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Karnan Karnan
Pendidikan Biologi FKIP Universitas Mataram
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Environmental Science Immunology & microbiology Library & Information Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Fish Diversity in The Seagrass Beds of Labuhan Sangoro Waters, Sumbawa Gusfina, Omira Calia; Karnan, Karnan; Syukur, Abdul
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i2.9013

Abstract

The waters of Labuhan Sangoro in Sumbawa have seagrass beds that function as important habitats for various fish species. Information on fish diversity in this area plays an important role in supporting conservation efforts and management of aquatic resources. This study aims to analyze the level of fish diversity in the Labuhan Sangoro seagrass bed area, Sumbawa Regency, West Nusa Tenggara Province. Sampling was carried out in three locations selected based on differences in habitat characteristics, namely mangrove areas, areas with natural ecological conditions, and areas adjacent to residential areas. The data collection method used a gill net with a length of 25 meters and a width of 1 meter, and two mesh sizes, namely 1.5 inches and 2 inches. The nets were installed at each predetermined location to represent the variation of existing habitats. This approach aims to ensure that the data obtained can reflect the real conditions regarding the distribution and abundance of fish species in the seagrass bed area. The results of the study showed that the diversity of seagrass fish in the waters of Labuhan Sangoro, Sumbawa, was at a moderate level (H’ = 2.91), with a low level of species dominance (D = 0.06), indicating that no species dominated significantly. The high level of evenness (E = 0.92) reflects a relatively even distribution of individuals between species. Overall, the aquatic ecosystem in this area shows a relatively balanced condition and supports moderate biodiversity, with an even distribution of species and no dominance of certain species.
The Effect of Addition Mushrooms Baglog Waste to Growth of Earthworm (Lumbricus rubellus) Populations Zulhaida, Maria; Karnan, Karnan; Ilhamdi, Moh. Liwa
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): Juli-September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i3.9629

Abstract

The utilization of organic waste as a cultivation medium is a crucial step towards promoting sustainable agriculture and mitigating environmental impact. This study aims to evaluate the effect of adding mushroom baglog waste on the population growth of earthworms (Lumbricus rubellus), serving as supporting material in invertebrate zoology. This quantitative research, employing a true experimental method (True Experimental Research), was conducted for 60 days in the researcher's yard at Kebon Kopi Complex, Pejeruk Village, Ampenan District, Mataram City. The research design utilized a completely randomized design with five treatments and seven replications. The applied treatments included P0 (0% mushroom baglog waste), P1 (25% waste), P2 (50% waste), P3 (75% waste), and P4 (100% mushroom baglog waste). The observed parameters were the number and weight of earthworms. Research data were analyzed using the ANOVA test and the Least Significant Difference (LSD) test. The analysis results indicated that the addition of mushroom baglog waste significantly affected the earthworm population (P<0.05), suggesting that different proportions of mushroom baglog waste can increase both the number and weight of earthworms.
Strategi Akselerasi Kenaikan Pangkat dan Jabatan Dosen FKIP Universitas Mataram Mahyuni, Mahyuni; Karnan, Karnan; Safruddin, Safruddin; Intiana, Rohana Hariana; Rispawati, Rispawati
Jurnal Pengabdian Masyarakat Sains Indonesia (Indonesian Journal Of Science Community Services) Vol. 2 No. 1 (2020)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmsi.v2i1.22

Abstract

Pada umumnya, kenai Strategi Akselerasi Kenaikan Pangkat dan Jabatan Dosen FKIP Universitas Mataram kan pangkat dan jabatan dosen seringkali terlambat. Secara umum keterlambatan itu disebabkan oleh dua hal pokok yaitu faktor diri dosen tersebut dan faktor sistem administrasi yang kurang mendukung. Padahal pangkat dan jabatan seorang dosen akan berpengaruh pada kualitas pembelajaran di perguruan tinggi, bahkan akan berpengaruh pada akreditasi program studi. Untuk itu, perlu ada strategi dan upaya dalam rangka akselerasi kenaikan pangkat dan jabatan dosen. Dalam rangka kelancaran pelaksanaan proses pengembangan karier kepada tenaga akademik/dosen di lingkungan FKIP Universitas Mataram, maka dipandang perlu dilakukannya workshop untuk menetapkan strategi akselerasi kenaikan pangkat dan Jabatan Dosen di FKIP Universitas Mataram. Untuk mempermudah dan memperlancar usulan ini, FKIP Universitas Mataram akan mengimplementasikan beberapa langkah strategis, yaitu:  pembentukan tim percepatan untuk publikasi, peningkatan kapasitas sumber daya manusia, sistem arsip secara daring (online), hibah penelitian bagi dosen yang potensial naik ke jenjang Guru Besar, dan pembagian beban tugas (load) staf administrasi yang menangani urusan kenaikan pangkat dan jabatan dosen ke staf administrasi jurusan/program studi.
Isolation and Identification of Phosphate Solubilizing Bacteria from The Rhizosphere of Dry Land Lamtoro Plants (Leucaena leucocephala) in North and South Lombok Regions Hartanto, Priyo; Zulkifli, Lalu; Karnan; Sedijani, Prapti; Mahrus
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i2.6127

Abstract

Phosphate solubilizing rhizobacteria are microorganisms that live in the rhizosphere of plants and have the ability to increase the availability of phosphate in the soil, thereby reducing dependence on chemical fertilizers which are harmful to the environment. This research aims to isolate rhizosphere bacteria from Lamtoro plants and test their ability to dissolve phosphate. Screening the ability of these bacterial isolates was carried out using Pikovskaya media and quantitatively using a spectrophotometer. The test results showed that there were 3 isolates, namely KLU13, A2 and KLS1, which had IKF values in the medium category. Meanwhile, the other 4 isolates had abilities in the low category (isolates A1, A31BK, A3BB and A3). The results of quantitative tests with a spectrophotometer showed that there was an increase in dissolved phosphate from day 2 to day 6. Isolates KLU13, A3 and KLS1 dissolved the highest phosphate on day 6 with values of 14.65 ppm, 14.81 ppm and 10.32 ppm respectively. It can be concluded that the isolate obtained from the Lamtoro rhizosphere which grows in the dry areas of Lombok Island has the potential to be developed as a biofertilizer in the future.
The Community Structure of Gastropods (Mollusca Phylum) in The Intertidal Zone of Saung Beach, Wakan Village, Jerowaru District, East Lombok Regency Suganda, M. Tomy Aria; Karnan, Karnan; Ilhamdi, Moh. Liwa
Jurnal Biologi Tropis Vol. 24 No. 1 (2024): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1.6515

Abstract

Gastropods are one of the phylum Mollusca classes having a single shell, normally spiral-shaped. This research aimed to analyze the Gastropod community structure (Mollusca Phylum) in the Intertidal Zone of Wakan Village, Jerowaru District, East Lombok Regency. The combination of line and quadrat transect was implemented to take samples in this study. The variables in the research include the type and quantity of Gastropods. There were 1.715 individual of Gastropod found in this study. They were included in 11 families and 17 species. The Gastropod species with the highest abundance value in station I and II was Strombus urceus with the abundance value of 12,8 ind/m2 and 5,72 ind/m2, respectively. Meanwhile, in station III, it was Terebralia sulcate with the abundance value of 3,4 ind/m2. The diversity index of Gastropods in the research location was categorized as medium (H’=2,32) with a stable divercity index (E=0,84) and a low domination index (C=0,14).
Fish Diversity at Tanjung Luar Fish Landing Base (FLB) East Lombok as a Field Laboratory for Learning Biodiversity Alpiansah, Hairul; Karnan, Karnan; Mahrus, Mahrus
Jurnal Biologi Tropis Vol. 24 No. 1 (2024): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1.6519

Abstract

Fish is a vertebrate animal living in water, breathes with gills, and swims with fins. The research aims to find fish species and determine the fish species diversity index in FLB Tanjung Luar. The type of research carried out in this research is quantitative descriptive research. The study used a simple random sampling technique. The diversity of fish species in FLB Tanjung Luar has 64 families with 193 species from 12,470 individuals. Some of the fish species found were Euthynnus affinis, Decapterus russelli, Katsuwonus pelamis, Trichiurus lepturus, Rastrelliger kanagurta, Sardinella lemuru, Decapterus kurroides, Selaroides leptolepis, Sardinella gibbosa, Canthidermis maculata, Thunnus obesus, and Selar crumenophthalmus. Pelagic fish species are the most common in FLB Tanjung Luar with  10,724 individuals and  1746 demersal fish species found in FLB Tanjung Luar. The levels of diversity (H') and dominance (D) of fish in FLB Tanjung Luar are respectively 3.092 (high category) and 0.115 (low category).
Biometric Analysis and Population Structure of Blood Clams (Anadara granosa) in The Bagek Kembar Sekotong Mangrove Ecosystem, West Lombok Purnamawati, Rena; Karnan; Japa, Lalu
Jurnal Biologi Tropis Vol. 24 No. 1 (2024): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1.6524

Abstract

Bagek Kembar Essential Ecosystem (BKEE) is one of the mangrove ecosystem areas located in Cendi Menik Village, Sekotong. West Lombok. The Bagek Kembar mangrove ecosystem is designated as an Essential Ecosystem Area which can be used by the community as a place for catching crabs, shellfish, shrimp and fish incluiri for ecotourism activities. Research on biometrics of blood clams aims to analyze the body biometric distribution of blood clams in the BKEE. Blood clams were taken in the Bagek Kembar Mangrove Ecosystem Area, with a total of 186 individuals at each station. Blood clams were  measured on their body parts, namely: shell length, shell width, shell height and weight. The research results showed that the biometrics of the blood clams caught were 12-52 mm long, 10-41 mm wide, 14-54 mm high and 3.5-10.5 grams weight. Judging from the distribution of lengths, the blood clams caught have not yet reached a suitable size for catching because they were dominated by the sizes of under 40 mm (146 individuals), where the suitable size for catching should have a shell size at least 40 mm. Meanwhile, width and height always follow the length, where the length increases. width and height also increase. Meanwhile, the weight distribution has reached the catchable size category with large size of 9.5-10.5 grams as many as 32 individuals.
The Abundance of Rebon Shrimp in Labuan Sangoro Sumbawa District as supplement Material for Learning Invertebrate Zoology Renita, Octa; Karnan, Karnan; Ilhamdi, Mohammad Liwa
Jurnal Biologi Tropis Vol. 24 No. 1 (2024): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1.6654

Abstract

This study was intended to analyze the abundance of rebon shrimp in the Sangoro lagoons of Sumbawa Regency. This research was conducted in Labuan Sangoro, Sumbawa Regency, West Nusa Tenggara. There were three sampling sites we choosed in this research based on the habitat characteristics, namely seagras beds, coral rubble, and mangrove area. We implemented the swept area technique to collect samples using scoop net with 60 cm length, 20 cm width, and 0,5mm mesh size. Rapia ropes were pulled along 50 m for each transect line drawn perpendicular to the shoreline. next, four 10 m transect lines were drawn parallel to the shoreline. The sampling was done by pulling the scoop net along the line transect so that a volume of the scoop net was obtained. In addition, the number of individuals was counted in each 10 m transect line. This research showed that only one species of rebon shrimp found in reseach area, namely Acetes Intermedius. Among three sampling sites, the mangrove area has a highest abundance of shrimp (12506,7 ind/L), followed by seagrass beds area (12189,0 ind/L), and coral rubble area (5102,8 ind/L). It can be concluded that mangrove and seagrass beds are habitat mosly prefered by rebon shrimp.
The Analysis of Population Structure of Mud Crab (Scylla serrata) in The Mangrove Forest Area of Bagek Kembar, West Lombok Hilmi, Masnayati; Karnan, Karnan; Ilhamdi, Mohammad Liwa
Jurnal Biologi Tropis Vol. 24 No. 1 (2024): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1.6683

Abstract

Scylla serrata is one of the species included in the mangrove forest ecosystem which has high economic value for human life. Seeing that mud crabs have high economic potential both domestically and abroad with a fairly high level of demand and abundant availability of catches in nature, concerns arise about the condition of their population. This research aims to determine the population structure of mangrove crabs in the Bagek Kembar Mangrove Forest Area, West Lombok. The method used is purposive sampling. Sampling was carried out at 3 stations representing the entire research location area, namely on the seafront, in the middle and farthest from the arena facing the sea. Each station has its own characteristics. The distance between stations is 50 m. Each station is installed 6 folding trap with a distance between trap 10 m. The length, width, and high size are 50 cm, 30 cm, and 15 cm respectively. This tools are completed by 3 mm mesh size. The results of the research showed that the carapace length of male and female mud crabs that were mostly caught was in the 3 – 4.5 cm and 2.5 – 4.0 cm classes. The carapace width of male and female mud crabs most often caught is in the range of 4.4 – 6.5 cm and 3.5 – 5.5 cm. And the weight of the most commonly caught male and female mud crabs was in the class range of 11.39 – 111.5 grams and 13.77 – 74.5 grams. This research concludes that mangrove crabs that live in the Bagek Kembar Mangrove Forest Area, West Lombok, based on gender, carapace length, carapace width and body weight, are dominated by juveniles. Only a limited number reach catch size.
Abundance and Distribution Patterns of Oysters (Saccostrea cucullata) in the Bagek Kembar Mangrove Area, West Lombok Umami, Lia; Karnan, Karnan; Santoso, Didik
Jurnal Biologi Tropis Vol. 24 No. 3 (2024): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i3.7200

Abstract

An invertebrate critter called Saccostrea cucullata is typically found adhering to substrates like rocks and mangrove roots. The purpose of this study is to ascertain S. cucullata's abundance and distribution patterns. This study was carried out at West Lombok's Bagek Kembar Sekotong Natural Mangrove Area in February 2024. The samples were observed using the 5 x 5 m quadratic transect approach. To ascertain S. cucullata abundance and dispersion patterns, descriptive analysis was performed on the data. According to the study's findings, station I had the greatest abundance (1.81 Ind/m2), while station III had the lowest (0.95 Ind/m2). S. cucullata exhibits a clustered and uniform distribution pattern in certain areas. In the research region, temperature, salinity, and pH are the main factors affecting S. cucullata abundance and dispersion pattern, respectively.
Co-Authors A. Wahab Jufri A. Wahyuli A.A. Ketut Agung Cahyawan W Abdul Syukur Abdul Syukur Abdul Syukur Abdul Syukur Abdul Syukur Agil Al Idrus Agil Al Idrus Ahmad Raksun Ahmad Raksun Ahmad Raksun Ahmad Raksun Ahmad Raksun Ahmad Raksun, Ahmad Alawiyah, Rita Aldauria, Suciq Aldri Frinaldi Alpiansah, Hairul Arif Safrillah Azfani, Lalu Ahmad Azizah, Norma B. A. Janiarti Baiq Diana Safitri Baiq Sri Handayani Baiq Sri Handayani Baiq Sri Handayani Budhi H. Iskandar Bukhari Abdillah Chatarina Umbul Wahyuni Dadi Setiadi Dianam DIDIK SANTOSO Didik Santoso Didik Santoso Diniah, Siti Eliyan Irmasari Ernani Lubis F. F. F. Putri Fahira Putri Utami Fariah, Lailatul Fitriyani Fitriyani Gede Mertha Gito Hadiprayitno Gito Hadiprayitno Gito Hadiprayitno Gusfina, Omira Calia Habibah Hafizatil Adni Handayani, Sri Hilmi, Masnayati Husain, Pahmi I Gde Mertha I Gde Mertha I Wayan Merta I Wayan Merta I Wayan Merta Ilhamdi, M. Liwa Ilhamdi, Mohammad Liwa Imam Bachtiar Imami, Vines Salsa Insani, Reginah Fhathonah Intan Putri Yasa Intiana, Rohana Hariana Irawan, Jono Izza Melati Sukma Jamaluddin Jamaluddin Jamaluddin Jamaluddin Khairuddin Khairuddin Khairuddin Khairuddin Khairuddin Khairuddin Kusuma, Anindita Suliya Hangesti Mandra L. Lisnawati Lalu Japa Lalu Japa Lalu Japa Lalu Japa Lalu Japa Lalu Japa, Lalu Lalu Zulkifli LALU ZULKIFLI Laraswati, Lina Sapta Lidia Zindarti Nurmia Lidya Hasmaningsih Lina Maulina Linda Lestari Lulu Febrianti M. Yamin M. Yamin M. Yamin M. Yamin Mahrus Mahrus Mahrus Mahrus Mahrus, Mahrus Mahrus, H. Mahyuni Mahyuni Mahyuni Mahyuni Mahyuni Manisa, Safariyanti MARDIANA MELATI, PUPUT Merta , I Wayan Moh. Liwa Ilhamdi, Moh. Liwa Mohammad Liwa Ilhamdi Mohammad Liwa Ilhamdi Muh Fahmi Zuhdi Muhlis Muhlis Muhlis Muhsin, Lalu Syukran Mulyani, Irna Mulyono S. Baskoro Mustaruddin Nanisfi, Maulidatin Ni Luh Putu Pebri Artayani . Ni Nyoman Muliaheni Niarni, Baiq Gina Amalia Nila Sari NURUL HIDAYAH Nurwijayanti PRAPTI SEDIJANI, PRAPTI Priyo Hartanto Purnamawati, Rena Putri, Luh Putu Sasmita Sridewi Putu Artayasa Rayyana Renita, Octa Rida, Dea Yolanda Aulia Rispawati Rispawati Rispawati Rispawati, Rispawati Rohana Hariana Intiana Rohani S. Rohana Hariana Intiana Safarianti Manisa Safruddin Safruddin Sirni Hadriwani Suganda, M. Tomy Aria Sulistia Ningrum Suliyadi, Suliyadi SUYANTRI, ENI Syachruddin AR Syafro’ Khuluq Jam’iyyah Syamsul Bahri Tri Ayu Lestari Umami, Lia Ummi Auliya’ Amalina W. Apriani Wahyuningsih Wahyuningsih Wardatul Uyun Winata, I Gede Darma Z. Thifali Z. Unsalhusna Zulhaida, Maria