, Volume 9, Issue 5, pp 409-420

Changes in the distribution of mangroves and saltmarshes in Jervis Bay, Australia

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Abstract

The decline of saltmarsh in Currambene Creek andCararma Inlet, in Jervis Bay, eastern Australia, inthe period 1944–1999 has been documented through photogrammetric analysis. The area of saltmarsh hasdeclined in Currambene Creek by approximately 52.5%and in Cararma Inlet by approximately 35%. InCurrambene Creek the decline of saltmarsh is primarilydue to the landward encroachment of mangroves, whilein Cararma Creek the seaward encroachment of Melaleuca and Casuarina have more significantlycontributed to losses of saltmarsh. Regional sea-levelrise is excluded as a primary cause of thistransgression. A more plausible hypothesis involvesan increase in the delivery of freshwater andnutrients to the intertidal environments in responseto higher rainfall and catchment modifications.