scholarly journals Evaluating Primary Productivity Based on Chlorophyll-a in Ciburuy Lake, West Java Indonesia

2021 ◽  
pp. 1-8
Author(s):  
Regy Pratama Rusdiansyah ◽  
. Zahidah ◽  
Dedi Supriadi ◽  
Herman Hamdani
Keyword(s):  
Chlorophyll A ◽  
Primary Productivity ◽  
Management Plan ◽  
Lake Area ◽  
West Java ◽  
Chlorophyll A Concentration ◽  
Natural Lakes ◽  
Ph Range ◽  
The One ◽  
Depth Water

Ciburuy Lake is the one of many natural lakes in Padalarang, West Java. Padalarang is industries area and pruduce huge waste water to contamination Ciburuy Lake. Ciburuy Lake area has many functions such as tourism, settlement, agriculture and industry. This study aim to evaluate velue of primary productivity based on chlrophyill-a. Chlorophyll-a is one of the indicator to creat management plan of water resources in Ciburuy Lake. This research was conducted from January to March 2021. Sampling carried out in 4 station with deferent water situation. This research used chlorophyll-a concentration measurment method to determine primary productivity. Result obtained in terms of water quality are: temperature  range of 24 - 28 oC; depth water range of 151,83 – 190,83 cm; Transparation range of 22,83 – 27,67 cm; pH range of 5,94 – 8,00; CO2 range of 6,98 – 33,52 mg/L; BOD range of 7,84 – 12,14 mg/L; nitrate range of 0,235 – 0,312 mg/L; fosfate range of 0,142 --0,156 mg/L, and chlorophyll-a concentration range of 0.024 - 0.065 mg/L . This research showed that Ciburuy Lake has water condition eutrophic to hypertrophic because primary productivity in Ciburuy Lake has middle to high condition based on chlorophyll-a concentration.

Importance of Epilwimnion Phosphorus Loading and Wind-Induced Flow for Phytoplankton Growth in Ěímov Reservoir

1993 ◽  
Vol 28 (6) ◽  
pp. 5-14 ◽  
Author(s):  
J. Hejzlar ◽  
M. Balejová ◽  
D. Kafková ◽  
M. Růžička
Keyword(s):  
Chlorophyll A ◽  
Phosphorus Loading ◽  
Density Currents ◽  
Chlorophyll A Concentration ◽  
Dynamical Simulation ◽  
Variable Surface ◽  
Surface Discharges ◽  
Induced Flow ◽  
The One ◽  
Wind Induced Flow

Total reservoir phosphorus loading and epilimnion phosphorus loading were estimated and their relations to phytoplankton quantity examined for spring-summer periods during 1984-1991 in Ěímov Reservoir, a stratified, moderately eutrophic reservoir with variable surface and deep outlets operation. Epilimnion phosphorus loading was quantified from the volumes of water entering the epilimnion due to the inflow temperature-density currents and due to the surface discharges that were determined by the one-dimensional dynamical simulation model of reservoir hydrodynamics DYRESM 5. The fraction of total phosphorus input into the reservoir entering the epilimnion varied between 12 and 31% in different years. Chlorophyll a concentration measured near the dam correlated only with the epilimnion phosphorus loading due to surface discharges. The phosphorus input by river water entering directly the epilimnion caused an increase of the chlorophyll a concentration at the dam only occasionally if the wind was of sufficient velocity and favourable direction to induce mixing and transport of epilimnion water masses from the headwater part of the reservoir to the dam.

scholarly journals ESTIMASI PRODUKTIVITAS PRIMER PERAIRAN BERDASARKAN KONSENTRASI KLOROFIL-A YANG DIEKSTRAK DARI CITRA SATELIT LANDSAT-8 DI PERAIRAN KEPULAUAN KARIMUN JAWA

2017 ◽  
Vol 14 (1) ◽  
Author(s):  
Mulkan Nuzapril ◽  
Setyo Budi Susilo ◽  
James Parlindungan Panjaitan
Keyword(s):  
Chlorophyll A ◽  
Attenuation Coefficient ◽  
Primary Productivity ◽  
Chlorophyll Concentration ◽  
Euphotic Zone ◽  
Landsat 8 ◽  
Secchi Disk ◽  
Estimation Model ◽  
Chlorophyll A Concentration ◽  
Average Value

Sea primary productivity is an important factor in monitoring the quality of sea waters due to his role in the carbon cycle and the food chain for heterotrophic organisms. Estimation of sea primary productivity may be suspected through the values of chlorophyll-a concentration, but surface chlorophyll-a concentration was only able to explain 30% of the primary productivity of the sea. This research aims to build primary productivity estimation model based on chlorophyll-a concentration value of a surface layer of depth until depth compensation. Primary productivity model of relationships with chlorophyll concentration were extracted from Landsat-8 imagery then it could be used to calculated of sea primary productivity. The determination of the depth classification were done by measuring the attenuation coefficient values using the luxmeter underwater datalogger 2000 and secchi disk. The attenuation coefficient values by the luxmeter underwater, ranges between of 0.13-0.21 m-1 and secchi disk ranged, of 0.12 – 0.21 m-1. The penetration of light that through into the water column where  primary productivity is still in progress or where the depth of compensation ranged from 28.75 – 30.67 m. The simple linier regression model between average value of chlorophyll- concentration in all euphotic zone with sea primary productivity has high correlation, it greater than of surface chlorophyll-a concentration (R2 = 0.65). Model validation of sea primary productivity has high accuracy with the RMSD value of 0.09 and satellite-derived sea primary productivity were not significantly different. The satellite derived of chlorophyll-a could be calculated into sea primary productivity.Abstrak Produktivitas primer perairan merupakan faktor penting dalam pemantauan kualitas perairan laut karena berperan dalam siklus karbon dan rantai makanan bagi organisme heterotrof. Estimasi produktivitas primer perairan dapat diduga melalui nilai konsentrasi klorofil-a, namun konsentrasi klorofil-a permukaan laut hanya mampu menjelaskan 30% produktivitas primer laut. Penelitian ini bertujuan untuk membangun model estimasi produktivitas primer berdasarkan nilai konsentrasi klorofil-a dari lapisan kedalaman permukaan sampai kedalaman kompensasi. Model hubungan produktivitas primer dengan konsentrasi klorofil-a yang diekstrak dari citra satelit Landsat-8 kemudian dapat digunakan untuk mengestimasi produktivitas primer satelit. Penentuan klasifikasi kedalaman dilakukan dengan mengukur nilai koefisien atenuasi menggunakan luxmeter underwater datalogger 2000  dan secchi disk. Nilai koefisien atenuasi dengan menggunakan luxmeter underwater berkisar antara 0,13 -0,21m-1 dan secchi disk berkisar antara 0,12 – 0,21 m-1. Penetrasi cahaya yang masuk ke kolom perairan dimana produksi primer masih berlangsung atau kedalaman kompensasi berkisar antara 28,75 – 30,67 m. Model regresi linier sederhana antara konsentrasi klorofil-a rata-rata seluruh zona eufotik dengan produktivitas primer perairan memiliki korelasi yang lebih tinggi dibandingkan konsentrasi klorofil-a permukaan dengan R2= 0,65. Validasi model produktivitas primer memiliki keakuratan yang tinggi dengan RMSD sebesar 0,09 dan produktivitas primer satelit secara signifikan tidak berbeda nyata dengan produktivitas primer data insitu. Sehingga  nilai konsentrasi klorofil-a satelit dapat ditransformasi menjadi produktivitas primer satelit.

scholarly journals ESTIMATION OF SEASONAL VERTICALLY INTEGRATED PRIMARY PRODUCTIVITY IN AMBON BAY USING THE DEPTH-RESOLVED, TIME-INTEGRATED PRODUCTION MODEL

2015 ◽  
Vol 37 (1) ◽  
pp. 47-56 ◽  
Author(s):  
Abdul Basit
Keyword(s):  
Chlorophyll A ◽  
Primary Productivity ◽  
Monitoring Program ◽  
Production Model ◽  
Distribution Model ◽  
Integrated Production ◽  
Chlorophyll A Concentration ◽  
Run Off ◽  
The Difference

Seasonal vertically integrated primary productivity (IPP) in eight stations of Inner Ambon Bay (IAB) and ninestations of Outer Ambon Bay (OAB) was estimated using the depth-resolved, time-integrated production model andvertical-a distribution model which was mainly dependent on chlorophyll-a profile. The profile was modeled as Gaussfunction in which its parameters were determined by minimizing the difference between the model and the averageof in situ chlorophyll-a concentration from 2008 to 2012. The data was collected by UPT BKBL-LIPI Ambonduring monitoring program in Ambon Bay. Based on this model, the results showed that the primary productivityduring the southeast monsoon was to some degree higher than that of other seasons. The main factors causing the higherIPP in this season were upwelling phenomenon and high rainfall intensity. From the results, it could be concludedthat run-off gave more impacts in IAB than in OAB while upwelling in Banda Sea affected the IPP more in OABthan that in IAB. Then, the existence of the sill located between IAB and OAB inhibited the mixing of IAB andOAB waters so that the levels of IPP and chlorophyll-a concentration in IAB were higher than that of in the OAB.

scholarly journals Relative influence of direct and indirect environmental effects on sestonic chlorophyll-a concentration in Cerrado streams

2015 ◽  
Vol 27 (3) ◽  
pp. 301-310 ◽  
Author(s):  
Pedro Paulino Borges ◽  
Fabrício Barreto Teresa ◽  
Patrick Thomaz de Aquino Martins ◽  
João Carlos Nabout
Keyword(s):  
Chlorophyll A ◽  
Primary Productivity ◽  
Indirect Effects ◽  
Important Variable ◽  
Native Vegetation ◽  
Aquatic Environments ◽  
Relative Importance ◽  
Direct And Indirect Effects ◽  
Chlorophyll A Concentration ◽  
Land Use And Cover

Abstract Aim: Chlorophyll-a may be directly influenced by local variables and/or indirectly by land use and cover, once landscape modifications change limnological variables, which in turn affect the primary productivity of aquatic environments, e.g., streams. Therefore, the objective of this study was to determine the relative importance of the local and landscape environmental components and assess the direct and indirect effects of these variables on sestonic chlorophyll-a concentration in 30 Cerrado streams (Santa Teresa River basin). Results All aquatic environments were oligotrophic during the study period. Only the local variables were important to explain chlorophyll-a variation (R2 = 0.27; P = 0.04). In addition, the path analysis showed that all variables used in the analysis influenced chlorophyll-a concentration more directly than indirectly. Conductivity was the most important variable to directly influence chlorophyll-a, followed by turbidity. Conclusion The large amount of remnant native vegetation in the basin indicates that the region studied is well preserved, which may explain the greater importance of local variables and the low effect of the landscape in explaining chlorophyll-a variation.

scholarly journals HUBUNGAN ANTARA KANDUNGAN KLOROFIL-a DENGAN HASIL TANGKAPAN TONGKOL DI DAERAH PENANGKAPAN IKAN PERAIRAN PELABUHANRATU

2017 ◽  
Vol 15 (4) ◽  
pp. 297
Author(s):  
Domu Simbolon ◽  
Harry Satriyanson Girsang
Keyword(s):  
Chlorophyll A ◽  
Fishing Ground ◽  
West Java ◽  
Chlorophyll A Concentration ◽  
Euthynnus Affinis

Perarran Pelabuhanratu merupakan pusat penangkapan ikan yang polensial da Jawa Barat. Salah satu produk perikanan yang memilik; nilai ekonomis penting yang terdapat di perairan tersebut adalah ikan longkol (Euthynnus affirls). Kandungan klorofil-a memegang peranan penting sebagai produser primer dalam ekosistem laut dan menjadi suatu indikator dalam pendugaan daerah penangkapan ikan. Tujuan penelitian ini adalah untuk menentukan hubungan antara kandungan klorofil-a dengan hasil tangkapan ikan tongkol, dan mengevaluasi daerah penangkapan tongkol di perairan Pelabuhanratu dalam periode bulan Maret-Mei 2007. Metode yang digunakan dalam penelitian ini adalah metode survei. Kandungan klorofil-a bulan Maret-Mei 2007 berkisar antara 0,240-0,600 mg m-3, dengan rata-rata 0,375 mg mn. Jumlah tangkapan ikan tongkol bulan Maret 2OO7 mencapai 15.345 kg dengan produktivitas 272,27 kgl setting, butan April 2007 meningkat sampai mencapai 62.638 kg dengan produktivitas 701,04 kglsetting. Selanjutnya pada butan Mei 2007, jumlah ikan tongkol yang tertangkap hanya 8.258 kg, tetapi produktivitasnya lebih tinggi dibandingkan bulan Maret, yaitu 401,55 kglseff/ng. Komposisi tangkapan ikan tongkoi ukuran kecil pada butan Maret-Mei 2007 mencapai 73oA da ri lotal tangkapan payang 82,641 kg. Klorofil-a berpengaruh terhadap tangkapan ikan longkolsetelah 30 haridi perairan Pelabuhanratu. Dalam periode bulan Maret-April 2007, daerahpenangkapan ikan tongkol paling potensial di perairan PelabuhanraiLr terdapat pada bulan April dibandingkan dengan bulan maret dan mei 2007. Pelabuhanratu waters is the central of potential fishing activities in West Java. One of its fisheries products which has an impoftant economical value is frigate mackeret (Euthynnus affinis). Chlorophy - a hold an impoftant role as the pimary prodLtcer in sea ecosystem and become one of indicator jn fishing grcund forecasting. The purposes of this study are to detennine the correlation between chlorophyll-a concentralion and figate mackerel catches, and to evaiuate fishing ground of frigate mackerel in Pelabuhanraiu waters on March-May 2007. The methoci used in lhis research was survey method.ChlorophylLa profile in March-May 2007 ranged from 0,240 0,600 mg m 3, wi l 0,375 mg m 3 in average. The amount of frigate mackerel catches in March rcached 15 345 kg with 272,27 kg/ setting in productivity value, in Apii, the catches increased to 62.638 kg with ptoductivity about 701 .Aq kg/setting. ln May 2007. the amount of frigate mackerel catches was rcnained I258 kg. but the productivity was higher compared to productivity in March (401,55 kg/setting in CpLjE s vatLle). The composition of small frigate mackerel caught by boat seine net (payang) on March-May 2OO7 reached about 73% from 82.641 kg in totals. Chlorophyll-a concentration influenced significanlty on frigate mackerel catches after 30 days in Pelabuhanratu waters. On the period of March-May 2007, the most potential fishing ground in Pelabuhanratu waters was found in April 2007 compared to March and May 2007.

scholarly journals Primary Productivity of Jatigede Reservoirs in Sumedang, West Java

2020 ◽  
pp. 20-27
Author(s):  
Muthi’ah Atsari Hamiedah ◽  
Zahidah . ◽  
Heti Herawati ◽  
Isni Nurruhwati
Keyword(s):  
Carbon Dioxide ◽  
Power Generation ◽  
Chlorophyll A ◽  
Primary Productivity ◽  
Measurement Method ◽  
Quality Parameters ◽  
Raw Water ◽  
West Java ◽  
Water Power ◽  
Oligotrophic Water

Jatigede Reservoir is a reservoir located in Sumedang West Java which is built for irrigation, raw water, power generation, tourism, and capture fisheries. This research aims to determine the value of primary productivity as one of the indicators of the water body feasibility of the Jatigede reservoir to capture fisheries activities. The study was conducted in August – September 2019. Sampling is carried out at 4 stations on the surface, half the depth of compensation, and the depth of compensation. Estimation of primary productivity using chlorophyll-a concentration measurement method. The results of measurement of water quality parameters in the Jatigede reservoir include transparency range of 19,5 cm – 116,5 cm, temperature with a spread of 26,58 – 27,48oC, pH with a range of 7,69 – 8,40, carbon dioxide with a range of 4,190 mg/L – 9,219 mg/L, current ranges from 0.136 m/s – 0,216 m/s, BOD5 with a range of 11,027 dissolved oxygen ranges from 6,4 mg/L – 7,1 mg/L, ammonia ranges from 0,006 mg/L – 0,039 mg/L, nitrates ranged from 0,168 mg/L – 0,216 mg/L, and phosphate range 0,139 mg/L – 0,185 mg/L. Results from the measurement of chlorophyll-a ranged from 0,035 mg/L – 0,062 mg/L. This results in showing the Jatigede reservoir of oligotrophic water because the primary productivity in the waters of the Jatigede Reservoir is relatively low if calculated based on the concentration of chlorophyll-a.

Etude sur la teneur en pigment de frênes qui croissent dans des conditions différentes

1973 ◽  
Vol 37 ◽  
Author(s):  
N. Lust
Keyword(s):  
Chlorophyll A ◽  
Strong Influence ◽  
The Other ◽  
Pigment Content ◽  
Chlorophyll B ◽  
Light Quantity ◽  
Yellow Pigments ◽  
The One ◽  
Green Pigments

Pigment content of ashes grown up under different circumstances - The pigment content (chlorophyll a, chlorophyll b,  xanthophyll and carotene) has been researched with ashes grown up under  different light circumstances and varying in age and height.     The results prove that the general laws concerning the influence of light  on the pigment content, don’t always work.     The phenomen is very complex. The light quantity is very important in some  cases, but insignificant in others. It seems origin and height of plants have  a strong influence. The results prove also the influence of the environment  is much higher on small plants as on big ones.     The research indicates finally the correlation between the green pigments,  the yellow pigments, and between the green pigments on the one side and the  yellow ones on the other side.

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