Modelling the effects of climate chante on weed population dynamics
- Autores: David García de León Hernández
- Directores de la Tesis: José Luis González Andújar (dir. tes.), Mauricio Lima Arce (codir. tes.)
- Lectura: En la Universidad de Córdoba (ESP) ( España ) en 2014
- Idioma: español
- Tribunal Calificador de la Tesis: César Fernández Quintanilla (presid.), Antoni J. Pujadas Salvà (secret.), Isabel María Da Silva Monteiro Miranda Calha (voc.)
- Materias:
- Enlaces
- Tesis en acceso abierto en: Helvia
- Resumen
As the human population continues to increase –it will have surpassed 9 billion people by 2050- food supply must rise in order to sustain people. Climate change represents a threat in the provision of sufficient, secure and nutritious nourishment for everyone. Possible consequences of climate change include a reduction in global agro-ecosystem production, with Spain as one of the most affected countries in Europe. Accordingly, little is known about the possible effects on weed populations, their relationships to the crops and the impact on human health (e.g., allergies). Population dynamics is an established theory focused on the understanding of population changes derived from the endogenous processes and exogenous factors that regulate population fluctuations. In this thesis, population theory is used as a tool to understand the effects of climate change on weeds. Below, three studies are presented which examine the interaction between climate variables and weed population dynamics. The first study was performed in a cereal system in Central Spain and focuses on endogenous and exogenous factors that affect the temporal fluctuations of seven weed types with economic relevance. The second study, developed with a database created in 1843 in the Southern United Kingdom, assesses the effect of climate and management factors on species coexistence in a weed community. The third study used data from a locality in Southern Spain and attempted to explain pollen fluctuations in grasses, project its future evolution and determine the possible consequences for allergies. The content developed in this doctoral thesis represents an original approach to studying the effects of climate change on weeds, with innovative concepts for Weed Science. This thesis contributes to understanding the possible effects of climate change on weed population dynamics and helps to answer the question of how, and to what...
