Abstract. Hertika AMS, Supriatna, Darmawan A, Nugroho BA, Handoko AD, Qurniawatri AY, Prasetyawati RA. 2021. The hematological profile of Badher fish (Barbonymus altus) to evaluate water quality in the Badher Bank Conservation Area, Tawangrejo Village, Blitar District, East Java, Indonesia. Biodiversitas 22: 2532-2541. Badher fish (Barbonymus altus) is endemic to the Brantas River. After years presumably extinct, the Badher fish was found again in 2010 in the Brantas River, Tawangrejo Village, Binangun Sub-district, Blitar District, East Java, Indonesia. A conservation area, called a Badher Bank, was established in the location. However, human activities, such as ecotourism and agricultural waste runoff, have changed water quality and increased water pollution in the Badher Bank Conservation Area. This research objective was to observe the hematological profile of badher fish and a set of water quality parameter measurements as an environmental factor that affected fish life. Data were obtained from four research stations with three replications every two weeks from August to October 2020 at the Brantas River streamline inside the Badher Bank Conservation Area. The Canonical Correspondence Analysis (CCA) method was applied to determine the correlation between water quality and hematological profile. According to the data analysis, the water quality at Stations 1-3 in the research location was normal, and Station 4 was polluted. The analysis also showed that the low dissolved oxygen and high ammonia affected the hematological conditions of Badher fish. All water quality parameters affected the condition of leucocytes, erythrocytes, and hemoglobin in moderate concentrations. Besides that, micronuclei and hematocrit conditions were strongly influenced by ammonia, temperature, pH, and current velocity in high concentrations, while Dissolved Oxygen (DO) and Total Suspended Solid (TSS) affected low concentrations.
Public awareness and knowledge on mangrove forest biodiversity, especially gastropods, is very limited. This study aims to compare the density and diversity index of gastropod species according to their distance from the coastline and to analyze the relationship of the two with the physical environment around them. Three lanes were placed in the southern part of the mangrove forest. The first lane (LT-1) was placed about 5 m from the coastline towards the sea. The second lane (LT-2) was placed 10 m towards the sea from LT-1 and the third lane (LT-3) was 10 m from LT-2 towards the sea. In each lane there were 10 (1 mx 1 m) plots and the distance between adjacent plots was 10 m. A total of 1.432 Gastropod individuals consisting of 16 species and 7 families were collected from 30 plots. In detail 16 species (927 individuals) were collected from LT-1, 16 species (500 indv) from LT-2, and only 3 species or 5 individuals from LT-3. The density of LT-1, LT-2, and LT-3 species respectively was 92.7; 50.0; and 0.5 indv.m-2, while the diversity index successively was 2.56 (moderate); 2.53 (moderate); and 0.95 (low). Both species density and diversity in lanes that are close to the coastline are higher than in lanes located in the direction of the sea. The base substrate on the path that was close to the coastline was clay, while on the lane that laid in the direction of the sea was sandy loam.
PKK (Family Welfare Empowerment) group in Ampeldento Village is a community group whose role needs to be increased, especially in improving family welfare. The problem they have is that the PKK group does not understand the potential of the narrow land owned by the family is the potential to increase family nutrition through the development of aquaponic cultivation systems. Therefore, carried out the implementation of community service programs through the development of the aquaponics system. Data collection techniques are done through interviews and questionnaires. Evaluation of community understanding of the program was carried out using pre-test and post-test. Based on the results of questionnaires and interviews before the program's implementation, it was found that 70% of respondents did not know aquaponics, 50% were not interested, 35% were hesitant in developing aquaponics independently and 45% doubted aquaponics could improve people's welfare. Results improved significantly after the program's implementation and were inversely proportional, with 95% of the community believing that aquaponics could improve welfare and 70% of respondents wanted to develop it independently. Respondents stated that vegetables produced are faster growing, tasty, green, nutritious and large.
Kawasan Konservasi Badher Bank merupakan kawasan konservasi yang terfokus dalam konservasi Ikan Badher yang merupakan ciri khas di daerah tersebut. Tujuan dari penelitian ini untuk menganalisis profil hemosit Susuh Kura (Sulcospira testudinaria) di Kawasan Konservasi Badher Bank dan menganalisis kualitas air dalam rangka evaluasi kualitas perairan. Metode penelitian yang digunakan adalah deskriptif dengan teknik survei. Sampel yang diambil adalah sampel kualitas air dan susuh kura di 4 stasiun. Berdasakan hasil pengukuran kualitas air didapatkan hasil, suhu berkisar 27,3-30,7°C, kecepatan arus berkisar 0,6-1 m/s, kecerahan berkisar 5-8,7 cm, TSS(Total Suspended Solid) berkisar 11-46 mg/l, pH berkisar 7,31-7,60, DO (Dissolved Oxygen) berkisar 3,6-5,1 mg/l dengan ambang batas minimal 4 mg/l, amoniak berkisar 0,043-0,246 mg/l. Hasil kualitas air, hanya amoniak yang melebihi ambang batas. Hasil pengamatan THC didapatkan nilai antara 28x10 4 -96x10 4 sel/ml. Analisis pada DHC didapatkan hyalinosit berkisar antara 16,28-75,49%, Semi granulosit berkisar antara 3,13-23,53% dan granulosit berkisar antara 8,82-72,09%. Hasil analisis CCA menunjukkan THC, hyalinosit dan semi granulosit dipengaruhi 7 parameter dengan konsentrasi sedang. Sedangkan granulosit cenderung dipengaruhi arus yang tinggi, serta DO dan TSS yang berkonsentrasi sedang sampai tinggi. Berdasarkan analisis yang telah dilakukan, maka dapat disimpulkan kondisi perairan di Kawasan Konservasi Badher Bank masih dalam kondisi normal. Namun, pada stasiun 4 terjadi pencemaran karena adanya masukan air limbah pabrik gula.
The inquiry learning model is a process of collecting information through experimentation in solving problems. The school environment can be used in a meaningful learning process, instilling knowledge, awareness, positive attitudes and students’ behavior. This study aims to describe the effect of students' critical thinking skills through the use of an integrated cooperative inquiry model. The method used is descriptive method to describe students' critical thinking skills. The research sample was divided into treatment class (VII A and VII B) and control class (VII C). The results showed a good influence on students' critical thinking skills, such as formulating problems, making hypotheses, making observations, and making analyzes, while the activities of making conclusions were classified as quite good criteria.
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