Can ecological strategies be explained by photochemical efficiency in ironstone outcrops vegetation?

Rios, Camilla Oliveira; Pimentel, Paulo Antônio; Živčák, Marek; Brestič, Marián; Pereira, Eduardo Gusmão

doi:10.1007/s11104-022-05562-7

Cited by 5 publications

(7 citation statements)

References 66 publications

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“…Therefore, it supported our results that the typical karst forest in the subtropical region in this study is approached to the late-successional stage of the community, thus supporting the S strategy dominance followed by the C and R strategies according to our results, which verified our hypothesis of H1. Zhou (2021) and Rios (2022) found that most species and communities exhibit high-stress tolerance by adopting the S strategy, followed by the C strategy in the poo-resource ecosystem [42,43]. According to the CSR theory of Grime (1977), the S strategy plants are mainly for survival by stress-tolerance in harsh habitat conditions, and the C strategy plants are mainly for conquest through competition due to scarce resources, while the R strategy plants are mainly for reproduction through increasing individuals of a population [2].…”

Section: The Ecological Strategy In the Karst Forestsmentioning

confidence: 99%

“…Most species exhibit high-stress tolerance in the degraded ecosystem by adopting the S strategy [42]. Rios (2022) showed that S strategy species can better adapt to harsh environments, followed by C strategy [43]. Therefore, we hypothesized that most karst woody plants and communities adopt the predominant S strategy followed by C and R (H1).…”

Section: Introductionmentioning

confidence: 99%

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Strategy Trade-Off of Predominant Stress Tolerance Relative to Competition and Reproduction Associated with Plant Functional Traits under Karst Forests

Umer

et al. 2023

Forests

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The Grime (1974) CSR framework posits that ecological strategies of competition, stress tolerance and ruderal reflect plants’ adaptability to their survival environments. Karst forests are crucial for terrestrial ecosystem functions. However, how karst forests regulate plant functional traits in ecological strategy to adapt to infertile habitats remains unclear. Therefore, we surveyed fifty-three karst forest plots and measured plant functional traits involving the plan diameter at breast height (DBH), height, leaf area (LA), specific leaf area (SLA), leaf dry matter content (LDMC), leaf carbon (LC) and nitrogen (LN) and phosphorus (LP) with the leaf water content (LWC). We calculated CSR components on the individual and community levels introduced by community-weighted means (CWM) using the ‘StrateFy’ calculator. Principal component analysis (PCA) and Mantel’s test were used to investigate trait correlations with CSR components. Our results showed that stress tolerance (S) contributed an average 65.88% and 63.63% in individuals and communities, respectively, followed by competition (C) at 25.82% and 29.63%, and the least, ruderal (R), at 8.30% and 6.74%. Different plant functional traits exhibited different variations, coupled with significant correlations between CSR components and PC1 scores (except for CWM− LA, SLA and LDMC). Component S increased with the increase in CWM− LC and C:N ratio, and decreased with the increase in CWM− DBH, Height, LWC, LN, and N:P ratio, while it was the opposite for C and R, highlighting strategic trade-offs associated with plant functional traits. Mantel’s test revealed varied key trait combinations for each strategy. In conclusion, the predominant stress tolerance strategy relative to competition and ruderal is a result of trade-offs regulating karst forests, in association with plant functional traits. The disentangled CSR strategies provide insights into theoretically understanding functional maintenance for infertile forest ecosystems as an evolutional regulation mechanism.

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Section: The Ecological Strategy In the Karst Forestsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Strategy Trade-Off of Predominant Stress Tolerance Relative to Competition and Reproduction Associated with Plant Functional Traits under Karst Forests

Umer

et al. 2023

Forests

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“…Despite the fact that ferruginous are often considered an inauspicious environment for many plants to thrive, there is a great biodiversity rate of both plants and animals. More than that, there is a high rate of endemic species in ferruginous campo rupestre, that present morphophysiological and functional adjustments to thrive in these stress-prone conditions (Carmo & Jacobi, 2013;Rios et al, 2022), even though they occupy the same ecological niche of low P in the soil.…”

Section: General Introductionmentioning

confidence: 99%

“…Accompanying the high biodiversity rate, there is a high diversity of functional traits in plants species in the canga vegetation. Because the soil is nutrient impoverished, there are morphological and physiological adaptations displayed such as narrow leaves, greater sclerophylly, greater amplitude of foliar areas, slow growth, accumulation of nutrients in the tissues, among others Rios et al, 2022). There are many botanical families that inhabit this landscape, the richest ones being the Poaceae, Asteraceae and Fabaceae .…”

Section: General Introductionmentioning

confidence: 99%

“…It is expected that in P-impoverished environments the plant species possess leaves with longer life spans (LLS), higher leaf dry mass contents (LDMC) and leaf mass per area (LMA). Also would be present some morphological leaf adaptations such as thinner shaped and thicker leaves and even presence of trichomes (Medeiros et at., 2008;Rios et al, 2022). These adaptations directly and indirectly affect how the species respond to stressful conditions .…”

Section: Introductionmentioning

confidence: 99%

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Photosynthetic strategies and Phosphorus use efficiency of Asteraceae species in Campo Rupestre

Braga¹

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The threatened brazilian ferruginous campo rupestre, also known as canga is a fire prone and nutrient impoverished landscape, with high diversity of functional traits. The plant species found in this environment are generally characterized as of slow growth, higher leaf mass per area (LMA) and leaf dry mass content (LDMC), limited more by phosphorus (P) than nitrogen (N) when compared to other grasslands. In chapter one, a bibliographical review was conducted in order to establish the current state of P nutrition in those landscapes. In chapter two, the field work, conducted in the Serra da Calçada (MG, Brazil) during the rainy season of 2021 and 2022 was described. This work’s main goal was to understand the diversity of strategies to acquire and use P in Asteraceae species from ferruginous campo rupestre, regarding their functional traits and photosynthetic performance. To accomplish this, five Asteraceae species were selected: Dasyphyllum velutinum, Baccharis reticularia, Lychnophora pinaster, Trixis vauthieri and Hololepis pedunculata. A high diversity of functional traits, such as LMA, LDMC, foliar area and nutrient concentration was found. Some of which can be directly and indirectly related to the diversity of strategies to better absorb and use P. The species showed, in general, 70% mycorrhizal colonization and retranslocation rates of 77% and 65% for P and N, respectively. Even though these species have a diversity of functional traits, their photosynthetic P-use efficiency and P fractions (metabolic, nucleic acid, lipidic and residual) showed no significant difference. Finally, it was concluded that the diversity of functional traits found in Asteraceae species is most likely related by its phylogeny and the history of evolution of Asteraceae in the ferruginous campo rupestre. The ecological filters imposed by nutrient availability pressure during their evolutionary path have converged into a similar physiological performance. Keywords: P-fractions. Canga. Nutritional strategies. Photosynthetic P-use efficiency. Mycorrhiza. Convergence.

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Iron excess and nitrogen deprivation influence photosynthetic metabolism in grasses used for mineland rehabilitation

Rios,

de Araújo

et al. 2023

Theor. Exp. Plant Physiol.

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Can ecological strategies be explained by photochemical efficiency in ironstone outcrops vegetation?

Cited by 5 publications

References 66 publications

Strategy Trade-Off of Predominant Stress Tolerance Relative to Competition and Reproduction Associated with Plant Functional Traits under Karst Forests

Strategy Trade-Off of Predominant Stress Tolerance Relative to Competition and Reproduction Associated with Plant Functional Traits under Karst Forests

Photosynthetic strategies and Phosphorus use efficiency of Asteraceae species in Campo Rupestre

Iron excess and nitrogen deprivation influence photosynthetic metabolism in grasses used for mineland rehabilitation

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