| dc.description.abstract | The diversity of Macrozoobenthic in Downstream of Padang River Subdistrict of
Medang Deras Distrisct of Batubara, has been observed.The sample was taken from
five stations of observation, fourteen replications were conducted in each station. The
point of sampling was determined by using Purposive Sampling Method. The samples
was taken by using surber net and the sample was then identified in Management
Laboratory of Natural Resource and Environment, Study Program of Biology, Faculty
of Mathematics and Natural Science, University of North Sumatera, Medan. The
result of research indicated 13 genus of macrozoobenthic consisting of 11 families, 7
orders, and 5 class. The highest density was found in genus of Faunus, 191,11 ind/m2
(station I), and. The lowest was found in genus of Cardisoma, Mactra sp2, and
Rhabdolaimus, 0,74 ind/m2. The highest diversity index of macrozoobenthic was
found in station 5, about 1,51 and the lowest one was in station 4, about 0,51. The
highest uniformity index (E) was found in station 2, about 0,96 and the lowest one
was in station 4, about 0,37. | en_US |
