3 research outputs found
Ketersediaan Makanan Lumba-lumba Pemintal (Stenella longirostris) di Kawasan Taman Wisata Perairan Pulau Pieh, Sumatera Barat
No full textKeberadaan makanan lumba-lumba yaitu ikan sangat bergantung pada kelimpahan plankton. Fitoplankton merupakan mata rantai pertama di dalam rantai makanan di perairan, fitoplankton akan dimanfaatkan secara langsung oleh zooplankton dan akan menjadi pakan alami bagi ikan-ikan kecil yang ada diperairan, puncak dari rantai makanan ini adalah konsumen tingkat tinggi yaitu lumba-lumba. Penelitian ini bertujuan untuk menganalisis komposisi dan struktur komunitas plankton sebagai makanan ikan di perairan, menganalisis jenis-jenis ikan sebagai makanan dari Stenella longirostris, dan menganalisis kualitas perairan di Kawasan TWP Pulau Pieh, Sumatera Barat. Penelitian ini menggunakan metode survey, pengambilan sampel plankton ditetapkan secara purposive sampling dan data jenis-jenis ikan menggunakan lembar kuisioner. Berdasarkan penelitian didapatkan 114 spesies plankton dengan 34 famili dan 10 kelas. Indeks diversitas plankton pada kawasan TWP Pulau Pieh termasuk kedalam indeks diversitas tinggi dengan penyebaran yang merata pada seluruh lokasi dan tidak adanya spesies yang mendominasi. Jenis-jenis ikan pada Kawasan TWP Pulau Pieh adalah ikan pelagis yang diduga menjadi makanan bagi S. longirostris berasal dari famili Engraulidae, Scombridae, Carangidae dan Trichiuridae serta Loliginidae dan krustacea. Kualitas perairan pada masing-masing lokasi penelitian secara umum masih berada pada batas toleransi kehidupan untuk plankton dan ikan serta lumba-lumba karena sesuai dengan syarat hidup baku mutu air laut.
Kata kunci : plankton, ikan, S.longirostris, TWP Pulau Pie
Community Structure Of Plankton In Pieh Island Aquatic Tourism Park Area, West Sumatra
No full textAbstract-This research was conducted from January to September 2022. This study aims to determine the community structure of plankton in the Marine Tourism Park area of Pieh Island, West Sumatra. The study used roaming methods, and sampling was determined by purposive sampling. Based on the research results, it was found that the highest density (13, 002 – 21, 405 ind/l) was on Pandan Island (13.002 Ind/l), the frequency of presence was found to be included in the category Occasionally present to always present, the diversity index was high with an even equability index and no species dominated. The physical and chemical characteristics of seawater in the area of Pieh Island are still supportive of plankton and fish life because they comply with the biota's living conditions and seawater quality standards.Keywords-Plankton, community, structure
Effectiveness of Various Types Bio-Activators to speed up the composting process and Quality of Compost Fertilizer.
No full textAbstract— Organic waste has become a big environmental issue in urban areas. Food waste and plant waste are part of organic waste originating from households, the campus environment, and the food industry. Where this organic waste has a high percentage of the total waste that is disposed of in the landfill. Organic waste also pollutes the environment, causing serious greenhouse gas emissions. Throwing away food waste produces methane gas, which is harmful to the environment and causes global warming. To avoid the mass production of methane gas and environmental pollution from food waste, it is very important to minimize the disposal of food waste in landfills by encouraging waste recycling such as the use of such waste as organic fertilizer in agriculture through the composting process. Therefore, it is necessary to look for a bio activator that can accelerate the composting process by producing compost quality according to SNI. This article presents a review of the use of various bio activators that can accelerate the rate of composting. The study shows that various sources of bio activators have been used in composting food waste such as fruit, vegetables, plant fiber, and agricultural waste. Further studies are needed to see a better combination of bio activators for the composting process.
