Browsing by Subject "endemism"

Now showing 1 - 2 of 2
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    Contulma paluguillensis (Trichoptera:Anomalopsychidae), a new caddisfly from the high Andes of Ecuador, and its natural history
    (University of Chicago Press, 2012) Holzenthal, Ralph W.; Rios-Touma, Blanca
    Adults and larvae of a new species of Contulma Flint (Trichoptera:Anomalopsychidae) are described from Ecuador. The new species is similar to Contulma papallacta Holzenthal and Flint, but differs in having shorter, less spatulate dorsolateral processes and shorter setose lateral processes of segment IX in the male genitalia. Monthly Hess, sticky trap, and emergence-trap collections indicated that the new species is uncommon, probably univoltine, but with continuous larval growth and extended adult emergence, and has algivorous larvae.
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    History, dispersal limitation, and environment shape the current and future ranges of forest herbs of the Southern Appalachians
    (2018-08) Erlandson, Stephanie
    As climate changes, favorable climatic conditions for some species might cease to overlap with their current geographic ranges, due to low dispersal rates, barriers to dispersal, or lack of microhabitats, among others. Here, we focus on herbaceous paleoendemics plants in the Southern Appalachian Mountains, possibly threatened by climate change. We developed species distribution models to identify areas of predicted current suitable habitat, both inside and outside of ranges, and evaluated the extent to which these areas shift or move northwards under various future climate scenarios. We discovered predicted suitable habitat in northern areas disjunct from current ranges, suggesting dispersal limitation. We also found severe reductions in predicted suitable habitat under future climate scenarios, both in geographic extent and in percent suitability. Results from models created using more widespread species reinforced these results. Thus, it is imperative to employ conservation efforts in order to prevent species declines or extinctions.