Distribusi dan Keanekaragaman Makrozoobentos

This research aims to determine metal pollution in the Marbau river basin in North Labuhanbatu Regency. Sampling was carried out at 3 monitoring points in the upstream to downstream areas of the Marbau River in North Labuhanbatu Regency. Determination of sample return points. The method used is purposive sampling, by determining sampling points based on the differences in characteristics found in the research area. Some of the parameters measured are temperature, conductivity, turbidity, total dissolved density, BOD, COD, DO, pH, nitrate and chlorophyll which are then compared with the Standard Criteria for Class III river water quality according to the attachment to the reference regulation PerMenKes No.32 of 2017. The research results show that the upstream to downstream areas of the Marbau River are areas that can be categorized as low level pollution referring to PP RI NO 82 TAHUN 2001 with the specified quality standard for the heavy metal lead being 0.003 ppm. The conclusion of the analysis of the heavy metal lead (PB) from upstream to downstream of the Marbau River shows that the heavy metal lead (PB) pollution in the river is still relatively low or has not been contaminated by the heavy metal lead (PB). Keywords: Labuhanbatu, Marbau, Water Pollution

Section: Pendahuluanunclassified

Pencemaran dari Segi Logam di Sungai

Rahayu,

Harahap

2023

“…Sungai yakni salah satu ekosistem perairan yang memiliki manfaat besar buat mahluk hidup. Sungai yakni sumber air permukaan yang memiliki manfaat buat kehidupan manusia (Sintia & Arman, 2022). Sungai memiliki khasiat besar untuk makluk hidup.…”

Section: Pendahuluanunclassified

“…Sungai barumun mengalir di selama daerah kecamatan panai hulu kabupaten labuhan batu. Sungai berumun ialah sungai besar dengan lebar antara 750 meter-1050 meter, dengan sungai kecil selaku anak sungai/ cabang dengan ekosistem tepi laut yang terdiri atas berpasir, berlumpur serta berbatuan (Sintia & Arman, 2022).…”

Section: Pendahuluanunclassified

Studi Spesies Gastropoda di Perairan Sungai Berumun

Nurlina,

Harahap

2023

The aim of the Gastropod species study is to determine the diversity and density of Gastropods and the environmental conditions that influence the development of gastropods in berumun rivers. The research method used in this study of gastropod species is to provide descriptive information about the diversity of gastropod species in the Berumun river, Panai Hulu sub-district, Labuhan Batu district. The results of temperature measurements at the observation station in Sungai Berumun, Panai Hulu District, Labuhan Batu Regency, showed that the highest pH was at the third station, 7.40, while the lowest pH was at the first station, namely 7.1. From the results of the study, it was concluded that there are 15 species of macrozoobenthos found in the Barumun River which belong to 5 families, namely: 1. Potamididae, Cerithidae obtusa, Cerithidae alata, Cerithidae cingulata, Telescopium mauritsi, Telescopium telescopium, 2. Littorinidae, Littoraria melanostoma, Littoraria conica, Littoraria scabra, 3. Neritidae, Nerita balteata, Neritina violacea, Neritina cornucopia, 4. Muricidae, Stramonita gradata, Chicoreus capucinus, 5. Ellobiidae, Cassidula aurisfelis, Ellobium aurisjudae. Keywords: Gastropods, Diversity

“…Sungai merupakan salah satu bentuk ekosistem perairan terbuka yang juga rawan dengan adanya suatu pencemaran (Ananta & Harahap, 2022). Pencemaran yang terjadi pada suatu sungai umumnya disebabkan oleh kondisi lingkungan serta aktivitas manusia di sekitar sungai.…”

unclassified

Studi Keanekeragaman Mikroalga di Perairan Sungai Barumun

Fauzi Pane,

Harahap

2023

This study aims to determine the diversity of microalgae in the waters of the Barumun River as basic data. This study conducted a survey on the diversity of microalgae in the waters of the Barumun River which is located in Panai Hulu Regency, Labuhanbatu Regency, North Sumatra Province from October to December 2022. The method used is exploration. Determination of the sampling was carried out by systematic purposive sampling. Sampling was carried out through three points, namely the upstream, middle and downstream of the Barumun River. This study found 47 species of microalgae belonging to 42 genera and 27 orders, members of Chlorophyta and Bacillariophyceae as the most abundant microalgae. At point 1 found 36 species, while at point 2 found 30 species, and at point 3 as many as 22 species. The physicochemical factors of the Barumun River waters were also measured, the average water temperature was 27 RAM C, the average pH was 6.7, and the average water brightness was 57 cm. This study concluded that environmental factors greatly affect the diversity of microalgae in the Barumun River waters. Keywords: Diversity, Microalgae, Barumun River