Joana Alho
Universidade de Évora, Biologia, Graduate Student
Esta dissertação tem por objectivo o desenvolvimento de actividades de ecoturismo e de educação ambiental numa zona rural de baixa densidade, em prol da valorização dos seus recursos naturais e culturais, e do património rural. A área... more
Esta dissertação tem por objectivo o desenvolvimento de actividades de ecoturismo e de educação ambiental numa zona rural de baixa densidade, em prol da valorização dos seus recursos naturais e culturais, e do património rural. A área geográfica, Querença, trata-se de um território rico em recursos naturais, culturais e turísticos, apresentando uma diversidade de espécies autóctones privilegiada pela localização entre o Barrocal e a Serra, e um vasto património rural material e imaterial. Esta estratégia de valorização é suportada pela organização de vários programas de actividades de ecoturismo, turismo científico e de educação ambiental, e na concepção e planeamento de uma rota de observação e fotografia de libélulas e libelinhas, num hotspot de Odonata do Barrocal Algarvio, a Paisagem Protegida Local da Fonte da Benémola. O ecoturismo é uma mais-valia socioeconómica, e uma forma de sustentar a conservação da natureza, sendo uma alavanca para o desenvolvimento local de áreas rurais.
Fungi naturally present in olive trees were identified and tested for their antagonistic potential against Colletotrichum acutatum. A total of 14 isolates were identified, 12 belonged to genera Alternaria, Epicoccum, Fusarium,... more
Fungi naturally present in olive trees were identified and tested for their antagonistic potential against Colletotrichum acutatum. A total of 14 isolates were identified, 12 belonged to genera Alternaria, Epicoccum, Fusarium, Aspergillus, Anthrinium, Chaetomium, Diaporthe, Nigrospora, one to family Xylariaceae and one was unclassified. All fungal isolates showed some inhibitory action over the growth of C. acutatum during dual culture growth, however, when agar-diffusible tests were performed only five fungal isolates caused C. acutatum growth inhibition: Alternaria sp. isolate 2 (26.8%), the fungus from Xylariaceae family (14.3%), Alternaria sp. isolate 1 (10.7%); Diaporthe sp. (10.7%), Nigrospora oryzae (3.5%). Volatile substances produced by these isolates were identified through gas-chromatography techniques, as phenylethyl alcohol, 4-methylquinazoline, benzothiazole, benzyl alcohol, lilial, galaxolide, among others. These inhibitory volatiles could play a significant role in r...
Research Interests:
Abstract Latent class models have been widely used to evaluate the performanceof veterinary and human diagnostic tests, in the absence of a gold standard. In thiswork, we explore Bayesian latent class models, with and without... more
Abstract Latent class models have been widely used to evaluate the performanceof veterinary and human diagnostic tests, in the absence of a gold standard. In thiswork, we explore Bayesian latent class models, with and without restrictions, in differentpopulations. ...
Fungi naturally present in olive trees were identified and tested for their antagonistic potential against Colletotrichum acutatum. A total of 14 isolates were identified, 12 belonged to genera Alternaria, Epicoccum, Fusarium,... more
Fungi naturally present in olive trees were identified and tested for their antagonistic potential against Colletotrichum acutatum. A total of 14 isolates were identified, 12 belonged to genera Alternaria, Epicoccum, Fusarium, Aspergillus, Anthrinium, Chaetomium, Diaporthe, Nigrospora, one to family Xylariaceae and one was unclassified. All fungal isolates showed some inhibitory action over the growth of C. acutatum during dual culture growth, however, when agar-diffusible tests were performed only five fungal isolates caused C. acutatum growth inhibition: Alternaria sp. isolate 2 (26.8%), the fungus from Xylariaceae family (14.3%), Alternaria sp. isolate 1 (10.7%); Diaporthe sp. (10.7%), Nigrospora oryzae (3.5%). Volatile substances produced by these isolates were identified through gas-chromatography techniques, as phenylethyl alcohol, 4-methylquinazoline, benzothiazole, benzyl alcohol, lilial, galaxolide, among others. These inhibitory volatiles could play a significant role in reduction of C. acutatum expansion in olive and their study as potential biocontrol agents should be further explored.