Document Detail


Inter-annual variations of planktonic food webs in the northern Adriatic Sea.
MedLine Citation:
PMID:  16257435     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The temporal dynamics of microphytoplankton, microzooplankton and mesozooplankton were monitored over 37 months in the Adriatic Sea in order to identify alterations in the plankton structures, which can lead to, or enhance the production of macro-aggregates, that affected the entire northern basin in summers 2000 and 2002, and to assess any negative effects of mucilage on plankton temporal patterns. Samples were collected monthly, from June 1999 to July 2002, on three transects at 9 stations across the northern and central Adriatic Sea. Besides the high year-to-year variations in abundances and taxonomical composition, plankton communities only showed a clear seasonal succession during 2001, when since April a grazing food web developed and was able to control large sized phytoplankton increase. In spring-summer 2000 and 2002 consumer abundances remained quite low and the dominant mesozooplankton summer species (Penilia avirostris) did not reach its usual summer maximum. The lack of an efficient top control was more evident on the northernmost transect, where generally grazing food web prevails over the microbial one. A large part of the microphytoplankton blooms, although not particularly intense, was exported to the bottom in the particulate phase, where it was processed by bacteria, enhancing the production of refractory dissolved material.
Authors:
Serena Fonda Umani; Luisella Milani; Diego Borme; Alessandra de Olazabal; Stefania Parlato; Robert Precali; Romina Kraus; Davor Luci?; Jakica Njire; Cecilia Totti; Tiziana Romagnoli; Marinella Pompei; Monica Cangini
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2005-10-28
Journal Detail:
Title:  The Science of the total environment     Volume:  353     ISSN:  0048-9697     ISO Abbreviation:  Sci. Total Environ.     Publication Date:  2005 Dec 
Date Detail:
Created Date:  2005-12-07     Completed Date:  2006-08-10     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  0330500     Medline TA:  Sci Total Environ     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  218-31     Citation Subset:  IM    
Affiliation:
Laboratorio di Biologia Marina, Via A. Piccard 54, 34010 Trieste, Italy. labbioma@univ.trieste.it
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MeSH Terms
Descriptor/Qualifier:
Algae / physiology*
Animals
Ecosystem*
Eukaryota / physiology*
Food Chain*
Marine Biology / statistics & numerical data*
Mediterranean Sea
Phytoplankton / physiology*
Population Dynamics
Seasons
Zooplankton / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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