Browsing by Author "Zaviezo, Tania"

Now showing items 1-9 of 9

    • Efecto de la fragmentación, pérdida de hábitat y aislamiento de alfalfa sobre la abundancia y dispersión ... 
      Maureira Ceura, Luisa Margarita (Universidad de Chile, 2003)
      La fragmentación del hábitat es el proceso por el cual un hábitat relativamente continuo es subdividido en fragmentos más pequeños que quedan aislados entre sí por una matriz de composición o estructura diferente. La ...
    • Efectos de la pérdida de hábitat y aislamiento diferencial de la vegetación sobre la abundancia, riqueza y ... 
      Cid Froncini, Gonzalo Mauricio (Universidad de Chile, 2003)
      La fragmentación del hábitat es el proceso por el que áreas relativamente continuas de hábitat son subdivididas en pequeños fragmentos que quedan aislados entre sí por una matriz usualmente inhóspita para los organismos ...
    • Effects of habitat loss, habitat fragmentation, and isolation on the density, species richness, and ... 
      Zaviezo, Tania; Grez Villarroel, Audrey; Estades Marfán, Cristián; Pérez, Astrid (BLACKWELL, 2006-12)
      1. Habitat loss and fragmentation are the main causes of changes in the distribution and abundance of organisms, and are usually considered to negatively affect the abundance and species richness of organisms in a landscape. ...
    • The harlequin ladybird, Harmonia axyridis: global perspectives on invasion history and ecology 
      Roy, Helen; Brown, Peter; Adriaens, Tim; Berkvens, Nick; Borges, Isabel; Clusella Trullas, Susana; Comont, Richard; De Clercq, Patrick; Eschen, Rene; Estoup, Arnaud; Evans, Edward; Facon, Benoit; Gardiner, Mary; Gil, Artur; Grez Villarroel, Audrey; Guillemaud, Thomas; Haelewaters, Danny; Herz, Annette; Honek, Alois; Howe, Andy; Hui, Cang; Hutchison, William; Kenis, Marc; Koch, Robert; Kulfan, Jan; Handley, Lori; Lombaert, Eric; Loomans, Antoon; Losey, John; Lukashuk, Alexander; Maes, Dirk; Magro, Alexandra; Murray, Katie; San Martín, Gilles; Martinkova, Zdenk; Minnaar, Ingrid; Nedved, Oldrich; Orlova Bienkowskaja, Marina; Osawa, Naoya; Rabitsch, Wolfgang; Ravn, Hans; Rondoni, Gabriele; Rorke, Steph; Ryndevich, Sergey; Saethre, May; Sloggett, John; Soares, Antonio; Stals, Riaan; Tinsley, Matthew; Vandereycken, Axel; van Wielink, Paul; Viglasova, Sandra; Zach, Peter; Zakharov, Ilya; Zaviezo, Tania; Zhao, Zihua (Springer, 2016)
      The harlequin ladybird, Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae), is native to Asia but has been intentionally introduced to many countries as a biological control agent of pest insects. In numerous countries, ...
    • Local predator composition and landscape affects biological control of aphids in alfalfa fields 
      Grez Villarroel, Audrey; Zaviezo, Tania; Gardiner, Mary M. (Elsevier, 2014)
      The biological control service supplied to croplands is a result of the predator community present within a focal crop, which is likely influenced by surrounding landscape composition and configuration. In this study, ...
    • Mechanisms affecting population density in fragmented habitat 
      Tischendorf, Lutz; Grez Villarroel, Audrey; Zaviezo, Tania; Fahrig, Lenore (RESILIENCE ALLIANCE, 2005-06)
      We conducted a factorial simulation experiment to analyze the relative importance of movement pattern, boundary-crossing probability, and mortality in habitat and matrix on population density, and its dependency on habitat ...
    • Seasonal, spatial and diel partitioning of Acyrthosiphon pisum (Hemiptera: Aphididae) predators and predation ... 
      Ximenez Embun, Miguel G.; Zaviezo, Tania; Grez Villarroel, Audrey (Elsevier, 2014)
      Predators are important natural enemies, often responsible for preventing pest population outbreaks of in many crops. Complementarity in resource use involves spatial or temporal segregation of predators, which can result ...
    • Short-term effects of habitat fragmentation on the abundance and species richness of beetles in experimental ... 
      Grez Villarroel, Audrey; Zaviezo, Tania; Reyes, Susana (SOCIEDAD BIOLOGIA CHILE, 2004-09)
      Habitat loss and fragmentation are considered as the main causes of biodiversity depression. Habitat loss implies a reduction of suitable habitat for organisms, and habitat fragmentation is a change in the spatial configuration ...
    • The invasive coccinellid Harmonia axyridis (Coleoptera: Coccinellidae) is a less suitable host for parasitism ... 
      Romero, Violeta; Zaviezo, Tania; Grez Villarroel, Audrey (Pontifica Univ. Católica de Chile, 2020)
      Harmonia axyridis (Pallas) has invaded most continents in the world, including South America. In Chile, it became invasive after 2010, turning into a dominant species in coccinellid guilds in alfalfa crops, where it coexists ...