Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

P-Index

This Author published in this journals

All Journal Buletin Kebun Raya BERITA BIOLOGI JURNAL BIOLOGI INDONESIA Biosaintifika: Journal of Biology & Biology Education Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek)

DIDIK WIDYATMOKO

Pusat Konservasi Tumbuhan Kebun Raya Bogor, Lembaga Ilmu Pengetahuan Indonesia

Author-ID : 416772

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

Published : 24 Documents Claim Missing Document

Claim Missing Document

Articles

Title

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).

INTERSPECIFIC ASSOCIATION PATTERNS AND EDAPHlC FACTORS INFLUENCES: A CASE STUDY OF Orania regalis Zippelius IN WAIGEO ISLAND, WEST PAPUA [Pola Asosiasi Antarspesies dan Pengaruh Faktor Edafik: Studi Kasus Orania regalis Zippelius di Pulau Waigeo, Papua Barat] Widyatmoko, Didik
BERITA BIOLOGI Vol 9, No 5 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Tropical plant community ecology is often assumed to be driven largely by stochastic disturbance, regeneration and demographic processes. The influence and importance of physical and biotic components are rarely taken into account. Consequently, scientific findings in this field are very limited. Tropical soils are in fact more diverse than usually is recognized. This study was conducted to test hypotheses about the importance and influence of edaphic parameters and association patterns in determining the abundance and distribution of the Papuasian palm Orania regalis Zippelius and its co-occurrence with other plant species. The results showed that a number of interrelating edaphic factors, in combination, appeared to explain the abundance and occurrence of O. regalis. This palm showed a preference for wet, but well-drained soils, with high magnesium (Mg ) and calcium (Ca *)contents. The three largest colonies occurred in sites where Mg * content was high. On the other hand, high alkaline concentrations corresponded to the absence of the palm. Eight of 14 tropical plant species were positively associated while six species were negatively associated with O. regalis. For five species (Licuala gramnifolia, Tabernaemontana aurantiaca, Intsia bijuga, Vatica rassak,and Palaquium obovatum), the association with O. regalis was strong, as indicated by their Ochiai indices (>0.5).The palms L. gramnifolia and Sommieria leucophylla appeared to have similar ecological preferences and habitat requirements with O.regalis. The palm tended to occupy sites with lower C/N ratios and all known colonies occurred in habitats with average C/N values of less than 10. Based on the r-squared values, exchangeable Mg* appeared to have more influence on plant density and frequency than on basal area and canopy circle area. The exchangeable Ca * and C/N values showed a similar pattern to Mg contents.However, K ., Na ., Al and H contents did not show significant relationships with the palm abundance parameters. These findings suggest that edaphic variables and plant association patterns are important determinants of the abundance and occurrence of tropical plant species.

Co-Authors Abywijaya, Ilham Kurnia Abywijaya, Ilham Kurnia Afrianto, Whisnu Febry Afrianto, Whisnu Febry Agus Hikmat Dede Setiadi Dodo Dodo, Dodo Eni Nuraeni Irzal Fakhrozi, Irzal Lelono, Arthur A. Lelono, Arthur A. Siti Sofiah Tinia Leyli Shofia Ahmad, Tinia Leyli Shofia Wiguna Rahman Yayan Wahyu Candra Kusuma

Title Search

Found 2 Documents Search Journal : BERITA BIOLOGI

Abstract

Abstract

Title

Found 2 Documents
Search
Journal : BERITA BIOLOGI