Abiotic Factor

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Thomas Scholten - One of the best experts on this subject based on the ideXlab platform.

  • rule based analysis of throughfall kinetic energy to evaluate biotic and Abiotic Factor thresholds to mitigate erosive power
    Progress in Physical Geography, 2016
    Co-Authors: Philipp Goebes, Karsten Schmidt, Steffen Seitz, Felix Stumpf, Thomas Scholten
    Abstract:

    Below vegetation, throughfall kinetic energy (TKE) is an important Factor to express the potential of rainfall to detach soil particles and thus for predicting soil erosion rates. TKE is affected b...

  • species specific effects on throughfall kinetic energy in subtropical forest plantations are related to leaf traits and tree architecture
    PLOS ONE, 2015
    Co-Authors: Philipp Goebes, Steffen Seitz, Helge Bruelheide, Werner Hardtle, Wenzel Krober, Peter Kuhn, Ying Li, Goddert Von Oheimb, Thomas Scholten
    Abstract:

    Soil erosion is a key threat to many ecosystems, especially in subtropical China where high erosion rates occur. While the mechanisms that induce soil erosion on agricultural land are well understood, soil erosion processes in forests have rarely been studied. Throughfall kinetic energy (TKE) is influenced in manifold ways and often determined by the tree’s leaf and architectural traits. We investigated the role of species identity in mono-specific stands on TKE by asking to what extent TKE is species-specific and which leaf and architectural traits account for variation in TKE. We measured TKE of 11 different tree species planted in monocultures in a biodiversity-ecosystem-functioning experiment in subtropical China, using sand-filled splash cups during five natural rainfall events in summer 2013. In addition, 14 leaf and tree architectural traits were measured and linked to TKE. Our results showed that TKE was highly species-specific. Highest TKE was found below Choerospondias axillaris and Sapindus saponaria, while Schima superba showed lowest TKE. These species-specific effects were mediated by leaf habit, leaf area (LA), leaf pinnation, leaf margin, stem diameter at ground level (GD), crown base height (CBH), tree height, number of branches and leaf area index (LAI) as biotic Factors and throughfall as Abiotic Factor. Among these, leaf habit, tree height and LA showed the highest effect sizes on TKE and can be considered as major drivers of TKE. TKE was positively influenced by LA, GD, CBH, tree height, LAI, and throughfall amount while it was negatively influenced by the number of branches. TKE was lower in evergreen, simple leaved and dentate leaved than in deciduous, pinnated or entire leaved species. Our results clearly showed that soil erosion in forest plantations can be mitigated by the appropriate choice of tree species.

Philipp Goebes - One of the best experts on this subject based on the ideXlab platform.

  • rule based analysis of throughfall kinetic energy to evaluate biotic and Abiotic Factor thresholds to mitigate erosive power
    Progress in Physical Geography, 2016
    Co-Authors: Philipp Goebes, Karsten Schmidt, Steffen Seitz, Felix Stumpf, Thomas Scholten
    Abstract:

    Below vegetation, throughfall kinetic energy (TKE) is an important Factor to express the potential of rainfall to detach soil particles and thus for predicting soil erosion rates. TKE is affected b...

  • species specific effects on throughfall kinetic energy in subtropical forest plantations are related to leaf traits and tree architecture
    PLOS ONE, 2015
    Co-Authors: Philipp Goebes, Steffen Seitz, Helge Bruelheide, Werner Hardtle, Wenzel Krober, Peter Kuhn, Ying Li, Goddert Von Oheimb, Thomas Scholten
    Abstract:

    Soil erosion is a key threat to many ecosystems, especially in subtropical China where high erosion rates occur. While the mechanisms that induce soil erosion on agricultural land are well understood, soil erosion processes in forests have rarely been studied. Throughfall kinetic energy (TKE) is influenced in manifold ways and often determined by the tree’s leaf and architectural traits. We investigated the role of species identity in mono-specific stands on TKE by asking to what extent TKE is species-specific and which leaf and architectural traits account for variation in TKE. We measured TKE of 11 different tree species planted in monocultures in a biodiversity-ecosystem-functioning experiment in subtropical China, using sand-filled splash cups during five natural rainfall events in summer 2013. In addition, 14 leaf and tree architectural traits were measured and linked to TKE. Our results showed that TKE was highly species-specific. Highest TKE was found below Choerospondias axillaris and Sapindus saponaria, while Schima superba showed lowest TKE. These species-specific effects were mediated by leaf habit, leaf area (LA), leaf pinnation, leaf margin, stem diameter at ground level (GD), crown base height (CBH), tree height, number of branches and leaf area index (LAI) as biotic Factors and throughfall as Abiotic Factor. Among these, leaf habit, tree height and LA showed the highest effect sizes on TKE and can be considered as major drivers of TKE. TKE was positively influenced by LA, GD, CBH, tree height, LAI, and throughfall amount while it was negatively influenced by the number of branches. TKE was lower in evergreen, simple leaved and dentate leaved than in deciduous, pinnated or entire leaved species. Our results clearly showed that soil erosion in forest plantations can be mitigated by the appropriate choice of tree species.

Steffen Seitz - One of the best experts on this subject based on the ideXlab platform.

  • rule based analysis of throughfall kinetic energy to evaluate biotic and Abiotic Factor thresholds to mitigate erosive power
    Progress in Physical Geography, 2016
    Co-Authors: Philipp Goebes, Karsten Schmidt, Steffen Seitz, Felix Stumpf, Thomas Scholten
    Abstract:

    Below vegetation, throughfall kinetic energy (TKE) is an important Factor to express the potential of rainfall to detach soil particles and thus for predicting soil erosion rates. TKE is affected b...

  • species specific effects on throughfall kinetic energy in subtropical forest plantations are related to leaf traits and tree architecture
    PLOS ONE, 2015
    Co-Authors: Philipp Goebes, Steffen Seitz, Helge Bruelheide, Werner Hardtle, Wenzel Krober, Peter Kuhn, Ying Li, Goddert Von Oheimb, Thomas Scholten
    Abstract:

    Soil erosion is a key threat to many ecosystems, especially in subtropical China where high erosion rates occur. While the mechanisms that induce soil erosion on agricultural land are well understood, soil erosion processes in forests have rarely been studied. Throughfall kinetic energy (TKE) is influenced in manifold ways and often determined by the tree’s leaf and architectural traits. We investigated the role of species identity in mono-specific stands on TKE by asking to what extent TKE is species-specific and which leaf and architectural traits account for variation in TKE. We measured TKE of 11 different tree species planted in monocultures in a biodiversity-ecosystem-functioning experiment in subtropical China, using sand-filled splash cups during five natural rainfall events in summer 2013. In addition, 14 leaf and tree architectural traits were measured and linked to TKE. Our results showed that TKE was highly species-specific. Highest TKE was found below Choerospondias axillaris and Sapindus saponaria, while Schima superba showed lowest TKE. These species-specific effects were mediated by leaf habit, leaf area (LA), leaf pinnation, leaf margin, stem diameter at ground level (GD), crown base height (CBH), tree height, number of branches and leaf area index (LAI) as biotic Factors and throughfall as Abiotic Factor. Among these, leaf habit, tree height and LA showed the highest effect sizes on TKE and can be considered as major drivers of TKE. TKE was positively influenced by LA, GD, CBH, tree height, LAI, and throughfall amount while it was negatively influenced by the number of branches. TKE was lower in evergreen, simple leaved and dentate leaved than in deciduous, pinnated or entire leaved species. Our results clearly showed that soil erosion in forest plantations can be mitigated by the appropriate choice of tree species.

Richard Michael Grazul - One of the best experts on this subject based on the ideXlab platform.

  • Water deficit modulates growth, morphology, and the essential oil profile in Lippia alba L. (Verbenaceae) grown in vitro
    Plant Cell Tissue and Organ Culture (PCTOC), 2020
    Co-Authors: Kamila Motta Castro, Diego Silva Batista, Tatiane Dulcineia Silva, Evandro Alexandre Fortini, Sérgio Heitor Sousa Felipe, Amanda Mendes Fernandes, Raysa Mayara Jesus Sousa, Laís Stehling Queiroz Nascimento, Victória Rabelo Campos, Richard Michael Grazul
    Abstract:

    Lippia alba (Miller) N.E. Brown is an aromatic plant species of great economic importance due to the medicinal properties of its essential oils, which provide stress relief, respiratory and gastrointestinal disease control, and anti-inflammatory and natural sedative effects. The plant is also effective in biological control against various pathogens and in food preservation. Water deficit is the most critical Abiotic Factor limiting plant growth and morpho-physiological development, as well as production of secondary metabolism compounds. The objective of this work was to evaluate the effect of water deficit on growth, photosynthesis, essential oil profile, and the expression of genes related to the biosynthesis of these compounds in L. alba grown in vitro. Nodal segments were cultured on medium supplemented with 0, 1, 2, and 3% (w/v) polyethylene glycol for 45 days. Water stress had a negative effect on primary metabolism indicators, such as growth, leaf area, and photosynthetic rate; but a positive effect on amino acid and total protein content. Similarly, secondary metabolism exhibited an increase in linalool but a reduction in germacrene levels under water deficit. These findings provide a deeper understanding of how water deficit affects primary and secondary metabolism in L. alba , showing the potential of this medicinal species to adapt to soils with low water availability, while still being able to grow and synthesize essential oils. Water deficit significantly alters the percentage of the essential oil components linalool and germacrene in Lippia alba plants grown in vitro.

Karsten Schmidt - One of the best experts on this subject based on the ideXlab platform.