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    Browsing POST-DOCTORAL RESEARCH OUTPUTS by Title

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    Now showing items 126-145 of 214

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      • National parks impact and pathways database for plants 

        Spear, Dian; van Wilgen, Nicola; Foxcroft, L.C. (2012-03-07)
        A database of potential impacts and possible pathways of introduction for alien plants in national parks in South Africa.
      • Natural dispersal to sub-Antarctic Marion Island of two arthropod species 

        Lee, J.E.; Terauds, A.; Chown, S.L. (Springer, 2014)
        Distinguishing between species that are recent natural colonists, recent anthropogenic introductions, or previously unknown, but long-term resident native species, is a challenge for those who manage the conservation of ...
      • “Nested” cryptic diversity in a widespread marine ecosystem engineer: a challenge for detecting biological invasions 

        Teske, P.R.; Rius, M.; McQuaid, C.D.; Styan, C.A.; Piggott, M.P.; Benhissoune, S.; Fuentes-Grünewald, C.; Walls, K.; Page, M.; Attard, C.R.M.; Cooke, G.M.; McClusky, C.F.; Banks, S.C.; Baker, N.P.; Beheregaray, L.B. (BioMed Central Ltd., 2011)
        Background: Ecosystem engineers facilitate habitat formation and enhance biodiversity, but when they become invasive, they present a critical threat to native communities because they can drastically alter the receiving ...
      • Niche differentiation among invasive crayfish and their impacts on ecosystem structure and functioning 

        Jackson, M.C.; Jones, T.; Milligan, M.; Sheath, D.; Taylor., J.; Ellis, A.; England, J.; Grey, J. (John Wiley & Sons Ltd, 2014)
        1. Many aquatic ecosystems sustain multiple invasive species and interactions among them have important implications for ecosystem structure and functioning. Here, we examine interactions among two pairs of invasive crayfish ...
      • No differences in genetic diversity of Cotoneaster franchetii (Rosaceae) shrubs between native and non-native ranges 

        Lett, I.; Hensen, I.; Hirsch, H.; Renison, D. (Sociedad Argentica de Botanica, 2015)
        It is commonly assumed that plants have more genetic diversity in their native range than in areas where they have been introduced due to founder effects. However, few studies have proven this assumption and included the ...
      • No survival of native larval frogs in the presence of invasive Indian bullfrog Hoplobatrachus tigerinus tadpoles 

        Mohanty, N.P.; Measey, J. (Springer, 2019)
        Invasive amphibians have considerable negative impacts on recipient ecosystems, however, impact has been assessed for only a few species, limiting risk assessments. In particular, the impact of invasive anurans with ...
      • Non-indigenous ungulates as a threat to biodiversity 

        Spear, D.; Chown, S.L. (The Zoological Society of London, 2009)
        Non-indigenous ungulate species pose a problem for conservation. They can be socially and economically valuable, but are also potentially harmful to biodiversity. Therefore, their introduction requires an explicit ...
      • Non-native rainbow trout (Oncorhynchus mykiss) occupy a different trophic niche to native Breede River redfin (Pseudobarbus burchelli) which they replace in South African headwater streams 

        Shelton, J.M.; Bird, M.S.; Samways, M.J.; Day, J.A. (John Wiley & Sons Ltd, 2017)
        Recent research has revealed that non-native rainbow trout Oncorhynchus mykiss have largely replaced a native cyprinid, the Breede River redfin Pseudobarbus burchelli, as the dominant species of fish in many headwater ...
      • A novel bioenergy feedstock in Latin America? Cultivation potential of Acrocomia aculeate under current and future climate conditions 

        Plath, M.; Moser, C.; Bailis, R.; Brandt, P.; Hirsch, H.; Klein, A.M.; Walmsley, D.; von Wehrden, H. (Elsevier Ltd, 2016)
        Plant oil is a key commodity in the global economy, particularly for food and bioenergy markets. However, current production practices often impair smallholder livelihoods, cause land use changes, and compete for food ...
      • On the accuracy of conservation managers' beliefs and if they learn from evidence-based knowledge: A preliminary investigation 

        McConnachie, M.M.; Cowling, R.M. (Elsevier Ltd., 2013)
        Despite the significant impetus placed on the need for conservation managers to base their decisions on evidence-based findings, few studies have compared the accuracy of “evidence” versus experience-based knowledge. ...
      • Operative temperature dataset in areas with native and invasive vegetation 

        Garcia, Raquel A.; Morran, Ella E.; Clusella-Trullas, Susana
        Operative temperature data collected in both “native areas” (native renosterveld vegetation) and “invaded areas” (native renosterveld vegetation areas invaded by alien trees, mainly Acacia saligna). The data were collected ...
      • Organismal complexity is an indicator of species existence value 

        Wilson, J.R.U.; Proches, S.; Braschler, B.; Dixon, E.S.; Richardson, D.M. (The Ecological Society of America, 2008)
      • Origin of climatic data can determine the transferability of species distribution models 

        Datta, A.; Schweiger, O.; Kühn, I. (2020)
        Methodological research on species distribution modelling (SDM) has so far largely focused on the choice of appropriate modelling algorithms and variable selection approaches, but the consequences of choosing amongst ...
      • The origins of marine mites: Interpreting geographical and ecological patterns 

        Marshall, DJ; Procheş, Ş (2007-03-28)
        Hypotheses are advanced concerning the origins of non-halacarid mites in the marine environment. The hypothesis that oribatid (ameronothroid) and astigmatid (hyadesioid) taxa have had longer marine associations than their ...
      • An overview of the Cape geophytes 

        Proches, S.; Cowling, R.M.; Goldblatt, P.; Manning, J.C.; Snijman, D.A. (The Linnean Society of London, 2006)
        The Cape Region (here treated as the winter rainfall region of southern Africa, thus including fynbos, renosterveld and succulent karoo vegetation) is the world’s foremost centre of geophyte diversity. Some 2100 species ...
      • Pathways and gateways of freshwater invasions in Europe 

        Nunes, A.L.; Tricarico, E.; Panov, V.E.; Cardoso, A.C.; Katsanevakis, S. (REABIC, 2015)
        Taking into account the continuous increase in freshwater introductions, and to support the recent European legislation on invasive alien species, the identification of priority pathways and gateways of introductions is ...
      • Phenotypic plasticity in locomotor performance of a monophyletic group of weevils accords with the ‘warmer is better’ hypothesis 

        Treasure, A.M.; Chown, S.L. (The Company of Biologists Ltd, 2019)
        Ectotherms may respond to variable environmental conditions by altering their phenotypes. Phenotypic plasticity was initially thought to be beneficial to an organism’s physiological fitness but several alternative hypotheses ...
      • Phenotypic variation in Xenopus laevis tadpoles from contrasting rainfall regimes is the result of adaptation and plasticity 

        Kruger, Natasha; Secondi, Jean; Du Preez, Louis; Herrel, Anthony; Measey, John
        Phenotypic variations between populations often correlate with climatic variables. Assessing the adaptation of a species’ populations from differing environments over a large spatial scale can provide insight into the ...
      • Physiological responses to fluctuating thermal and hydration regimes in the chill susceptible insect, Thaumatotibia leucotreta 

        Boardman, L.; Sorensen, J.G.; Terblanche, J.S. (Elsevier, 2013)
        Fluctuating thermal regimes (FTR), consisting of cycles between stressful low and benign temperatures, are known to improve survival and fecundity in a variety of insects. By contrast, fluctuating hydration regimes (FHR) ...

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