1,721,134 research outputs found
LISTA ED AGGIORNAMENTO DELLE MACROALGHE PRESENTI NELLA LAGUNA DI VENEZIA E NEI SUOI LITORALI MARINI
No full textStato delle conoscenze nella laguna di Venezia di due alien species: Undaria pinnatifida e Sargassum muticum.
No full textAmong the numerous allochthonous algae recorded in the Lagoon of Venice on the hard substrata
over the last 15-20 years, the Ochrophyta Undaria pinnatifida and Sargassum muticum are those
with the highest degree of diffusion, abundance and competition level with the native species.
In this paper cycles of development [life history] are described and the 2009 distribution are
up-to-dated for the whole lagoon and particularly for the city of Venice, where the two species
showed the greatest diffusion. Possible eradication techniques are discussed, considering both the
experimentations performed locally and, at a wider scale, at other sites of the world
Check list of the macroalgae recorded in the lagoon of venice since the early ‘80s. Comparison with the previous studies.
No full textCheck-list of seaweeds recorded in the last 20 years in Venice lagoon and a comparison with the previous records
No full textWe present a check-list of the seaweeds for Venice
lagoon, based on literature and recent records. At present
the total number of taxa is 277, including 71 Chlorophyceae
s.l. (25.6%), 148 Rhodophyceae (53.4%), 56
Phaeophyceae (20.2%) and 2 Chrysophyceae (0.7%).
Using present day taxonomy, the number of taxa is about
double that in previous lists. Since 1983, there have been
92 (ca. 33%) new records for Venice littoral zone. Of
these, 19 (ca. 21%) are first records for the Mediterranean
Sea, and many are alien taxa that seriously compete
with the growth of indigenous species. The number
of taxa that have disappeared from the lagoon, or have
not been found in the recent years, is 96
Studio preliminare delle associazioni di macroalghe e fanerogame marine per la valutazione dello stato ecologico delle lagune di Grado e Marano.
No full text
Identificazione di un modello di dinamica di popolazione di Cymodocea nodosa (Ucria) in laguna di Venezia
No full text
Distribuzione quali-quantitativa delle macroalghe dei moli foranei della Laguna di Venezia.
No full textA study of the benthic algal vegetation in the low middlittoral and infralittoral zones was carried out on the stones of the inlets of the Lagoon of Venice (Northern Adriatic Sea). 69 Rhodophyta (52%), 29 Ochrophyta (22%) and 35 Chlorophyta (26%) were found in the eighteen stations. Taxa number, total covering and both ratios Rhodophyta/Phaeophyta and photophilous/sciophilous species are not balanced. A reduction of species with high quality status has been observed in comparison to the works since the 1960
Il macrofitobenthos delle valli da pesca della laguna di Venezia.
No full textIn the spring-summer of 2003, during a study concerning the submerged aquatic vegetation of five fishponds in
the Lagoon of Venice, 41 species have been recorded (37 seaweeds and 4 seagrasses) and a map of coverage of the
main species has been realized. The submerged vegetation is simplified and characterized by the presence of few
species that clearly prevail on the others, both for specific coverage and biomass.
Considering the Quantitative Dominance, the Chlorophyceae Chaetomorpha linum, Cladophora spp. and
Valonia aegagrophila and the seagrasses Cymodocea nodosa and Ruppia maritima are the main species that colonize
the fishponds
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