Nitrogen and phosphorus influence Acacia saligna invasiveness in the fynbos biome

Esterhuizen, Nanike; Forrester, Jane; Esler, Karen J.; Wigley-Coetzee, Corlie; Morcillo, Rafael J. L.; Kleinert, Aleysia; Pérez‐Fernández, María; Valentine, Alex J.

doi:10.1007/s11258-020-01010-7

Cited by 8 publications

(5 citation statements)

References 52 publications

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“…Forrester et al [106] also recorded high cycling of P in annual leaf litterfall production in an Acacia mearnsii plantation. The high addition of P in AMDF and P use efficiency indicates a high P demand, common in areas with N-fixing species [107]. Inagaki et al [26] found a positive correlation between the production of reproductive parts with soil P availability, consistent with our findings of high reproductive output in both Acacia-invaded habitats.…”

Section: Effects Of Acacia Invasion On Stand-level Nutrient Use Effic...supporting

confidence: 89%

Differential Impacts of Acacia Invasion on Nutrient Fluxes in Two Distinct Bornean Lowland Tropical Rain Forests

Jaafar

Metali

Nafiah

et al. 2022

Forests

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Invasive Acacia species can alter nutrient cycling processes in forest ecosystems, particularly affecting total litterfall production and litter decomposition patterns. This study examined the effects of exotic Acacia mangium Willd. on total litterfall production, nutrient concentrations in leaf litterfall fractions, leaf litter decomposition, and nutrient release in lowland heath (HF) and mixed dipterocarp forests (MDF) in Brunei Darussalam, Borneo. Above-ground litterfall traps were installed in HF and MDF with and without invasive Acacia present, representing four habitat types in total, and monthly collections were conducted for 12 months. Litter decomposition bags were deployed to determine the rates of decomposition and nutrient release. Habitats invaded by Acacia exhibited higher total litterfall production, increased leaf litter concentrations of nitrogen, potassium, and calcium, and increased addition of all nutrients measured in litter (nitrogen, phosphorus, potassium, calcium, and magnesium, especially in the Acacia-invaded mixed dipterocarp forest (AMDF) and nitrogen and potassium in Acacia-invaded heath forest (AHF)), reduced nitrogen and potassium use efficiencies in AHF, and reduced stand-level nitrogen and calcium use efficiencies in AMDF. Litter decomposition rates and nutrient release were lower in AMDF than in the three other habitats. The significantly higher total litterfall production coupled with higher nutrient addition in the two Acacia-invaded habitats is expected to progressively increase the abilities of these habitats to produce large quantities of nutrient-rich litter and will likely eventually lead to an enrichment of nutrients in the soil, thus facilitating further invasion by Acacia, particularly in the MDF.

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Section: Effects Of Acacia Invasion On Stand-level Nutrient Use Effic...supporting

confidence: 89%

Differential Impacts of Acacia Invasion on Nutrient Fluxes in Two Distinct Bornean Lowland Tropical Rain Forests

Jaafar

Metali

Nafiah

et al. 2022

Forests

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“…Simultaneously, NP15:2 may provide additional phosphorus to support RNA synthesis in introduced populations. This preference for phosphorus can aid in the maintenance of introduced plant mass and larger leaf area ( Rivas-Ubach et al 2012 ; Esterhuizen et al 2020 ).…”

Section: Discussionmentioning

confidence: 99%

Chlorophyll fluorescence characteristics and H2O2 contents of Chinese tallow tree are dependent on population origin, nutrients and salinity

He,

Ge,

Hui

et al. 2024

AoB PLANTS

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Plants from invasive populations often have higher growth rates than conspecifics from native populations due to better environmental adaptability. However, the roles of improved chlorophyll fluorescence or antioxidant defenses in helping them to grow better under adverse situations are insufficient, even though this is a key physiological question for elucidating mechanisms of plant invasion. Here, we conducted experiments with eight native (China) and eight introduced (US) populations of Chinese tallow tree (Triadica sebifera). We tested how salinity, nutrients (overall amount or N:P in two separate experiments) and their interaction affected T. sebifera aboveground biomass, leaf area, chlorophyll fluorescence and antioxidant defenses. Plants from introduced populations were larger than those from native populations but salinity and nutrient shortage (low nutrients or high N:P) reduced this advantage, possibly reflecting differences in chlorophyll fluorescence based on their higher PSII maximum photochemical efficiency (Fv/Fm) and PSI maximum photo-oxidizsable P700 in higher nutrient conditions. Native population plants had lower Fv/Fm with saline. Except in high nutrients/ N:P with salinity, introduced population plants had lower electron transfer rate and photochemical quantum yield. There were no differences in antioxidant defenses between introduced and native populations except accumulation of hydrogen peroxide (H2O2) which was lower for introduced populations. Low nutrients, high N:P or salinity increased total antioxidant capacity and H2O2. Our results indicate that nutrients and salinity induce differences in H2O2 contents and chlorophyll fluorescence characteristics between introduced and native populations of an invasive plant, illuminating adaptive mechanisms using photosynthetic physiological descriptors in order to predict invasions.

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“…Previously it was reported that invasive species are common in semi-arid areas because of their specific environmental needs, such as the amount of light they need [40]. Recent studies concluded that the high amounts of ecosystem disturbance occurring in all kinds of habitats, including riparian ecosystems, rural farmland, urban greenbelts, wetland ecosystems, and forest ecosystems, facilitated the invasion of new species [6,[41][42][43].…”

Section: Effect Of P Juliflora On the Associatedmentioning

confidence: 99%

Climate Change Heightens the Threat Posed by the Invasive <i>Prosopis juliflora</i> (SW.) D.C. in the Jeddah Region, Saudi Arabia

Hassan,

Al Shaye,

Fadl

et al. 2023

Pol. J. Environ. Stud.

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Some invasive plants threaten native species, limit plant variety, and frequently result in the extinction of several native species with commercial value. The current study was conducted in Jeddah, Saudi Arabia, a semi-arid region where droughts are becoming more severe because of climate change. The purpose of the current study was to study the effects of Prosopis juliflora on native species as well as soil parameters. The current results showed that aridity of the study area increased from the period between 1970 and 2021, as shown by a decline in the Lange, Emberger, and De Martonne aridity indices by 36%, 33.5%, and 0.5%, respectively. P. juliflora has been observed in a wide variety of habitats, including sand dunes, marshy wetlands, and inland wadis. P. juliflora enhanced phenolic content, salinity, salt, potassium, nitrogen, phosphorus, and organic matter while decreasing soil acidity. More than 63% of the species in North and South Jeddah associated with the P. juliflora tree disappeared, and the density of the remaining species decreased by 54% to 97%. Annual species had the largest percentage of the vanished plants, with 82% in South Jeddah and 66% in North Jeddah. The current study shows the extent of the P. juliflora threat to local plants, especially that the region is exposed to greater drought because of climate change, which requires taking the necessary precautions and good management to limit the spread of this invasive plant. The current study is considered an important step that can provide important information on the effects of P. juliflora on Asia's biodiversity.

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Nitrogen and phosphorus influence Acacia saligna invasiveness in the fynbos biome

Cited by 8 publications

References 52 publications

Differential Impacts of Acacia Invasion on Nutrient Fluxes in Two Distinct Bornean Lowland Tropical Rain Forests

Differential Impacts of Acacia Invasion on Nutrient Fluxes in Two Distinct Bornean Lowland Tropical Rain Forests

Chlorophyll fluorescence characteristics and H2O2 contents of Chinese tallow tree are dependent on population origin, nutrients and salinity

Climate Change Heightens the Threat Posed by the Invasive <i>Prosopis juliflora</i> (SW.) D.C. in the Jeddah Region, Saudi Arabia

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