Mangrove Ecosystem Connectivity Based on Oceanographic System in Biawak Island, West Java, Indonesia

Abstract

This research aims to determine the ecosystems connectivity by observing the distribution of inter-island mangrove propagules in the territorial waters of Biawak Island. The data used are wind, tidal, and bathymetry of 2018. They are modeled according to the propagules’ weight and the particle trajectory module. The results showed that the entire propagules (Rhizopora sp, Sonneratia sp, and Brugueira sp) dominantly moved to the west and southeast. They are carried by the currents that are influenced by the west and east monsoon. The propagules of Rhizopora sp moves from east to southeast, Sonneratia sp moves from east to south, and propagules Brugueira sp moves from west to north. In addition to oceanographic factors, other parameters that can influence the pattern of propagules movement is the propagule’s mass; the lighter it is, the easier it is to be carried away.

Seagrass Connectivity Based on Oceanographic Condition in The Marine Protected Area of Biawak Islands, Indramayu

“…The pattern of alternating tidal currents or what is commonly called reversing current is the cause. This is similar to the previous research (Handyman et al, 2019;Salsabilla et al, 2020) that the current movement pattern in the waters of the KKPKI Biawak Islands tends to go back and forth. In other research (Nurulita et al, 2018) mentioned that the tidal current pattern in the waters of the Biawak Islands has a reversing current pattern.…”

“…Previous research has stated that seagrass cover in these islands has a low category of 5-10% with the types of seagrass found are Enhalus acoroides and Halophila sp (Purba et al, 2018;Purba & Harahap, 2013). Previous research (Fitriadi et al, 2017;Salsabilla et al, 2020) have discussed the movement of coral reef planula and mangrove propagule in the MPA of Biawak Islands, however, there is still no modeling study for seagrass to completed the research of ecosystems connectivity. This research focuses on analyzing the particle trajectory of the seagrass seed Enhalus acoroides in Seagrass Connectivity Based on Oceanographic ...... Biawak Islands, Indramayu (Ramadhan, A., et al) the MPA of Biawak Islands, Indramayu.…”