Studi Aspek Reproduksi Ikan Beronang Totol (Siganus guttatus) Betina

29 10 2009

M Khairus Said. K2D 604 019. Studi Aspek Reproduksi Ikan Beronang Totol (Siganus guttatus) Betina (Endang Sri Susilo dan Sri Redjeki).

Ikan beronang totol merupakan jenis ikan yang mempunyai nilai ekonomis penting di Perairan Jepara. Saat ini sebagian besar stok ikan beronang tergantung stok di alam. Perubahan fungsi ekosistem menjadi daerah pariwisata dihawatirkan dapat mengganggu populasi ikan. Agar dapat menjaga kelestarian ikan beronang totol maka perlu dilakukan penelitian mengenai aspek reproduksi ikan tersebut sehingga dalam pengelolaannya dapat dilakukan secara maksimal.

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Bioprospeksi Bakteri Simbion Pada Tunikata Didemnum molle dari Perairan Pulau Sambangan Karimunjawa Jepara

29 10 2009

MIFTAHUDDIN MAJID KHOERI. K2D 004 254. Bioprospeksi Bakteri Simbion Pada Tunikata Didemnum molle dari Perairan Pulau Sambangan Karimunjawa Jepara (Ocky Karna Radjasa dan Agus Sabdono).

Terumbu karang merupakan ekosistem yang produktif dengan keanekaragaman tinggi di laut dan telah menjadi target bagi pencarian sumber senyawa bioaktif yang bermanfaat dalam dunia farmasi. Akan tetapi, masalah serius dalam pengembangan senyawa bioaktif dari invertebrata laut tersebut adalah masalah suplai, karena untuk mendapatkan sejumlah relatif kecil senyawa aktif diperlukan sejumlah besar organisme laut. Tunikata merupakan invertebrata di ekosistem terumbu karang yang banyak menghasilkan senyawa bioaktif untuk farmakologi seperti, antibakteri, antitumor dan antikanker. Dilaporkan bahwa bakteri yang bersimbiosis dengan invertebrata karang dapat mensintesis senyawa yang sama dengan inangnya. Resistensi bakteri patogen terhadap antibiotik telah menjadi masalah di dunia kesehatan.

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Compotition and Community Structure of Periphyton at Rhizophora mucronata Lamk dan Avicennia marina (Forsk) Vierh. Roots in Mangrove Vegetation of Tapak Estuary, Semarang

31 03 2009

Aini Chairunnisa Amalia. K2D 001 234. Compotition and Community Structure of Periphyton at Rhizophora mucronata Lamk dan Avicennia marina (Forsk) Vierh. Roots in Mangrove Vegetation of Tapak Estuary, Semarang. (Widianingsih and Rudhi Pribadi)

Periphyton has a significant role in food web of mangrove community. The objective of this research was to analyze community structure of periphyton that live attached on mangrove roots of Tapak Estuary ecosystem.

This has been done in February until April 2006. Material used in the research was living sample of periphyton that live attached on mangrove roots of Tapak Estuary ecosystem. Explorative descriptive method was applied as research method while sample survey method was used in collecting data and purposive sample method was used to determine sampling location. Supporting parameter data include sediment grain size and organic substance content, turbidity, current velocity, temperature, salinity, dissolved oxygen, pH, nitrate, phosphate, and silicate from each sampling station.

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Komposisi dan Struktur Komunitas Perifiton pada Akar Rhizophora mucronata Lamk dan Avicennia marina (Forsk) Vierh. di Vegetasi Mangrove Muara Sungai Tapak Semarang

31 03 2009

Aini Chairunnisa Amalia. K2D 001 234. Komposisi dan Struktur Komunitas Perifiton pada Akar Rhizophora mucronata Lamk dan Avicennia marina (Forsk) Vierh. di Vegetasi mangrove Muara Sungai Tapak Semarang.  (Widianingsih dan Rudhi Pribadi)

Perifiton mempunyai peranan penting dalam jaring-jaring makanan di komunitas mangrove. Tujuan penelitian ini adalah untuk mengetahui struktur komunitas perifiton yang menempel pada perakarannya di ekosistem mangrove Muara Sungai Tapak, Semarang.

Penelitian ini dilakukan pada bulan Februari-April 2006 di kawasan mangrove Muara Sungai Tapak, Semarang. Materi dalam penelitian ini adalah perifiton yang hidup menempel pada akar mangrove di Muara Sungai Tapak, Semarang. Metode yang digunakan adalah metode deskriptif eksploratif. Metoda pengambilan sampel perifiton menggunakan survey contoh. Metode penentuan lokasi sampling menggunakan metode purposive sample. Parameter lingkungan yang diukur sebagai data pendukung meliputi ukuran butir dan kandungan bahan organik sedimen, kecerahan, kecepatan arus, suhu, salinitas, oksigen terlarut, pH, nitrat, fosfat dan silikat dari masing-masing titik sampling.

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Spatial Analysis of Anxious Tidal Flood Area at Semarang City

5 02 2009

In last 25 year, when tide, Semarang coast area have higher flood frequency because of sea water level advance. Flood or called tidal flood to overflow some area that lower then sea level when its have maximum tide (HHWL). Tidal flood is common for Semarang society, its as common as when saw the river flow to the beginning of river and not to down stream. Many opinions about that tidal flood cause. One of them because sea level rise, as a consequence from global warming. But there was another factor. Land subsidence has a contribution in tidal flood too.

The research was done on Augustus 2005 until Febuari 2006 at Semarang Coastal area. There was ground check to collect extend of inundate area by tidal flood. This research aim are to predict some area that overflow by sea level rise until 2015 and prediction to anxious tidal flood area until 2015 caused by sea level rise and land subsidence also spatial analysis for some anxious inundate settlement.

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Study of Suspended Sediment Distribution Based on Wind Monsoon in Pemalang Coastal Waters, Jawa Tengah Using Aqua–MODIS Data

5 02 2009

Pemalang coastal water is a territorial waters with high navigation activity, especially fisherman activity. Another factor which directly interact with the territorial waters is a place empties into several rivers, among others Comal, Comal Lama, Banger, Sragi Lama, Kangkung, Sragi Baru, Bedahan, Waluh, Elon, and Baros rivers. The existence of those rivers give suspended sediment loading and caused sedimentation process in the territorial waters which mentioned before. Using remote sensing data, the distribution of suspended sediment can be watched. In this case use Aqua–MODIS satellite data.

The aim of this research is to know about the distribution of suspended sediment based on wind monsoon in Pemalang coastal waters using Aqua–MODIS satellite data. The method of this research was descriptive method through Aqua–MODIS satellite image data processing include image data collecting, secondary data collecting, field data collecting, image data digital analysis, field data analysis and examination test.

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Study on Phytoplankton Community Structure in Segara Anakan Waters, Cilacap, for the Period of September to December 2004

5 02 2009

Plankton is minute organism living drifted away in a water column. Phytoplankton is floral-plankton which able to synthesize their food using sun energy through photosynthesis process. In most time the presences of phytoplanktons influence the productivity of the waters, but in some extreme condition they can be dangerous for their environment too. The aim of this study is to identify community structure of phytoplankton in Segara Anakan lagoon and its related environmental factors, and hopefully the findings will be useful as back up data for the monitoring programmed of the lagoon.

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