KARAKTERISTIK FAKTOR HABITAT SILVOFISHERY DAN MANGROVE DI DESA TANJUNG REJO KECAMATAN PERCUT SEI TUAN KABUPATEN DELI SERDANG SUMATERA UTARA

• Main Authors: , Fonny Selvia Sumaryono, , Dr. Erny Poedjirahajoe, M.P.
• Format: Theses and Dissertations NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2012
• Subjects: ETD
• Online Access: https://repository.ugm.ac.id/100246/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=56148
• Institution: Universitas Gadjah Mada

The study aims at investigating the habitat factor of the silvofishery and mangrove rehabilitation and the significance of the habitat in the silvofishery and mangrove rehabilitation. The location of the study is Tanjung Rejo village of Percut Sei Tuan of Deli Serdang District of North Sumatera. It begins with the preparation of plot path to the mangrove rehabilitation, while the silvofishery sample is drawn in some measurement points. The next step is measuring the parameters of the habitat such as salinity, temperature, pH, diluted oxygen, clay thickness, while the parameter og total N, available P, K and organic C and plankton are drawn and tested in laboratory. Additionally, the number of the stands in the two locations is also calculated. Subsequently the data of the habitat factors is processed and analyzed using independent t-test, Hotelling T 2 test and discriminant analysis is made. The results of the study show that the density value of the mangrove vegetation (7280 individuals/ha) is higher than that in the silvofishery (505 individuals/ha), while the habitat factor gives significant result as indicated by 3 parameters, which are salinity, N element, and organic substance. The results are obtained from the independent t-test in which each of the parameters is tested (univariate). However, if they are tested collectively (multivariate) using Hotelling T 2 test, the result is significant. The differential parameter between the silvofishery and the mangrove rehabilitation is salinity that results from discriminant analysis. The three significantly different factors can be understood because of the presence of the difference in the distance of the two locations from the sea that they have significant impact on the salinity. The N element decreases and the organic C in the silvofishery because of the use of the elements for the productivity of the silvofishery ponds. The use of to mangrove with silvofishery system continues, but it is necessary to give a good attention to its location and condition.