No abstract

This study aims to develop a turtle nests real-time monitoring system using the Arduino Uno to measure the temperature and moisture of sand used conveniently for certain applications. Sand temperature measurement uses a DS18B20 waterproof sensor, sand moisture uses SKU:SEN0193, and air temperature and humidity using DHT22. The micro SD card module is used to store data from sensor calculations in real-time and continuously. The measuring instrument was designed to be portable and easy to use. The material used is polypropylene that has dimensions of 11x6x18 cm3. Using the regression linear analysis, there was no significant difference in temperature measurements using the DS18B20 sensor and analog thermometer and sand humidity using an SKU:SEN0193 sensor and analog humidity measuring instrument.

This research is located at Sop Island, Sorong, West Papua. The data was collected using the Belt Transect method, stretching a line for 50 meters with a width of vision for 2.5 meters to the left and 2.5 meters to the right. The depth of the transect is 5 meters, recorded all genera from Family Fungiidae. Five genera were found on The Sop Island, namely Ctenactis, Fungia, Herpolitha, Polyphyllia, and Sandalolitha, but only Ctenactis, Fungia, and Sandalolitha were found on the three sites of observation. Fungia is the most abundant genera found at Sop Island. So, however, the study also found many unhealthy symptoms that infected Fungia. Of the three observation sites, six categories of unhealthy coral are found: Tissue Loss - non-predation - Coloured Band Disease, Tissue Discoloration - White, Tissue Discoloration non-white, Compromised Health Growth Anomalies, and Unknown. The most common categories infected with the Fungiidae at Sop Island are Tissue Loss - non-predation - Coloured Band Disease, Tissue Discoloration - White. Agonizingly, researchers found coral disease at every site.