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All Journal Jurnal Statistika dan Matematika (Statmat) International Journal of Social and Management Studies (IJOSMAS)
Iskandar Zulkarnaen
Universitas Pamulang
Religion Humanities Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Other

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MARGALEF INDEX, SIMPSON INDEX AND SHANNON-WEAIVER INDEX CALCULATION FOR DIVERSITY AND ABUDANCE OF BEETLE IN TROPICAL FOREST Ibnu Sina; Iskandar Zulkarnaen
STATMAT : JURNAL STATISTIKA DAN MATEMATIKA Vol 1, No 2 (2019)
Publisher : Math Program, Math and Science faculty, Pamulang University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (737.97 KB) | DOI: 10.32493/sm.v1i2.2948

Abstract

Field sampling was conducted from July to August 2019 to determine the diversity and abundance of beetle fauna at Gayo Lues Forest, Takengon, Central Aceh. The study was conducted at two sites namely trail I and trail II. The beetles were sampled using 2 light traps, 2 malaise traps and 20 pitfall traps. Total of 219 beetle specimens comprising of 67 species from 24 families were collected. Light trap collected the most number of beetles (N=117) and Margalef index showed that the most abundant beetle was collected by light trap (Margalef index, 27.551). Shannon-Weiner index shows that the most specious beetle was caught by light traps (4.399). The results showed that the most efficient trap was light trapping. Trail I has the most abundance (Margalef Index: 18.572) but trail II was the most specious (Shannon Weiner Index: 4.176) beetle fauna, whereas trail II has the least abundance (Margalef Index: 17.295) and Campsite has least diverse (Shannon Weiner Index: 3.769).The most abundant family caught was Staphylinidae (Margalef index : 2.667) and specious beetle family caught was the Chrysomelida (Shannon Weiner : 1.846) followed by the ground beetle family Scarabaeidae  (Shannon Weiver:1.828). Result of this findings showed that Gayo Lues Forest is an undisturbed forests and has been preserved well.Keywords :  Beetle, Diversity, Abundance, Takengon, Gayo
The Influence of Leadership and Work Motivation on Employee Performance in the Non-Medical Section of Buah Hati Hospital, Ciputat, South Tangerang Syarifah Ida Farida; Iskandar Zulkarnaen; Andriyan Hidayat
International Journal of Social and Management Studies Vol. 3 No. 3 (2022): June 2022
Publisher : IJOSMAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5555/ijosmas.v3i3.211

Abstract

This study aims to examine the effect of leadership and work motivation on employee performance. Data were collected using a Likert scale questionnaire in March 2021 from 64 respondents, the sample objects were employees of the non-medical section of the Ciputat Fruit Hospital, South Tangerang, because they had characteristics that matched the variables to be studied. The collected data was tested by multiple regression method using SPSS 24.00. The result of this research is that leadership has no significant effect on employee performance. Work motivation has a significant effect on employee performance. Leadership and work motivation together have a significant effect on employee performance.
Co-Authors Andriyan Hidayat Ibnu Sina Syarifah Ida Farida