Related by context. Frequent words. (Click for all words.) 45 tree 41 reconstructions 40 trees 40 conifers 40 conifer 39 arborists 38 dieback 38 measurements 38 lodgepole pine 38 poplar trees 37 genealogies 37 sycamores 36 Douglas fir 36 poplar 36 microclimates 36 foresters 36 sycamore 36 patterns 35 landforms 35 pine trees 35 felling 35 replanting 35 Reconstructing 35 fir tree 35 forester 34 beech trees 34 atmospheric circulation 34 reconstruct 34 morphology 34 birches 34 hardwood trees 34 ENSO 34 arborist 34 harvesting 34 genealogy 34 planting 34 migratory patterns 33 arboreal 33 thinning 33 forests 33 aerial photographs 33 mapping 33 larch 33 birch 33 oak trees 33 poplars 33 reconstructed 33 cedar trees 32 stumpage 32 reforestation 32 neural networks 32 deciduous 32 reconstructing 32 yew 31 fir trees 31 forest 31 Forests 31 cherry trees 31 genealogical 31 cedars 31 tree seedlings 31 pine 30 hemlocks 30 Douglas firs 30 variability 30 sapling 30 tress 30 tree planting 30 uprooting 30 grove 30 tracing 30 surveying 30 sequencing 30 mathematical models 30 pruning 30 felled trees 30 planting trees 30 boughs 30 Mapping 29 migratory routes 29 timber 29 salvage logging 29 firs 29 overlaying 29 fir 29 fractal 29 fossilized 29 analyzing 29 researching 29 horse chestnut 29 Logging 29 hardwoods 29 mulberry 29 forestry 29 soil erosion 29 ocean currents 29 reforest 29 understory 28 interrelationships 28 felling trees 28 woodlands