Journal ArticleDOI
Differentiation in some populations of Eucalyptus viminalis Labill. In Relation to Factors Affecting Seedling Establishment
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Genetic variation was observed among a series of Eucalyptus viminalis populations whose habitats range from wet to dry climates and from relatively fertile to infertile soils, and two high-rainfall populations showed rapid germination and fast early seedling growth.Abstract:
Genetic variation was observed among a series of Eucalyptus viminalis populations whose habitats range from wet to dry climates and from relatively fertile to infertile soils.. In comparison with populations from low-rainfall areas, two high-rainfall populations showed rapid germination and fast early seedling growth, the latter being correlated with large seed weight. Older seedlings were capable of continuing fast growth in response to high nutrient levels, and the root/shoot ratios of 6-month-old seedlings were significantly lower than those of seedlings from low-rainfall areas. Populations from within the low-rainfall areas showed some differences in germination, root lengths and growth rates and these appear to be related to site fertility and soil water-holding capacity. Relatively slow growth, even in response to increased nutrient supply, was observed in a population naturally occurring on a granite soil of fair fertility but poor water-holding capacity. Low-rainfall populations also showed a greater lignotuber development than high-rainfall populations and the growth of the lignotuber was not markedly affected by nutrient supply.read more
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BookDOI
Ecology and biogeography of mediterranean ecosystems in Chile, California, and Australia
TL;DR: The authors compared Mediterranean-type climate ecosystems in different parts of the world and provided a strong test for ecological convergence, but also critical understanding of key ecophysiological and population processes, and provided ecologists with some of the most scientifically rewarding opportunities to formulate and evaluate hypotheses about large and small-scale ecological phenomena.
Journal ArticleDOI
Lignotubers and burls— their structure, function and ecological significance in Mediterranean ecosystems
TL;DR: In the perennial shrubs of the California chaparral, and in other similar Mediterranean-type ecosystems, one of the most significant modes of reproduction is characterized by sprouting after injury of new stem or root tissue from an ontogenetically produced swollen stem base/root crown known as a lignotuber (or “burl”).
Book ChapterDOI
Seed-Germination Patterns in Fire-Prone Mediterranean-Climate Regions
TL;DR: In all mediterranean ecosystems many woody and herbaceous species recover after wildfires by resprouted from below-ground vegetative structures, but resprouting is a widespread trait in plants and is probably a preadaptation to surviving fires.
Journal ArticleDOI
Giant eucalypts – globally unique fire‐adapted rain‐forest trees?
TL;DR: It is argued that, because giant eucalypts occur in rain-forest climates and share traits withRain-forest pioneers, they should be regarded as long-lived rain-Forest pioneers, albeit with a particular dependence on fire for regeneration.
Journal ArticleDOI
Maternal and carryover effects on early growth of Eucalyptus globulus
TL;DR: Maternal and nonmaternal reciprocal effects were compared with nuclear genetic and carryover effects using a diallel mating amongst eight Eucalyptus globulus LabillWild parents from northeastern and southern Tasmania races exhibited a significant maternal effect, increasing seed germinative capacity but not germination rate.
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