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Jurnal Biologi Universitas Andalas
Published by Universitas Andalas
ISSN : -     EISSN : 23032162     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
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Articles 2 Documents
 1 
Search results for , issue "Vol 10 No 2 (2022)" : 2 Documents clear
Ants (Hymenoptera: Formicidae) at Biology Laboratory of Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang Anggraini, Indah; Nugraha, Fitra Arya Dwi; Razak, Abdul; Satria, Rijal
Jurnal Biologi Universitas Andalas Vol 10 No 2 (2022)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.10.2.47-52.2022

Abstract

The ants are one of the insects that dominate all ecosystems, it biomass reaching more than 30% in tropical ecosystems. The ants plays positive or negative roles in ecosystem. The negative role of ants is as a household pests that can have a negative impact on humans. The loss caused by pest ants is causing contamination of food as well as contamination of sterile equipment in hospitals and laboratories. The ant stinging will cause allergies and also become disease vectors due they association with several pathogenic microorganisms. This study was conducted at the Biology Laboratory, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, Air Tawar, West Sumatra, from October to November 2021. The ants were collected inside and outside of the laboratory by using the baited trap (peanut butter, honey, and sardines) and hand collection methods. A total of 419 individual ants were found belonging to eight species and three subfamilies. The highest number of individual found in Tapinoma melanocephalum.
Composition And Structure Of Undergrowth Habitats Of Flora Rafflesia arnoldii R.Br. In The Forests Of Bukik Pinang Mancuang, Kamang Mudiak, Agam Sefmaliza, Rizka; Chairul, Chairul
Jurnal Biologi Universitas Andalas Vol 10 No 2 (2022)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.10.2.42-46.2022

Abstract

Vegetation analysis is a way of studying the composition of species and the structure of the vegetation. The objective research about understorey vegetation analysis in the flora habitat of Rafflesia arnoldii in Bukit Pinang Mancuang Forest, Kamang Mudiak, Agam was to determine the composition and structure in the flora habitat of Rafflesia arnoldii in Bukit Pinang Mancuang Forest, Kamang Mudiak, Agam. Vegetation analysis was carried out by using the quadratic plot method with a size of 2 x 2 m. There were 6 plots have been made and species identification was carried out at the Andalas University Herbarium. According to the observation result, there are 32 species discovered consisting of 601 individuals with 19 families. The dominant families are Rubiaceae (34.61%) and Utricaceae (32.61%). The importance value index of Coffea canephora was obtained (51.28%). The plant diversity index in this area was classified as moderate (H'=2.58). Based on the analysis conveyed, it can be concluded that the Rubiaceae and Urticaceae families are adequate forest and life support for Rafflesia arnoldii habitat. It is recommended that the local government designated the forest as a conservation area in order to preserve the existence of Rafflesia arnoldii and its habitat.

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