A blog by Dr. N. Anandakumar, Assistant Professor, Jairam College of Education, Karur-Dt.
Monday, 25 March 2019
Sunday, 17 March 2019
Grey Slender Loris Unique Species of Ayyalur Reserve Forest, Dindigul-Dt. Now Under the IUCN Red List. (17.03.19)
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| Loris lydekkerianus |
Friday, 15 March 2019
Monday, 4 March 2019
Wednesday, 27 February 2019
Thursday, 14 February 2019
Monday, 26 November 2018
Tuesday, 6 November 2018
Monday, 22 October 2018
Monday, 8 October 2018
Saturday, 21 July 2018
Tuesday, 8 May 2018
A special talk on "Life Lives On The Edge - The Biodiversity" at St. Mary's Higher Secondary School, Dindigul-Dt. (04.05.2018).
‘Values of
biodiversity’ are classified as
three main types. 1. Resources 2. Potential resources 3. Contributory factors. For
example, the biological materials are consumed in markets which are valued for
their recreational or aesthetic purposes. It is called as Resources category. Whereas,
an opportunities for the discovery of new product is called as Potential
resources. In last part, the functional role in ecosystem like ‘Niche’ is
called as Contributory factors.
References:
Wood, P.M. (1997).
Biodiversity as the source of biological resources: a new look at biodiversity
values. Environmental Values, 6, 251-268.
Thursday, 12 April 2018
A special speech on "Biodiversity in Education for Sustainable Development" at Lakshmi College of Education, Gandhigram, Dindigul-Dt. (26.03.2018).
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| Photo of lecture session. |
"Biocenosis"
means
different species like plants, animals, microbes and human beings interact to
form a beautiful community or eco-system. This interaction between living organisms
in the eco-system called as biotic factors. Species also dependent upon abiotic
factors. The main function is flow of energy from one trophic level to another
level transferred. From this concept, ecosystem sustain the structure like
functional unit.
Monday, 9 April 2018
A special lecture on "Biodiversity-An Exploration of Life" at RVS College of Education, Dindigul-Dt. (13.03.2018).
I have stressed the importance of Marine Biodiversity, particularly "Microbial community of intertidal zone" in Rameshewaram area, Ramanathapuram Dt. It is a very harsh living environment. They are constantly facing challenges such as salinity, wind, sunlight, predators and strong water currents. It helps with these difficulties many organisms have “special adaptation” features.
A special lecture on "Biodiversity-An Exploration of the Diversity" at M. Kumarasamy College of Education, Karur-Dt. (10.03.2018).
An endangered species is a native species that faces a significant risk of extinction. Such species may be declining in number due to threats such as habitat destruction, climate change and pressure from invasive species. The flora of India is one of the richest in the world due to the country's wide range of climate, topology, and environment. There are over 15,000 species of flowering plants in India which account for 6% of all plant species in the world. Many plant species are being destroyed. Roughly 1/4 of all plant species in the world are at risk of being endangered or going extinct. The combination of global warming and habitat destruction are the sole reason for the disappearance of many plants. The following plants are very threatened in Tamilnadu: Acacia planifrons (Umbrella tree), Abutilon indicum, (Indian mallow), Chlorophytum tuberosum, (Musli) and Chlorophytum malabaricum (Malabar lily).
A special lecture on "Earth's Health is in Our Hands" at Kaliammal College of Education, Karur-Dt. (05.03.2018).
“Keystone
Species” are keep the ecosystem in balance. If suppose loss
one such species in the eco-system, entirely collapse the total eco-system and
further extended to the near eco-system. Keystone species maintain long-term
sustainability. Take for example humming birds. It is vital in the pollination
processes. Another good example is Grey
wolf. Hence, the present movement is preservation and restoration of keystone
species is very essential. Recently, Uma Ramakrishnan, National Centre for
Biological Science, Bangalore has pointed out, Pikas are keystone species.
Pikas mostly habitat in Himalayan ecosystem. And Black Clam is another keystone
species. Black Clam is highly available in Vembanad Lake. Such species
indirectly help to the fisheries field. Now, black clam is declined by human
activities in the form commercial business. In terrestrial ecosystem, number of
animals act as keystone species. Such as butterfly, earthworm, bees, birds and
ants etc. Sometime, buffaloes dung are useful to disseminate the rare seeds.
Hence, we aware about the Keystone Species for future generation.
A special lecture on "Bio-diversity as a goal of Environmental Education" at Karur Velalar College of Arts and Science for Women. Karur-Dt. (16.02.2018).
“Species diversity” means the whole of diversity life. It includes human-beings, animals, plants, fungi, bacteria, protozoa and viruses. Very rare and endemic species diversity has only found in the specific geographical region. The best example is Australia Kangaroo species. In the biosphere such kind of species not observed in any other parts world. And another best example is radiated tortoise groups found only in the Madagascar islands. Unicellular organisms are invisible to naked eye. Such as bacteria, archaea and protists. Cyano-bacteria is photosynthetic oxyntic groups. It is subclass of bacteria. It has found throughout the world. It is a ubiquitous nature. In archaea is very unfamiliar groups. It has found in hydrothermal springs of ocean. They do not have chlorophyll. From this lecture, I have motivated the students to know the taxonomical system of animals, plants and microbes.
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