scholarly journals Factors affecting the organochlorine pollutant load in biota of a rice field ecosystem (Ebro Delta, NE Spain)

Chemosphere ◽  
2004 ◽  
Vol 55 (4) ◽  
pp. 567-576 ◽  
Author(s):  
D. Pastor ◽  
C. Sanpera ◽  
J. González-Solı́s ◽  
X. Ruiz ◽  
J. Albaigés
Keyword(s):  
Rice Field ◽  
Ebro Delta ◽  
Factors Affecting ◽  
Pollutant Load ◽  
Field Ecosystem ◽  
Organochlorine Pollutant ◽  
Ne Spain

scholarly journals Faktor-Faktor yang Mempengaruhi Alih Fungsi Lahan Sawah di Kabupaten Aceh Besar

2018 ◽  
Vol 3 (4) ◽  
pp. 525-533
Author(s):  
Raudhatul Husna ◽  
Azhar Azhar ◽  
Edy Marsudi
Keyword(s):  
Time Series ◽  
Population Density ◽  
Rice Field ◽  
Time Series Data ◽  
Statistical Tests ◽  
Secondary Data ◽  
Series Data ◽  
Factors Affecting ◽  
Rice Productivity ◽  
Negative Impacts

Abstrak. Alih fungsi lahan atau lazimnya disebut sebagai konversi lahan adalah  perubahan fungsi sebagian atau seluruh kawasan lahan dari fungsinya semula (seperti yang direncanakan) menjadi fungsi lain yang membawa dampak negatif terhadap lingkungan dan potensi lahan itu sendiri. Penelitian ini bertujuan untuk mengetahui apakah harga lahan, kepadatan penduduk, produktivitas padi dan jumlah PDRB dapat mempengaruhi alih fungsi lahan sawah di Kabupaten Aceh Besar. Data yang digunakan dalam penelitian ini adalah data sekunder. Data yang dikumpulkan adalah data time series dengan range tahun 2002 sampai 2016. Penelitian ini menggunakan metode analisis  regresi linier berganda. hasil penelitian dan pembahasan serta pengujian SPSS menunjukkan bahwa harga lahan, kepadatan penduduk, dan produktivitas padi berpengaruh nyata terhadap alih fungsi lahan sawah di Kabupaten Aceh Besar. sedangkan jumlah PDRB tidak berpengaruh terhadap alih fungsi lahan sawah. Hal ini ditunjukkan oleh koefisien regresi untuk variabel jumlah PDRB sebesar 0,00015. Hasil pengujian statistik menunjukkan nilai t hitung untuk jumlah PDRB sebesar 1,315 dengan nilai signifikan sebesar 0,218. Sedangkan nilai t tabel sebesar 1,782 yang berarti nilai t hitung t tabel (1,315 1,782).  Factors Affecting The Conversion Of Paddy Fields In Kabupaten Aceh Besar Abstract. Land use change or commonly referred to as land conversion is a change in the function of part or all of the land area from its original function (as planned) into other functions that bring negative impacts to the environment and the potential of the land itself. This study aims to find out whether the price of land, population density, rice productivity and the amount of GRDP can affect the conversion of rice field functions in Aceh Besar District. The data used in this research is secondary data. The data collected is time series data with range of year 2002 until 2016. This research use multiple linier regression analysis method. the results of research and discussion and testing of SPSS showed that land price, population density, and rice productivity significantly affected the conversion of wetland in Aceh Besar district. while the number of GDP does not affect the conversion of wetland. This is indicated by the regression coefficient for the GRDP variable of 0.00015. The results of statistical tests show the value of t arithmetic for the amount of GRDP by 1.315 with a significant value of 0.218. While the value of t table of 1.782 which means the value of t arithmetic t table (1,315 1.782).

Residues and dynamics of pymetrozine in rice field ecosystem

Chemosphere ◽  
2011 ◽  
Vol 82 (6) ◽  
pp. 901-904 ◽  
Author(s):  
Cun Li ◽  
Ting Yang ◽  
Weiguo Huangfu ◽  
Yinliang Wu
Keyword(s):  
Rice Field ◽  
Field Ecosystem

scholarly journals Relation of macrofauna diversity and chemical soil properties in rice field ecosystem, Dukuhseti district, Pati regency, Indonesia

2020 ◽  
Vol 15 (2) ◽  
pp. 240-247
Author(s):  
Ramadhan Tanjung Denni ◽  
Alfian Agus ◽  
Winarno Joko ◽  
Retno Rosariastuti ◽  
Sumani Sumani ◽  
...  
Keyword(s):  
Soil Properties ◽  
Rice Field ◽  
Chemical Soil ◽  
Field Ecosystem

scholarly journals Food and Feeding Habits of the Mola Carplet Amblypharyngodon mola (Hamilton, 1822) in Rice Field Ecosystem with Consideration of Water Quality Parameters

Our Nature ◽  
2013 ◽  
Vol 11 (1) ◽  
pp. 61-75 ◽  
Author(s):  
Md. Mostafizur Rahman Mondol ◽  
Dil Afroz Nahar ◽  
Somen Dewan ◽  
Md. Mosaddequr Rahman ◽  
Saleha Jasmine ◽  
...  
Keyword(s):  
Water Quality ◽  
Rice Field ◽  
Feeding Habits ◽  
Quality Parameters ◽  
Gut Contents ◽  
Gut Content Analysis ◽  
Gut Content ◽  
Field Ecosystem ◽  
Food And Feeding ◽  
Plankton Population

The present investigation was conducted in the Agronomy field laboratory of Bangladesh Agricultural University, Mymensingh, Bangladesh during May 1999 to August 1999 to reveal the food and feeding habits of Amblypharyngodon mola in the rice field ecosystem. Percentage of frequency of occurrence and percentage in number methods were used for the qualitative and quantitative estimation of plankton population. Results showed that, during the present study, the water quality parameters were within the suitable range for optimal fish growth and plankton population was abundant in the water of the rice plots. Gut content analysis of A. mola revealed a sum of 32 genera of phytoplankton belonging to Chlorophyceae (17), Euglenophyceae (2), Cyanophyceae (7) and Bacillariophyceae (6) and 8 genera of zooplankton under Rotifera (3), Cladocera (2) and Copepoda (3). In general, Navicula, Fragilaria, Chlorella, Chrysococcus, Closterium, Oscillatoria and Gomphosphaeria were found abundant both in the water of the rice plots and in the gut contents of A. mola indicating that, these genera are preferred food of this fish in the rice field ecosystem. Gut content analysis also exposed that, phytoplankton was the major food item constituting 94.38% of the gut contents’ composition of A. mola whereas zooplankton comprised only 5.62%. The results of this study conclude that, the A. mola is planktivorous in nature, feeding mostly on phytoplankton and could be a suitable species for integrated rice-fish farming.DOI: http://dx.doi.org/10.3126/on.v11i1.8245 Our Nature Vol.11(1) 2013: 61-75

Residues of carbosulfan and its metabolites carbofuran and 3-hydroxy carbofuran in rice field ecosystem in China

2016 ◽  
Vol 51 (6) ◽  
pp. 351-357 ◽  
Author(s):  
Chang P. Zhang ◽  
Hong M. He ◽  
Jian Z. Yu ◽  
Xiu Q. Hu ◽  
Ya H. Zhu ◽  
...  
Keyword(s):  
Rice Field ◽  
Field Ecosystem

scholarly journals Ethnobotanical studies of weed plants in rice field ecosystem

1970 ◽  
pp. 12-14
Author(s):  
Arunesh A, Karuppaiah P, Ajish Muraleedharan
Keyword(s):  
Rice Field ◽  
Rice Production ◽  
Paddy Fields ◽  
Human Beings ◽  
Weed Plants ◽  
Field Ecosystem

Tamilnadu is one of the leading states in rice production in India. Weeds are widely found and are tremendously grown everywhere on paddy fields. Ethnobotany have gained importance during recent years. Based on this, an ethnobotanical exploration has been carried to find out the medicinal values of weed plants growing in the paddy fields of Annamalai Nagar, Cuddalore district. The study reveals the importance of the weed plants associated with paddy fields, a total of 40 species of weeds belonging to 22 families has been recorded in meeting the multiple requirements of human beings.

scholarly journals Growth of Octopus vulgaris (Cuvier, 1797) in tanks in the Ebro Delta (NE Spain): effects of temperature, salinity and culture density

2010 ◽  
Vol 75 (1) ◽  
pp. 53-59 ◽  
Author(s):  
Marina Delgado ◽  
Joan Ignasi Gairín ◽  
Ricard Carbó ◽  
Cristóbal Aguilera
Keyword(s):  
Ebro Delta ◽  
Octopus Vulgaris ◽  
Culture Density ◽  
Effects Of Temperature ◽  
Ne Spain
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