3
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: not found
      • Article: not found

      Areal distribution of a Neodiprion sertifer (Hym., Diprionidae) outbreak on Scots pine as related to stand condition

      ,

      Ecography

      Wiley

      Read this article at

      ScienceOpenPublisher
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Related collections

          Most cited references7

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

          A hypothesis to explain outbreaks of looper caterpillars, with special reference to populations of Selidosema suavis in a plantation of Pinus radiata in New Zealand.

          A hypothesis originally postulated to explain changes in abundance of sapsucking insects is here extended to an interpretation of changes in abundance of populations of geometrid defoliators.The hypothesis states that most herbivorous insects usually remain at a low level of abundance relative to the apparent abundance of their food because most of them die when very young from a relative shortage of nitrogen in their food.Only occasionally do their food plants become a sufficient source of nitrogen to allow a high proportion of the young insects to survive, and the population to increase to outbreak levels.The plants become a richer source of nitrogen when they are stressed by random fluctuations in the summer and winter rainfall, although other factors such as soil type and topography may contribute to this stress.The hypothesis may well have wider application to population fluctuations of other herbivores-both invertebrate and vertebrate.
            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Gas exchange in a 20-year-old stand of Scots pine. I. Net photosynthesis of current and one-year-old shoots within and between seasons

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

              Utilization of dry matter and bioelements in larvae of Neodiprion sertifer Geoffr. (Hym., Diprionidae) feeding on Scots pine (Pinus sylvestris L.)

                Bookmark

                Author and article information

                Journal
                Ecography
                Ecography
                Wiley
                0906-7590
                1600-0587
                May 1984
                May 1984
                : 7
                : 2
                : 81-90
                Article
                10.1111/j.1600-0587.1984.tb01108.x
                d5d5fc8d-c344-40a1-9e08-c377f4afc659
                © 1984

                Comments

                Comment on this article