Kategoria BISAC: Science >> Life Sciences - Biological Diversity

A fascinating work that provides a wealth of information on one of the world's most biodiverse ecosystems. This is the result of investigations by almost 30 groups of researchers from various disciplines. They performed ecosystem analyses following two gradients: an altitudinal gradient and a gradient of land use intensity and ecosystem regeneration following human use. Based on these analyses, this volume discusses these findings in a huge variety of subject areas.

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...

A series of original papers and reviews dealing with the peculiarities of island insects and their conservation in many parts of the world. Contributions to this special issue of Journal of Insect Conservation range from biogeographical analyses and ecological features of island insects and their evolution to the variety of concerns for their wellbeing, and practical conservation through a variety of, sometimes novel, approaches. They provide a valuable and up-to-date resource for entomologists and conservation practitioners.

In an age of increasing environmental problems, ecology has had to grow up fast from a discipline dealing with relatively simple interactions between species to one that tries to explain changes in global patterns of diversity and richness. The issues are complex. Every species may seem to have its own unique role, but if that is true, then why are there hundreds of species of plankton in an ecosystem with only a handful of niches? The tropics have a high biodiversity, but does anybody know why? And how can a single introduced tree species wreak havoc in Hawaii s rainforests, when it is...

Part I provides a basic background in population and community modeling. It introduces...

Band 21 der Susswasserflora von Mitteleuropa" beschreibt die aquatischen Pilze. Der vorliegende Teil 21/1 behandelt die Susswasserflechten (symbiotische Assoziationen von Pilzen mit Grunalgen oder Cyanobakterien), die man in fast allen Fliessgewassern mit sauberem Wasser und steinigem Bett findet. Die Susswasserflechten-Flora hat ein grosses Potential als Bioindikator fur Sedimenteintrag, Stabilitat des Gewasserbetts, Konstanz der Uberflutung und des ph-Wertes.

Mit weniger als 100 Arten sind die Susswasserflechten eine relativ kleine und systematisch sehr heterogene Gruppe von...

Die Darstellung ist inhaltlich und in ihrem Aufbau darauf ausgerichtet, die rechtlichen Vorgaben des Umweltschadensgesetzes hinsichtlich der Haftung bei Biodiversitatsschaden in einen vollzugstauglichen Leitfaden zu ubertragen. Im Mittelpunkt steht die Konkretisierung und praktische Handhabung des Umweltschadensbegriffs. Ausgehend von den rechtlichen Rahmenbedingungen fur eine Haftung bei Biodiversitatsschaden und der normativen Bestimmung der sogenannten Erheblichkeitsschwelle, erfolgt die vollstandige Auflistung der relevanten Schutzguter und fuhrt schliesslich zu einer standardisierten,...

Animals are a major link between the water column (pelagic) and the bottom (benthic) habitats in most shallow systems. This coupling is dominated by active processes such as suspension-feeding in which the organism actively uses energy to pump water that is then filtered to remove suspended particles that are consumed while undigested remains are deposited on the bottom. As a result of this feeding on and metabolism of particles, the animals excrete dissolved inorganic and organic waste back into the water column, and thus, become major components in the cycling and feedback of essential...