Evolutionary Biology of Acacia caven (Leguminosae, Mimosoideae): Infraspecific Variation in Fruit and Seed Characters

N2-Fixation, nodule efficiency and biomass accumulation after two years in three Chilean legume trees and Tagasaste Chamaecytisus proliferus subsp. palmensis

“…This was, in fact, to be expected, since all three belong to the Mimosoideae, while Tagasaste is in the Papilionoideae, like Robinia pseudoacacia. As Aronson et al (1992) have previously reported, relatively accelerated growth rate in the NFTs (and, of course, N2 -fixing herbs) of this subfamily, permits far greater BNF per plant. However, trade-offs in terms of plant longevity, resistance to environmental stress, etc., may be expected.…”

“…palmensis ("Tagasaste"), a fast-growing tree or shrub from Las Palmas, Canary Islands, is a highly valuable source of animal fodder in the mediterraneanclimate zones of Australia, Spain, and elsewhere (Snook, 1989) and shows great adaptability in central Chile (Ovalle et al, 1993a). Moreover, it belongs to the Papilionoideae subfamily and therefore can be expected to show faster growth rates and higher BNF potential than most or all Mimosoideae (Aronson et al, 1992).…”

“…In the anthropogenic savannas, or "espinales" that occupy the mediterranean climate region of central Chile (Ovalle et al, 1990), a single woody species Acacia caven (Molina) Molina (see Aronson, 1992) dominates over 2,000,000 ha of the central valley, wherever irrigated agriculture is not practised (Ovalle, 1986;Ovalle andAvendafio, 1987, 1988;Ovalle and Del Pozo, 1994). In the context of a long-term program aimed at the ecological and economic rehabilitation of this area Ovalle et al, 1990), we have begun a field experiment whose primary objective is to characterize N2-fixation in Acacia caven and three other multipurpose trees of interest for central Chile.…”

Use of alternative containers for promoting deep rooting of native forest species used for dryland restoration: the case of Acacia caven

“…Among these, Acacia caven is one of the most widespread Neotropical South American tree species (latitude 18° to 37° S - Aronson 1992). It has been commonly used for the reforestation of degraded arid regions (Donoso et al 2015), as its massive and deep-rooted system allows it to cope with a sudden abundance of water (Aronson 1992).…”

“…Among these, Acacia caven is one of the most widespread Neotropical South American tree species (latitude 18° to 37° S - Aronson 1992). It has been commonly used for the reforestation of degraded arid regions (Donoso et al 2015), as its massive and deep-rooted system allows it to cope with a sudden abundance of water (Aronson 1992). This species generates positive interactions (facilitation) with co-occurring tree species that have lower water-stress resistance (Armesto & Pickett 1985), as it improves both the soil nutritional level due to its high nitrogen fixation potential and the microclimatic conditions under the canopy (Aronson 1992).…”