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Journal : BioWallacea Journal of Biological Research

LAJU DEKOMPOSISI SERASAH DAUN TUMBUHAN KAYU BESI (Metrosideros petiolata Koord.) DI KAWASAN HUTAN LINDUNG NANGA-NANGA PAPALIA KOTA KENDARI SULAWESI TENGGARA Muhsin Muhsin; Sitti Wirdhana Ahmad Bakkaraeng; Putra Prabowo
BioWallacea : Jurnal Penelitian Biologi (Journal of Biological Research) Vol 4, No 2 (2017): Biodiversity Wallacea
Publisher : University of Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (418.903 KB) | DOI: 10.33772/biowallacea.v4i2.4239

Abstract

ABSTRAK Penelitian ini bertujuan untuk mengetahui laju dekomposisi serasah daun tumbuhan kayu besi  (Metrosideros petiolata Koord.) di Kawasan Hutan Lindung Nanga-Nanga Papalia Kota Kendari, Provinsi Sulawesi Tenggara. Populasi dalam penelitian ini adalah serasah daun dari jenis pohon Kayu Besi (Metrosideros petiolata Koord.) yang terdapat dalam plot pengamatan. Pengamatan bahan yang digunakan adalah serasah daun dari jenis kayu besi (Metrosideros petiolata Koord.) yang terdapat pada kantong serasah. Metode penelitian dengan memasukkan 20 gram serasah daun yang telah kering dan dimasukkan kedalam kantung berukuran 25 x 30 cm yang terbuat dari jaring nilon  sebanyak 64 kantong pada masing-masing presentase penutupan tajuk yang berbeda yaitu 75-100%, 50-75%, 25-50%, dan 0-25%. Pada masing-masing presentase penutupan tajuk diletakkan sebanyak 16 kantung sampel, kemudian ditanam kedalam tanah dengan kedalaman ± 10 cm. Selanjutnya diambil kembali sebanyak 4 kantong serasah pada masing-masing presentase penutupan tajuk pada bulan pertama sampai bulan ke 4. Hasil penelitian menunjukkan bahwa terdapat perbedaan laju penghancuran serasah daun pada presentase penutupan tajuk 75-100% sebesar 7,01 gram/bulan, 50-75%, 6,41 gram/bulan, 25-50%, 6,70 gram/bulan, dan 0-25% yaitu 5,78 gram/bulan. Hasil penelitian ini menunjukkan bahwa ada kecendrungan semakin tinggi pertumbuhan penutupan tajuk maka semakin tinggi laju penghancuran serasah. Kata kunci : Dekomposisi serasah, Tutupan tajuk, kayu besi (Metrosideros petiolata Koord.) ABSTRACT This research aims to determine the decomposition rate of ironwood leaf  (tulis latinnya) litter in Nanga-Nanga papalia protected forest area, Kendari city, Southeast Sulawesi. The population in this research was the leaf litter from ironwood trees (tulis latinnya) in the plot of observation. Besides that, the observation material was the leaf litter from ironwood (tulis latinnya) in the litter bag. The research method was done by putting 20 grams of dry litter into the bag of 25×30  cm which made by nylon net as much as 64 bags for each percentage of different canopy closures, that were 75-100%, 50-75%, 25-50%, and 0-25%. In each percentage of different canopy closure was put as much as 16 sample bags and planted in the soil with ± 10 cm depth. After that, it were taken back as much as 4 sample bags for each percentage of different canopy closure in the first month until the fourth month. The results showed that there were the difference of destruction rate of leaf litter in the percentage of canopy closure 75-100% as much as 7,01 grams/month, 50-75% was 6,41 grams/month, 25-50% was 6,70 grams/month and 0-25% was 5,78 grams/month. It were showed that there was a tendency for the higher growth of canopy closure, the higher the rate of litter destruction.Keywords: Litter destruction rate, percentage of canopy closure, Ironwood (Metrosideros petiolata Koord.)
KOMPOSISI DAN KEANEKARAGAMAN FITOPLANKTON DI PERAIRAN LAUT SEKITAR PLTU Nii TANASA KABUPATEN KONAWE PROVINSI SULAWESI TENGGARA Muhsin Muhsin; Sitti Wirdhana Ahmad; Rati Cahyati
BioWallacea : Jurnal Penelitian Biologi (Journal of Biological Research) Vol 3, No 2 (2016): Biodiversity in Wallacea
Publisher : University of Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (391.546 KB) | DOI: 10.33772/biowallacea.v3i2.5814

Abstract

AbstrakPenelitian ini bertujuan untuk mengetahui komposisi dan keanekaragaman fitoplankton di perairan laut sekitar PLTU Nii Tanasa, Kabupaten Konawe, Sulawesi Tenggara. Penelitian ini dilaksanakan selama tiga minggu (3-24 September 2015). Pengambilan sampel fitoplankton dilakukan pukul 07.00-08.00 pada pagi hari dan pukul 16.00-17.00 pada sore hari.  Pengambilan sampel dilakukan  dengan menggunakan metode purposive sampling. Stasiun I terletak di titik pembuangan limbah air  panas PLTU, stasiun II terletak ± 50 m sebelah timur dari titik pembuangan limbah air panas PLTU, stasiun III terletak di sebelah barat ± 50 m dari titik pembuangan limbah air panas PLTU dan stasiun terletak di sebelah utara ± 200 m dari titik pembuangan limbah air panas PLTU. Terdapat empat kelas fitoplankton yang menempati perairan laut sekitar PLTU Nii Tanasa kelas Cyanophyceae yang terdiri atas 3 spesies, Bacillariophyceae 26 spesies, Euglenophyceae 1 spesies dan Dinophyceae 3 spesies. Kelas Bacillariophyceae  merupakan kelas yang paling dominan di perairan laut sekitar PLTU Nii Tanasa. Nilai indeks keanekaragaman fitoplankton berkisar 0,1732 - 1,9404. keanekaragaman fitoplankton yang terdapat di perairan laut sekitar PLTU Nii Tanasa termasuk dalam kategori keanekaragaman yang rendah dan stabil. Kata kunci : Fitoplankton, Komposisi, Keanekaragaman, PLTU Nii Tanasa. AbstractResearch aims to know the composition and diversity of marine phytoplankton in around PLTU Nii Tanasa, Regency Konawe, Southeast Sulawesi. This study was conducted for three weeks (September 3rd-24th, 2015). The sample collection of phytoplankton was done in the morning (07.00-09.00 AM) and in the afternoon (16.00-17.00 PM). The sample collection is done by using the purposive sampling method in the 4 sites. The site I located in the waste disposal of PLTU, site II located in east (50 m) from the waste disposal PLTU, site III located in western (50 m) from the waste disposal PLTU and site IV to the north of ± 200 m from the waste disposal PLTU Nii Tanasa. There is four class phytoplankton who occupies the sea about coal-fired power Nii Tanasa class cyanophyceae consisting of 3 species, bacillariophyceae 26 species, euglenophyceae 1 species, and dinophyceae 3 species. Class bacillariophyceae constituting a class of the most dominant in the sea about coal-fired power Nii Tanasa. Index value diversity phytoplankton range 0,1732-1,9404. Diversity of phytoplankton in the sea around Coal-Fired Power Nii Tanasa included in the category of low and stable. Keywords: Phytoplankton, Composition, Diversity, PLTU Nii Tanasa
PENGARUH PEMBERIAN MONOSODIUM GLUTAMAT TERHADAP STRUKTUR MIKROSKOPIS OVARIUM MENCIT (Mus musculus, L.) Wa Ode Harlis; Sitti Wirdhana Ahmad; Marwati Marwati
BioWallacea : Jurnal Penelitian Biologi (Journal of Biological Research) Vol 2, No 2 (2015): Keragaman dan Bioteknologi
Publisher : University of Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1074.272 KB) | DOI: 10.33772/biowallacea.v2i2.1476

Abstract

ABSTRACTThis study aims to determine the effect of MSG to the microscopic structure of the ovaries of mice. This study was a experimental study using a completely randomized design (CRD). A total of 16 female mice aged 3 month were devided into 4 groups namely P0 (Control), P1 (0,012 mg/gr BB), P2 (0,015 mg/gr BB) and P3 (0,018 mg/gr BB), MSG administration carried out of 14 days. On day 15 the animals were sacrificed and performed organ harvesting ovaries to make histological preparations. Observation were made by observing the histological structure of the ovaries , and count the number of primary follicles, secondary, tertiary, the korpus luteum and follicular atretic. Data were tested with ANOVA, and LSD (α=0,05%). The result showed the existence of structural damage in the form of a gap between the ovarian follicular granulosa cells and ovarium follicle diameter reduced with increasing doses of MSG given. MSG administration also decreases the average number of follicles in all treatment doses, but the mean of the highest drop in the number of follicles present in treatmen P3 that is, the number of primary follicles (2,50), secondary follicles (2,25), tertiary follicles (1,25) and follicular atretic (4,25), while the corpus luteum is not found.Keywords : Monosodium glutamate, Damaged Structure of The Ovaries, Mice (Mus musculus,L)
Keanekaragaman Hayati Serangga Polinator di Perkebunan Kakao Sitti Wirdhana Ahmad; Amirullah Amirullah; Desi Afdaliana; Sitti Hadijah Sabarwati
BioWallacea : Jurnal Penelitian Biologi (Journal of Biological Research) Vol 9, No 1 (2022): BioWallacea Universitas Halu Oleo
Publisher : University of Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (694.136 KB) | DOI: 10.33772/biowallacea.v9i1.24253

Abstract

The research of the diversity of pollinator insects species in Cocoa plantations in Puudongi village, Kolono region, South  Konawe district, Southeast Sulawesi was conducted in 2016. Ssample collecting was conducted by using yellow pan traps, light traps, adhesive trap and sweep net. Insects diversity was analyzed by using Shannon-Wienner formula. Data presented in tables and graphics. The results showed that the insect pollinator species  consist of 9 species in 7 families. Insects pollinators family are Formicidae, Colydiidae, Syrphidae, Colletidae, Vespidae, Tenthredinidae, and Curculionidae. while those identified to the species level is Anoplolepsis sp., Iridomyrmex sp. and Oechopila smaraghdina. Value insect pollinator diversity found among the sites that H '= 1.96 which indicates that the level of diversity of insect pollinators on plantations Cocoa (Theobroma cacao L.) in the Puudongi village, Kolono region, district East Konawe, South East Sulawesi in the medium category.Keywords: Biodiversity, Insect Pollinators, Cacao Plantation.AbstrakPenelitian tentang keanekaragaman serangga polinator di perkebunan kakao di Desa Puudongi Kecamatana Kolono, Kabupatan Konawe Selatan telah dilakukan pada tahun 2016. Sample dikumpulkan dengan menggunakan yellow pan trap, light trap, adhesive trap dan sweep net. Nilai keanekaragaman dihitung dengan menggunakan rumus Shanon-Wienner. Data disajikan dalam bentuk tabel dan gambar. Hasil penelitian menunjukkan bahwa ditemukan 9 spesies serangga polinator dari 7 famili yaitu famili Formicidae, Colydiidae, Syrphidae, Colletidae, Vespidae, Tenthredinidae, Curculionidae, sedangkan yang teridentifikasi sampai pada tingkat spesies yaitu Anoplolepsis sp., Iridomyrmex sp. dan Oechopila smaraghdina. Nilai keanekaragaman serangga polinator yang ditemukan pada lokasi penelitian yaitu H'= 1,96 yang menunjukkan bahwa tingkat keanekaragaman serangga pollinator pada perkebunan Kakao (Theobroma cacao L.) di Desa Puudongi Kecamatan Kolono, Kabupatan Konawe Selatan Sulawesi Tenggara berada dalam kategori sedang.Kata Kunci : Keanekaragaman, Serangga Polinator, Perkebunan Kakao.