Community changes of coral reef fishes in Bunaken National Park, North Sulawesi, Indonesia

In order to look at changes in coral and reef fish communities during the period of 2006 to 2013, this research was carried out at Bunaken National Park (BNP) with 26 observation sites. The existing data and information of reef fish communities in the park generally could not be used as representative for describing the whole region. Percentage of coral cover and fish abundance during the study period shows that Bunaken Island is more similar to other locations. Reef fish community structure as seen from ecological index (H' at all sites being categorized, E category labile and low category C) shows the condition of the reef fish community is still good. Changes in the structure of reef fish communities showed declining conditions compared to 2006, and coral cover continued to decrease compared to 1998 and 2007. Good overall reef fish and coral cover have decreased; it is thought to be related to the pressure in BNP. Some of the pressures in the region were (i) increasing numbers of domestic as well as foreign visitors, (ii) increasing number of residents in the region, as well as the burden of waste and trash from the Bay of Manado. Penelitian dilakukan di Taman Nasional Bunaken (Utara dan Selatan) pada 26 lokasi pengamatan untuk menganalisis perubahan struktur komunitas ikan karang melalui kajian dari suatu time series data dari beberapa penelitian sebelumnya. Data primer mengenai ikan-ikan karang diperoleh melalui visual sensus bawah air yang bersamaan dengan observasi terumbu karang menggunakan point intercept transect. Nilai persentase tutupan karang dan kelimpahan ikan menunjukkan bahwa pada lokasi pengamatan Pulau Bunaken paling baik dibandingan lokasi lainnya. Struktur komunitas ikan karang yang dianalisis dengan indeks ekologi menunjukkan indeks keanekaragaman (H’) di semua site masuk kategori sedang, indeks kesamaan (E) kategori labil dan indeks Dominansi (C) kategori rendah. Hasil penelitian ini menunjukkan bahwa kondisi komunitas ikan karang masih baik, sekalipun perubahan struktur komunitas ikan karang menunjukkan kondisi yang menurun dibandingkan tahun 2006, begitu juga tutupan karang yang terus turun dibandingkan tahun 1998 dan 2007. Secara keseluruhan baik ikan karang maupun tutupan karang mengalami penurunan, hal ini diduga terkait dengan tekanan yang dialami kawasan TN. Bunaken. Salah satu tekanan terhadap kawasan adalah jumlah turis dari dalam maupun luar negeri yang semakin meningkat tiap tahunnya, penambahan jumlah penduduk di dalam kawasan, serta beban limbah dan sampah dari Teluk Manado.

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REEF FISHES BIODIVERSITY IN MARINE SANCTUARY AT MINAHASA UTARA DISTRICT, NORTH SULAWESI

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.28930/jitkt.v8i1.12496 ◽

2016 ◽

Vol 8 (1) ◽

Author(s):

Fakhrizal Setiawan ◽

Sonny Tasidjawa ◽

Efra Wantah ◽

Hendri Johanis

Keyword(s):

Reef Fish ◽

Fish Species ◽

Fish Community ◽

Coral Cover ◽

Good Condition ◽

Reef Fishes ◽

Fish Community Structure ◽

North Sulawesi ◽

Reef Fish Community ◽

Reef Fish Species

ABSTRACTThere are some marine sanctuaries (DPL) which are managed together by its societies in North Minahasa regency. From 19 villages with DPL, we conducted surveys using point intercept transect in 14 villages both inside and outside DPL in the subdistrict West Likupang and East Likupang, North Minahasa. Result showed that live coral cover was in general in moderate to excellent conditions both inside and outside DPL. Reef fish recorded in the study areas consisted of 267 reef fish species which categorized into 40 families. Bahoi village had the highest abundance and biomass within the DPL due to a very good condition of coral reef ecosystemn (>75% coral cover) both inside and outside DPL. Biomass of reef fish outside DPL of Bahoi was small but its abundance was the highest. This conditions indicated that the size of reef fish outside of Bahoi DPL was small and this gave a positive perspective to supply fishes into the outside region of Bahoi DPL. Overall, marine sanctuary in North Minahasa contained reef fish community structure in good condition, moderate diversity, relatively labile of evenness index, and low dominance. Grouping by similarity, reef fish species were generally similar in all locations. The separation of DPL locations produced some different fishes group due to its different location, oceanographic conditions, and characters. Keywords: Marine sanctuary, reef fish community, North Minahasa.

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REEF FISHES BIODIVERSITY IN MARINE SANCTUARY AT MINAHASA UTARA DISTRICT, NORTH SULAWESI

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.29244/jitkt.v8i1.12496 ◽

2016 ◽

Vol 8 (1) ◽

pp. 57-71 ◽

Cited By ~ 1

Author(s):

Fakhrizal Setiawan ◽

Sonny Tasidjawa ◽

Efra Wantah ◽

Hendri Johanis

Keyword(s):

Reef Fish ◽

Fish Species ◽

Fish Community ◽

Coral Cover ◽

Good Condition ◽

Reef Fishes ◽

Live Coral ◽

Fish Community Structure ◽

Reef Fish Community ◽

Reef Fish Species

ABSTRACTThere are some marine sanctuaries (DPL) which are managed together by its societies in North Minahasa regency. From 19 villages with DPL, we conducted surveys using point intercept transect in 14 villages both inside and outside DPL in the subdistrict West Likupang and East Likupang, North Minahasa. Result showed that live coral cover was in general in moderate to excellent conditions both inside and outside DPL. Reef fish recorded in the study areas consisted of 267 reef fish species which categorized into 40 families. Bahoi village had the highest abundance and biomass within the DPL due to a very good condition of coral reef ecosystemn (>75% coral cover) both inside and outside DPL. Biomass of reef fish outside DPL of Bahoi was small but its abundance was the highest. This conditions indicated that the size of reef fish outside of Bahoi DPL was small and this gave a positive perspective to supply fishes into the outside region of Bahoi DPL. Overall, marine sanctuary in North Minahasa contained reef fish community structure in good condition, moderate diversity, relatively labile of evenness index, and low dominance. Grouping by similarity, reef fish species were generally similar in all locations. The separation of DPL locations produced some different fishes group due to its different location, oceanographic conditions, and characters. Keywords: Marine sanctuary, reef fish community, North Minahasa.

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Reef fish community structure in the islands of Paraja Bay, Pandeglang District, Banten, Indonesia

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d221033 ◽

2021 ◽

Vol 22 (10) ◽

Author(s):

MUJIYANTO MUJIYANTO ◽

YAYUK SUGIANTI ◽

YUSUF ARIEF AFANDY ◽

RISNAWATI RAHAYU ◽

R. ARIEF BUDIKUSUMA ◽

...

Keyword(s):

Community Structure ◽

Reef Fish ◽

Fish Species ◽

Fish Community ◽

Reef Fishes ◽

Small Islands ◽

Fish Community Structure ◽

Evenness Index ◽

Reef Fish Community ◽

Low Diversity

Abstract. Mujiyanto, Sugianti Y, Afandy YA, Rahayu R, Bidikusuma RA, Nasriri AS, Syam AR, Purnaningtyas SE. 2021. Reef fish community structure in the islands of Paraja Bay, Pandeglang District, Banten, Indonesia. Biodiversitas 22: 4402-4413. Paraja Bay waters have five small islands that coexist with Ujung Kulon National Marine Park and act as a buffer zone for the diversity of fishery resources. This study aimed to assess the reef fishes community structure at small islands in Paraja Bay. Observations were made in 20 locations during August and September 2019 in the five small islands. Reef fishes community structure showed 106 species as included major group (54 species), indicator group (24 species) and target group (28 species), among five small islands, i.e. Badul, Mangir, Oar, Sumur and Umang Islands. The highest reef fishes abundance was founded in Umang Island waters. Several target fish species recorded during the study were mature fish (such as those targeted by fishermen). Only a small proportion were juveniles. Reef fish community structure was categorized as stress community to stable community with its indication was low diversity value, high evenness index, and low dominance. The low diversity index value illustrates that the level of uniformity of reef fish species in Paraja Bay waters is high. This condition is evidenced by each coral fish group's evenness index included in the main species group around 0.93 to 0.98. The target species is 0.88 to 0.99.

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Marine Fishes of Caño Island Biological Reserve: Reef fish community structure and updated list for the coastal fish.

Revista de Biología Tropical ◽

10.15517/rbt.v63i1.23098 ◽

2016 ◽

pp. 97-116

Author(s):

Eva Salas ◽

Cristina Sánchez-Godínez ◽

Andrea Montero-Cordero

Keyword(s):

Community Structure ◽

Reef Fish ◽

Fish Species ◽

Fish Community ◽

Coral Cover ◽

Fish Diversity ◽

Fish Community Structure ◽

Coastal Fish ◽

Reef Fish Community ◽

Biological Reserve

Biogeographically, the Caño Island Biological Reserve (CIBR) is of strategic importance, since it is located in the center of the Panamic Province (Costa Rica and Panama), characterized by a peak in fish species richness within the Tropical Eastern Pacific (TEP). Despite its importance, fish community structure around the island has not been deeply studied, and coastal fish diversity records need to be updated. The aims of the study were: 1) to describe the community structure of the reef fish community of CIBR and 2) to update the list of the coastal fish species recorded until today. For the first objective, 50 stationary fish counts were conducted at 10 locations around Caño Island, in which 79 species, belonging to 32 families, were registered. The most abundant family was Pomacentridae, and the most abundant species was Chromis atrilobata. Planktivorous and carnivorous fish were the most abundant. The existence of a relationship between coral cover and the presence of herbivorous grazers was highlighted within the analysis. Additionally, species composition was compared by site and this revealed that “El Barco” has an abundant presence of snappers. For the second objective, published fish species records were collected for the CIBR and 35 new records were added, for a total of 212 coastal fish species, which represents approximately 17% of coastal fish diversity in the TEP. This work presents a baseline for fish monitoring and mangement measures in this marine protected area.

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KOMUNITAS IKAN KARANG DI PERAIRAN TAMAN WISATA ALAM (TWA) BATUANGUS, KOTAMADYA BITUNG, PROVINSI SULAWESI UTARA

Jurnal Kelautan Indonesian Journal of Marine Science and Technology ◽

10.21107/jk.v9i1.1032 ◽

2016 ◽

Vol 9 (1) ◽

pp. 50

Author(s):

Fakhrizal Setiawan

Keyword(s):

Community Structure ◽

Reef Fish ◽

Fish Community ◽

Coral Cover ◽

Live Coral ◽

Fish Community Structure ◽

Coral Genus ◽

North Sulawesi ◽

Reef Fish Community ◽

Coral Reef Ecosystems

REEF FISH COMMUNITY IN THE BATUANGUS NATURE PARK, MUNICIPALITY OF BITUNG, NORTH SULAWESI PROVINCEResearch was conducted at 4 point dive sites in TWA Batuangus and 1 tourist sites as a comparison site to see the condition of coral reef ecosystems that include coral cover and reef fish communities’ information. Live coral cover obtained generally show in moderate category (25 to 49.9%). Coral genus recorded in 33 transects genus were 27 genera of hard corals and 6 genus of soft corals. Reef fish recorded consists of 195 species of reef fish and 37 families. Locations in the TWA Batuangus which have relatively good conditions, is Batu Beach location where had higher abundance and biomass compared to other locations. Magic Rock seen better than that of TWA Batuangus, based from the condition of coral and targeted fish. This is most likely because the location of TWA Batuangus is the fishing area for the surrounding communities while Magic Rock is became one of the important diving spot in the Lembeh Strait. Reef fish community structure based on ecological indices are in unstable condition (H' were in low to moderate, E were depressed until labile and C were low). The similarity of reef fish species grouping Hall Batuangus separated with other sites because of the characteristics of the location in the form of semi-enclosed bays where the circulation of currents which do not enter into the bay which makes limiting the distribution of coral and fish.Keywords: abundance, biomass, Batuangus, reef fish community structure, wildlife nature. ABSTRAKPenelitian sebanyak 4 titik penyelaman di TWA Batuangus dan 1 lokasi wisata sebagai pembanding dilakukan untuk melihat kondisi ekosistem terumbu karang yang meliputi informasi tutupan karang dan komunitas ikan karang. Tutupan karang hidup yang didapatkan menunjukkan umumnya berada pada kategori sedang (25–49,9 %). Genus karang yang tercatat masuk di dalam transek sebanyak 33 genus yang terdiri dari 27 genus karang keras dan 6 genus karang lunak. Ikan karang yang dicatat/ditemukan dalam survei derah dangkal ini terdiri dari 195 species ikan karang yang termasuk dalam 37 famili. Lokasi di dalam TWA Batuangus yang memiliki kondisi relatif baik yaitu di lokasi Pantai Batu dimana memiliki kelimpahan dan biomassa terbaik dibanding lokasi lainnya. Lokasi pembanding Magic Rock sedikit lebih baik daripada TWA Batuangus, jika dilihat dari kondisi karang serta ikan target. Hal ini kemungkinan karena lokasi TWA Batuangus menjadi daerah penangkapan ikan bagi masyarakat sekitar, sedangkan Magic Rock yang menjadi salah satu spot penyelaman penting di Selat Lembeh. Struktur komunitas ikan karang berdasarkan indeks ekologinya berada dalam kondisi labil (H’ masuk rendah hingga sedang, E tertekan hingga labil dan C yang rendah). Kesamaan species ikan karang mengelompokkan site Hall Batuangus terpisah dengan site lainnya karena karakteristik lokasi yang berupa teluk semi tertutup dimana sirkulasi arus yang tidak masuk kedalam teluk yang menjadikan pembatas distribusi karang dan ikan yang ada di dalamnya. Kata kunci: biomassa, Batuangus, kelimpahan, struktur komunitas ikan karang, Taman Wisata Alam.

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Trophic designation and live coral cover predict changes in reef-fish community structure along a shallow to mesophotic gradient in Hawaii

Coral Reefs ◽

10.1007/s00338-017-1581-x ◽

2017 ◽

Vol 36 (3) ◽

pp. 891-901 ◽

Cited By ~ 11

Author(s):

Corinne N. Kane ◽

Brian N. Tissot

Keyword(s):

Community Structure ◽

Reef Fish ◽

Fish Community ◽

Coral Cover ◽

Live Coral ◽

Fish Community Structure ◽

Live Coral Cover ◽

Reef Fish Community

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Invasive lionfish had no measurable effect on prey fish community structure across the Belizean Barrier Reef

PeerJ ◽

10.7717/peerj.3270 ◽

2017 ◽

Vol 5 ◽

pp. e3270 ◽

Cited By ~ 14

Author(s):

Serena Hackerott ◽

Abel Valdivia ◽

Courtney E. Cox ◽

Nyssa J. Silbiger ◽

John F. Bruno

Keyword(s):

Community Structure ◽

Reef Fish ◽

Fish Community ◽

Fish Communities ◽

Reef Fishes ◽

Barrier Reef ◽

Fish Community Structure ◽

Prey Fish ◽

Invasive Lionfish ◽

Study Sites

Invasive lionfish are assumed to significantly affect Caribbean reef fish communities. However, evidence of lionfish effects on native reef fishes is based on uncontrolled observational studies or small-scale, unrepresentative experiments, with findings ranging from no effect to large effects on prey density and richness. Moreover, whether lionfish affect populations and communities of native reef fishes at larger, management-relevant scales is unknown. The purpose of this study was to assess the effects of lionfish on coral reef prey fish communities in a natural complex reef system. We quantified lionfish and the density, richness, and composition of native prey fishes (0–10 cm total length) at sixteen reefs along ∼250 km of the Belize Barrier Reef from 2009 to 2013. Lionfish invaded our study sites during this four-year longitudinal study, thus our sampling included fish community structure before and after our sites were invaded, i.e., we employed a modified BACI design. We found no evidence that lionfish measurably affected the density, richness, or composition of prey fishes. It is possible that higher lionfish densities are necessary to detect an effect of lionfish on prey populations at this relatively large spatial scale. Alternatively, negative effects of lionfish on prey could be small, essentially undetectable, and ecologically insignificant at our study sites. Other factors that influence the dynamics of reef fish populations including reef complexity, resource availability, recruitment, predation, and fishing could swamp any effects of lionfish on prey populations.

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