Marina Xenophontos

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Environmental factors are known to influence strongly the accumulation of secondary metabolites in plant tissues. In a previous paper, we studied the contents of (pseudo)hypericin and its immediate precursors in wild populations of various HYPERICUM species on the island of Crete, Greece, in dependence on their developmental stage. In this study, we(More)
The contents of (pseudo)hypericin and their immediate precursors were studied in wild populations of various Hypericum species on the island of Crete, Greece. Therefore, the aerial parts of wild grown H. perforatum, H. triquentrifolium, H. empetrifolium and H. perfoliatum shoots were collected throughout the island and the quantitative variations in(More)
Many populations of European migrant bird species are declining and this may be driven by survival rates; however, there are few studies that can estimate true survival rates. Cyprus wheatears Oenanthe cypriaca are an endemic migrant that winter in East Africa: populations are probably not declining but are annually variable. We recorded territory(More)
Population dynamics of annually breeding bird species depend crucially on productivity, and so this variation can help us understand the causes of declines in migrant birds. We investigated variation in annual productivity 2010–2012 in the Cyprus Wheatear Oenanthe cypriaca, a small endemic migrant passerine at the National Forest Park (NFP) of Troodos.(More)
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