Nayar t s (17 risultati)

Condizione: New.

Condizione: New.

Condizione: New.

Condizione: New.

Condizione: New.

Condizione: New.

Condizione: New. pp. xii + 157.

Condizione: New. pp. xii + 157 Indices 1st Edition.

Condizione: New.

Condizione: New. pp. xii + 157.

Condizione: As New. Unread book in perfect condition.

Condizione: New.

Hardcover. Condizione: New. Contents: Foreword. Preface. Alphabetical index of family names. 1. General introduction. 2. Methodology. 3. Pollen keys. 4. Systematic descriptions. 5. Magnoliopsida. 6. Liliopsida. 7. Selected bibliography. 8. Glossary of palynological terms. Index. Scientific names. Authors' names. Plates. The pollen is the most vital unit in the flowering plants with a special structure and function. It is a single cell, in a way, with a shell, the exine, withstanding destruction and decay, thereby ensuring the prime need of protection of the tiny bit of protoplasm inside. At the same time as giving protection, the exine embodies in it such morphological characteristics that serve to identify the plant it belongs to, thus becoming useful in studies of plant taxonomy and phylogeny. With the advancements in biological techniques and analysis, the pollen unit has come to become an important parameter for both basic and applied purposes involving not only plant taxonomy but a wide range of areas including the emerging ones like pollution, biotechnology and environment where pollen is used as an index in solving an array of problems relating to human health and welfare. In India, the study of pollen has a short history traced back to 1947 when the late Prof. Birbal Sahni stated that "the material is vast but trained workers are lacking." His concern was the identification of fossil pollen occurring in a dispersed state in the sediments of Tertiary and later geological periods, which were local and regional in occurrence. In such a context, the preparation of regional pollen floras became important and the first step in that direction was the publication of the "Pollen Flora of the Western Himalayas" which was primarily meant for the identification of the Quaternary fossil pollen from the Karewa sediments of Kashmir. In the following years the pollen flora investigations did not gain the pace it deserved to, which not only could help identification of dispersed pollen in fossil sediments, honeys or air but also serve to contribute immensely towards the preparation of the Pollen Flora of India, ultimately. It is in this background that the elaborate study made by Dr T S Nayar on the "Pollen Flora of Maharashtra State" has a special significance which, I hope, will set a chain reaction covering the various states/floral zones of the country. The morphological descriptions of the pollen grains given by Dr Nayar are primarily based on the data collected by means of the light microscope but for a few, observations made from SEM pictures. Supporting the data are over 1100 microphotographs spread over 67 plates which by itself form an album for reference to future workers engaged in pollen identifications. The pollen keys provided should help taxonomists in settling the identity of taxa, both at generic and species levels. …

Condizione: As New. Unread book in perfect condition.

Hardcover. Condizione: Good. Contents: Foreword. Preface. Gathered Gaiety of a decade : a report on the tenth anniversary celebration of the declaration of Silent Valley a National Park. I. Milestones of destiny: 1. Silent Valley National Park--a biological paradise/M.S. Swaminathan. 2. Silent Valley--a case study/Sugatha Kumari. 3. Silent Valley--a poem on the earth/Justice K. Sukumaran. 4. The Saga of Silent Valley--where was the cutting edge of success?/T.M. Manoharan, G. Harikumar and K. Geetha. 5. The media's role in forest conservation: a case study of the campaign to save the Silent Valley/Anand Parthasarathy and S. Rangamony. 6. The Silent Valley crusade/M.K. Prasad. 7. A photonaturalist in Silent Valley/K. Jayaram. 8. Give the young ones a better world/Mrinalini Sarabhai. 9. Silent Valley--reflections after two decades/S. Sathis Chandran Nair. 10. A treasure saved and sustained/M.A. Partha Sarathy. II. Handling the heritage: 1. Silent Valley National Park--a historical perspective/K. Sasidharan Nair, K. Balachandran Thampi and N.V. Trivedi Babu. 2. Status paper on Silent Valley National Park--the management perspective/V.K. Sinha, V.K. Uniyal and G. Rennenson. 3. Silent Valley--a candidate for world natural heritage site/P.K. Surendranathan Asari. 4. Problems and prospects in protecting Silent Valley National Park/P.N. Unnikrishnan. III. Its denizens--plants: 1. Forest types of Silent Valley/S. Chand Basha. 2. Biodiversity and ecological status of Silent Valley as revealed by its angiosperm flora/K.S. Manilal. 3. Remote sensing in biodiversity conservation with special reference to Silent Valley and its environs/B.K. Ranganath, S. Adiga, K. Radhakrishnan and T.M. Manoharan. 4. Plant wealth of Silent Valley/P. Pushpangadan and C. Sathish Kumar. 5. Additions to the flora of Silent Valley/N. Sasidharan and P.V. Anto. 6. Chronicle of discoveries--the pursuit of plants/S.D. Biju. 7. Occurrence of Sri Lankan endemic plants in Silent Valley/C.R. Suresh. 8. Rare and threatened plants of Silent Valley/N. Venkatasubramanian, K.R. Sasidharan, B. Gurudev Singh and N.P. Mahadevan. 9. Orchids of Silent Valley/C. Sathish Kumar. 10. Wild crop genetic resources of Silent Valley with special reference to in situ conservation of Piper species/K.C. Velayudhan, V.A. Amalraj, Z. Abraham, K. Joseph John, M. Abdul Nizar and K.I. Asha. 11. Araceae of Silent Valley and neighbourhood/M. Sivadasan. 12. Observations on the epiphytic flora of Silent Valley/Muktesh Kumar & Stephen Sequiera. 13. Species preferences of two endangered primates in the tropical rain forests of Silent Valley/T.S. Nayar, M.P. Nayar and M. Balakrishnan. IV. Its denizens - animals: 1. Some generalizations based on faunistic studies in Silent Valley/K.S.S. Nair. 2. Mammals of Silent Valley/M. Balakrishnan. 3. Butterflies and moths of Silent Valley National Park/George Mathew. 4. Song of rain/P.K. Uthaman. 5. Faunistic novelties of Silent Valley/C. Radhakrishnan, K.C. Gopi and P.S. Easa. 6. Lion tailed macaque in Silent Valley National Park/K.K. Ramachandran and Gigi K. Joseph. 7. Bird community structure in the three different vegetation types of Silent Valley and adjacent forest area/P. Pramod. 8. Snakes of Silent Valley/Romulus Whitaker and Gerard Martin. 9. The lower vertebrates of Silent Valley/P.S. Easa and C.P. Shaji. 10. An introduction to the avifauna of Silent Valley/R. Sugathan. 11. The less known lesser carnivores/T.R.K. Yaganand and Ajith Kumar. References. Index. From the preface: " This anthology of 38 articles on various aspects of Silent Valley is the culmination of the selfless endeavour of many persons who love Silent Valley and cherish the memory of the popular campaign for its conservation. It contains papers on the historical and managerial evolution of Silent Valley National Park as well as on its biodiversity. The decision to bring out such a comprehensive volume on Silent Valley was taken in a jubilant meeting on 25th November 1995, convened to celebrate the 10th anniversary of.…

Condizione: Very Good. L'article présente quelques marques plis de lecture et/ou de stockage mais du reste en assez bon état. - Envoi rapide et soigné dans une enveloppe à bulle depuis France. in4. 1994. Broché. 133 pages. Very Good.

Hardcover. Condizione: New. Kerala is a narrow strip of lush green land with a geographical area of 39,863 sq km stretching along the western coast of the Peninsular India. Part of the Western Ghats, the state mainly harbours wet, semi evergreen, moist and dry deciduous forests, sholas and grasslands. The world knew about the plants of Kerala through van Rheede`s Hortus Malabaricus (1678-1693). Since then hundreds of publications have come out but there is no work which comprehensively deals with the entire flowering plants of the state. This handbook fills the gap. It provides correct name, important synonyms, habit, reference to good descriptions and illustrations, distribution in the world, the Western Ghats and Kerala, indigenous, endemic and exotic nature, conservation status, phenology, uses, Malayalam names and other important details. The work treats 4681 species, 58 subspecies and 287 varieties as occurring in Kerala. An authentic guide for all who deal with the flowering plants of Kerala, the Western Ghats, India and the tropics, this volume is structured in a precise and user friendly manner to access any single or collective information of a species with the least effort. This makes the handbook unique and anybody`s first point of reference.…