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Journal : Jurnal Pendidikan Matematika dan IPA

KOMPOSISI DAN STRUKTUR HUTAN RIPARIAN SEBAGAI PENAHAN GELOMBANG DI DESA SEMAYANG KABUPATEN KUTAI KARTANEGARA Daryadi A, Muhammad; Hendra, Medi; Hariani, Nova
Jurnal Pendidikan Matematika dan IPA Vol 10, No 1 (2019): Januari 2019
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (847.952 KB) | DOI: 10.26418/jpmipa.v10i1.27515

Abstract

AbstractThis study aimed to determine the composition and structure of Semayang forest and the Importance Value Index (IVI) of riparian forest in its role of reducing the wave rate. The method used is multilevel plot method of 20x20 m for sampling of tree level, 5x5 m for sapling level and 2x2 m for seedling level. The result showed that the highest Importance Value Index at tree level was dominated by 3 species, they were L. javanicum (101,663), M. speciosa (76,201) and G. renghas (65,962). At sapling level dominated by P. indica (102,990). At seedling level dominated by M. pigra (95,004)andP. brevistipitata (70,109). In addition, Semayang riparian forest has an ecological function as a wave retaining. It can be seen based on the vegetation density and horizontal structure of species that make up the forest. Vegetation density is predicted to reduce the rate of Semayang lake waves that occur during flood season. Keywords: Composition and Structure, Riparian Forest, Semayang Lake. 
STRUKTUR KOMUNITAS PLANKTON PADA TIGA ZONA DENGAN VARIASI SALINITAS DI LABUAN CERMIN KECAMATAN BIDUK-BIDUK, KAB. BERAU, KALIMANTAN TIMUR B, Dian Aspiyani; Hariani, Nova; Hendra, Medi
Jurnal Pendidikan Matematika dan IPA Vol 9, No 1 (2018): Januari 2018
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (253.283 KB) | DOI: 10.26418/jpmipa.v9i1.23700

Abstract

The aim of this study is to know about the quality of the waters from the structure of community and level of diversity plankton on three zones vertically with variety salinity on labuan cermin, at Biduk-biduk, Kalimantan Timur. The sample is taken by used method purposive sampling. The data acquired and showed in profusion plankton form, index abundance, index diversity, index evenness, and index dominance. The plankton has found during the research is 79 genera classified in 46 family and 13 class. The index abundant is on station A is the highest than the other station. On the average of index diversity of station A higher than station B and C in value about 2,3026. Index evenness revolve from 0,1870 to 0,8281. Index dominance revolve about 0,1171 to 0,7885. Keywords: Estuary, plankton, Labuan Cermin, diversity.
STRUKTUR KOMUNITAS PLANKTON PERMUKAAN PADA DANAU LABUAN CERMIN KEC. BIDUK-BIDUK, KAB. BERAU Arum, Elis Seftia; Hariani, Nova; Hendra, Medi
Jurnal Pendidikan Matematika dan IPA Vol 9, No 1 (2018): Januari 2018
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (242.297 KB) | DOI: 10.26418/jpmipa.v9i1.23697

Abstract

This study aims to determine (physico-chemical) parameters of water and also community structure of plankton surface in natural tourism Labuan Cermin Biduk-Biduk, Berau, Kalimantan Timur. This study used Purposive Sampling method. Data obtained shows in plankton abundance, diversity index, evenness index and dominance index. The result of study showed that range of temperature between 24,04 oC -26,88 oC, range of salinity between 0.25-0.87o/oowhich classified in freshwater-brackish water, range of power flow between 1.121-2.930 m/s which classified in moderate level, the average pH between 6,76-7,48 which classified in neutral level, range of TDS between  514-788 mg/L which classified in normal level, respectively. Plankton sample showed 27 classes including of 22 classes of phytoplankton with 57 genera and 5 classes of zooplankton with 10 genera. The highest total plankton abundances of  35917 ind/L is in Station A and the lowest total plankton abundances of 8330 ind/L is in Station F. Keywords: Plankton, Labuan Cermin,  Diversity.
KEANEKARAGAMAN TUMBUHAN OBAT DI SUKU MANGGARAI KECAMATAN NDOSO KABUPATEN MANGGARAI BARAT NUSA TENGGARA TIMUR (NTT) Jamun, Rosalia; Hendra, Medi; Hariani, Nova
Jurnal Pendidikan Matematika dan IPA Vol 11, No 2 (2020): Juli 2020
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jpmipa.v11i2.40810

Abstract

The Manggarai tribe who lives in the mountainous area of Ndoso Subdistrict is one of the tribes that still preserve the traditional culture to use natural resources, especially for plants as traditional medicines. Inheritance of knowledge about medicinal plants is very limited because of the media to deliver the information rely on the communication from parents to children and grandchildren to the generations in the family. Therefore, it is necessary to study about ethnobotany of medicinal plants in this community and determine the types of plants used to make traditional medicine. The methods of this research are the exploratory survey method and the PRA (Participatory Rural Appraisal) approach. It is an assessment process that has an orientation to the involvement of the community in this research. The few steps in this study including survey, observation, interview, documentation, collection, identification and preservation by herbarium. There are 89 species of medicinal plants referring to 46 families of medicinal plants that are commonly used. The Manggarai people use wild plants found in the field, forest, and riverbank, and some are even deliberately cultivated. The method of processing medicinal plants commonly used is by boiled, chewed and patched, scraped, twisted, crushed, and without being processed.AbstrakSuku Manggarai yang bermukim pada kawasan pegunungan di Kecamatan Ndoso merupakan salah satu suku yang masih mempertahankan adat dan tradisi dalam penggunaan sumber daya alam khususnya tumbuhan sebagai obat tradisional. Pewarisan pengetahuan tentang tumbuhan obat tersebut dilakukan  terbatas penyampaian lisan dari orang tua kepada anak dan cucu secara turun temurun dalam keluarga. Oleh karena itu perlu dilakukan penelitian tentang studi etnobotani tumbuhan obat oleh masyarakat Suku Manggarai yang bermukim pada kawasan pegunungan di Kecamatan Ndoso yang bertujuan untuk mengetahui jenis tumbuhan apa saja yang digunakan, bagian tumbuhan yang digunakan dan untuk mengetahui bagaimana cara pengolahan tumbuhan obat tradisional. Metode yang digunakan adalah dengan metode survey eksploratif dan dengan pendekatan metode PRA (Participactory Rural Appraisal) yaitu proses pengkajian yang berorentasi pada keterlibatan dan peran masyarakat secara aktif dalam penelitian. Tahapan pada penelitian ini meliputi survey, observasi, wawancara, dokumentasi tumbuhan, koleksi tumbuhan, identifikasi dan pembuatan herbarium. Diperoleh sebanyak 89 spesies tumbuhan obat yang tergolong kedalam 46 famili tumbuhan obat yang biasa dimanfaatkan. Cara memperoleh tumbuhan obat yang biasa digunakan masyarakat Suku Manggarai adalah memanfaatkan tumbuhan liar yang terdapat di pekarangan rumah, hutan serta pinggir sungai bahkan ada juga yang sengaja dibudidayakan. Cara pengolahan tumbuhan obat yang biasa digunakan adalah dengan cara direbus, dikunyah lalu ditempel, diparut, diseduh, diremas, ditumbuk, dan tanpa diolah.Kata Kunci: Etnobotani, Tumbuhan Obat, Suku Manggarai
KEANEKARAGAMAN DAN KOMPOSISI IKAN PADA KONDISI PASANG DAN SURUT DI MUARA SUNGAI KELAY KABUPATEN BERAU KALIMANTAN TIMUR Yudistira, Yudistira; Jusmaldi, Jusmaldi; Hendra, Medi
Jurnal Pendidikan Matematika dan IPA Vol 10, No 2 (2019): Juli 2019
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jpmipa.v10i2.25868

Abstract

Research on diversity and composition of fish at low tide and high tide condition in downstream Kelay River, District Berau, East Kalimantan is not yet know. The purpose of this research was to determine diversity and composition of fish that present at low tide and high tide condition in downstream Kelay River. In research using purposive sampling method and various sizes gill nets used. Results of this research shows that fish were collected at three locations sampling in downstream Kelay River consist of 14 species, 9 families, and 953 individuals. Based on the number of species, diversity Shannon-Wiener index and dominance index has stable of communities, with high value of diversity index (H'=1.975), high evenness index (E=0.749), and low value of dominance index  (D= 0.173). The number of fish species found at low tide were 11 species and at high tide were 12 species. The similarity index of fish species at low tide and high tide condition were 64.3%.