16-17 – 2004 – Contents

TORKELL JÓHANNESSON, KRISTÍN BJÖRG GUÐMUNDSDÓTTIR, TRYGGVI EIRÍKSSON, JAKOB KRISTINSSON and SIGURDUR SIGURDARSON
Selenium and GPX activity in blood samples from pregnant and non-pregnant ewes and selenium in hay on scrapie-free, scrapie-prone and scrapie afflicted farms in Iceland – 3

JÓN GEIR PÉTURSSON and ADALSTEINN SIGURGEIRSSON
Direct seeding of boreal conifers on freely drained andosols in Southern Iceland

ANNIKA K. JÄGERBRAND
Patterns of species richness and vegetative performance in heath ecosystems at Thingvellir, Southwest Iceland – 29
THORKIL E. HALLAS and BJARNI E. GUDLEIFSSON
Life cycles of Penthalus major (Dugés) (Acari, Prostigmata) in hayfields in northern Iceland – 39
TORKELL JÓHANNESSON, KRISTÍN BJÖRG GUÐMUNDSDÓTTIR, TRYGGVI EIRÍKSSON, JAKOB KRISTINSSON and SIGURDUR SIGURDARSON
Copper and manganese in hay samples from scrapie-free, scrapie-prone and scrapie-afflicted farms in Iceland 45

STEFÁN FREYR EINARSSON, BJARNI D. SIGURDSSON and ARNÓR SNORRASON
Estimating aboveground biomass for Norway spruce (Picea abies) in Iceland – 53

GUÐNI THORVALDSSON, HÓLMGEIR BJÖRNSSON and JONATHAN HERMANNSSON
The influence of weather on early growth rate of grasses – 65