Genetic resilience of Atlantic forest trees to impacts of biome loss and fragmentation

Santana, Natália Santos de; Santos, Alesandro Souza; Borges, Daniela B.; França, Daniele de Souza; Reis, Jeiza Botelho Leal; Oliveira, Fernanda Ancelmo de; Barreto, Mariana Araújo; Corrêa, Ronan Xavier; Zucchi, Maria Imaculada; Martins, Karina; Melo, Sônia Cristina Oliveira; Loguércio, Leandro Lopes; Gaiotto, Fernanda Amato

doi:10.1007/s10342-022-01516-x

Cited by 3 publications

(1 citation statement)

References 75 publications

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“…Such factors are linked to a disturbance, induced population fragmentation and large decrease in the size and number of individual plants, followed by a decrease of the green soil surface. The habitat’s degradation reduces the adaptive potential of L. multifida to environmental changes, causing it to possess more vulnerable populations [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

A New Lavender (Lavandula multifida L.) Ecotype from Arid Tunisia, with Differential Essential Oil Composition and Higher Antimicrobial Potential

Tofah

Mseddi

Al-Abbasi³

et al. 2022

Life

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The lavender Lavandula multifida L., a medicinal plant grown in arid regions of Tunisia, was recently considered an endangered species; thus, its habitats regressed to some difficult zones in terms of access, such as the watershed of Oued Agareb in central-eastern Tunisia. This species was recorded only in deep and narrow shady Wadi of the watershed and benefited from protection against overgrazing, erosion and sunlight. L. multifida was rarely observed in an open area, such as a plateau or large-bed valley. The plant’s metabolism is linked to its response to environmental conditions, which is of particular interest to understanding the components of the considered population of L. multifida. Consequently, biochemical and antimicrobial analyses have been evaluated. Using gas chromatography-mass spectrometry (GC-MS) analysis reveals that among the 58 compounds identified in L. multifida essential oil extracted from aboveground plant tissues, camphor was the major component (15.68%), followed by 1,8-cineole (14.14%) and alpha-pinene (13.82%). Moreover, it has been observed that Escherichia coli was more susceptible than Staphylococcus aureus to the antimicrobial properties of L. multifida essential oil, while in the case of camphor, S. aureus was more susceptible than E. coli. The protected population of L. multifida exhibits a distinctive vegetative development and growth cycle, resulting in specific secondary metabolites and distinguished antimicrobial activity.

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Section: Introductionmentioning

confidence: 99%

A New Lavender (Lavandula multifida L.) Ecotype from Arid Tunisia, with Differential Essential Oil Composition and Higher Antimicrobial Potential

Tofah

Mseddi

Al-Abbasi³

et al. 2022

Life

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Guiding seed movement: environmental heterogeneity drives genetic differentiation in Plathymenia reticulata, providing insights for restoration

Conceição,

Santos,

Fernandes

et al. 2024

AoB PLANTS

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Forest and landscape restoration is one of the main strategies for overcoming the environmental crisis. This activity is particularly relevant for biodiversity-rich areas threatened by deforestation, such as tropical forests. Efficient long-term restoration requires understanding the composition and genetic structure of native populations, as well as the factors that influence these genetic components. This is because these populations serve as the seed sources and, therefore, the gene reservoirs for areas under restoration. In the present study, we investigated the influence of environmental, climatic, and spatial distance factors on the genetic patterns of Plathymenia reticulata Benth., aiming to support seed translocation strategies for restoration areas. We collected plant samples from nine populations of P. reticulata in the state of Bahia, Brazil, located in areas of Atlantic Forest and Savanna, across four climatic types, and genotyped them using nine nuclear and three chloroplast microsatellite markers. The populations of P. reticulata evaluated generally showed low to moderate genotypic variability and low haplotypic diversity. The populations within the Savanna phytophysiognomy showed values above average for six of the eight evaluated genetic diversity parameters. Using this classification based on phytophysiognomy demonstrated a high predictive power for genetic differentiation in P. reticulata. Furthermore, the interplay of climate, soil, and geographic distance influenced the spread of alleles across the landscape. Based on our findings, we propose seed translocation, taking into account the biome, with restricted use of seed sources acquired or collected from the same environment as the areas to be restored (Savanna or Atlantic Forest).

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A New Paradigm for Assessing Detailed Dynamics of Forest Landscape Fragmentation

Lin,

Zhen,

Zhao

et al. 2024

Forests

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There is an urgent need for a thorough assessment of forest landscape fragmentation to inform forest protection and restoration, and reforestation policies. However, there is currently a lack of an effective comprehensive index for forest landscape fragmentation, and detailed knowledge of the forest landscape fragmentation dynamics remains insufficient. Here, taking Putian City of Fujian Province in Southeastern China as a case, we employed a forest fragmentation comprehensive index (FFCI) to capture key features of forest landscape fragmentation, such as patch size, number, and distribution. Then, bivariate spatial autocorrelation analysis was employed to identify the spatial associations between the static forest landscape fragmentation (FFCI) and the dynamic forest landscape fragmentation (ΔFFCI), and the spatial coupling modes among the three individual components of FFCI (mean patch area, MPA; aggregation index, AI; patch density, PD) were identified to explore the detail process of forest landscape fragmentation. Finally, the random forest model was applied to observe the impact factors of forest landscape fragmentation dynamics. The findings showed that forest landscapes with different degrees of fragmentation exhibited more noticeable changes at both ends (i.e., either high or lower-level fragmentation), with the intermediate level remaining consistent from 2000 to 2020. Around 18.3% of forest landscapes experienced a decrease in fragmentation, particularly in the northern part of the study area, while approximately 81.7% of forest landscapes exhibited an increasing trend in fragmentation. The bivariate spatial autocorrelation analysis indicated that the proportion of Low–High-type grids was the highest at 17.3%, followed by the High–High type at 7.0%. We also identified eight forest landscape fragmentation modes, which indicate the most significant forest landscape fragmentation pattern is a decrease in MPA and an increase in PD. Moreover, the anthropogenic factors (e.g., population density and night light intensity) were found to dominate the FFCI dynamics during 2000–2020. This study offers an efficient research paradigm for the dynamics of forest landscape fragmentation. The outcomes are conducive to an in-depth comprehension of the detailed dynamic information of forest landscape fragmentation, and supply a scientific foundation for enhancing the overall ecological service function of the forest.

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Genetic resilience of Atlantic forest trees to impacts of biome loss and fragmentation

Cited by 3 publications

References 75 publications

A New Lavender (Lavandula multifida L.) Ecotype from Arid Tunisia, with Differential Essential Oil Composition and Higher Antimicrobial Potential

A New Lavender (Lavandula multifida L.) Ecotype from Arid Tunisia, with Differential Essential Oil Composition and Higher Antimicrobial Potential

Guiding seed movement: environmental heterogeneity drives genetic differentiation in Plathymenia reticulata, providing insights for restoration

A New Paradigm for Assessing Detailed Dynamics of Forest Landscape Fragmentation

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