Water Hyacinth, Nile Perch, and Pollution PDF Download

Author: Geoffrey W. Howard
Publisher:
ISBN:
Category : Ecosystem management
Languages : en
Pages : 102

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Author: Jeremiah Mutio Kitunda
Publisher: Lexington Books
ISBN: 149852463X
Category : History
Languages : en
Pages : 337

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Humans and animals are not the only creatures that migrate. Plants also do. This book is a comprehensive and analytical account of the migration of an Old World plant, water hyacinth (also known to botanists as Eichhornia Crassipes) from the Amazon Basin and surrounding areas to Africa through human agency from about 1800 to the present. As an integrative work, which benefits from methodologies and conceptual approaches drawn from limnology, botany, biology, geography, history, ecology and other social sciences and humanities, the book further explores the political, economic, and ecological consequences of the spread of water hyacinth from its native habitat through European botanical gardens to Africa rivers, lakes, dams, and wetlands. In part, as a narrative of Western tinkering with African ecologies gone awry, the study has strong lessons for environmental historians, and social scientists as well as contemporary foundations, aid workers, development experts and African governments. Although it may appear to be a micro-history of a single plant, water hyacinth, it illuminates broader issues in the history of the modern environment in Africa and similar studies worldwide. This study is primarily rooted on the histories of colonialism, bioinvasion, environmental realities and experiences in Africa. The highly visible pathways of hyacinth’s spread across international frontiers along watercourses and communication networks means that not only is this a trans-boundary environmental affair, but one which directly involves bilateral relations between African states.

Author: United Nations
Publisher: UNEP/Earthprint
ISBN: 9280726919
Category : Reference
Languages : en
Pages : 576

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This is the second comprehensive report on the state of Africa's environment, produced in collaboration with the African Ministerial Conference on the Environment (AMCEN). This report highlights the central position Africa's environment continues to play in sustainable development, as well as its potential to achieve progress in the implementation of the Millennium Development Goals. The report profiles Africa's environmental resources as an asset for the continent's development. It highlights the opportunities presented by the region's natural resource base to support the continent's development. It also underscores the concept of sustainable livelihoods, and the importance of the environmental initiatives in supporting them.

Author: Arihant Experts
Publisher: Arihant Publications India limited
ISBN: 9313199335
Category :
Languages : en
Pages : 605

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Every year lakhs of students appear for the NEET Exam to pursue their dream of becoming a “Doctor”. In order to qualify this exams students need have clear concepts, strong basic foundation of the subjects and thorough practice. “TEST DRIVE FOR NEET 2020” is the one and only complete assessment and Practice package for the NEET Exam. This book is prepared as per the latest of the syllabus. It provides 30 Unit Tests for all three sections: Physics, Chemistry and Biology, 12 Mock Tests which are strictly based on the Latest Examination Pattern and more 1000 Subjectwise most difficult questions of 15 Years’ of NEET & AIPMT moreover, the solutions provided for the questions are authentic and having a conceptual approach for the complete practice. This book will help you to score more in the exam as well as in the academics if thorough practice done from this book. TABLE OF CONTENT Module 1: Prep Analysis, Module 2: Prep Catalysis, Module 3: The NEET Edge.

Author: Fred Pearce
Publisher: Beacon Press
ISBN: 0807039551
Category : Nature
Languages : en
Pages : 266

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Named one of the best books of 2015 by The Economist A provocative exploration of the “new ecology” and why most of what we think we know about alien species is wrong For a long time, veteran environmental journalist Fred Pearce thought in stark terms about invasive species: they were the evil interlopers spoiling pristine “natural” ecosystems. Most conservationists and environmentalists share this view. But what if the traditional view of ecology is wrong—what if true environmentalists should be applauding the invaders? In The New Wild, Pearce goes on a journey across six continents to rediscover what conservation in the twenty-first century should be about. Pearce explores ecosystems from remote Pacific islands to the United Kingdom, from San Francisco Bay to the Great Lakes, as he digs into questionable estimates of the cost of invader species and reveals the outdated intellectual sources of our ideas about the balance of nature. Pearce acknowledges that there are horror stories about alien species disrupting ecosystems, but most of the time, the tens of thousands of introduced species usually swiftly die out or settle down and become model eco-citizens. The case for keeping out alien species, he finds, looks increasingly flawed. As Pearce argues, mainstream environmentalists are right that we need a rewilding of the earth, but they are wrong if they imagine that we can achieve that by reengineering ecosystems. Humans have changed the planet too much, and nature never goes backward. But a growing group of scientists is taking a fresh look at how species interact in the wild. According to these new ecologists, we should applaud the dynamism of alien species and the novel ecosystems they create. In an era of climate change and widespread ecological damage, it is absolutely crucial that we find ways to help nature regenerate. Embracing the new ecology, Pearce shows us, is our best chance. To be an environmentalist in the twenty-first century means celebrating nature’s wildness and capacity for change.

Author: Lisa Palmer
Publisher: St. Martin's Press
ISBN: 1250084202
Category : Political Science
Languages : en
Pages : 252

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Book Description
The U.N. predicts the Earth will have more than 9.6 billion people by 2050. With resources already scarce, how will we feed them all? Journalist Lisa Palmer has traveled the world for years, documenting the cutting-edge innovations of people and organizations on the front lines of fighting the food gap.

Author: Career Point Kota
Publisher: Career Point Publication
ISBN: 9386260549
Category : Science
Languages : en
Pages : 338

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Whenever a student decides to prepare for any examination, her/his first and foremost curiosity arises about the type of questions that he/she has to face. This becomes more important in the context of NEET/AIPMT where there is a neck-to-neck race. For this purpose, we feel great pleasure to present this book before you. We have a to provide chapter wise questions asked in NEET from 1993 to 2021 along with solutions. Features Chapterwise Solved Papers with Model Test Papers with detailed solution. Topic-wise collection of past NEET questions (1993 - 2021). Solutions have been given with enough diagrams, proper reasoning for better understanding. Students must attempt these questions immediately after they complete the unit in their class/school/home during their preparation.

Author: Oswaal Editorial Board
Publisher: Oswaal Books
ISBN: 9359584002
Category : Study Aids
Languages : en
Pages : 685

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Book Description
Description of the product • Chapter-wise and Topic-wise presentation • Chapter-wise Objectives: A sneak peek into the chapter • Mind Map: A single page snapshot of the entire chapter • Revision Notes: Concept based study materials • Tips & Tricks: Useful guidelines for attempting each question perfectly • Some Commonly Made Errors: Most common and unidentified errors are focused • Expert Advice: Oswaal Expert Advice on how to score more • Oswaal QR Codes: For Quick Revision on your Mobile Phones and Tablets

Author: Arne Jernelöv
Publisher: Springer
ISBN: 3319553968
Category : Technology & Engineering
Languages : en
Pages : 302

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This book examines the long-term fate of invasive species by detailing examples of invaders from different zoological and botanical taxa from various places around the world. Readers will discover what happened, after a century or so, to 'classical' invaders like rabbits in Australia, house sparrows in North America, minks in Europe and water hyacinths in Africa and Asia. Chapters presented in the book focus on eighteen species in the form of in-depth case studies including: earthworms, zebra mussels, Canadian water weed, Himalayan balsam, house sparrows, rabbits, crayfish plague, Colorado beetles, water hyacinths, starlings, Argentine ant, Dutch elm disease, American mink, cane toad, raccoons, Canadian beavers, African killer bees and warty comb jelly. Invaded areas described are in Africa, Asia, Australia, Europe, North America, Pacific islands, and South America. Readers will get some ideas about the likely future of current invaders from the fate of old ones. This book is intended for undergraduates studying environmental sciences, researchers and members of environmental NGO's.

Author:
Publisher:
ISBN:
Category : Lake ecology
Languages : en
Pages : 52

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