scholarly journals PRODUKTIVITAS PRIMER PERAIRAN DANAU SIBILI KECAMATAN TAWAELI, KOTA PALU, SULAWESI TENGAH

Biocelebes ◽  
2020 ◽  
Vol 14 (3) ◽  
pp. 244-252
Author(s):  
Agus salim Al-Bandjari ◽  
Asri Pirade Paserang
Keyword(s):  
Primary Productivity ◽  
Photosynthetic Activity ◽  
Net Photosynthesis ◽  
Chemical Parameters ◽  
Average Temperature ◽  
A Value ◽  
Physical And Chemical Parameters ◽  
Lower Temperature ◽  
Physical And Chemical ◽  
Central Sulawesi

The research "Primary Productivity of Lake Sibili of Tawaeli District, Palu City, Central Sulawesi" was carried out from January to February 2019. This study aims to determine the primary productivity of waters and the physical and chemical parameters of Lake Sibili and as a first step in the use of Lake Sibili sustainable. This study was carried out using the method of oxygen light bottles and dark bottles. The results of the research have shown that station III has the highest net photosynthesis with a value of 1.875.0 mgC/m3/day (Table 2) this is caused by the temperature and pH of the station is relatively high which has an average temperature of 30.3 oC and average pH - 7.6 so that this can increase the rate of photosynthetic activity by phytoplankton while the lowest net photosynthetic value is at station I with a value of 812.4 mgC/m3/day which has a relatively lower temperature and pH compared to other stations which have an average temperature average of 28.9 oC and average pH 7. so that based on primary productivity values obtained during the study, the waters of the lake Sibili can be categorized as Eutrophic waters.

scholarly journals Analisis Kesesuaian Perairan untuk Keramba Jaring Apung di Kecamatan Sirah Pulau Padang Kabupaten Ogan Komering Ilir Provinsi Sumatera Selatan

2019 ◽  
Vol 8 (1) ◽  
pp. 20-30
Author(s):  
Rangga Bayu Kusuma Haris ◽  
Indah Anggraini Yusanti
Keyword(s):  
Water Quality ◽  
Current Velocity ◽  
Quality Parameters ◽  
Chemical Parameters ◽  
Chemical Laboratory ◽  
M Current ◽  
Bottom Substrate ◽  
A Value ◽  
Physical And Chemical Parameters ◽  
Physical And Chemical

Haris et al, 2019. The Analysis of Water Suitability for Floating Net Sprouts in Sirah Pulau Padang, Ogan Komering Ilir District, South Sumatra Province. JLSO 8(1):20-30.The purpose of this study is to analyze the level of water suitability of the floating net sprouts in sirah pulau padang, ogan komering river, Serdang Menang Village, OKI South Sumatra Regency based on water physical and chemical parameters. This study was conducted on July - August 2018 at the Komering River, Ulak Jermun village, Terusan Menang Village, and Mangun Jaya Village, OKI District, South Sumatra. The data of sampling was divided into 3 stations, they were; station 1 was Ulak Jermun Village (3 ° 18'45.48 "LS and 104 ° 53'5.32" BT), station 2 was Terusan Menang Village (3 ° 17'14.13 "LS and 104 ° 52'46.78 "BT), and station 3 was Mangun Jaya village (3 ° 18'14.92" LS and 104 ° 52'59.48 "BT). The data of Samples were tested at the chemical laboratory in Palembang Public Water Fisheries and Extension Research Institute directly. The results of the study was for Station 1, Station 2, and Station 3 with a value was  48% with a good feasibility information. The results of measurements of water quality parameters, the pH was about 6.6 - 6.7, temperature was about from 24., 53 - 26.93oC, DO 3.93 - 4.36 mg / l, ammonia was about 0.78 - 0.16 mg / l, water brightness was about from 34.67 - 43.33 cm, CO2 4.53 - 5.03 mg / l, depth 2.36 - 2.47 m, current velocity was about 0.38 - 0.44 m / s, nitrate was about 0.37 - 0.439 mg / l, phosphate was about 0.009 - 0.225 mg / l and the bottom substrate of water was mud.

scholarly journals Produktivitas Primer Perairan Kolong Bekas Tambang Bauksit di Kota Tanjungpinang, Kepulauan Riau

2019 ◽  
Vol 4 (2) ◽  
pp. 113
Author(s):  
Tri Apriadi ◽  
Risandi Dwirama Putra ◽  
Fadhliyah Idris
Keyword(s):  
Primary Productivity ◽  
Net Primary Productivity ◽  
Chemical Parameters ◽  
Good Opportunity ◽  
Bauxite Mining ◽  
Ecological Index ◽  
Freshwater Aquaculture ◽  
Phytoplankton Communities ◽  
Physical And Chemical Parameters ◽  
Physical And Chemical

<strong>Primary Productivity on Abandoned Bauxite Mining Pits of Tanjungpinang City, Riau Islands.</strong> The abandoned bauxite mining pits in Bintan Island have a good opportunity to be developed, especially as an aquaculture area. The objective of this study was to determine the primary productivity of the waters, phytoplankton ecological index, and physical and chemical parameters of the bauxite post-mining ponds in Tanjungpinang City, Riau Islands. The study was conducted in April-August 2018 in two bauxite post-mining ponds (station 1 and 2) in Senggarang, Tanjungpinang City. The parameters observed were the abundance and ecological index of phytoplankton, aquatic primary productivity, physical and chemical parameters of the waters, and nutrients, N and P. From the study it was found that there were three phytoplankton divisions, consisted of three classes and eight genera. Mougeotia sp. was the dominant species of phytoplankton. The abandoned bauxite mining pits were classified as labile and the phytoplankton communities were under environmental stress due to the dominance of certain species. The abandoned bauxite mining pits were classified as young (inundation &lt;5 years), low primary productivity, as well as oligotrophic waters. Net primary productivity in station 2 was higher than station 1, i.e. 1,23 mgC L-1 day-1 and 0,25 mgC L-1 day-1, respectively. The physical and chemical parameters of the bauxite post-mining ponds studied met the quality standards for freshwater aquaculture activities, except for pH and ammonia.

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

scholarly journals The first report of ants (Formicidae: Hymenoptera) in salt marshes and salt pans in central parts of Iran

2019 ◽  
Vol 20 (9) ◽  
Author(s):  
MOHAMMAD REZA MOHSENI ◽  
SHAHROKH PASHAEI RAD
Keyword(s):  
Salt Marshes ◽  
Dominant Species ◽  
Salt Lake ◽  
Vegetation Density ◽  
Chemical Parameters ◽  
Salt Pans ◽  
Mountain Station ◽  
Physical And Chemical Parameters ◽  
Physical And Chemical ◽  
First Time

The present study was conducted in Salt marshes and Salt pans in central parts of Iran. 121 specimens of ants were collected by trapping and hand during spring, summer and autumn 2017 to 2019. Nine species belong to two subfamilies of Myrmicinae and Formicinae were identified. The vegetation, physical and chemical parameters of soil such as salinity, Ph, and other factors were investigated. Darband Shoor Mountain station with five species had the highest diversity and vegetation density and the lowest salinity of soil (72.14 ds/m) whereas Salt Lake station had only one species, with no vegetation and the highest salinity of soil (153.15 ds/m). Cataglyphis lividus (André, 1881) was the dominant species in all the stations except in Darband Shoor Mountain station. All the species were reported for the first time from salt marshes and salt pans in the central parts of Iran and were approved by Prof. Brian Taylor, in Royal Entomological Society of London, England.

scholarly journals Bioecology of Manggabai Fish (Glossogobius giuris) in Limboto Lake

2020 ◽  
Vol 4 (2) ◽  
pp. 89
Author(s):  
Dewi Nuryanti Fazrin ◽  
Hasim Hasim ◽  
Juliana Juliana
Keyword(s):  
Fishing Gear ◽  
Residential Areas ◽  
Chemical Parameters ◽  
Fish Traps ◽  
Physical And Chemical Parameters ◽  
Glossogobius Giuris ◽  
Net Cages ◽  
Physical And Chemical ◽  
Traditional Fishing ◽  
The Relationship

The purpose of this study was to determine the relationship between the length and weight of Manggabai fish (Glossogobius giuris) and to know the relationship between the presence of Manggabai fish (Glossogobius giuris) and water quality in Limboto Lake. This research was conducted in February 2019, located in the waters of Lake Limboto, Gorontalo Province. The method used in determining the location of sampling is Purposive Sampling. Fish sampling is determined by considering fishing locations, litoral areas, the presence of residential areas, agricultural and plantation areas, the existence of floating net cages and in the middle of the lake. The study was conducted at 20 observation stations using fish traps in the form of bamboo and used motorcycle tires that have been modified and become traditional fishing gear. The results showed that the physical and chemical parameters in Lake Limboto and showed temperature values ​​ranged from 29.77 to 31.630C, dissolved oxygen levels ranged from 2.1 to 5.48 ppm, pH ranged from 7.09 to 8.94, TDS ranging from 0.251 to 0.369, Nitrite Levels 0.04-0.08 ppm, Nitrate Levels 1.2-4.7 ppm, BOD ranges from 2.5-57 ppm and phosphate levels 0.1-1.14 ppm. The relationship between length and body weight of fish are allometric, where W = 0.8769 L10,023 and constant b (10,023)> 3.

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