Soil Carbon Storage in Experimental Forest Plantations with Tropical Species

Orozco, Celia de la Mora; Garnica, José Germán Flores; Acuña, Irma Julieta González; Solorio, Juan de Dios Benavides; Martínez, Cesar S. Magaña; Valencia, Laura Izascum Pérez

doi:10.4236/ojf.2022.121001

Cited by 2 publications

(1 citation statement)

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“…Among other essential ecosystem functions provided by tropical forests (plantations) are carbon sequestration and storage, contributing significantly to the global carbon cycle. However, their potential to accumulate aboveground biomass or soil carbon can be affected by genetic variation in the species considered (Chmura et al, 2021;Mora-Orozco et al, 2022). Nevertheless, it is noteworthy that such relationships between genetic variation and ecological diversity or function may not always be strong, positive, or significant.…”

Section: Genetic Diversity Drives Ecological Diversity and Ecosystem ...mentioning

confidence: 99%

Genetic Variation in Tropical Tree Species and Plantations: A Review

Oluwajuwon¹,

Attafuah²,

Offiah³

et al. 2022

OJF

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The global efforts to restore tropical forests and their productive and ecological functions through plantation forestry largely depend on the available genetic variation in the tree species used to establish the plantations. However, there is limited information on the levels and trends of the genetic variation and variability of different plantation tree species in the tropics. Therefore, this study reviews several marker-based studies that have investigated genetic variation. Most of the top economic species like Eucalyptus tereticornis and Mansonia altissima are attributed to low levels of genetic diversity, while others like Pinus caribaea and Swietenia macrophylla still exhibit high expected heterozygosity across different populations. However, the levels of genetic diversity assessed may depend on the markers used. Microsatellites, i.e., simple sequence repeats (SSRs), mostly give higher estimates when compared to other polymerase chain reaction-based markers. Other factors that typically contribute to the directional pattern of genetic variation in tropical tree species and populations include their distribution, density, seed dispersal, succession, and reproduction. Also, anthropogenic impacts like logging and fragmentation have contributed to the vast genetic base reduction of many tropical species and populations. Having adequate genetic variation within the plantation populations is significant in improving their fitness, resilience, fecundity, productivity, and other ecological functions. It also provides a basis for tree improvement and breeding in plantation forests. Although clonal forestry is becoming widespread and considered highly productive, it is attributed to specific economic, technical, and ecological risks, such as the increased spread of pests and diseases. Therefore, further discussions and recommendations to maximise genetic diversity in tropical (clonal) plantations are provided.

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Section: Genetic Diversity Drives Ecological Diversity and Ecosystem ...mentioning

confidence: 99%