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Water and temperature dynamics in the anchialine cave Jama pod Orljakom in the function of the recent introduction of invasive species Ficopomatus enigmaticus (Annelida, Polychaeta)

Sunčana Geček ; Rudjer Bošković Institute, Division for marine and environmental research, Bijenička 54, 10000 Zagreb, Croatia
Tin Klanjšček ; Rudjer Bošković Institute, Division for marine and environmental research, Bijenička 54, 10000 Zagreb, Croatia
Marijana Cukrov ; Croatian Biospeleological Society, Demetrova 1, 10000 Zagreb, Croatia
Tarzan Legović ; Rudjer Bošković Institute, Division for marine and environmental research, Bijenička 54, 10000 Zagreb, Croatia
Neven Cukrov ; Rudjer Bošković Institute, Division for marine and environmental research, Bijenička 54, 10000 Zagreb, Croatia


Puni tekst: engleski pdf 441 Kb

str. 47-50

preuzimanja: 369

citiraj


Sažetak

The invasive species Ficopomatus enigmaticus (Annelida, Polychaeta) colonized the anchialine cave Jama pod Orljakom (Krka River estuary, Croatia) seven years ago. This study examines the thermal regime of the cave and its water connection to the estuary. The results show that the cave is well connected to the Krka River estuary, but despite the good connectivity, limited water exchange can occur – especially in the surface layer. Since levels of dissolved oxygen and rates of food supply are heavily influenced by the water exchange rates, a weak exchange can determine limiting conditions on the growth and population density of F. enigmaticus in the cave.

Ključne riječi

anchialine cave, Ficopomatus enigmaticus, water temperature, water level, water exchange, tidal analysis

Hrčak ID:

87195

URI

https://hrcak.srce.hr/87195

Posjeta: 788 *