Hasil Pencarian  ::  Simpan CSV :: Kembali

Hasil Pencarian

Ditemukan 3 dokumen yang sesuai dengan query
cover
Ben-Erik Van Wyk
"[

Telah dilakukan penelitian makrozoobentos di Situ Agathis dan Situ Mahoni masing-masing pada 2014 dan 2010. Penelitian ini bertujuan untuk mengukur komposisi, keanekaragaman, kemerataan, dan dominasi, kemudian mengukur nilai kesamaan kedua komunitas makrozoobentos. Penelitian dilakukan pada bulan Agustus 2024. Setiap perairan dibagi menjadi 3 titik berdasarkan arah aliran air, yaitu inlet, midlet, dan outlet. Sampel makrozoobentos diperoleh dengan ekman grab dan jaring. Parameter air yang diukur adalah suhu, keasaman, turbiditas, kecerahan, dan kadar DO (dissolved oxygen). Komunitas makrozoobentos masing-masing perairan dianalisis dengan indeks keanekaragaman Shannon-Wiener, indeks kemerataan, dan indeks dominasi Simpson. Komunitas kedua perairan dibandingkan dengan menghitung indeks kesamaan Sorensen. Teramati 8 spesies makrozoobentos selama penelitian: Pomacea canaliculata, Filopaludina javanica, Pila scutata dan Lymnaea rubiginosa teramati pada kedua perairan. Gyraulus convexiusculus dan Indoplanorbis exustus hanya teramati di Situ Agathis. Melanoides tuberculata, dan Parathelphusa Bogoriensis hanya teramati di Situ Mahoni. Hasil penelitian di Situ Agathis dan Situ Mahoni menunjukan bahwa nilai keanekaragaman rata-rata adalah sedang, nilai kemerataan rata-rata adalah tinggi, nilai dominasi rata-rata adalah rendah, dan nilai kesamaan antara kedua komunitas adalah 67%. Parameter air air yang tidak ideal untuk makrozoobentos memiliki dampak negatif terhadap keanekaragaman komunitas makrozoobentos.


There have been previous studies on the communities of macrozoobenthos in lake Agathis and lake Mahoni in 2014 and 2010 respectively. This study aims to measure the diversity, eveness, and dominance level of macrozoobenthos communities in both lakes. Sampling is done on August 2024. Each lake is divided into 3 spots based on the flow of the water; inlet, midlet, and outlet. Makrozoobentos samples are obtained with an ekman grab and a net. The water parameters measured are temperature, acidity, turbidity, clarity, and dissolved oxygen levels. Eack macrozoobenthos community is analyzed with the Shanno-Wiener diversity index, the eveness index, and the Simpson dominance index. Both communities are compared with the Sorensen similarity index. Eight species of makrozoobentos are observed in the study. Pomacea canaliculata, Filopaludina javanica, Pila scutata and Lymnaea rubiginosa are found in both lakes. Gyraulus convexiusculus and Indoplanorbis exustus are only found in lake Agathis. Melanoides tuberculata and Parathelphusa Bogoriensis are only found in lake Mahoni. The study finds that lake Agathis and lake Mahoni have an average level of diversity, a high eveness value, a low dominance value, and have a 67% similarity value. Unideal water parameters have a negative effect on the diversity of macrozoobenthic communities.

;, ]"
south africa: Briza Publication, 2004
580 BEN m
Buku Teks SO  Universitas Indonesia Library
cover
Duke, James A
"Presents alphabetically arranged profiles of more than 180 herbs used to treat diseases and ailments, describing their therapeutic uses, medicinal properties, effectiveness, prescription counterparts, dosage options, safety ratings, and precautions; also includes an index of herbs alphabetically arranged by the symptoms they treat"
New York: Rodale Reach, 2000
615.321 DUK g
Buku Teks  Universitas Indonesia Library
cover
Yulvian Sani
"Parasitic dermatitis may cause economic loss for livestock industry if it is not approriately controlled. Among the preventive measures available presently, the use of plant-derived insecticides is regarding as an alternative approach to control the disease since it is environmental and animal health safe. The purpose of this study was to assess the effect of mindi (melia azedarach linn.) extract leaves for controling chrysome bezziana in vitro and in vivo. The study showed that the methanolic extract of M. azedarach leaves affected various stages of C. bezziana larvae. A topical application of 0.25% method extract in vaseline mixture kiled and inhabited the growth of larvae and reduced weight gain of both LI and LI larvae. The average mortality rate in a treated group (26%) was higher than a control group (19.2%). Greater reduction of average weight gain was also seen in the treated group (0.2719 gr.) compared to the control group (0.4761 gr.). The larvae apparently had smaller size and wrinkled shape of anatomical structure seeming that they were inappropriately grown . While the average mortality rate of L2 was found higher in the treated group (46.8%) than the control group (22.4%). The leaf-methanol extract had greater effect to L2 than LI as seen higher mortality rate in L2 (46.8%) than the LI (26%). In conclusion that the higher dose rate of methanol extract applied and short period of time for bioassay. These findings seem very promosing, suggesting that may possible to increase larvicidal effects by increasing the concentration and time of assessment. "
Bogor: Pusat Penelitian Biologi, 2009
BBIO 9:4 (2009)
Artikel Jurnal  Universitas Indonesia Library