caa a22 4500 463192117 CHVBK 20180406164912.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s10973-006-7806-9 doi (NATIONALLICENCE)springer-10.1007/s10973-006-7806-9 Infraredthermography and thermometry of phototropic plants [Elektronische Daten] [I. Lamprecht, C. Maierhofer, M. Röllig] Thermal investigations using infrared (IR) thermometry and false colour thermography were carried out on flowering plants in the Botanical Garden of Berlin and in a private garden. Special interest went to phototropic plants that orient their blossoms towards a light source (mainly the sun) and within this group to solar trackers (heliotropism) that follow the path of the sun during the day. Best known among the latter is the sunflower. Bowl shaped flowers comparable to satellite disks focus the solar radiation effectively on their centre, resulting in a warming of the female organs at that point. Temperature differences above ambient can be as high as 10.7 K with a mean value of 6.0 K. Pollinating insects were often observed sun-basking in the bowls or on the flower disks attracted by energetic rewards in form of nectar and heat. Springer-Verlag, 2007 insects nationallicence IR thermography nationallicence IR thermometry nationallicence phototropism nationallicence plants nationallicence Lamprecht I. Institute of Biology, Department of Biology, Chemistry and Pharmacy, Free University of Berlin, Grunewaldstraße 34, 12165, Berlin, Germany aut Maierhofer C. BAM (Federeral Institute for Materials Research and Testing), Unter den Eichen 87, 12205, Berlin, Germany aut Röllig M. BAM (Federeral Institute for Materials Research and Testing), Unter den Eichen 87, 12205, Berlin, Germany aut Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers 87/1(2007-01-01), 49-54 1388-6150 87:1<49 2007 87 10973 https://doi.org/10.1007/s10973-006-7806-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-006-7806-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lamprecht I. Institute of Biology, Department of Biology, Chemistry and Pharmacy, Free University of Berlin, Grunewaldstraße 34, 12165, Berlin, Germany aut NATIONALLICENCE 700 1- Maierhofer C. BAM (Federeral Institute for Materials Research and Testing), Unter den Eichen 87, 12205, Berlin, Germany aut NATIONALLICENCE 700 1- Röllig M. BAM (Federeral Institute for Materials Research and Testing), Unter den Eichen 87, 12205, Berlin, Germany aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers 87/1(2007-01-01), 49-54 1388-6150 87:1<49 2007 87 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer