Vol. 2, Issue 4 (2017)
Seasonal variation in lichen litter in different forest types of Kumaun Himalaya, India
Author(s): Mahesh Kumar Arya, Balwant Kumar, Vijay Arya, Sonam
Abstract: The study aims to assess lichen litter distribution and biomass in three altitudinal zones of Kumaun Himalaya. A total of 60 permanent quadrats having 2 m x 2 m size were randomly placed in the three different forest types i.e. Q. leucotrichophora mixed conifer forests, Quercus leucotrichophora broad leaved, and Q. floribunda broad leaved forest along the altitudinal gradient. Lichen litter samples from each sampled quadrat were collected on quarterly basis for assessment of their density, frequency and biomass. Maximum nine lichen species were found as litter fall at Q. floribunda forest (2200-2500 m asl) followed by eight from Q. leucotrichophora broad leaved forests (1700-2100 m asl). The overall density (Ind/ha) of fallen lichen in summer, rainy, winter, and spring season was found to be ranging from 27125-46625, 3500-23125, 8750-14125, and 6250-17500 respectively across the studied forests. Lichen litter biomass (g/ha) in summer, rainy, winter, and spring season ranged between 3450-4625, 238-1263, 963-1158, and 738-1025 respectively across the studied forests. Maximum lichen litter biomass was estimated in summer due to dryness of tree twigs and branches.