Ruswahyuni Ruswahyuni
Program Studi Manajemen Sumberdaya Perairan FPIK-UNDIP Semarang

Published : 9 Documents
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Journal : SAINTEK PERIKANAN

Nutrient Distribution on the Plankton Community Structure in Bandengan and Panjang Island Water, Jepara Widyorini, Niniek; Ruswahyuni, Ruswahyuni
SAINTEK PERIKANAN Vol 3, No 2 (2008): Jurnal Saintek Perikanan
Publisher : SAINTEK PERIKANAN

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Abstract

The influence of freshwater tidals zone at Bandengan and Panjang Island could be seen by extensive finding of freshwater plankton such as Anabaena, Nitzschia, Oscillatoria, Tolypothrix, Surirella, Euglena, Volvox, and Spirogyra. Partially, salinity in Bandengan water was 30 – 33 o/oo, pH ranged between 8 – 9, and nitrite was zero, wich was in compliance with the criterian for seawater (Kep-02/MENKLH/I/88). The high level of SiO2 in Bandengan waters (1.20 – 3.29 mg/l) and Panjang Island (1.58 – 3.30 mg/l) supported the dominance of Chrysophyceae, especially Diatomae, in the study areas.  Keywords : Nutrient, Plankton, Bandengan, Panjang Island
The Community Structure of Macrozoobenthic Associated with Seagrass on Sandy Bottom in Jepara Ruswahyuni, Ruswahyuni
SAINTEK PERIKANAN Vol 3, No 2 (2008): Jurnal Saintek Perikanan
Publisher : SAINTEK PERIKANAN

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Abstract

Macrozoobenthos play an importan role in food chain stucture within coastal ecosystem. As benthic organisms their life are highly influenced by surrounding environment including as physical, chemical anf biological factors. Sea grass is a macrophyte community that serves as habitat for macrozoobenthos. The result of observation showed that the most abundant macrozoobenthos living in seagrass at Bandengan and Pulau Panjang was Polychaeta. In addition, the abundance of macrozoobenthos in seagrass increased with the increase of seagrass density.  Keywords: Benthic, seagrass, community structure
KOMPOSISI DAN DISTRIBUSI LARVA IKAN PELAGIS DI ESTUARIA PELAWANGAN TIMUR, SEGARA ANAKAN, CILACAP Subiyanto, Subiyanto; Ruswahyuni, Ruswahyuni; Gondo Cahyono, Dwi
SAINTEK PERIKANAN Vol 4, No 1 (2008): Jurnal Saintek Perikanan
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Abstract

Penelitian mengenai komposisi dan distribusi larva ikan di estuaria Pelawangan Timur, Segara Anakan, Cilacap telah dilakukan dua minggu sekali selama bulan Juli-Oktober 2003. Pengambilan sampel larva dilakukan di muara dan sungai Donan, Sapuregel, dan Kembangkuning dengan menggunakan Plankton net mesh size 0,2 mm yang ditarik perahu dengan kecepatan rata-rata 2 knot selama 10 menit. Selama penelitian larva yang tertangkap di Pelawangan Timur sebanyak 1688 individu terdiri dari 15 famili yang didominasi oleh Pomacentridae (29,84%), Atherinidae (28,66%), Gobiidae (20,31%), Clupeidae (11,19%), sedangkan untuk jenis larva lainnya hanya ditemukan dalam jumlah yang sedikit, yaitu kurang dari 2%. Famili Pomacentridae, Atherinidae, dan Gobiidae mempunyai distribusi yang sama yaitu tersebar merata di semua stasiun penelitian dengan jumlah individu terbanyak pada sungai Donan dan Sapuregel. Distribusi famili Clupeidae mempunyai jumlah individu terbesar pada Muara sungai Donan. Sebagian besar larva merupakan ikan laut yang melakukan ruaya ke perairan Pelawangan Timur. Sedangkan pola distribusi larva ikan mempunyai kecenderungan mengadakan migrasi ke daerah mangrove yang terdapat di sepanjang pinggiran sungai Donan dan Sapuregel. Kelimpahan larva terbanyak di daerah muara sungai Donan dan sungai Sapuregel.
HUBUNGAN ANTARA KELIMPAHAN MEIOFAUNA DENGAN TINGKATAN KERAPATAN LAMUN YANG BERBEDA DI PANTAI PULAU PANJANG JEPARA Ruswahyuni, Ruswahyuni
SAINTEK PERIKANAN Vol 4, No 1 (2008): Jurnal Saintek Perikanan
Publisher : SAINTEK PERIKANAN

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Abstract

Meiofauna  merupakan  salah  satu  biota  yang  sangat  penting  dalam  struktur  rantai  makanan  dalam komunitas padang lamun. Biota meiofauna bersifat relatif menetap pada dasar perairan, oleh karena itu adanya  perubahan  lingkungan  akibat  eksploitasi dan  pencemaran  yang  berlebihan  dapat mengurangi kelimpahan organisme meiofauna sehingga secara tidak langsung juga mempengaruhi ekosistem. Metoda yang digunakan dalam penelitian adalah metode deskriptif. Pengambilan sampel dilakukan sebanyak 3 kali ulangan  dengan interval waktu berdasarkan  surut terendah dari  pasang surut air  laut.  Sampling dilakukan pada 3 stasiun, yaitu pada daerah padang lamun dengan kerapatan jarang, sedang, dan rapat. Setiap stasiun dibagi menjadi tiga titik sampling sehingga semuanya menjadi 9 titik sampling. Hasil penelitian diperoleh 304 individu dari 31 spesies hewan meiofauna pada masing-masing kerapatan lamun yang berbeda. Pada kerapatan lamun jarang ditemukan meiofauna 75 individu pada kerapatan lamun sedang terdapat 104 individu dan pada kerapatan lamun padat ditemukan meiofauna 125 individu. Berdasarkan  uji statistik menunjukkan adanya hubungan antara kerapatan lamun dengan kelimpahan individu meiofauna. Hubungan antara perbedaan kerapatan lamun dengan kelimpahan meiofauna membentuk persamaan Y = 59,0453 + 0,001593x. dengan nilai koefisien korelasi (r) sebesar 0,9997 dan koefisien determinasi (R2) sebesar 0,9995. Sedangkan nilai F hitung > F tabel dengan taraf signifikasi (Sig.) P < 0,05 pada taraf kepercayaan (α) 0,05. Komposisi dan kelimpahan hewan meiofauna dengan tingkat kerapatan lamun berbeda menunjukkan adanya korelasi yang tinggi dan bersifat positif, hal ini berarti  setiap  pertambahan  kerapatan  lamun  diikuti  dengan  pertambahan  komposisi  dan  kelimpahan spesies dan kelimpahan individu hewan meiofauna.   Kata Kunci : Lamun, Meiofauna, Kerapatan, Kelimpahan.
The Populations of Macrobenthos Organisms in The Peat Soil in Rawapening Reservoir Ruswahyuni, Ruswahyuni; Nata, William
SAINTEK PERIKANAN Vol 5, No 2 (2010): Jurnal Saintek Perikanan
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Abstract

Rawapening a reservoir in Semarang district, which holds the potential fisheries resources. Water in Rawapening comes from eighteen rivers, and there is only one outflow, i.e. Tuntang river. Peat soil in Rawapening has a high organic matter content. In terms of ecology, the presence of organic material is able to enrich the aquatic environment. The waters which has high content of organic material needs more oxygen to dicompose, so that the waters contain less oxygen. This condition can be harmful to aquatic organisms, especially benthic animals that are not active or have a limited movement. A discriptive field research was conducted in July 2008. The objectives of this research was to determine the populations of macrobenthos organisms in the peat soil which has different organic matter content The results show that the structure of macrobenthos populaion found in of 4 classes, consisting of: Oligochaeta, Gastropoda, bivalves and larvae of Insects. Of these 4 classes, there are 10 genera composed of 5 genera Oligochaeta, 1 genus of Bivalves, 3 genera of Gastropods and 1 genus of Cironomid. Chi-Square statistical analysis, showed that there are differences in macrobenthos population in the peat soils with different organic matter content in the waters Rawapening. Key Words: Macrobenthos. Peat Soil, Rawapening
BAKU MUTU AIR LAUT UNTUK KAWASAN PELABUHAN DAN INDEKS PENCEMARAN PERAIRAN DI PELABUHAN PERIKANAN NUSANTARA KEJAWANAN, CIREBON (Water Quality Standards For Port Area And Water Pollution Index In Fisheries Port Kejawanan, Cirebon) Sudirman, Nasir; Husrin, Semeidi; Ruswahyuni, Ruswahyuni
JURNAL SAINTEK PERIKANAN Vol 9, No 1 (2013): JURNAL SAINTEK PERIKANAN
Publisher : JURNAL SAINTEK PERIKANAN

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Abstract

Pelabuhan Perikanan Nusantara Kejawanan secara administratif terletak di wilayah Kota Cirebon. Pelabuhan ini merupakan salah satu Unit Pelaksana Teknis dari Direktorat Jenderal Perikanan Tangkap, Kementerian Kelautan dan Perikanan yang sangat penting peranannya dalam mendukung program industrialisasi perikanan di Cirebon. Aktivitas pelabuhan perikanan yang cukup ramai dengan berbagai kegiatannya antara lain aktivitas bongkar ikan, perbengkelan serta posisinya yang dekat dengan sungai dan terdapat berbagai pabrik pengolahan ikan tentunya akan menimbulkan dampak terhadap kualitas airnya. Penelitian ini bertujuan untuk mengetahui kesesuaian baku mutu air laut untuk pelabuhan serta untuk mengetahui indeks pencemaran yang terjadi. Metode yang digunakan dalam penelitian ini pada dasarnya secara kuantitatif dimana pengumpulan data yang dilakukan dengan pengukuran kualitas air menggunakan Water quality cheker, identifikasi laboratorium untuk sedimen dan air. Hasil yang diperoleh pada penelitian ini ternyata kondisi kolam Pelabuhan Perikanan Nusantara Kejawanan dalam kondisi tercemar sedang, dimana parameter pH dan Seng berada diatas ambang batas baku mutu yang disyaratkan. Kata kunci : Pelabuhan, Indeks Pencemaran, Baku Mutu, Kejawanan Kejawanan fishing port administratively located in the city of Cirebon. Theportis administrativelyunder the DirectorateGeneral of CapturedFisheries, Ministery of Marine Affairs and Fisheriesand is veryimportantinsupporting thefisheries industriesinCirebon. Activityfishing portsarequite crowdedwitha variety ofactivitiesincluding afishloading activities, workshop activities as well asits positionnear to theriverandthere area varietyof fishprocessing plants, will certainlyhave an impactonwaterquality. This studyto determinethe suitability ofseawaterquality standardforthe portas well asto determine thepollution. This port The method used in this study are essentially quantitative where data collection was carried out by measuring the water quality using Water Quality Cheker and laboratory test for the identification for sediment and water quality parameters. The results show that the condition of the Fishing Port of Kejawanan was in a moderate polluted conditions which the parameters of pH and zinc were above the required threshold. Key words : Port, Pollution Index, Standards, Kejawanan
The Difference in Abundance of Echinoideas on Coral Ecosystem and Seagrass Beds in Pancuran Belakang, Karimunjawa, Jepara Suryanti, Suryanti; Ruswahyuni, Ruswahyuni
JURNAL SAINTEK PERIKANAN Vol 10, No 1 (2014): JURNAL SAINTEK PERIKANAN
Publisher : JURNAL SAINTEK PERIKANAN

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Abstract

Phyllum of echinoderms has a large role on the ecosystems of coral reefs and seagrass beds, especially their various roles in foodweb, which are herbivorous covering, carnivorous, or as detritus eaters. One of the echinoderms which is always found in the coralreefs region and seagrass beds is the echinoidea. Echinoidea mostly inhabits coral reef ecosystem and seagrass beds and found onhard substrates, especially in seagrass beds substrates that consist of mixtures of sand and crushed corals. The purpose of thisresearch was to know the difference in the echinoidea abundances of coral reef ecosystem and seagrass beds in Pancuran Belakang,Karimunjawa, Jepara in the month of May 2014. Research methodology that was used is a method of direct observation that is bymeans of observing the species of echinoidea found in coral reef ecosystems and seagrass beds and water quality conditions assupporting data. The research results showed that the cover of coral reefs and seagrass beds in Pancuran Belakang Karimunjawa inthe category of good which are of 55.29 % on coarl reef and 61.94 % seagrass. The echinoidea that was found in reefs and seagrassbeds is Diadema setosum (123;36 ind (150 m)-2), Diadema antilarum (63;18 ind(150 m)-2), Echinothrix calamaris (34;22 ind (150m)-2), Mespilia globulesa (12;0 ind(150 m)-2), and Echinometra mathaei (14;0 ind(150 m)-2), The independent t test with SPSSsignificant value of 5 % t table = 2.776 > t calculated = -2.319. Therefore, Ho was accepted that there is a significant difference ofthe echinoidea on the coral reefs and seagrass beds.Keywords : Echinoideas; Coral Reef; Seagrass, Pancuran Belakang and Karimunjawa