1
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: not found
      • Book Chapter: not found
      Neotropical Diversification: Patterns and Processes 

      Origin of Elevational Replacements in a Clade of Nearly Flightless Birds: Most Diversity in Tropical Mountains Accumulates via Secondary Contact Following Allopatric Speciation

      ,

      Springer International Publishing

      Read this book at

      Publisher
      Buy book Bookmark
          There is no author summary for this book yet. Authors can add summaries to their books on ScienceOpen to make them more accessible to a non-specialist audience.

          Related collections

          Most cited references 84

          • Record: found
          • Abstract: found
          • Article: not found

          Are mountain passes higher in the tropics? Janzen's hypothesis revisited.

          Synopsis In 1967 Daniel Janzen published an influential paper titled "Why Mountain Passes Are Higher in the Tropics." Janzen derived a simple climatic-physiological model predicting that tropical mountain passes would be more effective barriers to organismal dispersal than would temperate-zone passes of equivalent altitude. This prediction derived from a recognition that the annual variation in ambient temperature at any site is relatively low in the tropics. Such low variation within sites not only reduces the seasonal overlap in thermal regimes between low- and high-altitude sites, but should also select for organisms with narrow physiological tolerances to temperature. As a result, Janzen predicted that tropical lowland organisms are more likely to encounter a mountain pass as a physiological barrier to dispersal (hence "higher"), which should in turn favor smaller distributions and an increase in species turnover along altitudinal gradients. This synthetic hypothesis has long been at the center of discussions of latitudinal patterns of physiological adaptation and of species diversity. Here we review some of the key assumptions and predictions of Janzen's hypothesis. We find general support for many assumptions and predictions, but call attention to several issues that somewhat ameliorate the generality of Janzen's classic hypothesis.
            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Bird Species Diversity on an Andean Elevational Gradient

             John Terborgh (1977)
              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Distribution on Environmental Gradients: Theory and a Preliminary Interpretation of Distributional Patterns in the Avifauna of the Cordillera Vilcabamba, Peru

               John Terborgh (1971)
                Bookmark

                Author and book information

                Book
                978-3-030-31166-7
                978-3-030-31167-4
                2020
                10.1007/978-3-030-31167-4
                Book Chapter
                2020
                March 31 2020
                : 635-659
                10.1007/978-3-030-31167-4_23

                Comments

                Comment on this book

                Book chapters

                Similar content 1,451

                Cited by 1