Severe river pollution creates a stressful environment for aquatic organisms, causing disturbances to their health and leading to their extinction. Thus, in this study, the stress responses of tolerant (Oreochromis niloticus) and sensitive (Cyprinus carpio) fish to river pollution in the Citarum River, Indonesia were investigated. The two groups of fish were exposed to varying levels and lengths of water pollution, their blood was sampled, and stress responses were identified. The red blood cells (RBC) count, haemoglobin (HGB), haematocrit (HCT), white blood cells (WBC) count, blood glucose levels, and derived haematological indices such as mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH) and mean corpuscular haemoglobin concentration (MCHC), were measured. Significant changes in these indices, with tendential changes in RBC and HCT, were observed, indicating that stress responses had occurred in both groups of fish. The sensitive fish recorded more pronounced changes in their haematological activities, with greater amounts of blood parameters being altered in response to water pollution exposure. This result suggested that the sensitive fish were more susceptible to environmental stressors and were, therefore, more vulnerable to extinction in a polluted natural environment.
Urban farming activities is markedly increasing with expectation to strengthen the food security in the cities, however, the crop safety and the environmental sustainability of farming activities is questioned. To address environmental sustainability, examination of river water quality and pesticide residue both in the water and crop production in periurban areas of Great Bandung were carried out. STORET index were used to identify the quality of water source with reference to Indonesia Ministry of Environment as well as the biodiversity index to ensure the health of aquatic ecosystem. The results showed that the urban farming practices had utilized clean and uncontaminated water sources to irrigate the land. The good quality of water sources could be maintained even after urban farming activities. The diversity of plankton and macrozoobenthos were relatively increasing, with low-medium level of diversity (H' index = 0.3 -2.9), even in the downstream areas after farming land. None of pesticide residues were found in the crop products. The crops from peri-urban farming of the Great Bandung were safely consumed. Meanwhile, the sustainability of urban farming in the peripheral areas of Great Bandung might be lasted so far as the upstream river pollution from the city could be well-maintained.
Penelitian ini bertujuan untuk mendeskripsikan dan mengetahui pengaruh implementasi boarding school sebagai salah satu upaya pencegahan perilaku hedonis di kalangan remaja, juga didukung dengan kajian QS.Al-Hadid: 20. Objek penelitian ini adalah siswa-siswi MAN Insan Cendekia Jambi. Jenis penelitian ini adalah kombinasi kualitatif dan kuantitatif, sehingga didapatkan hasil saling mendukung antara deskripsi dan besar pengaruh implementasi boarding school sebagai upaya pencegahan perilaku hedonis di kalangan remaja. Hasil analisis data kualitatif menyatakan bahwa implementasi boarding school dapat menjadi salah satu upaya pencegahan perilaku hedonis. Kemudian, hasil analisis data kuantitatif dengan analisis korelasi menunjukkan bahwa niai R = 0,9831. Ini berarti ada hubungan yang signifikan antara implementasi boarding school dan perilaku hedonis remaja. Sehingga dapat disimpulkan bahwa implementasi boarding school behubungan sangat signifikan dan dapat menjadi salah satu upaya pencegahan perilaku hedonis di kalangan remaja dengan nilai kontribusi sebesar 38,4%.
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