Diversity, Ecological Index, and Distribution Pattern of Seagrass in Coastal Waters of North Bali

Abstract

The coastal ecosystem that has high biological productivity is seagrass. Seagrass has ecological functions, namely as nursery, foraging, and spawning areas for organisms. Identification of seagrass species using the transect method in the waters of Penimbangan Beach, North Bali, was conducted in 2020, aiming to identify seagrass species and seagrass cover conditions in the coastal waters of Penimbangan, North Bali. The method used in this activity was the quadratic transect method, which consisted of a transect (straight line) and a quadratic frame (a rectangular frame placed on a line). The seagrass species found consisted of six species, which belonged to two families: the Hydrocharitales family with three species, namely Thalassia hemprichii, Halophila ovalis, and Halophila decipiens, and the Potamogetonaceae family with three species, namely Halodule uninervis, Cymodocea rotundata, and Syringodium isoetifolium. The density of seagrass varied but did not exceed 25 stands/m2, indicating very rare density of seagrass in these waters. Halodule uninervis species played an important role in seagrass communities in the waters of Penimbangan Beach with an Important Value Index of 89.36% at station I and 73.43% at station II. The novelty of this research is that there has not been any research on seagrass at the coast of Penimbangan, North Bali.

Effect of hatchery and mariculture activity at the northwest coastal area of Bali on water quality and plankton community

“…Marine ecotourism management arrangements should follow suit to grow areas that refer to living structures, spaces, and patterns that are in harmony with the local culture [ 31] [32]. Observations at 11 stations showed high diversity index values at all stations.…”

Mapping of seagrass ecosystem on Bontosua Island, Pangkep District, South Sulawesi, Indonesia

“…The percentage of seagrass cover is a standard measure for the presence of seagrass in an area (Ricart et al 2020). This measure refers to the area covered by a particular seagrass species (Rosalina et al 2022b). Figure 3 shows the percentage of seagrass cover calculated from the average value of three transect repetitions for each species at each station on Bontosua Island.…”

KANDUNGAN GIZI PADA DAUN DAN RIZOMA Enhalus acoroides DI PULAU BADAK BADAK KOTA BONTANG KALIMANTAN TIMUR

“…Seagrass ecosystems has an important role in ecological functions, especially maintaining the survival of various biota in the Indonesian coastal-marine ecoregion (Kawaroe et al, 2016). Seagrass beds has a high biological productivity (Rosalina et al, 2022). Seagrass beds contribute to the availability of nutrients and other ecosystem services in coastal environments (Muzani et al, 2020;Lima et al, 2023).…”