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Effects Of Agricultural Management And Manipulated Plant Species Composition Of Permanent Grassland On Productivity And Sward Structure
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Book Synopsis Effects of Agricultural Management and Manipulated Plant Species Composition of Permanent Grassland on Productivity and Sward Structure by : Ute Petersen
Download or read book Effects of Agricultural Management and Manipulated Plant Species Composition of Permanent Grassland on Productivity and Sward Structure written by Ute Petersen and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Factors Affecting the Productivity of Permanent Grassland by : T. J. Forbes
Download or read book Factors Affecting the Productivity of Permanent Grassland written by T. J. Forbes and published by . This book was released on 1980 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Zealand Journal of Agricultural Research by :
Download or read book New Zealand Journal of Agricultural Research written by and published by . This book was released on 1986 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Effects of Conservation Practices on Grazing Lands by :
Download or read book Environmental Effects of Conservation Practices on Grazing Lands written by and published by . This book was released on 2006 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Grazing in Future Multi-scapes: From Thoughtscapes to Landscapes, Creating Health from the Ground Up by : Pablo Gregorini
Download or read book Grazing in Future Multi-scapes: From Thoughtscapes to Landscapes, Creating Health from the Ground Up written by Pablo Gregorini and published by Frontiers Media SA. This book was released on 2022-09-27 with total page 649 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Research Topic is hosted in partnership with the "Grazing in Future Multi-Scapes" international workshop. The workshop will be held online, 30th May - 5th June 2021. Throughout different landscapes of the world, “grazing” herbivores fulfill essential roles in ecology, agriculture, economies and cultures including: families, farms, and communities. Not only do livestock provide food and wealth, they also deliver ecosystem services through the roles they play in environmental composition, structure and dynamics. Grazing, as a descriptive adjective, locates herbivores within a spatial and temporal pastoral context where they naturally graze or are grazed by farmers, ranchers, shepherds etc. In many cases, however, pastoralism with the single objective of maximizing animal production and/or profit has transformed landscapes, diminishing biodiversity, reducing water and air quality, accelerating loss of soil and plant biomass, and displacing indigenous animals and people. These degenerative landscape transformations have jeopardized present and future ecosystem and societal services, breaking the natural integration of land, water, air, health, society and culture. Land-users, policy makers and societies are calling for alternative approaches to pastoral systems; a call for diversified-adaptive and integrative agro-ecological and food-pastoral-systems designs that operate across multiple scales and ‘scapes’ (e.g. thought-, social-, land-, food-, health-, wild-scapes), simultaneously. There needs to be a paradigm shift in pastoral production systems and how grazing herbivores are managed –grazed- within them, derived initially from a change in perception of how they provide wealth. The thoughtscapes will include paradigm shifts where grazers move away from the actual archetype of pastoralism, future landscapes are re-imagined, and regenerative and sustainable management paradigms are put in place to achieve these visions. From this will come a change in collective thinking of how communities and cultures (socialscapes) perceive their relationships with pastoral lands. The landscapes are the biotic and abiotic four-dimensional domains or environments in need of nurture. Landscapes are the tables where humans and herbivores gain their nourishment, i.e. foodscapes. Foodscapes and dietary perceptions, dictate actions and reactions that are changing as developed countries grapple with diseases related to obesity, and people starve in developing countries. Societies are demanding healthscapes and nutraceutical foodscapes, and paradoxically, some are moving away from animal products. While indigenous species of animals, including humans (wildscapes), have been displaced from many of their lands by monotonic pastoralism, multifunctional pastoral systems can be designed in view of dynamic multi-scapes of the future. The purpose of this Research Topic is to influence future mental and practical models of pastoralism in continually evolving multi-scapes. We seek a collection of papers that will cultivate such a shift in thinking towards future models of sustainable multipurpose pastoralism. The contributions will be synthesized to establish how multifunctional pastoral systems can be re-imagined and then designed in view of the integrative dynamics of sustainable future multi-scapes.
Book Synopsis Causes and Consequences of Grass Versus Forb Years in California Rangelands by : Lauren Margaret Hallett
Download or read book Causes and Consequences of Grass Versus Forb Years in California Rangelands written by Lauren Margaret Hallett and published by . This book was released on 2015 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global circulation models consistently forecast an increase in the frequency of extreme events such as severe storms and droughts. These changes will alter species interactions and ecosystem functions shaped by precipitation, such as productivity. Ecosystem management will need to anticipate, and where possible, mitigate the effects of increased climate variability in order to maintain ecosystem services and biodiversity. This is a pressing issue for California rangelands, which host a high percentage of California's endemic plants and support a large ranching industry that depends on reliable forage production. My dissertation uses observational and experimental approaches to understand the implications of increased precipitation variability for the stability of forage production (i.e. aboveground productivity) and the persistence of rare species in California rangelands. Chapter 1 explores how species interactions affect the stability of aboveground productivity and whether these patterns change along precipitation gradients. I compiled and analyzed nine long-term datasets of plant species composition and aboveground productivity from grassland sites across the United States. I found that productivity in mesic grasslands was stabilized by species richness, whereas productivity in climatically variable grasslands was stabilized by species asynchrony over time. The latter pattern was exemplified by California rangelands, which experienced the most variable precipitation as well as exhibited the most species asynchrony. Chapters 2 and 3 experimentally test the relationship between precipitation variability and species asynchrony in California rangelands and its implications for the stability of cover and aboveground productivity over time. In Chapter 2, I used rainout shelters and irrigation to experimentally create dry and wet conditions, which I replicated across areas with both low and moderate grazing histories. In moderately grazed areas, my rainfall treatments generated a classic pattern of "grass years" in wet conditions and "forb years" in dry. This pattern helped to stabilize cover across rainfall treatments and is a likely reason for the relationship between precipitation variability and species asynchrony that I observed in Chapter 1. In low grazed areas, however, my treatments essentially generated "grass years" in wet conditions and "no-grass years" in dry; forb cover was both low and unresponsive to rainfall in these areas. This suggests that moderate grazing may be an important management tool to maintain the functional responsiveness of California rangelands to precipitation variability. Chapter 3 tests whether competitive and functional differences between grasses and forbs affect the degree to which asynchrony stabilizes total biomass production. Within wet and dry plots I manipulated species interactions to create monocultures of Avena barbata (the most abundant grass), Erodium botrys (the most abundant forb) and a mixture of Avena and Erodium. I found that Avena exerted a stronger competitive effect on Erodium under wet conditions relative to dry, which should help stabilize community productivity. However, this effect was overwhelmed by highly unequal production capacity between the two species; Erodium productivity was much lower than Avena and, consequently, tradeoffs between the species did not increase the stability of the mixture relative to either monoculture. Chapter 4 further investigates tradeoffs between grass and forb years, but in the context of species population dynamics in a ecosystem of conservation concern. Serpentine grassland patches in California host a unique, predominately native flora that is threatened by non-native grass invasion. I focused on a serpentine site that over the past 32 years has exhibited high fluctuations in native forb abundances, and has experienced a series of invasions and subsequent recessions by a non-native annual grass, Bromus hordeaceus. Effective native species conservation and invasive species management require an understanding of what drives such variation in species abundances. I applied a population model to the six most-abundant species at the site - four native annual forbs, a native annual grass and Bromus - to test factors affecting their population size and stability. I found that species could have large population sizes (measured as mean abundance over time) for different reasons - three species had high intrinsic growth rates, whereas the other three, including Bromus and the native grass, had minimal self-limitation. Population stability was highly affected by these differences: species with both low intrinsic growth rates and minimal self-limitation had less stable populations and were more sensitive to rainfall. These findings suggest a framework to describe population stability and to identify which species are likely to be sensitive to environmental change.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1976 with total page 1732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Zealand Journal of Agricultural Research by :
Download or read book New Zealand Journal of Agricultural Research written by and published by . This book was released on 1986 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of changes in fertilizer use on the composition and productivity of permanent grassland in relation to agricultural production and floristic diversity by : R J. Wilkins
Download or read book Effects of changes in fertilizer use on the composition and productivity of permanent grassland in relation to agricultural production and floristic diversity written by R J. Wilkins and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Grassland Ecophysiology and Grazing Ecology by : Gilles Lemaire
Download or read book Grassland Ecophysiology and Grazing Ecology written by Gilles Lemaire and published by CABI. This book was released on 2000-11-03 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text presents edited key papers from the International Symposium on Grassland Ecophyisiology and Grazing Ecology held in Curitiba, Brazil in August 1999. It considers how plants within grasslands respond to and are adapted to grazing animals.
Book Synopsis Biological & Agricultural Index by :
Download or read book Biological & Agricultural Index written by and published by . This book was released on 1997 with total page 2984 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1992-11 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Forage Plant Ecophysiology by : Cory Matthew
Download or read book Forage Plant Ecophysiology written by Cory Matthew and published by MDPI. This book was released on 2018-03-16 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Forage Plant Ecophysiology" that was published in Agriculture
Book Synopsis Landscape Ecology by : Francoise Burel
Download or read book Landscape Ecology written by Francoise Burel and published by CRC Press. This book was released on 2003-01-05 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part I: Introduction: Definition of a Discipline: Emergence of Landscape Ecology in the History of Ecology; Recognition of Heterogeneity in Ecological Systems; Taking Human Activities into Account in Ecological Systems; Explicit Accounting for Space and Time; Landscape Ecology is based on Scientific Theories Linked to Ecology and Related Discipline
Download or read book Agrindex written by and published by . This book was released on 1995 with total page 954 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Livestock's Long Shadow by : Henning Steinfeld
Download or read book Livestock's Long Shadow written by Henning Steinfeld and published by Food & Agriculture Org.. This book was released on 2006 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The assessment builds on the work of the Livestock, Environment and Development (LEAD) Initiative"--Pref.
Book Synopsis Bibliography of Agriculture with Subject Index by :
Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 2000 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: