Browsing Natural and Agricultural Sciences by UP Author "Paap, Trudy"

Browsing Natural and Agricultural Sciences by UP Author "Paap, Trudy"

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  • Adaptive variation for growth and resistance to a novel pathogen along climatic gradients in a foundation tree 
    Ahrens, Collin W.; Mazanec, Richard A.; Paap, Trudy; Ruthrof, Katinka X.; Challis, Anthea; Hardy, Giles E. St. J.; Byrne, Margaret; Tissue, David T.; Rymer, Paul D. (Wiley Open Access, 2019-07)
    Natural ecosystems are under pressure from increasing abiotic and biotic stressors, including climate change and novel pathogens, which are putting species at risk of local extinction, and altering community structure, ...
  • Anthropogenic disturbance impacts mycorrhizal communities and abiotic soil properties : implications for an endemic forest disease 
    Sapsford, Sarah J.; Paap, Trudy; Hardy, Giles E. St. J.; Burgess, Treena I. (MDPI, 2021-01-29)
    In forest ecosystems, habitat fragmentation negatively impacts stand structure and biodiversity; the resulting fragmented patches of forest have distinct, disturbed edge habitats that experience different environmental ...
  • Anthropogenic disturbance impacts stand structure and susceptibility of an iconic tree species to an endemic canker pathogen 
    Paap, Trudy; Burgess, Treena I.; Rolo, Victor; Steel, Emma; Hardy, Giles E. St. J. (Elsevier, 2018-10)
    Forest ecosystems characterised by higher tree species diversity have been linked to a reduced susceptibility to pathogens. Conversely, endemic pathogens contribute to forest ecosystem dynamics and process. In the face of ...
  • Anthropogenic disturbances and the dmergence of native diseases : a threat to forest health 
    Burgess, Treena, I.; Oliva, Jonas; Sapsford, Sarah J.; Sakalidis, Monique L.; Balocchi, Felipe; Paap, Trudy (Springer, 2022-06)
    PURPOSE OF REVIEW : Human-caused global change is fundamentally altering natural forest ecosystems. More trees are exhibiting a wide range of symptoms indicative of poor vigour, particularly stressed species at the edge ...
  • An assessment of the potential economic impacts of the invasive polyphagous shot hole borer (Coleoptera: Curculionidae) in South Africa 
    De Wit, M.P.; Crookes, D.J.; Blignaut, J.N.; De Beer, Z. Wilhelm; Paap, Trudy; Roets, Francois; Van der Merwe, Cassandre; Van Wilgen, Brian W.; Richardson, David M. (Oxford University Press, 2022-08)
    Studies addressing the economic impacts of invasive alien species are biased towards ex-post assessments of the costs and benefits of control options, but ex-ante assessments are also required to deal with potentially ...
  • Botanical gardens as key resources and hazards for biosecurity 
    Wondafrash, Mesfin; Wingfield, Michael J.; Wilson, John R.U.; Hurley, Brett Phillip; Slippers, Bernard; Paap, Trudy (Springer, 2021-06)
    Biodiversity and economic losses resulting from invasive plant pests and pathogens are increasing globally. For these impacts and threats to be managed effectively, appropriate methods of surveillance, detection and ...
  • Botanical gardens provide valuable baseline Phytophthora diversity data 
    Hulbert, J.M. (Joey); Paap, Trudy; Burgess, Treena I.; Roets, Francois; Wingfield, Michael J. (Elsevier, 2019-12)
    Phytophthora species are important plant pathogens especially due to their ability to invade and change ecosystems. However, information regarding their diversity and distribution is not available in many parts of the ...
  • A critically endangered Proteaceae in the Cape florisitic region threatened by an invasive pathogen 
    Paap, Trudy; Nndanduleni, Mashudu; Wingfield, Michael J. (South African National Biodiversity Institute, 2023-03-29)
    BACKGROUND : Sorocephalus imbricatus (Thunb.) R.Br. is a range-restricted species endemic to the Cape Floristic Region (CFR), South Africa. It is currently classified as Critically Endangered in accordance with the IUCN ...
  • Cypress canker : an important disease discovered for the first time on a native South African tree 
    Wingfield, Michael J.; Marincowitz, Seonju; Pham, Nam Q.; Roets, Francois; Paap, Trudy; Wingfield, Brenda D.; Aylward, Janneke (Wiley, 2022-10)
    Cypress canker is a branch and stem canker disease of Cupressaceae trees, particularly those in the genera Cupressus and Hesperocyparis. These trees have been planted in many parts of the world as ornamentals and the ...
  • Detection of Fusarium euwallaceae and its vector Euwallacea fornicatus on pear (Pyrus communis) and in deciduous fruit orchards in South Africa 
    Engelbrecht, Karyn; Raubenheimer, Inge; Paap, Trudy; Neethling, Emma; Roets, Francois (Springer, 2024-01)
    We present the first report of Fusarium euwallaceae and its ambrosia beetle vector Euwallacea fornicatus in deciduous fruit tree orchards in South Africa. Fusarium euwallaceae, is shown to be pathogenic to pear (Pyrus ...
  • Habitat fragmentation in a Mediterranean-type forest alters resident and propagule mycorrhizal fungal communities 
    Sapsford, Sarah J.; Paap, Trudy; Hopkins, Anna J.M.; Hardy, Giles E.St.J.; Burgess, Treena I. (Elsevier, 2020-01)
    AIMS : Anthropogenic activities disturb forests and their associated mycorrhizal fungi. The combination of climate change and habitat fragmentation are linked to increased incidence of a canker disease in a Mediterranea ...
  • Harmonising the fields of invasion science and forest pathology 
    Paap, Trudy; Wingfield, Michael J.; Burgess, Treena I.; Hulbert, J.M. (Joey); Santini, Alberto (Pensoft Publishers, 2020-10-15)
    Invasive alien species are widely recognised as significant drivers of global environmental change, with far reaching ecological and socio-economic impacts. The trend of continuous increases in first records, with no ...
  • Invasion frameworks : a forest pathogen perspective 
    Paap, Trudy; Wingfield, Michael J.; Burgess, Treena I.; Wilson, John R.U.; Richardson, David M.; Santini, Alberto (Springer, 2022-03)
    PURPOSE OF REVIEW : Within the discipline of invasion science, researchers studying different taxonomic groups have developed distinct ways of investigating the phenomenon of biological invasions. While there have been ...
  • Lessons from a major pest invasion : the polyphagous shot hole borer in South Africa 
    Paap, Trudy; Wingfield, Michael J.; De Beer, Z. Wilhelm; Roets, Francois (AOSIS Open Journals, 2020-11-26)
    The arrival and establishment of invasive forest pests can cause devastating environmental damage and great economic impact. For example, the cost over the past decade of dealing with the arrival of a single invasive beetle ...
  • The polyphagous shot hole borer (PSHB) and its fungal symbiont Fusarium euwallaceae: a new invasion in South Africa 
    Paap, Trudy; De Beer, Z. Wilhelm; Migliorini, Duccio; Nel, Wilma Janine; Wingfield, Michael J. (Springer, 2018-03)
    The polyphagous shot hole borer (PSHB), an ambrosia beetle (Coleoptera: Curculeonidae: Scolytinae) native to Asia, together with its fungal symbiont Fusarium euwallaceae, has emerged as an important invasive pest killing ...
  • The polyphagous shot hole borer beetle : current status of a perfect invader in South Africa 
    Van Rooyen, Elmar; Paap, Trudy; De Beer, Z. Wilhelm; Townsend, Garyn; Fell, Shawn; Nel, Wilma Janine; Morgan, Seamus; Hill, Martin; Gonzalez, Allan; Roets, Francois (Academy of Science of South Africa, 2021-11)
    The polyphagous shot hole borer (PSHB) beetle is a recent invader in South Africa. Together with its fungal symbiont, Fusarium euwallaceae, it can rapidly kill highly susceptible host plants. Its impact is most profound ...
  • Population genetic analyses of Phytophthora cinnamomi reveals three lineages and movement between natural vegetation and avocado orchards in South Africa 
    Engelbrecht, Juanita; Duong, Tuan A.; Paap, Trudy; Hubert, Joseph M.; Hanneman, Juanita Joyce; Van den Berg, Noelani (American Phytopathological Society, 2022)
    Phytophthora cinnamomi is the causal agent of root rot, canker, and dieback of thousands of plant species around the globe. This oomycete not only causes severe economic losses to forestry and agricultural industries, but ...
  • Two novel Phytophthora species from the southern tip of Africa 
    Bose, Tanay; Hulbert, J.M. (Joey); Burgess, Treena I.; Paap, Trudy; Roets, Francois; Wingfield, Michael J. (Springer, 2021-06)
    The microbial diversity associated with natural vegetation in the Greater Cape Floristic Region of South Africa is largely unexplored. As part of the Cape Citizen Science programme and independent research, surveys were ...
  • Urban trees : bridge-heads for forest pest invasions and sentinels for early detection 
    Paap, Trudy; Burgess, Treena I.; Wingfield, Michael J. (Springer, 2017-12)
    Urban trees have been increasingly appreciated for the many benefits they provide. As concentrated hubs of human-mediated movement, the urban landscape is, however, often the first point of contact for exotic pests including ...
  • Worldwide diversity of endophytic fungi and insects associated with dormant tree twigs 
    Franic, Iva; Prospero, Simone; Adamson, Kalev; Allan, Eric; Attorre, Fabio; Auger-Rozenberg, Marie Anne; Augustin, Sylvie; Avtzis, Dimitrios; Baert, Wim; Barta, Marek; Bauters, Kenneth; Bellahirech, Amani; Boron, Piotr; Braganca, Helena; Brestovansk, Tereza; Brurberg, May Bente; Burgess, Treena I.; Burokiene, Daiva; Cleary, Michelle; Corley, Juan; Coyle, David R .; Csoka, Gyorgy; Cerny, Karel; Davydenko, Kateryna; De Groot, Maarten; Diez, Julio Javier; Lehtijärvi, H. Tugba Dogmus; Drenkhan, Rein; Edwards, Jacqueline; Elsafy, Mohammed; Eotvos, Csaba Bela; Falko, Roman; Fan, Jianting; Feddern, Nina; Furjes-Miko, Agnes; Gossner, Martin M.; Grad, Bartłomiej; Hartmann, Martin; Havrdova, Ludmila; Horakova, Miriam Kadasi; Hrabetova, Marketa; Justesen, Mathias Just; Kacprzyk, Magdalena; Kenis, Marc; Kirichenko, Natalia; Kovac, Marta; Kramarets, Volodymyr; Lackovic, Nikola; Lantschner, Maria Victoria; Lazarevic, Jelena; Leskiv, Marianna; Li, Hongmei; Madsen, Corrie Lynne; Malumphy, Chris; Matosevic, Dinka; Matsiakh, Iryna; May, Tom W.; Meffert, Johan; Migliorini, Duccio; Nikolov, Christo; O ’Hanlon, Richard; Oskay, Funda; Paap, Trudy; Parpan, Taras; Piskur, Barbara; Ravn, Hans P eter; Richard, John; Ronse, Anne; Roques, Alain; Ruffner, Beat; Sivickis, Karolis; Soliani, Carolina; Talgo, Venche; Tomoshevich, Maria; Uimari, Anne; Ulyshen, Michael; Vettraino, Anna Maria; Villari, Caterina; Wang, Yongjun; Witzell, Johanna; Zlatkovic, Milica; Eschen, Rene (Nature Research, 2022-03-01)
    International trade in plants and climate change are two of the main factors causing damaging tree pests (i.e. fungi and insects) to spread into new areas. To mitigate these risks, a large-scale assessment of tree-associated ...