4 documents found, page 1 of 1
Multiple factors associated with forest decline in the context of control measu...
Pimentel, Carla S.; Pires, David; Campôa, João; Branco, Jordana; Marques, Raquel; Mota, Manuel; Calvão, TeresaForest decline is a complex phenomenon; however, there is often a tendency to oversimplify by attributing it to a single cause, neglecting the interaction of multiple factors. Ever since the detection of the pinewood nematode (PWN), Bursaphelenchus xylophilus, in Portugal (and in Europe) over two decades ago, pine wilt cases in the country have been primarily attributed to this pathogen, leading authorities to ...
Population dynamics of Bursaphelenchus xylophilus associated with pine forest d...
Pires, David; Campôa, João; Branco, Jordana; Miranda, Isabel; Calvão, Teresa; Mota, Manuel; Pimentel, CarlaThe pinewood nematode (PWN), Bursaphelenchus xylophilus, is a quarantine organism in the European Union and the causal agent of pine wilt disease (PWD), a serious threat to pine forests worldwide, leading to rapid decline and death. In Europe, this invasive pest was first reported in Portugal in 1999, on Pinus pinaster. Due to its economic importance and worldwide distribution, an enormous effort has been devot...
Ecogeographical determinants of investment in chemical defences in pines
Pimentel, Carla S.; Gonçalves, Elsa V.; Campôa, João; Calvão, Teresa; Ayres, Matthew P.; Correia, Otília; Máguas, C.Understanding the ecological and environmental correlates of tree defences has value for understanding forest susceptibility to pests and pathogens in a time of global change. In the present work, we assessed how life-history attributes and biogeography are related to chemical defences of pine trees in Palaearctic and Nearctic forests. We studied adult trees of ten pine species in forests of Portugal and Easter...
Arthropod diversity sheltered in Thaumetopoea pityocampa (Lepidoptera: Notodont...
Branco, Manuela; Santos, Márcia; Calvão, Teresa; Telfer, Gillian; Paiva, Maria Rosa1. In pine ecosystems, the role of the larval nests of the Mediterranean defoliator Thaumetopoea pityocampa as shelter of other arthropods, was studied for the first time. In Portugal, Pinus stands which differed in understorey plant diversity and level of attack by T. pityocampa were compared. 2. The arthropod fauna found sheltering inside the nests consisted of 60 species, representing 12 foraging types. Both...