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ENVIRONMENTAL FACTORS AFFECTING PRODUCTIVITY OF TWO INDONESIAN VARIETIES OF BLACK PEPPER (Piper nigrum L.) Yudiyanto, Yudiyanto; Rizali, Akhmad; Munif, Abdul; Setiadi, Dede; Qayim, Ibnul
AGRIVITA, Journal of Agricultural Science Vol 36, No 3 (2014)
Publisher : Faculty of Agriculture University of Brawijaya and Indonesian Agronomic Assossiation

Show Abstract | Download Original | Original Source | Check in Google Scholar

Black pepper plantation area in Lampung province (the biggest producer area within Indonesia) has decreased from time to time, which might be related to unfavourable environmental condition. The aim of this study was to assess which environmental factors are positively or negatively correlated with productivity in particular yield of two local varieties of black pepper plant (Natar 1 and Natar 2) in Lampung province.Â Two observational studies were carried out in the present study i.e. phenological development and productivity of black pepper productivity in related to various environmental factors. Our results showed that productivity of two varieties were significantly affected rainfall, light intensity and micro humidity. Dry matter yield was positively correlated with rainfall, both in Natar 1 and Natar 2. It was concluded that among environmental factors affecting productivity of black pepper, rainfall intensity was the most influencing factor with a positive relationship with the productivity.Keywords: Black pepper, climate, cultivar, environment, Indonesia

Kajian Arsitektur Pohon dalam Upaya Konservasi Air dan Tanah: Studi Kasus Altingiaexcelsa dan Schima wallichii di Taman Nasional G. Gede Pangrango Nuraeni, Eni; Setiadi, Dede; Widyatmoko, Didik
JURNAL BIOLOGI INDONESIA Vol 10, No 1 (2014): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Tree architectural model is basically a tree construction as a result of meristematic growth pattern. Tree architectureis closely associated with water and soil components, i.e. rainfall, throughfall, stem flow, infiltration, surface run-off,and erosion. For Altingia excelsa (Rasamala) plots, the results showed that the daily average of the rainfall intensityobserved was 9.67 mm, stem flow 0.03 mm, canopy throughfall 5.43 mm, infiltration 0.51 ml/mm2/second,surface run-off 3.45 mm, and erosion 5.66 kg/m2. For Schima wallichii (Puspa), the daily average of rainfall was9.67 mm, stem flow 0.04 mm, canopy throughfall 4.02 mm, infiltration 0.49 ml/mm2/second, surface run-off 8.18mm, and erosion 12.71 kg/m2. Compared to A. excelsa, S. wallichii significantly had larger values in someparameters measured, i.e. stem flow, surface run-off, and erosion, indicating that on land sopes of 70% of theMount Gede Pangrango National Park, individual plants of S. wallichii seemed to be well adapted. However,individuals of A. excelsa possessed a more spreadly branching model, larger vertical width, denser canopy, andskewed bark channels capable for slowing down the stem flow and canopy throughfall. Consequently plants of A.excelsa would generally be able to hold and conserve water and soil better than S. wallichii plants.Keywords: Tree architectural model, stem flow, throughfall, surface run-off, infiltration, erosion

Kajian Pemilihan Jenis Tumbuhan Untuk Restorasi Hutan Berdasarkan Beberapa Parameter Fotosintesis Ahmad, Tinia Leyli Shofia; Setiadi, Dede; Widyatmoko, Didik
JURNAL BIOLOGI INDONESIA Vol 9, No 2 (2013): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Forest restoration is a process of ecosystem conditioning (soil, vegetation, and wildlife) in order to achieve similarpatterns and profiles to previous conditions and status before the ecosystem was disturbed, both in terms of speciescomposition and structure, and habitat functions. Restoration is a crucial part to maximize the conservation values ofbiodiversity and ecosystem functions. Eight different native plant species were assessed in this research while the photosyntheticparameters studied included the total chlorophyll content, carbohydrate content, CO2 sequestration capacity,leaf weight, leaf number, leaf area and leaf water content. Spectrophotometer was operated to analyse chlorophyllcontent, the Somogyi-Nelson method was used to calculate carbohydrate content, and leaf area was measuredusing the leaf area meter. The research results using the principal component analysis showed that each type of theplant species used for the restoration (2 years old after planting) had different characteristics in terms of photosyntheticparameters studied. Dacrycarpus imbricatus and Syzygium lineatum both had the highest carbohydrate contentsand the best abilities to absorb CO2. Sloanea sigun, Alstonia scholaris, Manglietia glauca, and Castanopsis argentea hadhigher total chlorophyll contents than others, while Altingia excelsa, M. glauca, A. scholaris, and Schima wallichii hadhigher water contents. A. scholaris, M. glauca, and S. sigun had heavier leaf weights. In contrast, M. glauca possessedthe widest leaves amongst the species observed.Keywords: forest restoration, photosynthetic parameters, native species

POLA PENYEBARAN, KELIMPAHAN DAN ASOSIASI BAMBU PADA KOMUNITAS TUMBUHAN DI TAMAN WISATA ALAM GUNUNG BAUNG JAWA TIMUR [Distribution Pattern, Association and Abundance of Bamboo in Plants Community in Mount Baung Natural Tourism Park East Java] Sofiah, Siti; Setiadi, Dede; Widyatmoko, Didik
BERITA BIOLOGI Vol 12, No 2 (2013)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

One of bamboo forests which are located in a conservation area in Indonesia is Mount Baung Natural Tourism Park, East Java. Bambooforest is a uniqueness/distinctiveness in this area. Study of bamboo ecology in Mount Baung Natural Tourism Park was very important inconservation purposes. The objectives of the research were to assess the distribution pattern, association and abundance of bamboo species at Mount Baung Natural Tourism Park. A systematic quadrat method was used in this study. The distribution pattern of bamboo was calculated using Morisita Index by calculating the Chi-square formula while plant association was calculated using the contingency table. The results indicated that: (1) there were 11 plant species (bearing the Importance Value Index >10%) associated with bamboo, and showing a clumped distribution pattern, (2) bamboo supported the highest importance value, in which Bambusa blumeana was the dominant. The population structure of bamboo in this area showed pre-reproductive phase, indicating the dominance of young stage (D clump < 5m).

Pengetahuan Fauna (Etnozoologi) Masyarakat Tengger di Bromo Tengger Semeru Jawa Timur Batoro, Jati; Setiadi, Dede; Chikmawati, Tatik; Purwanto, Y.
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 17, No 1 (2012): February 2012
Publisher : Universitas Atma Jaya Yogyakarta

Penelitian ini bertujuan mempelajari pengetahuan tentang pemanfaatan hewan berpotensi, pelestarian lingkungan oleh masyarakat Tengger. Mempelajari interaksi antara masyarakat dan lingkungannya dan aspek praktek, persepsi serta representasinya. Metode penelitian digunakan survei exploratif meliputi inventarisasi jenis hewan di kandang, lingkungan rumah, wilayah konservasi hutan Taman Nasional Bromo Tengger Semeru (TN.BTS) meliputi nama lokal dan nama ilmiah. Metode dengan teknik ethnodirect, sampling meliputi wawancara langsung, semistruktural terhadap penduduk, pemangku adat, dukun serta pengumpulan informasi dengan pendekatan bersifat partisipasif (participatory ethnobotanical appraisal, PEA). Jenis hewan peliharaan mempunyai nilai ekonomi dapat dipergunakan sumber bahan pangan bagi masyarakat Tengger. Pengetahuan keanekaragaman satwa liar dan binatang yang dimanfaatkan masyarakat Tengger meliputi 110 jenis, hanya sekitar 6% saja yang sering digunakan dalam kehidupan sehari-hari rumah tangganya, diantaranya adalah untuk bahan pangan, ritual, obat-obatan, dan lain-lainnya.

Etnoekologi Masyarakat Samin Kudus Jawa Tengah Jumari, Jumari; Setiadi, Dede; Purwanto, Y; Guhardja, Edi
Bioma : Berkala Ilmiah Biologi Vol. 14, No.1, Tahun 2012
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

The study of the ethnoecology of Samin Society in Kudus been conducted in March 2011 to August 2011. The aim of this study was to review and document local knowledge of of Samin Society about their views of the environment. The location is Larikrejo and Kaliyoso villages, Undaan District, Regency of Kudus. Data collection techniques with direct field observation, open interviews (open ended), structured interviews with key informants, and focus group discussions (FGD). Results of research on local resource management in communities samin illustrated on describtif phenomenology. Theirs traditional knowledge about the environment is reflected in the form of land use management systems. Environmental unit and production activities such as: rice fields, yards, dry field, swamps, embung and rivers. Samin community interaction with the environment is very strong, like wong (humans) with sandang pangan (food and clothing), or like living with a livelihood. Society's view of land interests change with the change of environmental conditions and their knowledge level.Â Key word: Ethoecology, local knowledge, Samin Society, view of invironment, environmental unit

Struktur Komunitas Lamun di Perairan Pesisir Manokwari Lefaan, Paskalina Th.; Setiadi, Dede; Djokosetiyanto, D.
Maspari Journal : Marine Science Research Vol 5, No 2 (2013): Edisi Juli
Publisher : UNIVERSITAS SRIWIJAYA

The study was done from July to October 2007 by line transect method, plots, and exploration survey. There were eight species found in this study were grouped into pioneer group (Cymodocea rotundata, Halodule pinifolia, Halodule uninervis, Halophila ovalis, Syringodium isoetifolium) and climax (Cymodocea serrulata, Enhalus acoroides, Thalassia hemprichii), with mixed vegetations. Density, covering percentage and biomass in Andai and Wosi were dominated by H. pinifolia; Rendani and Tj. Mangewa were dominated by T. hemprichii; and Briosi were dominated by C. rotundata and T. hemprichii. INP in Andai and Wosi (dominated by H. pinifolia) were 290.005 and 243.767, respectively; Rendani and Tj. Mangewa (dominated by T. hemprichii) were 101.725 and 135.139, respectively; and Briosi (dominated by C. rotundata) was 120.146. The highest ratio of above and below biomass was found in Andai (7.831) and the lowest was found in Briosi (2.103). Seagrass community in Rendani, Tj. Mangewa and Briosi had higher biodiversity index than Wosi and Andai (0.109 and 0.015). On the other hand, Rendani, Tj. Mangewa, and Briosi had lower dominance index (0.262, 0.421 and 0.338, respectively), compared to Andai (0.989) and Wosi (0.889). Level of similarity among seagrass community in Rendani, Briosi and Tj. Mangewa was categorized as very high (92.31 %), while Andai and Wosi was high (66.67 %).Keywords : seagrass community, pioneer, climax, mixed vegetation, ManokwariMaspari Journal, 2013, 5 (2), 69-81

KAJIAN ARSITEKTUR POHON DALAM UPAYA KONSERVASI AIR DAN TANAH: STUDI KASUS ALTINGIAEXCELSA DAN SCHIMA WALLICHII DI TAMAN NASIONAL G. GEDE PANGRANGO Nuraeni, Eni; Setiadi, Dede; Widyatmoko, Didik
JURNAL BIOLOGI INDONESIA Vol 10, No 1 (2014): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v10i1.325

Tree architectural model is basically a tree construction as a result of meristematic growth pattern. Tree architectureis closely associated with water and soil components, i.e. rainfall, throughfall, stem flow, infiltration, surface run-off,and erosion. For Altingia excelsa (Rasamala) plots, the results showed that the daily average of the rainfall intensityobserved was 9.67 mm, stem flow 0.03 mm, canopy throughfall 5.43 mm, infiltration 0.51 ml/mm2/second,surface run-off 3.45 mm, and erosion 5.66 kg/m2. For Schima wallichii (Puspa), the daily average of rainfall was9.67 mm, stem flow 0.04 mm, canopy throughfall 4.02 mm, infiltration 0.49 ml/mm2/second, surface run-off 8.18mm, and erosion 12.71 kg/m2. Compared to A. excelsa, S. wallichii significantly had larger values in someparameters measured, i.e. stem flow, surface run-off, and erosion, indicating that on land sopes of 70% of theMount Gede Pangrango National Park, individual plants of S. wallichii seemed to be well adapted. However,individuals of A. excelsa possessed a more spreadly branching model, larger vertical width, denser canopy, andskewed bark channels capable for slowing down the stem flow and canopy throughfall. Consequently plants of A.excelsa would generally be able to hold and conserve water and soil better than S. wallichii plants.Keywords: Tree architectural model, stem flow, throughfall, surface run-off, infiltration, erosion

KAJIAN PEMILIHAN JENIS TUMBUHAN UNTUK RESTORASI HUTAN BERDASARKAN BEBERAPA PARAMETER FOTOSINTESIS Ahmad, Tinia Leyli Shofia; Setiadi, Dede; Widyatmoko, Didik
JURNAL BIOLOGI INDONESIA Vol 9, No 2 (2013): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v9i2.169

Forest restoration is a process of ecosystem conditioning (soil, vegetation, and wildlife) in order to achieve similarpatterns and profiles to previous conditions and status before the ecosystem was disturbed, both in terms of speciescomposition and structure, and habitat functions. Restoration is a crucial part to maximize the conservation values ofbiodiversity and ecosystem functions. Eight different native plant species were assessed in this research while the photosyntheticparameters studied included the total chlorophyll content, carbohydrate content, CO2 sequestration capacity,leaf weight, leaf number, leaf area and leaf water content. Spectrophotometer was operated to analyse chlorophyllcontent, the Somogyi-Nelson method was used to calculate carbohydrate content, and leaf area was measuredusing the leaf area meter. The research results using the principal component analysis showed that each type of theplant species used for the restoration (2 years old after planting) had different characteristics in terms of photosyntheticparameters studied. Dacrycarpus imbricatus and Syzygium lineatum both had the highest carbohydrate contentsand the best abilities to absorb CO2. Sloanea sigun, Alstonia scholaris, Manglietia glauca, and Castanopsis argentea hadhigher total chlorophyll contents than others, while Altingia excelsa, M. glauca, A. scholaris, and Schima wallichii hadhigher water contents. A. scholaris, M. glauca, and S. sigun had heavier leaf weights. In contrast, M. glauca possessedthe widest leaves amongst the species observed.Keywords: forest restoration, photosynthetic parameters, native species

Habitat Preferences and Distribution of the Freshwater Shrimps of the Genus Caridina (Crustacea: Decapoda: Atyidae) in Lake Lindu, Sulawesi, Indonesia Annawaty Annawaty; Daisy Wowor; Achmad Farajallah; Dede Setiadi; Bambang Suryobroto
HAYATI Journal of Biosciences Vol. 23 No. 2 (2016): April 2016
Publisher : Bogor Agricultural University, Indonesia

The objectives of this study were to reveal ecological preferences and distribution of all species of Caridina found in Lake Lindu and their catchment area. Specimens from 39 sampling sites were caught using tray net and hand net. There are three species of Caridina found in the lake system, i.e. Caridina linduensis, Caridina kaili and Caridina dali. There is no overlapping distribution among the species. Caridina kaili is a true riverine species and it is never encountered sympatric with C. dali nor C. linduensis. This species is abundant in streams and ditches with moderate flow running water and gravel–cobble substrate. It is mainly spread within streams west to the lake. Both C. daliand C. linduensis can be found in the lake and streams with very slow current to almost stagnant water, muddy sand substrate and associated with roots of water plants and leaf litter. However, C. dali is never occurred together with C. linduensis and they are less abundant compare to C. kaili. Distribution of Caridina spp. in Lake Lindu is probably affected by the temperature of their habitats and the occurrence of introduced fish such as Mozambique tilapia (Oreochromis mossambicus), common carp (Cyprinus carpio), and an alien riceland prawn (Macrobrachium lanchesteri). These introduced and alien species can have the potency to become predators or competitors for the Caridina spp. It is also the first record for M. lanchesteri present in Lake Lindu.

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