Woody plant encroachment impacts on soil carbon and microbial processes: results from a hierarchical Bayesian analysis of soil incubation data

Cable, Jessica M.; Ogle, Kiona; Tyler, Anna P.; Pavao-Zuckerman, Mitchell; Huxman, Travis E.

doi:10.1007/s11104-008-9880-1

Cited by 41 publications

(50 citation statements)

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“…Microbial density tends to be higher near the surface in desert soils (Cable et al 2009), where nearly 90% of microbial activity occurs from 0 to 15 cm , and the near-surface microbes tend to be less temperature sensitive than those located deeper in the soil . Roots can extend into deep soil layers in deserts, but the majority of root biomass and respiration occurs within the top 50 cm of soil (Pregitzer et al 1998;Schenk and Jackson 2002a).…”

Section: Discussionmentioning

confidence: 99%

“…Roots and microbes likely have inherent differences in their capacities to grow and up-regulate metabolic processes in response to increased soil moisture at different time scales, and differences in the depth-distribution of roots and microbes may play a role due to variation in the depth of moisture infiltration after precipitation events. For example, microbial density tends to be higher near the soil surface (Cable et al 2009), while roots tend to growth to greater depth (Schwinning and Ehleringer 2001;Schenk and Jackson 2002a, b). Thus, deep soil moisture may stimulate relatively more root respiration and shallow moisture may stimulate relatively more microbial respiration .…”

Section: Effects Of Antecedent Conditions On Respirationmentioning

confidence: 99%

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The temperature responses of soil respiration in deserts: a seven desert synthesis

et al. 2010

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The temperature response of soil respiration in deserts is not well quantified. We evaluated the response of respiration to temperatures spanning 67°C from seven deserts across North America and Greenland. Deserts have similar respiration rates in dry soil at 20°C, and as expected, respiration rates are greater under wet conditions, rivaling rates observed for more mesic systems. However, deserts differ in their respiration rates under wet soil at 20°C and in the strength of the effect of current and antecedent soil moisture on the sensitivity and magnitude of respiration. Respiration increases with temperature below 30°C but declines for temperatures exceeding 35°C. Hot deserts have lower temperature sensitivity than cold deserts, and insensitive or negative temperature sensitivities were predicted under certain moisture conditions that differed among deserts. These results have implications for large-scale modeling efforts because we highlight the unique behavior of desert soil respiration relative to other systems. These behaviors include variable temperature responses and the importance of antecedent moisture conditions for soil respiration.Electronic supplementary material The online version of this article

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Section: Discussionmentioning

confidence: 99%

Section: Effects Of Antecedent Conditions On Respirationmentioning

confidence: 99%

The temperature responses of soil respiration in deserts: a seven desert synthesis

et al. 2010

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“…The variation of soil respiration and its temperature sensitivity are both strongly correlated with GPP at diurnal, seasonal and annual scales (Janssens et al, 2001;Tang et al, 2005;Sampson et al, 2007;Ma et al, 2007). An increasing number of studies show that this complex influence on plant growth rate also determines the microbial processing of carbon in the soil (Christopher and Lal, 2007;Fornara and Tilman, 2008;Cable et al, 2009). Chemical properties that promote high physiological activity and growth in plants and low lignin content also promote rapid decomposition (Hobbie, 1992).…”

Section: Figmentioning

confidence: 99%

Thermal adaptation of net ecosystem exchange

et al. 2011

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Abstract. Thermal adaptation of gross primary production and ecosystem respiration has been well documented over broad thermal gradients. However, no study has examinedCorrespondence to: W. Yuan (wenpingyuancn@yahoo.com) their interaction as a function of temperature, i.e. the thermal responses of net ecosystem exchange of carbon (NEE). In this study, we constructed temperature response curves of NEE against temperature using 380 site-years of eddy covariance data at 72 forest, grassland and shrubland ecosystems located at latitudes ranging from ∼29 • N to 64 • N. The response curves were used to define two critical temperatures:Published by Copernicus Publications on behalf of the European Geosciences Union. 1454 W. Yuan et al.: Thermal adaptation of net ecosystem exchange transition temperature (T b ) at which ecosystem transfer from carbon source to sink and optimal temperature (T o ) at which carbon uptake is maximized. T b was strongly correlated with annual mean air temperature. T o was strongly correlated with mean temperature during the net carbon uptake period across the study ecosystems. Our results imply that the net ecosystem exchange of carbon adapts to the temperature across the geographical range due to intrinsic connections between vegetation primary production and ecosystem respiration.

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“…Woody patches may affect seedling establishment in various ways, including 90 microclimate regulation, changes in water and nutrient availability, and the presence of symbiotic fungi, to mention a few (Vetaas, 1992;Nara and Hogetsu, 2004;Smith and Reed, 2008;Cable et al, 2009;Soliveres et al, 2011a;Anthelme et al, 2012). Their combined effect cannot be easily predicted, as interactions are common and complex.…”

Section: Introduction 30mentioning

confidence: 99%

Community attributes determine facilitation potential in a semi-arid steppe

Amat

Cortina

Zubcoff

2015

Perspectives in Plant Ecology, Evolution and Systematics

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Please cite this article as: Amat, B., Cortina, J., Zubcoff, J.J.,Community attributes determine facilitation potential in a semi-arid steppe., Perspectives in Plant Ecology, Evolution and Systematics (2014), http://dx.doi.org/10.1016/j.ppees. 2014.10.001 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. interactions. Conversely, the interaction with other co-occurring species has scarcely been addressed, despite the fact that the entire community may affect plant performance. We used woody vegetation patches as models to evaluate community facilitation in semi-arid steppes. 5We characterized biotic and physical attributes of 53 woody patches (patch size, litter accumulation, canopy density, vegetation cover, species number and identity, and phylogenetic distance), and soil fertility (organic C and total N), and evaluated their relative importance for the performance of seedlings of Pistacia lentiscus, a keystone woody species in western Mediterranean steppes. Seedlings were planted underneath the patches, and on 10 their northern and southern edges. Woody patches positively affected seedling survival but not seedling growth. Soil fertility was higher underneath the patches than elsewhere. Physical and biotic attributes of woody patches affected seedling survival, but these effects depended on microsite conditions. The composition of the community of small shrubs and perennial grasses growing underneath the patches controlled seedling performance. An increase in Stipa 15 tenacissima and a decrease in Brachypodium retusum increased the probability of survival.The cover of these species and other small shrubs, litter depth and community phylogenetic distance, were also related to seedling survival. Seedlings planted on the northern edge of the patches were mostly affected by attributes of the biotic community. These traits were of lesser importance in seedlings planted underneath and in the southern edge of patches, suggesting 20 that constraints to seedling establishment differed within the patches. Our study highlights the importance of taking into consideration community attributes over pair-wise interactions when evaluating the outcome of ecological interactions in multi-specific communities, as they

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Woody plant encroachment impacts on soil carbon and microbial processes: results from a hierarchical Bayesian analysis of soil incubation data

Cited by 41 publications

References 54 publications

The temperature responses of soil respiration in deserts: a seven desert synthesis

The temperature responses of soil respiration in deserts: a seven desert synthesis

Thermal adaptation of net ecosystem exchange

Community attributes determine facilitation potential in a semi-arid steppe

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