Plant growth and nutrient use efficiency of two native Fabaceae species for mineland revegetation in the eastern Amazon

Ramos, Silvio J.; Gastauer, Markus; Mitre, Simone Kuster; Caldeira, Cecílio Fróis; Silva, Joyce R.; Neto, Antônio Eduardo Furtini; Oliveira, Guilherme de; Filho, Pedro Walfir Martins Souza; Siqueira, José Oswaldo

doi:10.1007/s11676-019-01004-w

Cited by 25 publications

(30 citation statements)

References 24 publications

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“…Mimosa acutistipula is drought tolerant and well adapted to the low nutrient content of Canga soils (Silva et al., 2018)⁠. On the other hand, D. apurensis requires low nutrient inputs and shows high nutrient use efficiency (Ramos, Gastauer, et al, 2019)⁠. Moreover, this species is a fast‐growing liana with a ground‐covering growth form, enabling the revegetation and stabilization of mine pits and waste piles.…”

Section: Introductionmentioning

confidence: 99%

Combining genotype, phenotype, and environmental data to delineate site‐adjusted provenance strategies for ecological restoration

Carvalho

Forester

Mitre

et al. 2020

Molecular Ecology Resources

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Despite the importance of climate‐adjusted provenancing to mitigate the effects of environmental change, climatic considerations alone are insufficient when restoring highly degraded sites. Here we propose a comprehensive landscape genomic approach to assist the restoration of moderately disturbed and highly degraded sites. To illustrate it we employ genomic data sets comprising thousands of single nucleotide polymorphisms from two plant species suitable for the restoration of iron‐rich Amazonian Savannas. We first use a subset of neutral loci to assess genetic structure and determine the genetic neighbourhood size. We then identify genotype‐phenotype‐environment associations, map adaptive genetic variation, and predict adaptive genotypes for restoration sites. Whereas local provenances were found optimal to restore a moderately disturbed site, a mixture of genotypes seemed the most promising strategy to recover a highly degraded mining site. We discuss how our results can help define site‐adjusted provenancing strategies, and argue that our methods can be more broadly applied to assist other restoration initiatives.

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Section: Introductionmentioning

confidence: 99%

Combining genotype, phenotype, and environmental data to delineate site‐adjusted provenance strategies for ecological restoration

Carvalho

Forester

Mitre

et al. 2020

Molecular Ecology Resources

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“…Mimosa acutistipula is drought tolerant and well adapted to the low nutrient content of Canga soils . On the other hand, D. apurensis requires low nutrient inputs and shows high nutrient use efficiency (Ramos et al, 2019b). Moreover, this species is a fast-growing liana with a ground-covering growth form, enabling the revegetation and stabilization mine pits and waste piles.…”

Section: Being Native Species and Dominant In Canga Environments Mimmentioning

confidence: 99%

Combining genotype, phenotype, and environmental data to delineate site-adjusted provenance strategies for ecological restoration

Carvalho

Forester

Mitre

et al. 2019

Preprint

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Despite the importance of climate-adjusted provenancing to mitigate the effects of climate change, climatic considerations alone are insufficient when restoring highly degraded sites. Here we employ a comprehensive landscape genomic approach to assist the restoration of moderately disturbed and highly degraded sites. Relying on genotyping-by-sequencing we identified thousands of single nucleotide polymorphisms in two plant species of special interest for the restoration of iron-rich Amazon Savannas from the Eastern Amazon. We first used a subset of neutral loci to assess genetic structure and determine the genetic neighborhood size, and then combined uni-variate and multivariate methods to identify genotype-environment and genotype-phenotype associations, representing local adaptations. We then mapped adaptive genetic variation and predicted adaptive genotypes for both restoration sites. Whereas local provenances where found optimal to restore the moderately disturbed site, a mixture of genotypes was the most promising strategy to recover a highly degraded mining site, to which local provenances were not adapted. We discuss how our results can help define site-adjusted provenancing strategies and argue that our methods can be more broadly applied to assist other restoration and rehabilitation initiatives.

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“…On the plateaus of Serra dos Carajás (eastern Amazon), one of the largest high-grade iron ore reserves in the world [ 10 ], surface mining is accompanied by the challenge of rehabilitating large areas that have undergone severe degradation. Moreover, despite the benefits of replanting and the legal requirements related to offsetting biodiversity loss [ 11 ], very little information can be found in regard to the selection, propagation, and establishment of distinct plant communities of canga physiognomies [ 12 , 13 , 14 ], a rich savanna-like vegetation type growing over iron-rich substrates at the tops of mountains [ 15 , 16 ]. This open vegetation type can face a series of adverse environmental conditions, in particular, high UV radiation exposure, elevated daily temperatures, nutrient depletion in poorly developed soils, low water retention capacities, and prominent drought periods [ 10 ], and therefore possibly carries adaptive traits that could be conducive to successful mine land rehabilitation.…”

Section: Introductionmentioning

confidence: 99%

“…Grass strips can be effective for soil conservation and rehabilitation by reducing runoff, capturing eroded materials, and, together with biomass deposition, reducing nutrient loss and enhancing fertility [ 21 ]. Moreover, the expected high iron tolerances of both species, which have already been reported for both genera [ 22 , 23 ], are of special advantage, as the high iron availability remaining in mining waste substrates is a significant challenge to rehabilitation processes, in addition to the low natural fertility of these substrates [ 13 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

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Native Amazonian Canga Grasses Show Distinct Nitrogen Growth Responses in Iron Mining Substrates

Caldeira¹,

Lima²,

Ramos³

et al. 2021

Plants

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Native species may have adaptive traits that are advantageous for overcoming the adverse environmental conditions faced during the early stages of mine land rehabilitation. Here, we examined the nitrogen (N) growth responses of two native perennial grasses (Axonopus longispicus and Paspalum cinerascens) from canga in nutrient-poor iron mining substrates. We carried out vegetative propagation and recovered substantial healthy tillers from field-collected tussocks of both species. These tillers were cultivated in mining substrates at increasing N levels. The tillering rates of both species increased with the N application. Nonetheless, only in P. cinerascens did the N application result in significant biomass increase. Such growth gain was a result of changes in leaf pigment, stomatal morphology, gas exchanges, and nutrients absorption that occurred mainly under the low N additions. Reaching optimum growth at 80 mg N dm−3, these plants showed no differences from those in the field. Our study demonstrates that an input of N as fertilizer can differentially improve the growth of native grasses and that P. cinerascens plants are able to deposit high quantities of carbon and protect soil over the seasons, thus, making them promising candidates for restoring nutrient cycling, accelerating the return of other species and ecosystem services.

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Plant growth and nutrient use efficiency of two native Fabaceae species for mineland revegetation in the eastern Amazon

Cited by 25 publications

References 24 publications

Combining genotype, phenotype, and environmental data to delineate site‐adjusted provenance strategies for ecological restoration

Combining genotype, phenotype, and environmental data to delineate site‐adjusted provenance strategies for ecological restoration

Combining genotype, phenotype, and environmental data to delineate site-adjusted provenance strategies for ecological restoration

Native Amazonian Canga Grasses Show Distinct Nitrogen Growth Responses in Iron Mining Substrates

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