KENANGA : Journal of Biological Sciences and Applied Biology

KEANEKARAGAMAN BURUNG DI KAWASAN MANGROVE KOTA BANDA ACEH

Rizky Ahadi — 2024-10-30

Birds, as natural inhabitants of mangrove areas, play an important role in maintaining the stability of the ecosystem and its components. This research aims to determine the species diversity index of birds in the mangrove ecosystem of Banda Aceh City. The method used is an exploratory survey, conducting direct observations at each research location using purposive sampling. Field data collection was carried out in May 2022. Birds diversity data were analyzed using the Shannon-Wiener Index. The results identified 17 bird species from 11 families, with the birds species diversity index in the mangrove ecosystem of Banda Aceh City falling into the moderate category (H’ = 1.99). These findings indicate that the mangrove ecosystem in Banda Aceh has significant potential in supporting biodiversity, which is crucial for further management and conservation efforts.

STATUS KONSERVASI BURUNG DI KAWASAN AIR TERJUN TINGKAT TUJUH KABUPATEN ACEH SELATAN

Muna Ulfiyah — 2024-10-30

Conservation status of birds can be interpreted as the breeding status of birds or the status of species in protected natural areas. Birds play a crucial role in dispersing various types of plants, such as fruits and seeds. This study aims to identify data on bird species categorized under conservation status in the Seven-Tier Waterfall area of South Aceh Regency, to serve as a basis for conservation actions and bird protection efforts. The methods used in this research include Exploratory Surveys and Point Count. Conservation status refers to the International Union for Conservation of Nature (IUCN) Red List of Threatened Species, and the Ministry of Environment and Forestry Regulation (PERMENLHK) P.106/MENLHK/SETJEN/KUM.1/12/2018. The Convention on International Trade in Endangered Species (CITES) is used to determine national trade status. The results of the study on the conservation status of birds in the Seven-Tier Waterfall area of South Aceh Regency are classified into 3 IUCN categories: LC (Least Concern) with 21 bird species, NT (Near Threatened) with 2 bird species, and VU (Vulnerable) with 2 bird species. Additionally, according to CITES, there are 3 bird species listed in Appendix II. According to the Ministry of Environment and Forestry Regulation (PERMENLHK) P.106/MENLHK/SETJEN/KUM.1/12/2018, there are 4 protected bird species in the Seven-Tier Waterfall area of South Aceh Regency.

RANCANG BANGUN SISTEM BIOFLOK UNTUK PENINGKATAN BUDIDAYA IKAN LELE: PERSPEKTIF ZOOLOGI DAN EKOLOGI

Wiwit Artika — 2024-10-30

Catfish (Clarias sp.) aquaculture is a promising sector with high economic potential in Indonesia. However, challenges related to production efficiency and environmental sustainability often hinder its growth. This study investigates the design and implementation of a biofloc system aimed at enhancing catfish (Clarias sp.) aquaculture in Gampong Mata Ie, Montasik, Aceh Besar, Indonesia. The biofloc technology presents a promising solution to the challenges of production efficiency and environmental sustainability in catfish farming by optimizing water quality and maximizing feed utilization through efficient nitrogen cycling. Employing both qualitative and quantitative methodologies, the research involved a comprehensive site survey to assess initial conditions and specific requirements of local catfish farming. The biofloc system design encompassed material selection, pond configuration, and technical parameters such as aeration, water circulation, and organic carbon supplementation. Implementation results demonstrated significant improvements in water quality, with ammonia and nitrite levels maintained within safe limits. Additionally, catfish growth was optimized, evidenced by lower feed conversion ratios, indicating enhanced feed efficiency. From a zoological perspective, the biofloc system provides an environment that closely mimics natural conditions, supporting the welfare of catfish. Ecologically, this technology mitigates negative environmental impacts by minimizing waste and water usage. The application of biofloc technology in Gampong Mata Ie underscores its potential to not only enhance production outcomes but also contribute to local economic and environmental sustainability. This research concludes that the biofloc system design and implementation represent an effective and sustainable strategy for catfish farming, offering significant benefits from both zoological and ecological perspectives. It is anticipated that these findings will serve as a reference for catfish farming developers in similar regions and promote the broader adoption of biofloc technology in the Indonesian aquaculture industry.