scholarly journals COMMUNITY STRUCTURE OF FORAMINIFERA IN SURFACE SEDIMENTS AND CORRELATION WITH ENVIRONMENTAL CONDITIONS IN OFFSHORE WATERS OF BALIKPAPAN, MAKASSAR STRAIT

2016 ◽  
Vol 7 (2) ◽  
Author(s):  
Suhartati M. Natsir ◽  
Aulya Firman ◽  
Indah Riyantini ◽  
Isni Nurruhwati
Keyword(s):  
Community Structure ◽  
Benthic Foraminifera ◽  
Surface Sediments ◽  
Planktonic Foraminifera ◽  
Sediment Type ◽  
Chemical Parameters ◽  
Sediment Samples ◽  
Sediment Types ◽  
Physical And Chemical Parameters ◽  
Physical And Chemical

The distribution of foraminifera is influenced by several environmental factors such as depth, sediment type, chemical and physical oceanographic paramaters, and season. The aim of the study was to determine the foraminiferal assemblages and their relationship to physical and chemical parameters in the offshore of Balikpapan waters of Makassar Strait such as depth, temperature, currents, sediment types, and salinity. Surface sediment, physical, and chemical parameters sampling was conducted in April 2012. The results of the observations on the sediment samples recognized planktonic foraminifera in 6 genera and 40 genera of benthic foraminifera from the 6 stations. Biodiversity of planktonic foraminifera was categorized in a low category with a range of 0.198-0.525. However, biodiversity for benthic foraminifera was categorized in a high category with a range of 0.811-0.925. Dominance of planktonic foraminifera was medium to high with range of 0.474-0.802 which was assumed due to the sampling sites as an open waters. Meanwhile, dominance for benthic foraminifera was in a low category with range of 0.075-0.189. The most common planktonic foraminifera was found from Genus Globigerina (10538 individuals). While, the most abundant of benthic foraminifera was found from Genus Amphistegina (3134 individuals).  Keywords: abundance, foraminifera, sediment, and Makassar Strait

scholarly journals COMMUNITY STRUCTURE OF FORAMINIFERA IN SURFACE SEDIMENTS AND CORRELATION WITH ENVIRONMENTAL CONDITIONS IN OFFSHORE WATERS OF BALIKPAPAN, MAKASSAR STRAIT

2016 ◽  
Vol 7 (2) ◽  
Author(s):  
Suhartati M. Natsir ◽  
Aulya Firman ◽  
Indah Riyantini ◽  
Isni Nurruhwati
Keyword(s):  
Community Structure ◽  
Benthic Foraminifera ◽  
Surface Sediments ◽  
Planktonic Foraminifera ◽  
Sediment Type ◽  
Chemical Parameters ◽  
Sediment Samples ◽  
Sediment Types ◽  
Physical And Chemical Parameters ◽  
Physical And Chemical

<p><em>The distribution of foraminifera is influenced by several environmental factors such as depth, sediment type, chemical and physical oceanographic paramaters, and season. The aim of the study was to determine the foraminiferal assemblages and their relationship to physical and chemical parameters in the offshore of Balikpapan waters of Makassar Strait such as depth, temperature, currents, sediment types, and salinity. Surface sediment, physical, and chemical parameters sampling was conducted in April 2012. The results of the observations on the sediment samples recognized planktonic foraminifera in 6 genera and 40 genera of benthic foraminifera from the 6 stations. Biodiversity of planktonic foraminifera was categorized in a low category with a range of 0.198-0.525. However, biodiversity for benthic foraminifera was categorized in a high category with a range of 0.811-0.925. Dominance of planktonic foraminifera was medium to high with range of 0.474-0.802 which was assumed due to the sampling sites as an open waters. Meanwhile, dominance for benthic foraminifera was in a low category with range of 0.075-0.189. The most common planktonic foraminifera was found from Genus Globigerina (10538 individuals). While, the most abundant of benthic foraminifera was found from Genus Amphistegina (3134 individuals). </em></p><p><em> </em><strong><em>Keywords:</em></strong><em> abundance, foraminifera, sediment, and Makassar Strait</em></p>

scholarly journals THE CORRELATION BETWEEN BENTHIC FORAMINIFERA AND SEDIMENT TYPES OF SOUTH MAKASSAR STRAIT

2016 ◽  
Vol 29 (2) ◽  
pp. 53
Author(s):  
Sheilla Zallesa ◽  
Kresna Tri Dewi ◽  
Noor C.D. Aryanto
Keyword(s):  
Community Structure ◽  
Benthic Foraminifera ◽  
Diversity Index ◽  
Silty Sand ◽  
Sediment Type ◽  
Sediment Characteristics ◽  
Core Sediment ◽  
Sandy Silt ◽  
Sediment Types ◽  
The Pacific

South Makassar Strait is located between Kalimantan and Sulawesi Islands that is an important oceanographic pathway connecting between the Pacific and Indian oceans. This area is a part of sedimentary basin that has specific seabed morphology and sediment characteristics, including foraminifera as a component of sediments. The purpose of this study is to determine community structure of benthic foraminifera related to sediment characteristics. This study used 20 top core sediment samples from water depth between 200 and 1500 m. There are identified 38 species of benthic foraminifera and some of them are characterized the study area: Anomalinoides colligerus, Lenticulina suborbicularis, Planulina wuellerstorfi, , and Pseudonodosaria discrete. The diversity index is categorized as moderate values (1.0=H'= 3) and the average of evenness values is about 0.79. The dominance values are less than 0.5 indicate that there is no dominant species in the study area. In relation to sediment characteristics, it shows that the high abundance of benthic foraminifera occurs in sediment type of silty sand and sandy silt. Moderate abundance appears in sand following by low abundance in silt and sandy silt sediment types. Keywords: benthic foraminifera, community structure, sediment types and Makassar Strait Makassar bagian selatan terletak diantara Pulau Kalimantan dan Sulawesi yang merupakan jalur oseanografik yang penting menghubungkan Samudera Pasifik dan. Wilayah ini merupakan bagian dari cekungan sedimen yang mempunyai morfologi dasar laut dan karakteristik sedimen tertentu termasuk foraminifera sebagai komponen sedimen. Tujuan dari penelitian ini adalah untuk mengetahui struktur komunitas foraminifera bentik dalam kaitannya dengan tipe sedimen dasar laut. Penelitian ini menggunakan 20 sampel sedimen bagian atas dari pemercontoh inti pada kedalaman antara 200 dan 1500 m. Ada 38 spesies foraminifera bentik dan beberapa diantaranya mencirikan daerah penelitian: Anomalinoides colligerus, Lenticulina suborbicularis, Planulina wuellerstorfi, dan Pseudonodosaria discrete. Indeks keanekaragaman termasuk dalam kategori sedang (1,0=H’=3) dan nilai rata-rata keseragaman sekitar 0,79. Nilai dominasi lebih kecil dari 0,5 itu menandakan tidak ada spesies yang dominan pada lokasi penelitian. Terkait dengan karakteristik sedimen menunjukkan bahwa kelimpahan foraminifera bentik tinggi terdapat pada jenis sedimen pasir lanauan dan lanau pasiran. Kelimpahan sedang ditemukan pada jenis sedimen pasir diikuti kelimpahan rendah yang dijumpai pada sedimen lanau dan lanau pasiran. Kata kunci: foraminifera bentik, struktur komunitas, jenis sedimen, Selat Makassar.

scholarly journals Perifiton Community Structure in Citarik River

2020 ◽  
pp. 1-8
Author(s):  
Heti Herawati ◽  
Nisa Hidayati Fitri ◽  
Zahidah . ◽  
Asep Sahidin ◽  
Izza Mahdiana Apriliani ◽  
...  
Keyword(s):  
Community Structure ◽  
Research Method ◽  
Diversity Index ◽  
Survey Method ◽  
Chemical Parameters ◽  
Dominance Index ◽  
Periphyton Community ◽  
Physical And Chemical Parameters ◽  
Index Value ◽  
Physical And Chemical

The purpose of this research is to determine the condition of waters in the Citarik River with the periphyton community as a bio indicator. This research was conducted from March-April 2019. The research method used was a survey method at 4 station points, five times sampling with a span of 7 days. The smallest periphyton abundance is in station IV which is 22 ind/cm2 and the most is in station I which is 18278 ind/cm2. Comparison of species deficit values at each station is different, this is influenced by different physical and chemical parameters. The dominance index value in the waters of the Citarik River ranges from 0.1 to 0.8 and the diversity index value ranges from 0.2 to 0.9. The results showed the Citarik River was in a mildly polluted condition.

scholarly journals DISTRIBUSI SPASIAL FORAMINIFERA DI PERAIRAN TELUK CENDERAWASIH, PAPUA BARAT

2020 ◽  
Vol 17 (2) ◽  
Author(s):  
Eko Saputro ◽  
Lili Fauzielly ◽  
Imelda Rosalina Silalahi ◽  
Winatris Winatris
Keyword(s):  
Spatial Distribution ◽  
Community Structure ◽  
Marine Sediments ◽  
Marine Sediment ◽  
Benthic Foraminifera ◽  
Planktonic Foraminifera ◽  
Sediment Samples ◽  
Enclosed Bay ◽  
Papua Barat ◽  
Good Environment

Sebanyak 20 sampel sedimen dari perairan Teluk Cenderawasih telah digunakan sebagai bahan studi foraminifera, yang bertujuan untuk mengetahui bagaimana sebaran spasial dan struktur komunitas foraminifera di perairan Teluk Cenderawasih. Hasil penelitian menunjukkan komposisi foraminifera planktonik yang terdiri dari 7 Genus dan 13 Spesies sedangkan foraminifera bentonik terdiri dari 57 Genus dan 87 Spesies. Foraminifera planktonik yang paling umum ditemukan karena muncul di seluruh sampel adalah genus Globigerinoides, terutama G. trilobus dan G. ruber. Sedangkan foraminifera bentonik didominasi oleh subordo Rotaliina, dan yang paling banyak ditemukan adalah genus Cibicidiodes dan Lenticulina. Keanekaragaman foraminifera planktonik dan bentonik termasuk dalam kategori tinggi dengan kisaran antara 0.82 – 0.90 (planktonik) dan 0.79 – 0.95 (bentonik). Kemerataan foraminifera planktonik dan bentonik juga termasuk dalam kategori tinggi dengan kisaran antara 0.83 – 0.99 (planktonik) dan 0.82–0.99 (bentonik). Sedangkan untuk dominasi foraminifera planktonik dan bentonik berada dalam kategori rendah dengan kisaran 0.10 – 0.18 (planktonik) dan 0.05 – 0.21 (bentonik). Hal ini menunjukkan bahwa Teluk Cendrawasih meskipun merupakan perairan yang semi tertutup, namun kondisinya masih sangat bagus bagi perkembangan foraminiferaKata Kunci : foraminifera, distribusi spasial, struktur komunitas, dan Teluk Cenderawasih A total of 20 marine sediment samples from Cenderawasih Bay waters have been used for foraminiferal study, . The purpose to describe the spatial distribution and structure of the foraminifera community in the waters of Cenderawasih Bay. The results indicate that marine sediments are composed of 7 genera and 13 species of planktonic foraminifera, and 57 genera and 87 species belong to benthic foraminifera. The most common planktonic foraminifera is Globigerinoides which is found in all location, particularly G. trilobus and G. ruber. Furthermore, benthonic foraminifera is dominated by subordo Rotaliina, particularly genera Cibicidoides and Lenticulina as the most common genera. Diversity of both Planktonic and benthonic foraminifera are categorized as high, the values are between 0.82 and 0.90, and between 0.79 and 0.95 respectively. Planktonic and benthonic foraminiferal evenness are also high with range value between 0.83 and 0.99 (planktonic), and between 0.82 and 0.99 (benthonic). In contrast, dominance of both foraminiferal type are low, between 0.10 and 0.18 for planktonic, and between 0.05 and 0.21 (benthonic).This indicates that despite a semi–enclosed bay, Cendrawasih Bay is still considered as a good environment for foraminiferal community. Keywords: foraminifera, spatial distribution, community structure, and Cenderawasih Bay.

scholarly journals Diversitas Komunitas Fitoplankton Di Danau Hias Gold Coast, Pantai Indah Kapuk-Jakarta

2020 ◽  
Vol 4 (2) ◽  
pp. 59-65
Author(s):  
Bambang Widigdo ◽  
Niken TM Pratiwi ◽  
Inna Puspa Ayu ◽  
Amelia Fitriani
Keyword(s):  
Community Structure ◽  
Diversity Index ◽  
Gold Coast ◽  
Chemical Parameters ◽  
Phytoplankton Communities ◽  
Physical And Chemical Parameters ◽  
Drainage Channels ◽  
One Year ◽  
Physical And Chemical

The Gold Coast ornamental lake at Pantai Indah Kapuk, Jakarta is artificial, shallow and not too wide. It receives runoff from residential drainage channels, that affects the trophic states of the waters and the phytoplankton that live in it. This study aims to analyze the diversity of phytoplankton communities temporally related to trophic states in these waters. Sampling was carried out monthly for one year on the physical and chemical parameters of the waters and phytoplankton. Furthermore, the analysis of community structure and diversity of, a, b, and g, as well as determining the level of trophic states using the Chlorophyceae index and Cyanophyceae index. During the observation, four classes of phytoplankton were obtained, Chlorophyceae, Bacillariophyceae, Cyanophyceae, and Euglenophyceae which in total consisted of 41 species (g), a1-12 totaling 20-28 species, and b which were relatively small. The value of diversity index (H ') is low, the evenness (E) is moderate, and the dominance (C) is low. The values ​​of the two trophic states indices indicated that the waters were in a eutrophic condition during the observation. In general, it can be concluded that the conditions of the waters were always eutrophic for one year, the diversity of phytoplankton is relatively low and did not show significant changes in species between observations.

Vertical micro-distribution of psammonic ciliates and their relationship to physical and chemical parameters in two lakes of different trophic status

2012 ◽  
Vol 41 (2) ◽  
Author(s):  
Tomasz Mieczan ◽  
Dorota Nawrot
Keyword(s):  
Surface Layer ◽  
Community Structure ◽  
Species Diversity ◽  
Trophic Structure ◽  
Trophic Status ◽  
Chemical Parameters ◽  
Water Parameters ◽  
Physical And Chemical Parameters ◽  
Physical And Chemical ◽  
Chemical Water

AbstractThe aim of this study was to examine the community structure and vertical micro-distribution of psammonic ciliates in two lakes of different trophic status in eastern Poland. Additionally, the size and trophic structure of these microorganisms, and the influence of physical and chemical water parameters on their abundance, were analysed. Psammon samples were collected during spring, summer, and autumn of 2010. In each of the lakes samples were collected in the euarenal, higroarenal, and hydroarenal zones of the psammolittoral. In order to determine the micro-vertical distribution of ciliates, each sample was divided into two sub-samples: the upper part (0–1cm) and the lower part (1–2cm). The species diversity of ciliates decreased with depth. The tendency was particularly clear in mesotrophic lakes. Irrespective of the lake’s trophic type and arenal zones, significantly higher numbers and biomass of ciliates were recorded in the surface layer of the psammolittoral. The upper layer of sand was dominated by omnivorous taxa, whereas the deeper layer showed increases in the proportions of bacterivore species. The factors limiting the occurrence of ciliates are mainly concentrations of total organic carbon and nutrients.

Comparison of the macroinvertebrate communities in streams in logged and undisturbed catchments 8 years after harvesting

1991 ◽  
Vol 42 (6) ◽  
pp. 689 ◽  
Author(s):  
IO Growns ◽  
JA Davis
Keyword(s):  
Organic Matter ◽  
Community Structure ◽  
Environmental Gradients ◽  
Buffer Zone ◽  
Macroinvertebrate Communities ◽  
Chemical Parameters ◽  
Fine Particulate ◽  
Physical And Chemical Parameters ◽  
Hybrid Multidimensional Scaling ◽  
Physical And Chemical

Changes in lotic macroinvertebrate communities 8 years after logging were examined in two sets of paired catchments (Sutton and Lewin) in south-western Western Australia by using analysis of variance, classification (TWINSPAN), and ordination (semi-strong hybrid multidimensional scaling). Both paired catchments contained an undisturbed stream and a stream where clearfelling had been taken to the stream edges. The Sutton catchment also contained a stream where clearfelling had occurred but a 100 m-wide strip of vegetation had been retained as a buffer zone. Differences in richness and abundance of animals between the undisturbed and clearfelled streams in the two catchments were obscured by differences between the sites within each stream. However, ordination of the samples revealed differences in the composition of the macroinvertebrate communities between the clearfelled and undisturbed streams in both catchments. Underlying environmental gradients that separated the invertebrate communities in the clearfelled streams from those in the undisturbed streams, in ordination space, were conductivity, the amount of coarse and fine particulate organic matter, and a reduction in total nitrogen. In all, 11 macroinvertebrate taxa were found to be associated with the separation of samples from the undisturbed and clearfelled streams, this response probably being due to increases in conductivity within the clearfelled streams. Macroinvertebrate community structure in the buffered stream was different from that in the undisturbed stream but was more similar to the latter than to that in the clearfelled stream. Physical and chemical parameters of the buffered stream were also more similar to those of the undisturbed stream. These results indicated that the 100 m-wide buffer zone appeared to be effective in ameliorating any disturbance due to clearfelling.

The influence of gelatin and starter culture on the physical and chemical parameters of cheeses with different fat content

2018 ◽  
Vol 6 (10) ◽  
pp. 123-130
Author(s):  
Yaroslava Zhukova ◽  
◽  
Pylyp Petrov ◽  
Olena Boloba ◽  
Tetiana Ohrimenko ◽  
...  
Keyword(s):  
Starter Culture ◽  
Fat Content ◽  
Chemical Parameters ◽  
Physical And Chemical Parameters ◽  
Physical And Chemical
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