Kajian Kesesuaian Lahan Ekowisata Mangrove Di Desa Arakan Kabupaten Minahasa Selatan Sulawesi Utara

Angelitha O.T Iskandar; Joshian N.W Schaduw; Natalie D.C Rumampuk; Calvyn F.A Sondak; Veibe Warouw; Ari Rondonuwu

doi:10.35800/jplt.7.1.2019.23456

Kajian Kesesuaian Lahan Ekowisata Mangrove Di Desa Arakan Kabupaten Minahasa Selatan Sulawesi Utara

JURNAL PESISIR DAN LAUT TROPIS ◽

10.35800/jplt.7.1.2019.23456 ◽

2019 ◽

Vol 7 (1) ◽

pp. 40 ◽

Cited By ~ 1

Author(s):

Angelitha O.T Iskandar ◽

Joshian N.W Schaduw ◽

Natalie D.C Rumampuk ◽

Calvyn F.A Sondak ◽

Veibe Warouw ◽

...

Keyword(s):

Community Structure ◽

Canopy Cover ◽

Land Suitability ◽

Line Transect ◽

Hemispherical Photography ◽

North Sulawesi ◽

A Value ◽

Line Transect Method ◽

Important Value Index

Study Of Land Suitability For Mangrove Ecotourism In Arakan Village, Minahasa Selatan District, North Sulawesi The purpose of this study was to determine community structure, mangrove canopy cover and land suitability of mangrove ecotourism. This study used the line transect method for mangrove community structure, interviews for questionnaires and hemispherical photography for the percentage of mangrove cover. The results of the study on mangrove community structure showed that The highest important value index is found in transect 3, namely R. stylosa with value of 292,935 and the lowest on transect 3 is A. officinalis with a value of 7.065. For the suitability of mangrove ecotourism land shows that all transects belong to the suitable category with value of 55.74% on transect 1, 65.57% on transect 2, 68.85% on transect 3, 63.93% on transect 4 and 68.85% on transect 5.Keywords: Mangrove, Ecotourism, Arakan Village Tujuan dari penelitian ini adalah untuk mengetahui struktur komunitas, tutupan kanopi mangrove dan kesesuaian lahan ekowisata mangrove. Penelitian ini menggunakan metode line transek terhadap struktur komunitas mangrove, wawancara untuk kuisioner dan hemispherical photography untuk persentase tutupan mangrove. Hasil penelitian struktur komunitas mangrove yaitu indeks nilai penting tertinggi terdapat pada transek 3 jenis R.stylosa 292.935 dan terendah pada transek 3 jenis A.officinalis 7.065. Untuk kesesuaian lahan ekowisata mangrove bahwa pada semua transek masuk kategori sesuai dengan nilai kesesuaian transek 1 55.74%, transek 2 nilai 65.57%, transek 3 nilai 68.85%, transek 4 nilai 63.93% dan transek 5 nilai 68.85%.Kata kunci: Mangrove, Ekowisata, Desa Arakan.

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KEANEKARAGAMAN DAN KEPADATAN ECHINOIDEA DAN ASTEROIDEA DI RATAAN TERUMBU KARANG PERAIRAN TONGKAINA DAN BAHOWO KOTA MANADO (

JURNAL PESISIR DAN LAUT TROPIS ◽

10.35800/jplt.9.1.2021.33075 ◽

2021 ◽

Vol 9 (1) ◽

pp. 11

Author(s):

Ailen Imanuel Eman ◽

Erly Yosef Kaligis ◽

Chatrien Annita Luzianna Sinjal ◽

Billy Theodorus Wagey

Keyword(s):

Coral Reef ◽

Relative Frequency ◽

Reef Flat ◽

Essential Role ◽

Relative Number ◽

Line Transect ◽

A Value ◽

Line Transect Method ◽

Important Value Index ◽

Linckia Laevigata

The waters of Tongkaina, which are part of northern Manado's waters, are known to have mangrove, seagrass, and seaweed ecosystems. Therefore efforts are needed to manage the population and diversity of echinoderms in these waters. Echinoderms' ecology has an essential role in maintaining the marine ecosystem's balance, which plays a role in recycling nutrients. This study aimed to determine diversity, species density, species relative density, species frequency, species relative frequency, dominance, and the index of importance of Echinoidea and Asteroidea's species in the waters of the Tongkaina Village and their density. The method used in this research is the quadratic line transect method. First of all, the survey was conducted to the sampling site's location in the coral reef flats of Tongkaina Village's waters, including Tongkaina beach and Bahowo beach, before operating the sampling. Then the observation stations were determined, namely Tongkaina waters (near Batu Meja) and Bahowo waters. The quadratic line transect method is used in this research. Species of class Echinoidea and Asteroidea in the quadrat were recorded among the total of individuals, and the species is documented. This study's results indicate that six species were found, including the survey, and five species were found based on the line transect method with 182 individuals. Including Asteroidea 85 Individuals and Echinoidea 99 Individuals. Value of Diversity at station 1 has a value of H '= 1.170 with a dominance of C = 0.364, while at Station 2 has a value of H' = 1.232 and dominance value of C = 0.316. the highest density in Station 1 is Diadema savigny 1.967 ind/m2 relative 50.86%, and Linckia laevigata with the highest frequency Fi = 0.533. The highest important value index is Diadema savigny, with a value of 81.09%, while at station 2, the Protoreaster nodosus has the highest value of important value index with a value of 87.51%. These species also have the highest density of 0.933 ind/m2 and a relative number of 41.79%.Keywords: Tongkaina, Echinoderm, Line Transect Quadrat Method, Asteroidea, Echinoidea, Coral Reef Flat

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KAJIAN KESESUAIAN LAHAN EKOWISATA MANGROVE DIMENSI EKOLOGI ( KASUS PADA PULAU BUNAKEN BAGIAN TIMUR, KELURAHAN ALUNG BANUA, KECAMATAN BUNAKEN KEPULAUAN, KOTA MANADO)

JURNAL PESISIR DAN LAUT TROPIS ◽

10.35800/jplt.7.3.2019.24257 ◽

2019 ◽

Vol 7 (3) ◽

pp. 129

Author(s):

Kiki Nadila Bacmid ◽

Joshian N W Schaduw ◽

Veibe Warouw ◽

Surya Darwisito ◽

Erly Y Kaligis ◽

...

Keyword(s):

Community Structure ◽

Local Community ◽

Canopy Cover ◽

Economic Benefits ◽

Line Transect ◽

Mangrove Forests ◽

Hemispherical Photography ◽

Tourist Attractions ◽

Rare Category ◽

Index Value

Ecotourism as a form of tourism that emphasizes responsibility for nature conservation, provides economic benefits and maintains cultural needs for the local community. Mangrove forests with their uniqueness are natural resources that have the potential to be used as tourist attractions. The purpose of this study was to determine community structure, mangrove canopy cover and suitability of mangrove ecotourism land. This study used the line transect method for mangrove community structure, and hemispherical photography for the percentage of mangrove cover. The results of the study of the mangrove community structure were the highest density value, namely at station 1 on the transect 2 types of S.alba 0.16 ind / m2 relative 88.89% and the lowest density value in the type R. mucronata and R.apiculata 0.01 ind / m2 relatively 5.56% on transect 2 at station 1. The highest frequency type value at station 1 on the transect 1 type S. alba which is 1.00 relative 100% and the lowest frequency at station 1 transect 2 types R, piculate which is relative 0.50 33.33. The highest closing value of type on transect 2 standard 1 type S. alba 10.26 relative value 92.63%. Whereas the lowest type 3 transect closure is type R. piculate 0.49 the relative is 7.86%. The highest Important Value Index is at station 1 on transect 1, namely type S. alba 300 and lowest at station 1 on transect 2 types R. mucronata 30.55. The highest diversity value on transect 2, 0.43. Evenness index value (E) at station 1 on transect 1 is 0 and transect 2 is 0.39. While station 2 on transect 1 0 and transect 2 0.51. regarding the criteria for mangrove damage, at 2 stations included in the rare category with inya 50% canopy cover. The overall results of land suitability for coastal tourism in the Bunaken Island mangrove tourism category fall into the very appropriate category.Keywords: Mangrove, Ecotourism, Bunaken IslandEkowisata sebagai suatu bentuk wisata yang menekankan tanggung jawab terhadap kelestarian alam, memberikan manfaat secara ekonomi dan mempertahankan kebutuhan budaya bagi masyarakat setempat. Hutan mangrove dengan keunikan yang dimilikinya, merupakan sumberdaya alam yang sangat berpotensi untuk dijadikan sebagai tempat kunjungan wisata. Tujuan dari penelitian ini adalah untuk mengetahui struktur komunitas, tutupan kanopi mangrove dan kesesuaian lahan ekowisata mangrove. Penelitian ini menggunakan metode line transek terhadap struktur komunitas mangrove, dan hemispherical photography untuk persentase tutupan mangrove. Hasil penelitian struktur komonitas mangrove yaitu Nilai kerapatan tertinggi yaitu pada stasiun 1 di transek 2 jenis S.alba 0.16 ind/m2 relatifnya 88.89% dan nilai kerapatan terendah pada jenis R. mucronata dan R.apiculata 0.01 ind/m2 relatifnya 5.56% di transek 2 pada stasiun 1 .Nilai frekuensi jenis tertinggi pada stasiun 1 di transek 1 jenis S.alba yaitu 1.00 relatifnya 100% dan frekuensi terendah pada stasiun 1 transek 2 jenis R, piculate yaitu 0.50 relatifnya 33.33. Nilai penutupan jenis tertinggi pada transek 2 stasun 1 jenis S. alba 10.26 nilai relatifnya 92.63 %. Sedangkan penutupan jenis terendah transek 3 jenisR. piculate 0.49 relatifnya 7.86%. Indeks Nilai Penting tertinggi yaitu pada stasiun 1 di transek 1 yaitu jenis S.alba 300 dan terendah pada stasiun 1 di transek 2 jenis R.mucronata 30.55.Nilai keanekaragaman tertinggi pada transek 2, 0.43. Nilai indeks kemerataan (E) pada stasiun 1 di transek 1 yaitu 0 dan transek 2 0,39. Sedangkan stasiun 2 pada transek 1 0 dan transek 2 0.51. tentang kriteria kerusakan mangrove, pada ke 2 stasiun termasuk pada kategori jarang dengan tutupan kanopinya ≤ 50% . Hasil keseluruhan kesesuaian lahan untuk wisata pantai kategori wisata mangrove Pulau Bunaken masuk pada kategori sangat sesuai.Kata kunci: Mangrove, Ekowisata, Pulau Bunaken

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Community structure of seaweed beds in Mantehage Island, North Sulawesi, Indonesia

AQUATIC SCIENCE & MANAGEMENT ◽

10.35800/jasm.3.2.2015.14043 ◽

2015 ◽

Vol 3 (2) ◽

pp. 32 ◽

Cited By ~ 1

Author(s):

Hartarto Sormin ◽

Grevo S. Gerung ◽

Unstain N.W.J. Rembet

Keyword(s):

Diversity Index ◽

Current Speed ◽

Line Transect ◽

Caulerpa Racemosa ◽

Dominance Index ◽

Food Industries ◽

North Sulawesi ◽

Speed Range ◽

Line Transect Method ◽

Bahasa Indonesia

Title (Bahasa Indonesia): Struktur komunitas rumput laut di Pulau Mantehage, Provinsi Sulawesi Utara Seaweeds are an important marine resource for coastal community. They are used as medicine, paper materials, biofuel and direct consumption as vegetable or in food industries. Data collection in Mantehage island used Seagrass Watch method combined with line transect method with quadrat. This study found 29 species of seaweeds consisting of 13 species of Chlorophyta, 4 species of Phaeophtya and 12 species of Rhodophyta. Water temperatures ranged from 28–30ºC and pH ranged from 8.14–8.69, while salinity ranged between 30.8–31.9 ppt. Mantehage island waters has 100 % visibility with the current speed range of 30–42 cm/sec. INP of Caulerpa racemosa has the highest value at all sites. Diversity index ranged from 0.799–1.093 considered as low and dominance index ranged between 0.635–0.697 categorized as normal. Eveness index ranged from 0.303–0.365 showing that the seaweed community was under pressures. Rumput laut pada saat ini menjadi komoditas penting bagi masyarakat pesisir. Manfaat rumput laut selain dikonsumsi juga dijadikan sebagai obat, bahan baku kertas dan biofuel. Data di pulau Mantehege dikumpulkan menggunakan metode Seagrass watch yang dikombinasikan dengan metode transek garis dan kuadran. Ditemukan 29 spesies rumput laut yang terdiri dari 13 alga hijau Clorophyta, 4 alga cokelat Phaeyophtya dan 12 alga merah Rhodophyta. Substrat pada lokasi penelitian berupa karang mati dan batu karang. Suhu di perairan Pulau Mantehage di lokasi penelitian berkisar 28–30ºC. pH di lokasi penelitian yaitu 8,14–8,69 dengan salinitas berkisar 30,8–31,9 ppt. Kecerahan di Pulau Mantehege yaitu 100% dan kecepatan arus di kisaran 30–42 cm/detik. Nilai INP Caulerpa racemosa mempunyai nilai tertinggi pada semua lokasi. Indeks Keanekaragaman (H’) pada semua lokasi didapat berkisar 0,799–1,093 yang dikategorikan rendah dan biasa. Nilai Indeks Dominasi (D) pada semua lokasi berkisar antara 0,635–0,697 yang dikategorikan sedang. Indeks Keseragaman (J’) berkisar 0,303–0,365 yang menggambarkan komunitas pada kondisi tertekan.

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Percentage of Mangrove Canopy Cover and Mollusks Abundance in Benoa Bay Mangrove Ecosystem

Advances in Tropical Biodiversity and Environmental Sciences ◽

10.24843/atbes.2021.v05.i03.p05 ◽

2021 ◽

Vol 5 (3) ◽

pp. 105

Author(s):

Shintani Asri Tinambunan ◽

Nyoman Dati Pertami ◽

Ni Made Ernawati

Keyword(s):

Canopy Cover ◽

Avicennia Marina ◽

Mangrove Ecosystem ◽

Line Transect ◽

Hemispherical Photography ◽

Bruguiera Gymnorrhiza ◽

Mangrove Species ◽

Rhizophora Stylosa ◽

Rhizophora Apiculata ◽

The Relationship

This research was conducted to determine the condition of the mangrove ecosystem based on its canopy cover and to determine the types of mollusks (Bivalves and Gastropods) associated with the Benoa Bay mangrove ecosystem. Hemispherical photography is a method for observing mangrove canopy cover and line transect method for mollusks. The composition of mangrove species found in the research location were five species, namely Rhizophora stylosa, Rhizophora mucronata, Rhizophora apiculata, Bruguiera gymnorrhiza, and Avicennia marina. The percentage of mangrove canopy cover in the Benoa Bay mangrove ecosystem is in a good category (average = 76.59%). There are eight types of mollusks found in the research location. There are two types of bivalves (Polymesoda bengalensis and Gafrarium pectinatum) and six types of gastropods (Nerita balteata, Nerita picea, Neritina turrita, Pila ampullacea, Cassidula aurisfelis, and Littoraria melanostoma). The relationship between the percentage of mangrove canopy cover and abundance of mollusks in the Benoa Bay mangrove ecosystem is very strong (r) of 0.920. The higher the percentage value of mangrove canopy cover, the higher the mollusks abundance.

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COMMUNITY STRUCTURE AND SPATIAL DISTRIBUTION OF FISH JUVENILE IN MANGROVE AND SEAGRASS HABITATS IN PRAMUKA ISLAND

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.28930/jitkt.v8i1.12715 ◽

2016 ◽

Vol 8 (1) ◽

Author(s):

Fathul Amin ◽

M Mukhlis Kamal ◽

Am Azbas Taurusman

Keyword(s):

Spatial Distribution ◽

Community Structure ◽

Fish Species ◽

Species Abundance ◽

Fish Distribution ◽

Line Transect ◽

Observation Area ◽

Significant Difference ◽

Line Transect Method ◽

Distribution Of Fish

This study was aimed to investigate the community structure of fish juvenile, spatial distribution and similarity from both adjacent habitats of mangrove and seagrass. This study was conducted in the eastern part of Pramuka island from April to June 2015. The samples were collected by using line transect method in three observation areas that were spatially connected i.e., mangrove, transition and seagrass zones. The result of the study from three observation zones revealed that there were found 24 species of fishes from 15 families i.e., Siganidae (4 species), Apogonidae (3 species), Ger-reidae (2 species), Terapontidae (2 species), Gobiidae (2 species), Labridae (2 species), Mugilidae, Nemipteridae, Hemiramphidae, Sphyraenidae, Monacanthidae, Atherinidae, Pomacentridae, Lut-janidae, and Lethrinidae (each of them 1 species). According to community structure, the adjacent ob-servation zones did not show a significant difference in the number of species, abundance, and bio-mass. According to fish distribution, fish species in transition zone and seagrass zone were relatively similar and dominated by Gerres oblongus, Fibramia lateralis, and Siganus canaliculatus. Mean-while, in mangrove zone revealed a significant different of fish species than in transition and seagrass zones. In mangrove zone, fish species was dominated by Gerres oblongus and Siganus guttatus. Keywords: spatial distribution, juvenile, mangrove, seagrass, pramuka Island, Siganidae

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KEANEKARAGAMAN JENIS VEGETASI PAKAN BADAK FASE SEMAI DI ZONA KHUSUS KONSERVASI TAMAN NASIONAL WAY KAMBAS

Jurnal Hutan Tropis ◽

10.20527/jht.v9i1.10488 ◽

2021 ◽

Vol 9 (1) ◽

pp. 140

Author(s):

Riyan Maulana ◽

Indriyanto ◽

Afif Bintoro

Keyword(s):

Seedling Growth ◽

National Park ◽

Line Transect ◽

Tree Seedling ◽

First Line ◽

Young Tree ◽

Line Transect Method ◽

Way Kambas National Park ◽

Conservation Zones ◽

Important Value Index

The Sumatran rhinos (Dicerorhinus sumatrensis) is the smallest of the five species of rhinoceros that still alive. Way Kambas National Park (TNWK) is captivity semi-insitu of Dicerorhinus sumatrensis. The Sumatran rhinos are herbivorous with a preference of young tree (seedling), leaves, fruits, and shoots.The importance of knowledge about study of feed sumatran rhinos for conservationof rhino in TNWK. The purpose of the study is to identifies rhino feed on seedling growth level in the conservation zones TNWK. The research used line transect method. The first line and plot determined randomly then the next line and plots was sistematically. The observation plots had measurement with amount 2m x 2m of seedling growth level in big plot with amount 20m x 20m with spacing between plot in line 500 m with total 98 plots. The results of this study concluded that there were 28 types of seedling rhino feed which was found to be the most abundant and evenly distributed based on the important value index, are Ixora sp. is 16.73 and then Antidesma neurocarpum Miq is 14.4 and Dillenia excelsa is 10.89. Biodiversity index is 3.57 and evennes index is 0.84.

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Assessment of mangrove condition of Mare Island, North Maluku, Indonesia

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/890/1/012056 ◽

2021 ◽

Vol 890 (1) ◽

pp. 012056

Author(s):

I Tahir ◽

R C Kepel ◽

R Jamaluddin

Keyword(s):

Canopy Cover ◽

Marine Conservation ◽

Species Density ◽

Line Transect ◽

Observation Site ◽

Conservation Area ◽

Line Transect Method

Abstract This work aimed to determine the condition of mangroves according to the species density and mangrove canopy cover in marine conservation area of Mare Gam Village, Mare Island. The data were collected using the nested quadrat line transect method. The level of species density was calculated based on the criteria for mangrove growth, namely seedlings, saplings and trees. The results showed that there were 9 types of mangroves, based on the value of species density and canopy cover, the condition of mangroves at the observation site was in the good and dense category.

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The inventory of macroalgae in the Mantehage Island waters, Wori sub-district, North Minahasa district in North Sulawesi Province

JURNAL ILMIAH PLATAX ◽

10.35800/jip.4.2.2016.14077 ◽

2016 ◽

Vol 4 (2) ◽

pp. 84

Author(s):

Preisy Meicy Meriam Watung ◽

Rene Charles Kepel ◽

Lawrence J. L Lumingas

Keyword(s):

Data Collection ◽

Green Algae ◽

Red Algae ◽

Brown Algae ◽

Line Transect ◽

Transect Line ◽

North Sulawesi ◽

Morphological Studies ◽

Line Transect Method

This study was carried out in Mantehage Island waters, covering Bango, Tinongko, Buhias, and Tangkasi, with an objective of knowing the taxa composition of macroalgae through morphological studies. Data collection used Line Transect method with quadrat. Three 100 m-transect line were placed perpendicular to the coastline. Distance between transects was 50 m, and the quadrat used was 1 x 1 m². Results found 44 species of microalgae, consisting of 3 divisions, 3 classes, 10 orders, 18 families, and 26 genera. Green algae comprised 3 orders, 6 families, 11 genera, and 23 species. Brown algae consisted of 3 orders, 3 families, 5 genera, and 5 species. Red algae had 4 orders, 8 families, 10 genera and 16 species. Keyword : Macroalga, species, Mantehage Island. Abstrak Penelitian ini dilakukan di pulau Mantehage, yakni Desa Bango, Tinongko, Buhias, dan Desa Tangkasi, dengan tujuan untuk mengetahui komposisi taksa makroalga melalui pendekatan morfologi. Pengambilan data dilakukan dengan menggunakan metode Line Transect kuadrat. Tiga garis transek sepanjang 100 m diletakkan tegak lurus garis pantai dengan jarak antar transek 50 m dan jarak antar kuadrat 10 m. Ukuran kuadrat yang dipakai adalah 1 x 1 m². Hasil penelitian menemukan 44 spesies, yang terdiri dari 3 divisi, 3 kelas, 10 ordo, 18 famili dan 26 genera. Alga hijau terdiri atas 3 ordo, 6 famili, 11 genera dan 23 spesies. Alga cokelat terdiri atas 3 ordo, 3 famili, 5 genera dan 5 spesies. Adapun alga merah terdiri atas 4 ordo, 8 famili, 10 genera dan 16 spesies. Kata Kunci : makroalga, species, Pulau Mantehage 2Staf pengajar Fakultas Perikanan dan Ilmu Kelautan Universitas Sam Ratulangi

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COMMUNITY STRUCTURE AND SPATIAL DISTRIBUTION OF FISH JUVENILE IN MANGROVE AND SEAGRASS HABITATS IN PRAMUKA ISLAND

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.29244/jitkt.v8i1.12715 ◽

2016 ◽

Vol 8 (1) ◽

pp. 187-199 ◽

Cited By ~ 1

Author(s):

Fathul Amin ◽

M Mukhlis Kamal ◽

Am Azbas Taurusman

Keyword(s):

Spatial Distribution ◽

Community Structure ◽

Fish Species ◽

Species Abundance ◽

Fish Distribution ◽

Line Transect ◽

Siganus Canaliculatus ◽

Significant Difference ◽

Line Transect Method ◽

Distribution Of Fish

This study was aimed to investigate the community structure of fish juvenile, spatial distribution and similarity from both adjacent habitats of mangrove and seagrass. This study was conducted in the eastern part of Pramuka island from April to June 2015. The samples were collected by using line transect method in three observation areas that were spatially connected i.e., mangrove, transition and seagrass zones. The result of the study from three observation zones revealed that there were found 24 species of fishes from 15 families i.e., Siganidae (4 species), Apogonidae (3 species), Ger-reidae (2 species), Terapontidae (2 species), Gobiidae (2 species), Labridae (2 species), Mugilidae, Nemipteridae, Hemiramphidae, Sphyraenidae, Monacanthidae, Atherinidae, Pomacentridae, Lut-janidae, and Lethrinidae (each of them 1 species). According to community structure, the adjacent ob-servation zones did not show a significant difference in the number of species, abundance, and bio-mass. According to fish distribution, fish species in transition zone and seagrass zone were relatively similar and dominated by Gerres oblongus, Fibramia lateralis, and Siganus canaliculatus. Mean-while, in mangrove zone revealed a significant different of fish species than in transition and seagrass zones. In mangrove zone, fish species was dominated by Gerres oblongus and Siganus guttatus. Keywords: spatial distribution, juvenile, mangrove, seagrass, pramuka Island, Siganidae

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STRUKTUR KOMUNITAS MANGROVE DI DESA LESAH, KECAMATAN TAGULANDANG, KABUPATEN SITARO

JURNAL PESISIR DAN LAUT TROPIS ◽

10.35800/jplt.8.2.2020.28769 ◽

2020 ◽

Vol 8 (2) ◽

pp. 48

Author(s):

Indra Asman ◽

Calvyn F A Sondak ◽

Joshian N W Schaduw ◽

Deislie R H Kumampung ◽

Medy Ompi ◽

...

Keyword(s):

Relative Frequency ◽

Diversity Index ◽

Line Transect ◽

Microsoft Excel ◽

Rhizophora Stylosa ◽

Ecological Index ◽

Sonneratia Alba ◽

Line Transect Method ◽

Index Value ◽

Important Value Index

Mangroves are forests that grow in brackish water and are affected by tides and seawater, and these forests grow specifically in places where there are pavement and accumulation of organic material. The purpose of this research is to identify the types of mangroves and determine the structure of the mangrove community in Lesah Village. This research was conducted from September to October 2019. The method used in this research is the quadrant line transect method. The types of mangroves were identified with identification books. Community structure data taken are density, frequency, dominance and important value index (IVI) and then analyzed with Microsoft Excel program. Based on the results of the research, there are 2 types of mangroves found in the research location, Rhizophora stylosa and Sonneratia alba. The highest density value (0.122 ind / m2), relative density (81.88%), frequency types (1), relative frequency (50%). Closure types (1.83 m2), types of relative closure (50.18%), the highest important value index at the research site was (182.12%). The results of the mangrove ecological index data analysis for the diversity index value (0.51), dominance (0.73). Keywords: Structure Community, Mangrove, Lesah Village. Abstrak Mangrove adalah hutan yang tumbuh di air payau, dan dipengaruhi oleh pasang surut air laut dan hutan ini tumbuh khususnya di tempat-tempat di mana terjadi pelumpuaran dan akumulasi bahan oraganik. Tujuan dari penelitian adalah mengidentifikasi jenis-jenis mangrove dan mengetahui struktur komunitas mangrove di Desa Lesah. Penelitian dilaksanakan dari September-Oktober 2019. Metode yang digunakan adalah metode line transek kuadran. Jenis-jenis mangrove di identifikasi dengan bantuan buku identifikasi. Data struktur komunitas yang di ambil adalah kerepatan, ferkuensi, dominasi dan indeks nilai penting(INP) dan kemudian di analisa dengan bantuan program computer Microsoft Excel. Berdasarkan hasil penelitian terdapat 2 jenis mangrove yang terdiri dari, Rhizophora stylosa dan Sonneratia alba. Nilai kerepatan tertinggi (0.122 ind/m2), kerapatan relatif jenis (81.88%), frekuensi jenis (1), frekuensi relatif jenis (50%). Penutupan jenis (1.83 m2), penutupan relatif jenis (50.18%), indeks nilai penting tertinggi dilokasi penelitian adalah (182.12%). Hasil analisis data indeks ekologi mangrove untuk nilai indeks keanekaragaman (0.51), dominasi(0.73). Kata Kunci: Struktur Komunitas, Mangrove, Desa Lesah.

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