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BIOTROPIA - The Southeast Asian Journal of Tropical Biology
Published by Southeast Asian Regional Centre for Tropical Biology
ISSN : 02156334     EISSN : 1907770X     DOI : http://dx.doi.org/10.11598/btb
Core Subject : Health, Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Veterinary
BIOTROPIA, The Southeast Asian Journal of Tropical Biology, is a scientific publication of the Southeast Asian Ministers of Education Organization (SEAMEO) – Southeast Asian Regional Center for Tropical Biology (BIOTROP). It publishes articles in the broad areas of tropical ecosystems and environmental impacts, biodiversity conservation and sustainable development and biotechnology.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 520 Documents
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MACROZOOBENTHIC COMMUNITY STRUCTURES IN SEAWEED CULTURE PONDS IN MUARA GEMBONG ESTUARY, BEKASI , WEST JAVA PROVINCE, INDONESIA Raden Indarjani; Siti Nurhayati
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 29 No. 2 (2022): BIOTROPIA Vol. 29 No. 2 Agustus 2022
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2022.29.2.1664

Abstract

 The study of macrozoobenthic in seaweed culture in Muara Gembong Estuary, Bekasi District, West Java Province, was conducted in May to July 2018. The study was aimed at understanding the roles of macrozoobenthic organisms as ecosystem engineering in seaweed habitat by identifying macrozoobenthic community structures using various biological indices. Sampling sites were conducted at three selected intertidal ponds used for seaweed culture at different distances and perpendicular to the coastline. Samples of macrozoobenthic organisms were collected using an Ekman grab during low tide periods. The study results showed that the macrozoobenthic community from the three ponds were consisted of 9 major benthic families and 14 genera with a total of 139 individuals. The results also showed that gastropod of the genus Cerithiidae was the dominant taxa found in every pond which contributed to 42.45% of the total macrozoobenthic found in the three ponds and became the main contributing taxa to the macrozoobenthic community structure. In addition, genus Platynereis of the Polychaeta Class was found to be another important taxon which contributed to 14.39% of the total macrozoobenthic found in the three ponds. The genus Platynereis were mostly found in the second pond with muddy coarse sandy sediment substrate containing more silt compared to the other two ponds. The rare taxon was the genus Lithophaga from family Mytilidae represented by 1 individual. Our study concluded that the macrozoobenthic community structure in the three ponds was categorized as poorly diverse indicating that the pond system was unstable. The Shannon-Wiener Diversity Index (H’) was only 0.87 on average with the highest diversity index (H’=1.47) was found in the third pond located at the farthest area of the coastline. Meanwhile, the average of Evenness Index was 0.34 indicating that the distribution of the taxa was uneven with a tendency of being dominated by certain taxa.
CADMIUM, NICKEL, AND LEAD CONCENTRATION OF MUNICIPAL DUMPSITE IN WESTERN SAMAR, PHILIPPINES PEARL APHRODITE BOBON-CARNICE; MARISS BOSTRILLO VARONA; JUDY-ANN LIGO AMISTOSO
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 29 No. 3 (2022): BIOTROPIA Vol. 29 No. 3 Desember 2022
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2022.29.3.1669

Abstract

Heavy metal is one of the major problems due to its accumulation from the soil to the food chain, wherein dumpsites are the primary sources of heavy metal pollution. This study aimed to determine the presence of heavy metals in the soil of Santa Rita, Western Samar dumpsite and to quantify them to obtain knowledge on the possible high contamination that may affect the surrounding areas. This study focused on the presence and concentrations of heavy metals Cd, Ni, and Pb. Eighteen (18) soil samples were acquired within the three sampling sites: shoulder slope, main dumpsite, and foot slope. Each sampling site has three sampling points with a depth of 0 - 30 cm and 30 - 60 cm. Analysis showed that all heavy metals are present in the dumpsite, and the concentrations ranged from 0 - 0.1 mg/kg, 0.09 - 3.7 mg/kg, and 0.09 - 3.7 mg/kg for cadmium, lead, and nickel, respectively. In comparing heavy metals within the sampling sites and depths, only cadmium has a significant difference, while Ni and Pb have no significant difference. Compared with WHO standards, all heavy metals tested still fall within the standard limit. Therefore, the dumpsite is still at a safe level. However, residents should take measures to maintain the soil quality since heavy metal contamination in dumpsites is likely to exacerbate
DISTRIBUTION PATTERN AND DIVERSITY OF EPIPHYTIC ORCHIDS IN THE CURUG CIBEREUM PATH, MOUNT GEDE PANGRANGO, INDONESIA Bela Prapitasari; Ardyan Pramudya Kurniawan
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 29 No. 2 (2022): BIOTROPIA Vol. 29 No. 2 Agustus 2022
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2022.29.2.1680

Abstract

The Curug Cibereum path as a tourist attraction in the Mount Gede Pangrango area is dominated by a lush tree, making it a suitable place to find a diversity of epiphytic orchids. This study aimed to determine the distribution pattern and diversity of epiphytic orchids along the Curug Cibereum path which is influenced by environtmental parameters. The research method was carried out by plotting ten plots on the right and left sides of the path, with each plot measuring 500 x 5 m and the distance between plots was 100 m. The results showed that there were 31 species of epiphytic orchids from 12 genera. The distribution pattern of epiphytic orchids was mostly clustered except for Oberonia lotsyana, which had a uniform pattern. The epiphytic orchid species with the highest INP were Bulbophyllum gibbosum with an INP value of 35% and Coelogyne speciosa with an INP value of 20%. Species diversity (H ') was moderate (H '=2.54), the evenness index (E) was high (E=0.73), the dominance index (D) was low (D=0.13). The measurements of environmental parameters showed optimal conditions for the growth of epiphytic orchids, namely with a temperature of 24.5 oC, soil moisture of 76.5%, air humidity of 70%, pH 5.1, the light intensity of 6351 lux and wind speed of 0.03 m/s.
PREGNANT AND LACTATING Macaca nigra: BEHAVIOR AND FOOD SELECTION Dyah Perwitasari-Farajallah; Arismayanti Eka; Qomariah Indira Nurul; Pasetha Andre; Astuti Dewi Apri; Waterman James O.
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 29 No. 2 (2022): BIOTROPIA Vol. 29 No. 2 Agustus 2022
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2022.29.2.1687

Abstract

Pregnancy and lactation are reproductive phases that require large amounts of energy. Females in the reproductive period need good quality and quantity of food to provide nutrition for the fetus, milk production and child care. The mother will adapt to changes in behavior patterns and food type to meet these needs. The influence of parity and environmental conditions can affect the behavior patterns of females. During pregnancy, the Macaca nigra is known to have different proportion of activities in each period, while the behavior during the lactation phase in each mester is unknown. Therefore, this study aimed to analyze the behavior patterns in each mester and the food selection of Macaca nigra during the pregnancy and lactation phases, as well as the influence of female parity and environmental toward the behavior patterns. There were 39 females Macaca nigra observed from two groups from August 2018 to July 2019. An instantaneous focal sampling method was performed to observe females’ daily activities, continuous focal sampling to monitor food types and a selectivity index to analyze food type preferences. The results showed that the female Macaca nigra pattern was influenced by the reproductive phase, female parity and environmental conditions. Females at the end of the pregnancy and lactation phases had a high proportion of feeding and eat more arthropods. Primiparous females mostly performed resting activities. Food preference was influenced by reproductive factors and food availability. The choice of fruit could be affected by fruit availability, and their favorite food was D. mangiferum and Euginia sp.  
MONITORING FOREST AREA CHANGE USING QUICKBIRD SRI ENDAYANI; ANDREW STEFANO; FATHIAH; PURBAWATI; IDA ROSANTI
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 29 No. 2 (2022): BIOTROPIA Vol. 29 No. 2 Agustus 2022
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2022.29.2.1690

Abstract

A study was conducted to compare the urban forest management in three urban forests in Samarinda City. The application of GIS (Geographic Information System) is one of the alternatives to conduct a variety of processes such as: providing geographical information system, identifying the areas of urban forests in Samarinda, helping to plan the process of map digitalization and performing overlay process. The main method used for the data analysis process on the map was the overlay process data analysis technique. The research findings showed that: 1) the appointment of urban forests as the initial step of urban forest development needed more implementation from the government; 2) the urban forest determination needed more socialization to the owner of the urban forest and the public in 1992 and 2019; 3) the urban forests needed more management. There were some similarities and differences in the management of urban forests in the three study locations. The similarities among the three locations were that the three locations had already met the minimum standards of one urban forest location even though there was still one location outside of these three locations which did not meet the minimum standard. The differences were in managing the urban forests. These differences indicated that the urban forest policy was not fully implemented in Samarinda City.
COMMUNITY STRUCTURE OF BENTHIC FORAMINIFERA IN EASTERN WATERS OF SEGARA ANAK LAGOON IN CILACAP TJAHJO WINANTO; PETRUS HARY TJAHJA; AMRON; TAUFAN HARISAN; HENDRAYANA
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 29 No. 2 (2022): BIOTROPIA Vol. 29 No. 2 Agustus 2022
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2022.29.2.1703

Abstract

Benthic foraminifera are types of organisms that are sensitive to environmental changes, so they are often used as a bioindicator for aquatic environmental conditions. The purpose of this study was to determine the community structure of benthic foraminifera community, sediment types and the relationship between the abundance of foraminifera with the sediment types in the eastern waters of Segara Anakan Lagoon in Cilacap. Method used in this study was a survey method. Samples were taken by using random sampling method. The study was conducted at 5 stations with 3 repetitions. Laboratory observations carried out included the types and numbers of benthic foraminifera. Community structure of foraminifera among stations were analyzed using one-way ANOVA, while the relationship between community structures and water quality parameters was analyzed using Pearson correlation. The results showed that in the the eastern waters of Segara Anakan Lagoon there were 58 species of foraminifera which abundance ranged from 532 ind/m2 to 927 ind/m2. The diversity index of foraminifera was in the medium to high diversity categories. The uniformity index of foraminifera was in the high uniformity in a stable community. The dominance index of foraminifera was in the low category. The sediment types was fine sand, medium sand and coarse sand. The relationship between the abundance of foraminifera with the sediment types was strong with high R values (0.763-0.809).
PHYSICAL AND CHEMICAL QUALITIES OF CORN WITH DIFFERENT MOISTURE LEVELS SUPPLEMENTED WITH MOLD INHIBITOR CATOOTJIE LUSJE NALLE; MAX A. J. SUPIT; ANGGA M. AKBAR; EMILIANA LANGODAI; ANGRIANA SO’O
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 29 No. 3 (2022): BIOTROPIA Vol. 29 No. 3 Desember 2022
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2022.29.3.1705

Abstract

Corn grain is used as the main energy source in poultry diet formulation. The quality of corn is easy to deteriorate during storage because of insect, fungal, and mycotoxin contamination. Efforts should be made to maintain the quality of corn during storage. The present study aimed to evaluate the physical and chemical quality of different moisture levels of corn supplemented by a mold inhibitor. A total of 750 kg of corn grain was used in the present study. A commercial mold inhibitor was used with a dose of 0.075%. The experimental design used was a 3 x 2 factorial complete randomized design. The first main factor was the different moisture levels (ML) of corn (≤10%, 10.0-10.9%; 11.0-11.9%), while the second main factor was mold inhibitor (MI, - or +). Thus, there were six treatment combinations, and each treatment comprised five replications. The results showed that ML, MI, and ML x MI interaction significantly (P<0.05 to 0.001) affected the percentage of grain damage and fungal grain but not (P>0.05) the moisture level of corn during 90 days of storage. Except for crude protein content, the ML did not affect (P>0.05) the proximate composition (PC) and gross energy (GE) content of corn. Except for dry matter (DM), the PC and GE content of corn were not affected (P>0.05) by MI. ML x MI interaction did not affect (P>0.05) the PC and GE content. The aflatoxin B1 (AFB1) content was similar (P>0.05) among all treatments. Except for histidine and lysine contents, the amino acid contents of corn were not affected by ML, MI, or ML x MI combination. In conclusion, the supplementation of MI in corn with different ML improved the physical quality, DM, ash, and GE content of corn grain during the storage; MI maintained the DM content but did not reduce the AFB1 content of corn. Except for histidine and lysine, the supplementation of MI in corn with different ML did not affect the amino acid content of corn.
AGEING AND THE AMOUNT OF DNA EXTRACTED FROM BAWEAN DEER (A xis kuhlii ) FECES Adi Nugroho; Denni Susanto; Sena Adi Subrata
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 29 No. 2 (2022): BIOTROPIA Vol. 29 No. 2 Agustus 2022
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2022.29.2.1709

Abstract

Noninvasive genetic sampling is the most reliable approach to collect endangered species which are typically rare and elusive. However, the approach is hampered by poor quality and quantity of DNA amount, and therefore, a pilot study is required. Our current short communication article reports the first noninvasive genetic sampling approach using feces of critically endangered Bawean deer (Axis kuhlii) to test the effect of aging on the amount of DNA extraction. Fecal samples of the Bawean deer were collected from the Bawean Deer Captive Unit in Sangkapura Village, Bawean Island, East Java. The samples were grouped into two different categories, namely: 1) New samples: for feces that had just been expelled for less than a day and 2) Old samples: for feces that were estimated to have been expelled for more than a day. There were 11 New samples and 16 Old samples. The samples were extracted using the QIAGEN Mini Stool Kit. The DNA quantification was carried out by using a fluorometer. The results of the extraction between the two categories were analyzed by the Kruskal Wallis test. The results showed that the mean rank value of the New samples was better (15.27) than the Old samples (13.13). The P value of the Kruskal Wallis test, however, was higher than the Asymp significant value, indicating that there was no meaningful differences (P = 0.49) between the two samples categories. The work described in this short communication article is a preliminary result and an important step in the study of Bawean deer population genetic.
ROLE OF MYCORRHIZA HELPER BACTERIA ON MYCORRHIZAL COLONIZATION AND NEMATODE Pratylenchus coffeae INFECTION REGINAWANTI HINDERSAH; ELENA F. L. LILIPALY; IIS NUR ASYIAH; IMAM MUDAKIR; RITA HARNI
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 29 No. 3 (2022): BIOTROPIA Vol. 29 No. 3 Desember 2022
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2022.29.3.1711

Abstract

The coffee nursery is susceptible to endoparasitic Pratylenchus coffeae. Application of biological method in the nursery is suggested to control the nematode population and maintain the seedling health. The objectives of this study were to observe the ability of Arbuscular Mycorrhiza Fungi (AMF) Glomus spp. and liquid inoculant of Mycorrhiza Helper Bacteria (MHB) consortium Pseudomonas diminuta and Bacillus subtilis for increasing AMF colonization and reducing the infection P. coffeae in Arabica coffee seedling and their growth. A pot experiment was conducted using a Completely Randomized Block Design with four treatments and five replications. The treatments were Glomus spp. spore inoculation without and with two concentrations of MHB. The control treatment did not receive Glomus spp. and MHB. The seedlings were growing in the greenhouse for three months. The results indicated that Glomus spp. and MHB consortium significantly reduced the nematode total number in soil and roots by approximately 30%; and infection degree of P. coffeae by 50%. The application of Glomus spp. significantly increased root colonization by mycorrhizal fungi, but MHB inoculation did not affect the mycorrhizal colonization. Seedlings treated with MHB had higher shoot length compared to the plant without MHB and control; but the leaves number and shoot dry weight of seedlings were not affected by all treatments. Even though the root fresh weight was reduced after MHB treatment, the lateral roots growth of MHB-treated seedling visually was improved. The experiment demonstrated that MHB was efficient to reduce P. coffeae infection of Arabica seedling.
TREES PHYSIOLOGICAL RESPONSES TO AIR POLLUTION IN TAMAN MARGASATWA RAGUNAN AND UI DEPOK CAMPUS DIANA SELVIA HAMID; RATNA YULIATI; AFIATRY PUTRIKA
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 29 No. 3 (2022): BIOTROPIA Vol. 29 No. 3 Desember 2022
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2022.29.3.1764

Abstract

 Air pollution is a common environmental problem. Planting trees can minimize the adverse effects of air pollution. Plants can absorb and accumulate air pollutants through stomata. Biochemical changes in the leaves will appear as a physiological response of plants to air pollution that can be known by calculating the APTI (Air Pollution Tolerance Index) value. This study aimed to analyze the differences in physiological responses of five tree species in Taman Margasatwa Ragunan (TMR) South Jakarta and Universitas Indonesia (UI) Depok Campus as well as to find out the proper tree species planted in areas with high levels of air pollution. The leaves of five species (Hevea brasiliensis, Manilkara kauki, Artocarpus heterophyllus, Ficus septica, and Mangifera indica) were used to examine the effect of air pollution. Biochemical parameters (relative water content, leaf extract pH, total chlorophyll content, and ascorbic acid content) were observed from each species. The value of each parameter was calculated into the APTI equation. H. brasiliensis, F. septica, and M. indica were categorized as moderately tolerant plants, M. kauki were included as intermediate plants, and A. heterophyllus was a sensitive plant to air pollution in both locations. The highest APTI values were observed in M. indica in both locations. Thus, the recommended species planted in a polluted area was M. indica.

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