Seagrass Diversity in the Western and Eastern Sites of Igang Bay, Guimaras Philippines

2013 ◽  
Vol 5 (1) ◽  
Author(s):  
ROLANDO A. ALIMEN ◽  
CORNELIO M. SELORIO, JR.
Keyword(s):  
Seagrass Meadow ◽  
Diversity Index ◽  
Similarity Index ◽  
Marine Ecology ◽  
Line Transect ◽  
Percent Cover ◽  
Thalassia Hemprichii ◽  
Percentage Cover ◽  
Interaction Index ◽  
Eastern Site

Seagrass is a unique angiosperm that grows in the sea. It is one of the three ecosystems that linked each other that equilibrate marine coastal environment. The increased rate of the destruction of the seagrass meadow calls an alarming threat to the anthropogenic community. The study determined the percentage cover and diversity of indexes of the seagrass in Igang Bay before the anthropogenic threat happened. Line transect – quadrat method was used and analyzed using Kruskal-Wallis test and Mann-Whitney test before subjected to similarity and overlap attribute, diversity, maximum diversity, evenness and dominance indexes. There are nine species of seagrasses, three species in western sites and nine in eastern sites. Canopy height and percent cover of seagrass has inverse interaction. Index of similarity between two sites is 0.3333 and 0.4286 for overlap attribute. Eastern site has higher diversity index and February is the highest at 1.24 and 2.10 in maximum diversity. The seagrass distribution is even after inter-monsoon at 0.71 and 0.12 in Eastern site and Western site, respectively. Thalassia hemprichii is the dominant species at both sites, and peak at July at both sites. In general, the Igang Bay seagrass meadow is Thalassia mixed meadow.Keywords: Marine Ecology, Seagrass, Igang Bay, percent cover, similarity index, diversityindex, evenness and dominance, descriptive design, Philippines

Community structure of seagrass beds in Arakan, South Minahasa Regency

2013 ◽  
Vol 1 (1) ◽  
pp. 32
Author(s):  
Sendy L Merly ◽  
Billy T Wagey ◽  
Grevo S Gerung
Keyword(s):  
National Park ◽  
Seagrass Meadow ◽  
Diversity Index ◽  
Line Transect ◽  
Thalassia Hemprichii ◽  
Enhalus Acoroides ◽  
Halophila Ovalis ◽  
Important Index ◽  
Syringodium Isoetifolium ◽  
Index Value

Arakan waters is located in front of Arakan Wawontulap district as part of Bunaken National Park. This area has a vast seagrass meadow of 1943.45 ha. Seagrass-Watch method combined with line transect and quadrat methods were used to collected data. Four seagrass species were identified such as Halophila ovalis, Thalassia hemprichii, Enhalus acoroides and Syringodium isoetifolium. Diversity Index (H') was quite high at 1.2071 and was inversely correlated to the value of dominance (D) at 0.3366, and this was supported by the presence of a uniform species (J') of 0.8707. Important Index Value (INP) was highest at station I comprising E. acoroides species, and station II comprising E. acoroides and T. hemprichii, while the third station comprised T. hemprichii. Spatial distribution of the three stations ranged from random to contagious (aggregated)© Perairan Desa Arakan termasuk dalam kawasan Taman Nasional Bunaken wilayah Arakan Wawontulap yang memiliki luas area padang lamun sekitar 1.943,45 Ha. Data dikoleksi menggunakan metode seagrass-watch yang dikombinasikan dengan metoda transek garis dan kuadran. Empat spesies lamun berhasil diidentifikasi yaitu Halophila ovalis, Thalassia hemprichii, Enhalus acoroides dan Syringodium isoetifolium. Nilai Indeks Keanekaragaman (H’) cukup tinggi yakni 1,2071 berbanding terbalik dengan Nilai Dominansi (D) yang rendah yakni 0,3366 dan ditunjang dengan keberadaan spesies yang merata (J’) senilai 0,8707. Indeks Nilai Penting (INP) tertinggi pada Stasiun I diperlihatkan oleh E.acoroides, Stasiun II oleh E.acoroides dan T.hemprichii, dan sedangkan Stasiun III oleh T. hemprichii. Adapun pola penyebaran pada ketiga stasiun ini berkisar antara acak (random) dan mengelompok (contagious)©

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 Lamun di Pantai Tongkaina Kecamatan Bunaken Kota Manado

Jurnal MIPA ◽  
2014 ◽  
Vol 3 (1) ◽  
pp. 1
Author(s):  
Klion Ngongira ◽  
Marnix L. D. Langoy ◽  
Deidy Yulius Katili ◽  
Pience V. Maabuat
Keyword(s):  
Diversity Index ◽  
Wide Distribution ◽  
Line Transect ◽  
Thalassia Hemprichii ◽  
Purposive Sampling ◽  
Enhalus Acoroides ◽  
Halophila Ovalis ◽  
Sea Grass ◽  
Syringodium Isoetifolium ◽  
Cymodocea Serrulata

Lamun adalah tumbuhan berbunga yang dapat tumbuh dengan baik pada lingkungan laut dangkal. Penelitian ini dilaksanakan di pantai Tongkaina dengan menggunakan metode observasi lapangan pada purposive sampling dengan garis transek kuadrat. Analisis data meliputi perhitungan dengan rumus Krebs dan Fachrul, identifikasi jenis lamun dan penentuan indeks keanekaragaman menggunakan Shannon Wiener. Berdasarkan hasil penelitian terdapat tujuh jenis lamun yang ditemukan yaitu Enhalus acoroides, Thalassia hemprichii, Halophila ovalis, Cymodocea rotundata, Cymodocea serrulata, Holodule pinifolia dan Syringodium isoetifolium. Lamun Enhalus acoroides dan Thalassia hemprichii memiliki penyebaran terluas, karena ditemukan di seluruh transek pada lokasi penelitian. Jenis yang jarang dijumpai adalah Halophila ovalis dan Holodule pinifolia. Jumlah individu yang ditemukan adalah 2993 individu. Nilai indeks keanekaragaman di pesisir Pantai Molas memperlihatkan bahwa di wilayah ini keanekaragaman jenis lamun sedang bila dibandingkan dengan 13 lokasi lainnya di Indonesia.Sea grasses are flowering plants that can grow well in shallow marine environments. This research was conducted in Tongkaina Beach using field observation, with purposive sampling using line transect squares. Data analysis was performed using the formula of Krebs and Fachrul. Identification of sea grass and determination of diversity index is done using Shannon Wiener. Results obtained in this research showed that there are seven types of sea grasses, namely Enhalus acaroides, Thalassia hemprichii, Halophila ovalis, Cymodecea rotundata, Cymodocea serrulata, Holodule pinifolia, and Syringodium isoetifolium. Enhalus acoroides and Thalassia hemprichii have wide distribution because they can be found in all transect line at research site. Species that are rarely found are Halophila ovalis and Holodule pinifolia. Number of individual found was 2993. Value of diversity index at Tongkaina Beach showed that this area has moderate sea grass diversity compared to other 13 locations in Indonesia.

scholarly journals KEANEKARAGAMAN JENIS BURUNG PADA HUTAN DATARAN RENDAH DI KOMPLEKS GUNUNG BULUSARAUNG TAMAN NASIONAL BANTIMURUNG BULUSARAUNG

PERENNIAL ◽  
2019 ◽  
Vol 15 (1) ◽  
pp. 16
Author(s):  
Risma Illa Maulany ◽  
Jumriah Lira ◽  
Amran Achmad ◽  
Nida' Sari Achmad
Keyword(s):  
National Park ◽  
Wildlife Conservation ◽  
Diversity Index ◽  
Bird Species ◽  
Similarity Index ◽  
Bird Diversity ◽  
Line Transect ◽  
Lowland Forest ◽  
South Sulawesi ◽  
Bird Watching

Lowland Forest at the complex of Bulusaraung mountain  in the Bantimurung Bulusaraung National Park is one of important habitat of birds in South Sulawesi. This study aimed to identify bird’s diversity in the Lowland Forest of Bantimurung Bulusaraung National Park for ecotourism purposes. This research was carried out for 2 months between April and May 2018. The data were gathered by using line transect method. The data were analyzed by using Shannon-Weiner diversity index, Evenness index, Margalef species richness index, and Sorensen Similarity index. The result of the study showed that, there were 23 species of birds found in the three lines of observation tracks. There were 19 species  found in Balleanging, 12 species  in Kattokaddaro and 15 species  found in Tompobulu.The highest value of bird diversity index was found in Tompobulu (H '= 1,73) followed by Balleanging (H' = 1,54) and Kattokaddaro routes (H '= 1,43). Therefore, the diversity of bird species in the three observation pathways can be used as objects and attractions in the development of ecotourism based on bird watching in wildlife conservation efforts.

scholarly journals Keanekaragaman dan Kelimpahan Belalang dan Kerabatnya (Orthoptera) pada Dua Ekosistem Pegunungan di Taman Nasional Gunung Halimun-Salak

2015 ◽  
Vol 7 (2) ◽  
pp. 100
Author(s):  
NETY VIRGO ERAWATI ◽  
SIH KAHONO
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
National Park ◽  
Diversity Index ◽  
Sampling Site ◽  
Similarity Index ◽  
Line Transect ◽  
Light Traps ◽  
Set Up ◽  
Sweep Net

A study on diversity and abundance of grasshopper and its relatives (Orthoptera) was conducted at two mountainous rainforest ecosystems (Mounts Kendeng and Botol) of Gunung Halimun-Salak National Park. A hundred meters of a line transect was used to sample and set up several insect traps (yellow pan, malaise, pit fall, bait pit fall, sweep net, and light traps), and insect sweepings as well. The light traps were set up at about fifty meters distance from the end of the sampling sites. A total individual collected by traps was combined on every comparable sampling site. Total individuals of the Orthoptera captured were 414; consisted of 25 species of 9 families. Both species diversity and number of families were higher at Mount Kendeng rather than Mount Botol. Number of species of each family usually similar except on family of Grillidae was much higher at Mount Kendeng. Species belong to Phasmidae was not recorded at Mount Kendeng, while species belong to both families of Gryllotalpidae and Tettigonidae were not captured at Mount Botol as well. Overal there was a difference in the species richness at each between. Shannon Diversity Index (H’) and evenness (E) were higher at Mount Kendeng (2.44 and 0.81) rather than Mount Botol (1.80 and 0.66). Similarity Index of Jaccard (Cj) and Sorenson (Cn) of both localities were similar (0.40 and 0.32). Herbivores were most dominant at both localities (Phasmidae, Tetrigidae, Acrididae, Gryllidae, dan Gryllotalpidae), followed by omnivores (Blattidae), scavenger (Gryllacrididae), and predator (Mantidae).

scholarly journals Determining seagrassess community structure using the Braun – Blanquet technique in the intertidal zones of Islas de Gigantes, Philippines

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Quin Yudelmo Clarito ◽  
Nora O. Suerte ◽  
Elena C. Bontia ◽  
Ivy Maestrecampo Clarito
Keyword(s):  
Species Diversity ◽  
Diversity Index ◽  
Environmental Parameters ◽  
Mean Value ◽  
Canopy Height ◽  
Thalassia Hemprichii ◽  
Percentage Cover ◽  
Seagrass Ecosystems ◽  
Cymodocea Rotundata ◽  
Syringodium Isoetifolium

The seagrass ecosystem which is considered the most productive ecosystem occurs in tropical and subtropical shallow marine waters where it supports diverse flora and fauna. Seagrasses of Islas de Gigantes, Carles, Iloilo were assessed to  determine species diversity, abundance, canopy height and percentage cover. Braun – Blanquet technique was used where 3 transects were laid in each station in three barangays of Islas de Gigantes, namely: Barangay Asluman, Barangay Granada and Barangay Gabi. A total of 7 species were found, Thalassia hemprichii, Cymodocea rotundata, Cymodocea serrulata, Halodule pinifolia, Halodule uninervis, Enhalus acoroides and Syringodium isoetifolium. Using the Shannon Diversity Index, the seagrass bed in Gabi was the most diverse with a value of 2.8. Sorenson's coefficient (CC) was used to compute the species similarity attributes indicating that the three communities have many similarities to each other in terms of species diversity and environmental parameters that affect seagrass ecosystems. Syringodium isoetifolium had recorded the highest number of shoots (475 shoots/m2) in Granada. The percentage cover of seagrasses varied across the sampling sites ranging from 55% - 67.50%, with a mean value of 62.50%. However, E. acoroides had the tallest canopy height recorded that  ranged from 12.33 – 24.83 cm.

scholarly journals Coral Reef Fishes Biodiversity In Pahawang Island,Pesawaran District Lampung

AQUASAINS ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 887
Author(s):  
Darma Yuliana ◽  
Ayu Rahmasari ◽  
Herman Yulianto ◽  
Abdullah Aman Damai
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Coral Reef Fish ◽  
Diversity Index ◽  
Similarity Index ◽  
Reef Fishes ◽  
Coral Reef Fishes ◽  
Line Transect ◽  
Marine Tourism ◽  
Reef Health

The components of coral reef ecosystem can be described by the unique regulation in community level. Coral reef fishes use coral reef as their habitat and they highly depend on coral reef health. Otherwise, the condition of coral reef health can be predicted by the biodiversity of coral reef fishes. The research aim was describe communities differences between two explored area in marine tourism spots in Pahawang Island. This research was conducted on November 2019 at two stations on the coral reefs ecosystem of Pahawang Island represented the two quitely different area, the marine tourism and the visitor areas.  The coral reef fishes were observed by using visual census method with a Line Transect length of 30 meters and a visibility of 2.5 meters left and right of the transect.  Coral reef fish community structure was measured by diversity, similarity, and dominancy indexes. A total of 1.940 coral reef fish species from 13 families were recorded. Pomacentridae is the most speciose family (1.091 species), followed by Siganidae (308 species) and Labridae (166 species). Biodiversity of coral reef fishes at Pahawang Island showed results diversity index (H') in both observation stations classified as medium with a low dominance index value (C) and similarity index (E)  at both stations classified as high, presumably as a result of tourism activities. The diversity index at station 2 has a greater value than station 1 as a tourist area with diving and snorkeling tourism activities, at station 2 there are more types or genus of reef fish, compared to station 1.

scholarly journals The Diversity of Amphibian from Order Anura in the Protected and Utilization Blocks of Integrated Educational Conservation Forest, Wan Abdul Rachman Great Forest Park

2019 ◽  
Vol 7 (3) ◽  
pp. 370
Author(s):  
Kornelius Siahaan ◽  
Bainah Sari Dewi ◽  
Arief Darmawan
Keyword(s):  
Diversity Index ◽  
Similarity Index ◽  
Public Understanding ◽  
Survey Method ◽  
Line Transect ◽  
Community Similarity ◽  
Species Diversity Index ◽  
Forest Park ◽  
River Habitat ◽  
Protection And Utilization

Amphibians are part of biodiversity that spread in various places in the world. Amphibians have an important role in maintaining the balance of the ecosystem as part of the food chain system. However, lack of public understanding caused the potential of Anura amphibians to have not been explored optimally hence research on Anura amphibians in the Wan Abdul Rachman Great Forest Park (Tahura WAR) is very important to support Anura's conservation efforts. This study aims to understand and identify the diversity of Anura order amphibians in the Protection and Utilization Blocks of the Tahura WAR on forest and river habitat types. Data was collected by using Line Transect and Visual Encounter Survey method. Data collection using Line Transect was conducted by making a narrow transverse path at the observation site, while the Visual Encounter Survey was conducted by making a wildlife observation path with 3 replications. Analysis of the data used included amphibian diversity, community similarity index, and species evenness. The results found 25 individuals of Anura amphibians in the Protection Block and 40 individuals in the Utilization Block of Tahura WAR. Overall, 65 individuals were found consisting of 3 species of amphibians from 2 families i. e., 2 species of the Ranidae family and 1 species of the Bufonidae family. The results showed that the species diversity index, species richness index, and community similarity index in the Protection and Utilization Blocks of Tahura WAR were categorized as low. Reforestation needs to be done so that the Anura habitat is maintained.Keywords: amphibian, biodiversity, order Anura, Tahura WAR

scholarly journals Plant diversity in logged over forest in Mahakam Ulu, East Kalimantan, Indonesia

2021 ◽  
Vol 22 (11) ◽  
Author(s):  
Adhy widya Setiawan ◽  
ALBERTUS TJIU ◽  
ARI MEIDIDIT ◽  
ISWINANTO ISWINANTO ◽  
AMMAR GINANJAR ◽  
...  
Keyword(s):  
Plant Diversity ◽  
Diversity Index ◽  
Similarity Index ◽  
Iucn Red List ◽  
Tree Level ◽  
Line Transect ◽  
Importance Value Index ◽  
Importance Value ◽  
East Kalimantan ◽  
Wiener Diversity Index

Abstract. Setiawan AW, Tjiu A, Meididit A, Iswinanto, Ginanjar A, Atut Y, Agusti R. 2021. Plant diversity in logged over forest in Mahakam Ulu, East Kalimantan, Indonesia. Biodiversitas 22: 4829-4838. A study of flora was conducted in the Ratah Timber concession area. Objectives of this study was to calculate the Importance Value Index (IVI) and identify species diversity in Mahakam Ulu, East Kalimantan. A survey was carried out in 128 plots within 13 transects placed purposively. Vegetation sampling was conducted using line transect and a quadrat method. As many as 530 species belonging to 79 families were found. Of these species, 420 species were found in observation plots with 374 of the species being tree. The most dominant tree species were Endertia spectabilis, Shorea pinanga and Shorea leprosula with IVI of 10.24%, 8.25%, and 6.96%, respectively. In total, 114 species or 21.5% are endemic species of Borneo. The Shannon-Wiener diversity index at tree level was 5.51 and at seedling level was 4.95. The highest Similarity Index was found between transects 23 and 21, meanwhile the lowest was between transects 05 and 15. This study found 61 species which are classified on the International Union for Conservation of Nature (IUCN) Red List (2020-1) as critically endangered (16), endangered (11), and vulnerable (34) species.

scholarly journals Community Structure of Seagrass in Coastal Waters of Bahoi Village, West Likupang Sub-district, North Minahasa Regency, North Sulawesi Province

2016 ◽  
Vol 3 (2) ◽  
pp. 63
Author(s):  
Kurnia Tolule ◽  
Alex D. Kambey ◽  
Ari B. Rondonuwu
Keyword(s):  
Structure Analysis ◽  
Coastal Waters ◽  
Diversity Index ◽  
Line Transect ◽  
Thalassia Hemprichii ◽  
Enhalus Acoroides ◽  
North Sulawesi ◽  
Halophila Ovalis ◽  
Cymodocea Rotundata ◽  
Syringodium Isoetifolium

This study was aimed at revealing the structure of seagrass community in the coastal waters of Bahoi Village, West Likupang Sub-district, District of North Minahasa, North Sulawesi Province. Samples collection was conducted during the lowest tide period by deploying line transect and quadrate. Eight species of seagrasses were identified on this study, including species as follow: Enhalus acoroides, Thalassia hempricihii, Cymodocea rotundata, C. serrulata, Syringodium isoetifolium, Hlodule pinifolia, H. uninervis and Halophila ovalis. The highest density value ( 112.16 individual/m2) was calculated from transect III data on S. isoetifolium species. In term of relative density value, S. isoetifolium also has the highest value (35.176 %). Index dominance (C) was calculated as well from transect III data (0.477) while the highest diversity index  (H’) was calculated from transect I data (1.724). Keyword : structure, Analysis, seagrass ABSTRAK Penelitian ini bertujuan mengkaji struktur komunitas lamun di perairan pantai Desa Bahoi Kecamatan Likupang Barat Sulawesi Utara.Pengambilan sampel  dilaksanakan sekali pada saat surut terendah, data dikumpulkan berdasarkan garis transek dan kuadrat. Jenis lamun yang ditemukan dalam keseluruhan kuadrat di lokasi penelitian berjumlah 8 spesies yaitu : Enhalus acoroides, Thalassia hemprichii, Cymodocea rotundata, Cymodocea serrulata, Syringodium isoetifolium, Halodule pinifolia, Halodule uninervis, dan Halophila ovalis. Kepadatan individu tertinggi terdapat pada transek III yaitu spesies Syringodium isoetifolium 112,16 ind/m2. Kepadatan relatif tertinggi terdapat pada spesies Syringodium isoetifolium (35,176 %). Indeks dominasi (C) yang tertinggi terdapat pada transek III 0.477 indeks keanekaragaman spesies (H’) yang tertinggi pada transek I 1.724. Keyword : structure, Analysis, seagrass 1Mahasiswa Program Studi MSP FPIK-UNSRAT 2Staf pengajar Fakultas Perikanan dan Ilmu Kelautan Universitas Sam Ratulangi

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