This study was conducted to determine the diversity of vegetation species that compose mangrove forests in the village of Medan Mas, Kubu Raya Regency. Measured parameters of important value index , dominance index (C), species richness index (RI), species evenness index (e) was carried out using the survey method by means of a plot. The placement of the research path was done (purposive ). The path made in this study is 10 meters wide (5 m to the left 5 m to the right) and the path length is adjusted to the conditions in the field to the river boundary. From the pathway, a sub-plot is made with a size of 10 m x 10 m for the tree level, and 5 m x 5 m for the sapling level and 2 x 2 for the seedling level. The results of this study indicate that the types found in the field amounted to 12 species for seedlings, 10 species for saplings and 9 species for trees. . Based on the results of the data obtained, it is known that the index value of species diversity (H) at seedling, sapling and tree levels shows a number <1. This means that the value of species diversity found in mangrove forests in Medan Mas Village is relatively low. Forests with low species diversity values indicate that the forest area has experienced forest disturbance or damage. When data collection is carried out in the field, there are several locations that experience disruption or damage in the form of logged-over or transfer functions as shrimp ponds.Keywords: Mangrove Forest, Vegetation Diversity

The decline in the population of green sea turtles (Chelonia mydas) occurs continuously due to the destruction of the nesting beach habitat, therefore efforts are needed to increase the green sea turtle population by rearranging nesting sites. One thing that is considered important from the green sea turtle nesting habitat is the coastal vegetation. This research was conducted in Tanjung Belimbing Nature Tourism Park, Sambas Regency, West Kalimantan Province. This study aims to obtain information on vegetation conditions that are preferred by green sea turtles to lay eggs through the number of nesting sites approach. The method used is a survey method. Data collection was carried out by direct observation in the field. In this study, 12 nesting sites were found spread over four observation sites, with the highest number of nesting site found at observation location 1 as many as 8 nesting sites. At observation location 1, besides cemara laut (Casuarina equisetifolia) and pandan laut (Pandanus tectorius) also found waru (Hibiscus tiliaceus) and api-api (Avicennia sp) as well as shrub plants such as kamboja laut (Scaevola taccada), serunai laut (Melanthera biflora) ) and herbal plants such as tapak kuda (Ipomoea pes-caprae), alaban tanah (Vitex rotundifolia), rumput tembaga (Ischaemum muticum), bayam berduri (Amaranthus sp) and bakung laut (Crynum asiaticum L).Keywords: Nesting Sites, Vegetation, Green sea turtle, Tanjung Belimbing Nature Tourism Park

Long-tailed macaque (Macaca fascicularis) are one of the primates that are quite widespread in Indonesia, one of its in the area of Teluk Akar Bergantung city forest on Ketapang, West Kalimantan. This study aims to obtain data on the number of groups, number of individuals, population density, and structure of long-tailed macaque populations in the region using the line transects method and concentration count method. At the 95% confidence interval, the number of individuals ranged from -1,38 ind/ha to 30,20 ind/ha and the number of groups ranged from 0,72 groups/ha to 2,70 groups/ha. Population individual densities ranged from -0,39 ind/ha to 8,83 ind/ha and population group densities ranged from 0,21 groups/ha to 0,79 groups/ha. Structure of long-tailed macaque in the area of Teluk Akar Bergantung city forest on Ketapang, consists of 7,67 individuals of adult male, 9 individuals of adult female, 23,67 individuals of adolescent and 1,33 individual of children. Factors that affect the stability of long-tailed macaque populations include environmental conditions, types of feed, movement, interaction with other animals and the presence of predators.Keywords: Long-tailed macaque, population density, population structure, Teluk Akar Bergantung city forest.

Mangrove ecosystems are the wetland resources of the region and the life support system and high value natural wealth, therefore it is necessary to protect, preserve and sustainably use for the welfare of the community. The purpose of this study was to determine the public perception of the existence of a mangrove forest in the Sungai Kunyit Laut village, Mempawah district and factors that influence. The method based on survey and sampling techniques or interviews the respondents conducted by purposive sampling. The number of respondents were 79 respondents. The results showed the level of public perception to the existence of a mangrove forest in the Sungai Kunyit laut village tend to be higher as many as 62 respondents (78,48%) have a high perception of the existence of a community forest in the Sungai Kunyit Laut village, 16 respondents (20,25%) perceive moderate and 1 responden (1,27%) respondents who had a low perception. And the analysis shows that the level of education, income and cosmopolitan do not have a correlation with the level of public perception to the existence of a mangrove forest. But the level of age have a correlation with people’s perception of the existence of mangrove forest. Keywords: District Mempawah, Mangrove forests, Public perception

Ants have an important role in an ecosystem such as seed spreaders, pollinators, decomposers, and soil growers. Ants can live on peatlands that have acidic pH. The new building of the Faculty of Forestry is an area of peatland where there is one of the fauna, namely ants. The ants in the environment of the Faculty of Forestry’s new biulding are unknown. The research aims to record the types of ants found on peatland in the environment of the new building of the Faculty of Forestry, Tanjungpura University. Takingthe samples of ants was done with sifting hand collecting and leaf litter sifting methods. This study found 4 subfamilies and 7 genera of ants. The subfamilies found were Subfamily Formicinae consisting of the genera Anoplolepis, Camponotus, Echinopla, and Polyrhachis, Subfamily Ponerinae consisting of Genus Diacamma; Subfamily Pseudomyrmecinae consisting of genus Tetraponera; and Subfamily Myrmicinae consisting of the Crematogaster Genus. Diversity index has a value of H ̅ = 1.44 which indicates that the research location has moderate diversity. The overall index of species richness has a DMg value = 5.58 indicating the wealth of ant species is in the high category. Evenness index with a value of 0.73, evenness of ant species is quite even.  Keywords: Diversity of ants, Faculty of Forestry, Family Formicidae, Peatlands