Status, diversity and distribution patterns of mangrove vegetation in the Segara Anakan lagoon, Java, Indonesia |
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Authors: | Saskia Hinrichs Inga Nordhaus Simon Joscha Geist |
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Institution: | 1. University of Rostock, Albert-Einstein-Stra?e 3, 18051, Rostock, Germany 2. Leibniz Center for Tropical Marine Ecology, Fahrenheitstrasse 6, 28359, Bremen, Germany 3. University of Bremen, Bibliotheksstra?e 1, 28359, Bremen, Germany
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Abstract: | In the Segara Anakan lagoon, Java, 21 tree species and 5 understorey genera have been identified. Average tree density is
0.80 ± 0.99 Ind./m2 with 48.71% seedlings and an average basal area of 9.86 ± 10.54 cm2/m2. Tree density and diversity are
high in the eastern part of the lagoon, located near the city of Cilacap. There, the dominant tree species are Aegiceras corniculatum, Nypa fruticans and Rhizophora apiculata, of which the two latter are characteristic for mature forests. By contrast, understorey species and the pioneer species (Avicennia alba,
Aegiceras corniculatum and Sonneratia caseolaris) dominate the central lagoon where several rivers discharge. Compared to former studies, seedling density and tree diameter
in the central lagoon has declined considerably and tree species dominance has changed. The high sedimentation rates and deforestation
are likely to prevent the formation of a mature forest there. Tree communities are more equilibrated in the eastern lagoon
which points to a more stable and less disturbed mangrove forest. |
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