Erly Kaligis
FPIK UNSRAT Manado

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KELIMPAHAN DAN KEANEKARAGAMAN JENIS-JENIS KEPITING DI SUBSTRAT MANGROVE PERAIRAN MERAS DAN MOLAS KECAMATAN BUNAKEN KOTA MANADO SULAWESI UTARA Rivaldo A Wuisan; Erly Kaligis
JURNAL PESISIR DAN LAUT TROPIS Vol. 9 No. 2 (2021): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.9.2.2021.34951

Abstract

Crab of the genus Uca is one type of crustacean that makes mangroves a habitat to carry out their life cycle in order to remain sustainable. The purpose of this research is to identify the first, the second is to calculate the abundance, species diversity, dominance, and the third is to know the state of the aquatic environment around pH, temperature, salinity and substrate. The method used is the cruising method and the quadratic line transect method. The method of roaming as far as 300 m. While the line transect method is carried out by drawing three transect lines along 28 m. The identification results in Meras waters found 6 species. Based on data analysis using the cruising method, the number of individuals in Meras waters is 383 individuals, while in Molas waters there are 210 individuals. Based on data analysis using the quadratic line transect method, the species abundance index in Meras waters is 6,767 ind/m2, while in Molas waters it is 4,533 ind/m2. The value of H' at two locations is moderate. The value of C in two locations is low.   Keywords: Meras, Molas, Crabs, abundance, species diversity, dominance.
JENIS IKAN LAUT DALAM DI PERAIRAN TELUK MANADO SULAWESI UTARA Erly Kaligis
JURNAL PESISIR DAN LAUT TROPIS Vol. 8 No. 3 (2020): JURNAL PESISIR DAN LAUT TROPIS
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jplt.8.3.2020.41560

Abstract

The aims of this study was to determine the types of fish in the deep sea ecosystem in the Manado Bay area, and to measure the water quality (temperature and salinity) at the study site. The study began with exploration of deep sea locations in Manado Bay, then determined the location of the station consisting of 3 fishing points determined randomly. Determination of depth using the Fish Finder. The method used in obtaining deep sea fish species is the Jigging technique. This technique uses artificial bait with a base of tin, stainless steel wire and a hologram. Some of the data measured from the research are fish species, morphometrics, and water quality. Based on water quality data (temperature and salinity), the waters of Manado Bay have sea surface temperatures ranging from 28.00C and 29.70C and surface salinity in the waters ranges from 33.19 ppt and 34.67 ppt. The types of deep sea fish obtained were 7 species spread out at station 1 there were 4 species consisting of Brama australis, Thysites atun, Lepidocybium flavobrunneum, Sphyraena barracuda, Gymnosarda unicolor, Carcharodon carcharias, Gempylus serpens. The number of fish recorded from the research is 41 individuals. The most common type found was Thyrsites atun, which consisted of 25 individuals spread out at stations 2 and 3.Keywords: fish in the deep sea, Jigging technique, temperature, salinityÂ