STRUKTUR KOMUNITAS, TUTUPAN DAN KUALITAS AIR MANGROVE DI KAWASAN PESISIR KECAMATAN KWANYAR KABUPATEN BANGKALAN

Abstract

Damage to the environment and resources in coastal and marine areas in coastal areas, especially in the southern coast of Bangkalan District, has shown alarming conditions. Given the importance of ecosystem values in supporting the preservation of coastal resources, so does the threat to sustainability. The purpose of this studycommunity structure, distribution patterns (is), diversity index (h '), uniformity index (e) and dominance index (c) of mangroves, percentage of mangrove cover and water quality. The method used is Observe. Diversity index (H ') results for all stations in the low category except station 1 in the medium category. Diversity index at low conditions except station 1 at moderate conditions. All uniform indices are uneven. Dominance index is low except station 2 and 4 in medium condition. The highest mangrove canopy cover at station 3 reached 77.75% for station 5 at 77.78%, so the mangrove damage criteria were included in the categoryvery dense ≥75% and sedang 75%. PH values ranged from 6.2 to 8.1, temperature with a range of 23, -31.9 0C, dissolved oxygen (DO) in the range of 2.11-5.5 mg / l, salinity in the range of 29-40 ppt, TSS in the range 0.388-10.334 mg / l, phosphate in the range 0.307-6.88 mg / l, and nitrate in the range 0.064-0.336 mg / l