Judul: Simulation Model of Mangrove Degradation (Case Study at Mahakam Delta, East Kalimantan Provinve, Indonesia)
Abstrak: The crucial problem at Mahakam Delta is the degradation of mangrove ecosystems. This is mainly due to the social impacts resulting from the monetary crisis in mid 1990’s in which large number of shrimpponds were constructed and mangroves were cleared in many parts of the delta. The main objective of this research is to study the dynamic changes of mangrove coverage at Mahakam Delta East Kalimantan. The specific objectives are: 1) to predict on the future trend of mangrove degradation both mangrove coverage degradation and land value degradation, 2) to identify the influencing factors of mangrove degradation both mangrove coverage degradation and land value degradation, and 3) to know the dynamic processes of mangrove degradation both mangrove coverage degradation and land value degradation. The factors that influence mangrove coverage degradation at Mahakam Delta are regeneration and exploitation. Mangrove degradation rate at Mahakam Delta is 0.140023, that is the net growth rate and exploitation rate. The factors that influence land value are mangrove coverage degradation itself, benefit of mangrove forest products, exploitation cost, and recovery cost. Prediction of mangrove coverage degradation at Mahakam Delta indicates that about 50% will degrade in year 2010, while in 2024 the remaining mangrove coverage is estimated to be 1,547.14 hectare (6.85%). The land value degradation at Mahakam Delta is estimated around Rp. 1,210 billion at the early prediction (year 2005) and a loss over Rp. 1 billion for the last prediction (year 2024).
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Judul: Spatial dynamic modeling for sustainable coastal resources use, case study : mangrove conversion for shrimp ponds development in Mahakam Delta, East Kalimantan
Abstrak: Delta Mahakam yang terletak di Kalimantan Timur secara ekologis dan ekonomis merupakan wilayah yang unik dengan hutan mangrove and spesies asosiasinya serta kegiatan ekonomi berupa produksi minyak dan gas bumi serta pertambangan udang., Mahakam Delta in East Kalimantan is ecologically and economically unique with vast mangrove forest and its associated species, and with mixed economic activities of oil and gas and shrimp farming. In the last six years since 1997, the Mahakam Delta area has undergone a severe mangrove and nypa deforestation caused by conversion of the forest into shrimp ponds and for oil and gas extraction fields. For shrimp ponds have disappeared since 1983. The rapid degradation of this geologically unique estuarine environment has rose serious concern over the long term sustainability of the Mahakam Delta ecosystem.
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Judul: Perbandingan Histopatologi Ovarium Ayam sentul seleksi Yang Memiliki Titer Immunoglobulin Y Tinggi Dan Rendah
Abstrak: Telur ayam merupakan jenis makanan bergizi yang sangat populer di kalangan masyarakat yang bermanfaat sebagai sumber protein hewani. Permintaan telur dipengaruhi oleh beberapa faktor dalam industri peternakan. Immunoglobulin Y yang tinggi di ayam menghasilkan produksi telur yang banyak. Oleh itu, penelitian dilaksanakan untuk mengetahui perbandingan jumlah folikel pada ovarium ayam sentul seleksi yang mempunyai titer Ig Y tinggi dan rendah. Pada minggu ke-24, masing-masing 3 ekor dari titer Ig Y tinggi dan Ig Y rendah dimatikan kemudian dilakukan nekropsi dan dilakukan pengambilan ovarium untuk dilihat gambaran histopatologi. Hasil penelitian adalah, tidak ada perbedaan jumlah rataan folikel pada ovarium ayam sentul seleksi dengan titer Ig Y tinggi dibandingkan dengan ayam titer Ig Y rendah.
Keyword: Immunoglobulin Y, Ovarium, Telur, folikel of ovarium, ayam sentul seleksi