DENSITY AND THE COVERAGE OF SEAGRASS ECOSYSTEM IN BAHOI VILLAGE COASTAL WATERS, NOTRH SULAWESI

2017 ◽  
Vol 9 (1) ◽  
pp. 375-383 ◽  
Author(s):  
Muh. Fahruddin ◽  
Fredinan Yulianda ◽  
Isdradjad Setyobudiandi
Keyword(s):  
Coastal Waters ◽  
Seagrass Species ◽  
Reef Habitat ◽  
Thalassia Hemprichii ◽  
Halophila Ovalis ◽  
Seagrass Ecosystem ◽  
Seagrass Cover ◽  
Cymodocea Rotundata ◽  
Syringodium Isoetifolium ◽  
Coral Reef Habitat

Physical seagrass ecosystem damage have been reported in various regions in Indonesia. Seagrass ecosystem damage is caused by human activity such as trampling seagrass and boats that muddy the waters and reduced the density and seagrass cover. This study aims to provide information about the density and the coverage of seagrass. The method used in this research is the transect method measuring 50x50 cm squared at three different locations by considering coastal ecosystems Bahoi village that already exist. Station 1 is near to mangrove habitat, station 2 is right on seagrass habitats, and station 3 is near to coral reef habitat. The results indicated there is six seagrass species that found in the Bahoi village which is Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Syringodium isoetifolium, Halophila ovalis, and Halodule uninervis. The density and seagrass cover is shows that the station 1 has the highest density and seagrass cover percentage compared with the other stations. The highest density of seagrass species located in station 1 with 955 individuals/m2, and the lowest was located at station 3 with 699 individuals/m2. While the highest cover percentage is located at station 1 with 270% and the lowest located at station 3 with 229%. Keyword: seagrass ecosystem, density, coverage, Bahoi

scholarly journals DENSITY AND THE COVERAGE OF SEAGRASS ECOSYSTEM IN BAHOI VILLAGE COASTAL WATERS, NOTRH SULAWESI

2017 ◽  
Vol 9 (1) ◽  
pp. 375
Author(s):  
Muh. Fahruddin ◽  
Fredinan Yulianda ◽  
Isdradjad Setyobudiandi
Keyword(s):  
Coastal Waters ◽  
Seagrass Species ◽  
Reef Habitat ◽  
Thalassia Hemprichii ◽  
Halophila Ovalis ◽  
Seagrass Ecosystem ◽  
Seagrass Cover ◽  
Cymodocea Rotundata ◽  
Syringodium Isoetifolium ◽  
Coral Reef Habitat

<p><em>Physical seagrass ecosystem damage have been reported in various regions in Indonesia. Seagrass ecosystem damage is caused by human activity such as trampling seagrass and boats that muddy the waters and reduced the density and seagrass cover. This study aims to provide information about the density and the coverage of seagrass. The method used in this research is the transect method measuring 50x50 cm squared at three different locations by considering coastal ecosystems Bahoi village that already exist. Station 1 is near to mangrove habitat, station 2 is right on seagrass habitats, and station 3 is near to coral reef habitat. The results indicated there is six seagrass species that found in the Bahoi village which is Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Syringodium isoetifolium, Halophila ovalis, and Halodule uninervis. The density and seagrass cover is shows that the station 1 has the highest density and seagrass cover percentage compared with the other stations. The highest density of seagrass species located in station 1 with 955 individuals/m<sup>2</sup>, and the lowest was located at station 3 with 699 individuals/m<sup>2</sup>. While the highest cover percentage is located at station 1 with 270% and the lowest located at station 3 with 229%.</em></p><p><em> </em></p><p><strong><em>Keyword: </em></strong><em>seagrass ecosystem, density, coverage, Bahoi</em></p>

scholarly journals Relationship of Distribution Seagrass Species with Dugong (Dugong dugon) Sighting at Liki Island-Papua

Omni-Akuatika ◽  
2019 ◽  
Vol 15 (2) ◽  
pp. 92
Author(s):  
Aditya Hikmat Nugraha ◽  
Ilham Antariksa Tasabaramo ◽  
Udhi E Hernawan ◽  
Susi Rahmawati ◽  
Andri Irawan ◽  
...  
Keyword(s):  
Line Transect ◽  
Seagrass Species ◽  
Thalassia Hemprichii ◽  
Halophila Ovalis ◽  
Seagrass Ecosystem ◽  
Island Station ◽  
Halodule Uninervis ◽  
Cymodocea Rotundata ◽  
Syringodium Isoetifolium ◽  
Relationship Of

Dugong dugon is a herbivorous marine mammal. One of Dugong's favorite foods is seagrass. This study examines the distribution of seagrass species to dugong sighting in Liki Island. The study was conducted in November 2018. Observation of seagrass conditions was carried out using a line transect method and a 50x50 cm transect with a distance interval between 10 m plots. Interviews were also conducted with the community to find out the location of Dugong presence in Liki Island. There are seven species of seagrass found in Liki Island :Enhalus acoroides, Cymodocea rotundata, Thalassia hemprichii, Halophila ovalis, Halodule uninervis, Halodule pnifolia and Syringodium isoetifolium spread over four observation stations. The results showed that  Dugong in Liki Island is often found during the eastern season, they often appear in seagrass ecosystem area to do eating activities. Dugong is often found in the eastern part of Liki Island (Station 4) and sometimes also found in the western part of Liki Island (Station 3).Keywords:biodiversity,Dugong dugon, liki, papua, seagrass

scholarly journals The Inventory of Seagrasses in Marine Field Station of Faculty of Fisheries and Marine Science in Subdistrict of East Likupang District North Minahasa

2018 ◽  
Vol 6 (2) ◽  
pp. 38
Author(s):  
Stevani Rawung ◽  
Ferdinand F Tilaar ◽  
Ari B Rondonuwu
Keyword(s):  
Seagrass Species ◽  
Thalassia Hemprichii ◽  
Field Station ◽  
Enhalus Acoroides ◽  
Halophila Ovalis ◽  
Halodule Uninervis ◽  
Cymodocea Rotundata ◽  
Syringodium Isoetifolium ◽  
Random Survey ◽  
Cymodocea Serrulata

This study was conducted in Marine Field Station of Faculty of Fisheries and Science of Sam Ratulangi University, Sub-district of East Likupang, North Minahasa. This study aims to identified the seagrasses in the water of Marine Field Station. The benefits of this study are for the database of seagrasses ecosystem management and comparative for other studies. The Observation and data collection was using random survey technic by analyzed the areas to collecting all the seagrass species found. Furthermore, the seagrass samples were categorised into each species. The result showed the amount of seagrass species in Marine Field Station are 8 species from 6 genera and 2 families: Cymodocea rotundata, Cymodocea serrulata, Halodule uninervis, Syringodium isoetifolium, Thalassia hemprichii, Enhalus acoroides,  Halophila ovalis, dan Halophila minor.Keyword: Inventory, Seagrass, Marine Field Station ABSTRAKPenelitian dilakukan di perairan Marine Field Station Fakultas Perikanan dan Ilmu Kelautan Unsrat Kecamatan Likupang Timur Kabupatan Minahasa  Utara. Tujuan penelitian  untuk mengidentifikasi lamun yang ada di Perairan Marine Field station. Manfaat penelitian dapat menjadi data pengelolaan ekosistem padang lamun dan dapat menjadi perbandingan untuk penelitian-penelitian selanjutnya. Pengamatan dan pengambilan sampel menggunakan teknik survei jelajah, yaitu dengan menjelajahi wilayah pengamatan sambil mencari semua spesies lamun. Lamun yang diambil adalah semua jenis yang ditemui. Selanjutnya, sampel lamun dikelompokan berdasarkan spesies. Hasil pengamatan menunjukkan jumlah spesies lamun pada lokasi penelitian di Perairan Marine Field Station adalah 8 spesies dari 6 genera dan 2 famili yaitu, Cymodocea rotundata, Cymodocea serrulata, Halodule uninervis, Syringodium isoetifolium, Thalassia hemprichii, Enhalus acoroides,  Halophila ovalis, dan Halophila minor. Kata kunci: Inventarisasi, Lamun, Marine Field Station

scholarly journals Community Structure of Seagrass Meadows In Mantehage Island Waters, North Sulawesi

2014 ◽  
Vol 1 (4) ◽  
pp. 177
Author(s):  
Simon I Patty ◽  
Husen Rifai
Keyword(s):  
Diversity Index ◽  
Seagrass Species ◽  
Thalassia Hemprichii ◽  
Seagrass Meadows ◽  
North Sulawesi ◽  
Halophila Ovalis ◽  
Cymodocea Rotundata ◽  
Syringodium Isoetifolium ◽  
Species Composition And Distribution ◽  
Thalassodendron Ciliatum

Research on the structure of seagrass communities in the waters of the island Mantehage was conducted in September 2010. The purpose of this study is to collect data and information on the structure of seagrass communities. Observations includes the identification seagrass species, measuring the number of individual/stand, cover percentage of each type/species on the transect. 6 types of seagrass found, i.e. Enhalus acoroides, Halophila ovalis, Thalassia hemprichii, Thalassodendron ciliatum, Cymodocea rotundata and Syringodium isoetifolium. Seagrass species composition and distribution varies at each location and is dominated by the presence of Thalassia hemprichii (48.14%) with coverage percentage ranges between 15.91% to 35.11%. Diversity index values ranged from 0.79 to 1.69 ; evenness index between 0.57 to 0.94 and the index of dominance between 0.20 to 0.56. In conclusion, the condition of seagrass meadows in Mantehage island is relatively good and can support marine life adequately.Keywords : Structure communities, seagrass, Mantehage Island

scholarly journals KAJIAN KOMUNITAS EKOSISTEM LAMUN DI SEMENANJUNG TARABITAN KECAMATAN LIKUPANG BARAT KABUPATEN MINAHASA UTARA

2021 ◽  
Vol 9 (2) ◽  
pp. 24
Author(s):  
Risandi D Sitaba ◽  
Carolus P Paruntu ◽  
Billy Theodorus Wagey
Keyword(s):  
Species Composition ◽  
Percent Cover ◽  
Seagrass Beds ◽  
Seagrass Species ◽  
Thalassia Hemprichii ◽  
Enhalus Acoroides ◽  
Halophila Ovalis ◽  
Halodule Uninervis ◽  
Cymodocea Rotundata ◽  
Syringodium Isoetifolium

This research was conducted in the waters of Tarabitan Peninsula, West Likupang North Minahasa using quadants transect method. The purpose of this study was to determine the community structure of seagrass found in that waters as initial information for sustainable management seagrass ecosystem . Field observation was conducted to identify the seagrass species, number of individuals/shoots, percent cover for each type of seagrass in those plotting quadrants. The result of this study documented 6 types of seagrass namely, Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Syringodium isoetifolium, Halophila ovalis and Halodule uninervis. The species composition and distribution of seagrass were varied and was dominated by Thalassia hemprichii was the most dominant seagrass species with a relative density of 55.55%, a relative frequency of 33.67%, 39.92% relative cover, an important value index of 129.03%, a diversity index of 1.30 belonging to this condition, moderate, the uniformity index of 0.72 is classified as high and the dominance index of 0.2 is classified as low. Based on Minister of Environment Decree Republic Indonesia No. 200 of 2004 concerning the status of seagrass beds, the condition of the seagrass beds in the waters of Tarabitan Village is classified as rich / healthy with a cover value of ≥ 60. Keywords : Seagrass Community, Species Composition,  distribution, Tarabitan Peninsula           Penelitian ini dilakukan di perairan Semenanjung Tarabitan Likupang Barat Minahasa Utara dengan menggunakan metode transek kuadran. Tujuan penelitian ini adalah untuk mengetahui struktur komunitas lamun yang terdapat di perairan tersebut sebagai informasi awal untuk pengelolaan lamun secara berkelanjutan. Pengamatan lapangan dilakukan untuk mengidentifikasi jenis lamun, jumlah individu/tegakan, persentase tutupan tiap jenis lamun pada tiap kuadran. Hasil penelitian ini mendokumentasikan 6 jenis lamun yaitu Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Syringodium isoetifolium, Halophila ovalis dan Halodule uninervis. Komposisi jenis dan sebaran lamun bervariasi dan didominasi oleh jenis lamun Thalassia hemprichii merupakan jenis lamun yang paling dominan dengan kerapatan relatif 55,55%, frekuensi relatif 33,67%, tutupan relatif 39,92%, indeks nilai penting 129,03%, indeks keanekaragaman 1,30 tergolong dalam kondisi sedang, indeks keseragaman 0,72 tergolong tinggi dan indeks dominansi 0,2 tergolong rendah. Berdasarkan Keputusan Menteri Lingkungan Hidup Nomor 200 Tahun 2004, kondisi padang lamun di perairan Desa Tarabitan tergolong kaya / sehat dengan nilai tutupan ≥ 60.Kata Kunci: Komunitas Lamun, Komposisi Jenis, Distribusi, Semenanjung Tarabitan

POTENSI EKOSISTEM PADANG LAMUN DI KAWASAN WISATA BAHARI GUGUSAN PULAU PARI, DKI JAKARTA

2018 ◽  
Vol 12 (03) ◽  
pp. 59-70
Author(s):  
Aditano Yani Retawimbi
Keyword(s):  
Field Research ◽  
Tourist Attraction ◽  
Percent Cover ◽  
Thalassia Hemprichii ◽  
Marine Tourism ◽  
Halophila Ovalis ◽  
Seagrass Ecosystem ◽  
Cymodocea Rotundata ◽  
Syringodium Isoetifolium ◽  
Descriptive Method

Marine Tourism Area at Pari Island cluster has a variety of ecosystems, one of them is the seagrass ecosystem. Seagrass is one of the coastal and marine resources, which has the potential to be developed as a resource for tourist attraction in the marine tourism area of Pari Islands. Purpose this study is to describe seagrass conditions, is it worthed to be used as a tourist attraction by conducting field research of species composition, distribution, percent cover at marine tourism territory Pari Islands, DKI Jakarta. The study was conducted from April-May 2017 with the descriptive method, where this method is done by describing or describe seagrass conditions. Survey and field data acquisition carried out in Pari Islands at 10 stations using the quadrant transect method. Based on field observation, in the field was found 5 species of seagrass species Cymodocea rotundata, Enhalus acoroides, Halophila ovalis, Syringodium isoetifolium and Thalassia hemprichii that can be a potential attraction for marine tourism. The results of calculations percent cover of seagrass shows that the highest percent cover was at station 9 with total percent was 76,2 %, while the lowest percent cover was at station 2, amounting to 20,4 %. Keywords: Marine Tourism, Pari Islands, Seagrass Beds

scholarly journals KOMUNITAS LAMUN DI PERAIRAN PANTAI DESA ORI, MALUKU TENGAH

2021 ◽  
Vol 17 (2) ◽  
pp. 97-103
Author(s):  
Sarah Haumahu ◽  
Frijona F Lokollo ◽  
Reni Ambon
Keyword(s):  
Coastal Waters ◽  
Line Transect ◽  
Seagrass Species ◽  
Thalassia Hemprichii ◽  
Enhalus Acoroides ◽  
Seagrass Community ◽  
Halophila Ovalis ◽  
The World ◽  
Cymodocea Rotundata ◽  
Frequency Of Occurence

Seagrass communities play an important role in marine environments and estuary area, supporting communities of fish, snails and shellfish and other invertebrates. The diversity of seagrass species in the world is very low (<60 species). The coastal waters of Ori Village have a seagrass community that has never been studied. The purpose of this study was to estimate the structure of the seagrass community in the coastal waters of Ori Village, Central Maluku which includes the composition of type, density, frequency of occurence and percent of coverage. Seagrass sampling uses the line transect method. Five species of seagrass were found during the study grouped into two families: Cymodoceaceae and Hydrocharitaceae. The seagrass species found were Cymodocea rotundata, Halodule pinifolia, Enhalus acoroides Halophila ovalis and Thalassia hemprichii. T. hemprichii and E. acoroides have the highest densities (157 shoots/m2 and 137 shoots/m2, respectively). E. acoroides and T. hemprichii also have the highest frequency of occurence and relative coverage percent compared to other seagrass species found in the waters of Ori Village. Seagrass community in the waters of Ori Village is classified in a tight condition until dense.   ABSTRAK Komunitas lamun memegang peranan penting di lingkungan laut dan daerah estuari, menyokong komunitas ikan, siput dan kerang-kerangan serta invertebrata lainnya. Keragaman spesies lamun di dunia sangat rendah (<60 spesies). Perairan pantai Desa Ori memiliki komunitas lamun yang belum pernah diteliti. Tujuan dari penelitian ini adalah untuk mengestimasi struktur komunitas lamun di perairan pantai Desa Ori, Maluku Tengah yang meliputi komposisi jenis, kerapatan, frekuensi kehadiran dan persen penutupan. Pengambilan sampel lamun menggunakan metode transek garis. Lima spesies lamun ditemukan selama penelitian yang dikelompokan dalam dua famili yaitu famili Cymodoceaceae dan Hydrocharitaceae. Spesies-spesies lamun yang ditemukan adalah Cymodocea rotundata, Halodule pinifolia, Enhalus acoroides Halophila ovalis danThalassia hemprichii. T. hemprichii dan E. acoroides memiliki kerapatan tertinggi (masing-masing 157 tegakan/m2 dan 137 tegakan/m2). E. acoroides dan T. hemprichii juga memiliki frekuensi kehadiran serta persen penutupan relatif tertinggi dibanding spesies-spesies lamun lainnya yang ditemukan di perairan Desa Ori. Komunitas lamun di perairan Desa Ori tergolong dalam kondisi rapat sampai padat.   Kata Kunci: Lamun, komunitas, kerapatan, penutupan, Maluku Tengah      

scholarly journals STRUKTUR DAN ASOSIASI JENIS LAMUN DI PERAIRAN PULAU-PULAU HIRI, TERNATE, MAITARA DAN TIDORE, MALUKU UTARA

2018 ◽  
Vol 10 (3) ◽  
pp. 651-665 ◽  
Author(s):  
Yunita Ramili ◽  
Dietriech G. Bengen ◽  
Hawis Madduppa ◽  
Mujizat Kawaroe
Keyword(s):  
Coastal Region ◽  
Line Transect ◽  
Small Islands ◽  
Seagrass Species ◽  
Thalassia Hemprichii ◽  
Enhalus Acoroides ◽  
Halophila Ovalis ◽  
Cymodocea Rotundata ◽  
Syringodium Isoetifolium ◽  
Distribution Composition

ABSTRAKKeberadaan ekosistem lamun di perairan pesisir pulau-pulau kecil berperan penting sebagai habitat dan penyedia sumber daya ikan, serta pelindung garis pantai dan daratan pulau-pulau kecil tersebut. Penelitian ini bertujuan untuk menganalisis sebaran, komposisi, kerapatan, penutupan dan asosiasi jenis lamun di perairan pulau-pulau kecil Hiri, Ternate, Maitara dan Tidore, Maluku Utara. Pengambilan data dengan menggunakan metode transek garis dan transek kuadrat. Selanjutnya data dianalisis dengan menggunakan bantuan perangkat lunak MS Excel dan XLstat. Hasil penelitian menunjukkan bahwa Pulau Tidore memiliki jumlah jenis lamun terbanyak yakni delapan jenis lamun dari sembilan jenis lamun yang ditemukan di seluruh lokasi penelitian. Tiga jenis lamun yaitu, Enhalus acoroides, Thalassia hemprichii dan Cymodocea rotundata, menyebar luas dan terdapat di keempat pulau tersebut. Komposisi, kerapatan dan penutupan jenis lamun bervariasi antar stasiun penelitian. Vegetasi lamun yang ditemukan di lokasi penelitian berupa vegetasi campuran yang terdiri dari tiga sampai delapan jenis lamun. E. acoroides banyak ditemukan di Stasiun Mtr1 dan Tte2 tidak berasosiasi dengan spesies lainnya, demikian juga dengan C. serrulata yang ditemukan di Stasiun Mtr2 dan T. hemprichii di Stasiun Tdr2 dan Tdr3. Asosiasi C. rotundata dan Syiringodium isoetifolium terlihat di stasiun Tdr1 dan Hr1, sementara Halophila ovalis dan H. spinulosa  tidak menunjukkan asosiasi dengan jenis lamun lainnya di lokasi penelitian. Secara keseluruhan kondisi lingkungan perairan di keempat pulau tersebut masih tergolong baik dan mampu mendukung ekosistem lamun. ABSTRACTThe existence of seagrass ecosystems in the coastal region of small islands has been playing an essential role as a habitat and the supplier of fish resources, as well as a shore and coastline protector of small islands. This study aimed to  determine the distribution, composition, density, coverage, and associations of seagrass plant in the islands of Hiri, Ternate, Maitara, and Tidore. Data were collected by using line transect method and quadrate transect. Furthermore, data were analyzed by using MS Excel and XLstat software. The results showed that Tidore Island has the highest number of seagrass species namely eight from nine species of seagrasses found in all research sites. Three species of seagrasses, Enhalus acoroides, Thalassia hemprichii, and Cymodocea rotundata, were widespread in all four islands. The composition, density and coverage of seagrass species varied among research stations. Vegetation of seagrasses found in the study site in the form of mixed vegetation consisting of three to eight species. Enhalus acoroides found mostly in Mtr1 and Tte2 stations were not associated with other seagrass species, nor Cymodocea serrulata that found in Mtr2 Station and T. hemprichii at Tdr2 and Tdr3 stations. The associations of C. rotundata and Syringodium isoetifolium were observed at Tdr1 and Hr1 Stations. While Halophila ovalis and Halophila spinulosa showed no association with other seagrass species at the study area. Overall the condition of the marine environment on the four islands is still relatively good and able to support the life of the seagrass ecosystem.

scholarly journals Kajian Kondisi Lamun Pada Perairan Pantai Waemulang Kabupaten Buru Selatan

2020 ◽  
Vol 9 (1) ◽  
pp. 11
Author(s):  
Efraim Samson Samson ◽  
Daniati Kasale ◽  
Deli Wakano
Keyword(s):  
Coastal Waters ◽  
Vegetation Structure ◽  
Diversity Index ◽  
Environmental Parameters ◽  
Seagrass Species ◽  
Thalassia Hemprichii ◽  
Enhalus Acoroides ◽  
Halophila Ovalis ◽  
A Value ◽  
Cymodocea Rotundata

Research of seagrass vegetation structure has been carried out in Waemulang Coastal Waters, South of Buru Regency. This explorative study uses a linear quadrate transect method with 13 transect lines that are mounted perpendicular to the coastline, starting from the highest tide to the lowest tide. The results showed mixed vegetation types with species composition consisting of 5 seagrass species, namely: Enhalus ocoroides, Halophila ovalis, Thalassia hemprichii, Cymodocea serrulata and Cymodocea rotundata, which are members of 2 orders, 2 families, and 4 genera of seagrasses. The species that are most commonly found and have a value of density, relative density, frequency type, relative frequency, percentage of cover, relative closure, and index of important value which is higher, namely Enhalus acoroides, while the lowest, namely Halophila ovalis. In addition, the diversity index of seagrass species is 1,493, or belongs to medium category and the dominance index of seagrass species is 0.239, or there is no dominance of species. It can be concluded that the seagrass vegetation structure in Waemulang Coastal Waters is still relatively stable and Enhalus acoroides is the most influential seagrass species in the growing community. Environmental parameters are very supportive for seagrass growth in this area.

scholarly journals Keanekaragaman Lamun di Pesisir Pantai Molas, Kecamatan Bunaken Kota Manado (Biodiversity of Seagrass on Molas Seashore in Bunaken Subdistrict, Manado)

2012 ◽  
Vol 2 (1) ◽  
Author(s):  
Pience Veralyn Maabuat
Keyword(s):  
Diversity Index ◽  
Seagrass Species ◽  
Thalassia Hemprichii ◽  
Enhalus Acoroides ◽  
Transect Line ◽  
Halophila Ovalis ◽  
Wiener Diversity Index ◽  
Cymodocea Rotundata ◽  
Syringodium Isoetifolium ◽  
Index Value

AbstrakEkosistem lamun merupakan salah satu ekosistem bahari yang produktif. Selain sebagai sumber produktifitas primer di perairan, ekosistem lamun juga memiliki arti penting bagi hewan yang hidup di area padang lamun. Penelitian ini dilaksanakan di Pesisir Pantai Molas dengan menggunakan metode garis transek kuadrat, yang dilakukan pada bulan Januari – Juni 2011. Analisis data meliputi perhitungan dengan rumus Krebs dan Fachrul, identifikasi jenis lamun dan penentuan indeks keanekaragaman menggunakan Shannon Wiener. Ada lima jenis lamun yang ditemukan yaitu Enhalus acoroides, Thalassia hemprichii, Halophila ovalis, Cymodocea rotundata dan Syringodium isoetifolium. Lamun E. acoroides dan S. isoetifolium memiliki penyebaran terluas, karena ditemukan di seluruh transek pada lokasi penelitian. Jenis yang jarang dijumpai adalah H. ovalis. Jumlah individu yang ditemukan adalah 130 individu. Nilai indeks keanekaragaman di pesisir Pantai Molas memperlihatkan di wilayah ini keanekaragaman jenis lamun sedang dibandingkan 13 lokasi lainnya di Indonesia.Kata kunci: biodiversitas, Molas, rumput lautAbstractSeagrass ecosystem is one of the productive marine ecosystems. This ecosystem is a source of primary productivity in waters and it is significant for the animals that live in the seagrass areas. This study was conducted in the Molas coastal using the method of transect line squares, in January-June 2011. The analysis included calculation using the formula of Krebs and Fachrul, identification of seagrass species and determination Shannon Wiener diversity index. Five species of seagrass species were found, i.e. Enhalus acoroides, Thalassia hemprichii, Halophila ovalis, Cymodocea rotundata and Syringodium isoetifolium. The total number of individual weres 130. Index value of diversity in the Molas coastal showed that the seagrass diversity in this region were medium compared with 13 other locations in Indonesia.Key Words : biodiversity, Molas, seagrass

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