Conundrums in mixed woody–herbaceous plant systems

By J. House, S. Archer, D. Breshears, R. Scholes. 2003

389 citations recorded by the source corpus.

Subfields: Global and Planetary Change, Nature and Landscape Conservation

View Paper: https://www.semanticscholar.org/paper/3f292eeb0c6966221395941351bb190e82130686

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In Global and Planetary Change

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Citations in the corpus

Tree–grass coexistence in savannas revisited – insights from an examination of assumptions and mechanisms invoked in existing models (2004, methodology): “In particular, mechanisms permitting trees and grasses to coexist without one displacing the other, and factors determining the relative proportions of woody and herbaceous components across different savanna types remain unclear (Scholes & Archer 1997; House et al. 2003).”
SAVANNA RESPONSES TO FERAL BUFFALO IN KAKADU NATIONAL PARK, AUSTRALIA (2007, background): “The determinants of savanna tree:grass ratios have been much studied (Belsky 1990), most recently by Scholes and Archer (1997), Higgins et al. (2000), Jeltsch et al. (2000), House et al. (2003), van Langevelde et al. (2003), Sankaran et al. (2004, 2005), and Gardner (2006).”
Water and nutrients alter herbaceous competitive effects on tree seedlings in a semi‐arid savanna (2009, background): “These trends are likely to continue into the future (Dentener et al. 2006; Sheffield & Wood 2008), but the responses of woody vs. herbaceous plants to these changes are still uncertain (Scholes & Archer 1997; House et al. 2003; Sankaran et al. 2004, 2005).”
Herbaceous Vegetation Responses (1992–2004) to Restoration Treatments in a Ponderosa Pine Forest (2006, background): “Resource management and conservation practices are challenging in these mixed woody-herbaceous systems (House et al. 2003).”
An idealized model for tree–grass coexistence in savannas: the role of life stage structure and fire disturbances (2009, background): “The mechanisms behind tree–grass coexistence are not completely clear (Scholes & Archer1997; Jeltsch, Weber & Grimm 2000; House et al. 2003; Sankaran, Ratnam & Hanan 2004), and different explanations have been proposed.”
Distribution mapping of world grassland types (2014, background): “…which trees become a co-dominant and/or diagnostic part of the plant community concept, exerting disproportionate influence on competition for canopy cover and subsurface resources (White, 1983; Scholes & Hall, 1996; Scholes & Archer, 1997; House et al., 2003; Lock, 2006; Bucini & Hanan, 2007).”
A patch-dynamics approach to savanna dynamics and woody plant encroachment – Insights from an arid savanna (2006, background): “The scarcity of field data on multi-scale patterns in savanna might be the reason why recent reviews of tree–grass coexistence in savannas discuss the stability of savannas without explicit reference to spatio-temporal scales (Jeltsch et al., 2000; House et al., 2003; Sankaran et al., 2004).”
Impacts of shrub encroachment on ecosystem structure and functioning: towards a global synthesis (2011, background): “2002), and resulting reductions in pastoral productivity (House et al. 2003; Knapp et al. 2008).”
Tree–grass coexistence in the Brazilian cerrado: demographic consequences of environmental instability (2006, background): “As House et al. (2003) point out, in order to properly understand tree–grass coexistence, it is necessary to be able to evaluate emerging patterns and competing mechanisms using cross-site data at the global scale.”
Strategies for Savanna Restoration in the Southern Great Plains: Effects of Fire and Herbicides (2006, background): “However, grass production in a variety of shrub-encroached savannas is either increased or unaffected by light woody cover and only decreases when woody cover reaches a threshold (House et al. 2003; Ansley et al. 2004).”
Growth of N2‐fixing African savanna Acacia species is constrained by below‐ground competition with grass (2010, background): “However, many studies have shown that tree and grass roots do utilize the same soil layers (Scholes & Archer 1997; Higgins, Bond & Trollope 2000;House et al. 2003; Sankaran, Ratnam&Hanan 2004; Wang et al. 2007) and furthermore, tree seedlings are forced to compete with grasses while their roots occu”
Pattern-formation approach to modelling spatially extended ecosystems (2012, neutral): “…of savanna-like patterns with bistability of woody spot pattern and uniform herbaceous vegetation suggests the possible existence of a simple, general criterion for savanna-like patterns that is met by many of the mechanisms that have been proposed for such patterns (House et al., 2003).”
Native ungulates of diverse body sizes collectively regulate long‐term woody plant demography and structure of a semi‐arid savanna (2013, background): “Woody vegetation cover and biomass display marked spatial and temporal variation in savanna ecosystems at both local and regional scales (Scholes & Archer 1997; House et al. 2003; Sankaran et al. 2005).”
Are shrubs really a sign of declining ecosystem function? Disentangling the myths and truths of woody encroachment in Australia (2014, background): “However, our intention is not to restate the extensive body of literature on shrub encroachment currently in the public arena (see, for example, Noble 1997; Van Auken 2000; House et al. 2003; Archer 2009; Eldridge et al. 2011), nor the body of work on tree regrowth and clearing (e.”
Woody Species as Landscape Modulators and Their Effect on Biodiversity Patterns (2008, background): “By creating biomass patches in about 40% of terrestrial ecosystems (House et al. 2003), woody plants have significant environmental impacts (Perry 1998), changing the distribution of resources in space and time and consequently the distribution and abundance of organisms.”