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All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Journal of Tropical Biodiversity and Biotechnology Berkala Penelitian Hayati
Luhur Septiadi
Department of Biology, Faculty of Science, Chulalongkorn University, Pathumwan 10330, Bangkok, Thailand
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology

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The Influence of Agrochemicals on Macroinvertebrate Community Structure in Various Agricultural Rivers in Jember Regency Agung Sih Kurnianto; Hari Purnomo; Luhur Septiadi
Journal of Tropical Biodiversity and Biotechnology Vol 7, No 1 (2022): April
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtbb.69425

Abstract

The intensive use of agrochemicals in agricultural areas of Jember’s Regency presents a potential threat to the freshwater ecosystem’s community. The use of the benthic macroinvertebrates community may provide a key to monitor the extent of agrochemical impact to maintain valuable ecosystem services. Macroinvertebrates community structure and environmental factors were studied from September–December 2020 in Jember Regency by comparing three different types of agricultural rivers (organic, semi-organic, and conventional). Five community indices (taxa, individuals, Simpson dominancy index, Margalef species richness, and Shannon diversity index) were used to compare the macroinvertebrates community structure between sites. Using community composition and physicochemical properties (bare sediment, width, depth, water current, pH, conductivity, dissolved oxygen (DO), and temperature), we generated CCA triplot and correlogram plot to investigate the grouping and the correlation between variables and sites. Results on macroinvertebrate composition showed the importance of using sensitive taxa-group and community indices as an indicator of environmental changes. The family of Tipulidae, Naididae, Cysticidae, and Nereididae demonstrated relation to semi-organic agricultural rivers. Temperature and water current correlate to the presence of clean water indicator species such as Philorheitridae and Chironomidae, as observed in organic agricultural rivers. Conventional and semi-organic agricultural rivers were grouped and largely contributed by the 5 families including Ampullariidae, Pachychillidae, Baetidae, Enchytraidae, and Gomphidae. Correlogram plot suggests a complex interaction between macroinvertebrate community and environmental variables. It can be concluded that the intensive use of agrochemicals may lead to a detrimental change toward the diminished quality of freshwater community and environment. 
Communities and tree-species preferences of birds in traditional agroforestry system in Meru Betiri National Park Agung Sih Kurnianto; Luhur Septiadi; Puji Firmansyah; Nilasari Dewi
JURNAL PENELITIAN BIOLOGI BERKALA PENELITIAN HAYATI Vol 27 No 2 (2022): June 2022
Publisher : The East Java Biological Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23869/bphjbr.27.2.20225

Abstract

Agroforestry is a critical component of providing primary habitat for birds. Meru Betiri National Park (MBNP) establishes a diverse array of ecologically and economically significant trees while allowing local residents to farm beneath them, resulting in the formation of a complex agroforestry system. The purpose of this study is to examine bird communities and their tree-species preferences across tree height levels in MBNP's traditional agroforestry system. For vegetation analysis, we used the circle method, and for bird data collection, we used the point count method in a single circle approach. For both vegetation and bird communities, the ecological indices (the important value index, Shannon-Wiener diversity index, Margalef species richness index, and evenness index) were calculated. Birds' ecological roles and activity preferences were analyzed using principal component analysis and presented in stratified tree height levels. The results indicated that insectivores’ birds are the primary insect predators in the traditional MBNP agroforestry system (11 out of 16 bird families). Artocarpus heterophyllus was the most frequently visited tree species out of seven, which may have significant ecological value (for bird diversity) and economic benefits (for avitourism). Finally, one can deduce that the majority of bird activity occurs between 4 and 20 meters above the ground.
Effects of Various Agroecosystem Landscape on Arthropod Diversity: A Study Case in Kemiri Village, Jember, Indonesia: Effects Agroecosystem Landscape on Arthropod Diversity Agung Sih Kurnianto; Nilasari Dewi; Ahmad Ilham Tanzil; Wildan Muhlison; Nur Laila Magvira; Luhur Septiadi
Journal of Tropical Life Science Vol. 12 No. 3 (2022)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.12.03.14

Abstract

Agroecosystem landscapes have been studied extensively and it is known that there is  a relationship between the spatial structure and the ecological processes. The composition of arthropods in the agroecosystem shows population differences that are closely related to the location. This study aims to isolate and analyze the interactions  of arthropods and landscape structures and features of different agroecosystems  landscapes in Kemiri, Jember, Indonesia. The plot method (20x20 m and 1x1 m dimension) was carried out to observe seedling, sapling, and tree (seedling h = 0-1.5  m, sapling h ≥ 1.5 m, tree D > 20 cm). The trees' species name, distance, number, and  DBH were collected. Arthropods were sampled using PFT and SN methods. A vial  (d=5 cm) was used for PFT, and SN was applied at a distance of 1x10 meters with 3  repetitions. Plants with the role of weeds in monoculture dominate (TA=45). Drosophilidae is the most recorded family in monoculture. Polyculture and agroforestry systems increased the diversity of arthropods in the vegetation, and Formicidae predominated by PFT (TA=28% and 81%, respectively). PCA shows the role of detrivores is  mostly found in agroforestry, and herbivores dominate the monoculture. CCA shows that detrivore association in agroforestry is influenced by humidity, and herbivores  are particularly interested in monoculture systems that provide high light, temperature, and wind intensity.
Co-Authors Agung Sih Kurnianto Ahmad Ilham Tanzil Hari Purnomo Nilasari Dewi Nur Laila Magvira Puji Firmansyah Wildan Muhlison, Wildan