Genetic Consequences of Multigenerational and Landscape Colonisation Bottlenecks for a Neotropical Forest Pioneer Tree, Vochysia ferruginea

Abstract

The NERC and CEH trade marks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. the genetic make up of recolonised populations. One main concern from these results is that if secondary forest blocks harbour reduced genetic diversity and persist in the landscape, then species like V. ferruginea may be forced into a downward spiral of diversity loss if old growth remnants, which harbour higher diversity, are cleared and secondary blocks are used as reforestation sources. Running head: colonisation bottlenecks in a neotropical pioneer tree

Allozyme variation of the endemic and vulnerable Dyera lowii Hook.f. in Central Kalimantan: Implications for genetic resources conservation

“…In wind-pollinated, long-lived woods, the average F ST values tend to be low (Duminil et al, 2009), F ST =0.028 in Cryptomeria Japonica (Takahashi et al, 2005), the average G ST =0.073 in Gymnosperms (Hamrick et al, 1992). The moderately level was similar to seedling population of Vochysia Ferruginea (F ST =0.069) at Ladrillera (Davies et al, 2010) and a threatened tree Dalbergia nigra (F ST =0.088) in the Brazilian Atlantic Forest (Resende et al, 2011). These values are within the range of differentiation found in other tropical tree populations, where low differentiation was found for Dinizia excelsa (F ST =0.00167) (Dick et al, 2003a) and high levels of differentiation have been found for Caryocar brasiliense (F ST =0.29) (Collevatti et al, 2001), Taxodium distichum shown strong genetic differentiation between populations F ST =0.208 (Tanaka et al, 2012), and Gonystylus bancanus (G ST = 0.9956) (Kusumadewi et al, 2010).…”

“…The F IS value is similar to Instia bijuga (-0.224) using isozyme (Mahfudz, 2011). The F IS value was higher than of a Neotropical Forest Pioneer Tree Vochysia ferruginea in the secondary forest populations observed at Tirimbina (F IS =−0.136) and Ladrillera (F IS =−0.157) (Davies et al, 2010). F IT showed the relative individual inbreeding signifi cantly negative value (-0.143) in all loci (Table 4).…”

The resilience of forest fragmentation genetics—no longer a paradox—we were just looking in the wrong place

“…During the colonization of open landscapes, seed-source bottlenecks can cause a severe reduction in genetic diversity and is particularly an issue for secondary forest colonizing trees (Davies et al, 2010). Under these conditions, pollinator behavior is expected to be impacted by the great variation in tree density between old growth (low density) and secondary forest (high density).…”

“…White et al, 2002;Bacles et al, 2005), which can maintain connectivity even in highly fragmented and degraded landscapes where trees persist at very low densities in matrices of varied land use (for example, Breed et al, 2011;Lander et al, 2011). The second is due to the long-lived nature of trees and the existence of overlapping generations on single sites that serves to retard the loss of genetic diversity (for example, Lowe et al, 2005;Petit and Hampe, 2006;Bacles and Jump, 2010;Davies et al, 2010). Thirdly, flexible mating systems in some species can circumvent self-incompatibility to allow selfed progeny to form , particularly when faced with an Allee effect (lack of compatible mates within a landscape).…”

Phylogeography and Population Structure of Tropical Trees

“…Davies et al (2010) examined genetic consequences of colonization of abandoned pasture by Vochysia ferruginea Mart., which is a long-lived tree that colonizes disturbed areas in Central America. Like other species in the family Vochysiaceae, V. ferruginea tolerates poor soils and aluminum toxicity found in pasture and other degraded tropical landscapes.…”