Acclimation of Potamogeton perfoliatus L. to periphyton accumulation-induced spectral changes in irradiance

Tóth, Viktor R.; Palmer, Stephanie C.

doi:10.1007/s10750-015-2462-3

Cited by 11 publications

(5 citation statements)

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“…Epiphytic algae adhere to and inhabit almost all macrophyte organs in water, and there are competitive and symbiotic relationships between these algae and macrophytes (Cattaneo et al, 1998; Li et al, 2017; Santos et al, 2013). Epiphytic algae in freshwater systems are influenced by a number of physical (Tóth & Palmer, 2016; Vadeboncoeur et al, 2003), chemical (Andrew et al, 2001; Trochine et al, 2014) and biological factors (Hao et al, 2017; Jones & Sayer, 2003; Tunca et al, 2014). Macrophytes can strongly influence the spatial and temporal variability in the epiphytic algal community, especially in areas with high macrophyte coverage (Chambers et al, 2008; Santos et al, 2013; Souza et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Invasion of water hyacinth and water lettuce inhibits the abundance of epiphytic algae

Fan

Wang

et al. 2022

Diversity and Distributions

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Aim:The invasion of exotic macrophytes causes native biodiversity loss in aquatic ecosystems of China. However, the influence of invasive free-floating macrophytes on epiphytic algal communities has rarely been reported, especially in comparison with those of native free-floating macrophytes.Region: Southern China. Methods:We investigated the interrelationship between epiphytic algal communities on the roots of three free-floating macrophytes [two invasive species (Eichhornia crassipes and Pistia stratiotes) and one native species (Hydrocharis dubia)] and environmental factors in 40 natural freshwater ecosystems throughout southern China. We also tested the relationship between allelochemicals from the macrophytes and epiphytic algae. A mesocosm experiment was conducted to verify the discoveries of the field investigation. Results:The abundance of epiphytic algae on the invasive macrophytes was lower than that on the native species in the field investigation and mesocosm experiment.Macrophyte traits were the main factor explaining the epiphytic algal abundance in both the field investigation and mesocosm experiment. In linear models, the slopes of epiphytic algal abundance were lower across gradients of native macrophyte biomass and coverage than across gradients of invasive macrophyte biomass and coverage.The allelochemical contents secreted by the invasive macrophytes were significantly higher than those secreted by the native species. The composition of allelochemicals was another factor that drove the decrease in epiphytic algal abundance. Among the allelochemicals, organic acids and alkaloids were abundant. Main Conclusions:The inhibitory effect of two invasive free-floating macrophytes on epiphytic algae is stronger than that of the native macrophyte H. dubia. The main reason for this finding is that the invasive macrophytes have greater biomass and occupied more space, resulting in greater limitations on spatial niches and resources.Moreover, invasive macrophytes release more allelochemicals than native macrophytes, leading to stronger inhibitory effects on epiphytic algae.

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Section: Introductionmentioning

confidence: 99%

Invasion of water hyacinth and water lettuce inhibits the abundance of epiphytic algae

Fan

Wang

et al. 2022

Diversity and Distributions

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“…Environmental heterogeneity, in joint action with genetic variability and morpho-functional plasticity of macrophyte species, result in faceted phenotypic and phenological adaptations and/or acclimations within the local populations, shaping communities and even individuals [ 7 , 14 – 19 ]. Multi-dimensional trait variability is a recent object of investigation in functional ecology [ 20 – 22 ].…”

Section: Introductionmentioning

confidence: 99%

Leaf reflectance can surrogate foliar economics better than physiological traits across macrophyte species

et al. 2021

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Background Macrophytes are key players in aquatic ecosystems diversity, but knowledge on variability of their functional traits, among and within species, is still limited. Remote sensing is a high-throughput, feasible option for characterizing plant traits at different scales, provided that reliable spectroscopy models are calibrated with congruous empirical data, but existing applications are biased towards terrestrial plants. We sampled leaves from six floating and emergent macrophyte species common in temperate areas, covering different phenological stages, seasons, and environmental conditions, and measured leaf reflectance (400–2500 nm) and leaf traits (dealing with photophysiology, pigments, and structure). We explored optimal spectral band combinations and established non-parametric reflectance-based models for selected traits, eventually showing how airborne hyperspectral data could capture spatial–temporal macrophyte variability. Results Our key finding is that structural—leaf dry matter content, leaf mass per area—and biochemical—chlorophyll-a content and chlorophylls to carotenoids ratio—traits can be surrogated by leaf reflectance with normalized error under 17% across macrophyte species. On the other hand, the performance of reflectance-based models for photophysiological traits substantively varies, depending on macrophyte species and target parameters. Conclusions Our main results show the link between leaf reflectance and leaf economics (structure and biochemistry) for aquatic plants, thus envisioning a crucial role for remote sensing in enhancing the level of detail of macrophyte functional diversity analysis to intra-site and intra-species scales. At the same time, we highlighted some difficulties in establishing a general link between reflectance and photosynthetic performance under high environmental heterogeneity, potentially opening further investigation directions.

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“…macrophytes, are key players, as they are hotspots of biogeochemical cycling, actively impact on ecosystem by regulating water flow and sedimentation, and promote biodiversity by attracting and sheltering large number of species (Schindler & Scheuerell, 2002;Franklin et al, 2008;Jeppesen et al, 2012;Wang et al, 2017). Adaptations to environmental heterogeneity is particularly evident for macrophytes, whose genetic variability and morpho-functional plasticity result in specific phenotypic and phenological patterns within the local population, shaping communities (Elzinga et al, 2007;Chuine, 2010;Tóth & Szabó, 2012;Tóth & Vári, 2013) and even individuals (de Kroon et al, 2005;Tóth & Palmer, 2016).…”

Section: Introductionmentioning

confidence: 99%

Leaf reflectance can surrogate foliar economics better than physiological traits across macrophyte species

Villa

Bolpagni

Pinardi

et al. 2020

Preprint

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Macrophytes are key players in aquatic ecosystems diversity, but knowledge on variability of their functional traits, among and within species, is still limited. Remote sensing is a high-throughput, feasible option for characterizing plant traits at different scales, provided that reliable spectroscopy models are calibrated with congruous empirical data.We sampled leaves from six macrophyte species common in temperate areas, covering different phenological stages, seasons, and environmental conditions, and measured leaf reflectance (400-2500 nm) and traits (dealing with photophysiology, pigments and leaf economics). We explored optimal spectral bands combinations and established non-parametric reflectance-based models for selected traits, eventually showing how airborne hyperspectral data can capture spatial-temporal macrophyte variability.Our key finding is that structural, leaf dry matter content, leaf mass per area (LMA), and biochemical, chlorophyll-a content and chlorophyll to carotenoids ratio, traits can be surrogated by leaf reflectance with relative error under 20% across macrophyte species, while performance of reflectance-based models for photophysiological traits depends on species.This finding shows the link between leaf reflectance and structural-biochemical traits for aquatic plants, thus supporting the use of remote sensing for enhancing the level of detail of macrophyte functional diversity analysis, to intra-site and intra-species scales.

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Acclimation of Potamogeton perfoliatus L. to periphyton accumulation-induced spectral changes in irradiance

Cited by 11 publications

References 48 publications

Invasion of water hyacinth and water lettuce inhibits the abundance of epiphytic algae

Invasion of water hyacinth and water lettuce inhibits the abundance of epiphytic algae

Leaf reflectance can surrogate foliar economics better than physiological traits across macrophyte species

Leaf reflectance can surrogate foliar economics better than physiological traits across macrophyte species

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