044700002202062856003402084       2005                        Engldsh    a0022-293300aMicrohabitat diversity of Svalbard bryozoa0 aMicrohabitat diversity of Svalbard bryozoa  a539-5540 v393 aBryozoans are one of the major macrofaunal groups of the high polar regions. Here we present data on the nature of bryozoan assemblages in the Svalbard Archipelago sampled over 6 years between 1997 and 2002. Samples were collected with use of Van Veen grab, dredge and Scuba diving at depths ranging from 0 to 268 m. Among examined material (5026 items) bryozoans were present on one type of abiotic (stones) and 40 types of biotic substrata. The biotic substrata we investigated included algae (12 taxa) and invertebrates (28 taxa: Hydrozoa, Gastropoda, Bivalvia, Polychaeta, Crustacea, Ascidiacea, other Bryozoa). Both a priori ANOSIM (Global R=0.512, P=0.001) and cluster analyses reveal differences between the assemblages on different types of substrata. Cluster analyses distinguish two distinct groups of substrata. The first (stable) included stones, molluscs and Balanus balanus whilst the second (flexible) consisted of algae, hydrozoans and bryozoans. Bryozoan assemblages which colonized different substrata, varied in terms of species composition and their dominance. Bryozoan species were categorized as generalists, low-specificity epibiotic species or locally abundant background species. No species were found to be substratum-specific to any type. Among substrata with the richest bryozoan fauna were stones (156 taxa), Chlamys islandica (68) and Balanus balanus (62). There were clear patterns in the distribution of substrata colonized by bryozoans within the fiord system: those shallow near the mouth were rich whilst those in deeper water were depauperate. We consider environmental gradients such as siltation and processes related to depth to be responsible for such patterns.10aantarctica10aArctic10abiodiversity10acommunities10aepibiota10afauna10aKongsfjorden10asigny island10asubstrata10asubstratum-bryozoan association1 aKuklinski, P.1 aBarnes, D., K. A.  u<Go to ISI>://00022666600000301923nas a2200277   4500008004500000020001400045245014800059210006900207260000800276300001200284490000700296520111500303653001701418653001201435653001401447653001401461653001001475653002101485653001801506653001401524653002201538100002001560700001601580700001501596856003401611       2011                        Engldsh    a0272-771400aRegional and temporal changes in epizoobiontic bryozoan-communities of Flustra foliacea (Linnaeus, 1758) and implications for North Sea ecology0 aRegional and temporal changes in epizoobiontic bryozoancommuniti  cFeb  a423-4330 v913 aUntil recently, bryozoans have not been used as indicators for changes in bottom communities or climate control in the North Sea Basin, despite a 200-year history of bryozoan collecting. The epizoobiontic bryozoan fauna of Flustra foliacea (Linnaeus, 1758) was analysed on 51 sample stations kept in four German museums. The samples cover the entire North Sea and different time periods (1776-2008, mainly the period of 1904/1905 compared to 1980-87). Cluster analysis shows a differentiation into a northern and a southern North Sea assemblage. The northern assemblage is characterized by Amphiblestrum flemingii (Busk, 1854), Callopora dumerilii (Audouin, 1826) and Tricellaria ternata (Ellis & Solander, 1786), while the southern North Sea is characterized by Electra pilosa (Linnaeus, 1767), Crisia eburnea (Linnaeus, 1758) and Plagioecia patina (Lamarck, 1816). Spatial separation approximately follows the 50 m depth contour. The temporal distribution patterns of bryozoans are discussed in terms of NAO (North Atlantic Oscillation) and temperature variations. (C) 2010 Elsevier Ltd. All rights reserved.10abiogeography10abryozoa10adiversity10aepibiosis10afauna10aFlustra foliacea10ainvertebrates10aNorth Sea10aspecies diversity1 aBitschofsky, F.1 aForster, S.1 aScholz, J.  u<Go to ISI>://000287290500009