| dc.description.abstract | The research activity on the Diversity, Abundance,
Uniformity, and Dominance of Plankton in the Batu Bumbun
Reservat aims to determine the potential of plankton as natural
food for fish in a waters that serves as a fishery reserve. Batu
Bumbun Reservation is a freshwater reserve that is used as a
fishery reserve, located in Muara Muntai District which borders
on the bay (Ulak Banda), namely from Muara Tawar, Sungai
Tawar and its surroundings to Lake Batu Bumbun, from Muara
Sungai Muntai, Labak Beto to Tanjung Kemujan, Keluang river
and its surroundings. The total area of the location is about 450
Ha. The methodology used is the survey method. Research
activities are carried out from February to April 2021 for
sampling and analysis in the laboratory. Water environment
data includes data on physical, chemical and biological
parameters. Physical parameters measured are: temperature,
brightness, and depth. Chemical parameters to be taken are: pH,
DO, and Alkalinity. The biological parameter to be taken is
plankton. The results of the research on Plankton found in the
Batu Bumbun reserve are 64 species which are divided into 10
classes consisting of 6 classes of phytoplankton, namely:
Bacillariophyceae, Chlorophyceae, Cyanophyceae, Euglenaceae,
Myxophyceae and Xanthophyceae and 4 classes of zoo plankton,
namely: Crustacea, Ciliata, Lobosa and Monogononta. The total
value of plankton abundance obtained during the study at
station 1 was 56,852 individuals/liter, station 2 was 38,552
individuals/liter and station 3 was 54,107 individuals/liter. The
highest diversity index value (H') is found at station 1 of 3.4376
and the lowest diversity index value (H') is at station 2 of 2.8585.
The range of diversity index (H') at 3 stations ranged from
2.8585 to 3.4376 which was classified as good and stable
diversity. The highest uniformity index value (E) is at station 3 of
0.9152 and the lowest uniformity value (E) is at station 2 of
0.7916. The range of the uniformity index (E) at the 3 stations
ranged from 0.7916 to 0.9152 so that at the 3 stations the
distribution of individuals was fairly even at each station. The
value of the dominance index (D') at the 3 stations ranged from
0.0399 to 0.1100 which indicated that the number of individuals
for each species was almost the same and that there were no
species that dominated other species or in other words the
community structure was in a stable condition.This condition is
very important considering Batu Bumbun is a fishery reserve
that must provide fish as an economic source for the surrounding
community and as a source of food for protected mammals,
namely the Mahakam Pesut (Orcaellabrevirostris). | en_US |
