Judul: Pertumbuhan anakan Avicennia marina dan Rhizophora mucronata pada jarak tanam yang berbeda dengan menggunakan teknik penanaman guludan
Abstrak: Ecological impacts due to the destruction of mangrove ecosystem are the loss of various flora and fauna, which in the long run will disrupt the balance of mangrove ecosystem as well as coastal ecosystem. Therefore, rehabilitation efforts are urgently needed to maintain the overall functions of mangrove forest. In the last several years, there is a technique called guludan, which is developed to rehabilitate mangrove forest (Kusmana et al. 2005a). In applying guludan technique, a study had been conducted using seedlings of A. marina and R. mucronata with different spacings, i.e. 0.25 x 0.25 m, 0.5 x 0.5 m, and 1 x 1 m. There has been not many studies conducted yet to develop growth models and increments for the planted seedlings using guludan technique. It is important to obtain information on the growth models and increments in regards to the success of guludan technique. This study is aimed at: 1) formulating models and increments for diameter and height growths for A. marina and R. mucronata seedlings at different spacings, 2) determining the most ideal spacing which can result to the greatest growth and increment for trunk diameter and height of A. marina and R. mucronata seedlings. Data collections were conducted from October 2008 through October 2011 (3 years) at the Mangrove Arboretum Angke Kapuk, located at the side of Sedyatmo Toll, KM 22 through KM 23, Jakarta Province (06o06’45” LS and 106o43’54” BT). This location has water depth of 2-3 m with salinity of 28-30 ppt and pH of 6.88 – 7.52 (Kusmana 2010). Variables observed were trunk diameter and height of A. marina and R. mucronata seedlings with different spacing until reaching 36 months old of age. The starting age for A. marina was 3 months old, whereas for R. mucronata was 6 months old. The trunk diameter was measured at 10 cm above land surface using caliper. The trunk height was measured starting from where the diameter measurement was taken, up to the growth using measurement tape. The observations were conducted every 4 months during the 3 years of study. The models used were non linear regression models developed with software R, using non linear regression analysis. Models used were logistic, Gompertz and Richards. Models for height growth used were power, exponential, polynomial and invers polynomial. The best model was determined using criteria as follows: 1) the model has p value < 0.05; 2) the model has the least AIC, BIC, and RMSE; 3) the model has the greatest R2 and R2adj; 4) the model has residual value which are randomly scattered and homoscedastic. After the best model was chosen, then the mathematical equations were developed to predict the Mean Annual Increment (MAI) and the Current Annual Increment (CAI). MAI is the average of diameter growth model or height growth model over time (f(y)/t). CAI is the differential of diameter growth model or height growth model (dy/dt). Based on the study, it is observed that the diameter growth and height growth of A. marina as well as diameter growth of R. mucronata followed logistic 2 equation. On the other
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Judul: Model Pertumbuhan Semai Rhizophora mucronata Lamk dengan Teknik Penanaman Guludan di Kawasan Pesisir Angke Kapuk, Jakarta
Abstrak: Penanaman mangrove dengan teknik guludan menjadi alternatif untuk rehabilitasi mangrove pada areal bekas tambak dengan kolam air yang cukup dalam (lebih dari 1 m). Tujuan penelitian ini adalah untuk menganalisis model pertumbuhan semai Rhizophora mucronata Lamk (pertumbuhan diameter batang dan tinggi, jumlah daun, jumlah internode, jumlah perakaran tunjang) yang ditanam dengan teknik guludan. Pengukuran dilakukan di Kawasan Hutan Mangrove Angke Kapuk, Jakarta pada bulan Januari 2019-April 2019. Sebanyak 20 individu contoh dari kelompok tahun tanam 2018 dipilih secara sengaja, jenis yang ditanam adalah Rhizhopora mucronata dengan jarak tanam 0.5 m x 0.5 m. Data yang diambil yaitu pertumbuhan tegakan yang meliputi diameter batang, tinggi, jumlah daun, jumlah internode, dan jumlah perakaran tunjang di guludan. Hasil penelitian menunjukkan bahwa pertumbuhan diameter batang dan tinggi semai R. mucronata selama 12 minggu pengamatan membentuk pola persamaan eksponensial positif. Selama periode pengamatan (12 minggu) dari ke-20 semai R. mucronata yang diamati terlihat adanya pertumbuhan 380 helai daun, 53 buah internode, dan 4 buah akar tunjang.
Keyword: pertumbuhan, semai, guludan, Rhizophora mucronata

Judul: Infeksi Virus Parainfluenza Pada Anjing
Abstrak: Virus parainfluenza anjing termasuk famili Paramyxoviridae, berbentuk pleomorf dengan ukuran bervariasi (bergaris tengah antara 100-500 nm), berpembungkus peka ether, berisi genom RNA dan secara serologis mempunyai kesamaan dengan virus SV-5 kera; dikenak sebagai salah satu kausa penting dari sindrom "kennel cough". Infeksinya dapat mengenai anjing semua umur yang belum pernah terinfeksi atau mendapatkan vaksinasi mengakibatkan gejala klinis ringan yang terbatas pada traktus respirasi atu infeksi yang secara klinis tidak memperlihatkan gejala nyata. Gejala klinis yang nampak setelah masa inkubasi (1-5 hari) terlewati berupa batuk yang tidak berat selama beberapa hari, berbagai tingkat tonsilitis dan pharyngitis dan kadang-kadang ditemukan kenaikan temperatur rektal antara 1-2 derajat C dari temperatur normal rat-rata. Anjing terinfeksi mengandung virus pada traktus respirasi bagian atas dan bawah serta limfonoduli sampai hari ke 9 setelah infeksi. Penyebaran virus antar anjing terjadi secara aerogen.
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