Absorptive root-multidimension strategy links air temperature and species distribution in a montane forest

Forest Ecosystems, Journal Year: 2023, Volume and Issue: 10, P. 100113 - 100113

Published: Jan. 1, 2023

Air temperature affects absorptive root traits, which are closely related to species distribution. However, it is still unclear how air regulates distribution through changes in traits. Seven functional traits of the roots 240 individuals 52 species, soil properties and were measured along an elevational gradient on Mt. Fanjingshan, Tongren City, Guizhou, then direct indirect effects these controls detected. Absorptive adapted with two strategies. The first strategy was positively associated specific area (SRA) length (SRL) negatively tissue density (RTD), representing classic economics spectrum (RES). second represented by trade-off between diameter, mycorrhizal fungi colonization (MF) SRL, collaboration "do yourself" resource uptake ranging from "outsourcing" uptake. regulated six ways: directly reducing importance value; indirectly increasing value nitrogen content or pH moisture inducing change absorption absorption; decreasing resulting turning into nutrient foraging traits; promoting conservation play a crucial role regulation multi-approaches temperature.

Language: Английский

---

Do phylogenetic and environmental factors drive the altitudinal variation in absorptive root traits at the species and community levels?

Plant and Soil, Journal Year: 2023, Volume and Issue: 494(1-2), P. 203 - 215

Published: Sept. 11, 2023

Language: Английский

---

Elevational variation in morphology and biomass allocation in carpathian snowbell Soldanella carpatica (Primulaceae)

PeerJ, Journal Year: 2024, Volume and Issue: 12, P. e17500 - e17500

Published: May 28, 2024

Plants growing along wide elevation gradients in mountains experience considerable variations environmental factors that vary across elevations. The most pronounced elevational changes are climate conditions with characteristic decrease air temperature an increase elevation. Studying intraspecific plant morphological traits and biomass allocation gives opportunity to understand how plants adapted steep change they may respond related global warming. In this study, phenotypic variation of alpine Soldanella carpatica Vierh. (Primulaceae) was investigated on 40 sites distributed continuously a 1,480-m gradient the Tatra Mountains, Central Europe. Mixed-effects models, by which were fitted elevation, revealed part total leaf mass, size scape height decreased gradually whereas dry mass investment roots flowers as well individual flower did not Unexpectedly, uppermost overall size, including both below-and aboveground parts, rapidly causing abrupt miniaturization. Despite miniaturization at highest elevations, partitioning changed entire species range, namely, fraction continuously, root:shoot ratio increased steadily from lowest Observed S. phenotypes seen structural adjustments elevations chances survival reproduction different Moreover, results present study agreed observations populations ‘Soldanella’ intrageneric group subnival zones still maintain typical ‘Soldanella’-like appearance, despite reduction size.

Language: Английский

---

Effects of temperature gradient on functional fruit traits: an elevation-for-temperature approach

BMC Ecology and Evolution, Journal Year: 2024, Volume and Issue: 24(1)

Published: July 9, 2024

Abstract Fruit traits mediate animal-plant interactions and have to a large degree evolved match the sensory capacities morphology of their respective dispersers. At same time, fruit are affected by local environmental factors, which may affect frugivore-plant trait match. Temperature has been identified as major factor with strong effect on development fruits, is serious concern because rising threat global warming. Nonetheless, this primarily originates from studies domesticated cultivars in often controlled environments. Little known temperatures wild species implications could seed dispersal networks, including downstream consequences biodiversity ecosystem functioning. In case study five plant eastern Madagascar, we addressed using elevation-for-temperature approach examined whether temperature gradient systematically associated variation relevant for animal foraging selection. We sampled across representing 1.5–2.6 °C, corresponding IPCC projections. The results showed that most cases there was no significant evaluated, although some different effects, particularly chemical profiles. This suggests these warming within range alone not likely drive substantial changes networks. While systemic effects were found, also indicate differs lead mismatches specific interactions.

Language: Английский

---

Precipitation-induced soil properties and plant communities mediate root strategies in an alpine meadow

Journal of Plant Ecology, Journal Year: 2024, Volume and Issue: 17(6)

Published: Aug. 13, 2024

Abstract Plant roots show flexible traits to changing precipitation, but the factors driving root trait covariation remain poorly understood. This study investigated six key and explored potential factors, including plant community characteristics soil properties, in Zoige alpine meadow across five precipitation gradients: natural (1.0P), a 50% increasing (1.5P), 30%, 90% decreasing (0.7P, 0.5P 0.1P, respectively). Our results demonstrated distinct responses changes precipitation. Both (1.5P) (0.1P, 0.7P) inhibited diameter (RD), specific length (SRL) area compared with 1.0P. Conversely, tissue density nitrogen content increased under declined 1.5P. With foraging strategies shifted thinner RD larger SRL that diameter. Shifts were primarily influenced by specifically water available nitrogen. Additionally, surface soils (0–10 cm) mainly related grass sedge coverage, whereas deeper (10–20 overall coverage biomass. findings indicate variations meadows are co-driven properties communities response

Language: Английский

---

Species identity and resource availability explain variation among above and below-ground functional traits in Himalayan temperate forests

Flora, Journal Year: 2023, Volume and Issue: 306, P. 152363 - 152363

Published: Aug. 11, 2023

Language: Английский

---

Divergent mechanisms of reduced growth performance in Betula ermanii saplings from high-altitude and low-latitude range edges

Heredity, Journal Year: 2023, Volume and Issue: 131(5-6), P. 387 - 397

Published: Nov. 9, 2023

The reduced growth performance of individuals from range edges is a common phenomenon in various taxa, and considered to be an evolutionary factor that limits the species' range. However, most studies did not distinguish between two mechanisms can lead this reduction: genetic load adaptive selection harsh conditions. To address lack understanding, we investigated climatic factors underlying Betula ermanii saplings transplanted 11 populations including high-altitude edge low-latitude population. We estimated position within overall B. ermanii's distribution, composition diversity using restriction-site associated DNA sequencing, measured survival, rates individual size saplings. population (APW) was located below 95% significance interval for mean annual temperature range, but show any distinctive characteristics. In contrast, (SHK) exhibited high level linkage disequilibrium, low diversity, distinct other populations, relatedness coefficient. Both APW SHK displayed lower survival rates, heights diameters, while also than populations' diameters likely result conditions, load. Our findings shed light on range-edge populations.

Language: Английский

---

Linking functional composition moments of the sub-Mediterranean ecotone with environmental drivers

Frontiers in Plant Science, Journal Year: 2023, Volume and Issue: 14

Published: Dec. 8, 2023

Functional trait-based approaches are extensively applied to the study of mechanisms governing community assembly along environmental gradients. These have been classically based on studying differences in mean values among species, but there is increasing recognition that alternative metrics trait distributions should be considered decipher determining and species coexistence. Under this framework, main aim unravel effects conditions as drivers plant sub-Mediterranean ecotones.We set 60 plots six communities a forest Central Spain, measured key above- belowground functional traits 411 individuals belonging 19 with abiotic variables. We calculated community-weighted (CWM), skewness (CWS) kurtosis (CWK) three dimensions, used maximum likelihood techniques analyze how variation these was driven by factors. Additionally, we estimated relative contribution intraspecific variability turnover CWM.The first axes principal component analyses were related ecological dimensions: Leaf Economics Spectrum, Root Spectrum hydraulic architecture, respectively. Type most important factor structure communities, compared role found strong their CWMs line biogeographic origin (Eurosiberian vs Mediterranean), while CWS CWK indicate different trends coexistence strategies, Moreover, changes composition primarily due variability.We observed high number strategies spreading acquisitive-conservative axis resource-use, partly matching Eurosiberian-Mediterranean nature, Intraspecific variability, rather than turnover, stood relevant when analyzing patterns communities. Altogether, our data support notion ecotones ecosystems where relatively minor shifts may result composition.

Language: Английский

---

Shrub encroachment modifies soil properties through plant resource economic traits

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 23, 2024

Background and Aims Shrub encroachment alters ecosystem functions. Yet, changes in plant community traits soil properties along succession from grassland to shrubland European mountains are poorly understood. Methods We investigated the cascading effects of shrubs on weighted means (CWM) onto a gradient subalpine grasslands two sites Alps using trait-based approach. hypothesized that increasing shrub density shifts communities towards more conservative traits, which non-linearly increases carbon sequestration impacts nutrient cycling. tested our model structural equation models. This accounted for biomass allocation leaves stems CWM calculations. Results Consistent with expectations, dry matter content (DMC) increased nitrogen (N) phosphorus (P) decreased biomass. Increasing DMC resulted C:N ratio organic (SOM) concentration, decreasing pH. Decreasing P was coupled available P, but N had no effect N. There however indication nonlinear changes. Conclusion study demonstrates gradually become tougher nutrient-poor tissues, leads acidification, SOM accumulation lower availability. also demonstrate DMC, an easy measurable trait, is sufficient indicator tissue quality encroached could be used future models, allowing projections under climate change scenarios.

Language: Английский

---

Root traits and functioning: from individual plants to ecosystems

Authorea (Authorea), Journal Year: 2022, Volume and Issue: unknown

Published: Dec. 8, 2022

Root traits and functioning: from individual plants to ecosystemsFine roots, the most distal portions of root system, are responsible for uptake water nutrients by plants, represent main type plant tissue contributing soil organic matter accrual, key drivers mineral weathering microbial dynamics (Bardgett et al. 2014). Despite overwhelming importance fine community functioning biogeochemical cycles, basic information about their ecology is lacking, particularly compared wealth developed leaves stems. Testing hypotheses on how underlie these ecosystem processes has been hampered due (1) a paucity systematically collected data (2) complexity relationships between root, functioning. Nonetheless, development field in last two decades outstanding, particular compilation belowground trait datasets (Iversen 2017), methodological ecological handbooks (Freschet 2021b), novel conceptual frameworks describe diversity (Bergmann 2020), its connection with function 2014, Freschet 2021a), species’ distributions (Laughlin 2021), scaling up level (McCormack 2017). The papers that feature this Special Issue ecosystems cover different climate regions, taxonomic spatial scales, (Table 1) form perfect examples upward moment component ecology.

Language: Английский

---