scholarly journals Plankton Community Structure as Bioindicator Trophic Status of Jatigede Reservoir Waters

2020 ◽  
Vol 7 (1) ◽  
pp. 29-40
Author(s):  
Rosadi Rosadi ◽  
Muhammad Musa ◽  
Tri Djoko Lelono
Keyword(s):  
Community Structure ◽  
Trophic Status ◽  
River Flow ◽  
Diversity Index ◽  
Water Source ◽  
Plankton Community ◽  
Zooplankton Abundance ◽  
Phytoplankton Diversity ◽  
Evenness Index ◽  
Plankton Community Structure

Jatigede Reservoir in Sumedang Regency is a land mass planning designed as a multi-function reservoir. The main water source for this reservoir is from Cimanuk River, which flows through Garut Regency, and has many industrial activities around the river flow. This research was conducted to assess the trophic status of water pollution in Jatigede Reservoir by utilizing plankton as a bioindicator agent. Samples were collected from 9 observation stations from November 2018 until January 2019. The results showed that 26 species of phytoplankton from 7 divisions including Dinophyta, Cyanophyta, Chlorophyta, Chrysophyta, Euglenophyta, Bacillariophyta, and Charophyta was found in Jatigede Reservoir at about 461 ind/m3. Zooplankton abundance of 6 species from 2 divisions of Rotifera and Copepoda at 2 ind/m3. The average phytoplankton diversity index was 0.93 and zooplankton diversity index was 0.23. The average phytoplankton evenness index was 0.44 and zooplankton evenness index was 0.24. The average dominance of phytoplankton was 0.58 and dominance of zooplankton was 0.25. Based on the plankton community structure, the trophic status of Jatigede Reservoir was classified to moderate polluted (eutroph) to heavily pollutants (hypereutroph). The dominant species was Perinidium sp from Dinophyta division.

scholarly journals Plankton Community Structure and Its Relationship with Minerals Profiles in Minapadi Area, Talagasari Village, Kadungora Garut Regency

2019 ◽  
pp. 1-13
Author(s):  
Mohammad Farid Najibul Wafa ◽  
Zahidah Hasan ◽  
Iwang Gumilar ◽  
Asep Sahidin
Keyword(s):  
Water Quality ◽  
Community Structure ◽  
Normal Condition ◽  
Diversity Index ◽  
Aquatic Organisms ◽  
Quality Parameters ◽  
Plankton Community ◽  
Phytoplankton Diversity ◽  
Quality Of Water ◽  
Plankton Community Structure

Minapadi is an integration of rice cultivation with fish breeding in one location. This research was conducted in the village of Talagasari, District Garut Kadungora because this area is thought to have nutrient elements in the form of specific micro and macro minerals that are good for agriculture and fisheries. Planktons are microscopic organisms that form an important link in the life of aquatic organisms. This research aimeds to analyze the quality of water, mineral composition and its effects on plankton community structure in minapadi. The research method used was purposive sampling. Plankton relationship with water quality and dissolved minerals were analyzed using a Canonical Correspondence Analysis (CCA). Sampling was done 6 times in the period May 20 - July 25, 2018. Research shows that there are 31 orders of plankton consisting of 26 orders of phytoplankton and 5 order of zooplankton. Phytoplankton diversity index and dominance over their respective research ranged from 0,5149 to 0,8797 and 0,1203 to 0,4851, while for zooplankton from 0 to 0,8 and from 0,2 to 0,1. The water quality parameters measured primarily by temperature, DO, pH, nitrates, phosphates, ammonia qualify recommended PP 82 2001, third class. There is a concentration of dissolved minerals that exceeds the normal condition nitrates, phosphates, ammonia qualify recommended PP 82 2001, third class. There is a concentration of dissolved mineral exceeds the normal condition K, S, Si, Ca, Fe, Mn, Cu, and Cl, which led to the dominance of the phylum Euglenophyta, Bacillariophyta, and arthropods.

scholarly journals Kualitas Air dan Struktur Komunitas Plankton di Perairan Pantai Lovina Kabupaten Buleleng Provinsi Bali

2018 ◽  
Vol 5 (1) ◽  
pp. 109
Author(s):  
Irene Yolanda Br Ginting ◽  
I Wayan Restu ◽  
Dewa Ayu Angga Pebriani
Keyword(s):  
Dissolved Oxygen ◽  
Diversity Index ◽  
Plankton Community ◽  
Zooplankton Abundance ◽  
Marine Biota ◽  
Dominance Index ◽  
Phytoplankton Diversity ◽  
Average Value ◽  
Observation Method ◽  
Index Value

Lovina Beach is one of the beaches visited by many foreign and domestic tourists. Lovina Beach has a tourism spot and a vast area of marine biota cultivation. Life of biota in the waters of Lovina Beach is affected by conditions of beach waters. The research purpose was to know the correlation between waters quality and plankton in Lovina Beach by using observation method. The research was done on February until March 2017. Species of fitoplankton species from all three stations was dominated by Lyngbya sp. with abundance of 78 ind/l. The average value of the phytoplankton diversity index found was 1.7706. The average value of phytoplankton uniformity index is 0.9882 while the value of phytoplankton dominance index is 0.1737. The average value of the zooplankton diversity index found is 1.7311. The average value of the zooplankton uniformity index is 0.8896 while the zooplankton dominance index value is 0.2125. The result of the measurement of water quality is temperature parameter in Lovina Beach ranged from 27.6 - 28.9 0C, brightness ranged between 4.7 - 6 m, salinity of 25.3 - 27 ppt, DO (Dissolved Oxygen) ranged between 4 - 4 , 7 Mg / L, the pH ranged from 8.5 to 8.6, the nitrate ranged from 0.0081-00087 Mg/L and the phosphate ranged from 0.016 to 0.027 Mg / L. So, it can be concluded that the waters of Lovina Beach has the highest abundance of plankton that is the type of zooplankton, the level of plankton community structure in Lovina Beach waters is moderate.ppt, DO (Dissolved Oxygen) 4 – 4,3 Mg/l, pH 8,5 – 8,6, nitrate 0,0081 – 0,0087 Mg/l and phosphate 0,016 – 0,027 Mg/L. The structure of plankton community in Lovina coastal according of phytoplankton abundance categorized in oligotropic, while according of zooplankton abundance categorized in moderate (mesotropic).

scholarly journals The Influence of Plankton Community Structure on Sinking Velocity and Remineralization Rate of Marine Aggregates

2019 ◽  
Vol 33 (8) ◽  
pp. 971-994 ◽  
Author(s):  
L. T. Bach ◽  
P. Stange ◽  
J. Taucher ◽  
E. P. Achterberg ◽  
M. Algueró‐Muñiz ◽  
...  
Keyword(s):  
Community Structure ◽  
Plankton Community ◽  
Marine Aggregates ◽  
Plankton Community Structure ◽  
Sinking Velocity

scholarly journals THE ANALYSIS OF OIL CONTENT IN SEDIMENT AND COMMUNITY STRUCTURE OF MACROZOOBENTHOS IN BELAWAN WATERS OF MEDAN CITY, NORTH SUMATERA PROVINCE

2020 ◽  
Vol 3 (2) ◽  
pp. 167-178
Author(s):  
Doli Juna Setia Tanjung ◽  
Bintal Amin ◽  
Syafruddin Nasution
Keyword(s):  
Community Structure ◽  
Linear Regression ◽  
Oil Content ◽  
Diversity Index ◽  
The Other ◽  
Regression Analyses ◽  
Simple Linear Regression ◽  
Dominance Index ◽  
Ocypode Quadrata ◽  
Evenness Index

This research was conducted in March 2019 to determine the oil content in sediment, it’s community structure of macrozoobenthos and it’s a relationship in Belawan Waters of Medan City, North Sumatera. Four sampling stations with five replications in each station were surveyed. The results showed that the average oil content in sediments exceeded the threshold had set by the National Academy of Science. Macrozoobenthos found consists of Ocypode quadrata, Scyla serrate, Rotun dicauda, Penaeus sp, Murex tribulus, and Nassarius olivaccus. The highest abundance was in Station 3 and the lowest was in Station 2. The diversity index in each station was generally very low. Dominance Index in Station 4 was medium, whilst the other stations were high. Evenness index showed in Station 3 and 4 were in high population, Station 1 was in medium population and Station 2 was in low population. Simple linear regression analyses between oil content in sediment with community structure of macrozoobenthos indicated negative correlation ( Y = 10,5-0,0001x , R2 = 0,0004 and r = 0,02 ) which indicated that the higher the oil content, the lower the macrozoobenthos abundance in sediment.

scholarly journals Characteristics of Benthos communities in Laoting area of Hebei Province

2020 ◽  
Vol 206 ◽  
pp. 02024
Author(s):  
Li Guanglou ◽  
Cao Hongmei ◽  
Ye wei
Keyword(s):  
Community Structure ◽  
Benthic Community ◽  
Dominant Species ◽  
Diversity Index ◽  
Hebei Province ◽  
Benthic Community Structure ◽  
Number Of Species ◽  
Evenness Index ◽  
Sea Area ◽  
Richness Index

According to a survey of benthos in the Laoting sea area of Hebei Province on May 24th 2019, a total of 40 benthos species were obtained, of which mollusks have the largest number, followed by annelids and arthropods. The dominant species are Sternaspis sculata and Ringicula doliaris. The number of species obtained in this survey is much lower than the historical average. The diversity index is significantly lower than that in the April 2008 survey, and the evenness index and richness index have declined slightly, indicating that the benthic community structure in this sea area tends to be simplistic, stability tends to deteriorate.

scholarly journals COMMUNITY STRUCTURE ECHINODERMS (ASTEROIDEA, OPHIUROIDEA, ECHINOIDEA AND HOLOTHUROIDEA) IN THE MARINE NATIONAL PARK EAST SULAWESI WAKATOBI

2016 ◽  
Vol 8 (1) ◽  
pp. 357-366 ◽  
Author(s):  
Eddy Yusron
Keyword(s):  
Species Richness ◽  
Community Structure ◽  
National Parks ◽  
National Park ◽  
Diversity Index ◽  
Dead Coral ◽  
Evenness Index ◽  
Different Types ◽  
High Level ◽  
Richness Index

A study on Echinoderms community structure in marine national parks of Wakatobi, Southeast Sulawesi was conducted in six locations, i.e., Waha Beach, Coastal Sombo, Beach Houses, Beach Kapota, Banakawa beach, and Umala beach in October 2013. All of the six parks were located the Wakatobi territorial waters with coordinates of 5°06'25" S and 123°124'10 E. The results showed of 18 species of echinoderms representing six different types of Asteroidea, two types of Ophiuroidea, six types of Echinoidea, and four types of Holothuroidea. Group of starfish or Asteroidea was the most prominent on seagrass area. Based on the six transects sites, it turned out that the group of starfish (Asteridea) occupied a relatively high level of species richness. From the quantitative analysis values, we obtained diversity index (H) of 1.105 in Sombu, the highest evenness index (J) of 0.989 was found in Umala, and the highest species richness index values (D) of 0.132 was obtained in kapota. It seemed that all echinoderm groups were generally like seagrass microhabitat (12 types). While, sand and dead coral habitats were only occupied by 8 (eight) echinoderm groups. Keywords: echinoderms, diversity, Wakatobi, Southeast Sulawesi

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