Giyanto Giyanto

Indonesian Institute of Sciences | LIPI · Research Center for Oceanography

Black band disease (BBD) is one of the oldest recognized diseases of scleractinian corals. This disease is little known on the variation of progression rates across relatively small spatial scales and how local variations in the environment can impact prevalence and spread. The purpose of this study was to explore the progression of BBD on genus Mo...

Black band disease (BBD) is one of the oldest recognized diseases of scleractinian corals. This disease is little known on the variation of progression rates across relatively small spatial scales and how local variations in the environment can impact prevalence and spread. The purpose of this study was to explore the progression of BBD on genus Mo...

The Indonesian coral reef faced significant challenges due to the lack of precise instruments for assessing the health status of corals, which is crucial for ensuring their long-term viability. The reef health index was established by utilizing extensive monitoring data from Indonesia, incorporating metrics such as live coral cover, resilience leve...

Coral reefs in the Central Indo-Pacific region comprise some of the most diverse and yet threatened marine habitats. While reef monitoring has grown throughout the region in recent years, studies of coral reef benthic cover remain limited in spatial and temporal scales. Here, we analysed 24,365 reef surveys performed over 37 years at 1972 sites thr...

Changes in reef benthic communities in Sumba Timur, East Nusa Tenggara, Indonesia. Biodiversitas 23: 697-707. Anthropogenic impacts and coral bleaching due to rising sea surface temperature have been severe and often, as of late on the worldwide scale, influencing the composition of coral reef benthic communities from coral to algal-ruled reefs (ph...

Penyelaman ilmiah telah berlangsung selama puluhan tahun di Indonesia. Salah satu kegiatan penyelaman ilmiah, yaitu melakukan pemantauan terhadap ekosistem terumbu karang atau yang lebih dikenal dengan metodologi penilaian kondisi terumbu karang. Luasnya perairan Indonesia menjadi tantangan untuk melakukan pemantauan terumbu karang secara bersama-s...

Scientific diving has been going on for decades in Indonesia. One of the scientific diving activities is monitoring coral reef ecosystems, better known as the coral reef condition assessment methodology. However, the vastness of Indonesia’s waters is challenging to monitor coral reefs together. Therefore, one coral reef monitoring strategy is creat...

Coral recruitment is the process when coral larvae settle to the substrate and establish themselves as a reef community. The success of coral recruitment is very important for the sustainability of coral reefs in an area, including the Derawan Islands which develop underwater tourism. Observations on coral reef recruitment were carried out in the D...

The Komodo National Park is one of the largest National Parks in Indonesia that conserves not only terrestrial to protect the habitat of Komodo dragons but also marine areas. The marine ecosystems play important roles in protecting the shoreline from abrasion and supporting sustainability of seafood supplies for local communities. This study presen...

Manta rays (Mobula birostris and M. alfredi) are threatened by overexploitation for international trade. Indonesia was home to the world's largest documented manta fishery-Lamakera, in East Nusa Tenggara. However, in 2014, the Indonesian government declared manta rays a protected species. Here we describe an integrated intervention to reduce manta...

Indonesia is part of the coral triangle region which is known as the world’s highest marine biodiversity, including stony corals. This situation used to benefit local people by trading ornamental corals. The aims of this study are to investigate the potential stock of ornamental corals as well as the reef conditions. The study took place in Kendari...

The aims of reef baseline and monitoring have been assessed trends and dynamic of reef benthic cover by temporal and spatial scale, based on the change of reef benthic cover during the monitoring period. The reef baseline and monitoring were used Line Intercept Transect (LIT) method with 10 m long and three replicates on 5-7 m depth. Box plot inter...

Many coral reef systems are shelf-based and consist of reefs that are arranged in rows parallel to the coastline. They usually show an increase in species richness in the offshore direction, coinciding with decreasing terrigenous impact and a deeper seafloor. These two conditions usually concur, which makes it less easy to distinguish how each of t...

Buku ini menjelaskan tentang indeks kesehatan terumbu karang yang tidak hanya menilai kondisi tutupan karang hidup, tapi juga tingkat recovery dan biomassa ikan karang

Terumbu karang merupakan salah satu kekayaan alam Indonesia, dengan fungsi sangat penting antara lain pelindung ekosistem pantai, rumah bagi banyak jenis mahluk hidup di laut, sumber obat-obatan, objek wisata, daerah penelitian, dan mempunyai nilai spiritual di beberapa daerah. Disisi lain, terumbu karang juga menghadapi berbagai ancaman, baik yang...

In order to manage and conserve coral reefs it is essential to understand the factors that structure reef communities. In Indonesia’s Jakarta Bay – Pulau Seribu reef complex, pronounced on-to-offshore variation in a number of variables was observed. Live coral cover, and echinoderm and fish species richness were higher in midshore sites than either...