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Pollution, 6(3): 481-489, Summer 2020 DOI: 10.22059/poll.2019.276167.584 Print ISSN: 2383-451X Online ISSN: 2383-4501 Web Page: https://jpoll.ut.ac.ir, Email: [email protected] Diversity of Lichen Flora in Mt. Kitanglad Range Natural Park, Kaatuan, Lantapan, Bukidnon Cababan, M.L.1&3*, Memoracion, M.M.1 and Naive, M.A.2 1. College of Education, Central Mindanao University, University Town, Musuan, Maramag, 8714 Bukidnon, Philippines 2. Department of Biological Science and Mathematics, Mindanao State University-Iligan Institute of Technology, Andres Bonifacio Ave, Iligan City, 9200 Lanao del Norte, Philippines 3. Lourdes, Integrated School, Barangay Lourdes, Valencia City, 8709 Bukidnon, Philippines Received: 16.02.2019 Accepted: 16.02.2020 ABSTRACT: This study was conducted to identify and classify the lichens; determine the diversity index and richness of lichens. A total of 36 species belonging to six genera under three families was identified. Lichen species were mostly found at moderate high altitudinal range with an elevation of 1,131 meters above sea level and open areas where they received adequate sunlight with high moisture and humidity contents. Diversity, composition and altitudinal distribution of lichens was evaluated in Mt. Kitanglad Range, Kaatauan, Lantapan, Bukidnon, Philippines a wet forest type forest. The maximum species richness was reported on Usnea rubicunda Stirt. The abiotic factors were shown to be essential in adapting the relative abundance of lichens for it is capable to survive in the range of light levels, it appears that drier and lighter conditions competitively favored. Additionally, lichen diversity is dependent on the climatic and environmental conditions which makes them as an excellent biological indicators of ecosystem changes in the forests of Mindanao Island, Philippines. Keyword: morphology, ecological status, microhabitat preferences. INTRODUCTION ecosystem health (Gradstein et al., 2003; Lichens are often used to evaluate air quality, Aptroot and van Herk, 2007; Wolseley, climate change, as well as an effective early- 2002). Lichens therefore form an important warning system to detect accumulation of component of the complex web of life and heavy metals and radioactive materials in their disappearance affects the balance of terrestrial ecosystems (Aptroot and van Herk, nature to a great extent, but despite their 2007). Their use as environmental importance in nature their conservation has phytometers (Boonpragop and Polyiam, not been given much emphasis (Nash, 2008). 2007) is due to their specialized ecological Requisite moisture and light, unpolluted air and physiological requirements making them and undisturbed substratum often favor very sensitive to environmental changes and optimum growth and abundance of lichens are therefore excellent indicators of (Awasthi, 2000). The topography and varied altitude also contributes towards the rich * Corresponding Author, Email: [email protected] 481 Cababan, M.L., et al. lichen diversity and its endemism. The because of its universal distribution, they region is exceedingly rich in lichens, mosses play very significant roles in the and liverworts (Ramakantha et al. 2003). ecosystem. However, their highly diverse Specifically, some of them on growing assemblage in tropical forests lacks lichen rates and environmental conditions detailed taxonomic and ecological studies such as humidity, temperature, or (Rivas Plata et al., 2007). This is especially precipitation (Innes, 1985; Sancho and the case in the Philippines where many Hawksworth et al., 2005). Lichens are valued forest trees are richly studded with lichens as biological indicators to climatic conditions but not sufficient taxonomic studies have mainly due to its sensitivity to its been conducted. environment. Thus lichens are sensitive to Lichens are being used as biomonitors of changes in atmospheric and micro-climatic air pollution (Nimis, 2002). The use of conditions making them one of the valued lichens as early warning indicators of air biological indicators to determine the pollution suggests that a large number of environmental stress in tropical and lichen species in the study area may be temperate countries (De Silva & considered efficient bioclimatic indicator Senanayake, 2015; Wolseley & Aguire- which maybe effectively used to monitor Hudson, 1997). They exhibit three major climatic changes, in a long-term perspective. growth forms: crustose (cluster shaped and Gupta et al. concluded that macro-scale are slightly flattened in structure), foliose environmental variables such as altitude, (have leaf-like structures and are made out of relative humidity and temperature have flat tissue) and fruticose (resembles influence on diversity and distribution branching tube-like structures). Lichens are pattern of lichens in Badrinath valley of found growing as three primary types: Western Himalaya (Gupta, 2014). Lichens foliose, fruticose, and crustose. have been often described as treasure chest Lichens are numerous in numbers and is of natural goods due to its series of efficacy essential source of food for herbivore in for diverse drives since long back. Lichens certain ecosystem (Ellis, 2012). Lichens have used as food, natural remedies, in exhibit three major growth forms: crustose, perfume and dying industry, fermenting and foliose and fruticose. Crustose are cluster distillation and for beautifications. Different shaped and are slightly flattened in tree species vary in their bark characteristics, structure. Fruticose resembles branching hence, may vary in lichen epiphytes. Studies tube-like structures.Foliose lichens have have shown that bark structure affects leaf-like lobe and can merge with other epiphyte colonization and growth lichen species. Fruticose lichens have a (Boudreault et al., 2008). Our current “shrubby” growth form. Crustose lichens knowledge of lichens in Philippines is have crust-like bodies attached deeply to among the poorest in the world and studies in its substrates (Beeching & Hill, 2007). lichen diversity and its ecology are rare. For Biological monitoring using lichen as example, currently, there is no known study indicator may be considered a very of altitudinal distribution of lichens in effective tool for early warning system to Philippines at least to the best of my monitor and detect climate change and air knowledge. pollution (Loppi, 2000). Specifically, some Barangay Kaatuan is situated at of them on growing lichen rates and Lantapan Bukidnon which 36 km away environmental conditions such as humidity, from Sayre National Highway and it is temperature, or precipitation (Sancho and located 8°3’N, 124°59’E. It has a land area Pintado, 2004; Hawksworth et al., 2005). of 3,680 hectares. Kaatuan forested area is Lichens are highly diverse group and part of Kitanglad Mountain Range. This 482 Pollution, 6(3): 481-489, Summer 2020 forested area was considered to constitute others. Physico-parameters such as as a potential area for floristic assessment elevation, relative humidity, temperature, such as short range ecosystem and river topography, light and water content was banks which is known for somehow affects also recoded. the species richness of both flora and fauna Specimens collected from the study site due to continuous human exploitation. were placed in plastic bags together with The study of morphological structures of primary identification information such as lichen served as baseline information on the collection number, quadrat number, color, lichen species inhabiting Kaatuan, Lantapan, substrate and name of collectors. After Bukidnon in terms of distribution, diversity which, specimens were air dried. The sample status and environmental factors affecting the specimens were then placed in individual growth of lichen species. The gathered data paper packets and properly labelled. is useful to teachers, future researchers and The specimens were collected, classified amateur lichenologists as to taxonomy of the and described using the taxonomic keys of lichens. Lichens in the Hundred Islands like Randlane (2009) for family Parmaliaceae Philippines are subjected to excessive Usnea, Eversham (2015) for Cladoniaceae radiation and saline water splashes that can and Elix (1965) for Physciaceae. bring about desiccation and osmotic stress The given data of each species includes (Dobson, 2010; Nash, 2008). the description based on observed Further, the assessment of the morphology and diagnostic characters conservation status of lichens in Kaatuan, using dissecting microscope and field lens. Lantapan, Bukidnon became the basis for For Cladoniaceae it includes: substrate, the current status of the three lichen type of thallus, presence or absence of families. The main objective of this paper apothecia and cups, type of podetia, is to enumerate the lichens and their surface of podetia, and color of podetia and distribution within the forest types of Mt. apothecia; for the genus Usnea, it includes Kitanglad Range, Kaatuan, Lantapan, characteristics such as substrate, color of Bukidnon, Philippines. the thallus, color of medulla, color of base, occurrence of cortex, segmentation of MATERIALS AND METHODS thallus, shape of thallus in transverse The researchers sent a letter to the section, presence or absence of isidia, secondary school principal and Barangay soralia, and type of medulla; and for Chairman of Kaatuan, Lantapan, Bukidnon Physciacea, it includes: substrate, type of to seek approval for the conduct of the thallus, margin, color of

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