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SPATIAL AND TEMPORAL TRANSPARENCY VARIABILITY IN THE EASTERN ADRIATIC SEA (CROSBI ID 583227)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Morović, Mira ; Precali, Robert ; Grbec, Branka ; Matijević, Slavica SPATIAL AND TEMPORAL TRANSPARENCY VARIABILITY IN THE EASTERN ADRIATIC SEA // BOOK OF ABSTRACTS OF THE 15TH SYMPOSIUM OF ENVIRONMENTAL POLLUTION AND ITS IMPACT ON LIFE IN THE MEDITERRANEAN REGION WITH FOCUS ON ENVIRONMENTAL THREATS IN THE MEDITERRANEAN REGION: PROBLEMS AND SOLUTIONS. / N. Senesi, W. Bergheim (ur.). München: MESAEP, 2009. str. 180-180

Podaci o odgovornosti

Morović, Mira ; Precali, Robert ; Grbec, Branka ; Matijević, Slavica

engleski

SPATIAL AND TEMPORAL TRANSPARENCY VARIABILITY IN THE EASTERN ADRIATIC SEA

Simple for use and cheap, transparency measurements with the Secchi disk present probably a unique marine parameter which has remained in use with unchanged methodology since 1860. Today, it is still interesting, especially from its long term prospective. In this paper we have investigated long term series of transparency data for the eastern Adriatic Sea, from the north to the south over 600km distance. For several stations, the series of transparency data span over five decades in time. The data from 20 stations were analysed: from the three stations in the north, fourteen in the middle and three in the South Adriatic Sea, of which fifteen are in the coastal areas and five from the open sea. Selected are all characteristic areas from the least transparent shallow coastal bay areas, to the most transparent as the open south Adriatic waters. The oldest records are from the Najade expedition (1911-1914). Seasonal signal is evident, with the late summer as the most transparent season, and mainly winter as the least transparent. Some stations show slightly changed seasonal course when comparing the last 10 years with the previous period. Areas show different behavior of transparency, from no trends to decreasing or increasing trends. In some coastal areas the conditions have improved recently and after decreasing, increasing transparency trends are occuring. In other areas decresing trends can be distinguished in summer period. For statistical analysis we have used only the data from stations which are sampled monthly. Since majority of the data were acquired during the summer period, for the stations with the sparse sampling only summer data were used. Shown are annual trends and variabilities and compared are seasonal courses between earlier and recent data. The ANOVA tests are performed for the raw and transformed data. High spatial variabilities of transparency point to variable influences in different areas from urban pollution or from cycles of natural factors. Causes of both, spatial and temporal variability and trends are discussed.

Secchi disc; Adriatic Sea; pollution; long term trends; seasonal variability

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Podaci o prilogu

180-180.

2009.

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objavljeno

978-3-936175-12-7

Podaci o matičnoj publikaciji

BOOK OF ABSTRACTS OF THE 15TH SYMPOSIUM OF ENVIRONMENTAL POLLUTION AND ITS IMPACT ON LIFE IN THE MEDITERRANEAN REGION WITH FOCUS ON ENVIRONMENTAL THREATS IN THE MEDITERRANEAN REGION: PROBLEMS AND SOLUTIONS.

N. Senesi, W. Bergheim

München: MESAEP

Podaci o skupu

15TH SYMPOSIUM OF ENVIRONMENTAL POLLUTION AND ITS IMPACT ON LIFE IN THE MEDITERRANEAN REGION WITH FOCUS ON ENVIRONMENTAL THREATS IN THE MEDITERRANEAN REGION: PROBLEMS AND SOLUTIONS.

poster

07.10.2009-11.10.2009

Bari, Italija

Povezanost rada

Geologija, Biologija