This book is an initiative of a subcommittee of SCOPE (Scientific Committee on Problems of the Environment) which realized that the integrity of many natural ecosystems was being threatened by the ingress of invasive species.
"The study of species invasions to date has focused mainly on applied aspects. This book explores the potential of invasive species studies to offer insights into fundamental research issues in ecology, evolution, conservation biology, and biogeography. Contributed chapters by provide a framework applicable to general ecological studies"--Provided by publisher.
A core textbook series that aims to provide students with accessible, up-to-date accounts of Ecogeography - the marriage of ecology with geography - in the primary terrestrial and marine environments. This is the first book in the series on Mediterranean Ecogeography. Biological diversity in the Mediterranean Basin is amongst the highest of any region on earth, both in terms of total species numbers and endemism. The flora is estimated at about 25,000 species of flowering plants and ferns, compared with about 6000 species in non-Mediterranean Europe. About 50% of these are endemic. Diversity amongst vertebrate animals is also high, though endemism rates are lower than for plants. The high levels of diversity contribute to, and are a reflection of, the considerable variability of landscape. This results from a combination of factors including geological and tectonic history, relief and physiography, climate, geomorphological processes, hydrology, soils, the incidence of fires and impact of human activities. The landscapes of the Mediterranean Basin are thus varied and fragmented; a mosaic of ecosystems and communities. Mediterranean Ecogeography aims to examine and explain this heterogeneity, and the approach is focused on the ecogeography of the region. Analysing the factors which account for the present distributions of plants and animals, and the functioning of ecosystems within the Mediterranean Basin can help in the understanding of the relationship between people and natural ecosystems. A key to the conservation of these ecosystems is the wise use of resources, biological and physical. In addition, it is vital to assess how the natural environments of the region will respond to further change. In the last twenty years, understanding of the functioning of mediterranean-type ecosystems has advanced through several international projects. This book draws upon the findings of these, and other research in the Mediterranean Basin, to present a comprehensive text on a key region of the world, and the problems and prospects of its environmental exploitation.
In view of the massive change in the area of distribution of many world biota across classical biogeographical realms, and of the drastic restructuring of the biotic components of numerous ecosystems, the Scientific Committee on Problems of the Environment (SCOPE) decided at its general Assembly in Ottawa, Canada, in 1982 to launch a project on the 'Ecology of Biological Invasions'. Several regional meetings were subsequently organized within the framework of SCOPE, in order to single out the peculiarities of the invasions that took place in each region, the behaviour of their invasive species and the invasibility of their ecosystems. Most noteworthy among such workshops were one in Australia in August 1984, one concerning North America and Hawaii in October 1984, and one dealing with southern Africa in November 1985. A leitmotiv of these workshops was that most of the invasive species to those regions were emanating from Europe and the Mediterranean Basin, inadvertently or intentionally introduced by man. It was therefore considered as a timely endeavour to organize the next regional meeting in relation to this region. The workshop on 'Biological Invasions in Europe and the Mediterranean Basin' was held in Montpellier, France, 21 to 23 May 1986, thanks to the financial support of SCOPE and of the A.W. Mellon Foundation, and the logistic facilities of the Centre National de la Recherche Scientifique (C.N .R.S.).
The world's mediterranean-type climate regions (including areas within the Mediterranean, South Africa, Australia, California, and Chile) have long been of interest to biologists by virtue of their extraordinary biodiversity and the appearance of evolutionary convergence between these disparate regions. These regions contain many rare and endemic species. Their mild climate makes them appealing places to live and visit and this has resulted in numerous threats to the species and communities that occupy them. Threats include a wide range of factors such as habitat loss due to development and agriculture, disturbance, invasive species, and climate change. As a result, they continue to attract far more attention than their limited geographic area might suggest. This book provides a concise but comprehensive introduction to mediterranean-type ecosystems. It is an accessible text which provides an authoritative overview of the topic. As with other books in the Biology of Habitats Series, the emphasis in this book is on the organisms that dominate these regions although their management, conservation, and restoration are also considered.
Some biological invasions have marked ecological and economic effects. But most fail, and most of those that succeed have small effects. This volume should be of interest to plant ecologists, plant conservationists, population biologists, agriculturalists
Biological invasions are considered to be one of the greatest threats to the integrity of most ecosystems on earth. This volume explores the current state of marine bioinvasions, which have been growing at an exponential rate over recent decades. Focusing on the ecological aspects of biological invasions, it elucidates the different stages of an invasion process, starting with uptake and transport, through inoculation, establishment and finally integration into new ecosystems. Basic ecological concepts - all in the context of bioinvasions - are covered, such as propagule pressure, species interactions, phenotypic plasticity, and the importance of biodiversity. The authors approach bioinvasions as hazards to the integrity of natural communities, but also as a tool for better understanding fundamental ecological processes. Important aspects of managing marine bioinvasions are also discussed, as are many informative case studies from around the world.
Many conservationists argue that invasive species form one of the most important threats to ecosystems the world over, often spreading quickly through their new environments and jeopardising the conservation of native species. As such, it is important that reliable predictions can be made regarding the effects of new species on particular habitats. This book provides a critical appraisal of ecosystem theory using case studies of biological invasions in Australasia. Each chapter is built around a set of eleven central hypotheses from community ecology, which were mainly developed in North American or European contexts. The authors examine the hypotheses in the light of evidence from their particular species, testing their power in explaining the success or failure of invasion and accepting or rejecting each hypothesis as appropriate. The conclusions have far-reaching consequences for the utility of community ecology, suggesting a rejection of its predictive powers and a positive reappraisal of natural history.