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LAJU PERTUMBUHAN POPULASI Brachionus plicatilis O. F. Muller DENGAN PEMBERIAN KOTORAN AYAM KAMPUNG (Gallus varius L.) DAN AYAM BROILER (Gallus demostica L.) PADA MEDIA KOMBINASI PUPUK UREA DAN TSP Surya Darmawansyah; Arlen Hanel John; Mayang Sari Yeanny
Saintia Biologi Vol 1, No 3 (2013)
Publisher : Saintia Biologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (207.017 KB)

The relationship between growth rate of Brachionus plicatilis O. F. Muller population and feeding that contain addition of local chicken manure (Gallus varius L.) and broiler chicken’s (Gallus domestica L.) in urea and triple superphosphat (TSP) was conducted on September 2012 in Animal Systematic Laboratory, Biology Department, Mathematics and Sains Faculty, Sumatera Utara University. This research used complete randomized design (CRD) with 4 treatments chicken manure, that is M1 (300 mg/2 L local), M2 (400 mg/2 L local), M3 (300 mg/2 L broiler) and M4 (400/2 L broiler), with 6 times repeated and 8 times observation during 16 days. The result showed that the growth rate of B. plicatilis the highest on medium M4 is 8.492 indx2x10-3xday-1 and have the lowest on the medium M1 is 8.386 indx2x10-3xday-1. These showed that using broiler chicken’s manure is better than local chicken’s manure. Keywords : Brachionus plicatilis, growth rate, broiler chicken manure, local chicken manure

Monitoring of The Palm Oil Plantation Ecosystem Based on Land Macrofauna Diversity Arlen Hanel John
International Journal of Ecophysiology Vol. 2 No. 1 (2020): International Journal of Ecophysiology
Publisher : Talenta Publisher

Oil palm plantations of PT. Supra Matra Abadi has used palm oil mill effluent to the plantation area as fertilizer (Land Application) to part of its plantation area. The difference in land use and management in the plantation area also determines the presence, both species, density, diversity index value, and soil macrofauna uniformity index. Soil macrofauna plays a role in maintaining the balance of the soil ecosystem. This research has been conducted at PT. Supra Matra Abadi, located in Kebun Panji Bay, Kampung Rakyat District, Labuhanbatu Selatan Regency, North Sumatra Province in May-July 2018. This research was conducted to determine the presence of species, population density, diversity index values, and uniformity of soil macrofauna on oil palm plantations. Determination of the sampling point is done by the Purposive Random Sampling method, soil macrofauna sampling using the Quadratic and Hand Sorting methods. There are 15 species of soil macrofauna which are grouped into 2 phyla, 5 classes, 9 orders, 12 families, and 15 genera. The highest density value was found in the area of plantations that were not given liquid palm oil mill effluent as fertilizer (Non Land Application) of 282.15 ind / m2 and the highest diversity index value was found in the area of oil palm plantations which were fertilized with palm oil mill liquid waste to land area (Land Application) which shows that the condition of the oil palm plantation ecosystem which is fertilized with palm oil mill effluent (Land Application) can support the life, diversity, and uniformity of soil macrofauna.

Behavior Of Individual Orangutan Sumatera (Pongo Abelii) Before Direintroduction At The Orangutan Quarantine Station, Sibolangit, Deli Serdang, North Sumatera Arlen Hanel John
International Journal of Ecophysiology Vol. 2 No. 02 (2020): International Journal of Ecophysiology
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/ijoep.v2i02.4677

The individual behavior of orangutan (Pongoabeli) before reintroduction to the wild was studied from March to June 2012 in orangutan quarantine station Batumbelin Sibolangit, Deli Serdang. The research used focal animal sampling method, at the same time the data recording was taken using instantenous method. The result showed that solitary behavior (39.34%) which was dominated by feeding (20.60%). The second highest (35.31%) was resting which was dominating by sitting (16.87%) followed by moving behavior (13.58%) which mostly was branching (7.54%). The least activity was competitive behavior (1.88%) which was dominated by streaking down each other (0.82%). The result also indicated an abnormal behavior among 3 orangutans observed such as eating their own feces.

Community Structure and Distribution of Coleoptera Soil IPM and Non IPM Upland Vegetable Agricultural Areas in Two Villages in Kabanjahe Arlen Hanel John
International Journal of Ecophysiology Vol. 3 No. 1 (2021): International Journal of Ecophysiology
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/ijoep.v3i1.10016

The concept of Integrated Pest Management (IPM) is an effort developed by the government in order to reduce the use of pesticides in the agricultural sector. In the development of agriculture in Kabanjahe, both Non-IPM (Non Integrated Pest Management) and IPM (Integrated Pest Management), research is needed to determine the community structure and distribution of soil fauna, including soil coleoptera, and to determine the effect of soil physical and chemical factors on soil coleoptera community structure in the highland vegetable farming area of Kabanjahe district. Karo Regency. Determination of sampling points in this study was carried out using the "purposive random sampling" method, in two agricultural areas, in two villages, namely Sumber Mufakat and Gung Negri, Non-IPM agricultural land areas and IPM agricultural areas. While the active coleoptera sampling of the soil surface was carried out using the Pit Fall Trap method, and the Quadratic and Hand Sorting methods for Coleoptera that live in the soil. The results showed that the number of types and population density of coleopteran soil was more / higher in the area. IPM agriculture. The highest density and relative density values in the research area were the genus Callosoma for the IPM and Non-IPM lands of Sumber Mufakat Village and the IPM of Gung Negri Village, while for the Gung Negri Non-IPM land the genus Scapidium and the genus Tenebrio.

Individual Behavior Of Female Sumatran Orangutan (Pongo abelii L.) With Management System In Siantar Zoo Arlen Hanel John
International Journal of Ecophysiology Vol. 3 No. 1 (2021): International Journal of Ecophysiology
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/ijoep.v3i1.10017

The Sumatran orangutan (Pongo abelii) is an endangered species due to the destruction of its forest habitat and deforestation. Various conservation efforts have been made to prevent the orangutan extinction,such as ex-situ conservation in Siantar Zoo.This study aims to determine the behavior of individual female orangutans at Siantar Zoo with a management system. The observatuons was conducted for 14 days in August with the focal animal sampling method and data recorded using the Instantaneous method.The results showed the overall frequency of individual female orangutan behavior were resting (40%), eating (35%), moving (14%), special (6%), self care (4%) and pooping (1%). The behavior of individual female orangutans is influenced by the number of visitors, namely the resting behavior of the crowded visitor category 39,15%, medium category 41.81% and quiet 39.68%. The eating behavior of the crowded visitor category is 37.80%, the medium category is 33.56% and the quiet category is 34.68%. The moving behavior in the quiet, medium and crowded categories is 14.18%; 12.85%; 11.67%. The specific behavior for the quiet, medium and crowded categories was 6.19%; 5.55%; 5.59%. Self-care behavior in the crowded visitor category is 4.34%, the medium category is 4.60% and the quiet category is 4.01%. The behavior of pooping in the crowded category is 1.45%, in the medium category is 1.62% and in the quiet category is 1.27%.The female orangutan management system at Siantar Zoo is analyzed as having a fairly good and regular system. The cage management has met the minimum requirements and the female orangutan has a good body weight and has never been infected with a serious disease.

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