Seminário: Texas Savannas: A tapestry of grass, wood and people
15/03 às 11:49
O próximo seminário CEF/CEABN: Ecologia, Florestas e Conservação decorrerá na próxima segunda-feira, dia 19 de Março, entre as 12h30m e as 13h30m, no Auditório Florestal do Instituto Superior de Agronomia, com o título: Texas Savannas: A tapestry of grass, wood and people, por Kathleen Kavanagh.
The balance between grasses and woody plants is regulated by complex interactions among climate, atmosphere, soils, herbivory, and fire. Controversies regarding the importance of these factors will be resolved only through the creative integration of small- and large-scale experiments and long-term monitoring. The woody-herbaceous balance has tipped in favor of shrubs and trees with savannas transitioning to shrublands and eventually woodlands. Causes for these ongoing transformations are unclear, but what is clear is that there are important-if poorly understood-consequences for ecosystem processes, biodiversity, and the sustainability of savannas. To address these issues we are launching a Savanna Long Term Research and Education Initiative (SLTREI). Initially, our research is focused on the 100yr old Sonora Research Station and nearby research facilities in Central Texas, USA. Texas has approximately 19million ha of land that can be classified as in transition from savannas to scrublands, and woodlands with analogs to many of the worlds tropical and temperate savanna ecosystems undergoing similar transitions. My talk will highlight some of the fundamental hypotheses being considered along with methodology, and long term monitoring we are initiating. The goal is to leverage similar experimental protocols across the global extent of savanna ecosystems to better comprehend the complex tapestry grasses, wood, and people.