Mangrove Ecosystems

Protection of the environment has nowadays become a major challenge and a condi tion for survival of future human generations and life on Earth in general. Yet it is still far too much of a dream or hope rather than a reality in the policy of our societies. Presently we are experiencing an unprecedented exponential growth of demography combined with a race for profit, resulting in excessive consumption particularly of en ergy, and a serious impact on the world ecosystems. Various types of pollutants and emerging new diseases not only disrupt the normal course of life, but also above this some of the atmospheric pollutants are most likely involved in the changing climate. We fear and literally shiver at the thought that the "changing climate" would ultimately disrupt the fragile thermodynamic equilibrium between the atmosphere and the oceans. Are we insensitive to these facts to the point of pushing our descendants, some genera tions ahead, into a new glacial period after a first period of warming up, at least, in northern Europe, like the one that took place 13 to 14 millennia ago? Surely the planet's nature is not prepared to be dominated by man and will go its way, whether humanity will be alive or dead.

The book provides an up-to-date account of mangrove forests from Asia, together with restoration techniques, and the management requirements of these ecosystems to ensure their sustainability and conservation. All aspects of mangroves and their conservation are critically re-examined. The book is divided into three sections presenting the distribution and status of mangrove ecosystems in Asia, the challenges they are facing, their issues and opportunities, and the management strategies for their conservation.

This book presents a comprehensive overview and analysis of mangrove ecological processes, structure, and function at the local, biogeographic, and global scales and how these properties interact to provide key ecosystem services to society. The analysis is based on an international collaborative effort that focuses on regions and countries holding the largest mangrove resources and encompasses the major biogeographic and socio-economic settings of mangrove distribution. Given the economic and ecological importance of mangrove wetlands at the global scale, the chapters aim to integrate ecological and socio-economic perspectives on mangrove function and management using a system-level hierarchical analysis framework. The book explores the nexus between mangrove ecology and the capacity for ecosystem services, with an emphasis on thresholds, multiple stressors, and local conditions that determine this capacity. The interdisciplinary approach and illustrative study cases included in the book will provide valuable resources in data, information, and knowledge about the current status of one of the most productive coastal ecosystem in the world.

Mangroves are ecosystems situated between land and sea. They are frequently found in tropical and subtropical areas and occupy approximately 18.1 million hectares of the planet. In this book, the authors present current research in the study of the biogeography, genetic diversity and conservation strategies of mangroves. Topics discussed include the biodiversity and biotechnological potential of endophytic fungi from mangrove forests; mangrove conservation in Trinidad and Tobago, West Indies; actinomycetes in mangrove environments; xylariaceae and mangroves; multitemporal analysis of thermal field modification and its repercussions in the landscape of the Itanhaem River estuarine region in Brazil; mangrove finch camarhynchus heliobates; analysis of coastal erosion and forest loss in the Sundarbans mangrove using time-series satellite data; the mangrove ecosystem conservation strategy in the Niger Delta, Nigeria; Madagascar Teal Anas bernieri; and a biogeochemistry study in mangrove ecosystem sediments using a dialysis porewater sampler.

Mangroves are basically salt tolerant forest ecosystems found mainly in tropical and sub-tropical inter-tidal regions. Till about 1960s, mangroves were largely viewed as “economically unproductive areas” and were therefore destroyed for reclaiming land for various economic and commercial activities. Gradually, with the passage of time, the economic and ecological benefits of mangroves have become visible and their importance is now well appreciated. Today, mangroves are observed in about 30 countries in tropical subtropical regions covering an area of about 99,300 Sq.Km. However, during the past 50 years, over 50% of the mangrove cover has been lost, mainly because of the increased pressure of human activities like shrimp farming and agriculture, forestry, salt extraction, urban development, tourist development and infrastructure. Also, dam on rivers, contamination of sea waters caused by heavy metals, oil spills, pesticides and other products etc. have been found to be responsible for the decline of mangroves. Although the temperature effect on growth and species diversity is not known, sea-level rise may pose a serious threat to these ecosystems The present book addresses all these important issues in separate chapters with some interesting case studies whose data may serve as pathfinder for future researches in the sphere of the influence of climate change on mangrove ecosystem. The role of mangroves in the sector of bioremediation is a unique feather in the crown of this coastal and brackishwater vegetation that may be taken up by the coastal industries in order to maintain the health of ambient environment. This book seeks to discover and to assess the vulnerability of climate change on mangrove flora and fauna, their role in carbon sequestration and some interesting case studies by some groups of dedicated researchers that may serve as the basis of future climate related policies.

The last few decades have seen a rapid growth of interest in the mangrove ecosystems. This is due, on the one hand, to the perception that mangrove ecosystems are valuable resources, and, on the other hand, due to vested economic interests. There is an accelerated rate of destruction of mangroves worldwide. Almost all nations of the world tropical belt are concerned with the conservation of this natural wealth, but surreptitiously permit the misuse of mangroves for quick monetary returns unabatedly. The scientific community and decision makers of many nations are now in a state of alert, requesting sound directives for the sustainable use of mangroves worldwide. The present publication is an attempt to present in an organized manner the present state of knowledge which could be useful for decision makers and of interest to all those who see the ecological and economical potential of the various types of mangrove ecosystems.

Mangroves are salt-adapted plants that are found along many of the world's tropical and sub-tropical coastlines. Regrettably, these plants are being lost due to over-exploitation, pollution, conversion to agriculture and aquaculture and other causes. This is having important consequences for local human populations that traditionally rely on this resource, and is upsetting the fine balance needed to maintain this highly productive ecosystem. This text brings together some papers from two recent international symposia on the mangrove ecosystem. It provides an outline of future directions in mangrove research considered to be urgent by prominent mangrove scientists. Contributions include aspects of population differentiation in mangrove species that have been very little studied so far, ecological function, and restoration and management of the mangrove ecosystem. This book is intended for scientists actively working in the areas of mangrove ecology and management.