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Jurnal Biologi Tropis
Published by Universitas Mataram
ISSN : 14119587     EISSN : 25497863     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Biologi Tropis (ISSN Cetak 1411-9587 dan ISSN Online 2549-7863) diterbitkan mulai tahun 2000 dengan frekuensi 2 kali setahun oleh Program Studi Pendidikan Biologi PMIPA FKIP Universitas Mataram, berisi hasil penelitian dan ulasan Ilmiah dalam bidang Biologi Sains.
Arjuna Subject : -
Articles 2,562 Documents
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STRUKTUR KOMUNITAS KUPU-KUPU DI TAMAN WISATA ALAM SURANADI, LOMBOK BARAT M. Liwa Ilhamdi; Agil Al Idrus; Didik Santoso
Jurnal Biologi Tropis Vol. 19 No. 2 (2019): Juli - Desember
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (322.288 KB) | DOI: 10.29303/jbt.v19i2.880

Abstract

Abstrak : Taman Wisata Alam Suranadi merupakan satu dari 11 kawasan konservasi di Nusa Tenggara Barat. Penelitian ini merupakan penelitian deskriptif eksploratif dengan tujuan untuk mengetahui struktur komunitas kupu-kupu di TWA Suranadi Lombok Barat.Pengambilan data dilakukan sebanyak 4 kali pengulangan dalam waktu 2 bulan (April – Mei 2017) pada pagi dan sore hari. Metode pengambilan data menggunakan metode survei dengan teknik sweeping net mengikuti empat jalur pengamatan yakni jalur tepi kiri hutan, jalur tepi kanan hutan, jalur tengah dan jalur air. Hasil penelitian menunjukkan 5 famili kupu-kupu ditemukan di TWA Suranasi (Nymphalidae, Pieridae, Lycaenidae, Papilionidae dan Hesperiidae). Nymphalidae merupakan famili yang memiliki proporsi terbesar dari total proporsi kupu-kupu di TWA Suranadi yakni 35,7% sedangkan proporsi terendah yakni family Hesperiidae (0,9%).Proporsi famili kupu-kupu pada masing-masing jalur ditemukan berbeda. Famili Nymphalidae ditemukan memiliki proporsi tinggi pada dua jalur berbeda yakni jalur kiri (35,3%)dan kanan (37,0%), sedangkan pada jalur air proporsi tertinggi dimiliki oleh Papilionidae (34,1%), dan Pieridae (50,0%) pada jalur tengah. Proporsi terendah dimiliki oleh dua famili yakni famili Hesperiidae pada tiga jalur yakni 0,7% (kiri) 1,0% (kanan), tengah (2,1%), dan famili Lycaenidae (17,1%) pada jalur air. Struktur komunitas kupu-kupu berbeda-beda tiap jalur pengamatan karena perbedan karakteristik habitat di Taman Wisata Alam Suranadi.Kata kunci : Struktur Komunitas, Kupu-kupu, TWA SuranadiAbstract : Suranadi natural park is one of 11 conservation area in West Nusa Tenggara.This research is an explorative descriptive study with aim  to know the structure of the Butterfly community in Suranadi Natural Park, West Lombok. Data retrieval is done in 4 repetitions within 2 months (April-May 2017) in the morning and evening. The method of data collection uses a survey method with sweeping net techniques following four observation paths; first, the left edge of the forest. Second, right edge of the forest, third, middle lane and the last is waterway. The result of the study showed 5 families of butterflies are found in Suranadi Natural Park (Nymphalidae, Pieridae, Lycaenidae, Papilionidae dan Hesperiidae). Nymphalidae is the family that has the largest proportion (35.7%) of the total proportion of butterflies in Suranadi Natural park, while the lowest proporstion is the Hesperidae (0.9%). The different proportion of Butterflies families was found in each parth. Nymphalidae family was found highest proportion on two lines; left line (35.3%) and right line (37.0%), whereas in waterway, the high proportion was owned by Papilionidae (34.1%) and Pieridae (50.0%) in Middle line. The lowest proportion is owned by two families; Hesperidae family on three lines ( left (0.7%), Right (1.0%), and middle (2.1%)) and Lycanidae on waterway (17.1%). The structure of the Butterfly community difference  of each path due to differences in habitat characteristics.Keywords : Community Structure, Butterfly, TWA Suranadi
DAFTAR ISI JURNAL BIOLOGI TROPIS JULI - DESEMBER 2018 Redaksi Jurnal Biologi Tropis
Jurnal Biologi Tropis Vol. 18 No. 2 (2018): Juli - Desember
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (134.045 KB) | DOI: 10.29303/jbt.v18i2.1470

Abstract

TERLAMPIR
MICROSPORE ANALYSIS FOR GENOTOXICITY OF POLLUTED ATMOSPHERIC ENVIRONMENT (THE CASE STUDY IN THE MATARAM CITY) Suripto Suripto; Kurniasih Sukenti; Sukiman Sukiman; Immy Suci Rohyani; Ahmad Jupri
Jurnal Biologi Tropis Vol. 19 No. 2 (2019): Juli - Desember
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (421.142 KB) | DOI: 10.29303/jbt.v19i2.1276

Abstract

Abstract : The need for environmental protection continues to increase, so exploratory studies of agents of polluted environmental indicators are becoming increasingly important. The advantages of using flowering plants for environmental bio-indicator studies include the availability of sufficient test material with their variations and the availability of different periods for sampling. Seven plant species were used to examine their suitability as bio-indicator for genotoxicity of polluted atmospheric environment in Mataram City by microspore analysis. This study was conducted with the aim of, 1) knowing the level of difference in the frequency of failure (abortiveness) of microspores between similar plants that grow in areas at risk of being polluted in the city and those growing in areas not at risk of being polluted outside the city of Mataram, and 2) find out what types of flowering plants, especially those in city parks that are suitable as bio-indicators of air pollution for Mataram City. The percentage of aborted pollens was calculated out of 50 to 300 observed pollen grains of each selected individual flowering plant. Sample of each plant species from every study area consist of ten plant individuals. Data were analyzed by use the Wilcoxon one way-test at a 0.05 to determine significance of difference in the percentage of aborted pollen grains from same plant species between in the risky polluted area and plant in the control area.  The results showed that Lantana camara L. is suitable as bio-indicator for atmospheric pollution in Mataram City or other cities that have a density of traffic flow of motorized vehicles around 100 vehicles per hour. Its percentage of aborted pollen grains is 1,62 ±  0,08 % in the risky polluted area,  and   1,21 ± 0,13 % in the control area. Others six observed plant spesies, i.e.  Acacia auriculiformis A. Conn. Ex Bth., Bauhinia acuminata L., Baugenvillea spectabilis Willd. Duranta erecta L., Ixora coccinea L. and Rosa hybryda Hort., each of them is not suitable as bioindicator for it. Their percentage of pollen abortiveness in polluted and not-polluted areas were not different, significantly.Keywords: Genotoxicity, Microspores, Polluted air environment
EKSTRAK CAIR DAN PADAT LOMBOK SARGASSUM AQUIFOLIUM MERANGSANG PERTUMBUHAN DAN HASIL TANAMAN MENTIMUN (CUCUMIS SATIVUS L.) Eka S. Prasedya; Sonia A. Pebriani; Yogi Ambana; Anggit LS; Sri Widyastuti; Aluh Nikmatullah; Haji Sunarpi
Jurnal Biologi Tropis Vol. 19 No. 2 (2019): Juli - Desember
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (943.542 KB) | DOI: 10.29303/jbt.v19i2.1367

Abstract

Abstrak : Pemupukan anorganik pada sistem budidaya pertanian menimbulkan beberapa masalah, antara lain biaya produksi meningkat, pendapatan petani menurun, tanah menjadi keras dan tidak subur, serta mencemari lingkungan. Karena itu, perlu ada upaya untuk menemukan sumber bahan baku pupuk yang mudah didapat, murah dn ramah lingkungan. Beberapa peneliti sebelumnya melaporkan bahwa rumput laut mengandung fitohormon dan elemen essensial yang dapat merangsang pertumbuhan dan hasil tanaman. Artikel ini melaporkan pengaruh ekstrak cair dan padat Sargassum aquifolium terhadap pertumbuhan dan hasil tanaman mentimun. Ekstrak cair dan padat alga tersebut diperoleh dengan metode Godlewska et al., 2016. Ekstrak cair (10%) disemprotkan satu kali seminggu selama pertumbuhan vegetatif. Ekstrak padat (5%) diberikan pada media tanah saat tanam. Ekstrak cair secara signifikan mempengaruhi sebagian besar parameter pertumbuhan (tinggi tanaman, jumlah cabang dan berat kering tunas) dan pertumbuhan generatif (jumlah dan berat buah per tanaman), namun ekstrak cair tersebut tidak secara signifikan mempengaruhi berat kering akar. Fenomena serupa juga ditemukan pada pengaruh ekstrak padat terhadap pertumbuhan dan hasil tanaman mentimun. Hasil penelitian ini memberikan indikasi bahwa ekstrak cair yang dilaporkan mengandung fitohormon, dan ekstrak padat yang mengandung elemen essensial dapat dikembangkan sebagai “biostimulan” dan “biofertlizer” organik yang dapat memacu pertumbuhan dan produksi tanaman.Kata kunci : ekstrak cair, ekstrak padat, Sargassum quifolium, pertumbuhan, hasil, tanaman mentimun.Abstract : Aplication of inorganic fertilizer in agriculture cultivation system causes some disadventages, such as increase cost production, reduce farmer’s income and soil fertility, and hqrm our environment. Therefore, it is needed to find out raw materials for fertilizer which easy to obtain, cheap and adaptive to our environment. Previous researchres reported that seaweed contained plant growth hormones and essential elements stimuliting growth and yield of plants. This article reports effect of liquid and solid extracts of Sargassum aquifolium on growth and yield of cucumber plants. Liquid and solid extracts were obtained according to modified Godlewska method (2016). Liquid extract (10%) was sprayed once a week during vegetative growth. Moreover, solid extract (5%) was applied in plant media. Liquid extract influenced significantly most growth parameters, such as plant height, branch number, shoot dry weight and yield parameters like fruit number and fruit weight per plant, but liquid extract did not significantly affect root dry weight. Similar phenomena was also found on the effect of solid extract on growth and yield of cucumber plants. The results suggest that liquid and solid extracts containg plant growth hormones and essential element respectively, could be developed as organic biostimulant and biofertilizer inducing growth and plant production.Keywords : liquid extract, solid extract, Sargassum quifolium, growth, yield, cucumber plants. 
ANALISIS HASIL TANGKAPAN RAJUNGAN (PORTUNUS PELAGICUS) SEBAGAI TARGET UTAMA DAN KOMPOSISI BY-CATCH ALAT TANGKAP GILLNET DI PERAIRAN PANTAI PURIRANO, SULAWESI TENGGARA Normayanti Thamrin Mardhan; La Sara; Asriyana Asriyana
Jurnal Biologi Tropis Vol. 19 No. 2 (2019): Juli - Desember
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (453.924 KB) | DOI: 10.29303/jbt.v19i2.1217

Abstract

Abstrak : Penangkapan rajungan di perairan Pantai Purirano umumnya dilakukan oleh usaha perikanan rajungan skala kecil, yang menggunakan jaring insang (gillnet). Gillnet merupakan alat tangkap pasif yang pengoperasiannya tidak merusak sumberdaya hayati perairan. Walaupun demikian, gillnet merupakan alat tangkap yang tingkat selektivitasnya rendah, sehingga dikhawatirkan hasil tangkapan sampingan (bycatch) lebih banyak daripada hasil tangkapan utama (target species). Penelitian ini bertujuan untuk mengetahui proporsi hasil tangkapan rajungan (portunus pelagicus) sebagai target utama dan komposisi bycatch alat tangkap gillnet di perairan Pantai Purirano.Sampel rajungan ditangkap menggunakan jaring insang (gillnet) dengan ukuran mata jaring 4 inci & lebar jaring 80 cm. Hasil tangkapan selama penelitian diperoleh 29 jenis dari 25 famili. Hasil tangkapan yang diutamakan adalah rajungan dari famili Portunidae, tetapi terdapat juga jenis-jenis lain yang juga tertangkap (bycatch), yang sebagian dimanfaatkan (useable) dan sebagian lain dibuang ke laut (discarded). Jumlah total hasil tangkapan rajungan jantan selama penelitian adalah 58 ekor (54%) dan betina sebanyak 50 ekor (46%). Indeks dominansi hasil tangkapan tergolong rendah yaitu berkisar 0,21 – 0,27. Hal ini mengindikasikan bahwa selektivitas alat tangkap jaring insang tergolong rendah.Kata Kunci : Rajungan (Portunus pelagicus), Bycatch, Gillnet, PuriranoAbstrack : Catching crabs in Purirano Beach is generally carried out by small-scale crab fishing businesses, which use gillnet.  Gillnet is a passive fishing gear whose operation does not damage aquatic biological resources.  However, gillnet is a fishing tool with a low selectivity level, so it is feared that bycatch by-catch is more than the main catch (target species).  This study aims to determine the proportion of crab catches (portunus pelagicus) as the main target and the composition of gillnet fishing gear bycatch in Purirano Beach waters.  Swimming crab samples were captured using gill nets with mesh sizes of 4 inches & net width of 80 cm.  The catch during the study obtained 29 species from 25 families.  The preferred catch is crabs from the family Portunidae, but there are also other species that are also caught (bycatch), some are used (useable) and some others are thrown into the sea (discarded).  The total number of male crab catches during the study was 58 individuals (54%) and 50 females (46%).  The catch index dominance is relatively low, in the range of 0.21 - 0.27.  This indicates that the selectivity of gill nets is relatively low.Keywords : Rajungan (Portunus pelagicus), Bycatch, Gillnet, Purirano
THE CONTRIBUTION OF CIBODAS BOTANIC GARDEN AS AN EX-SITU CONSERVATION SITE FOR TROPICAL MOUNTAINOUS PLANTS: THE LAST DECADE Imawan Wahyu Hidayat; Neneng Ine Kurnita; Dimas Ardiyanto
Jurnal Biologi Tropis Vol. 19 No. 2 (2019): Juli - Desember
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1046.961 KB) | DOI: 10.29303/jbt.v19i2.1317

Abstract

Abstract: The threats to the plant biodiversity become more advance along with rapid degradation of the natural habitat. Plants preservation needs accompaniment between in-situ and ex-situ conservation altogether. The ex-situ plant conservation plays more important roles in order to help conserve threatened plant species. Cibodas Botanic Garden (CBG) is a government institution which has the main assignment on ex-situ plant conservation, especially tropical mountainous plants. In the last decade, CBG has conducted exploration and plants collection in order to retrieve them from the destructive pressures in their habitat. This study aimed to asses the CBG’s contribution to ex-situ plant conservation through the addition number of planted plants and to describe the important value to conservation. The study conducted through a quantitative descriptive method, based on data inventory of the newly planted plant in the garden from 2008 to 2018. This also assessed the increasing collection of each year and descriptively explaining the background data, species variety, and their conservation status. The results described that the additional number was 473 specimens and the average increase was 43 specimens per-year. These originated from exploration and plants collection 248 specimens, donation 217 specimens, self-propagation seven specimens, and one specimen from seeds exchange. The most planted was Nepenthaceae with 84 specimens, secondly Phillantaceae with 21 specimens, and Lauraceae 15 specimens. There were 116 species (152 specimens) which have conservation status. These expected to be a comprehensive description of the CBG’s plant collection and meaningful for the conservation efforts in general.Keywords: ex-situ plant conservation; garden collection; Cibodas Botanic Garden (CBG)
STRUKTUR KOMUNITAS IKAN PADA EKOSISTEM MANGROVE DI DESA BASULE KECAMATAN LASOLO KABUPATEN KONAWE UTARA Sandra Nolan; Muhammad Ramli; Bahtiar Bahtiar
Jurnal Biologi Tropis Vol. 19 No. 2 (2019): Juli - Desember
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (487.901 KB) | DOI: 10.29303/jbt.v19i2.1090

Abstract

Abstrak : Desa Basule memiliki potensi ekosistem mangrove yang terus mengalami penerunan kualitas dan kuantitas sejalan dengan terus meningkatnya penangkapan yang merusak dan terus menurunnya komonitas ikan di daerah ekosistem mangrove, sehingga perlu dilakukan penelitian tentang kondisi sumber daya ikan yang terdapat di perairan tersebut sehingga dapat menjadi suatu informasi ilmiah yang berguna untuk pengelolaannya. Penelitian ini bertujuan untuk mengetahui komposisi ikan, menganalisa struktur komunitas ikan hubungannya dengan aspek fisika-kimia perairan di kawasan mangrove Desa Basule. Penelitian ini berlangsung selama 3 bulan bertempat di kawasan ekosistem mangrove Desa Basule. Stasiun penelitian ditentukan berdasarkan kerapatan mangrove dengan menentukan daerah mangrove kondisi tutupan padat, sedang dan jarang. Data yang dianalisis meliputi: indeks nilai penting mangrove, komposisi jenis ikan, struktur komunitas ikan dan analisis korelasi (PCA dan CA). Selama penelitian jumlah total ikan yang berhasil diidentifikasi dari ketiga stasiun di daerah ekosostem mangrove sebanyak 17 jenis dari 14 famili dan 14 genus. Nilai keanekaragaman tergolong rendah sampai sedang dengan kisaran 0,580-1,552, nilai keseragaman tergolong rendah dengan kisaran 0,130-0336 dan nilai dominansi tergolong ada dan tidak ada dominansi dengan kisaran 0,309-0,732. Hasil analisis PCA menjelaskan bahwa parameter lingkungan yang menjadi penciri adalah parameter salinitas (0,81), DO (0,97), nitrat (0,97) dan suhu  (0,81).  Hasil analisis CA ditemukan 3 kelompok. Kelompok I dicirikan oleh Chanos-chanos, Leiognatus sp, Parupeneus sp, Sphyraena genie, Tylosurus crocodilus dan Bibisa. Kelompok II dicirikan oleh Caranx sexfasciatus, Saurida tumbil, Periopthalmus argentiliniatus, Oreochromis mossambicus, Scatophagus argus dan Therapon theraps. Kelompok III dicirikan oleh Gires filementous, Girres oyena, Valamugil speigteri, Lutjanus sp dan Kooko.Kata Kunci : Ekosistem Mangrove, Struktur Komunitas Ikan, Korelasi, Desa Basule Abstract : Basule Village had a potential of mangrove ecosystems which continued in decreasing of quality and quantity in line with the increasing of destructive fishing and also declining of fish communities in the mangrove ecosystem area, so researcher needed to conduct the research about the condition of fish resources in the waters of Basule Village so that it can become a scientific information which was useful for management. This research aimed to determine the composition of fish and analyzed the structure of fish communities in relation with the physical-chemical aspects of waters in the mangrove area of Basule Village. This research was conducted for 3 months which located in the mangrove ecosystem area of Besule Village. The research station was determined based on the density of mangroves by determining the conditions of solid, medium, and rare cover in the mangrove area. Data analysis included the important of index value of mangrove, the composition of fish species, fish community structure, and correlation analysis (PCA and CA). During the research, the total number of fish that identified from the three stations in the mangrove ecosystem area was 17 species from 14 families and 14 genera. The diversity value was classified as low to moderate with a range of 0.580-1.552, the uniformity value was classified as low with a range of 0.130-0.336 and the dominance value was classified as there was dominance and there was no dominance in the range of 0.309-0.732. The results of the PCA analysis explained that the environmental parameters that identified were salinity (0.81), DO (0.97), nitrate (0.97) and temperature (0.81) parameters. The results of CA analysis found 3 groups. Group I was characterized by Chanos-chanos, Leiognatus sp, Parupeneus sp, Sphyraena Genie, Tylosurus Crocodilus and Bibisa. Group II was characterized by Caranx Sexfasciatus, Saurida Tumbil, Periopthalmus Argentiliniatus, Oreochromis Mossambicus, Scatophagus Argus and Therapon Theraps. Group III was characterized by Filementous Gires, Girres Oyena, Valamugil Speigteri, Lutjanus sp and Kooko. Keywords : Mangrove Ecosystem, Fish Community Structure, Correlation, Basule Village
STRUKTUR VEGETASI MANGROVE ALAMI DAN REHABILITASI PESISIR SELATAN PULAU LOMBOK Laily Hunawatun Sani; Dining Aidil Candri; Hilman Ahyadi; Baiq Farista
Jurnal Biologi Tropis Vol. 19 No. 2 (2019): Juli - Desember
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v19i2.1363

Abstract

Abstrak : Rehabilitasi mangrove merupakan salah satu upaya yang dilakukan untuk mengurangi laju kerusakan hutan mangrove di Indonesia salah satunya di kawasan Teluk Gerupuk. Penelitian ini bertujuan untuk mengetahui kondisi mangrove hasil rehabilitasi di Teluk Gerupuk dengan mebandingkan struktur vegetasi mangrove di kawasan tersebut dengan ekosistem mangrove alami. Pelaksanaan penelitian dilakukan pada bulan April-Juni 2019 di dua kawasan hutan mangrove di pesisir selatan pulau Lombok yaitu hutan mangrove alami desa Pemongkong dan hutan mangrove rehabilitasi Teluk Gerupuk. Pengambilan data dilakukan dengan menggunakan metode transek berpetak dengan ukuran petak 10 x 10 m untuk tipe pohon, sub petak 5 x 5 m untuk tipe pancang, dan petak semai berukuran 2 x 2 m. Terdapat 11 spesies mangrove ditemukan di dalam plot penelitian dengan persebaran spesies yaitu 8 spaesies ditemukan di hutan mangrove alami Pemongkong dan hanya 7 spesies ditemukan di hutan mangrove rehabilitasi Gerupuk. Spesies mangrove yang dimaksud termasuk ke dalam 4 famili yaitu Avicenniaceae (Avicennia alba, A. marina, A. lanata), Rhizophoraceae (Ceriops decandra, C. tagal, Rhizophora apiculata, R. mucronata, R. stylosa), Rubiaceae (Scyphiphora hydrophyllaceae) dan Sonneratiaceae (Sonneratia alba, S. casiolaris). Struktur vegetasi kedua ekosistem sangat berbeda terlihat pada vegetasi penyusunnya. Hutan mangrove alami Pemongkong didominasi oleh jenis Sonneratia alba dan Avicennia alba yang memiliki Indeks nilai penting (INP) untuk tipe pohon dan pancang dengan nilai masing-masing 132,37 dan 141,52, sedangkan hutan mangrove rehabilitasi didapatkan INP tertinggi pada tipe pohon dan pancang yaitu jenis R. apiculata dan R. stylosa dengan INP berturut-turut 140,5 dan 116,41. Rehabilitasi hutan mangrove dengan metode yang selama ini dilakukan telah mengubah struktur vegetasi hutan mangrove di Pulau Lombok yang juga dapat mempengaruhi fauna asosiasi dan ekosistem sekitar mangrove. Oleh karena itu, diperlukan perencanaan serta analisis terlebih dahulu terhadap lokasi tujuan rehabilitasi mangrove agar untuk terbentuknya hutan mangrove rehabilitasi yang lebih sesuai dengan biota asosiasi dan ekosistem sekitar yang telah ada sebelumnya.Kata Kunci : Struktur Komunitas, Mangrove, Alami, RehabilitasiAbstract : Rehabilitation of mangrove vegetation was an effort in order to decrease the rate of mangrove ecosystem destruction. This research aimed to determine the vegetation structure and the community status of natural and rehabilitation mangrove forest at South Lombok seashore. This research held on March – June 2019 at two types of mangrove ecosystem such as natural ecosystem at pemongkong, East Lombok and rehabilitation ecosystem at Gerupuk bay, Central Lombok. Data collection used plotted transect method by placed a plot sized 10x 10 m alternately. There are 11 species of mangrove found which belong to 4 families such as Avicenniaceae (Avicennia alba, A. marina, A. lanata), Rhizophoraceae (Ceriops decandra, C. tagal, Rhizophora apiculata, R. mucronata, R. stylosa), Rubiaceae (Scyphiphora hydrophyllaceae) and Sonneratia (Sonneratia alba, S. casiolaris). Vegetation structure in these 2 location was different based on the composition each vegetation and it proportion. Natural mangrove forest in pemongkong dominated by Sonneratia alba with importance value reached 132,37, meanwhile the rehabilitation area of mangrove ecosystem Gerupuk dominated by Rhizophora apiculata with number of importance value reached 140,5. These differences drove the value of persent of similarity (PS) between these ecosystem only reached 10.41% which categorized as low similarity. Mostly of rehabilitation of mangrove ecosystem conducted cause the alteration of vegetation structure of mangrove in Lombok coastal and affect the mangrove associated fauna and ecosystems. In that case, it really important to analys the condition of mangrove rehabilitation plan location to determine the mangrove species to plant in order to formed a rehabilitiation of mangrove area which more compatible to its associated biota and ecosystems.Keyword : Structure, Mangrove, Natural, Rehabilitation  
KEBERADAAN HEWAN PENGOTOR TERITIP DI INFRASTRUKTUR TELUK KUNYIT, PANTAI SARIRINGGUNG DAN PANTAI MUTUN, LAMPUNG Hendry Wijayanti; Dhani Gathot Herbowo; Andy Darmawan
Jurnal Biologi Tropis Vol. 20 No. 1 (2020): Januari - April
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (463.878 KB) | DOI: 10.29303/jbt.v20i1.1540

Abstract

Abstrak: Teritip merupakan salah satu hewan pengotor yang umum hidup menempel pada infrastruktur buatan manusia yang teredam di dalam perairan laut. Fenomena penempelan teritip mengakibatkan kerusakan struktur bangunan pada infrastruktur di perairan laut. Tujuan penelitian ini menginventarisasi  keberadaan jenis teritip yang menempel pada infrastruktur yang ada di area pantai yang berada di Teluk kunyit, Pantai Sariringgung dan Pantai Mutun sebagai langkah awal dalam pengendalian hewan pengotor. Penelitian dilakukan dengan metode survei selama bulan April and November 2018. Pada kedua Pantai Sariringgung dan Pantai Mutun ditemukan dua spesies teritip, Amphibalanus amphitrite dan Microeuraphia withersii. Namun, jenis teritip yang ditemukan di Teluk Kunyit hanya satu spesies Cthtamalus malayensis..Kata kunci: introduksi, biofouling, zona intertidal, Teluk Lampung.Abstract: Barnacle is the most common biofouling in the manmade  submerged structures. Barnacles are a serious problem which leading the detriment of coastal structures. The aim of the study was to  investigate the dataset of barnacale communities in Lampung shores, in order to monitor developing of biofouling. Three  coastal areas of Teluk Kunyit, Sariringgung and Mutun were investigated between April and November 2018. It was found that two species, Amphibalanus amphitrite and Microeuraphia withersii, are found in both costal areas. In contrast, only colonial species of Cthtamalus malayensis has been found abundance in Teluk kunyit area.Keywords: introduction, biofouling, intertidal zone, Lampung Bay
ANALISIS HUBUNGAN PANJANG BERAT PADA IKAN HERMAPHRODIT : KERAPU SUNU (Plectropomus leopardus) DAN KERAPU MACAN (Epinephelus fuscoguttatus) Haris Setiawan; Achmad Fahrudin; Mohammad Mukhlis Kamal
Jurnal Biologi Tropis Vol. 19 No. 2 (2019): Juli - Desember
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (427.563 KB) | DOI: 10.29303/jbt.v19i2.1162

Abstract

Abstrak : Penelitian ini bertujuan untuk mengeksplorasi hubungan panjang berat dua spesies ikan kerapu hermafrodit, yaitu kerapu sunu (Plectropomus leopardus) dan kerapu macan (Ephinephelus fuscoguttatus). Sebanyak 1.263 individu ikan yang terdiri dari 609 dan 654 spesies pertama dan kedua, masing-masing dikumpulkan dari perairan Wangi-Wangi dan Karang Kaledupa Taman Nasional Wakatobi selama September 2018 hingga Februari 2019. Ikan dikumpulkan secara acak yang merupakan hasil tangkapan pancing  dan tombak. Hasil  kedua spesies menunjukkan pola pertumbuhan alometrik (p <0,01 untuk keduanya) di mana nilai b masing-masing adalah 2,46 dan 2,73. Berdasarkan koefisien korelasi (R2), ditemukan bahwa variasi berat mampu menjelaskan 90% lebih panjang tubuh ikan. Berdasarkan panjang ikan saat tertangkap dan panjang pertama kali matang gonad, ditemukan bahwa betina P. leopardus sebagian besar ditangkap sebelum matang gonad (> 70%), sedangkan E. fuscoguttatus untuk kategori yang sama berada pada persentase yang lebih rendah (<50%). Langkah-langkah pengelolaan pada spesies hermafrodit dapat difokuskan pada proporsionalitas antara betina dan jantan terhadap keberhasilan reproduksi.Kata Kunci : Panjang Berat, E. fuscoguttatus, P. leopardusAbstract : The present research was aimed to explore the length-weight relationship-based growth of two hermaphrodite groupers, leopard coral grouper (Plectropomus leopardus) and tiger grouper (Ephinephelus fuscoguttatus). A total of 1,263 individual fishes comprising 609 and 654 individuals of these two species respectively, were collected from Wangi-Wangi and Kaledupa reef in Wakatobi National Park from September 2018 to February 2019. Fish were randomly sampled from catches that used hook-and-lines and spears. The results found that both species follow allometric growth patterns (p<0,01 for both) of which b values were, respectively, 2,46 and 2,73. Based on coefficient correlation (R2), it was found that weight variability is able to explain more than 90% of length. By comparing length at catch and length at first maturity, it was found that females of P. leopardus were largely caught at pre-mature stage (>70%), while for E. fuscoguttatus <50% of females were pre-mature. We suggest that management measures for hermaphrodite species should focus on the proportionality between females and males towards their reproductive success.Keywords : Length-weight relationship, E. fuscoguttatus, P. leopardus

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