Taxonomical study of vascular plants on the Northeastern slope of Mt. Banahao, Luzon, Philippines

Date

10-1993

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Willian SM Gruezo

Abstract

A transect line was established starting from the. Philippine Long Distance Telephone Company (PLDT)'s' transmitter-receiver tower at Lucban, Quezon to the peak of Mt. Banahao de Lucban (530 .North from the peak). Five sample plots were laid out along this transect and were as follows: plot 1 (summit, 1875 masl), plot 2 (1500mash), plot masl). analysis (1200 masl), plot 4 (900 masl), and plot 5 (600 On each plot, a plotless technique of vegetation Was conducted, using the Point Centered Quarter Method (PCOM), where 20 points or 80 sampled individuals were assigned for each plot. All vascular plant species encountered in the plots as well as in the PCOM were listed. A total of 231 species of ferns, conifers and flowering plants is recorded. These are distributed to 153 genera and 86 families. Analysis of data reveals that the number of families, genera, species, tree species sampled in PCOM, trees per hectare and epiphytic growth generally decreases with increasing altitude. Conversely, undergrowths and ground cover increase with altitude. Average basal area of trees decreases will altitude but if multiplied with number of trees per hat re to get the average basal area of trees in a hectare as productivity measurement, productivity decreases with increasing altitude. The important groups according to the PCOM of each plot are as follows: plots 1 and 2, Podocarpaceae and Fagaceae: plot 3. Myrtaceae and Lauraceae; plot 4, Myristicaceae and Meliaceae; and plot 5. Euphorbiaceae and Moraceae. One hundred (100) out of 231 or 43.37. of all encountered species are found in only one plot- Eighty--five (85) species or 36.87. are found in two plots, 29 (12.6%) are found in three plots and 17 species or 7.4% are found in fur plots. Apparently, no single species is present in all the five plots. Comparison of the mountain's zonation to the observations made by Whitmore (1975) to the tropical mountains of Malaya indicates massive disturbance from the mid-mountain downwards. Similarity Index computations show that plots 2 and are the most similar pair of plots. Plot 5, when compared with other plots showed very low percent similarity which means that plot 5 contains very distinct floristic composition compared with the other plots. located in the higher elevations.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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