This research aims to determine the density and protein content of riparian Kelakai plants in the Lubuk Siam Lake, Siak Hulu District, Riau Province. This research was carried out in September-October 2024, located in Lubuk Siam Lake, Siak Hulu District. This research uses a survey method, by calculating density using quadrat plots. Meanwhile, protein levels were calculated using the AOAC metho…
Guava leaves is a herbal plant that can be used to improve the immune system of goldfish (Cyprinus carpio). However, that leaf contain antinutrient substances that may alter the health condition of fish. The aim of this research was to obtain the optimal dose of guava leaf powder that was effective to improve the immune system without affecting the goldfish's condition in terms of hematological…
This study aims to identify the types and abundance of marine debris and examine differences in the quantity and diversity of debris across three observation stations at Trikora Beach, Malang Rapat Village. The research was conducted from July to August 2024. Sampling was carried out using a 50 × 100 meter transect technique, divided into five line transects measuring 50 × 20 meters, each con…
Lake Bokuok is an oxbow lake located in Aursati Village, Tambang District, Kampar Regency, Riau Province. This lake has undergone changes due to human activities that have affected the existence of aquatic organisms, including aquatic plants and fish. This study aims to determine the relationship between aquatic plants and fish inLake Bokuok. Data collection was carried out inFebrua…
The purpose of this study was to determine the types and density of gastropods in the seagrass ecosystem in Pengudang Village, Bintan Regency, Riau Islands Province. This study was conducted in September 2024 in the waters of Pengudang Village, Bintan Regency, Riau Islands Province. The method used was a survey method by conducting direct observations and using line transects and 1x1 m2 quadran…
This study aims to analyze water quality and pollution levels in the Air Hitam River, Pekanbaru City, Riau Province using the Canadian Council of Ministers of the Environment Water Quality Index (CCME-WQI). The study was conducted in September 2024 using survey methods and sample collection was conducted via purposive sampling at three stations representing different human activities along the …
Echinoderms are important components in marine food webs. One of them is Asteroidea which is widely found on the coast and coral areas. The purpose of this study was to determine the inventory of types and density of starfish found in the waters of Kelombok Village, Lingga Regency, Riau Islands. This study was conducted in January-February 2024. The method used was the survey method, data colle…
Activities around the Sungai Paku Reservoir, such as fish farming using floating net cages (KJA), tourism, and oil palm plantations, are suspected of contributing organic matter and nutrients to the waters. This study aims to determine the water quality conditions through analysis of chlorophyll-a content and water quality in the Sungai Paku Reservoir, Kampar Kiri Subdistrict, Kampar Regency. T…
Freshwater crabs have a life cycle that is entirely in freshwater and play an important role in the food chain as omnivores and detritivores. Some freshwater crabs can only be found in clean water, so they can also be used as bioindicators of water quality. This study aims to determine the habitat and abundance of crabs in the Tanduk River in Rumbio Village and to investigate the relationship b…
Microalgae, particularly Chlorella sp., are widely recognized for their high productivity and nutritional content, making them potential resources in aquaculture and biotechnology. However, the high cost of synthetic nutrients remains a constraint in microalgal cultivation. This study aimed to determine the potential of mustard green vegetable waste (Brassica juncea L.) as a liquid organic fert…
The mangrove ecosystem in Kampung Mengkapan, Sungai Apit District, Siak Regency, Riau Province, covers an area of approximately20–30 hectares and plays a crucial role in coastal protection, providing habitat for nekton, sequestering CO₂, and supporting fisheries activities. However, human activities such as land conversion, waste disposal, and settlement development have caused ecosystem de…
This research aims to determine the types and abundance of phytoplankton found in the Genting River in Tanjung Medang Village. The research was conducted in September 2024 in the Genting River in Tanjung Medang Village. The research was conducted using a survey method to obtain primary data in the form of phytoplankton sample analysis results and water quality measurement results. Sampling w…
This study aimed to evaluate the structure of macrozoobenthos communities and the water quality of the Pengambang River, Rumbai Pesisir District, using the Family Biotic Index (FBI) as a bioindicator. The research was conducted at five observation stations determined purposively based on the variation of anthropogenic activities around the site. Macrozoobenthos samples were collected using Surb…
Gastropods are mangrove organisms that act as bioindicators in mangrove ecosystems. Mangroves are called productive areas because they are rich in organic matter which is a source of food for biota, being a shelter and spawning place for various types of biota such as mollusks and other biota. Pressure due to human activities will cause damage to the mangrove ecosystem. The destruction of the m…
This study aims to analyze the relationship between mangrove density and the abundance of mud snail (Cerithidea cingulata) in Concong Luar Village, Concong Subdistrict, Indragiri Hilir Regency. The research was conducted from March to May 2025 at three observation stations representing different mangrove conditions, ranging from natural areas to sites adjacent to settlements. A purposive sampli…
Aboveground Carbon Stock Estimationinthe Mangrove Ecosystem of the Historic River, Kayu Ara Permai Village, Sungai Apit District, Siak Regency, Global warming is one of the main drivers of climate change, with coastal ecosystems such as mangrove forests playing a key role in mitigating its impacts through carbon sequestration. This study aimed to analyze the biomass and carbon sequestration pot…
This study aims to determine The Types and Density of Starfish (Asteroidea) in The Seagrass Ecosystem of Pengudang Village, Bintan Regency, Kepulauan Riau Province. This research was conducted in September 2024 in Pengudang Village, Bintan Regency, Kepulauan Riau Province. Collecting and observations of starfish samples were conducted at three station points with three line transects each. In e…
This study aims to analyze the relationship between mangrove density and gastropod Solidity in the mangrove ecosystem of Desa Apar, Pariaman City. The research was conducted at three stations using the line transect plot method to measure mangrove density and the quadrat method to calculate gastropod Solidity. Data were analyzed using Principal Component Analysis (PCA) and simple linear regr…
This study aimed to assess the health condition of mangrove forests and analyze their utilization by local communities in Apar Village, North Pariaman District, West Sumatra. The research was conducted in June 2025 at three stations representing the mangrove ecosystem, using field surveys and interviews. The observed parameters included water quality (temperature, salinity, pH), sediment fracti…
Cosmos caudatus is known as herb that may improve the health of fish in general. However, the effects of this herb provision in the fish tissue structure has never been studied. To determine any changing of fish tissue that was provided with C. caudatus enriched pellets, a study was conducted in June - August 2024. There was a CRD applied with 4 treatments, namely P0 (control), P1 (10 gr/…