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The distribution of Raunkiaer life forms in Israel in relation to the environment
Author(s) -
Danin Avinoam,
Orshan Gideon
Publication year - 1990
Publication title -
journal of vegetation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 115
eISSN - 1654-1103
pISSN - 1100-9233
DOI - 10.2307/3236051
Subject(s) - distribution (mathematics) , mean radiant temperature , physical geography , environmental science , atmospheric sciences , ecology , hydrology (agriculture) , geography , biology , climate change , geology , mathematics , mathematical analysis , geotechnical engineering
. The distribution of Raunkiaer life forms along rainfall and temperature gradients was determined for the floras of 27 geomorphological districts in Israel. Phane‐rophytes and chamaephytes are relatively strongly represented in districts with very low rainfall, decrease up to 150 mm and 400 mm of mean annual rainfall respectively, and remain more or less constant at higher rainfall figures. Hemicryptophytes andgeophytes increase along the rainfall gradient. Therophytes show an optimum between 200 and 500 mm of rainfall. The distribution of life forms is less clearly correlated with mean annual temperature, though hemicryptophytes and geophytes show a negative correlation with mean annual temperature and with mean annual minimal temperature.