The tanning industry is a major source of pollution worldwide, particularly in developing countries. The major public concern over tanneries has traditionally been about odours and water pollution from untreated discharges. Important poll- ants associated with the tanning industry include chlorides, tannins, chromium, sulphate and sulphides as well as trace organic chemicals and, increasingly, synthetic chemicals such as pesticides, dyes and finishing agents, as well as solvents. These substances are frequently toxic and persistent, and affect both human and environmental health. The primary focus in this book was to identify the recently developed ecoto- cological analytical trends (rapid, simple and inexpensive) related to the tanning industry on terrestrial and aquatic systems. The resultant research data reported, incorporates both field related and laboratory based techniques to address under- ing environmental problems in the tanning sector. The book also includes a chapter to explore the occupational hazards in a tannery environment caused by conta- nated dust. It was important to note that an optical set-up involving microscopy and digital imaging techniques was initially used to determine dust particle numbers and size distributions as a preamble to ascertaining the dust toxicity levels.

The scope of the study reported in this book entails understanding the constraints and providing potential diagnostics to Africa's leather sector, which is otherwise globally, one of the most lucrative agro-based industries in the world, estimated at over US$ 130Billion. One of the principle core thematic aspects of the leather sector is, characteristically, its long value chain with multiple socio-economic dimensions. These entail employability, creation of wealth, gender parity and rural development. Thusly, in an effort to stimulate scholarly discussion, the study argues that preemptively, the problems facing the leather value chain stratums are high losses, low value addition initiatives and unexplored opportunities that are synonymous with the Africa's leather industry. Indeed, the results of the research conceptualized opportunity management as a critical panacea towards value addition strategy for the leather sector in developing countries. In dealing with this concept, the book evaluated the various value chains phases and identified nine specific issues and variables drawn between value addition and the main leather strata. With this background, the study posed a main question and four sub questions to closely expound on related hypotheses and in lieu pursue four thematic aspects: trade, productivity, competitiveness, and innovation covered in twelve chapters of the book. Conclusively, the book manages to successfully conceptualize as a novelty that opportunity management is integral towards developing a leather value addition strategy for the developing countries with particular emphasis to Africa.

This book provides selected authorship on anthropogenic impacts caused by arsenic, lead, chromium and other pollutants and contaminants emanating from identified activities (e.g. tanning industry, effect of irrigation water and exposure to living tissue). The basis of the study is to improve on the knowledge and spread awareness to the general public. In this book, identified impacts associated with arsenic, chromium, lead, salinity induced processes, effluents and selected synthetic tannins provide a preview of how identified anthropogenic activities can degrade and affect terrestrial, aquatic and human health. In light of this, the individual chapters pursue (to some extent) an experimental and descriptive approach in explaining these aspects. All the contributors of these chapters are specialists in their areas of specialization with very strong research backgrounds. Thus, the book has a formidable basis of communicating the science that is relevant for agronomical activities when evaluating the effluent generation from anthropogenic view, its disposal, potential impacts towards irrigation related to specific geographical areas and the human occupational risks involved overall. It is, therefore, apparent that identifying the denudating aspects of the ecosystems is a paramount step towards building appropriate diagnostic, preventive and curative capabilities in managing the environmental sustainably.

This book provides an important insight that increases the scope of knowledge and invigorates readership in areas of lagoon dynamics and management. In attaining this zeal, both natural and anthropogenic dimension in determining associated impacts and conservation of these vital ecosystems partook in its paramount consideration. To further enrich the book's coverage, the authors' scientific excellence and overall acquired experience in their respective areas of specialisation and background was explored to encompass research from different geographic localities. The result of this approach brought about significant advantage due to the fact that opportunities arose where researched information from the tropic, Mediterranean and temperate based lagoon ecosystems were achieved, inertly, providing ecological examination at micro and macro organismic levels. Moreover, the book covers other specialised areas affecting directly or indirectly lagoon biogeochemistry and usage such as; species interaction, microbial threats, anthropogenic and edaphic pressures, application of biotechnology (eg: application of biomarkers), aquaculture, marine and inland conservation methodologies and waste management. Thusly, the book forms a crucial basis of improving existing knowledge on the management of lagoons and related habitat response to ecological impact. Concurrently, the book also provides a fundamental preview of how human aspiration of enhancing entertainment amenities, a craving for resources, and generation of waste and ultimate degradation of the lagoon ecosystem is and should be a global concern. Conspicuously indicated in the book are some of the lagoons ecosystems already being threatened or degraded. Therefore, the chapters have successfully provided the required width and breadth in disseminating vital information relating lagoon ecology and management.