Exploring Avian Diversity in Siocon's Mangrove Areas, Mindanao | InformativeBD

Clarito F. Concepcion,  Hulker F. Tomboc, and Christine Mae D. Roullo, from the different institute of the Philippines. wrote a research article about, Exploring Avian Diversity in Siocon's Mangrove Areas, Mindanao. entitled, Avian species in selected mangrove areas in Siocon, Zamboanga del Norte, Mindanao, Philippines. This research paper published by the Journal of Biodiversity and Environmental Sciences | JBES. an open access scholarly research journal on Biodiversity, under the affiliation of the International Network For Natural Sciences | INNSpub. an open access multidisciplinary research journal publisher.

 Abstract

With the rampant habitat destruction of wildlife in the Philippines, the avifauna is the most affected as endemism in the archipelago is so high. Siocon, Zamboanga del Norte potentially harbors several Mindanao threatened endemic species in its Siocon Resource Reserve, a patch of secondary mature lowland forest as well as in mangrove areas. Opportunistic sampling was employed using the point method to primarily document the avifauna, specifically in the mangrove areas of Barangay Manaol and Barangay A.L Micubo. A total of thirty-four (34) birds (avifauna) were identified and classified, where twenty-five of them were common to the two sites. These are Rhipidura nigritorquis, Cinnyris jugularis, Lalage nigra, Megalurus palustris, Passer montanus, Gerygone sulphurea, Artamus leucorynchus, Pycnonotus goiaver, Oriolus chinensis, Hirundo tahitica, Orthotomus castaneiceps, Aplonis panayensis, Lonchura atracapilla, Coryusv macrohynchos, Butorides striata, Egretta garzetta, Ardeola speciosa, Ardea alba, Ixobrychus sinensis, Pluvialis fulva, Himantopus himantopus, Sterna hirundo, Actilis hypoleucos, Anas luzonica, Dendrocygna arcuata, Geopelia striata, Spolopelia chinensis, Todiramphus chloris, Merops philippinus, Pandion haliaetus, Haliastur indus, Gallinula chloropus, Tachybaptus ruficolis, and Centropus viridis. Out of these, three species were endemic to the Philippines (O. castanneiceps, C. viridis, A. luzonica), the latter is also considered a threatened species. This baseline data on avifauna on mangrove forests is necessary for the framework of conservation policy in the area.

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Introduction

The Philippines is one of the countries in the world considered as a biodiversity hotspot (Jumawan et al., 2012) and it is home to many avifauna species, which includes endemic and non-endemic species (Birdlife International, 2020). Specifically, as an archipelagic country, it harbors to more than 600 species of avifauna, where almost 200 of them are endemic (Tanalgo et al., 2015). According to Haribon (2014), 80 species of Philippine birds are now threatened to extinction, 13 are critically endangered, and 54 species are vulnerable. In the Zamboanga Peninsula, there are an estimated 142 species of avifauna in three key conservation sites, namely: the Lituban-Quipit watershed, Lake Maragang-Mt. Timolan and Pasonanca National Park. Around 78 species were found in Zamboanga City, of which 30 are nearly threatened (Panguntalan et al., 2011).

Mangrove ecosystems are one of the most biologically rich, diverse, and productive ecosystems in the world (Mahilac & Madjos, 2020), which provides a home to birds. They serve as some form of nursery for many species of invertebrates as well as birds, making them one of the ecologically essential ecosystems. Despite this crucial role, approximately one-third of the mangrove ecosystems worldwide have been lost over the past 50 years (Alongi, 2002). In the Philippines, a decline of mangroves was reported from half a million hectares in 1918 to only 120,000 hectares in 1994 (Primavera, 2000). This estimate is accordingly accounted for overharvesting for the conversion of mangroves to fishponds during the 1960s and 1970s, fuel or charcoal, agriculture, industry, and human settlements (Dieta & Dieta, 2015). 

With this rampant habitat destruction and high endemism of birds, the country now possesses a disproportionately large number of threatened species for its size (Jacosalem et al., 2013). Further, the Philippines ranks second in terms of the number of threatened endemic birds in the world (Mallari et al., 2001). Among the islands where several endemic birds are threatened is Mindanao (Paguntalan et al., 2011). Despite the presence of a restricted-range and endemic species in the Zamboanga Peninsula (formerly called Western Mindanao), very few studies have been conducted in the area where most of the available information on avifauna is derived from museum records (Dickinson et al., 1991, Lambert 1996, Collar et al., 1999, Kennedy et al., 2000, Brooks 2002) and trip reports of visiting birdwatchers.

Siocon in Zamboanga del Norte, Mindanao potentially harbors several threatened endemic species in its Siocon Resource Reserve, a patch of secondary mature lowland forest as well as in mangrove areas (Paguntalan et al., 2011). Accordingly, there is a need to conduct more field research and surveys in the remaining forest patches of the Zamboanga Peninsula. As surveyed in the municipal office, the avifauna inventory is not yet in place. This study presents a list of bird species and information on the conservation status of the remaining forests and threatened birds in these areas.

Reference

Avian species in selected mangrove areas in Siocon, Zamboanga del Norte, Mindanao, Philippines

Alongi DM. 2002. Present state and future of the world’s mangrove forests. Environmental Conservation 29(3), 331-349.

Birdlife International. 2012. Birdlife International country profile: Philippines. Retrieved from http://www.birdlife.org/datazone/country/philippines

Brooks T. 2002. Birds collected in the Philippines by the Noona Dan Expedition, August to December 1961. Steenstrupia 27, 29-46.

Collar NJ, Mallari NAD, Tabaranza BR. 1999. Threatened birds of the Philippines. Manila: Bookmark.

Dickinson EC, Kennedy RS, Parkes KC. 1991. An annotated checklist of the birds of the Philippines. London: British Ornithologists’ Union.

Dieta RE, Dieta FC. 2015. The Philippine National Aquasilviculture Program. In M. R. R. Romana-Eguia, F. D. Parado-Estepa, N. D. Salayo, & M. J. H. Lebata-Ramos (Eds.), Resource Enhancement and Sustainable Aquaculture Practices in Southeast Asia: Challenges in Responsible Production of Aquatic Species: Proceedings of the International Workshop on Resource Enhancement and Sustainable Aquaculture Practices in Southeast Asia 2014 (RESA).

Diza Joy Quitain, Milton Norman Dejadena Medina, Richel Enclonar Relox, Emmanuel Pacheco Leaño. 2016. Birds of mainit hot spring protected landscape, Nabunturan, compostela valley, Province Mindanao island, Philippines; JBES, V9, N2, August, P149-155 https:// innspub.net/ birds- of- mainit -hot-spring-protected-landscape-nabunturan-compostela-valley-province-mindanao-island-philippines/

Haribon. 2014. The state of the Philippine birds: 2014. Retrieved from  https://haribon.org.ph/the-state-of-thephilippine-birds

Iglesias-Rios R, Mazzoni R. 2014. Measuring diversity: looking for processes that generate diversity. Natureza & Conservação 12(2), 156-161.

International Union for Conservation of Nature (IUCN). 2020. The IUCN red list of threatened species. Retrieved from  https://www.i ucnredlist.org

Jakosalem PGC, Collar NJ, Gill JA. 2013. Habitat selection and conservation status of the endemic Ninox hawk-owl on Cebu, Philippines. Bird Conservation International 23(3), 360-370.

Jumawan K, Medina MN, Villanueva RJ. 2012. Annotated list of Odonata from Mainit Hot Spring Protected Landscape, Compostela Valley, Mindanao Island, Philippines. Philippine Journal of Systematic Biology 6, 14-27.

Kanieski MR, Longhi SJ, Soares PRC. 2017. Methods for Biodiversity Assessment: Case Study in an Area of Atlantic Forest in Southern Brazil. Selected Studies in Biodiversity. Intechopencom Books. Retrieved from https://www.intechopen.com /books/selected-studies-in- biodiversity/methods-for-biodiversity-assessment-case-study-in-an-area-of-atlantic- forest-in-southern-brazil

Kennedy RS, Gonzales PC, Dickinson EC, Miranda HC, Fisher TH. 2000. A guide to the birds of the Philippines. Oxford University Press.

Lambert F. 1996. Pittas, broadbills and asities. Robertsbridge, East Sussex. Pica Press. Mahilac, H. M. O. & Madjos, G. G. (2020). Macrofaunal species assessment in protected, denuded and rehabilitated mangrove ecosystems of Misamis Occidental Province, Philippines. Arxius de Miscellània Zoològica. Article in Press.

Mallari NAD, Tabaranza BR, Crosby MJ. 2001. Key conservation sites in the Philippines. Manila: Bookmark.

Paguntalan LMJ, Jakosalem PG, Lagerqvist M, Nordin J, Fernandez G, De La Cruz M, Agaton Baysa. 2011. Bird observations on the Zamboanga Peninsula, Mindanao, Philippines. Forktail 27, 15-22.

Primavera JH. 2000. Development and conservation of Philippine mangroves: Institutional issues. Ecological Economics 35, 91-106.

Tanalgo KC, Pineda JAF, Agravante ME, Amerol ZM. 2015. Bird Diversity and Structure in Different Land-use Types in Lowland South Central Mindanao, Philippines. Tropical Life Sciences Research 26(2), 85-103.

Source : Avian species inselected mangrove areas in Siocon, Zamboanga del Norte, Mindanao, Philippines