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Understanding how biological diversity affects ecosystem functioning is a key question in modern ecology. This is of particular importance in the general context of recent global changes caused by human activities, such as water abstraction, flow regulation, shifts in agricultural practices, contamination, climate changes, and biological invasions. These changes are affecting biodiversity, ecosystem functioning, and their complex interactions simultaneously. However, our ability to understand how genes, individuals, populations, communities, and ecosystems may respond to such changes is limited, despite ecologists frequently being requested to provide policymakers and managers with predictions. Indeed, the species that composed biodiversity can establish complex trophic links between them in the ecosystems. This structure of food webs is under the permanent constraint of community dynamics, which connects species, populations, communities, and ecosystems. Therefore, the response of food webs to perturbations can help ecologists to better understand the relationship between biological diversity and ecosystem functioning.
Fish have been a major component of our diet and it has been suggested that fish/seafood consumption contributed to the development of the human brain, and this together with the acquisition of bipedalism, perhaps made us what we are. In the modern context global fish consumption is increasing. However, unlike our other staples, until a few years back the greater proportion of our fish supplies were of a hunted origin. This scenario is changing and a greater proportion of fish we consume now is of farmed origin. Aquaculture, the farming of waters, is thought to have originated in China, many millennia ago. Nevertheless, it transformed into a major food sector only since the second half of th...
This book examines how the adaptability and innovation of small-scale aquaculture farmers have been crucial to success in the region. It describes the relationship between aquaculture development in Asia to natural systems, social conditions and economics.
The Asia-Pacific region is remarkably diverse and wide ranging, geographically, in its flora and fauna, culturally, institutionally and economically. The region includes the two most populous countries in the world, China and India, a greater part of the Asian continent, the Australian continent, and many small islands, mostly in the Pacific Ocean, which are some of the smallest island nations in the world. Fisheries and aquaculture are socio-economically important sectors to most nations in the Asia-Pacific region and most nations in the region have high rates of fish consumption, mostly sourced from aquaculture although the small island nations depend to a greater extent on capture fisheri...
Reservoirs are specific aquatic ecosystems and have complex behaviors of both natural lakes and rivers, regulated significantly by their functions such as flood controlling, hydropower generation, irrigation and fishery. This volume offers a general description of reservoir limnology in tropical and subtropical China. It functions as a window opening to all the aquatic scientists with a main focus on reservoirs in southern China and at the same time also covering several important, large reservoirs such as the Three Gorge Reservoir and Danjiangko Reservoir. Topics discussed are zooplankton, phytoplankton and zoobenthos communities, cyanobateria, nutrient budget, sediments, biogeochemical cycling of mercury, fishery and eutrophication.
Ecosystems can be considered as dynamic and interactive clusters made up of plants, animals and micro-organism communities. Inevitably, mankind is an integral part of each ecosystem and as such enjoys all its provided benefits. Driven by the increasing necessity to preserve the ecosystem productivity, several ecological studies have been conducted in the last few years, highlighting the current state in which our planet is, and focusing on future perspectives. This book contains comprehensive overviews and original studies focused on hazard analysis and evaluation of ecological variables affecting species diversity, richness and distribution, in order to identify the best management strategies to face and solve the conservation problems.
This is an open access title available under the terms of a CC BY-NC-ND 4.0 License. It is free to read, download and share on Elgaronline.com. This illuminating book incisively surveys the complex legal regime of access and benefit-sharing in key aquaculture countries. With an international focus spanning countries across Africa, Asia, Europe and South America, the authors explore the application of international legal standards and how these translate into domestic measures.