Seasonal water quality of shallow and eutrophic Lake Pamvotis, Greece: implications for restoration
Φόρτωση...
Ημερομηνία
Συγγραφείς
Romero, J. R.
Kagalou, I.
Imberger, J.
Hela, D.
Kotti, M.
Bartzokas, A.
Albanis, T.
Evmirides, N.
Karkabounas, S.
Papagiannis, J.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Hydrobiologia
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
Lake Pamvotis is a moderately sized (22 km(2)) shallow (z(avg)=4 m) lake with a polymictic stratification regime located in northwest Greece. The lake has undergone cultural eutrophication over the past 40 years and is currently eutrophic (annual averages of FRP=0.07 mg P l(-1), TP=0.11 mg P l(-1), NH(4)(+)=0.25 mg N l(-1), NO(3)(-)=0.56 mg N l(-1)). FRP and NH(4)(+) levels are correlated to external loading from streams during the winter and spring, and to internal loading during multi-day periods of summer stratification. Algal blooms occurred in summer (July-August green algae, August-September blue-green algae), autumn (October blue-green algae and diatoms), and winter (February diatoms), but not in the spring (March-June). The phytoplankton underwent brief periods of N- and P-limitation, though persistent low transparency (secchi depth of 60-80 cm) also suggests periods of light limitation. Rotifers counts were highest from mid-summer to early autumn whereas copepods were high in the spring and cladocerans were low in the summer. Removal of industrial and sewage point sources a decade ago resulted in a decrease in FRP. A phosphorus mass balance identified further reductions in external loading from the predominately agricultural catchment will decrease FRP levels further. The commercial fishery and lake hatchery also provides opportunities to control algal biomass through biomanipulation measures.
Περιγραφή
Λέξεις-κλειδιά
shallow lakes, water quality, eutrophication, restoration, hypersaline mono lake, phosphorus release, microcystis-aeruginosa, top-down, nitrogen, nutrient, sediment, biomanipulation, zooplankton, california
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000177101300006
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών