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Author: M. Ingrouille Publisher: Springer Science & Business Media ISBN: 9401112320 Category : Science Languages : en Pages : 363
Book Description
The native British flora is today relatively ant species on the continent, such as Picea impoverished. Today the British Isles has a abies (Norway spruce), did not get into Britain flora of only about 1500 species of native in time. However, we must not over flowering plants. France and Spain, each emphasize the importance of Britain being an geographically only about twice the area, island. A comparison of floras on either side have 3-4 times as many species each. The of the English Channel shows that there are comparison is more marked when consider species present in England and not in ing the endemic species, those specialities of northern France as well as vice versa. Many each geographical region which grow of the species present in northern France but nowhere else. If only normal sexual species absent from England are weeds adapted to are considered, then there are only about 13 French agriculture. Others may be limited endemic species in the British Isles while 1000 not by the sea but by the climate. species are endemic to Spain. Nevertheless, the example of Ireland, However, the poverty of the British flora is which was isolated much earlier than the rest not a unique phenomenon. The whole of of the British Isles, does show the effect of north-western Europe, an area including isolation because it does have a much poorer northern France and much of Germany and flora and fauna.
Author: M. Ingrouille Publisher: Springer Science & Business Media ISBN: 9401112320 Category : Science Languages : en Pages : 363
Book Description
The native British flora is today relatively ant species on the continent, such as Picea impoverished. Today the British Isles has a abies (Norway spruce), did not get into Britain flora of only about 1500 species of native in time. However, we must not over flowering plants. France and Spain, each emphasize the importance of Britain being an geographically only about twice the area, island. A comparison of floras on either side have 3-4 times as many species each. The of the English Channel shows that there are comparison is more marked when consider species present in England and not in ing the endemic species, those specialities of northern France as well as vice versa. Many each geographical region which grow of the species present in northern France but nowhere else. If only normal sexual species absent from England are weeds adapted to are considered, then there are only about 13 French agriculture. Others may be limited endemic species in the British Isles while 1000 not by the sea but by the climate. species are endemic to Spain. Nevertheless, the example of Ireland, However, the poverty of the British flora is which was isolated much earlier than the rest not a unique phenomenon. The whole of of the British Isles, does show the effect of north-western Europe, an area including isolation because it does have a much poorer northern France and much of Germany and flora and fauna.
Author: Robert Lloyd Praeger Publisher: Forgotten Books ISBN: 9781330330654 Category : Science Languages : en Pages : 218
Book Description
Excerpt from Aspects of Plant Life With Special Reference to the British Flora In the following chapters an attempt is made to deal, in a quite elementary way, with some of the wider aspects of plant life - to discuss questions which arise in the mind from a contemplation of the vegetation which clothes with a green mantle the surface of our own country. No essay is made to enumerate or define the plants to be met with in the different types of ground, or in the different geographical areas, which go to make up the British Isles: there are already plenty of excellent handbooks and local floras in which that aspect of native plant life is treated. The vegetation is taken rather as a whole, and its whence, and when, and how are considered with as little of technical phraseology as the subject allows. The influence on plants of their physical environment, and the intimate inter-relations of the vegetable kingdom with the other great manifestation of organic life, the animal kingdom, are briefly considered, as is also the unique relation existing between the plant world and the human race. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Godwin Publisher: Cambridge University Press ISBN: 9780521269414 Category : Science Languages : en Pages : 582
Book Description
The chief aim of this book is the reconstruction of the processes and events that have determined the present flora and vegetation of the British Isles, first of all through the long ages when natural conditions prevailed and cycles of glaciations and recessions and slow geological processes were in charge, and afterwards through the nearer and much shorter span of time during which, from the Neolithic onwards, human interference has progressively and severely altered the scene. This is an exercise in biogeography that Darwin called 'that grand subject, that almost keystone to the laws of nature'. But instead of adopting Darwin's conjectural approach, based largely on circumstantial evidence, what this 1975 second edition achieves is a factual reconstruction of events by records of the actual presence of individual species or genera, in large numbers, at particular sites and specified times through the geological and historic record.
Author: Andrew C. Millington Publisher: Springer Science & Business Media ISBN: 1461515238 Category : Science Languages : en Pages : 333
Book Description
In recent years, the conservation of tropical forests has received worldwide publicity whereas effective forest management, particularly for timber extraction, has attracted little attention and gained some notoriety. The overall aim of the present paper was to examine how environmental micro-variation in the Chiquibul Forest Reserve of Belize can influence species distribution and thereby inform management strategy. The paper deals first with the background to forest management in Belize, then considers the methodology used in the present study and fin~~ly assesses the preliminary results. The specific objectives are: (1) to assess the effects of changing scale on the variability of selected individual soil properties in forest plots within the same vegetation class; and (2) to examine the variation in soil properties and tree species distribution, and to integrate environmental and ecological data over a range of scales. BACKGROUND Whereas the global and regional distribution of tropical forests is broadly governed by climatic and altitudinal variation, individual forest tracts need to consider a range of other, locally important factors to explain species distribution and change. With very high species diversity, tropical forests present a major challenge in the attempt to unravel controlling factors in distribution and growth (Swaine et aI. 1987). Research that attempts to explain diversity has looked at species distribution according to a range of factors, with a general recognition that soil fertility plays a significant if ill defined role (Swaine 1996).
Author: Ian D. Rotherham Publisher: Springer ISBN: 3319497979 Category : Science Languages : en Pages : 100
Book Description
This is a challenging new approach to understanding ecological systems especially in urban and urbanised areas. Synthesising current ideas and approaches the book develops an historic context to ecological fusion and recombinant or hybrid ecosystems. With massive climate change and other environmental fluxes, this volume provides insight into consequences for future ecologies. Invasive and non-native or alien species are spreading, often aggressively around the globe. However, much current thinking in ecology and nature conservation fails to accommodate the consequences of changing environmental conditions and fusion of both species and ecological communities. Whether or not conservationists accept ecological change, factors such as urbanisation and globalisation combine with climate and other changes to trigger new hybrid communities and ecologies. Embedding this approach into current ecological thinking this book presents an overview of ideas set in the exemplar case study area of the British Isles. However, the approaches, ideas and conclusions presented here will find application in ecosystem studies and in nature conservation around the world.
Author: Clement Reid Publisher: ISBN: 9781330803035 Category : Science Languages : en Pages : 232
Book Description
Excerpt from The Origin of the British Flora About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Oliver Rackham Publisher: Weidenfeld & Nicolson ISBN: 9781474614023 Category : Languages : en Pages : 480
Book Description
From its earliest origins to the present day, this award-winning, beautifully written book describes the endlessly changing character of Britain's countryside. 'A classic' Richard Mabey Exploring the natural and man-made features of the land - fields, highways, hedgerows, fens, marshes, rivers, heaths, coasts, woods and wood pastures - he shows conclusively and unforgettably how they have developed over the centuries. In doing so, he covers a wealth of related subjects to provide a fascinating account of the sometimes subtle and sometimes radical ways in which people, fauna, flora, climate, soils and other physical conditions have played their part in the shaping of the countryside. 'One thing is certain: no one would be wise to write further on our natural history, or to make films about it, without thinking very hard about what is contained in these authoritative pages' COUNTRY LIFE
Author: M. Ingrouille
Author: M. Ingrouille
Author: James Frederick Bevis
Author: Robert Lloyd Praeger
Author: Clement Reid
Author: Godwin
Author: Andrew C. Millington
Author: Ian D. Rotherham
Author: Clement Reid
Author: Oliver Rackham
Author: Arthur Reginald Horwood