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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 Kadir Abdul Wahab Adi Gunawan Adi Gunawan, Adi Adi Wijaya Adiansyah, Joni Adryan Fitrayudha Agum Muladi Agum Muladi Agung Pramunarti Agus Herianto Agus Kurniawan Ahmad Kutbi Rais Ahmad Taufiq Hidayat Ahmad Zarkasi Ahmad Zarkasi Akbar, Ilham M Alfian Pujian Hadi Andi Waliana Syaggaf Anwar Anwar Ari Nuryaddin Ari Nuryaddin Putra Ari Nuryaddin Putra Arif Arif Arif Arif Arif Arif Arif Wijaya Ariyanto Ariyanto Artansyah, M. Tunso Sapta Aryan Perdana Putra Aryan Perdana Putra Astagini Putri Kariana Bambang Semedi Beddu Tang Burhanuddin Burhanuddin Daharanindra Pradina Arich Ashari Deviana Mayasari Dhita Eka Hesti Dhita Eka Pramita Hesti Dyasti Zulhiani Edi Edi Eka Fitriani Erni Yustissiani Erwin Erwin Ety Kuniawati Fariyadin, M. Ruslin Anwar, Indradi Wijatmiko, Adiman Fathul Rakhman Fathuryani Fathuryani Fatimaturrahmi Fatimaturrahmi Fatma Wulandari Fatman Nurjan Fatman Nurjan Fatuh Rahman Fatuh Rahman Fifiarna Fifiarna Gunadi, Putu Eka Hady Rasikhun Hafiz Hamdani Hafiz Hamdani Hafiz, Abdul Harlinda Asdiani Harry Irawan Johari Harry Irawan Johari Harry Irawan Johari Harry Irawan Johari Haryawan Haryawan Hirsan, Fariz Primadi Ibrahim Ibrahim Ibrahim Ibrahim Ibrahim Ibrahim Ibrahim Ibrahim Ibrahim Ibrahim Ibrahim Idhar Idhar Ihjan Parlendo Irma Setiawan, Irma Isfanari Johari, Harry Johari, Harry Irawan Joni Safaat Adiansyah Joni Safaat Adiansyah Joni Syafaat Junaidi Am Junaidin Junaidin Junaidin, Junaidin Kamaluddin Kamaluddin Khaerul Anam Khosi'ah Khosi'ah Khosiah Khosiah Khosiah Khosiah Khosiah Khosiah Khosiah Khosiah Kutbi Rais, Ahmad Lalu Lunk Ryanata Putra Lalu Mokh Reza Anshari Lalu Mokh Reza Anshari Lalu Septiya Fahmi Rezi Lulu Luciana Putri 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 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 Muliatiningsih Muliatiningsih Mursal Ghazali Najamudin Najamudin Nuddin Harahab Nurhayati Nurhayati Nurhayati Nurhayati Nurhayati, Nurhayati Nurhidayah Nurin Rochayati Nurin Rochayati Nurudin Nurudin Nurudin Nurudin Nurul Hidayati Nurul Huda Nurul isnaeni Rahmat Palahuddin Palahuddin Palahuddin Palahuddin, Palahuddin Pascanawati, Maya Saridewi Puteri Samengasbumi, Ringgi putri, amanda Putu Eka Gunadi Putu Eka Gunadi Rahman, Fatuh Rahmat, Nurul isnaeni Rais, Ahmad Kutbi Ramadhan Hidayat, Ari Ratnah Ratnah Ravinesh Rohit Prasad Ravinesh Rohit Prasad, Ravinesh Rohit Sabri Sabri Samengasbumi, Ringgi Puteri Samsualam Samasualam Serdian Eska Cahya Sinta Muhardini Sintayana Muhardini Sirajudin Sirajudin Siswahyudianto Siti Hasanah Siti Sanisah Siti Sanisah Sri Rejeki Sri Rejeki Surya Hadi Swahip Swahip, Swahip Syirril Ihromi, Syirril Tarmizi, Muhamad Alfin Taufiqurrahman Taufiqurrahman Toyyib, Mukhtar Ubaidillah, Aji Syailendra Wiwit Bayu Adi Wiwit Bayu Adi Yuliani Yuliani Yuliani Yuliani Yulianto Suteja Yulianto Suteja Yuniarman, Ardi Yusron Saudi Yusron Saudi Zaenudin Zaenudin