Download e-book for iPad: A Course in Mathematical and Statistical Ecology by Anil Gore

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By Anil Gore

ISBN-10: 9048156165

ISBN-13: 9789048156160

ISBN-10: 9401598118

ISBN-13: 9789401598118

As the realm enters the recent millennium, mankind faces a chain ofnew prob­ lems, lots of them created by means of guy himself. those contain overpopulation, air and water toxins, worldwide warming, accumulation of greenhouse gases, darnage to the ozone layer and lack of biodiversity. might be those difficulties have been round even previous in an incipient degree, yet they've got now assumed worldwide proportions and are uppermost within the minds of all. A typical con­ series is improved curiosity in sciences hooked up with those difficulties. Ecology is a box that's immensely valuable in figuring out a lot of them. within the seventies, nature conservation turned a priority of large sections of society, well past the small crew of professional ecologists. Species extinc­ tion and depletion of organic assets have been obvious as significant threats to human welfare. It used to be for that reason usual for scientists from various disci­ plines to hunt purposes at the back of those advancements. We have been no exceptions and while chance to have interaction with ecologists as statistreal specialists got here, we came upon ourselves studying increasingly more of ecology and evolution­ ary biology. numerous years in the past we proposed beginning of an non-compulsory one semester direction on statistical ecology for graduate scholars of information of Pune University.

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Extra resources for A Course in Mathematical and Statistical Ecology

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Removing or harvesting individuals with low reproductive value is prudent. It is better to seil or eat eggs which have lower reproductive value compared to an egg laying hen. A salmon fernale that lays eggs just once before death has no reproductive value after spawning, and hence can be harvested without any effect on future population. Genes that cause mortality among individuals with high reproductive value are prone to be eliminated. Genes that cause health problems in old age are not eliminated.

If you consider lifespan of an organism as an adult before senescence sets in then for that limited period the model is appropriate. Here we have assumed that death is possible at any positive age . e-A(x-B) x> e > 0,>' > o. Migratory birds which come to India in winter from Siberia are generally above one year in age . Hence the present model with e = 1 may be relevant in this case. lf we have n independent observations Xl, X2, •. , x n on lifetimes under such a model, the maximum likelihood estimators of e and >.

Thus V x is a scaled value. If V x = 2, it means female at age x has twice the reproductive value compared to a newborn female. The concept of reproductive value has important implications in ecology and evolution. Removing or harvesting individuals with low reproductive value is prudent. It is better to seil or eat eggs which have lower reproductive value compared to an egg laying hen. A salmon fernale that lays eggs just once before death has no reproductive value after spawning, and hence can be harvested without any effect on future population.

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A Course in Mathematical and Statistical Ecology by Anil Gore


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