LAJU PERTUMBUHAN KARANG Acropora formosa YANG DITRANPLANTASI PADA MEDIA TEMPEL DAN MEDIA GANTUNG

Abstract

Corals are associations of millions polyps that live in symbiotic way with zooxanthellae algae. Most of the polyps live in colonies and form a reef. Coral reefs are rich ecosystems that contain diverse organisms living in it. However, the threat of damage increases with the pressure that enters the waters. Coral transplantation is one way of restorations that can be done to restore damaged corals by cutting live corals and then planting them in places where the corals have been damaged. This study aims to determine the growth rate of Acropora formosa corals that were transplanted on fixed and hanging media. Data was collected in Malalayang Coast Waters, Manado City, North Sulawesi. The research took place for seven months. Beginning with the coral transplant activity of Acropora formosa on fixed and hanging media, then continued with monitoring every month for six months. Transplanted corals were measured using a ruler to determine the length of the coral from the beginning to the end of the study and then the data was analyzed using Microsoft Excel. The results obtained for the average growth rate of Acropora formosa corals transplanted on fixed media were 0.8 cm and on hanging media 1.8 cm. Overall growth rate averaged 1.3 cm.Keywords: Coral, Coral Reef, Transplant, Acropora formosa.

The success of coral Acropora sp. transplantation with various methods in Raja Ampat Regency, Indonesia

“…Other research results by Hairunizar et al [14] stated that the growth rate of corals of Acropora sp at a depth of 4 meters was 1.89 mm/week. Acropora is a coral genus with a high survival rate and growth rate [3]. Weil et al [15] said that Acroporids are regarded as the most rapidly growing corals, with some species having a linear expansion of more than 20 cm every year.…”

“…Anthropogenic influence also destroyed reefs greatly such as illegal fishing, anchoring activities, and coral mining [2]. According to satellite imagery, there are 2.5 million ha of coral reefs in Indonesia [3] and the bad condition category is 36,18% followed by 34,3% for moderates, 22,96% for good or 6,56% for very good. [4].…”

Variabilitas spasial karakteristik tutupan karang di perairan kecamatan Kepulauan Seribu Utara, DKI Jakarta

“…Kondisi terumbu karang di Indonesia pada kategori jelek sebanyak 36,18%, kategori cukup sebanyak 34,3%, kategori baik sebanyak 22,96%, dan kategori sangat baik sebanyak 6,56% (Runtuwene et al 2020). Hampir 85% sebaran terumbu karang yang ada di Indonesia terancam rusak yang sebesar 50% lainnya mendapatkan ancaman kerusakan tinggi .…”

Growth Rate of Coral Transplantation of Acropora formosa in Tidung Island, Kepulauan Seribu Regency, Province of DKI Jakarta

“…Pertumbuhan karang transplantasi A. formosa di perairan Pulau Pramuka, DKI Jakarta sebesar 6,4 cm (Mustahal dan Rahmawati, 2011). Pertumbuhan karang transplantasi A. formosa di perairan Pantai Malalayang, Sulawesi Utara sebesar 0,1-1,4 cm (Runtuwene et al, 2020).…”