External factors are factors that affect the growth of seaweed from outside the body. At planting seaweed external factors affecting the growth is from the ecological or live media seaweed. Water temperature is one factor that is very important in the study of physics symptoms seawater and waters which could affect animal and plant life in these waters. Water temperature ...
Read More »Kebijakan Daerah Aliran Sungai
Pengelolaan sumber daya air dilaksanakan secara terpadu (multi sektoral), menyeluruh (hulu-hilir, kualitas-kuantitas, berkelanjutan (antar generasi)), berwawasan lingkungan dengan DAS (satuan wilayah hidrologis) sebagai kesatuan pengelolaan. Satu sungai, satu rencana, satu pengelolaan secara terpadu dengan memperhatikan sistem pemerintahan yang sekarang (desentralisasi) dapat ditentukan bahwa : 1) Satuan sungai dalam artian DAS yang merupakan kesatuan wilayah hidrologis yang dapat mencakup wilayah administratif ...
Read More »Disease Due to Bacteria On Fish
A. Mycobacterium sp Mycobacterium sp. which is known as a cause of disease “fish tuberculosis” (Fish TB), is a rod-shaped bacterium, with a size of 0.2-0.6 x 1.0 to 10 μm, are gram positive weak, do not move, do not form spores or capsules and aerobic. These bacteria are often found in fresh and marine waters or soil with an ...
Read More »Bacteria Attack On Fish Farming
A. Pasteurella piscicida Pasteurella piscicida is a short rod-shaped bacteria, measuring 0.6-1.2 x 0.8 to 2.6 μm, are gram-negative, do not move, do not make the capsule or spore and are facultative anaerobes. These bacteria can live in seawater environment with a temperature range for growth is 10-39 ° C. Generally isolated from fish can grow well at 25 o ...
Read More »Pengelompokan Organisme Tanah
1. Berdasarkan ukuran Berdasarkan ukurannya, maka organisme tanah atau jasad hayati tanah ini dikelompokkan menjadi tiga kelompok, yaitu (1) Makrobia tanah, jika berukuran di atas 10 mm, (2) Mesobia, jika berukuran 0,2- 10 mm, dan (3) Mikrobia, jika berukuran < 0,2 mm (200 mm). 2. Berdasarkan Cara Memperoleh Energi Berdasarkan cara memperoleh energi, mikroorganisme tanah dibedakan menjadi dua kelompok, yaitu ...
Read More »As Habitat Soil Microorganisms
Soil as a habitat for microorganisms to function as a natural medium for growth and doing all the activities physiology. Soil provides nutrients, water and carbon source necessary for the growth and activity of microorganisms. In this respect, the soil environment as abiotic factors (which include physical and chemical properties of the soil) and biotic (presence of other microbes and ...
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