Diversity of Crabs (Brachyura) and Association of Crabs (Brachyura) with Mangroves in Gerupuk Coast of Central Lombok

Mangroves have a function as shelters, nurturing places, spawning grounds, and foraging can be habitat for wild animals. Brachyura is one of the mangrove biota associations whose lives are influenced by existence mangroves. Therefore, purpose this study to determine diversity crabs (Brachyura) relationship between density crab abundance in coastal area Gerupuk Beach Central Lombok. The sampled were contained observation plot, on surface substrate was taken hand, while those hole with help shovel. data obtained then analyzed Pearson index, association, correlation coefficient. Furthermore, simple linear regression analysis carried out independent variable (x) dependent (y) (Brachyura). results 7 species consisting 6 family Ocypodidae 1 Grapsidae. index at research station moderate high values 1.7-4.0. there 3 associated 2 mangroves found. equation y= 0.2619x + 0.0206 pearson coefficient value (r) 0.79 shows strong independek abundance. conclusion that included medium category significant