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Leaf Defence
Leaves are among the most abundant organs on earth and are a defining feature of most terrestrial ecosystems. However, a leaf is also a potential meal for a hungry animal and the question therefore arises, why does so much foliage survive in nature? What mechanisms protect leaves so that, on a global scale, only a relatively small proportion of living leaf material is consumed? Leaf survival is in large part due to two processes: firstly, leaf-eating organisms fall prey to predators (top-down pressure on the herbivore); secondly, leaves defend themselves (bottom-up pressure on the herbivore). Remarkably, these two types of event are often linked; they are controlled and coordinated by plants...
Plant Sensing and Communication
Research is showing that plants are in constant and lively discourse--they communicate, signaling to remote organs within an individual, eavesdropping on neighboring individuals, and exchanging information with other organisms ranging from other plants to microbes to animals. Plants lack central nervous systems, and the mechanisms coordinating plant sensing, behavior, and communication are quite different from the systems that accomplish similar tasks in animals. But they are no less impressive from an evolutionary perspective. In "Plant Communication, "Karban puts an ear to the ground to reveal the world of plant communication and information sensing. He reveals their sensory capabilities, the learning capacity of plants, sensory signaling and communication, the different responses to pollinators and predators, and the mechanisms that undergird this impressive behavioral repertoire. The book shows that plants are hardly the inanimate organisms limited by their stationary existence."
Official Register
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Pale
“Some things just don’t keep well inside this house ...” The summer of 1966 burned hot across America but nowhere hotter than the cotton fields of Mississippi. Finding herself in a precarious position as a black woman living alone, Bernice accepts her brother Floyd’s invitation to join him as a servant for a white family and she enters the web of hostility and deception that is the Kern plantation household. The secrets of the house are plentiful yet the silence that has encompassed it for so many years suddenly breaks with the arrival of the harvest and the appearance of Jesse and Fletcher to the plantation as cotton pickers. These two brothers, the sons of the house servant Silva, ...
Frontline Farmers
Who grows the food we eat? How important is it that family farms are viable in Canada today and in the future? How do viable family farms help determine the safety, diversity and sustainability of Canada’s food systems? Why is this important to those of us who do not farm? Frontline Farmers introduces readers to the National Farmers Union (NFU). For over fifty years, the NFU has been on the frontlines of our food system. From fighting against transnational corporations that seek to control our food system by imposing genetically modified organisms into our food, to protecting seeds, maintaining orderly marketing, saving the prison farms, keeping the land in the hands of family farmers, far...
Plant Behaviour and Intelligence
This book provides a convincing argument for the view that whole cells and whole plants growing in competitive wild conditions show aspects of plant behaviour that can be accurately described as 'intelligent'. Trewavas argues that behaviour, like intelligence, must be assessed within the constraints of the anatomical and physiological framework of the organism in question. The fact that plants do not have centralized nervous systems for example, does not exclude intelligent behaviour. Outside the human dimension, culture is thought largely absent and fitness is the biological property of value. Thus, solving environmental problems that threaten to reduce fitness is another way of viewing intelligent behaviour and has a similar meaning to adaptively variable behaviour. The capacity to solve these problems might be considered to vary in different organisms, but variation does not mean absence. By extending these ideas into a book that allows a critical and amplified discussion, the author hopes to raise an awareness of the concept of purposive behaviour in plants.
