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All Journal Ilmu Perikanan Tropis Nusantara
Jailani Jailani
Mulawarman University
Agriculture, Biological Sciences & Forestry

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Community structure of phytoplankton in seagrass beds in the waters of Balikpapan City Bay, East Kalimantan Shavira Malianda Sari; Jailani Jailani; Nurfadilah Nurfadilah
Jurnal Ilmu Perikanan Tropis Nusantara (Nusantara Tropical Fisheries Science Journal) Vol. 3 No. 1 (2024): Nusantara Tropical Fisheries Science
Publisher : Faculty of Fisheries and Marine Science, Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jipt.v3i1.681

Abstract

Seagrasses are flowering plants that live in shallow waters and form an ecological community which is a place for biotic and abiotic interactions. The structure of the phytoplankton community consists of individual arrangements of various types and species that are organized to form a community. Phytoplankton are autotrophic organisms and primary producers in the marine food chain. The purpose of this study was to determine the abundance of phytoplankton, uniformity and dominance values. Measurement of water quality parameters was carried out at the Water Quality Laboratory, Faculty of Fisheries and Marine Sciences, Mulawarman University from November to December. Determination of research locations using the method of consideration (purposive sampling method). Sedgewick-Rafter method was applied for the identification stage. The data were analyzed by calculating the abundance of phytoplankton, diversity index, uniformity index and dominance index, then the data were analyzed using Microsoft Excel. The abundance of phytoplankton ranged from 2772 - 1575 individuals/L. While the diversity index values ​​ranged from 2.79 - 2.57, the uniformity index values ​​ranged from 0.74 - 0.80 and the dominance index values ​​ranged from 0.10 - 0.11.
Community structure of zooplankton in seagrass beds in the bay of Balikpapan City, East Kalimantan Aprilia Kartini Putri; Jailani Jailani; Nurfadilah Nurfadilah
Jurnal Ilmu Perikanan Tropis Nusantara (Nusantara Tropical Fisheries Science Journal) Vol. 3 No. 1 (2024): Nusantara Tropical Fisheries Science
Publisher : Faculty of Fisheries and Marine Science, Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jipt.v3i1.682

Abstract

Zooplankton is a component in the food chain that has an important role in the production value of an ecosystem, this is because zooplankton is the main connecting link between phytoplankton and nekton. The purpose of this study was to determine the types of zooplankton found in the seagrass beds of Balikpapan Bay and to determine the value of diversity, uniformity and dominance of zooplankton in the waters of Balikpapan Bay. Measurement of water quality parameters was carried out at the Water Quality Laboratory of the Faculty of Fisheries and Marine Sciences. This research was conducted in November - December 2022 in the waters of the Bay of Balikpapan City using the consideration method (Purposive Sampling Method) to determine the research station and use the method Sedgewick Rafter for the identification stage the data were analyzed by calculating zooplankton abundance, diversity index, uniformity index and dominance index, then the data were analyzed using Microsoft Excel. The abundance of zooplankton in the waters of Balikpapan City Bay consisted of 2 classes, namely copepods and oligotrichea, while for the abundance of zooplankton the results were different at station 1, the value was 1134 ind/L at station 2, the result was 567 ind/L and at station 3, the value was obtained 252 ind/L for station 1 and 2 of the highest species is the crime of murderand at station 3 the highest species Tintinnopsis open. The diversity index value in Balikpapan Bay waters is categorized as moderate species, the uniformity index value in Balikpapan Bay waters is categorized as relatively stable and the dominance index value in Balikpapan Bay waters is categorized as no dominant species.
Co-Authors Aprilia Kartini Putri Nurfadilah Nurfadilah Shavira Malianda Sari