scholarly journals Studi Ekologi Hutan Mangrove di Kota Waisai Kabupaten Raja Ampat, Papua Barat

2018 ◽  
Vol 6 (1) ◽  
pp. 18-24
Author(s):  
Efradus H. Mirino ◽  
Suriani Br. Surbakti ◽  
Lisye I. Zebua
Keyword(s):  
Line Transect ◽  
Mangrove Forests ◽  
Rhizophora Stylosa ◽  
Nypa Fruticans ◽  
Port Area ◽  
Sonneratia Alba ◽  
West Papua ◽  
Avicennia Officinalis ◽  
Papua Barat ◽  
The Town

This aim of the research is to know the condition of the ecology of mangrove forests in the Waisai Raja Ampat District, West Papua. This research was carried out during the year, from April 2012-April 2013. Research locations include three (3) stations which were Moko, Kimindores and the tourist port area. The method was line transect with quadratic plot along a 100-meter at the seaside. The plots were created in size of 1 x 1m2; 5 x 5 m2; 10 x 10 m2 and 20 x 20 m2. The observations showed that there were 8 types of mangrove in the town of Waisai consisting of Avicennia officinalis, Sonneratia alba, Rhizophora stylosa, R. mangle, R. mucronata, Aegricecas floridum, Bruguiera gymnnorhiza, and Nypa fruticans. The distribution of mangrove types in Waisai is spread unevenly. A. floridum was found only at Moko; R. mucronata was at  the area of the tourist Port only; and Nypa has a wider distribution since they were found at the three stations of observations. Key words: biota, diversity, mangrove, Raja Ampat. 

scholarly journals Keanekaragaman Jenis Mangrove di Pantai Kapeta dan Pantai Tanaki, Kecamatan Siau Barat Selatan, Kabupaten Sitaro - Sulawesi Utara (Mangrove Diversity of Kapeta Beach and Tanaki Beach, South West Siau District, Sitaro Regency - North Sulawesi)

2017 ◽  
Vol 6 (1) ◽  
Author(s):  
Ivandri Viktor Kirauhe ◽  
Ratna Siahaan ◽  
Johanis Julian Pelealu
Keyword(s):  
Species Richness ◽  
Line Transect ◽  
Bruguiera Gymnorrhiza ◽  
Terminalia Catappa ◽  
Nypa Fruticans ◽  
North Sulawesi ◽  
Rhizophora Apiculata ◽  
South West ◽  
Sonneratia Alba ◽  
Species Richness And Abundance

Abstrak             Penelitian tentang keanekaragaman mangrove berdasarkan fungsi dan manfaat mangrove di Pulau Siau telah dilakukan untuk menganalisis keanekaragaman jenis vegetasi mangrove di Pantai Kapeta dan Pantai Tanaki, Kecamatan Siau Barat Selatan, Kabupaten Sitaro, Provinsi Sulawesi Utara. Metode garis berpetak berselang digunakan untuk memperoleh kekayaan dan kelimpahan jenis vegetasi. Garis transek diletakkan secara vertikal dari laut ke daratan sebanyak 3 jalur di tiap stasiun dengan jarak antar jalur sekitar 300 m. Data dianalisis secara deskriptif. Indeks keanekaragaman jenis diketahui berdasarkan Indeks Shannon - Wienner (H’). Pantai Kapeta dan Tanaki memiliki kekayaan jenis mangrove sebanyak 10 jenis dari 9 suku dan kelimpahan jenis sebesar 657 individu. Jenis mangrove yang ditemukan di Kecamatan Siau Barat Selatan yaitu Bruguiera gymnorrhiza, Sonneratia alba, Rhizophora apiculata, Nypa fruticans, Croton oblongus, Ficus,  Heritiera littoralis, Intsia bijuga, Ixora talaudensis dan Terminalia catappa. Keanekaragaman jenis mangrove di wilayah penelitian Kecamatan Siau Barat Selatan tergolong rendah dengan indeks H’ sebesar 0,775 yang lebih rendah dari 1. Keanekaragaman mangrove di Pantai Kapeta dan Tanaki juga rendah dengan indeks berturut-turut yaitu 0,654 dan 0,880.Kata Kunci: keanekaragaman mangrove, Pantai Kapeta, Pantai Tanaki, Pulau Siau. Abstract The study on the diversity of mangrove on Siau Island based on the its functions and benefits was conducted to analyze the diversity of mangrove vegetation in Kapeta and Tanaki Beach, District of South West Siau, Sitaro Regency, North Sulawesi. The quadrate line transect method was used to obtain data of species richness and abundance. Three line transects were installed vertically from sea margin to land at each station.  Line spaces were 300 m. Data were analyzed descriptively. Biodiversity index of mangrove was based on  Shannon - Wienner index (H ').  Kapeta Beach and Tanaki Beach had species richness and abundance respectively i.e. 10 species of 9 familes and 657 individu. The mangrove  found in South West Siau District i.e. Bruguiera gymnorrhiza, Sonneratia alba, Rhizophora apiculata, Nypa fruticans, Croton oblongus, Ficus, Heritiera littoralis, Intsia bijuga, Ixora talaudensis and Terminalia catappa. Mangrove diversity in the study area was low (H ' index = 0.775). The diversity of mangrove in Kapeta Beach and Tanaki Beach were also low, i.e.  0.654 and 0.880 respectively.Keywords: mangrove diversity, Kapeta Beach, Tanaki Beach, Siau Island.

scholarly journals Analisis Kesesuaian Ekowisata Mangrove Di Desa Taddan Kecamatan Camplong Kabupaten Sampang

2021 ◽  
Vol 12 (2) ◽  
pp. 115-125
Author(s):  
Maywa Widiya Pratiwi ◽  
Firman Farid Muhsoni
Keyword(s):  
Avicennia Marina ◽  
Line Transect ◽  
Rhizophora Mucronata ◽  
Rhizophora Stylosa ◽  
Rhizophora Apiculata ◽  
Sonneratia Alba

Kawasan hutan mangrove memiliki keanekaragaman hayati dan biota yang beragam, kawasan ini potensial dikembangkan sebagai kawasan ekowisata bahari. Tujuan penelitian ini untuk mengetahui indeks kesesuaian wisata, daya dukung kawasan, dan daya dukung pemanfaatan ekowisata mangrove di Desa Taddan Kecamatan Camplong Kabupaten Sampang. Metode pengambilan data mangrove menggunakan transek garis dan plot (Line Transect Plot). Hasil penelitian mendapatkan jenis mangrove di lokasi penelitian adalah Rhizophora stylosa, Rhizophora mucronata, Rhizophora apiculata, Sonneratia alba, Avicennia marina, dan Aegiceras cornitulatum. Kesesuaian kawasan untuk dimanfaatkan sebagai kawasan ekowisata bahari kategori mangrove untuk semua stasiun pada kondisi sesuai bersyarat. Daya dukung kawasan menunjukkan hasil kemampuan suatu kawasan dalam menyediakan ruang bagi pemanfaatan sebanyak 199 orang per hari, sedangkan untuk per trip sebanyak 25 orang per trip. Daya dukung pemanfaatan dengan mempertimbangkan persentase kawasan untuk konservasi sebesar 10% maka diperoleh hasil sebanyak 20 orang per hari

scholarly journals Mangrove Community Characteristics and Local Fishermen’s Utilization in North Sulawesi Province: Case study on boat raft fishermen in Sauk village, Labuan Uki bay, Bolaang Mongondow regency

2016 ◽  
Vol 4 (2) ◽  
pp. 139
Author(s):  
Ridwan Lasabuda ◽  
Lawrence J. L. Lumingas ◽  
Rose O. S. E. Mantiri
Keyword(s):  
Fishing Ground ◽  
Density Level ◽  
Bruguiera Gymnorrhiza ◽  
Rhizophora Stylosa ◽  
Purposive Sampling ◽  
Rhizophora Apiculata ◽  
Sonneratia Alba ◽  
Mangrove Vegetation ◽  
Avicennia Officinalis ◽  
Vegetation Characteristic

This study aims to analyze the characteristics of mangrove vegetation in Sauk village, Labuan Uki bay, and to know the exploitation activities and the community’s perception on mangrove ecosystem. Mangrove vegetation characteristic data were collected using transect line method in 3 stations, while mangrove utilization and community’s perception data were obtained through field observation, questioners, and structured interviews. Respondent sampling used purposive sampling, and the respondents were representatively selected based on profession background as boat raft fishermen.Results showed that mangroves in Sauk village consisted of 8 species, Avicennia officinalis Aegiceras floridum, Rhizophora apiculata, R. mucronata, R. stylosa, Bruguiera gymnorrhiza, Sonneratia alba, and S. casiolari. The density level was 689 trees.ha-1 (categorized as rare according to the decree of Living Evironment Minister Numbered 201/2004) and the mean vegetation spread was 95.16 M widely available from 22.70 Ha.People used the mangrove for firewood, building materials, boat frame, fish drying place, net dye material (tree skin), dahannya dibuat wadah bunga buatan, and fishing ground. Some people of the village clear cut the mangroves for boat sailing route, despite violating Indonesian Law numbered 27/ 2007 jo Low numbered 1/2014 concerning coastal area and small islands management.Sixty percent of the respondents understood that mangroves can be cut for various benefits, 40% knew that mangrove area is source of income, 40% as source of firewood, 10% as place where fish lay their eggs, and 10% as coast protection from abrasion.Keyword : mangrove, boat raft fishermen, Sauk village, Labuan Uki bay.ABSTRAKPenelitian ini bertujuan untuk   menganalisis karaktersitik vegetasi mangrove yang ada di desa Sauk Teluk Labuan Uki dan  mengetahui aktivitas pemanfaatan serta  persepsi masyarakat tentang ekosistem mangrove. Data karakteristik vegetasi  mangrove diambil menggunakan metode transek line  di 3  stasiun. Sedangkan data pemanfaatan mangrove dan persepsi masyarakat dikumpulkan melalui teknik observasi lapangan, pengisian kuesioner dan wawancara terstruktur. Pengambilan sampel responden menggunakan metode purposive sampling. Responden dipilih secara representatif berdasarkan latar belakang profesi sebagai nelayan bagan perahuHasil penelitian menggambarkan bahwa mangrove yang ada di  desa Sauk terdiri dari 8  spesies : Avicennia officinalis (api-api), Aegiceras floridum (api-api), Rhizophora apiculata (lolaro), Rhizophora mucronata(lolaro), Rhizophora stylosa (lolaro), Bruguiera gymnorrhiza (ting), Sonneratia alba (lolaro)  dan Sonneratia casiolari (posi-posi). Tingkat kerapatan 689 pohon/ha (kategori jarang sesuai Kepmen Lingkungan Hidup No 201 Tahun 2004). Ketebalan vegetasi mangrove rata2 95,16 meter dari luas yang tersedia 22,70 Ha.Masyarakat memanfaatkan mangrove untuk : sumber kayu bakar, dibuat bahan bangunan, dibuat rangka kapal, tempat menjemur ikan, kulitnya sebagai pewarna jaring, dahannya dibuat wadah bunga buatan, tempat menangkap ikan dan biota air lainnya. Selain itu ada oknum masyarakat desa Sauk yang menebang mangrove untuk membuat lintasan perahu,  dimana kegiatan ini bertentangan dengan UU No.27 Tahun 2007 jo UU No.1 Tahun 2014 tentang Pengelolaan Wilayah Pesisir dan Pulau2 Kecil. 60 % responden memahami bahwa mangrove adalah tumbuhan yang bebas ditebang untuk dimanfaatkan berbagai kepentingan. 40 % responden memahami kawasan mangrove adalah sumber pencaharian masyarakat lokal, 40 % responden memahami sebagai sumber untuk mencari kayu bakar, 10 % responden memahami sebagai tempat bertelur ikan, dan 10 % responden memahami sebagai penahan abrasi pantai.Keyword : mangrove, nelayan bagan perahu, desa Sauk, Teluk Labuan Uki

scholarly journals Komposisi Jenis dan Populasi Burung Cendrawasih di Kampung Malagufuk Distrik Klayili Kabupaten Sorong Provinsi Papua Barat

2020 ◽  
Vol 7 (2) ◽  
pp. 151-162
Author(s):  
MAYA PATTIWAEL ◽  
AMATUS TUROT
Keyword(s):  
Species Composition ◽  
Bird Species ◽  
Line Length ◽  
Natural Forest ◽  
Line Transect ◽  
Natural Forests ◽  
Diverse Species ◽  
West Papua ◽  
Line Transect Method ◽  
Papua Barat

One of the animals that are easy to find is a bird. Based on data about the increase in the number of bird species, it can be ascertained that these animals can be found in every region in Indonesia, with diverse species and even species that are endemic to a certain area. West Papua is one of the regions in Indonesia which is rich in various species of birds, including Cendrawasih which can also be found in the Natural Forest of Malagufuk Village, Klayili District, Sorong Regency. Based on information from the surrounding community, several types of Cendrawasih are often seen in the natural forests of Malagufuk Village, but their diversity and population are not known with certainty. This study aims to determine the diversity of species and population of Cendrawasih birds in the natural forest of Malagufuk Village, Klayili District, Sorong Regency, West Papua. Thus, the results of this study are expected to be a source of data in the context of preserving and protecting the existing Cendrawasih species. Data collection on the species composition and population of Cendrawasih was carried out using the Line Transect method by making 10 observation lines with a line length of 500 m each and a distance between lines of 100 m. The results showed that there were found 3 spesies of Cendrawasih with estimated populations and densities as follows: Cendrawasih Kuning Kecil (Paradisaea minor) had an estimated population of 7.48 individuals with a density of 2.93 individuals / ha; Cendrawasih Raja (Cicinnurus regius) has an estimated population of 5 individuals with a density of 1.67 individuals / ha; and Toowa Cemerlang (Ptiloris magnificus) had an estimated population of 2.22 individuals with a density of 0.74 individuals / ha. When the research was carried out, it was seen that the three types of Cendrawasih used several types of trees as places for activities (playing or dancing), namely Matoa (Pometia coreacea), Merbau (Intsia bijuga), Damar (Agathis dammara). Beringin (Ficus benjamina), and Pala hutan (Myristica sp) with tree heights above 20 m.

scholarly journals Vegetation Structure and Damage Level Mangrove Forest in Manomadehe Island, Subdistrict South Jailolo, North Maluku Province

2021 ◽  
Vol 21 (1) ◽  
pp. 222
Author(s):  
Salim Abubakar ◽  
Riyadi Subur ◽  
Masykhur Abdul Kadir ◽  
Rina Rina ◽  
Adi Noman Susanto ◽  
...  
Keyword(s):  
Relative Density ◽  
Vegetation Structure ◽  
Mangrove Forest ◽  
Mangrove Forests ◽  
Mangrove Species ◽  
Rhizophora Stylosa ◽  
Xylocarpus Granatum ◽  
Sonneratia Alba ◽  
Mangrove Vegetation ◽  
Ceriops Tagal

Mangrove forest is a natural resource typical of tropical coasts, which has multiple benefits with a very broad impact when viewed from social, economic and ecological aspects. Management of natural resources must be very prudent because it takes a long time to be able to recover when damage / extinction has occurred. The purpose of this study was to determine the composition of mangrove species, the structure of mangrove forest vegetation (species density, relative density of species, frequency of species, relative frequency of species, species cover, relative cover of species and important values) and to determine the level of damage. Extraction of mangrove vegetation using the "spot check" method. The transects are drawn perpendicular to the coastline along the mangrove vegetation. The composition of mangrove species were 7 species, namely Rhizophora apiculata, R. stylosa, Bruguirea gymnorrhiza, Ceriops tagal, Sonneratia alba, Xylocarpus granatum and Aegiceras floridum. In the vegetation structure, the highest density and relative density were found in Rhizophora stylosa and the lowest was Xylocarpus granatum. The highest species and relative frequencies were Rhizophora stylosa, R. apiculata and the lowest were Bruguiera gymnorrhiza. The highest type and closure were Sonneratia alba and the lowest was Ceriops tagal. Meanwhile, the highest importance was in Sonneratia alba and the lowest was Xylocarpus granatum. Overall, the density value of mangrove species on Manomadehe Island is 2796 trees / ha so that the condition of the mangrove forests on Manomadehe Island is still in the good category (very dense).

scholarly journals Persentase tutupan dan struktur komunitas mangrove di sepanjang pesisir Taman Nasional Bunaken bagian utara

2017 ◽  
Vol 5 (3) ◽  
pp. 13
Author(s):  
Annice Anthoni ◽  
Joshian Schaduw ◽  
Calvyn Sondak
Keyword(s):  
Line Transect ◽  
Rhizophora Mucronata ◽  
Bruguiera Gymnorrhiza ◽  
Rhizophora Apiculata ◽  
Sonneratia Alba ◽  
Avicennia Officinalis

Tujuan dari penelitian ini adalah menghitung persentase tutupan mangrove dan mengetahui struktur komunitas mangrove. Penelitian ini dilakukan di sepanjang pesisir Taman Nasional Bunaken bagian Utara. Metode  yang di gunakan dalam penelitian ini  yaitu metode line transect dan metode hemisperichal photography. Data hasil penelitian ditemukan 6 jenis mangrove yaitu Sonneratia alba, Avicennia officinalis, Avecennia marina, Rhizophora apiculata, Rhizophora mucronata dan Bruguiera gymnorrhiza yang termasuk dalam 4 famili Sonneratiaceae, Avicenniaceae, Rhizophoraceae dan juga Bruguieraceae. Nilai tutupan kanopi mangrove yang tertinggi pada stasiun 2 (Meras)  di transek 2 mencapai nilai 82,78% dan yang terendah pada stasiun 1 (Molas)  di transek 1 yaitu 61,24%.

scholarly journals MANGROVE FOREST CONDITION IN PIRU BAY, WEST SERAM, MOLUCCAS

2016 ◽  
Vol 7 (2) ◽  
Author(s):  
Fasmi Ahmad
Keyword(s):  
Mangrove Forest ◽  
Local Community ◽  
Coastal Region ◽  
Mangrove Ecosystem ◽  
Line Transect ◽  
Mangrove Forests ◽  
Forest Condition ◽  
Rhizophora Apiculata ◽  
Sonneratia Alba ◽  
The Village

Information on condition and biodiversity of mangrove ecosystem to support a sustainable management of mangrove ecosystem is very important in the coastal region of Eti village, Piru Bay, West Seram, Molluccas. The purposes of this study were to determine the condition and biodiversity of mangrove ecosystem in the village of Eti, Gulf Piru. Filed data collection was conducted in November 2010 using the line transect method. The box size along the transects was made in accordance with its purposes such as 10 x 10 m2 for trees, 5 x 5 m2 for sapling, and 1 x 1 m2 for seed. The distance between the box transect was 25 m. Number of individuals of each species were counted and the diameter at the chest-height was also measured. Results showed that sixteen species were found within ten genera. There were 9 species of tree categories, 10 species of sapling categories, and 8 species of seed categories. The highest density and frequency of occurrence for the three categories was represented by Rhizophora apiculata, while the largest coverage percentage was represented by Sonneratia alba. The highest important value was also represented by Rhizophora apiculata. In general, the condition of mangrove forests in the village of Eti, Piru Bay was still relatively good, but the local community was very active to take advantage of these mangrove forests products such as charcoal, fencing, and wood that they sold every week. Therfore, it is necessary for local government efforts to protect the mangrove ecosystem from destructed activities of the local community.Keywords: mangrove forest, Rhizophora apiculata, Sonneratia alba, Teluk Piru, Molluucas

scholarly journals Konsep Co-Management dalam Pendekatan Pengelolaan Lingkungan Mangrove di Desa Lubuk Kertang, Brandan Barat, Sumatera Utara

2020 ◽  
Vol 5 (1) ◽  
pp. 129
Author(s):  
A Hadian Pratama Hamzah ◽  
Trisno Anggoro ◽  
Sri Puryono
Keyword(s):  
Management Strategies ◽  
Stakeholder Analysis ◽  
Avicennia Marina ◽  
Mangrove Ecosystem ◽  
Mangrove Forests ◽  
Rhizophora Stylosa ◽  
Rhizophora Apiculata ◽  
Importance Index ◽  
Sonneratia Alba ◽  
Mangrove Vegetation

Mangroves are one of the important coastal ecosystems that have various benefits and their uses are carried out by various stakeholders. This study aims to 1) find out and analyze the condition of mangrove resources and community beneficiaries, 2) analyze the roles and functions of each stakeholder, and 3) find out and analyze the form of co-management of mangrove ecosystem management in Lubuk Kertang Village, West Brandan, Langkat Regency. Mangrove vegetation data collection is done using the quadratic transect method; while taking socioeconomic, institutional, and interview data using survey and purposive sampling methods. Data obtained from mangrove vegetation include density, frequency, cover, and mangrove importance index. Stakeholder analysis using a matrix of interests and influences. Research shows there are 5 types of mangroves in Lubuk Kertang Village, namely Avicennia marina, Rhizophora mucronata, Rhizophora apiculata, Rhizophora stylosa and Sonneratia alba. Strategies in the context of expanding mangrove forests are with these types. Stakeholder analysis identified 16 stakeholders who were classified in 4 groups, namely subject, key players, crowd, and by standers. Mangrove management in Lubuk Kertang Village is still in the consultative stage. To improve effectiveness, management is directed at the cooperative level in the co-management spectrum with management strategies.

River Water Salinity and the Distribution of Mangrove Species Along Several Rivers in North Queensland

1982 ◽  
Vol 30 (4) ◽  
pp. 401 ◽  
Author(s):  
JS Bunt ◽  
WT Williams ◽  
HJ Clay
Keyword(s):  
River Water ◽  
Sea Water ◽  
Water Salinity ◽  
Mangrove Species ◽  
Rhizophora Stylosa ◽  
Excoecaria Agallocha ◽  
Nypa Fruticans ◽  
Sonneratia Caseolaris ◽  
Sonneratia Alba ◽  
Major Factors

It is well recognized that salinity is one of the major factors influencing the vegetation of mangrove swamps. Nonetheless, knowledge of the limits of salinity tolerance is limited to a relatively few species. Accordingly, observations were undertaken of the distributions of a number of mangrove species in a set of tidal rivers in northern Queensland. River water salinity measurements were used as the frame of reference to the observations. To the extent that generalizations are possible, tolerance of or adaptation to sea water appeared to lie in a series as follows: Rhizophora stylosa; R . apiculata; Sonneratia alba; Ceriops tagal > Aegiceras corniculatum; Bruguiera parviflora > Excoecaria agallocha; Rhizophora mucronata > Acrostichum sp.; Heritiera littoralis; Nypa fruticans > Barringtonia sp.; Bruguiera sexangula; Sonneratia caseolaris; (Hibiscus tiliaceus).

scholarly journals DAMPAK PEMBANGUNAN BREAKWATER TERHADAP STRUKTUR KOMUNITAS POLYCHAETA DI PESISIR PANTAI MANOKWARI, PAPUA BARAT

2019 ◽  
Vol 1 (2) ◽  
Author(s):  
Diana Elsa Albita Wambrauw ◽  
Keliopas Krey ◽  
Sita Ratnawati
Keyword(s):  
Community Structure ◽  
Coastal Area ◽  
Coastal Erosion ◽  
Research Data ◽  
Line Transect ◽  
Sea Waves ◽  
West Papua ◽  
Inshore Waters ◽  
Papua Barat ◽  
The Impact

ABSTRACTBreakwater is a small structures designed to protect coastal area from extremely sea waves exposure. The breakwater has been used in many coastal area at various town in Papua include Manokwari Regency, West Papua Province. Breakwaters designed at Manokwari has been reduce the intensity of wave action in inshore waters. Moreover, the breakwater also reduce coastal erosion and provide safe harbourage for local fishing. Same with the others, the breakwater on the coast of Manokwari also contact with the substrate directly, which is a habitat for Polychaeta. The lack of research data and information on Polychaeta in the Papua Sea encourages this research must be done. The purpose of this research is to identify the spesies of Polychaeta and analyze the impact of breakwater to the community structure of Polychaeta. This research conducted on March to June 2018 focus on six station of five beach with breakwater at the coastal of Manokwari, West Papua i.e. Abasi, Pasir Putih, Wosi, Andai and Mansinam Island. The line transect quadran method were use to collect sample of the Polychaeta. Total 64 sample of Polychaeta was collecting and identified.  Approximately 17 spesies of Polychaeta (i.e. seven orders, nine of families and 14 genera) already identified. Based on ANOVA and BNt tests, the breakwater development has significantly impacte to the structure community of Polychaeta on the coastal of Manokwari. ABSTRAKBreakwater atau pemecah gelombang merupakan struktur kecil yang didesain untuk melindungi area pesisir pantai dari paparan gelombang air laut yang ekstrim. Sama dengan lainnya, breakwater di pesisir pantai Manokwari juga bersentuhan langsung dengan substrat, yang merupakan habitat cacing laut, Polychaeta. Minimnya data penelitian dan informasi tentang Polychaeta di laut Papua mendorong penelitian ini dilakukan dengan tujuan mengidentifikasi spesies Polychaeta dan menganalisa dampak yang ditimbulkan dari breakwater terhadap struktur komunitas cacing taksa cacing laut ini. Penelitian ini dilaksanakan pada bulan Maret hingga Juni 2018 yang dipusatkan pada enam stasiun di lima pantai yang terdapat breakwater, yaitu pantai Abasi, Pasir Putih, Wosi, Andai dan pantai Pulau Mansinam. Garis transek kuadran sebagai metode pengambilan sampel Polychaeta. Sebanyak 64 sampel telah dikoleksi dan berhasil dikenali 17 spesies Polychaeta yang terbagi dalam tujuh ordo, sembilan familli dan 14 genus. Berdasarkan uji ANOVA dan Uji BNt menunjukan keselarasan pembangunan breakwater berdampak signifikan terhadap struktur komunitas Polychaeta di pesisir pantai Manokwari.

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