Long-tailed macaques are highly adaptive in various types of habitats. Their behaviour who are accustomed to living in groups with specific activities greatly affects the home range in getting food. They have ecological and cultural values for a particular community; unfortunately, it was well known as an agricultural crop pest. Quality of the habitat to be one determinant factor of macaques disruptions. The purposes of the study are to understand the conditions of conflict humans and macaques in Central Java that used as a reference in determining solutions. Data analyzed descriptively from various reports and research findings. The data collected identified from 2011 to 2019. Disturbance of long-tailed macaque in Central Java occurs at least 15 regencies with the population reaching thousands of individuals of damage to crops and even enter settlements. The macaque's behaviour that is considered detrimental causes conflicts with humans which at the end, creating various handling efforts ranging from expulsion to hunting. Some research findings show that people's perceptions of wild animals will affect efforts to resolve or mitigate the problem of human conflict with wildlife and negative attitudes can cause adverse effects for conservation efforts.
The quality of Rawapening waters is constantly changing over time. The bloom growth of water hyacinth, fishery aquaculture activities and environmental pressures are getting heavier as expressed as eutrophication. This will affect in plankton composition. Plankton can provide an indication of changes and environmental quality, especially of its biotic structure and biodiversity. The upper part of Rawapening lake, similar to other part of the lake, is enriched with semi and aquatic plant. The purpose of this research is to analyze the condition of plankton currently, so that it can understand the change of water quality to support lake and fishery managements. The study was conducted in June 2018 on the upper parts of Rawapening Lake, particularly the southern side where many spring waters appear. Plankton collection was done by sampling using plankton net no 25. Data analysis was conducted descriptively and semi-quantitative using community structure including diversity, evenness and domination indices. The results showed that common plankton species found were Melosira sp, Synedra sp and Chlorella sp. Aulacosiera sp is quite abundant in all five stations reaching a range of 34-153 individuals / lt. In term of ecosystem stability, the waters are qualified as small to moderate stability conditions (H index :1.04 - 2.18) The species abundance tend to be small, especially in the spring station, which is associated with low water nutrients from springs. Aulacosiera sp is still dominate the plankton component for some station. The species which previously experienced a high domination, especially the Aulacoseir
a spp, change into a minority. This condition is mainly related to the changing physical condition of environmental. This, at a glance shows that the former water source area is still in good quality at this time experiencing enrichment. This is related to the increasing fishery practices of floating cage net of cultivation area approaching the spring water areas. The limitation and regulation in this area are urgently implemented and enforced, because clean water supply is important for the supply and circulation, which is not only for culture practice but also the lake in general.
The emergence of the tourism era 4.0 is the impact of the 4.0 industrial revolution in the tourism sector. This era was marked by the ease of access to information through digital media. Marine Ecotourism is a tourism activity that reflects cultural heritage, participation, and welfare of local residents also efforts to conserve natural and environmental resources, especially in coastal and island areas. This study aims to determine the suitability of the Lengkuas Island tourist area and the strategy of management and development of Lengkuas Island object. This research was conducted in February - April 2019 on Lengkuas Island, Sijuk District, Belitung Regency, Bangka Belitung Province. Travel suitability measurements based on parameters in the specified matrix will then be adjusted to the Tourism Suitability Index. Variables that will be used consist of, water depth, beach type, beach brightness, beach width, beach slope, current velocity, land cover, dangerous biota, water base material, clean water availability. The results show that Stations 1 (97.6%), II (94%), and III (94%) are very suitable for the category of recreation and swimming. Stations IV (19), V (19), And VI (19) are very suitable for tourist activities especially boating, banana boating, canoeing, and jet skiing.
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