Judul: Peran Hutan Kota Dalam Perbaikan Iklim Mikro di Kota Malang Jawa Timur
Abstrak: Physical development for urban infrastructure gives an impact of reducing the green open area. This situation led to an increasing of air temperature, makes the urban environment is getting warmer. One of the solution to lower the air temperature is developing an area of open green spaces, specifically urban forest. Urban forest is an approaching and the implementation of one or more functions in a group of forest vegetation at urban areas that have specific purpose such as protection, recreation, aesthetics, and other utility functions for the benefit of urban communities. The comfort index of some urban forest and city park in the city of Malang is currently at a comfortable level (IK value = 21-24), then the management of urban forest need to be more intensive and effective such as to select tree species that are capable and have a big impact on air quality for create a microclimate and makes the area to become more comfortable.
Keyword: urban forest., micro-climate, comfort index

Judul: Pemodelan hutan kota untuk ameliorasi iklim mikro di Kota Palu
Abstrak: Climate characteristic of Palu city is very specific, which is indicated by high air temperature and low precipitation. The objectives of research are : (1) to analyze the dynamics of changes in area and distribution of land cover types in Palu, (2) to analyze the relationships between dynamics of greenery open space area, temperature distribution, and the role and needs of urban forest to improve microclimate in Palu, (3) to develope dynamics model system of urban forest for micro climate amelioration, (4) to formulate policies that can be recommended for the development of urban forest in Palu. The research was carried out based on field survey, questionnaire, and expert judgement. GIS and Arcview approaches for spatial dynamic analysis, to develop dynamics model system of urban forest using program powersim studio expert 2005 version, to formulate policies that can be recommended for the development of the urban forest using policy analysis with AHP. The results obtained are: (1) for 13 years from 1997 up to 2010 was found that greenery open spaces have decreased from 80.4 % to 78.8 %, (2) the increasing greenery open spaces will decrease the maximum of air temperatur, significantly. The regression is Y = -0.1203 X + 39.51 with R2 = 0.503, (3) Based on the model simulation, it is predicted that the urban forest will be decreased in the future, (4) Base on results of AHP, it’s known that needs of settlement is the priority factor, government is the priority actor, environmental sustainability is the priority purpose and to improvement of regulation and the provision of green open spaces and plants were the priority strategy of development of the urban forest in Palu.
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Judul: Estimation of Additive and Non-Additive Genetic Variances of Body Weight, Egg Weight and Egg Production for Quails (Coturnix coturnix japonica) with an Animal Model Analysis
Abstrak: This study estimates the additive and non-additive variances for egg production and body weight traits of two lines of quails from a long-term selection with the help of the REML method. For the body weight of 42-day-old females (BW42f) and males (BW42m), a total of 7,934 records for line 1 and 7,214 records for line 2 from 21 generations were used in our analyses. Additionally, 1,717 records of females from line 1 and 1,671 records of females from line 2 contained information on their egg production at an age of 42 to 200 days (EN200), on the average egg weight for the first 11 weeks of their laying season (EW1), on the average egg weight from weeks 12 to 23 (EW2), and on their body weight at an age of 200 days (BW200f). A multivariate additive animal model and one-trait dominance models, which include the inbreeding coefficients as covariates, were fitted to the data. The estimates of the heritability gained from our dominance models were smaller than those from the additive model. For line 1, the heritability values decreased for EN200 from 0.35 to 0.32, for EW1 from 0.66 to 0.56, for BW200f from 0.42 to 0.38, and for BW200m from 0.51 to 0.49, respectively. For the first line, the respective ratio (d2) of the dominance variance to the phenotypic variance for EN200, EW1, BW200f and BW200m was 0.08, 0.22, 0.09 and 0.21, and the values for the second line were 0.12, 0.06, 0.001 and 0.23.
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