STUDI KOMUNITAS MAKROFITA LITORAL DI PERMUKAAN PERAIRAN DANAU DENDAM TAK SUDAH KOTA BENGKULU

Abstract

Study of Littoral Macrophytes  community at waters of Dendam Tak Sudah Lake Bengkulu  City has been conducted at three sites from September  through December 2011. The purpose of this study was to determine the species composition and community of litoral macrophytes  at waters of the lake. The sites/spot sampling area were determined by using purposive sampling : SITE I (Crinum community), SITE II (Cyperus community) and  SITE III (Metroxylon sago community) data was collected by using Squares method. The data observed was density, frequency, important value index, and diversity index. The Abiotic factors such as temperature, humidity, dissolved oxygen, water acidity, were also measured. Specimens collected was  documented by digital camera, and herbarium. Makrophyte  identification was held at Biology Laboratory of Bengkulu University. It was found 25 species of litoral makrophytes that grouped into 4 classes, 13 orders, and 15 families. The highest value of macrophytes density was at site II (11.806 individuals / m2) and the lowest value of macrophytes density was at site III (6.83 individuals / m2). The highest important value of macrophytes was at location I (199.03%) and the lowest important value of macrophytes was at location II (194.52%). The highest of macrophytes Diversity Index (H ') was at site II (H '=1.89 ) and the lowest macrophytes Diversity Index was at site III ( H ':1.52)

Keywords: community, litoral macrophyte, Dendam Tak Sudah Lake, Bengkulu