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Journal : Reflection Journal

Estimated Population Abundance of a Bat (Chiroptera) Colony at the Batukoq Water Channel Cave, Senaru, North Lombok Rahman, Fatuh; Adiansyah, Joni Safaat; Sukuryadi, Sukuryadi; Akbar, Ilham M
Reflection Journal Vol. 5 No. 2 (2025): Desember
Publisher : Lembaga Penelitian dan Pemberdayaan Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/c4zmnb72

Abstract

Cave-roosting bats are highly exposed to disturbance because roost entrances are predictable and accessible, yet local management often lacks baseline population information. This study examines a cave-associated roost system in Batukoq, Senaru (North Lombok) and aims to provide a site-specific colony abundance estimate, describe emergence dynamics during the counting window, and identify the main sources of counting bias under field conditions relevant to low-resource monitoring. A Flight Line Census based on direct visual observation was implemented without thermal sensors or night-vision devices, conducted during critical movement periods (dusk and dawn) and restricted to a single large colony site to minimize cross-site variability. The colony’s mean estimated abundance was approximately ±590 individuals per night, indicating that Batukoq functions as a key day roost. Visual observations suggested two major groups (Megachiroptera and Microchiroptera) using different flight corridors, and emergence was brief (about 30–45 minutes) with an early peak period that is most sensitive to counting error. The dominant limitation was flight-path overlap under high density and low light, which tends to produce underestimation; therefore, abundance values should be treated as conservative and supported by repeated counts across multiple nights and time windows. These results support the continued use of visual flight-line counts as a non-invasive baseline method, provided that procedural standardization is emphasized and roost disturbance is reduced as a practical conservation priority.
Co-Authors -, Ibrahim - -, Mintasrihardi - Abdul Azizul Ghaffar Abdul Hafiz Abdul Wahab Adi Gunawan Adi Gunawan, Adi Adi Wijaya Adiansyah, Joni Adryan Fitrayudha Agum Muladi Agung Pramunarti Agus Herianto Agus Kurniawan Ahmad Kutbi Rais Ahmad Taufiq Hidayat Ahmad Zarkasi Ahmad Zarkasi Akbar, Ilham M Alfian Pujian Hadi Anshari, Lalu Mokh Reza Arif Arif Arif Arif Arif Arif Arif Wijaya Ariyanto Ariyanto Ariyanto Ariyanto Aryan Perdana Putra Asdiani, Harlinda Ashari, Daharanindra Pradina Arich Bambang Semedi Burhanuddin Burhanuddin Deviana Mayasari Eka Fitriani Erwin Erwin Fariyadin, M. Ruslin Anwar, Indradi Wijatmiko, Adiman Fathul Rakhman Fatimaturrahmi Fatimaturrahmi Fatma Wulandari Fatman Nurjan Fatman Nurjan Fatuh Rahman Fifiarna Fifiarna Gunadi, Putu Eka Hafiz Hamdani Hafiz Hamdani Hafiz, Abdul Harlinda Asdiani Harry Irawan Johari Harry Irawan Johari Haryawan Haryawan Hesti, Dhita Eka Hirsan, Fariz Primadi Ibrahim Ibrahim Ali Ibrahim Ibrahim Ibrahim Ibrahim Ibrahim Ibrahim Ibrahim Ibrahim Idhar, Idhar Irma Setiawan, Irma Jannah, Putri Miftahul Johari, Harry Johari, Harry Irawan Joni Safaat Adiansyah Junaidi Am Junaidin Junaidin Junaidin, Junaidin Kamaluddin Kamaluddin Khaerul Anam Khosi'ah Khosi'ah Khosiah Khosiah Khosiah Khosiah Khosiah Khosiah, Khosiah Kuniawati, Ety Kutbi Rais, Ahmad Lalu Lunk Ryanata Putra Lalu Mokh Reza Anshari M. Saleh M. Sobry Mahsup Mahsup Mahsup, Mahsup Mardiyah Hayati Mas'ad Mas'ad Mas'ad Mas'ad Mas'ad, Mas'ad Mas,ad, Mas,ad Mas’ad, Mas’ad Mas’ad Mas’ad Mas’ad Mas’ad Mas’ad Mas’ad Matrani, Bedy Matrani, Bedy Fara Aga Mimit - Primyastanto Mimit Primyastanto Mintasrihardi, Mintasrihardi mohammad faisal Muhamad Alfin Tarmizi Muhamad Alfin Tarmizi Muhammad Basir Muhammad Khalis Ilmi Muhammad Nizaar Muhammad Sabri Muladi, Agum Muliatiningsih Muliatiningsih Najamudin Najamudin Nuddin Harahab Nurhayati Nurhayati Nurhayati, Nurhayati Nurin Rochayati Nurjan, Fatman Nurudin Nurudin Nurul Hidayati Nurul Huda Nurul isnaeni Rahmat Nuryaddin, Ari Palahuddin Palahuddin, Palahuddin Parlendo, Ihjan Pramita Hesti, Dhita Eka Puteri Samengasbumi, Ringgi Putra, Aryan Perdana Putri, Lulu Luciana Putu Eka Gunadi Rahman, Fatuh Rahmat, Nurul isnaeni Rais, Ahmad Kutbi Ramadhan Hidayat, Ari Ravinesh Rohit Prasad Ravinesh Rohit Prasad, Ravinesh Rohit Rezi, Lalu Septiya Fahmi Sabri Sabri Serdian Eska Cahya Sinta Muhardini Sintayana Muhardini Siti Hasanah Siti Sanisah Sri Rejeki Surya Hadi Swahip, Swahip Tarmizi, Muhamad Alfin Taufiqurrahman Taufiqurrahman Toyyib, Mukhtar Ubaidillah, Aji Syailendra Wiwit Bayu Adi Wiwit Bayu Adi Yulianto Suteja Yuniarman, Ardi Yusron Saudi Yusron Saudi Zaenudin Zaenudin Zulhiani, Dyasti