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Allelopathy is an ecological phenomenon by which plants release organic chemicals (allelochemicals) into the environment influencing the growth and survival of other organisms. In this book, leading scientists in the field synthesize latest developments in allelopathy research with a special emphasis on its application in sustainable agriculture. The following topics are highlighted: Ecological implications, such as the role of allelopathy during the invasion of alien plant species; regional experiences with the application of allelopathy in agricultural systems and pest management; the use of microscopy for modeling allelopathy; allelopathy and abiotic stress tolerance; host allelopathy and arbuscular mycorrhizal fungi; allelopathic interaction with plant nutrition; and the molecular mechanisms of allelopathy. This book is an invaluable source of information for scientists, teachers and advanced students in the fields of plant physiology, agriculture, ecology, environmental sciences, and molecular biology.
Myrmarker har en stor roll i regleringen av den globala kolbalansen och koncentrationerna av koldioxid och metan i atmosfären, vilket gör dem till speciellt viktiga ekosystem ur ett klimatförandringsperspektiv. Förändringar av myrmarker genom naturlig utveckling eller antropogen påverkan kan därför få långtgående störningar av myrars klimatreglerande funktion. Mikroorganismer har en avgörande roll i biogeokemiska processer genom att t ex bryta ned organisk material i mark och därmed styra kolets kretslopp. För att förstå hur myrsystemen reagerar på störningar är det därför väsentligt att veta hur mikroorganismsamhällena reagerar genom förändringar i sammansättning ...
The book provides an overview of the floods and major hydrological changes that occurred in the medieval Hungarian kingdom (covering the majority of the Carpathian Basin) between 1000 and 1500 AD. The analysis was based on contemporary documentary evidence presented for the first time and the results of archaeological and scientific investigations. Beyond the evidence on individual flood events, the book includes a comprehensive overview of short-, medium-, and long-term changes detected in a hydrologically sensitive environment during the transition period between the Medieval Warm Period and the Little Ice Age. It also discusses the possible causes (including climate and human intervention) and the consequences for the physical and human environment, namely the related hydro-morphological changes, short- and long-term social response, and human perception issues.
LE RÉVEIL ÉCOLOGIQUE, C'EST MAINTENANT ! Nous n'avons plus le choix ! Aujourd'hui, les fous ne sont plus ceux qui annoncent l'apocalypse, mais ceux qui refusent de voir qu'elle a déjà commencé. En 2100, si nous ne changeons rien, notre planète sera devenue inhabitable. Face à l'éco-anxiété et à la résignation, des solutions existent. 10 révolutions simples et efficaces que Thomas Guénolé nous propose de mettre en place dès maintenant : transports écologiques, fin du tout-jetable, " plan Marshall " pour l'écologie... L'auteur propose un nouveau modèle de société pour vivre avec les grands changements climatiques à venir dans les dix ans. Oui, c'est urgent. Oui, c'est possible. Oui, c'est réalisable. Ce livre peut nous sauver ! La première ordonnance écologique.
The first book-length ethnographic study on music and Ifá divination in Cuba and Nigeria. Hailing from Cuba, Nigeria, and various sites across Latin America and the Caribbean, Ifá missionary-practitioners are transforming the landscape of Ifá divination and deity (òrìṣà/oricha) worship through transatlantic travel and reconnection. In Cuba, where Ifá and Santería emerged as an interrelated, Yorùbá-inspired ritual complex, worshippers are driven to "African traditionalism" by its promise of efficacy: they find Yorùbá approaches more powerful, potent, and efficacious. In the first book-length study on music and Ifá, Ruthie Meadows draws on extensive, multisited fieldwork in Cu...
Biological soil crusts (biocrusts) are widely distributed throughout the world, and cover approximately 12% of the terrestrial surface. Biocrusts are composed of cyanobacteria, algae, lichens, mosses, and a great diversity of other microorganisms, which bind soil particles together to form a layer of biological-soil matrix on the soil surface typically of several millimetres thickness. They are important sites of regional and global microbial diversity and perform multiple ecological functions (multifunctionality). During the evolution of terrestrial life on earth, biocrusts are regarded as the main colonising photosynthetic organisms before the advent of vascular vegetation. They not only r...