Arboriculture & Urban Forestry quizzes are available free online to members for one year after the date of publication; a maximum of six quizzes are available at any time. CEU quizzes for older articles may be purchased by both members and non-members.
Urban trees provide many environmental benefits but often face challenging growing conditions, such as waterlogged soils. Our goal was to identify how the roots of temperate urban tree species respond to and recover from waterlogging. Waterlogging resulted in high fine-root mortality and reduced photosynthesis rates for two magnolia species (Magnolia × soulangeana and M. stellata) and sugar maple (Acer saccharum), whereas silver maple (A. saccharinum) was highly tolerant of waterlogging. Both magnolias showed new fine-root growth and increased photosynthesis rates after a 10-day recovery period, while sugar maple did not resume fine-root growth and never recovered. Further understanding of different root strategies used by trees to cope with waterlogging stress will help inform urban tree selection for repeatedly flooded soils. 1 CEU (A, U, M, T, Bp)
ISA's scientific journal Arboriculture & Urban Forestry (AUF) helps disseminate new research findings about the management of trees in urban environments. This quiz highlights an article from an issue of AUF with the objective of bridging the gap between scientific research and practical application. Learn about the latest arboricultural research happening around the world while also earning your CEUs.
CEUs for this quiz may be earned only once during the life of your certification.