Abstrak
Mangrove forest is one of the mangrove crab habitats which is used as a spawning and rearing area. The purpose of the study was to analyze the relationship between mangrove density and the abundance of mangrove crabs in the Mangrove and Crab Conservation Area, Pamusian Village, Tarakan City. The sampling method used is purposive sampling method. carried out at 3 (three) station points and each station consists of 3 plots. In each plot, 2 folding traps were installed. The results showed that the highest density of mangrove species was from the mangrove species Rhizophora mucronata, while the lowest density was from the mangrove species Lumnitzera racemosa. The highest abundance of mangrove crabs was at station 3 and the lowest was at station 2. The correlation between mangrove density and mangrove crab (Scylla serrata) was found to have a tree-level correlation with an R2 value of 0.626 (Strong), tiller level with an R2 value of 0.041 (Very weak). and the seedling level with an R2 value of 0.227 (very weak). The effect of mangrove density on mangrove crabs using a simple linear regression test of 0.65 which means that the relationship between mangroves and mangrove crabs is quite strong, namely 65% while 35% is influenced by other factors.