Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/5316
Título: Avaliação do impacto dos factores climáticos na qualidade do habitat do Sisão (Tetrax tetrax) através de deteção remota
Autor: Martins, Ana Rita Mendes
Orientador: Silva, João Paulo Campbell Alves
Moreira, Francisco Manuel Ribeiro Ferraria
Palavras-chave: little bustard
Tetrax tetrax
breeding season
NDVI
rainfall
soil productivity
climate change
Data de Defesa: 2012
Editora: ISA/UTL
Citação: Martins, A.R.M. - Avaliação do impacto dos factores climáticos na qualidade do habitat do Sisão (Tetrax tetrax) através de deteção remota. Lisboa: ISA, 2012, 48 p.
Resumo: The Little Bustard Tetrax tetrax is a bird adapted to agricultural systems, considered endangered in the Iberian Peninsula, Europe region particularly vulnerable to climate change. During the breeding season, Little Bustard shows preference for fallow land and pastures, feeding mainly of vegetable matter. The NDVI, extracted from satellite images, can be interpreted as an index of vegetation greenness and therefore with a high potential as a predictive variable of the distribution and abundance of the Little Bustard. The objective of this study aims to understand how climate influences the NDVI and how NDVI relates to the Little Bustard abundance in the period coinciding with the start of the breeding season. Using AVHRR images within a time series of 25 years (1981-2006), it was analyzed at the scale of Alentejo the effect of accumulated rainfall and the land use in NDVI values. According to statistical modeling techniques for both variables, significantly and positively influence the NDVI values. It was found, on the other hand, a negative relationship between the abundance of Little Bustard and NDVI. It is believed that the areas of greatest abundance (with lower NDVI) correspond to locations where suitable habitat exists for Little Bustard breeding, which, with the climate change scenarios, will be more vulnerable
Descrição: Mestrado em Engenharia do Ambiente - Instituto Superior de Agronomia
URI: http://hdl.handle.net/10400.5/5316
Aparece nas colecções:BISA - Dissertações de Mestrado / Master Thesis

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