Factors Regulating in situ Filtering Rates of Cladocera

1985 ◽  
Vol 42 (3) ◽  
pp. 567-576 ◽  
Author(s):  
Patricia Chow-Fraser ◽  
Roy Knoechel
Keyword(s):  
Regression Analysis ◽  
Carapace Length ◽  
Linear Regression Analysis ◽  
Filtering Rate ◽  
Independent Variable ◽  
Explained Variance ◽  
Main Determinants ◽  
Taxonomic Affiliation ◽  
Filtering Rates

Individual filtering rates of four species of Daphnia, as well as Holopedium, Diaphanosoma, Ceriodaphnia, and Bosmina, were measured in 10 lakes under various field conditions to identify important factors regulating in situ filter-feeding for these cladocerans. Linear regression analysis indicated that carapace length accounted for almost 60% of the total variance in individual filtering rates when data from all 10 lakes were pooled. We suggest that zooplankton in these lakes filter-feed in proportion to their volume, since the functional slope of this regression approximated 3. Taxonomic affiliation had generally little effect on filtering rates. Temperature, ranging from 12 to 22 °C, had no statistically significant effect on filtering rate; there were also no significant differences between rates measured at dawn and dusk compared with midday rates for animals ranging in size between 0.30 and 1.30 mm. Addition of phytoplankton concentration as a second independent variable to the regression relating filtering rate to length further increased explained variance to 64%. Since the two main determinants of in situ filtering rates were zooplankton carapace length and concentration of edible phytoplankton, both of which are independent of taxonomic affiliation, investigators interested in assessing grazing losses should seriously consider measuring zooplankton in terms of size distribution rather than taxonomic affiliation.

Inhibitory effect of Anabaena sp. on in situ filtering rate of Daphnia

1986 ◽  
Vol 64 (9) ◽  
pp. 1831-1834 ◽  
Author(s):  
Patricia Chow-Fraser ◽  
W. Gary Sprules
Keyword(s):  
Lake Water ◽  
Laboratory Experiments ◽  
Carapace Length ◽  
Daphnia Pulex ◽  
Biomass Concentration ◽  
Inhibitory Effect ◽  
Filtering Rate ◽  
Anabaena Sp ◽  
Filtering Rates

We found that in situ filtering rates of Daphnia spp. measured in a lake containing Anabaena were significantly lower than those measured in a filament-free lake. Even after accounting for the depressing effects of high nannoplankton biomass concentration, filtering rates in the lake with Anabaena were 64% lower than those from the filament-free lake. We also found that filtering rates for Daphnia pulex in laboratory experiments were lower when Anabaena was present in experimental beakers than when Chlorella was present. When Anabaena was removed from Three Mile Lake water, filtering rates compared closely with predicted rates based on nannoplankton concentration and carapace length alone. Our analysis indicates that the presence of Anabaena filaments depresses Daphnia grazing rates in general, and that the filaments themselves are ingested at a lower rate than algae such as Chlorella.

C. PENGARUH UTANG LUAR NEGERI DAN EKSPOR TERHADAP PERTUMBUHAN EKONOMI (Studi pada Produk Domestik Bruto Indonesia Periode 2015-2019)

2021 ◽  
Vol 4 (1) ◽  
pp. 22
Author(s):  
Farah Syahri Maulidiyah
Keyword(s):  
Economic Growth ◽  
Time Series ◽  
Regression Analysis ◽  
Linear Regression Analysis ◽  
Foreign Debt ◽  
External Debt ◽  
Multiple Linear Regression Analysis ◽  
Analysis Method ◽  
Indonesian Government ◽  
Independent Variable

ABSTRACT The purpose of this research is to analyze the influence of exports and foreign debt which can affect Indonesia's GDP (Gross Domesty Product). The variables of this research are the foreign debt value of the Indonesian government and the value of Indonesian exports as the independent variable, and the value of Indonesia's GDP as the dependent variable. The data used are supporting data for the 2015-2019 period from the time series (time series) of Bank Indonesia and BPS. The data analysis method used multiple linear regression analysis. The results of this study are the value of the Indonesian government's foreign debt and the value of Indonesia's exports have a significant effect. Meanwhile, the results of the partial test (t-test) show that the value of foreign debt and exports of the Indonesian government greatly affects the value of Indonesia's GDP. Keywords : External Debt, Export, Economic Growth (Menggunakan template jurnal sinta 2 JESP (Jurnal Ekonomi dan Studi Pembangunan) eISSSN : 2502-7115 l pISSN : 2502-7115 Universitas Negeri Malang).

scholarly journals ANALISIS PENGARUH PEMASARAN RELASIONAL TERHADAP KEPUASAN NASABAH DALAM MEMILIH PRODUK PERBANKAN (STUDI KASUS PADA NASABAH PRIORITAS BANK-BANK BUMN DI BANJARMASIN).

2019 ◽  
Vol 6 (1) ◽  
pp. 61
Author(s):  
Kristin Meilisa ◽  
Marijati Sangen
Keyword(s):  
Regression Analysis ◽  
Customer Satisfaction ◽  
Relationship Marketing ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Customer Expectations ◽  
Independent Variable ◽  
Marketing Variables ◽  
Public Banks

<p><em>This study aims to identify and analyze the influence of relationship marketing in the form of understanding customer expectations, building service partnership and trust simultaneously and partially to customer satisfaction on choosing banking products, a case study of priority customers on public Banks in Banjarmasin. The study was conducted by using multiple linear regression analysis to find the influence of the independent variable (X) to the dependent variable (Y), simultaneously and partially. The results showed that simultaneously relationship marketing variables significantly influenced customer. Partially, understanding customer expectations has no significant effects to customer satisfaction. Building service partnership and trust significanly influence customer satisfaction and trust is a dominant variable in achieving customer satisfaction. Public Bank in Banjarmasin should be able to increase trust its customers with all efforts.</em></p>

scholarly journals FAKTOR –FAKTOR YANG MEMPENGARUHI KEPATUHAN PAJAK WAJIB PAJAK ORANG PRIBADI (Studi Pada Wajib Pajak Orang Pribadi yang terdaftar di KPP Kebayoran Baru Tiga)

2014 ◽  
Vol 1 (1) ◽  
pp. 51
Author(s):  
Fibria Anggraini P.L ◽  
Waluyo Waluyo
Keyword(s):  
Regression Analysis ◽  
Organizational Climate ◽  
Survey Design ◽  
Linear Regression Analysis ◽  
Tax Compliance ◽  
Multiple Linear Regression Analysis ◽  
Individual Behavior ◽  
Behavior Motivation ◽  
Independent Variable ◽  
One Year

The purpose of this study was to analyze the factors that affect tax compliance (tax compliance) individual taxpayers in the KPP Kebayoran Baru Tiga, South Jakarta. This study used a questionnaire survey design as an instrument. Respondents in this study were 85 individual taxpayers entrepreneur tax register at least one year and to submit the SPT.This study uses the variable individual behavior, motivation and organizational climate as the independent variable and tax compliance individual taxpayers as the dependent variable. Data analysis was performed using multiple linear regression analysis with SPSS for Windows Version 19.00. The results of this study indicate that individual behavior, motivation and organizational climate have significant effect on tax compliance individual taxpayers .

scholarly journals PENGARUH INFLASI DAN KURS TERHADAP UJRAH DALAM PEMBIAYAAN MUSYARAKAH MUTANAQISAH PADA PT. BANK MUAMALAT INDONESIA, TBK CABANG PEMATANGSIANTAR

2015 ◽  
Vol 1 (1) ◽  
pp. 86
Author(s):  
Nuri Aslami
Keyword(s):  
Regression Analysis ◽  
Exchange Rate ◽  
Linear Regression Analysis ◽  
Field Research ◽  
Secondary Data ◽  
Financial Statements ◽  
Multiple Linear Regression Analysis ◽  
Independent Variables ◽  
Qualitative Approaches ◽  
Independent Variable

<p>This study aims to determine how the effects of inflation and exchange rate against <em>ujrah</em>, <em>musyarakah</em>, <em>mutanaqisah</em> PT Bank Muamalat Indonesia, Tbk Branch Pematang Siantar. This research is a field research using quantitative and qualitative approaches. The data used are secondary data, ie., data obtained from the Central Statistics Agency report, Report of Bank Indonesia, and the financial statements of PT Bank Muamalat Indonesia, Tbk Branch Pematang Siantar. The data were processed using SPSS 16. The analysis used is multiple linear regression analysis. The results showed that the inflation and the exchange rate (the independent variable) affects <em>ujrah</em> in <em>Musharaka</em>h financing <em>mutanaqisah</em> (dependent variable). The independent variables in this study could explain the change by 3.4% and the rest (96.6%) is explained by other variables beyond the variables used. Partially, the level of significant 5% and t <sub>table</sub> of 2034, inflation and exchange rate does not significantly affect the <em>Musharakah</em> financing <em>ujrah</em> <em>mutanaqisah</em>. This is demonstrated by the t <sub>value</sub> inflation of 0. 489 and t<sub>exchange</sub> rate of 0899.</p>

Preferences and amount of food eaten by the prawn Penaeus esculentus over moult cycle

1992 ◽  
Vol 43 (4) ◽  
pp. 727 ◽  
Author(s):  
BJ Hill ◽  
TJ Wassenberg
Keyword(s):  
Regression Analysis ◽  
Feeding Behaviour ◽  
Carapace Length ◽  
Linear Regression Analysis ◽  
Moult Cycle ◽  
Natural Diet ◽  
Stepwise Linear Regression Analysis ◽  
Stepwise Linear Regression ◽  
Daily Food ◽  
Before And After

Analysis of the natural diet of prawns over the moult cycle shows a preference for molluscan tissue at all stages, with an apparent greater preference in the stage immediately following the moult dropping in the intermoult stages and then increasing again before the next moult. A laboratory study was carried out to provide more information on feeding behaviour over the moult cycle. Adults of Penaeus esculentus (carapace length 25 to 30 mm, weight 15.5 to 25.2 g) held at 32 to 35 and 23 to 25°C did not feed on the night of ecdysis. On the following nights, feeding increased to peak at 2.7 g of penaeid tissue per day in moult Stage C. For the rest of the moult cycle, feeding was fairly steady at about 1.23 g of penaeid tissue per day but dropped sharply two nights before ecdysis. The prawns increased in weight by 0.7 to 6.1 g (mean 3.5 g) over a moult cycle. A stepwise linear-regression analysis showed that, within the range tested, the increase in weight was not a function of prawn weight, duration of moult cycle (range 14 to 34 days), or daily food consumption (0.95 to 2.33 g). They ate more crustacean tissue (Metapenaeus bennettae) than bivalve tissue (Perna canaliculatus) over the entire moult cycle, except for the night before and after ecdysis, when they ate bivalve tissue almost exclusively.

Pengaruh Penerbitan Sukuk Ijarah Terhadap Return On Assets, Return On Equity dan Earning Per Share Emiten di Bursa Efek Indonesia Tahun 2009-2013

2015 ◽  
Vol 2 (6) ◽  
pp. 459
Author(s):  
Rianda Ajeng Ardiyanti Putri ◽  
Leo Herlambang
Keyword(s):  
Regression Analysis ◽  
Stock Exchange ◽  
Linear Regression Analysis ◽  
Simple Linear Regression ◽  
Return On Assets ◽  
Return On Equity ◽  
Earnings Per Share ◽  
Analysis Technique ◽  
Equity Ratio ◽  
Independent Variable

Sukuk in Indonesia is growing rapidly with marked Corporate Sukuk issuance reached 65 Sukuk. Within this development also trigger the issuance of Ijarah Sukuk more in demand by the issuer as it is considered more prospective than the Mudharabah Sukuk.This study aimed to determine the issuance effect of Ijarah Sukuk on the financial performance issuer in the Indonesia Stock Exchange in 2009 to 2013. The independent variable in this study is Sukuk to Equity Ratio and the dependent variable in this study are Return on Assets, Return on Equity and Earnings per Share. The analysis technique used is a simple linear regression analysis OLS with 95% of confidence level.The results of this study show that Sukuk to Equity Ratio has significant effect on Return on Assets, but Sukuk to Equity Ratio has not significant effect on Return on Equity and Earnings per Share.

scholarly journals PENGARUH OPERASI MONETER TERHADAP INFLASI DI INDONESIA

2020 ◽  
Vol 5 (1) ◽  
pp. 142
Author(s):  
Nurul Jannah
Keyword(s):  
Monetary Policy ◽  
Regression Analysis ◽  
Research Design ◽  
Quantitative Research ◽  
Linear Regression Analysis ◽  
Statistical Test ◽  
Simple Linear Regression ◽  
Analysis Techniques ◽  
Independent Variable ◽  
The Government

This study aims to determine whether there is a significant influence between monetary operations on inflation in Indonesia. This research was also conducted to find out how monetary policy in Indonesia resolves the inflationary problems that occur. The independent variable in this study is monetary operations. Monetary operations in this study include conventional and sharia monetary operations. The dependent variable in this study is inflation. The research design used is quantitative research design using simple linear regression analysis techniques supported by the classical assumption test and statistical test with the help of SPSS v22 program. The sample of this study was monetary operations and Inflation from January 2017 to Mei 2020. The result of this research showed that the data are normally distributed, and free from multicollinearity. Then this research also shows that monetary operations have significant effect on inflation. Based on the research that has been carried out, it is known that this research is very important to be carried out as a reference for the government in solving the problem of inflation in Indonesia, considering that monetary operations are policies issued by the government in minimizing inflation.

scholarly journals THE INFLUENCE OF MANAGEMENT ACCOUNTABILITY OF VILLAGE FUND ALLOCATION ON COMMUNITY WELFARE IN CIBODAS VILLAGE

2021 ◽  
Vol 3 (1) ◽  
pp. 35-44
Author(s):  
Lilis Saidah Napisah ◽  
Vania Rakhmadhani
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Quantitative Method ◽  
Sampling Method ◽  
Linear Regression Analysis ◽  
Simple Linear Regression ◽  
Simple Linear Regression Analysis ◽  
Fund Allocation ◽  
Village Community ◽  
Independent Variable

This study aims to determine how much influence the management accountability of village fund allocation affects community welfare in Cibodas village, Solokan Jeruk district, Bandung regency. The independent variable in this study is the management accountability of village fund allocation, while the dependent variable is community welfare. The method used in this research is the descriptive quantitative method. The population in this study was the Cibodas village community. The method used in determining the sample was the purposive sampling method. The data in this study were collected through a questionnaire analyzed using simple linear regression analysis. This study shows that the management accountability of village fund allocation influences the community welfare in Cibodas village, Solokan Jeruk district, Bandung regency.

scholarly journals Pengaruh Gaya Kepemimpinan dan Kompensasi terhadap Kepuasan Kerja

2021 ◽  
Vol 6 (2) ◽  
pp. 79-88
Author(s):  
Sinollah ◽  
Muhammad Ubaitulloh
Keyword(s):  
Job Satisfaction ◽  
Regression Analysis ◽  
Linear Regression ◽  
Multiple Linear Regression ◽  
Leadership Style ◽  
Quantitative Methods ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Entire Population ◽  
Independent Variable

This study aims to determine and analyze the influence of leadership style and compensation on job satisfaction at the Employment of Badan Penyelenggara Jaminan Sosial Ketenagakerjaan in Malang Raya. To achieve this goal, this study uses quantitative methods using multiple linear regression analysis. This study uses the dependent variable, namely Leadership Style and Compensation. While the independent variable is satisfaction. The sample used in this study is 44 which is the entire population. The results showed that leadership style and compensation did not have a significant effect either partially or simultaneously on job satisfaction at Badan Penyelenggara Jaminan Sosial Ketenagakerjaan di Malang Raya in Malang Raya

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