page_title: Hans Trass
hierarchical_section_title: Hans Trass
caption_attribution_description: Eesti: Rahvusülikooli 90. aastapäeva üritused. TÜ emeriitprofessor Hans Trass 24. novembri 2009 Tartu Ülikooli botaanikaaias näituse "Eestikeelse botaanika algus ülikoolis" avamisel.
context_page_description: Hans-Voldemar Trass was an Estonian ecologist and botanist. He was a member of the Estonian Academy of Sciences since 1975 and president of the Estonian Naturalists' Society from 1964 to 1973 and 1985 to 1991. In 1992, Trass was awarded the Acharius Medal by the International Association for Lichenology.
  Trass was married to Estonian actress Raine Loo. The couple had a son, composer and organist Toomas Trass.
  Trass died on 14 February 2017, aged 88.
context_section_description: Hans-Voldemar Trass  (2 May 1928 – 14 February 2017) was an Estonian ecologist and botanist. He was a member of the Estonian Academy of Sciences since 1975 and president of the Estonian Naturalists' Society from 1964 to 1973 and 1985 to 1991. In 1992, Trass was awarded the Acharius Medal by the International Association for Lichenology.
  Trass was married to Estonian actress Raine Loo. The couple had a son, composer and organist Toomas Trass.
  Trass died on 14 February 2017, aged 88.
caption: Hans Trass (2009)
exif: {"Image Make": "Canon", "Image Model": "Canon EOS-1D Mark III", "Image Orientation": "Horizontal (normal)", "Image XResolution": "300", "Image YResolution": "300", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "FotoWare FotoStation", "Image DateTime": "2009:11:25 11:37:13", "Image ExifOffset": "219", "GPS GPSVersionID": "[2, 2, 0, 0]", "Image GPSInfo": "633", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "745", "Thumbnail JPEGInterchangeFormatLength": "12415", "EXIF ExposureTime": "1/50", "EXIF FNumber": "28/5", "EXIF ExposureProgram": "Manual", "EXIF ISOSpeedRatings": "800", "EXIF ExifVersion": "0221", "EXIF DateTimeOriginal": "2009:11:24 15:59:34", "EXIF DateTimeDigitized": "2009:11:24 15:59:34", "EXIF ShutterSpeedValue": "352741/62500", "EXIF ApertureValue": "2485427/500000", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "4", "EXIF SubjectDistance": "119/10", "EXIF MeteringMode": "Pattern", "EXIF Flash": "Flash fired, compulsory flash mode", "EXIF FocalLength": "24", "EXIF ExifImageWidth": "2592", "EXIF ExifImageLength": "3888", "EXIF FocalPlaneXResolution": "144000/41", "EXIF FocalPlaneYResolution": "81000/23", "EXIF FocalPlaneResolutionUnit": "2", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Manual Exposure", "EXIF WhiteBalance": "Auto", "EXIF SceneCaptureType": "Standard"}