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Author: Daniel Walters Schneider
Publisher:
ISBN:
Category :
Languages : en
Pages : 416
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Book Description
Author: Daniel Walters Schneider
Publisher:
ISBN:
Category :
Languages : en
Pages : 416
Get Book Here
Book Description
Author: Daniel Walters Schneider
Publisher:
ISBN:
Category :
Languages : en
Pages : 206
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Book Description
Author: Beat Oertli
Publisher: Springer Science & Business Media
ISBN: 9048190886
Category : Science
Languages : en
Pages : 372
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Book Description
Ponds are an exceptional freshwater resource around the world and represent thirty percent of the global surface area of standing water. Furthermore, the millions of ponds which exist exhibit a particularly high biodiversity and have a high potential for ecosystem functions and services. Despite these impressive features, ponds face many threats from a variety of human activities and receive little or no protection under European and national legislation. Consequently, there is an urgent need to protect, consolidate and increase the pond resource in Europe. In order to achieve these objectives, the European Pond Conservation Network (EPCN) was launched 2004 in Geneva. Its aim is to promote the awareness, understanding and conservation of these small water bodies in the European landscape. This volume of “Developments in Hydrobiology” presents a selection of 31 papers presented during EPCN conferences held in 2006 in France (Toulouse) and in 2008 in Spain (Valencia). They represent a diverse collection of themes from across the continent and North Africa and present new and original insights into topics as wide ranging as pond biodiversity; human disturbance; landscape ecology; ecological assessment and monitoring; practical management measures; ecological restoration; hydrology and climate change; invasive species and threatened species.
Author: Darold Batzer
Publisher: Springer
ISBN: 3319249789
Category : Science
Languages : en
Pages : 647
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Book Description
Wetlands are among the world’s most valuable and most threatened habitats, and in these crucially important ecosystems, the invertebrate fauna holds a focal position. Most of the biological diversity in wetlands is found within resident invertebrate assemblages, and those invertebrates are the primary trophic link between lower plants and higher vertebrates (e.g. amphibians, fish, and birds). As such, most scientists, managers, consultants, and students who work in the world’s wetlands should become better informed about the invertebrate components in their habitats of interest. Our book serves to fill this need by assembling the world’s most prominent ecologists working on freshwater wetland invertebrates, and having them provide authoritative perspectives on each the world’s most important freshwater wetland types. The initial chapter of the book provides a primer on freshwater wetland invertebrates, including how they are uniquely adapted for life in wetland environments and how they contribute to important ecological functions in wetland ecosystems. The next 15 chapters deal with invertebrates in the major wetlands across the globe (rock pools, alpine ponds, temperate temporary ponds, Mediterranean temporary ponds, turloughs, peatlands, permanent marshes, Great Lakes marshes, Everglades, springs, beaver ponds, temperate floodplains, neotropical floodplains, created wetlands, waterfowl marshes), each chapter written by groups of prominent scientists intimately knowledgeable about the individual wetland types. Each chapter reviews the relevant literature, provides a synthesis of the most important ecological controls on the resident invertebrate fauna, and highlights important conservation concerns. The final chapter synthesizes the 15 habitat-based chapters, providing a macroscopic perspective on natural variation of invertebrate assemblage structure across the world’s wetlands and a paradigm for understanding how global variation and environmental factors shape wetland invertebrate communities.
Author: D. Dudley Williams
Publisher: Oxford University Press, USA
ISBN: 0198528116
Category : Nature
Languages : en
Pages : 348
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Book Description
'The Biology of Temporary Waters' brings together diverse global literature on pure and applied aspects of temporary waters and their biotas. It examines their roles in both natural and human environments and seeks common evolutionary themes.
Author: Juan A. Blanco
Publisher: BoD – Books on Demand
ISBN: 953512028X
Category : Science
Languages : en
Pages : 644
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Book Description
The term biodiversity has become a mainstream concept that can be found in any newspaper at any given time. Concerns on biodiversity protection are usually linked to species protection and extinction risks for iconic species, such as whales, pandas and so on. However, conserving biodiversity has much deeper implications than preserving a few (although important) species. Biodiversity in ecosystems is tightly linked to ecosystem functions such as biomass production, organic matter decomposition, ecosystem resilience, and others. Many of these ecological processes are also directly implied in services that the humankind obtains from ecosystems. The first part of this book will introduce different concepts and theories important to understand the links between ecosystem function and ecosystem biodiversity. The second part of the book provides a wide range of different studies showcasing the evidence and practical implications of such relationships.
Author: Sara Varandas Martins
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Temporary ponds (TP) comprise a complex ecohydrology and are extremely vulnerable to habitat degradation. These ecosystems contain species rarely found elsewhere but the environments are highly exposed to human and climate change pressures. TP have been recognised as priority habitats for conservation in Europe by the Habitats Directive, and work towards improved knowledge, understanding and conservation has increased since. This thesis focuses on the ecohydrological controls on the cladoceran species and communities in coastal temporary ponds in two geographic regions along a northwest Europe latitudinal gradient: the northwest coast of Ireland and the southwest coast of Portugal. It explores local time-variance in two dune slack ponds at Sheskinmore, Co. Donegal, Ireland, local spatial-variance across 24 ponds at the same site, and regional controls on temporary pond Cladocera ecohydrology at two sites in southwest Portugal (Malhão (MAL) and Vila do Bispo (VB)). The focus of investigation here is the seasonal hydrological balance and dependence of this dynamic on the ecology and biology of the habitats. This research aims to achieve a better understanding of individual, local and regional ecohydrological dynamics of TP"s and characterise the drivers of ecosystem variation within. Results uncover that ponds and slacks of Sheskinmore are highly dependent on rainfall and their vulnerability is confirmed when precipitation levels are not met. Increased variability inter-annually of cladocerans as opposed to intra-annual seasonal variation showed this. Weather changeability is the most important aspect of future climate change but there is a complex interaction between weather variability, local hydroregime and topography of a waterbody, impacting species" temporal and spatial assemblages varyingly. Spatial dynamics of these dune ponds evaluated that within a rather small area, cladoceran composition differs, mainly according to hydrological categories, which are then linked to proximity of each site to the water table. Water chemistry was not so relevant to the spatial patterns in species. At a regional scale, sediment composition and water chemistry were better predictors of differentiation of the cladoceran composition within the Portuguese ponds, rather than geomorphological differentiations between regions. MAL ponds contained higher cladoceran abundance, whereas VB ponds contained higher cladoceran richness. Regionally, cladoceran communities are shaped by a combination of important factors and explanations vary according to the individual characteristics and to the collective groups of ponds. Results corroborate the importance of hydrology, topology and climatic factors as ecological drivers of ecosystem functioning in TP. This work demonstrates the uniqueness and sensitivity of TPs, therefore supporting the need to conserve these habitats.
Author: D. Dudley Williams
Publisher: Springer Science & Business Media
ISBN: 9401160848
Category : Science
Languages : en
Pages : 214
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Book Description
The primary role of this book is to introduce the reader to, and hopefully stimulate interest in, the ecology of temporary aquatic habi tats. The book assumes that the reader will have, already, some gen eral knowledge of ecology but this is not essential. Temporary waters exhibit amplitudes in both physical and chemical parameters which are much greater than those found in most waterbodies. The organisms that live in these types of habitats have, therefore, to be very well adapted to these conditions if they are to survive. Survival depends largely on exceptional physiological tolerance or effective immigration and emigration abilities. Examples of such adaptations are given throughout the book and it is hoped that these will aid the reader in gaining an insight into the structure and function of plant and animal communities of these unusual habi tats. The final chapter suggests field and laboratory projects that should be useful to students in school and university studies.
Author: Lauren C McCarthy
Publisher:
ISBN:
Category :
Languages : en
Pages : 121
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Book Description
The dispersal of individuals among habitat patches is thought to have an important effect on ecological communities as it can influence both population dynamics and community assembly. Though much work on dispersal has been completed, zooplankton offer an interesting opportunity to study dispersal. They can disperse not only among ponds, but they can also disperse within and among ponds through time as their eggs can remain dormant for long periods until environmental conditions initiate their hatching. The dissertation has focused on the role of temporal and spatial dispersal on the assembly of zooplankton communities, an assessment of whether predators weaken the effect of early dispersing zooplankton species on late dispersing zooplankton species through differences in zooplankton hatching phenology, and the effects of environment and space on temporary pond zooplankton communities in the Croatan National Forest, NC. Differences in spatial and temporal dispersal had a weak effect on the number of zooplankton species present. Nonetheless, both spatial and temporal dispersal strongly affected the total abundance and species composition of zooplankton present, but their effects were interdependent. When predation and the effects of zooplankton hatching phenology were considered predators and one zooplankton species that arrived early slowed the growth of the later arriving zooplankton species. Algal resources were not affected by predators, but were affected by the order of arrival of the different zooplankton species. Lastly, the role of environment and space on zooplankton temporary pond communities showed that spatial and environmental factors explained similar amounts of the variation in zooplankton composition in the Croatan National Forest, with environmental factors explaining more of the variation in the spring and summer than in the fall and winter. Together these results indicate that zooplankton composition in pond communities can be affected by interactions between spatial and temporal dispersal, the presence of predators and differences in hatching phenology, as well as by environmental factors such as temperature and spatial factors such as pond size and pond density. Thus, highlighting the importance of dispersal but also its interaction with other abiotic and biotic factors to form zooplankton communities.
Author: Walter John Sadinski
Publisher:
ISBN:
Category : Aquatic animals
Languages : en
Pages : 296
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Book Description
