The ecotourism is global issues who most talked lately in Indonesia, it is one of the activities special tourist interest which low impacts on natural tourism.The presence of ecotourism in the era of sustainable and tourism development mission should be minimum negative impacts, both on the environment resources and on socio-cultural local values. Ecotourism activities were more oriented on the utilization of natural resources, the natural ecosystems and have not been polluted yet. However, when all of tourism development can not be separated from the negative impacts, such as ecosystem distress in ecotourism object when visited by large number of tourists, there are many conflicts of interest between the ecotourism management with local communities, especially regarding the benefits sharing and its accessibilities. The purpose of this paper is to identify the environmental impacts arising as a result of ecotourism activities and to find out alternative efforts in mitigating the environmental impact of ecotourism activities. Carrying capacity of ecotourism is not just limited to the number of visits, but also covers other aspects, such as: (1) ecological capacity that is ability of natural environment in providing the needs of tourists, (2) physical capacity, that is ability of facilities and infrastructure in providing the needs of tourists, (3) social capacity, that is ability to absorb tourism activities without the negative impacts on the local communities, (4) the economic capacity, that is ability to absorb destination commercial efforts and accommodateany interests of the local economy.

The aim of the study is to define the strategic management of nature based tourism in Ijen crater, East Java. From the perspectives of accessibility, problems facing by accessibility are related to the travel distance and forest road quality. Ijen craters have three important aspect in competitiveness tourism aspect, namely something to see (mountain landscape), something to do (trekking, hiking, bird watching), and something to buy (meals). The future development of such attraction should be meets ecotourism principles. This study found that improving tourism facility and infrastructure were important aspects. The development and improvement of tourism facility and infrastructure, however, should be incorporates ecotourism principles. In such a case, the conservation, local people and community development becomes crucial issue. Involvement of stakeholder and local community in facility and infrastructure will increase the quality and sustainability of infrastructure and tourism facility.

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The main problem of the use of N fertilizer in paddy soil Vertisols is the low efficiency. Ureahumic acid applications at certain dosage are believed to increase rice growth and production. This study was aimed to examine the effect of urea and urea-humic acid to the amount and form of N-available, N uptake, plant growth, and the production of rice. Five dosage levels of urea-humic acid were applied for rice on Vertisols. Results of the research showed that the urea-humic acid fertilizer could increase the content of N-NH4 + soil at 28 days and N-NO3 -soil at 42 days. The urea-humic acid could improve plant height, number of tillers, and total dry weight. The highest rice production is achieved by 100% humic acid-urea, especially on parameters of dry weight effectively harvested and effectively milled, with 5.56 tons and 4.61 tons per hectare respectively. Correlation between soil N-NO3 -level with soil N-NH4 + level was significant at p = 0.05 (r = 0.871). Efficiency of urea-humic acid fertilizer at 100% recommended dosage (200 kg urea-humic acid) to the dry weight of effectively harvested crop with dry weight of effectively milled crop was 22% compared to the recommended urea fertilizer (200 kg ha -1 ).

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This research was conducted to (1) analyze the household waste management system, and (2) develop a strategy for household waste management in Suzuki Resident, Watutumou III Village, Kalawat District, getting in the era of "New Normal". This research uses quantitative methods with SWOT and AHP ((Analytical Hierarchy Process) techniques. The results show that the Waste Management system has Strength, such as the efforts to apply the 3R concept (Reduce, Reuse, and Recycle), waste management fees, and improvement, facilities and infrastructure, strengthening public understanding, support from local government and APBD (Local Government Budget) of North Minahasa Regency. The waste management system has several weaknesses, such as (1) lack of facilities and infrastructure for trash bins, the absence of 3R Landfill in residential areas, and limited human resource capacity toward waste management Opportunities which is faced by the waste management system including support for provincial government policies, facilitating the marketing of waste management products that are economically valuable. Threats which are faced are the increasing volume of waste, not optimal waste management and sorting, people behavior of littering. Based on these conditions, the priority of the Household Waste Management Strategy is to improve facilities and infrastructure to support waste management. The current strategy for developing a household waste management system is in quadrant IV that is diversifying the use of force and creating more opportunities. Strategic steps in managing household waste in Suzuki Resident, Watutumou III Village, Kalawat District, getting in the era of "New Normal, are improving existing facilities and infrastructure and adding to those that do not exist, optimizing waste retribution to support waste management costs, gathering support from stakeholders who related, strengthening public understanding of household waste management, and promoting efforts to apply the 3R concept in household waste management.

Local culture and traditions have been considered as an important factor in influencing plant species diversity and composition of home garden, but their interactive effect have not yet been investigated. This research aimed to describe the plant species diversity in traditional home gardens, identify the species with important value based on ethnobotanical indices, and describe the perception of local people towards agroforestry conservation in Osingnese Villages in Banyuwangi. Data acquisition was performed at Kopen Dukuh, Buluhsari-Kopen Cungking, and Kemiren Villages. Floristic survey was implemented at 75 home gardens. An interview was implemented for each owner. Results showed that Osingnese home gardens consist of numerous plant species. Kopen Dukuh and Buluhsari-Kopen Cungking showed a complex structure which could be considered as a complex agroforestry. Cocos nucifera, Coffea canephora, Coffea liberica, Garcinia mangostana, and Durio zibethinus were the important species in complex agroforestry. Those species composition indicated that home gardens are able to conserve native plants of Malaysian regions, particularly Indonesian flora. Agroforestry knowledge was derived from the older generations and implemented in gardening practices. They also argued that recent agroforestry is an adaptation mechanism of land management. The government did not contribute to educate and empower local people about agroforestry practices.

Abstract. Tony F, Soemarno, Wiadnya DGR, Hakim L. 2020. Diversity of reef fish in Halang Melingkau Island, South Kalimantan, Indonesia. Biodiversitas 21: 4804-4812. Reef fish is one benchmark to determine a coral reef ecosystem's biodiversity. Reef fish communities are important in coral reef ecosystems because of their trophic relationships with other biotic components. The aim of this study was to determine the biodiversity of reef fish on Halang Melingkau Island, Kotabaru District, South Kalimantan, Indonesia. This research was conducted in March-August 2019. Coral reef fish data were collected using an underwater visual census method. Transects were applied as close as possible to the substrate using a 50 m roll-up measuring tape. Three transects were applied at each station. A total of 98 reef fish species from 19 families were recorded in this study. The fish community in Halang Melingkau island belongs to the family of Pomacentridae, Labridae, Chaetodontidae, Scaridae, Haemulidae, Lutjanidae, Scolopsidae, Serranidae, Caesionidae, Holocentridae, Siganidae, Pomacanthidae, Apogonidae, Pempheridae, Scorpaenidae, Tetraodontidae, Blenniidae, Platacidae, and Zanclidae. The highest abundance of reef fish was 1.88 ind/m2, and the lowest was 0.14 ind/m2. The dominance index (C) ranged from 0.03 to 0.13, the homogeneity index (E') ranged from 0.72 and 0.94, and the diversity index (H') ranged from 2.17 to 3.53. Water quality data measurements of temperature, brightness, current speed, pH, and DO (Dissolved Oxygen) were within the tolerance limits of water quality standards based on the Minister of Environment Decree No. 51 of 2004, Republic of Indonesia.