Tree growth and regeneration response to climate and stream flow in a species-rich southwestern riparian forest

Donna M. Galuszka, Thomas E Kolb

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We studied the influence of climate variables, stream flow, and topography on regeneration and growth of several riparian tree species (Acer negundo, Alnus oblongifolia, Fraxinus velutina, Juglans major, Platanus wrightii, Populus fremontii, Salix spp.) at an unregulated perennial stream, West Clear Creek, in central Arizona. A pulse of seedling regeneration occurred for Alnus, Fraxinus, Platanus, Populus, and Salix in 1995 and 1996 following high winter and spring surface flows in 1993 and high spring surface flow in 1995. In contrast, little regeneration occurred for Acer and Juglans under these conditions. Most seedlings occurred at the active channel topographic location, and few seedlings occurred at abandoned channel, gravel-boulder bar, and bench locations. Relationships between environmental variables and annual radial stem growth varied among species and between constrained and unconstrained reaches. High spring or winter surface flows were negatively related to growth of Acer, Alnus, and Platanus, whereas high spring surface flow was positively related to growth of Fraxinus. Positive relationships between precipitation and growth occurred only for Fraxinus and Juglans, suggesting greater use of surface soil water by these species. Annual radial growth was high for Platanus and Alnus, medium for Acer and Fraxinus, and low for Juglans. Overall, the tree species in our study responded individually, rather than collectively, in regeneration and growth to changes in stream flow and climatic variables.

Original languageEnglish (US)
Pages (from-to)266-279
Number of pages14
JournalWestern North American Naturalist
Volume62
Issue number3
StatePublished - Jul 2002

Fingerprint

Fraxinus
Alnus
riparian forest
riparian forests
overland flow
Platanus
stream flow
Juglans
tree growth
streamflow
Acer
regeneration
climate
Salix
seedlings
Fraxinus velutina
Juglans major
Populus fremontii
Acer negundo
seedling

Keywords

  • Acer negundo
  • Alnus oblongifolia
  • Arizona
  • Climate
  • Dendrochronology
  • Fraxinus velutina
  • Juglans major
  • Platanus wrightii
  • Populus fremontii
  • Regeneration
  • Riparian
  • Salix
  • Stream flow
  • Tree ring

ASJC Scopus subject areas

  • Ecology

Cite this

Tree growth and regeneration response to climate and stream flow in a species-rich southwestern riparian forest. / Galuszka, Donna M.; Kolb, Thomas E.

In: Western North American Naturalist, Vol. 62, No. 3, 07.2002, p. 266-279.

Research output: Contribution to journalArticle

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