asyuni M, Gultom K, Fitri A, Susetya EA, Wati R, Slamet B, Sulistiyono N, Yusriani E, Balke T, Bunting P. 2018. Diversity and habitat characteristics of macrozoobenthos in the mangrove forest of Lubuk Kertang Village, North Sumatra, Indonesia. Biodiversitas 19: 311-317. Mangrove plays an important role in coastal ecosystems including ecological, social, and economic aspects. This study aimed to determine the diversity of macrozoobenthos and water quality based on diversity index (H’), similarity Index (E), and dominance index (D) in the mangrove of Lubuk Kertang Village North Sumatra, Indonesia. The samples of macrozoobenthos (biological parameter) and water quality (physical and chemical parameters) were collected from fifteen plots in three different stations. Macrozoobenthos were collected in 1 m × 1 m transect in the mangrove forest. The biota was taken by using a shovel, inserted into a plastic bag, and identified. Results showed that eight species of macrozoobenthos were found and classified into three classes of Gastropod, Bivalvia, and Malacostraca. The highest diversity index (H′) of macrozoobenthos was found at Station II (2.39), the highest evenness index (E) was located at Station I (0.54), and the highest dominance index (D) was found at Station II (0.34). Principal component analysis (PCA) was used to determine the habitat characteristics of macrozoobenthos. PCA confirmed that station III was a habitat with suitable characteristics for the life of macrozoobenthos indicating the negative axis. The present study suggested four parameters namely salinity, clay temperature, and dissolved oxygen that should be preserved to support the survival of macrozoobenthos in the mangrove forests.

Partnership arrangement leads to differences in the production and management of mustard farming between partner farmers and non-partner farmers. Partnership can affect input and output prices, cultivation techniques, and productivity of mustard. The objectives of this study were to identify factors that affect farmer participation in partnerships, effects of partnership on efficiency, and factors affecting inefficiency in mustard farming. The research used cross-sectional data from a sample of 70 mustard farmers, consisting of 35 farmers with partnership arrangement and 35 farmers with no partnership. The methods used were logistic regression analysis, stochastic frontier production function, and dual cost function. The research results show that factors affecting farmers to get involved in partnership are productivity and income. By participating in partnerships, farmers' farming will be more technically efficient but allocatively and economically inefficient. Factors affecting technical inefficiency include education, number of family members and participation in partnerships. The results of the research also show that partnerships may create opportunities to the farmers to increase their farming productivity. However, they still need facilitation or assistance from the government or local institutions especially in formulating the contract agreement.

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Partnership is one of the institutions that plays an important role in agricultural development in Indonesia. Contracts in partnerships result in differences in production, productivity, and cultivation techniques. Farmers who have not been able to allocate optimally production factors in their farming production processes will influence the production costs and farmers' income. This study aims to identify factors that influence farmers participating in partnerships, the effect of partnerships on the efficiency of mustard farming, and the factors that influence the inefficiency of mustard farming. This study uses cross section data from 70 samples of mustard farmers, consisting of 35 partner farmers and 35 non-partner farmers. The method used is cost analysis and income analysis. The results showed that the average income of partner farmers for cash costs amounted to Rp 20,932,943 and profits at a total cost of Rp 12,828,443. In non-partner farmers, income from cash costs amounted to Rp. 22,118,483 and revenues from total costs amounted to Rp. 14,492,164. Partner farmer income is lower than non-partner farmers. With participation participating partnering to reduce income because of different input and output prices between partner farmers and non-partner farmers. PENDAHULUANHortikultura merupakan salah satu sub sektor pertanian yang strategis dan penting, karena peranannya sebagai pola pangan harapan. Komoditas hortikultura khususnya sayuran berperan penting untuk keseimbangan pangan yang dikonsumsi, sehingga harus tersedia setiap saat dalam jumlah yang cukup, mutu yang baik, aman dikonsumsi, harga terjangkau, serta dapat di akses oleh lapisan Journal of Food System and Agribusiness

This study aims to identify the functions needed to create a WebGIS system for cash assistance for Air Tenang village, which is then implemented in designing a WebGIS for cash assistance for Air Tenang village. This research is development research, known as Research & Development (R&D) using the waterfall model with stages, namely needs analysis, system design, implementation, system evaluation, operation, and maintenance. The results showed that the functions needed to create a WebGIS for the Air Tenang village assistance service were web-based information communication liaisons between the village and the community, data management included input, edit, and delete functions, submission of assistance, and visualization of the distribution of aid data in the form of interactive maps. WebGIS development for village cash transfer services in the WebGIS system with the domain address http://gisbltdesa.my.id. This WebGIS system has been tested on village communities, and the results show that most respondents consider the work of this system satisfactory and that it can be applied by the village as an alternative to the village cash transfer program.

In the Sekampung watershed, the Sekampung Argoguruh sub-watershed has been planned to be developed into one of the food barn regions, acting as a buffer for the nearby areas. This region is going to be converted from uncultivated to cultivated land in almost all parts. Given the recent developments in that area, it is necessary to determine if the water supply can fulfil the water demand for irrigation. Therefore, this study aims to evaluate the water supply-demand in the Sekampung Argoguruh sub-watershed in order to check the condition of long-term water resources for sustainable water management. In this study, the water supply was estimated by using National Rural Electric Cooperative Association (NRECA) method, while the amount of water required for agriculture and other uses in Sekampung Argoguruh sub-watershed were observed and calculated. The data analysis shows that the average water supply in the Sekampung Argoguruh sub-watershed is around 19.62 m3/s, whereas the average water demand for all activities in that region is roughly 11.65 m3/s. The situation of the water balance can be classified as excess based on the estimation findings, allowing water allocation to be done to satisfy demand.

The rate of waste generation increases along with the pace of urbanization which is accompanied by the acceleration of economic development and rapid technological developments in society. The study location is Barabai Sub-district, one of the sub-districts and the capital of Hulu Sungai Tengah District (HST). The sampling method used the SNI 19-3964-1994 method regarding the method of taking and measuring samples of the generation and composition of urban waste and the approach using Weigh Volume Analysis (WVA). Sampling was carried out on a Dump Truck with a police number DA 926 E, because it can represent the rate of generation of residential waste which is domestic waste. Office waste, school waste and other public facilities that represent the rate of non-domestic waste generation. The conclusion is that the rate of waste generation in Barabai Sub-district is 0,176 kg/person/day. The uncompacted waste density in Barabai Sub-district is 220,95 kg/m3. The composition of the most waste is food waste + yard waste, with a percentage reaching 42,96%. Plastic waste and diapers & sanitary napkins are the most common types of waste after food waste + yard waste, with a percentage of 20% and 17.73%.

Abstrak. Kawasan perkotaan merupakan suatu wilayah yang memiliki kegiatan utama bukan pertanian. Daya tarik kota dapat memikat sebagian besar penduduk desa yang kemudian akan mendorong laju angka urbanisasi. Peningkatan jumlah penduduk di Kota Banda Aceh memicu peningkatan keperluan akan lahan, oleh karenanya, ketersediaan Ruang Terbuka Hijau merupakan suatu hal harus diprioritaskan. Penelitian ini bertujuan untuk memetakan Ruang Terbuka Hijau Eksisting, menganalisis luasan Ruang Terbuka Hijau berdasarkan luasan wilayah dan menganalisis luasan Ruang Terbuka Hijau berdasarkan jumlah penduduk di Kota Banda Aceh. Hasil penelitian ini menunjukkan bahwa luas Ruang Terbuka Hijau eksisting yang tersedia di Kota Banda Aceh seluas 1.219,96 Ha atau 20,38 %. Kemudian hasil analisis untuk luasan Ruang Terbuka Hijau berdasarkan luasan wilayah Kota Banda Aceh memiliki standar yaitu seluas 1.796,26 Ha, dan mendapatkan hasil untuk analisis korelasi nya yaitu berkorelasi. Selanjutnya untuk hasil analisis Ruang Terbuka Hijau berdasarkan jumlah penduduk Kota Banda Aceh memiliki standar yaitu seluas 540,64 Ha dan mendapatkan hasil untuk analisis korelasi nya yaitu tidak berkorelasi. Saat ini Kota Banda Aceh kekurangan Kawasan Ruang Terbuka Hijau seluas 576,30 Ha atau setara dengan 9,62% dari standar 30%  yang ditetapkan pemerintah.The Correlation Analysis of Green Open Space Towards Area and Population in Banda AcehAbstract. An urban area is an area that has non-agricultural main activities. The attractiveness of the city can attract most of the villagers to increase the rate of urbanization. The increase in the population in Banda Aceh City has triggered an increase in the need for land, therefore, the availability of Green Open Space is a matter that must be prioritized. This study aims to map the existing green open space, analyze the area of green open space based on the area and analyze the area of green open space based on the population in Banda Aceh City. The results of this study indicate that the existing Green Open Space available in Banda Aceh City is 1,219.96 Ha or 20.38%. Then the results of the analysis for the area of Green Open Space based on the area of the City of Banda Aceh has a standard that is 1.796.26 Ha, and gets the results for the correlation analysis, which is correlated. Furthermore, the results of the Green Open Space analysis based on the population of Banda Aceh City have a standard area of 540.64 Ha and get the results for the correlation analysis, which is not correlated. Currently, Banda Aceh City lacks a Green Open Space Area of 576.30 Ha or equal to 9.62% of the 30% standard set by the government.