scholarly journals Diversity and habitat characteristics of macrozoobenthos in the mangrove forest of Lubuk Kertang Village, North Sumatra, Indonesia

2018 ◽  
Vol 19 (1) ◽  
pp. 311-317 ◽  
Author(s):  
MOHAMMAD BASYUNI ◽  
KRISTIAN GULTOM ◽  
ANNISA FITRI ◽  
IPANNA ENGGAR SUSETYA ◽  
RIDHA WATI ◽  
...  
Keyword(s):  
Water Quality ◽  
Mangrove Forest ◽  
Diversity Index ◽  
Similarity Index ◽  
Principal Component ◽  
Habitat Characteristics ◽  
Mangrove Forests ◽  
Dominance Index ◽  
Plastic Bag ◽  
North Sumatra

asyuni M, Gultom K, Fitri A, Susetya EA, Wati R, Slamet B, Sulistiyono N, Yusriani E, Balke T, Bunting P. 2018. Diversity and habitat characteristics of macrozoobenthos in the mangrove forest of Lubuk Kertang Village, North Sumatra, Indonesia. Biodiversitas 19: 311-317. Mangrove plays an important role in coastal ecosystems including ecological, social, and economic aspects. This study aimed to determine the diversity of macrozoobenthos and water quality based on diversity index (H’), similarity Index (E), and dominance index (D) in the mangrove of Lubuk Kertang Village North Sumatra, Indonesia. The samples of macrozoobenthos (biological parameter) and water quality (physical and chemical parameters) were collected from fifteen plots in three different stations. Macrozoobenthos were collected in 1 m × 1 m transect in the mangrove forest. The biota was taken by using a shovel, inserted into a plastic bag, and identified. Results showed that eight species of macrozoobenthos were found and classified into three classes of Gastropod, Bivalvia, and Malacostraca. The highest diversity index (H′) of macrozoobenthos was found at Station II (2.39), the highest evenness index (E) was located at Station I (0.54), and the highest dominance index (D) was found at Station II (0.34). Principal component analysis (PCA) was used to determine the habitat characteristics of macrozoobenthos. PCA confirmed that station III was a habitat with suitable characteristics for the life of macrozoobenthos indicating the negative axis. The present study suggested four parameters namely salinity, clay temperature, and dissolved oxygen that should be preserved to support the survival of macrozoobenthos in the mangrove forests.

scholarly journals KEANEKARAGAMAN JENIS GASTROPODA DI HUTAN MANGROVE SUNGAI KAKAP KABUPATEN KUBU RAYA

2019 ◽  
Vol 7 (2) ◽  
Author(s):  
Emanuel Luis Rosario ◽  
M Sofwan Anwari ◽  
Slamet Rifanjani ◽  
Herlina Darwati
Keyword(s):  
Mangrove Forest ◽  
Local Community ◽  
Diversity Index ◽  
Similarity Index ◽  
Dense Medium ◽  
Mangrove Forests ◽  
Vegetation Density ◽  
Sparse Vegetation ◽  
Mangrove Tree ◽  
Observation Method

Gastropod is one of the mollusk phylum that can adapt and decompose in mangrove forests. The mangrove forest in Sungai Kakap is an area that is slowly being opened due to the local community people’s activities. They opened land to build buildings, farms, and villages. This research is aimed at studying the diversity of Gastropod and the influence of the mangrove tree density on the gastropod diversity in the mangrove forest of Sungai Kakap, Sungai Kakap Village of Kubu Raya Regency. The data were taken in May 2018. The analysis was conducted using the observation method by making six observation lines. The lines were differentiated based on the density of the vegetations: dense, medium, and sparse. The number of Gastropods found in the Kakap River mangrove forest is 4 types of gastropods with a total of 252 individuals. Respectively from dense, medium, and sparse vegetation, the gastropod dominance index is 0.68, 0.37, and 0.51; the diversity index is 0.25, 0.49, and 0.33; the species average index is 0.27, 0.97, and 0.4; and the gastropod species richness index is 4.03, 1.18, and 0.7. Lastly, the species similarity index is respectively 86%, 66%, and 86%. Keywords: Gastropod, Mangrove Forests, Vegetation density.

scholarly journals STRUKTUR KOMUNITAS MAKROALGA DI PANTAI GEGER DAN PANTAI MENGENING KABUPATEN BADUNG

2021 ◽  
Vol 9 (1) ◽  
pp. 51
Author(s):  
Ni Putu Sintha Maharani ◽  
Ni Luh Watiniasih ◽  
Ayu Putu Wiweka Krisna Dewi
Keyword(s):  
Water Quality ◽  
Community Structure ◽  
Diversity Index ◽  
Habitat Characteristics ◽  
Dominance Index ◽  
Sandy Substrate ◽  
Stable Conditions ◽  
Evenness Index ◽  
Coral Rock ◽  
Stems And Leaves

Macroalgae is a type of flora known as seaweed and is classified into low-level plants, where roots, stems, and leaves are relatively difficult to distinguish. This study aims to determine the differences of habitat characteristics, number of species, biomass, and macroalgae community structure in Geger Beach and Mengening Beach. This quadrant transect method was used to collect the data. The results show that Geger Beach has sandy substrate, while Mengening Beach has substrate consisting of coral rock. The water quality in both locations are still suitable for macroalgae growth. The results of the study found 8 types of macroalgae in Geger Beach and 10 types of macroalgae in Mengening Beach. The highest macroalgae biomass at Geger Beach was found in Gracilaria hayi with the weight ranging from 72.08-73.18 g/m2, while at Mengening Beach was found in the Valonia aegagropila, ranging from 181.31-190.40 g/m2. The diversity index of macroalgae in Geger Beach was between 1.93-1.99, while at Mengening Beach was between 1.79-2.07, therefore categorized as medium. The dominance index of macroalgae at Geger Beach was between 0.15-0.17, while at Mengening Beach was between 0.17-0.25, therefore the dominance index at both site was categorized low. The evenness index at Geger Beach was between 0.93-0.96, while at Mengening Beach was between 0.78-0.90, which categorized as stable conditions.

scholarly journals KOMUNITAS AVIFAUNA DI SEPANJANG ALIRAN ANAK SUNGAI WAILAWA DESA TAWIRI KECAMATAN TELUK AMBON, KOTA AMBON

2018 ◽  
Vol 6 (2) ◽  
pp. 177
Author(s):  
Andri Tuhumury
Keyword(s):  
Mangrove Forest ◽  
Diversity Index ◽  
Mixed Forest ◽  
Bird Species ◽  
Similarity Index ◽  
Bird Communities ◽  
Mangrove Forests ◽  
Point Count ◽  
Wiener Diversity Index ◽  
Foraging Guild

The study was conducted in April 2017, located along the Wailawa watercourses, Tawiri Village, Ambon. The method applied in these studies were Point Count, while data analysis using Shannon-Wiener Diversity Index, Evenness Index, Domination Index, Similarity Index, and Guild Composition. The results showed that the number of bird species found along Wailawa watercourse were 28 species of 25 genera, 17 families, and 8 orders. The diversity of bird species is moderate (H ‘= 2,54). The bird species similarity analysis resulted in three bird communities, including: (1) bird communities in mangrove forest, estuaries with grass vegetation, (2) bird communities in garden and settlement habitats, and (3) bird communities in mixed forest habitat. Mangrove forest and estuaries have the highest species similarities (0,63). Estuaries and mix gardens have the lowest bird similarities (0,05). Bird communities in mangrove forests and estuaries are heterogeneous because they have more species with a more equitable distribution of species abundance, while in other habitat, their are homogenous because of relatively have a low species diversity with uneven distribution of species abundance.Penelitian ini bertujuan menganalisis komunitas burung, meliputi kekayaan jenis, keanekaragaman jenis, kelimpahan relatif, kemerataan jenis, foraging guild, serta kesamaan jenis. Penelitian dilakukan pada bulan April 2017, berlokasi di sepanjang Anak Sungai Wailawa, Desa Tawiri, Kota Ambon. Metode pengambilan data adalah metode point count, sedangkan analisis data menggunakan Indeks Keanekaragaman Shannon-Wiener, Indeks Kemerataan Jenis Evennes, Indeks Dominasi Jenis, Indeks Kesamaan Jenis, dan Foraging guild. Hasil penelitian menunjukkan jumlah jenis burung yang ditemukan sebanyak 28 jenis dari 25 genus, 17 famili, dan 8 ordo. Keanekaragaman jenis burung tergolong sedang (H’ = 2,54). Hasil analisis tingkat kesamaan komunitas menghasilkan tiga komunitas burung, meliputi : (1) komunitas burung di hutan mangrove-muara sungai bervegetasi rumput, (2) komunitas burung di kebun dan permukiman, serta (3) komunitas burung di kebun campur. Hutan mangrove dan muara sungai memiliki kesamaan jenis burung tertinggi, yakni 0,63. Muara sungai dan kebun campur memiliki kesamaan jenis burung terendah, yakni 0,05. Komunitas burung di hutan mangrove dan muara sungai adalah komunitas heterogen karena memiliki lebih banyak spesies dengan distribusi kelimpahan spesies yang lebih merata, sedangkan komunitas burung pada tipe habitat lainnya adalah komunitas homogen karena keragaman jenis relatif rendah dan distribusi kelimpahan spesies tidak merata.

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 Keragaman Kondisi Salinitas Pada Lingkungan Tempat Tumbuh Mangrove di Teluk Kupang,NTT

2019 ◽  
Vol 17 (3) ◽  
pp. 425
Author(s):  
Jeriels - Matatula
Keyword(s):  
Mangrove Forest ◽  
Interpolation Method ◽  
Systematic Sampling ◽  
Mangrove Forests ◽  
Transect Line ◽  
Straight Line ◽  
Measurement Results ◽  
The Government ◽  
Systematic Sampling Method ◽  
North Sumatra

Mangrove forest ecosystems are  habitat of various types of microorganisms, but now, problems of mangrove forests experience are in quality and wealth. Efforts to rehabilitate activities  mangrove forests againts had been carried out but the results shown had not been maximized, so it is need the correct strategies  to achieve the success for rehabilitation activities. The studied was conducted in Teluk Kupang, East Nusa Tenggara, covered coastal areas of Kupang's mangrove forests and coastal mangrove forests in Kupang district. The method used in this studied was a systematic sampling method that was systematically distributed across all the mangrove forest areas. The method used for salinity measurement was  method of transmission and Transect Line Plots. Measurements was made in straight line and the size of the plot is 10 m x 10 m, the distanced between lines was 50 meters so that  total lane is 547 with the number of plots of observation 1641 plots. The value of  measurement results was made into the spread of salinity used the interpolation method. The condition of the crossed of  mangrove forest located on  coastal panoramas of  Kupang city shows a salinity value of 10,26 - 26.33%, while  salinity conditions was on the coast of  Kupang ten district 10-42.33 ‰. The salinity condition was formulation of the environmental conditions  mangrove forest on  coast of the island as well as attempts to support  management of mangrove forest activities. The distribution of different mangrove forest conditions along the coastal zone of North Sumatra shows an environmental condition that supports mangrove growth even though in some places the salinity values are high. Results of this study of salinity conditions is a study of the environment of mangrove growth so that it can provide an overview for the government in conducting various activities to rehabilitate mangrove forests.   

Avian species composition and ecological distribution in south lake wetland park, hohhot

2017 ◽  
Vol 17 (1) ◽  
pp. 36-41
Author(s):  
Namkhaidorj Sainbileg ◽  
Wang Tong ◽  
Yang Fan ◽  
Yang Guisheng
Keyword(s):  
Diversity Index ◽  
Bird Species ◽  
Bird Community ◽  
Residential Area ◽  
Habitat Characteristics ◽  
Species Number ◽  
Resident Species ◽  
Wetland Area ◽  
Dominance Index ◽  
The Relationship

Species diversity and composition of bird community at South Lake Wetland Park in Hohhot city were investigated from October 2013 to September 2014. In total，64 bird species belonging to 33 families and 14 orders were recorded. There are 36 summer migrant species, 15 resident species, 11 traveling species and 2 winter migrant species found. The habitats of birds were grouped into four types (wetland, woodland, grassland and residential area) according to topography and vegetation types in the survey area．Shannon-Weiner Diversity Index (H`) was 2.9450 in wetland area and 1.0768 in grassland area the highest and the lowest values, respectively. The evenness of bird species was 0.4058 lowest in woodland and 0.7581 highest in residential area. The dominance index of bird species was 0.0733 lowest in the wetland and 0.4319 highest in the woodland, respectively. This paper analyzed the relationship between the main dominant bird species and their habitat characteristics，explained the main reasons for the increased bird species number.

scholarly journals Abundance and Diversity of Diatom Class Bacillariophyceae as Bioindictaor of Pollution in the Waters of Tanjung Luar Fish Landing Based

2021 ◽  
Vol 20 (3) ◽  
pp. 525
Author(s):  
Niswatul Audah ◽  
Lalu Japa ◽  
M. Yamin
Keyword(s):  
Random Sampling ◽  
Sampling Method ◽  
Diversity Index ◽  
Similarity Index ◽  
Pollution Level ◽  
Dominance Index ◽  
Systematic Random Sampling ◽  
Species Similarity ◽  
Sample Points ◽  
Abundance And Diversity

Tanjung Luar is coastal water used as a waste disposal area for Fish Landing Based (FLB) activities. However, the condition of the waters with phytoplankton as a bioindicator has never been reporting. This research aims to know Bacillariophyceae in terms of abundance, diversity, and measurement of environmental pollution variables. Methods Sampling at the study location was determined by a systematic random sampling method. Data analysis Bacillariophyceae were determined using formula abundance, diversity index, and dominance index. The index of similarity of species between sample points was determined based on the Bray-Curtis Cluster Analysis. Furthermore, the results showed an abundance of Bacillaryophyceae of 322,000 individuals / L classified as low, the diversity index of Bacillariophyceae of 2.162 classified as moderate, and a dominance index of 0.138 (without dominating species). The results showed that the highest species similarity index was between sample points II and III (57.9%), and the lowest species similarity index between sample points I and II was 23.7%. Water pollution on the waters of PPI Tanjung Luar is classified as moderate pollution level and oligotrophic fertility.

scholarly journals Correlation between macroalgae diversity and water quality in Southwest Maluku waters

2020 ◽  
Vol 45 (1) ◽  
pp. 25-32
Author(s):  
Marsya Jaqualine Rugebregt ◽  
Hairati Arfah ◽  
Ferdinand Pattipeilohy
Keyword(s):  
Water Quality ◽  
Principal Component Analysis ◽  
Species Composition ◽  
Diversity Index ◽  
Principal Component ◽  
Quality Parameters ◽  
Nursery Ground ◽  
Water Sampler ◽  
Phosphate Nitrate ◽  
Seawater Quality

Macroalgae play an important role in the ecosystem of the coastal area, serving as a shelter ground, nursery ground, and feeding ground. Macroalgae communities are directly influenced by water quality. This study aim was to determine the correlation between the macroalgae diversity and water quality in southwest Maluku waters. This research was conducted in September 2019 at seven research stations. Macroalgae samples were collected by transect method, while seawater quality was measured using Van Dorn Water Sampler. The macroalgae diversity, species composition, and dominance were determined. Water quality parameters analyzed were temperature, salinity, pH, phosphate, nitrate, and ammonia. Correlations between macroalgae diversity and water quality were determined using principal component analysis. This study recorded 45 species of macroalgae consisting of 15 species of red algae (Rhodophyta), 6 species of brown algae (Phaeophyta), and 24 species of green algae (Chlorophyta). Diversity Index varied ranged from low to moderate categories (0.969 - 2.345). Water quality in general is still quite good for macroalgae life. Macroalgae diversity and water quality correlate and influence each other.

scholarly journals Community Structure of Gastropods in Seagrass Meadows at Coastal Area of Nusi and Gersen, Nabire Regency

2020 ◽  
pp. 89
Author(s):  
Marce Souisa ◽  
Simon P. Leatemia ◽  
Selfanie Talakua
Keyword(s):  
Coastal Waters ◽  
Diversity Index ◽  
Similarity Index ◽  
Seagrass Habitat ◽  
Dominance Index ◽  
Seagrass Meadows ◽  
Physical Chemical ◽  
Seagrass Ecosystem ◽  
Measurement Results ◽  
Chemical Factors

Gastropods plays an important role in the food chain on seagrass ecosystem and its existence are depend on the physical-chemical factors in the seagrass ecosystem. This study aims to determine the density and diversity of gastropods associated in seagrass habitat in Nusi and Gersen coastal waters. The measurement results of some physical-chemical waters variables, are still quite good for the life of gastropods. Species composition of gastropod in Nusi at higher than at the Gersen, but instead of individual density in Gersen more higher than Nusi. Diversity index of gastropods at Nusi station is higher (3,757) than Gersen (3.053), on the contrary the eveness and dominance index are higher at Gersen station than Nusi station. Community similarity index by species is low between the two stations, which indicates that the species of gastropods at both stations is quite different. The influence of human activity and higher utilizatin of gastropods in Nusi has lowered the density of gastropods in seagrass habitat, so it needs awareness efforts on the importance of gastropods and the seagrass habitat for coastal ecosystem.

scholarly journals Jumlah dan Jenis Fitoplankton Di Muara Sungai Banjir Kanal Barat Semarang

2020 ◽  
Vol 9 (3) ◽  
pp. 261-270
Author(s):  
Anantya Setya Perdana ◽  
Raden Ario ◽  
Hadi Endrawati
Keyword(s):  
Water Quality ◽  
River Flow ◽  
Diversity Index ◽  
Evaluation Criteria ◽  
River Estuary ◽  
Aquatic Organisms ◽  
Household Waste ◽  
The West ◽  
Dominance Index ◽  
Polluted Waters

ABSTRAK: Muara Sungai Banjir Kanal Barat merupakan muara sungai terbesar di Semarang yang alirannya langsung menuju ke laut. Terdapat beberapa aktifitas yang terjadi di sepanjang aliran ini, diantaranya yaitu aktifitas industri dan pemukiman penduduk. Selain itu, adanya pembuangan limbah rumah tangga yang masuk ke dalam badan sungai yang juga berdampak bagi perubahan kualitas perairan serta kehidupan ekosistem di sepanjang aliran sungai tersebut. Fitoplankton merupakan organisme perairan yang keberadaannya dapat dijadikan sebagai indikator kualitas perairan. Penelitian ini bertujuan untuk mengetahui komposisi, kelimpahan, indeks keanekaragaman, indeks keseragaman, dan indeks dominasi fitoplankton di Muara Sungai Banjir Kanal Barat Semarang. Penelitian ini dilakukan pada Oktober-Desember 2019. Metode yang digunakan adalah metode deskriptif eksploratif. Pengambilan sampel dilakukan sebanyak tiga periode dengan interval dua minggu sekali di tiga stasiun. Stasiun 1 merupakan perairan air tawar, stasiun 2 merupakan muara dan stasiun 3 merupakan perairan air laut. Hasil penelitian menunjukkan bahwa terdapat 24 genus fitoplankton dari 3 kelas, yaitu 17 genus dari kelas Bacillariophyceae, 5 genus dari kelas Dinophyceae dan 2 genus dari kelas Cyanophyceae dengan kelimpahan terbesar terdapat pada Stasiun 3 sebesar 67669 sel/L dan terendah pada Stasiun 1 sebesar 52287 sel/L, indeks keanekaragaman termasuk kategori sedang. Indeks keseragaman termasuk dalam kategori tinggi, indeks dominansi termasuk dalam kategori tidak ada jenis yang mendominasi. Berdasarkan kriteria penilaian menurut Shannon – Wiener bahwa perairan tersebut tergolong ke dalam perairan tercemar sedang. ABSTRACT: The Banjir Kanal Barat River Canal is the largest river estuary in Semarang that flows directly to the sea. There are several activities that occur along this flow, including industrial activities and human settlements. In addition, the disposal of household waste that enters the river body also has an impact on changes in water quality and ecosystem life along the river flow. Phytoplankton is aquatic organisms whose existence can be used as indicators of water quality. This study aims to determine the composition, abundance, diversity index, uniformity index, and a dominance index of phytoplankton in the West Banjir Canal River Estuary in Semarang. This research was conducted in October-December 2019. The method used is a descriptive exploratory method. Sampling was conducted in three periods with biweekly intervals at three stations. Station 1 is freshwater waters, station 2 is estuary and station 3 is seawater waters. The results showed that there were 24 genera of phytoplankton from 3 classes, namely 17 genera from the Bacillariophyceae class, 5 genera from the Dinophyceae class and 2 genera from the Cyanophyceae class with the greatest abundance at Station 3 at 67669 cells/L and lowest at Station 1 at 52287 cells/L, the diversity index is in the medium category. Uniformity index is included in the high category, dominance index is included in the category of no species that dominates. Based on the evaluation criteria according to Shannon-Wiener that the waters are classified as medium polluted waters.

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