scholarly journals KEANEKARAGAMAN KEPITING BIOLA PADA KAWASAN HUTAN MANGROVE DESA KARIMUNTING KECAMATAN SUNGAI RAYA KEPULAUAN KABUPATEN BENGKAYANG

2020 ◽  
Vol 8 (2) ◽  
Author(s):  
Hanafi Hanafi ◽  
M Sofwan Anwari ◽  
Ahmad Yani
Keyword(s):  
Fiddler Crab ◽  
Diversity Index ◽  
Species Abundance ◽  
Similarity Index ◽  
Sampling Technique ◽  
Fiddler Crabs ◽  
Species Diversity Index ◽  
Transect Line ◽  
Species Similarity ◽  
Index Value

Karimunting Village is a coastal area that has a mangrove with contained several faunas in it, one of which is a fiddler crab. The fiddler crab is a Decapoda ordo and it is included in the Ocypodidae family. This study aims to collect data on the diversity of fiddler crabs in Karimunting Village. The method used in this study is a survey, while the sample is collected by applying the transect line with a purposive sampling technique. The transect line is 500 m length, with a total of three lanes. There are ten plots of 1x1 meter in size in each transect lines to pick up fiddler crabs. Fiddler crabs species were found in 6 species, namely Uca paradussumieri, Uca annulipes, Uca forcipata, Uca rosea, Uca crassipes and Uca tetragonon. The Shannon-Winner species diversity index (H') of fiddler crabs in 1st and 2nd lanes both are categorized medium, while in the 3rd lane is categorized low. The range of values H'=0,3-1,5. The value of species abundance index (Xi) ranges from 3-16.6 ind/m2. The value of evenness index (e) ranges from 0,72 to 0,84. The dominance index value (C) ranges from 0,3 to 0,5 categorized as the absence of the dominant species of fiddler crab. Comparison of species similarity index (IS) for each lane is categorized differently, for the 1st and 2nd lane the index is 91% and categorized as having high species similarity, then in 2nd and 3rd lane the index is 75% and categorized as having a medium species similarity, whereas the index for 1st and 3rd is 60%, therefore it is categorized as having low species similarity.Keyword: Diversity, Fiddler Crab, Karimunting Village

scholarly journals KEANEKARAGAMAN JENIS KUPU-KUPU DI KAWASAN KESATUAN PENGELOLAAN HUTAN (KPH) DESA TIGA BERKAT KECAMATAN LUMAR KABUPATEN BENGKAYANG

2019 ◽  
Vol 7 (3) ◽  
Author(s):  
Dora Dora ◽  
Yuliati Indrayani ◽  
Iswan Dewantara
Keyword(s):  
Forest Management ◽  
Diversity Index ◽  
Similarity Index ◽  
Butterfly Species ◽  
Clean Water ◽  
Species Diversity Index ◽  
Conservation Area ◽  
Transect Line ◽  
Species Similarity ◽  
Index Value

Diversity of butterfly species can develop well if in the habitat there are factors that support its population. Protected areas have a higher diversity of butterfly species than those land use conservation area. Beside taking forest product in term of wood or non woody materials, Forest Managemen Unit also provide environmental service such as Clean Water Shelter (PDAM) and Madi Dam. The location of the Madi Dam and Clean Water Shelter are the location that utilized by the communities, this area also have a high diversity of butterfly. The purpose of this study was to obtain data on the diversity of butterflies in the Forest Management Unit in the village of Tiga Berkat lumar sub-district Bengkayang regency. The method used in this research is the transect method. Direct sampling with insect nets is carried out on the transect line. The butterfly found were 28 species with 153 individuals from 4 families are Papilionidae (6 species), Nymphalidae (14 species), Pieridae (6 species) and Lycaenidae (2 species). Diversity index value is 2,98, abundance index value is 0,89, riches index value is 5,36, dominance index  value is 2,14, species similarity index value is 72,72 %.Keywords : Diversity, Butterfly, Forest Management Units

scholarly journals KEANEKARAGAMAN JENIS BURUNG RANGKONG (Bucerotidae) DI STASIUN PENELITIAN WAY CANGUK TAMAN NASIONAL BUKIT BARISAN SELATAN

2021 ◽  
Vol 4 (2) ◽  
pp. 153
Author(s):  
Muhammad Sarpin Pratama ◽  
Agus Setiawan ◽  
Sugeng Prayitno Harianto ◽  
Nuning Nurcahyani
Keyword(s):  
National Park ◽  
Diversity Index ◽  
Descriptive Analysis ◽  
Index Formula ◽  
Research Station ◽  
Species Diversity Index ◽  
Transect Line ◽  
Line Transects ◽  
Index Value ◽  
Almost All

The rise of hornbill hunting and deforestation that occurred in Indonesia, especially the island of Sumatra lately, threatening the preservation of these birds in nature. The purpose of this study was to determine thediversity of hornbill species in the Way Canguk Research Station, Bukit Barisan Selatan National Park. The method used in this study is a transect line with a total of 18 line transects. The data obtained was processed using the Shanon wienners diversity index formula, then translated with descriptive analysis. A total of 5 types of hornbills found in these locations are rhinoceros hornbills (Buceros rhinoceros), helmeted hornbills (Rhinoplax vigil), wreathed hornbill (Rhyticeros undulatus), bushy crested hornbill (Anorrhinus galeritus) and white crowned hornbill (Berenicornis comatus), with a species diversity index value of 1.00 included in the low category and the evenness of the species is a stable with an evenness index value of 0.62. The highest abundance of hornbills is (Anorrhinus galeritus) a beside that hornbills can be found in almost all transect lines.

scholarly journals The structure, composition, and threatened plants in The Kinarum Protected Forest, South Kalimantan, Indonesia

2020 ◽  
Vol 21 (6) ◽  
Author(s):  
Dodo Dodo ◽  
Syamsul Hidayat
Keyword(s):  
Diversity Index ◽  
Species Abundance ◽  
Research Area ◽  
Iucn Red List ◽  
Species Diversity Index ◽  
Threatened Plants ◽  
Abundance Index ◽  
Forest Condition ◽  
Protected Plants ◽  
Index Value

Abstract. Dodo, Hidayat S. 2020. The structure, composition, and threatened plants in The Kinarum Protected Forest, South Kalimantan, Indonesia. Biodiversitas 21: 2603-2618. Kinarum Protected Forest (Kinarum PF) is one of the remaining tropical forest areas in Tabalong District, South Kalimantan, Indonesia. It is feared that deforestation will occur in this forest due to various human activities. The research was conducted to determine the structure and composition of vegetation in Kinarum PF which several decades ago was once a forest concession area. This research also explored the existence of threatened, endemic, and protected plants. Research has been carried out using the track plot method. The total research area is 0.6 ha consisting of three transect lines with five plots measuring 20 x 20 m2 each transect. Data were analyzed with important value index (IVI), dominance index, species diversity index, and species abundance index. The results recorded 460 specimens belonging to 121 species, 86 genera, and 43 families. Most species are from the family Lauraceae followed by Moraceae and Rubiaceae. The results also recorded 42 species included in the IUCN red list plants, eight of which are classified as threatened plants, namely Aglaia angustifolia, Artocarpus tamaran, Dracontomelon costatum, Durio dulcis, Durio kutejensis, Eusideroxylon zwageri, Myristica magnifica, and Shorea guiso. These plants have an average IVI value less than 10% and the species abundance index is close to zero. In general, the forest condition is classified as moderate with a diversity index value at each growth stage in the range of values ​​1-3. However, IVI of each species, especially those belonging to the threatened, endemic, and protected plants are on average low.

scholarly journals Keanekaragaman Kupu-Kupu di Bendungan Ulung Peliang Kecamatan Tamako Kepulauan Sangihe, Sulawesi Utara

2020 ◽  
Vol 10 (2) ◽  
pp. 63
Author(s):  
Sabatini Hengkengbala ◽  
Roni Koneri ◽  
Deidy Katili
Keyword(s):  
Diversity Index ◽  
Species Abundance ◽  
Sampling Technique ◽  
Wealth Index ◽  
Butterfly Species ◽  
Diversity Analysis ◽  
Edge Habitat ◽  
Number Of Species ◽  
Transect Line ◽  
North Sulawesi

ABSTRAKKupu-kupu merupakan serangga yang termasuk dalam ordo Lepidoptera. Serangga tersebut memiliki peranan yang penting dalam suatu ekosistem yaitu mempertahankan keseimbangan ekosistem dan memperkaya keanekaragaman hayati di alam. Penelitian ini bertujuan untuk menganalisis keanekaragaman kupu-kupu di kawasan Bendungan Ulung Peliang, Kecamatan Tamako, Kabupaten Kepulauan Sangihe, Sulawesi Utara. Teknik pengambilan sampel menggunakan metoda transek. Pengambilan sampel dilakukan pada tiga tipe habitat yaitu habitat pinggir bendungan, hutan dan kebun. Pada masing-masing habitat dibuat transek dengan panjang 300m. Pengambilan sampel kupu-kupu dilakukan sepanjang garis transek menggunakan sweepnet. Komposisi kupu-kupu yang diperoleh terdiri dari 5 famili, 30 spesies dan 463 individu. Famili yang paling banyak ditemukan jumlah spesies dan individunya adalah Nymphalidae. Spesies yang memiliki kelimpahan tertinggi adalah Junonia hedonia intermedia dan Eurema tominia. Analisis keanekaragaman didapatkan bahwa indek kekayaan, indek keanekaragaman dan indek kemerataan spesies kupu-kupu tertinggi ditemukan pada habitat kebun, sedangkan kelimpahan spesies tertinggi terdapat pada habitat pinggir bendungan.Kata kunci: Keanekaragaman; kupu-kupu; Bendungan Ulung Peliang; Kepulauan SangiheABSTRACTButterflies are insects that are included in the order Lepidoptera. Theses insects have an important role in ecosystem that is to maintain the balance of the ecosystem and enrich the biodiversity in nature. This study aims to analyze the diversity of butterflies in the area of Ulung Peliang Dam, Tamako District, Sangihe Islands Regency, North Sulawesi. The sampling technique used the transect method. Sampling has been carried out in three types of habitats namely dam, forest and garden habitat. Each transect has been made with a length of 300m. Butterfly sampling was carried out along the transect line using. The composition of butterflies that habve been obtained consisted of 5 families, 30 species and 463 individuals. The most abundant family with a number of species and individuals is Nymphalidae. Species that have the highest abundance are Junonia hedonia intermedia and Eurema tominia. Diversity analysis found that the highest wealth index, diversity index and evenness species of butterfly species were found in the garden habitat, while the highest species abundance was in the dam edge habitat. Keywords: Diversity; butterfly; Ulung Peliang Dam; Sangihe Islands.

scholarly journals Diversity and abundance of insects at industrial plantation forest and natural forest ecosystems in Siak, Riau Province

2020 ◽  
Vol 1 (1) ◽  
pp. 28-32
Author(s):  
Asril Asril ◽  
Yossa Istiadi ◽  
Budi Tjahyono
Keyword(s):  
Forest Ecosystem ◽  
Diversity Index ◽  
Similarity Index ◽  
Sampling Technique ◽  
Natural Forest ◽  
Line Transect ◽  
Fluorescent Light ◽  
Plantation Forest ◽  
Species Diversity Index ◽  
Industrial Plantation

The objective of research is to find out the differences and similarities of insect diversity, abundance and composition between in industrial plantation forest (HTI) and natural forest (Arboretum) ecosystems. Field research was carried out in the Rasau Kuning area, Perawang  Barat Regency,  Riau Province, while specimens identification conducted at LIPI Biology Research Center Laboratory in February - March 2019. Line transect sampling technique and fluorescent light traps were used as methods for collecting insects from both two different ecosystems with three replications. The results found five order of insects i.e. Lepidoptera, Hemiptera, Coleoptera, Orthoptera, and Hymenoptera which consisting of  35 species in plantation forest ecosystem, and 26 species in natural forest ecosystem where both ecosystems dominated by Lepidoptera. Statistical analysis of research results show that two average insects species diversity index within both plantation forest (HTI) and natural forest (Arboretum) ecosystems is not different (t = 1,419; p0,05). The similarity index found very similar (23,56%) between both ecosystems. Predatory insects which was found in this study is Sycanus sp. (Hemiptera: Reduviidae) from the order of Lepidoptera.Penelitian ini bertujuan  untuk mengungkapkan perbedaan dan kesamaan keanekaragaman  jenis, kelimpahan, dan komposisi jenis serangga antara di ekosistem hutan tanaman industry (HTI) dengan ekosistem hutan alam (Arboretum). Penelitian lapang dilakukan di areal Rasau Kuning,  Kabupaten  Perawang  Barat, Provinsi Riau, sementara identifikasi specimen dilakukan di Laboratorium Pusat Penelitian Biologi LIPI, pada  bulan Pebruari  -  Maret  2019. Metode sampling  line transect  dan perangkap  cahaya  berflouresen digunakan untuk menangkap serangga di kedua ekosistem tersebut melalui 3 kali ulangan. Hasil studi menemukan 5 ordo serangga yaitu  Lepidoptera, Hemiptera, Coleoptera, Orthoptera, and Hymenoptera, dengan masing-masing  25 spesies terdapat di ekosistem hutan tanaman (HTI) dan 26 spesies di ekostem alam (Arboretum), yang mana keduanya didominasi ordo Lepidoptera. Melalui analisis statistik, hasil penelitian menunjukkan bahwa pada kedua ekosistem tidak terlihat adanya perbedaan indeks keanekaragaman jenis (t =1,419; p0,05). Begitu juga dengan indeks kesamaan menunjukan tingkat yang sangat sama (23,56%) antara kedua ekosistem tersebut. Pada kajian ini juga ditemukan spesies serangga predator yaitu Sycanus sp. ((Hemiptera; Reduviidae) dari ordo Lepidoptera.

scholarly journals KEANEKARAGAMAN VEGETASI RIPARIAN DI SUNGAI TEWALEN, MINAHASA SELATAN-SULAWESI UTARA

2016 ◽  
Vol 16 (1) ◽  
pp. 7
Author(s):  
Arman Hi Bando ◽  
Ratna Siahaan ◽  
Marnix D Langoy
Keyword(s):  
Species Richness ◽  
Riparian Vegetation ◽  
Diversity Index ◽  
Similarity Index ◽  
Species Diversity Index ◽  
Vegetation Diversity ◽  
Location Data ◽  
North Sulawesi ◽  
Species Similarity ◽  
Species Richness And Abundance

KEANEKARAGAMAN VEGETASI RIPARIAN DI SUNGAI TEWALEN, MINAHASA SELATAN - SULAWESI UTARAABSTRAK Vegatasi riparian merupakan sumberdaya alam yang mudah terganggu akibat aktivitas manusia misalnya konversi riaria menjadi lahan permukiman, pertanian dan industri. Vegetasi riparian dapat berfungsi mempertahankan kualitas air. Penelitian ini bertujuan untuk menganalisis keanekaragaman vegetasi riparian di Sungai Tewalen, Minahasa Selatan - Sulawesi Utara. Metode purposive digunakan untuk menentukan lokasi dan pengelompokan berdasarkan kriteria pertumbuhan untuk memperoleh data kekayaan jenis dan kelimpahan. Sebanyak 3 stasiun penelitian ditentukan yaitu hulu, tengah dan hilir. Tiga ulangan dilakukan di tiap stasiun. Data dianalisis secara deskriptif berdasarkan Indeks keanekaragaman jenis Shannon - Wienner (H’), Indeks Kemerataan dan Indeks Kesamaan Jenis Sorensen. Kekayaan jenis egetasi riparian sebanyak lima puluh enam (56) jenis yeng termasuk dalam tiga puluh (30) suku. Tiga (3) suku terbesar yaitu Poaceae (22%), Cyatheaceae (13%) dan Araceae (11%). Keanekaragaman vegetasi riparian pada tingkat rumput hingga pohon di lokasi penelitian termasuk sedang (H’ 1≤ H ≤ 3). Vegetasi riparian di Sungai Tewalen secara umum memiliki tingkat kemerataan yang tinggi yaitu mendekati 1 yang menunjukkan jumlah individu masing-masing jenis sama atau tidak jauh berbeda. Kesamaan jenis antar stasiun penelitian rendah yang menunjukkan adanya perbedaaan komunitas vegetasi riparian antar stasiun. Kata kunci: Vegetasi riparian, Sungai Tewalen, Minahasa Selatan, Sulawesi Utara   RIPARIAN VEGETATION DIVERSITY OF TEWALEN RIVER,SOUTH MINAHASA REGENCY- NORTH SULAWESI ABSTRACT Riparian vegetation is natural resource easily disturbed by human activities such as conversion of riparia to be settlement, agriculture and industry areas. Riparian vegetation serves to maintain water quality. This study aimed to analyze the diversity of riparian vegetation of Tewalen River, South Minahasa - North Sulawesi. Purposive sampling method was used to determine the locations and grouping based on growth criteria to obtain data on species richness and abundance. Three (3) research locations were determined that were up, mid and downstream parts. Three replications were applied at each location. Data were analyzed descriptively based on species diversity index Shannon - Wienner (H '), Evenness Index and Sorensen Similarity Index. Species richness of riparian vegetation were fifty-six (56) species were grouped into thirty (30) families. The biggest families were Poaceae (22%), Cyatheaceae (13%) and Araceae (11%). Riparian vegetation diversity from grass to trees were moderate (H '1≤ H ≤ 3). Generally, riparian vegetation of Tewalen River had high evenness (close to 1) that showed the number of individuals of each species were same or not different. The low index of species similarity between stations showed the differences riparian vegetation communities between stations. Keywords: Riparian vegetation, Tewalen River, South Minahasa, North Sulawesi.

scholarly journals Coral Fishes the Famili Chaetodontidae in Coral Reef Waters of Para Island Sub District Tatoareng, Sangihe Kepulauan Regency

2014 ◽  
Vol 1 (4) ◽  
pp. 210
Author(s):  
Ari B. Rondonuwu ◽  
Unstain N.W.J. Rembet ◽  
Ruddy Dj. Moningkey ◽  
John L. Tombokan ◽  
Alex D. Kambey ◽  
...  
Keyword(s):  
Coral Reef ◽  
Diversity Index ◽  
Similarity Index ◽  
Species Diversity Index ◽  
Dominance Index ◽  
Visual Census ◽  
Number Of Species ◽  
Transect Line ◽  
Number Of Individuals ◽  
Fish Species Diversity

This study aims to determine the distribution and abundance of reef fish families chaetodontidae in coral reef waters of Para Island Sub District Tatoareng. This study was conducted at 4 stations. Data collected was done using visual census on the 50-meter transect line at 5 meters depth. In addition to revealing the number of species and abundance of individuals chaetodontidae, data analysis aimed to determine number of species, individual abundance, and the community index. Based on the identification, obtained 27 species from 3 genera and 217 number of individuals.  The highest number of species found at station Para 1.  7 species are always found in all observation stations, Chaetodon kleinii, C. punctatofasciatus, C. lunulatus, C. trifascialis, C. vagabundus, Heniochus varius, H. chrysostomus. The species with the largest number of individuals that is Chaetodon kleinii (45 individuals). Chaetodontidae fish species diversity index ranged between 2.207-2.866. Dominance Index are categorized low in the range of 0.078-0.122.  Similarity index are categorized high in the range of 0.922-0.971. Keywords : coral fishes, chaetodontidae, coral reef, Para Island

Carabidae of Barnaul city parks: ecological characteristics and species composition

2018 ◽  
Vol 8 (2) ◽  
pp. 348-353
Author(s):  
E. A. Kuchina ◽  
N. D. Ovcharenko ◽  
L. D. Vasileva
Keyword(s):  
Species Composition ◽  
Diversity Index ◽  
Similarity Index ◽  
Life Forms ◽  
Ground Beetles ◽  
Forest Steppe ◽  
Ecological Groups ◽  
Dominant Group ◽  
Species Diversity Index ◽  
Steppe Species

<p>Anthropogenic impact on the population of ground beetles leads to a change in their numbers, structure of dominance, density, species composition, spectrum of life forms. This makes the beetles Carabidae a convenient and informative bioindicator of the ecological state of biocenoses. The material for this work was the Carabidae collections conducted in June-August 2016-2017 in the park zone of different regions of Barnaul, differing in location, area, hydrological regime, vegetation cover, purpose and anthropogenic load. When processing the material, the quantitative, species and generic composition of the carabidae was determined, calculations were made for such indicators as the Berger-Parker dominance index, the Shannon species diversity index (Hs), and the Jacquard species similarity index. The fauna (Coleoptera, Carabidae) of the park zone of Barnaul is represented by 55 species belonging to 20 genera. The dominant group is represented by species belonging to steppe, forest and polyzonal groups. Forest-steppe species of ground beetles as dominants have not been identified in any of the investigated territories. The greatest variety of ecological groups was noted on the territory of the Yubileyny рark, which is explained by the presence of zones with various microclimatic conditions, the presence of a birch grove that flows through the park with the Pivovarka River, and a wide log in the park. Registered species belong to eight groups of life forms belonging to two classes - zoophagous and myxophytophagous. On the numerical and species abundance, zoophages predominate. The spectrum of life forms corresponds to the zonal spectrum characteristic of the forest-steppe zone.</p><p> </p>

scholarly journals Sea cucumber community in the coastal area of the Bahoi Village,West Likupang Sub-district, North Minahasa District

2020 ◽  
Vol 8 (1) ◽  
pp. 37
Author(s):  
Andia Tri Fritama Lumbu ◽  
Lawrence J. L. Lumingas ◽  
Gaspar D. Manu
Keyword(s):  
Sea Cucumber ◽  
Diversity Index ◽  
Similarity Index ◽  
Sampling Technique ◽  
Distribution Patterns ◽  
Line Transect ◽  
Dominance Index ◽  
Holothuria Scabra ◽  
Research Site ◽  
Holothuria Atra

This research is conducted in the coastal waters of Bahoi Village, West Likupang Sub-district, North Minahasa District with the aims to know the types of sea-related environmental factors in the research site and know the community structure of the sea cucumber including the density, Index of diversity, dominance index, and distribution patterns. Data collection was done by using the line transect method, and sampling technique by using quadrat. The results of the study found 5 species of sea cucumber i.e. Holothuria atra,  Holothuria scabra,  Bohadschia marmorata, Actinopyga echinites, and  Bohadschia vitiensis. The individual density of all species is 0.12 ind/m2, and the diversity index (H ') 0.950. The value of the similarity index/compatibility obtained is e = 0.918. The result of the calculated dominance index of sea cucumber species is 1.0 and the pattern of spreading species of sea cucumber in the research site shows a random spread pattern because the value of dispersion index  (I) approaches 1 (one). Keywords: community; Sea cucumber; Bahoi; Dominance; Diversity.AbstrakPenelitian ini dilakukan di perairan pantai desa Bahoi, Kecamatan Likupang Barat, Kabupaten Minahasa Utara dengan tujuan untuk mengetahui jenis-jenis teripang yang ada di lokasi penelitian dan mengetahui struktur komunitas teripang yang meliputi kepadatan, indeks keanekaragaman, indeks dominasi, dan pola penyebaran. Pengambilan data dilakukan dengan metode line transek, dan teknik pengambilan sampel dengan mengunakan kuadrat. Hasil penelitian ditemukan 5 spesies teripang yaitu Holothuria atra, Holothuria scabra, Bohadschia marmorata, Actinopyga echinites dan Bohadschia vitiensis. Kepadatan individu dari seluruh spesies yaitu 0,12 ind/m2, indeks keanekaragaman (H’) 0,950. Nilai indeks kemerataan/keserasian diperoleh nilai indeks e = 0,918. nilai indeks dominasi spesies teripang diperoleh 1,0 dan pola penyebaran spesies teripang dilokasi penelitian menunjukkan pola sebaran acak (random) dikarenakan nilai indeks dispersi (I) mendekati 1 (satu).Kata Kunci : Komunitas; Teripang; Perairan Bahoi; Dominasi; Keanekaragaman

scholarly journals KEANEKARAGAMAN JENIS TUMBUHAN PAKU-PAKUAN (PTERIDOPHYTA) DAN KONDISI TEMPAT TUMBUHNYA PADA HUTAN RAWA GAMBUT SEKUNDER DAN LAHAN GAMBUT TERBUKA

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Furwoko Kirno ◽  
Dwi Astiani ◽  
Hanna Artuti Ekamawanti
Keyword(s):  
Species Diversity ◽  
Diversity Index ◽  
Similarity Index ◽  
Survey Method ◽  
Site Conditions ◽  
Swamp Forest ◽  
Peat Swamp Forest ◽  
Plot Size ◽  
Peat Swamp ◽  
Index Value

The activities of the community around the peat swamp forest cause disruption of the ecosystem from the sustainability of the forest area's resources. Land clearing and peatland fires also affect the presence of ferns. The new environmental conditions due to changes in land cover cause ferns to be affected by these changes. Kuala Dua Village Kubu Raya Regency has secondary peat swamp forest and open peat land due to fires 3-4 years earlier so it is overgrown with a variety of new types of flora, one of which is a type of fern. The objective of the study is to describe species diversity of ferns and their site conditions in secondary peat swamp forests and open peatlands of Kuala Dua Village, Kubu Raya District. This research was conducted with survey method using multiple plot samples. The plots determination was done by purposive sampling which was taken place on the site where there were many species of ferns land. Three plots were on each land covered condition with a plot size of 5 m x 5 m that divided into 25 of a 1 m x 1 m sub plots. The results show that 5 species of ferns found in peat swamp forest and 4 species of ferns were found on open peatlands. The species that has the highest INP value in the forest was Asplenium belangeri and the species that has the INP value in open peatland was Nephrolefis falcata. Dominant Index, Spesies Diversity Index and Spesies Abudance Index were 0,12 and 0,18; 0,30 and 0,36; 0,51 and 0,52 on the forest and open peatland respectively. The Similarity Index value (IS) of ferns in secondary peat swamp forest and open peatland is 44%. The study shows dissimility of species fern in peat swamp forests and open peatlands.Keywords: Open peatland, Pteridophyta, secondary peat swamp forest

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