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Journal : Bumi Lestari

JENIS DAN KERAPATAN PADANG LAMUN DI PANTAI SANUR BALI I Wayan Arthana
Bumi Lestari Journal of Environment Vol 5 No 2
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

A Study of kind and density of seagrass bed at Sanur Beach Bali has done. Themethod used quadrate transect of 1x1 m. There were 4 stasiuns observed with 9quadrate transects each.Seagrass species found were seven which belong to two families and four genus,namely Enhalus acoroides, Cymodocea rotundata, Cymodocea serrulata, Halophilaovalis, Halodule uninervis, Halodule pinifolia and Syringodium isoetifolium. Thedistribution of seagrass density was more in the middle of the lagoon which is deeper andlower temperature variation. The density of seagrass bed varied of 40 - 338individuals/0,55 m2 and dominated by Enhalus acoroides. The density reduce to thelocation that more fishing activities, landing boats and disturbance by tourists.
Keanekaragaman Dan Distribusi Makroinvertebrata Di Perairan Hulu Tukad Cangkir Dan Tukad Pakerisan Kabupaten Gianyar I Gede Agus Isha Purusa; I Wayan Arthana; I Wayan Darya Kartika
Bumi Lestari Journal of Environment Vol 20 No 2 (2020)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/blje.2020.v20.i02.p04

Abstract

Cangkir and Pakerisan are two rivers which are located in Gianyar-Bali Regency, each with a length of 23 km (54.58 km2 of watershed area) and 34.5 km (58.33 km2 of watershed area). These two rivers empties into Lebih Beach that each has a species diversity and abiotic factors. At the upstream of the rivers were occupied by tourism activities that can affect the ecosystem. This study aims to determine the diversity and distribution of macroinvertebrates in the two rivers. Sampling stations were situated at upstream area with 5 stations and 3 replications (15 points) on each river. Sample identification was carried out at the Laboratory of Water Resources Management, Faculty of Marine Science and Fisheries, Udayana University. It was found four species, namely Littorina carinifera, Melanoides torulosa, Parathelphusa convexa, and Bellamya javanica. At upstream of Cangkir and Pakerisan rivers had species of random category distribution pattern with the Morisita Distribution Index value that equal to one. Physical and chemical factors had a major influence on the ecological conditions of the two rivers. The environmental conditions that consisting of substrate type, several physical and chemical parameters were unable to support the life of various biota species found in these aquatic ecosystems.
Sebaran Pola Pertumbuhan Ikan Red Devil (Amphilophus sp) Di Kawasan Danau Batur, Bali I Wayan Juliawan; I Wayan Arthana; Endang Wulandari Suryaningtyas
Bumi Lestari Journal of Environment Vol 20 No 2 (2020)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/blje.2020.v20.i02.p05

Abstract

Batur Lake is one of the lakes located in the Kintamani sub-district, Bali. This lake has abundant biodiversity, one of them is Red Devil fish (Amphilophus sp) which is a competitor of native and introduced fish. The research aims to find out the pattern of growth, size structure, and the physical and chemical conditions of waters. The method used was descriptive quantitative by using two trapping devices that were fishing rods and nets. Calculation results showed that a wide range of growth patterns of Red Devil (Amphilophus sp) fish on both trapping devices (fishing rods and nets) were grouped (Id<1). The highest sized structure value on the trapping devices (fishing rod) found in the water of Trunyan Village that was total length (TL) of 9,3 cm, Standard length (SL) of 7,3 cm, and weight: 16,5 gr. On the trapping devices (net) the highest value was found in the water of Songan Village that was total length (TL) of 13,5, SL of 11,1, and weight: 48,8 gr. The growth patterns of Red Devil (Amphilophus sp) fish based on length and weight analysis showed that were partly positive allometric and partly negative allometric. The result of the water quality measurement in the water of Batur Lake was about 26,3°C – 29,1°C (temperature), 5,36 mg/L – 6 mg/L, (DO), 7,2 – 7,8 (pH), and 87,1 cm – 147,8 cm (brightness).
STUDI KUALITAS AIR BEBERAPA MATA AIR DI SEKITAR BEDUGUL, BALI (THE STUDY OF WATER QUALITY OF SPRINGS SURROUNDING BEDUGUL, BALI) I Wayan Arthana
Bumi Lestari Journal of Environment Vol 7 No 1
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

Spring is source of water that emerges automatically to the surface from theground. Water samples were taken from springs at Gesing village, close to Buyan lakeand at Teratai Bang Temple (PRTB), a temple in the central of Bedugul BotanicalGarden. There were twenty three parameters of water quality measured and twomicrobiological parameters observed. Six of the twenty five parameters observed wereover than standard namely BOD5, COD, Sulfide, Iron, Lead and Cadmium. The contentof BOD5 at three springs (2.03 – 8.10 mg/l) the highest at PRTB and the lowest at Gesingand all are over standard of 2 mg/l. Cadmium that over standard of 0.01 mg/l is inBuyan spring (0.013 mg/l) and at PRTB (0.012 mg/l). The highest iron is in PRTB spring(0.463 mg/l) that has been over standard of 0.3 mg/l and much higher than that in Balisprings of Sanggalangit, Pemuteran and Banyuwedang (0.1567 – 0.1817 mg/l) also overiron content in Bali lakes that below 0.150 mg/l. Conductivity content in the springs(126-275 ?S/cm), is consistent to the total suspended solid (TDS) of 150-290 mg/l inwhich at the high TDS, the conductivity is high as well and vice versa. At Buyan spring,pH value is the lowest and a bit acid (6.07) that closes related to the highest content ofsulfite (15.55 mg/l). Nitrate at the springs (3.388 – 6.735 mg/l) are high and much higherthan that in Bali springs of Sanggalangit, Pemuteran and Banyuwedang (0.422 - 0.503mg/l) also over than nitrate content in Beratan, Buyan and Tamblingan lakes that below2.5 mg/l.
KOMUNITAS IKAN KARANG DI PANTAI SAWANGAN DAN KUTUH, BALI I Wayan Arthana
Bumi Lestari Journal of Environment Vol 9 No 2 (2009)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

The research has been done at Sawangan coastal water (S 08o49’44,7” E 115o13’20,3”) and at Kutuh coastal water (S 08o50’46,8” E 115o12’07,9”) using manta tow survey and line intercept transect (LIT) at the depth of 9-10 m. At Sawangan it was observed 12 family with 16 species of coral fishes. Family of Lambridae had the bigest individual number (19 individual) which came from species of Cleaner Wrasse (Labroides dimidiatus) with 17 individual and Moon Wrasse (Thalassoma lunare) with 2 individual. At Kutuh it was observed 10 family with 15 species of coral fishes. Family of Pomacentridae and Chaetodontidae had the bigest individual number which came from species of Paletail Chromis (Chromis xanthura ) and Indian Vagabond Butterflyfish (Chaetodon decussatus) with 4 individual each. In total, at Sawangan and Kutuh it was observed 13 family of coral fishes. Among those 13 family, coral fish community from family of Caesionidae, Cirrhitidae and Diodontidae were not available at Kutuh, moreover coral fish from family of Pempheridae was not available at Sawangan. As an ecosystem, the condition of coral fishes at Kutuh were more stable compared to that at Sawangan in which at Kutuh, the diversity index value was bigger and dominant index value was smaller.
KEANEKARAGAMAN JENIS DAN KONDISI EKOSISTEM PADANG LAMUN DI PANTAI MENGIAT, NUSA DUA, BALI Alya Namira; I Wayan Arthana; I Wayan Darya Kartika
Bumi Lestari Journal of Environment Vol 21 No 2 (2021)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/blje.2021.v21.i02.p03

Abstract

This study aimed to determine the diversity, conditions, and diversity of seagrass at Mengiat Beach Bali. The study was conducted for 1 month, January-February 2021. The study was conducted at 3 observation stations using the 50 × 50 cm quadratic transect method. There were 7 types of seagrass, namely Cymodocea rotundata, Syringodium isoetifolium, Halodule pnifolia, Halodule uniinervis, Halophiila ovalis, Thalassodendron cilliatum, and Thalassia hempriichii. The density condition of the seagrass beds at stations I, II, and III was classified as a scale of 5 with the number of stands > 175 ind/m2. The species Cymodocea rotundata had the highest density, which was 904 ind/m2. The percentage of cover condition at station I in the good criteria of a rich / healthy condition witha seagrass cover value of 61.73%, while stations II and III were in the damaged category with less rich / unhealthy conditions with value at station II of 58.44. % and station III of 45.97%. There are 10 types of associated biota found namely Tripneustes gratilla, Etisus splendisus, Linckia laevigata, Atergatis floridus, Ophiothrix fragilis, Echinometra viridis, Echinometra mathei, Echinaster luzonicus, and Fromia Milleporella.
THE CHARACTERISTIC OF WATER QUALITY AT BATUR LAKE, KINTAMANI DISTRIC, BALI PROVINCE I Wayan Arthana
Bumi Lestari Journal of Environment Vol 11 No 1 (2011)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Batur Lake located at Kintamani district, Bangli regency is the biggest lake in Bali that is very important as water stocking for Bali area. Collecting samples at 50 substations was done from June up to October 2009. Temperature value at Batur Lake varied of 23 °C - 25 °C with average of 23.88 °C. The water clarity was around 1.58 - 2.90 meter with the average of 2.32 meter. The average value of water quality of BOD5 and COD were 3.817 ppm and 6.333 ppm respectively. The average content of ammonia was 0.4545 ppm and for Sulfide was 0.0009 ppm. The nutrient content in Batur Lake is that nitrate value varied of 0.0174 - 3.6070 ppm with average of 1.1498 ppm. Phosphate content was from no detection up to 0.3610 ppm with the average of 0.1242 ppm. Heavy metals, the average content of Cd, Pb, Cu and Fe were 0.0038 ppm, 0.0023 ppm, 0.0055 ppm and 0.0428 ppm respectively. There is a strong positive correlation between COD and BOD5 that the higher content of the COD the higher BOD5 content as well with correlation value of R2 = 0.927. The ratio value between COD and BOD5 (COD/ BOD5) varies of 1.061 – 12.163 with the average value of 2.492 ± 1.909.
Pengaruh Pemberian Pakan Berbeda Pada Laju Pertumbuhan Ikan Lele Dumbo (Clarias gariepinus) I Putu Eka Mahendra; I Wayan Arthana; Ayu Putu Wiweka Krisna Dewi
Bumi Lestari Journal of Environment Vol 22 No 1 (2022)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/blje.2022.v22.i01.p02

Abstract

Aquaculture is one of the efforts made to increase fishery production at present and in the future. One type of freshwater aquaculture that is a leading commodity and is widely cultivated by the community is catfish. Different feeding effect on the growth of African catfish fry. This study used 3 different treatments, A feeding 100% silk worms, B feeding 100% maggot and the last C feeding 50% silk worms and 50% maggot.This study aims to determine the specific growth rate, feed conversion ratio (FCR) and Survival rate (SR) in catfish fry fed different feeds of silk worms and BSF maggots Based on the results of research for 30 days from March 2021 - April 2021, the specific growth rate got the highest results, namely in treatment A, namely feeding 100% silk worms and the lowest was in feeding treatment with 100% maggot BSF. According to the treatment given, the results of the growth rate obtained were treatment A of 4.52%, treatment B of 4.13%, treatment C of 4.39%. The lowest FCR results were found in the feeding of 100% silk worms and the highest in the treatment of feeding 100%. The results of the Feeding Conversion Ratio (FCR) or the feed conversion ratio obtained were treatment A which was 1.12, treatment B was 1.68, treatment C of 1.18. In the SR parameter, the highest results were obtained in treatment A, namely feeding 100% silk worms and the lowest in treatment B, namely feeding 100% maggot BSF. The results of the survival rate in this study were 79% in treatment A, treatment B 75%, treatment C 70%.
Identifikasi Morfologi pada Ikan Sidat (Anguilla spp) di Perairan Sungai Bali Selatan Letia Alda Fadilla; I Wayan Arthana; Ni Luh Ayu Gita Astriani; Gde Raka Angga Kartika
Bumi Lestari Journal of Environment Vol 22 No 2 (2022)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/blje.2022.v22.i02.p04

Abstract

Identification is necessary to identify the identity of an organism. Fish can be identified morphologically, namely by recognizing physical characteristics and looking for differences in the fish. This research was carried out for 3 months, from sampling, laboratory activities, and data analysis, starting from January 2021 to March 2021. Sampling was taken universally, samples were obtained from fishermen in the coastal waters of South Bali who caught eels. Laboratory activities are carried out at Fisheries Laboratory, Udayana University. This study used a descriptive analysis method. The sampling technique used in this study was probability sampling with simple random sampling. The stages carried out in this study were divided into two stages, including (1) sampling and (2) identification of morphological characters. The eel samples were obtained based on morphological identification of physical observation, eels are known to have a mottled pattern with slightly rounded oval tails and long fins. The morphometric measurements also obtained the results of the pre-dorsal length (PDL) ratio of 27.98%, the head length (HL) ratio of 14.14%, the ano-dorsal length (AD) ratio of 18.79%, and the ratio of pre-anal length (PAL) of 46.54%. The morphologically and morphometrically identified eel samples were identified as Anguilla marmorata.
KOMPOSISI JENIS DAN TUTUPAN TERUMBU KARANG DI PANTAI SAMUH, NUSA DUA, BALI Krisna Jumantara Panca Putra; I Wayan Arthana; Made Ayu Pratiwi
Bumi Lestari Journal of Environment Vol 22 No 1 (2022)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/blje.2022.v22.i01.p05

Abstract

Terumbu karang dikenal sebagai ekosistem yang sangat kompleks dan produktif dengan keanekaragaman biota seperti moluska, crustacea dan ikan karang. Keragaman hayati karang, fungsi ekologis dan ekonomis tinggi juga di ikuti oleh ancaman yang tinggi dai berbagai aktifitas manusia. Penelitian ini bertujuan untuk mengetahui komposisi jenis dan tutupan Terumbu karang. Penelitian menggunakan metode Purposive Random Sampling. Pengambilan data pada 2 stasiun dengan 3 kedalaman berbeda 3m, 7m, dan 10m dilakukan dengan menggunakan metode transek kuadran 1x1 m2. Penelitian menemukan 15 jenis Terumbu karang di Pantai Samuh meliputi Acropora Baranching (ACB), Acropora Encrusting (ACB), Acropora Submassive (ACS), Acropora Digitate (ACD), Acropora Tabulate (ACT), Non - Acropora Baranching (CB), Non – Acropora Encrusting (CE), Non – Acropora Foliose (CF), Non – Acropora Massive (CM), Non – Acropora Sub Massive (CS), Non – Acropora Mushroom (CMR), Non – Acropora Millepora (CME), Non – Acropora Helliopora (CHL), Soft Coral (SC), Sponge (SP), Zoanthida (ZO), Other (OT). Persentase tutupan Acropora lebih tinggi dibandingkan karang lainnya. Persentase tutupan Terumbu karang tertinggi terdapat di kedalaman 10 m sebanyak 94,75%, terendah di kedalaman 3 m sebanyak 80,66%. Berdasarkan hasil analisis diperoleh kondisi penutupan Terumbu karang di Peraian Pantai Samuh secara umum tergolong dalam kategori baik sekali dan terjaga.
Co-Authors A.A. Gede Cahya Pratama Abd. Rahman As-syakur Agus Wija Atmaja Aida Sartimbul Alfi Hermawati Waskita Sari Alya Namira Anak Agung Sagung Laksmi Dewi Andy Gunawan apri i supi'i Arief Reza Fahlevi Ayu Putu Wiweka Krisna Dewi Ayu, FeviLia Dea Bejo Slamet Beny Mustofa Bram Setyadji Bunga Divia Arimbi Cakranegara, Pandu Adi Candra Saputra CoK.I.M. HANDAYANI Daniel Nemba Dambe Daniel Tri Lakona Sinamo Debi Bunga Novitasari Deny Suhermawan Yusup Deptson Baringin Silaen Desak Putu Risky Vidika Apriyanthi Dewa Ayu Angga Pebriani Dewa Gde Tri Bodhi Saputra Dwi Suprapti Elok Faiqoh Endang Rustiasih Endang Wulandari Suryaningtyas Esayana, Ni Putu Elsita Fikri Huda Falah Fina Wahyuningsih GALIH INDRAWATI Gde Raka Angga Kartika Gde Raka Angga Kartika Gede Dwi Sukmawantara Gede Pasek Sutedja Gede Surya Indrawan Gemaya Wangsa Gultom, Henry Casandra Gunawan Tarigan Gusti Ayu Manik Pradnyani Habibatus Sholihah Hanifa Miranda I.H. Putri Heidi Siddiqa Heri Prabowo Herlisa Setiarini Hikmah Nurazizah Husnayati Hartini I Dewa Gede Warmadewa I Dewa Nym. Nurweda P., I Gede Agus Isha Purusa I Gede Hendrawan I Gede Wahyu Surya Wirawan I Gusti Agung Bagus Arya Pradnya Pratama I Gusti Agung Dwikhy Oka Taradhipa I Gusti Ayu Diah Hendiari I Gusti Ayu Novie Sidaningrat I Gusti Bagus Suputra I Gusti Made Sudipta I Kadek Tobing Ascahya I Ketut Swardika I Komang Dianto I Made Adi Karsa I MADE ADI PRANATHA I Made Minggu Widyantara I MADE SUDARMA I Made Suma Krisna Sravishta I Made Suwitra, I Made I Nyoman Gede Sugiartha I NYOMAN MERIT I Nyoman Sudipa I Nyoman Sumardika I Nyoman Sutama I Nyoman Sutama I Nyoman Yoga Parawangsa I Putu Eka Mahendra I Putu Yoga Pramana Putra I W BUDIARSA SUYASA I Wayan Gede Astawa Karang I Wayan Juliawan I Wayan Kasa I Wayan Restu I Wayan Sandi Adnyana I Wayan Suarna I Wayan Subawa I Wayan Wesna Astara IDA AYU ASTARINI Ida Ayu Putu Widiawati Ida Ayu Utari Dewi ida bagus adi palguna Ida Bagus Ketut Gede Kertia Ida Bagus Lampita Prabawa Ida Bagus Windia Adnyana Ifan Martin Nopem IPG ARDHANA IRMA YULIA MADJID Joko Wiryatno Josua Siagian Josua Siagian KADEK ARY ANGGRAENI KADEK ARY ANGGRENI Kartika, I Wayan Darya Karyono Karyono Khadijah Irania Kolis Pratama Komang Bayu Permana Komang Gede Pramantara Komang Lina Rosita Sugiarni Krisna Jumantara Panca Putra Kusomo, Livia Letia Alda Fadilla Lisa Rosalia Prayuda Ludia Panggalo Luh Putu Diah Ananda Wijayanti Luh Putu Sudini M Alfian Pratama M. Sudiana Mahendra Made Ayu Pratiwi Made Widya Sekarbuana Mahendrawati, Ni Luh Mayang Utami Meta Apriliawati Sandi Miftachudin Syaiful Ma'ruf Mohammad Rizqi Mohan Budiman MOKHLAS SATIBI Mu'tasim Billah Muh. Abduh Anwar Muhammad Asir Muhammad Sawir Muhammad Yusuf Neru, Satrya Raul Ni Desak Putu Dita Herlinawati Ni Kadek Suardiani Ni Komang Rai Widhyaningsih Ni Luh Ayu Gita Astriani Ni Luh Ayu Gita Astriani Ni Luh Gede Ambarawati Ni Luh Gede Rai Ayu Saraswati Ni Luh Made Ari Sugianthi Ni Luh Putu Citra Adriyanti Ni Luh Watiniasih Ni Made Ary Widiastiti Ni Made Ernawati, Ni Made Ni Made Putri Kartika Jati Ni Putu Ayustin Krisnati Dewi Ni Putu Bella Yuliana Dewi Ni Putu Putri Wijayanti Ni Putu Sawitri Nandari Ni Putu Vivin Nopiantari Ni Putu Wiwin Angreni Ni Wayan Desy Wahyudiati Ni Wayan Ernawati NI WAYAN FEBRIANA UTAMI Ni Wayan Indah Purnamawati Nyoman Dati Pertami Octria Vesensia Olivia Grace Brigitta Florencia Pandu Pratama Putra Prabandari, Luh Nyoman Diah Sri Pramesti, Ni Komang Laksmi Ari Widya Putra, I Nyoman Giri Putri Eka Cahyani Putri Febrine Nainggolan Putri Nilakandi Perdanawati Pitoyo Putu Agus Arisudana Putu Ayu Irma Wirmayanti Putu Dyah Prastiti Sukma Febriany Putu Suryani . Rachmat Andi Saputra Rani Ekawaty Ranny R. Yuneni Ravita Kusuma Dewi Rifaldus Dani Rudiarta, I Ketut Gede S.A NYOMAN PUTRI TRIANTINI Sang Ayu Indah Sukma Dewi Sari, Anak Agung Arista Purnama Simon Nahak Stephanus Tambunan Suciati - SUCIKA ARMIANI, SUCIKA Suko Ismi Supardiono Supardiono Suprabadevi Ayumayasari Saraswati Suprabadevi Ayumayasari Saraswati Suprabadevi Ayumayasari Saraswati Suprabadevi Ayumayasari Saraswati SUPRATMAN - Suryadewa, Gusti Ngurah Agung suryawan, Gusti Bagus Susumu Kanno Syachry Banun Takahiro Osawa Takahiro Osawa Takahiro Osawa Teguh Prayogo Udayana , I Gede Kresna Wedatama, I Gusti Ngurah Raka Widiastuti Widiastuti Widiati, Ida Ayu Putu Wijaya, I Made Dicky Taruna Yoga Ibnu Graha Yuli Krisnawati YUNALDI YUNALDI Yuniarti K. Pumpun