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Food webs hold a central place in ecology. They describe which organisms feed on which others in natural habitats. This book describes recently discovered empirical regularities in real food webs: it proposes a novel theory unifying many of these regularities, as well as extensive empirical data. After a general introduction, reviewing the empirical and theoretical discoveries about food webs, the second portion of the book shows that community food webs obey several striking phenomenological regularities. Some of these unify, regardless of habitat. Others differentiate, showing that habitat significantly influences structure. The third portion of the book presents a theoretical analysis of ...
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First book to research the intriguing backstory of the real James Bond, a Philadelphia ornithologist An adventure story for armchair travelers, fans of 007, and birdwatchers Discover how naturalists named new species after Bond, leveraging his fame to build awareness
This text is a history of the world's oldest global conservation body - the World Conservation Union, established in 1948 as a forum for governments, non-governmental organizations and individual conservationists. The author draws on unpublished archives to reveal the often turbulent story of the IUCN and its achievements in, and influence on, conservation and environmental policy worldwide - establishing national parks and protected areas and defending threatened species.
Richly illustrated, backed-up by an abundance of maps and bibliographic references, this entirely revised Atlas presents the current geography, biology, mode of introduction, distinct taxonomic characteristics of 188 exotic fishes that have reached the Mediterranean since the piercing of the Suez Canal. A majority of these species (107) are new to the 2nd edition, having reached the Basin in the last twenty years, from both the Indo-Pacific region and the tropical Atlantic. The reader will find as well a description of 88 additional taxa that are often (mistakenly) listed as exotic in the scientific literature.
Discusses the history of ecology and biodiversity conservation, stressing the importance of maintaining biologically diverse ecosystems and helping prevent unnatural extinctions of plant and animal species.
This monograph presents the current views, challenges and future needs of educators from a global online exchange where educators and researchers discuss the 21st century skills needed by students and teachers. The three editors, who participated in the global online research discussion group, also assumed the role of authors to summarise, analyse and celebrate the myriad of ideas generated in a topic thread that had well over a thousand responses from 26 countries. Through Comparative Analysis they then compared the posters’ ideas to some current big thinkers in education. This text promotes teachers’ voices from diverse disciplines and sectors who are united in their desire for purposeful and radical change in how teaching is carried out and what is taught. The text advocates shifting power away from government control and standardisation towards empowering teachers to guide and further develop the unique talents of diverse individuals.
Full text e-book available as part of the Elsevier ScienceDirect Earth and Planetary Sciences subject collection.