A palinologia da Lagoa do Saloio (Nazaré, Portugal) e a evolução holocénica da região da Mata Nacional do Valado

Translated title of the contribution: The Holocene evolution of Saloio lakelet (Nazare, Portugal)

Sandra Domingues Gomes

Research output: ThesisMaster's Thesis

Abstract

Considering the geo-morphological perspective, humid areas like lagoons, turfs, swamps, moors and other lacustrine ecosystems are characterized by their dynamic and complexity; therefore, highly vulnerable before fortuitous and/or antropic impacts. Saloio lakelet, which is the area under research, is located in Nazaré municipality and holds a curriculum of ecological changes, having happened throughout the Holocene. This evolutionary “history” still resides on the lagoon sediments, whose analysis and further interpretation are irrefutable testimonies of the natural environmental changes befallen both at local and regional levels. Due to their believed impact upon the above referred area, recently emerged anthropic changes seem to prevail against a natural process. Applying to different subjects enables us to dive into the past and rebuild all the events conducive to the major ecological changes in the core of landscape; however, throughout the present research, and given its utility and reliability on deciphering the ancient territories (Riera Mora, 2006), emphasis will be put on the importance of palinology. This is one of the most important methods used in the reconstruction of the flora, vegetation and other surroundings of the past (Faegri e Iversen, 1989).Thus, the work now being considered consists of a research on the palynologycal analysis of pollen and non-pollen bearer microfossils retained in a sedimentary line of mud at the bed of Saloio lakelet (Nazaré). Having departed from the eco- physiographical characterization of the region and of the current context of the lagoon, to proceed through the description of the various aspects of the palynologycal methodology that led to the conception of pollen diagrams, (both regionally and locally),it was, finally, accomplished the description of the diagrams themselves and their inherent discussion, where both the recorded patterns and the inferred ecological processes were compared to others come out within “similar” contexts, regarding the lacustrine ecosystems and the surrounding regions. Given its interest and the regional involving nature of the site (featuring specific lacustrine basins, owning much paleoecological potential), it is intended this research, still in its outset, to progress and advance to a more accurate project of temporal conclusion, which, by acquiring pale ecological stereoscopy, conduces towards a more solid understanding of the ecological history of the region.
https://repositorio.utad.pt/handle/10348/97
Translated title of the contributionThe Holocene evolution of Saloio lakelet (Nazare, Portugal)
Original languagePortuguese
QualificationMaster of Science
Supervisors/Advisors
  • Queiroz, Paula, Supervisor, External person
  • Mateus, José , Supervisor, External person
Award date2 Nov 2007
Publication statusUnpublished - 2007

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