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The Broads (Collins New Naturalist Library, Book 46)电子书

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作       者:A. E. Ellis

出  版  社:HarperCollins Publishers

出版时间:2017-02-28

字       数:73.2万

所属分类: 进口书 > 外文原版书 > 法律/政治/宗教

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The broads are shallow, reed-fringed lakes associated with rivers that wind slowly through the lowlands of east Norfolk and neighbouring Suffolk to flow into the North Sea through a common harbour at Great Yarmouth. Their waters are often ruffled by sea breezes and salt tides affect them from time to time; indeed, but for coast defences, they and many thousands of acres of adjacent marshes would be at the mercy of regular sea flooding. It used to be thought that they were relict pools of an estuary clogged by centuries of silting and reclaimed by the spread of marsh vegetation; but the recent researches of Dr. J. M. Lambert and her associates have proved (seechapter 3) that although estuarine conditions have prevailed temporarily in the lower parts of the east Norfolk river valleys on more than one occasion in the past, the broads originated comparatively recently as peat-pits, flooded and linked by artificial channels with the rivers, as the general water-level rose in late historic times.
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Title Page

Copyright

Contents

Editors’ Preface

Introduction to the Broadland Scene

Geology and Physical Background

1. The Early Geology of Broadland [J. E. Sainty and E. A. Ellis]

2. The Physiographical Evolution of the East Norfolk River Valleys since the Ice Age [J. N. Jennings and Charles Green]

3. The Origin of the Broads [J. M. Lambert, J. N. Jennings and C. T. Smith]

Vegetation

4. The Vegetation of Broadland [J. M. Lambert]

5. Some Flowering Plants of the Broads

6. Cryptogamic Plants of the Broads: Ferns, Mosses, Liverworts, Algae, Stoneworts, Lichens, Fungi and Mycetozoa

Invertebrate Animals

7. Life in fresh water, with special reference to the aquatic fauna of the Broads, and an account of the Crustacea [R. Gurney]

8. Miscellaneous Invertebrates: Freshwater Polyzoa and Leeches [E. A. Ellis]; Mollusca, Woodlice and Harvestmen [A. E. Ellis]; Spiders [E. Duffey]

9. Insects

Vertebrate Animals

10. Fishes

11. Amphibians and Reptiles

12. Birds [B. B. Riviere and E. A. Ellis]

13. Mammals

Activities of Man

14. Man in Broadland [R. R. Clarke]

15. Native River Craft of the Broads [H. Bolingbroke]

Picture Section

Appendix A: Maps [J. M. Lambert and J. N. Jennings]

Appendix B: Insects of the Broads

Appendix C: A note on Broadland Marshing Tools

Footnotes

Bibliography

Index

About the Publisher

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