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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences BULETIN OSEANOGRAFI MARINA Journal of Marine Research Ekonomikawan : Jurnal Ilmu Ekonomi dan Studi Pembangunan Jurnal Kelautan Tropis Journal of Marine Research

Irwani Irwani

Unknown Affiliation

Author-ID : 452109

Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Economics, Econometrics & Finance Environmental Science

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IDENTIFIKASI DAERAH RAWAN ROB UNTUK EVALUASI TATA RUANG PEMUKIMAN DI KABUPATEN DEMAK Adi Chandra Kusuma; Irwani Irwani; Sugeng Widada
Journal of Marine Research Vol 2, No 3 (2013) : Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Banjir rob is when an area inundated during the highest tide and low tide again at the lowest tide. The factor of banjir rob is the height of land, land subsidence, the distance from coastal, and the distance from river. Identification of rob prone areas in Demak is a measure of disaster mitigation to minimize the negative impact of the banjir rob that inundated settlement areas. The purpose of this study is to map the rob prone areas and evaluate the rob prone areas to the spatial planning of settlement area in Demak District. There are five classes of rob prone that inundating settlement area in Demak including the very prone class 14.464 ha, prone class 103.906 ha, the less safe class 335.472 ha, safe class 877.394 ha, very safe class 117 1,527 ha. Areas that included in very prone and prone classes are in Sriwulan Village, Bedono, Timbul loko, Bedono, Surodadi, Tambak bulusan, Morodemak, Purworejo, Betahwalang, Wedung, Berahankulon, and Kedungmutih. Areas that included in less safe, safe, and very safe spread classes are spreading on all villages in Demak District.

DISTRIBUSI KELAS UKURAN KERANG SIMPING PINGGIR (Placuna Placenta, Linn, 1758 :Pelecypoda) DI PERAIRAN GENUK SEMARANG Diah Ayu Isti Anti; Chrisna Adhi Suryono; Irwani Irwani
Journal of Marine Research Vol 3, No 1 (2014) : Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Placuna placenta are often called scallop shells included in the phylum mollusca, Pelecypoda Class, and Family Placunidae. The research was held on October until December 2012. The research was conducted at the research 8 stations. The materials have been used are scallop shells, sea water, and the substrate of water base. The method used in this research is descriptive method and purposive sampling method as the method in determining the location of doing research with interval of 1 month. The result of this research is that the distribution of scallop shells in Genuk waters found in October was 63 ind / ha, in November 582 Ind / ha and in December 155 ind/ha. The Results of the linear regression about relationship length and weight of the Scallop shells in the period October- December included on negative allometric because the regression coefficient (b) less than 3. The abundance of scallop shells on research site influenced waters condition quality and the organic materials in sediment.

Studi Akumulasi Logam Tembaga (Cu) dan Efeknya terhadap Struktur Akar Mangrove (Rhizophora mucronata) Irwan Dedy; Adi Santoso; Irwani Irwani
Journal of Marine Research Vol 2, No 4 (2013) : Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Copper metal (Cu) is one of the heavy metals that can contaminate the environment, especially water. Cu is a heavy metal which is harmful to human health, but Cu is also needed in our life as trace elements. This study aimed to determine the effect of Cu contaminants with different concentrations on the root structure of the mangrove seedlings Rhizophora mucronata for 30 days of observation. Rhizophora mucronata is taken from Tapak village, Tugu, Semarang, Central Java. The research was carried out from June to August 2012 at the Marine Science Campus of Diponegoro University Semarang. A laboratory experiment research was conducted on the effect of different Cu concentrationt (20, 100 and 500 ppm) and different exposure material (10, 20 and 30 days) on the root structure of mangrove Rhizophora mucronata. Root structure using microscopy observations performed at the Laboratory of Plant Faculty of Science and Mathematics, Diponegoro University. The result demonstrated that the root of epidermis, cortex, endodermis, xylem and phloem had no effect on their structure after exposure to concentration of Cu of 20, 100 and 500 ppm since there were not change on their shape compared to the control.

Co-Authors Adi Chandra Kusuma ADI SANTOSO Agus Indarjo Agus Trianto Baskoro Rochaddi Chrisna Adhi Suryono Chrisna Adhi Suryono Diah Ayu Isti Anti Didik Aribowo Dimas Nugroho Ari Prihantanto Endi Permata Hadi Endrawati Hebron Yustiabel Ibnu Pratikto Irwan Dedy Irwanto Irwanto Muhammad Hifny Akhsin Muhammad Zaenuri Nugraha Ridho Ikhsani Nur Taufiq Syamsudin Putra Jaya Ody Prajeki Petrus Subardjo Sugeng Widada Widianingsih Widianingsih

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