The Effects of Environmental Factors on the Dynamic Growth Pattern of Mangrove Avicennia marina
Avicennia marina is a species of mangrove tree occurs in the intertidal zones of estuarine areas in
Asia, including Indonesia. Mangrove within the genus member of Avicennia have long dominated
many coastal areas along Semarang and Demak coasts. The aim of this research was to analyze
the effect pattern of several environment parameters to Avicennia seedling growth rate.
Observation was held by setting 8 stations with 3 transects, each including mangrove survey and
environment parameter measurements. Mangrove survey including seedling and sapling stage
occupying 1 x 1 m and 5 x 5 m transect plot respectively. While environmental factor measurements
including on site measurement for temperature, salinity, pH and DO and laboratory analysis for
organic matter, nutrient (N,P,K) and sediment structure. The results showed there were 2 effect
pattern for environmental parameters observed including polynomial quadratic and logarithmic
patterns. Parameters which had polynomial quadratic pattern including salinity, DO, P, sand and
silt, while parameters which had logarithmic pattern were temperature, pH, organic matter and N.