MAXIMUS: Journal of Biological and Life Sciences

Pemanfaatan Fly Ash dan Bottom Ash (FABA) sebagai Substrat Alternatif dalam Transplantasi Karang Acropora di Pulau Pahawang

2025-11-07T10:20:01+00:00

Degradasi terumbu karang akibat perubahan iklim dan aktivitas manusia memicu perlunya upaya rehabilitasi. Saat ini upaya rehabilitasi yang umum dilakukan adalah transplantasi karang dengan substrat buatan. Penelitian ini mengevaluasi efektivitas Fly Ash dan Bottom Ash (FABA) sebagai substrat alternatif dibandingkan beton konvensional dalam transplantasi karang Acropora di Pulau Pahawang. Substrat dibuat dengan rasio beton:FABA (80:20) dan diuji terhadap parameter pertumbuhan dan tingkat kelangsungan hidup fragmen karang selama enam bulan. Hasil menunjukkan bahwa substrat berbasis FABA mendukung pertumbuhan karang lebih baik dibandingkan substrat beton, dengan nilai Geometry Mean Dimension (GMD) yang lebih tinggi secara signifikan (p < 0.0001). Selain itu, tingkat kelangsungan hidup karang pada substrat FABA mencapai 100%, lebih tinggi dibandingkan beton (85%). Keunggulan substrat FABA diduga berasal dari kandungan kalsium dan silika yang mendukung pembentukan kerangka kapur karang, serta keberadaan biofilm yang berperan dalam stabilisasi ekosistem mikro. Temuan ini menunjukkan bahwa FABA dapat menjadi alternatif yang lebih efisien dan ekonomis untuk substrat transplantasi karang, sekaligus menawarkan solusi pemanfaatan limbah industri secara berkelanjutan. Namun, penelitian lebih lanjut diperlukan untuk mengkaji dampak jangka panjang FABA terhadap ekosistem laut.

Kata kunci: Kontak Horison, Kalsifikasi, Substrat Buatan, Biofilm.

Bacterial Contamination of Medical Scissors and Clamps in the Blood Collection Room

2025-11-10T01:52:45+00:00

Background: Bacterial contamination in blood products can originate from the donor's body or the surrounding environment. Contamination may occur during the blood collection process. Transmission typically happens through the hands and body of the medical personnel, contaminated clothing, medical instruments, and the surrounding environment. Bacterial contamination is a highly influential parameter in indoor air populations, especially in healthcare environments. Objective: The objective of this study was to identify the presence and growth of bacteria on medical scissors and clamps in the blood collection room of the Indonesian Red Cross Sleman Regency. Method: This research employed a descriptive observational method to analyze bacterial growth on scissors and clamps collected from the blood collection room of Indonesian Red Cross Sleman Regency. A cross-sectional approach was used, in which data on potential risk factors were collected at a single point in time. Nutrient Agar (NA) was used as the culture medium in this study. Result: The results of the bacterial isolation indicated that the scissors and clamps in the blood collection room of the Indonesian Red Cross Sleman Regency can be considered sterile, as the number of bacterial colonies did not exceed the normal threshold of <30 colonies. Specifically, 2 bacterial colonies were found on the scissors and 2 on the clamps. Conclusion: The presence of only 2 colonies each on the scissors and clamps suggests that the instruments in the blood collection room of Indonesian Red Cross Sleman Regency are within acceptable sterilization standards.

Exploration of Herpetofauna Diversity in Banten Forest Park as a Basis for Biodiversity Information

2025-11-07T10:20:02+00:00

The Banten Forest Park is the only conservation area in Banten managed by the local government and possesses significant potential for high herpetofaunal diversity. This study aimed to document the diversity and composition of herpetofaunal species within the park. Data were collected using the Visual Encounter Survey (VES) method combined with exploratory techniques, conducted from June 22 to 23, 2024. A total of 43 individuals representing nine species, seven genera, six families, and three orders (Squamata, Serpentes, and Anura) were recorded. The Squamata order was the most dominant, comprising the families Agamidae, Gekkonidae, Scincidae, and Varanidae, with Sphenomorphus sanctus and Eutropis multifasciata identified as the most abundant species. All recorded species are categorized as Least Concern by the IUCN and are not listed as protected under Indonesian wildlife regulations. The Shannon–Wiener diversity index (H’ = 1.75) indicates a moderate level of species diversity. The findings collectively demonstrate that the habitat within Banten Forest Park maintains adequate ecological integrity to support a diverse community of reptiles and amphibians, underscoring the importance of conserving habitat heterogeneity in tropical lowland ecosystems.