Tìm kiếm Ebook:

⇩⇩⇩ HƯỚNG DẪN TẢI EBOOK TRÊN BLOG ⇩⇩⇩

[BUỒN LÀM CHI EM ƠI] TÀI KHOẢN MEDIAFIRE CỦA BLOG ĐÃ BỊ KHÓA

Đầu tiên mình xin cám ơn các bạn đã gắn bó với Blog suốt thời gian qua, nhờ có mọi người mà Blog của mình mỗi ngày một đông vui hơn, cá...

[EBOOK] The taxonomic study of foliicolous lichenized fungi in Chu Yang Sin national park of Vietnam, Nguyen Thi Thuy, Sunchon National University

Foliicolous lichens are lichens that grow on the living leaves of angiosperms, fern fonds, phyllodes, phylloclades and young bamboo culms. Generally they occur on the leaves that shed off in 25 years or stayed longer (e.g. Agave and palm leaves), except few taxa which were found to grow on annually deciduous leaves. Majority of the foliicolous lichens were found on the upper side of the leaves i.e. epiphyllous, but few also grow on the lower side i.e. hypophyllous. Foliicolous lichens generally prefer growing over leaves of lower branches which not only enjoyed the partial shade of the over growing branches but also had a more humid environment than others. Based on their substrate specificity, they can be divided into three groups:

1)    Eufoliicolous lichens: they grow and reproduce entirely on the leaves and have a crustose thallus that is tightly adnate to the substrate.

2)    Facultative foliicolous lichens: they usually grow on barks, petioles and twigs but exceptionally on leaves.

3)    Pseudofoliicolous (indifferent or ubiquitous) lichens: besides growing on leaves they can grow on different substrates, such as rock, bark, soil etc.

The diversity and density of foliicolous lichens is abundant in the tropical rainforests of Central and South America, Africa and Southeast Asia, due to availability of optimum temperature, humidy, sunlight and shade throughout the year. Besides tropical rainforests, they are also reported from subtropical and temperate rainforests having humid areas, but the diversity and density in the subtropical and temperate regions is less in comparison to tropical regions because of lack of suitable macro- and micro- climatic conditions responsible for the luxuriance growth of these lichens.

These lichens are one of the most abundant epiphytes in tropical rain forests, henceforth the highest diversity of foliicolous lichens is found in tropical regions, especially the primary tropical rainforests which are not affected by anthropogenic disturbance. More than 800 foliicolous lichen taxa are known from the world. However, most of the publications mentioning about foliicolous lichens have came from Neotropics, Valdivian and African Paleotropic regions, but very few studies were carried out in the Eastern Paleotropics.

Socialist Republic of Vietnam - a country situated in South East Asia - with high temperature, high average annual rainfall and large area of primary tropical rain forests is suitable for the colonization of tropical lichens, especially foliicolous lichens. The lichen flora of Vietnam is not well worked out and most of the work on Vietnamese lichens was done by foreigners during their trip to Vietnam. Krempelhuber (1873) was the first person to report lichens from Vietnam, followed by Muller (1891), Harmand (1928), Abbayes (1964) and Tixier (1966). However, Vezda (1977) was the first person to cite foliicolous lichens from Vietnam, while making a review on previous publications dealing with lichens of Vietnam. Aptroot & Sparrius (2006) made a first checklist of lichen flora of Vietnam and included 32 foliicolous lichen species within it. Later on, Papong et al. (2007) increased the tally of foliicolous lichens to 70.
Nguyen et al. (2009, 2010) during her studies on foliicolous lichen flora of Vietnam, reported 14 additional species which were new to Vietnam lichen flora and raises the tally of foliicolous lichens to 84. Nguyen et al. (2010) for the first time also reported fertile specimen of Coenogonium disciforme Papong, Boonpr. & Lucking from Chu Yang Sin national park of Vietnam. Previously only fertile specimen of this species was known from Thailand (Papong et al. 2007). Since, there were no expert focusing on this group of lichen in Vietnam, and also number of publications and numbers of species recorded from this place were very few, this idea led the author to work on foliicolous lichen flora of Vietnam.

As far as Vietnam is concerned, it is a very big country located in the Asian wet tropics with long beach and two large deltas having high annual rainfall making conditions favorable for the growth foliicolous lichens, henceforth it is bit difficult for the author to explore entire country within 2 years of time for her Master’s thesis, that’s why she has focused her study on foliicolous lichen diversity of Chu Yang Sin national park from where she reported 28 species belonging to 13 genera of which 6 were new to Vietnamese lichen flora. Key to the genera and species are provided along with brief description of all the species reported from this national park.

[EBOOK] The taxonomic study of foliicolous lichenized fungi in Chu Yang Sin national park of Vietnam, Nguyen Thi Thuy, Sunchon National University


Keyword: ebook, giáo trình, The taxonomic study of foliicolous lichenized fungi in Chu Yang Sin national park of Vietnam, iicolous lichenized fungi, phân loại nấm iicolous lichenized, nấm ăn vi nấm

Không có nhận xét nào:

Đăng nhận xét

levantaihg@gmail.com

Tổng số lượt truy cập vào Blog