KARAKTERISTIK HABITAT DAN POPULASI KATAK POHON JAWA (Rhacophorus margaritifer)DI KAWASAN RANCA UPAS CIWIDEY, JAWA BARAT
Daftar Isi:
- Kawasan Ranca Upas merupakan kawasan bumi perkemahan dan konservasi hutan lindung. Katak Pohon Jawa (Rhacophorus margaritifer) merupakan salah satu amfibi endemik Jawa yang memiliki status Least Concern (LC) menurut IUCN. Salah satu persebarannya berada di kawasan Ranca Upas Ciwidey, Jawa Barat. Kawasan ini memiliki ancaman perubahan kondisi lahan akibat semakin meluasnya area bumi perkemahan dan tempat wisata. Penelitian ini bertujuan untuk mengidentifikasi karakteristik habitat dan populasi Katak Pohon Jawa (Rhacophorus margaritifer) di kawasan hutan heterogen Ranca Upas Ciwidey, Jawa Barat. Penelitian dilakukan selama tiga bulan pada bulan Maret sampai Mei 2018. Pengambilan data habitat dilakukan pada setiap 100 m sepanjang 300 m mengikuti panjang sungai. Pengambilan data populasi menggunakan metode Capture-Mark-Release-Recapture dengan jalur pengamatan sepanjang 300 m mengikuti panjang sungai. Penandaan pada katak menggunakan benang sepatu yang dimodifikasi sedemikian rupa. Karakteristik habitat dianalisis secara deskriptif dan kuantatif, estimasi populasi Rhacophorus margaritifer dihitung menggunakan metode Schnabel dan distribusi populasi di hitung menggunakan indeks penyebaran distribusi Morisita. Hasil penelitian menunjukan bahwa habitat Rhacophorus margaritifer di kawasan hutan heterogen Ranca Upas memiliki rerata suhu udara16,6 oC, rerata suhu air 14,8 oC, rerata kelembaban udara 90,8 %. Sungai hutan heterogen Ranca Upas berada pada ketinggian 1630 – 1670 mdpldengan perairan sungai jernih, substrat lumpur, kecepatan arus 0,068 m/s dan tingkat keasaman yang netral. Selama penelitian ini dilakukan terdapat tiga substrat yang sering digunakan Rhacophorus margaritifer yaitu pada tumbuhan Strobilanthes crispus, Cyathea sp., danCurculigo capitulata. Estimasi populasi Rhacophorus margaritifer di kawasan hutan heterogen Ranca Upas berjumlah 286 individu atau dengan kepadatan sebesar sebesar 5 individu/100 m2 dan memiliki kecenderungan untuk mengelompok.;--Ranca Upas is a camping and conservation area that has a protected forest. Javan Tree Frog (Rhacophorus margaritifer) are one of the endemic frogs in Java, with Least Concern (LC) status on IUCN list. One of its distribution is in Ranca Upas Ciwidey, West Java. This area has a threat of changing land conditions due to the increasingly widespread area for campground and tourist attractions. This research aims to identify characteristics of habitat and populations of Javan Tree Frog in heterogeneous forest areas Ranca Upas Ciwidey, West Java. This research was carried out over a period of three months (March - May 2018). Habitat data was collected 3 times along the 300 m river (100 m each). The method used in collecting data was the Capture-Mark-Release-Recapture method with a line transect of 300 m along the river. Captured frogs were tagged using modified shoelaces. Habitat characteristics were analyzed descriptively and quantitatively, population estimation of Rhacophorus margaritifer was calculated with the Schnabel method, and population distribution was calculated with Index of Morisita. The results showed that Rhacophorus margaritifer in Ranca Upas heterogeneous forest area had the average of air temperature was 16,6 oC, average of water temperature was 14,8 oC, average of air humidity was 90,8%. The heterogeneous Ranca Upas forest is at an altitude of 1630 m asl - 1670 m asl with clear river waters, mud substrate, average water velocity is 0.068 m/s and has a neutral acidity. During this research, there are three substrates that are often used by Rhacophorus margaritifer to live, they are Strobilanthes crispus, Cyathea sp., andCurculigo capitulata. The population estimate of Rhacophorus margaritifer in heterogeneous forest area Ranca Upas was 286 individuals or 5 individuals/100 m2 and have a clumped dispersion.