The magnitude of hydraulic redistribution by plant roots: a review and synthesis of empirical and modeling studies

Neumann, Rebecca B.; Cardon, Zoë G.

doi:10.1111/j.1469-8137.2012.04088.x

Cited by 289 publications

(250 citation statements)

References 110 publications

(329 reference statements)

Supporting

Mentioning

229

Contrasting

Unclassified

Order By: Relevance

“…This species might play a critical role in the performance of the mixed species plots by hydraulic redistribution of soil water resources. The roots of Tabebuia rosea can extract water from deep moist soil layer and might release water into shallower drier soil, thereby facilitating other associated species in the mixed species plots by increasing water availability [62,63]. The facilitation might have led to the higher increment of basal area as plots containing Tabebuia rosea were the ones with the highest increment in basal area [56].…”

Section: Different Traits In the Water Uptake Pattern Of Species Leadmentioning

confidence: 99%

Are Mixed Tropical Tree Plantations More Resistant to Drought than Monocultures?

Kunert

Cárdenas

2015

Forests

View full text Add to dashboard Cite

Tropical tree plantations usually consist of a single exotic fast growing species, but recent research describes positive effects on ecosystem functions from mixed tropical tree plantations. In this review, we present the current knowledge of drought resistance of tropical mixed species plantations and summarize preliminary evidence from a tree biodiversity experiment in Panama. Converting mono-specific stands into mixed ones may improve stand stability and might reduce increasing abiotic and biotic disturbances due to climate change. However, little is known about the extent to which tropical tree species or tropical tree communities can resist increasing disturbances in the short term, e.g., water limitations due to increasing dry season intensity or length, or about their resilience after such disturbances and their capacity to adapt to changing conditions in the long term. Studies relating drought resistance and resilience to community diversity are missing. Further, we highlight the urgent need for a multifactorial manipulative throughfall reduction experiment in tropical environments. The outcome of such studies would greatly assist the forestry sector in tropical regions to maintain highly productive and ecologically sound forest plantations in a changing climate.

show abstract

Section: Different Traits In the Water Uptake Pattern Of Species Leadmentioning

confidence: 99%

Are Mixed Tropical Tree Plantations More Resistant to Drought than Monocultures?

Kunert

Cárdenas

2015

Forests

View full text Add to dashboard Cite

show abstract

“…[89,90] Shared mycorrhizal networks P and S F Carbon, water, and nutrient uptake for a given species may increase if these resources are transferred to it via a shared mycorrhizal network with another species.…”

Section: Introductionmentioning

confidence: 99%

A Review of Processes Behind Diversity—Productivity Relationships in Forests

2016

View full text Add to dashboard Cite

Through complementarity interactions, mixedspecies forests can be more productive than monocultures, and this effect can increase with tree-species richness. However, this is not always the case. This review examines the processes and stand structural attributes that can influence diversity-productivity relationships (DPRs); how they influence resource availability, resource uptake, and resource-use efficiency; and also describes some important differences between tree-diversity versus grassland-diversity experiments. The size of the complementarity effects caused by these processes and stand structures varies along spatial and temporal gradients in resource availability and climate. These spatial and temporal dynamics have now been examined in many studies, and the general patterns are summarized using a simple framework; complementarity is predicted to increase as the availability of resource BX^declines (or climatic condition X becomes harsher) if the species interactions improve the availability, uptake, or use efficiency of resource X (or interactions improve climatic condition X). Importantly, this framework differs from the stress-gradient hypothesis to account for a wider range of inter-specific plant interactions (not only facilitation) by considering contrasting methods used to quantify species interactions while accounting for stand structure. In addition, complementarity (as opposed to facilitation) for a given species combination can increase as growing conditions improve in forests, contrary to predictions of the stressgradient hypothesis with regards to facilitation. This review indicates that while the effects of tree-species diversity on growth and other forest functions are now receiving a lot of attention, far less is known about the effects of structural diversity on growth or forest functioning. Direct measurements of the processes, as opposed to focusing mainly on growth responses, could greatly contribute to our understanding of structural diversity effects.

show abstract

“…In Warren et al's study of three Pacific Northwest forests [59], HR increased as the summer drought progressed, eventually reaching approximately 0.15 mm/day in the upper 60 cm. There would be several advantages to maintaining a relatively high water content in upper soil layers [61,62], some of which are illustrated by the close correlation between soil moisture and biotic variables in our study. Active microbial and mesofaunal populations, and therefore nutrient cycling processes, would be maintained longer into the drought season.…”

Section: Soil Water and Extended Samplingmentioning

confidence: 79%

Abiotic and Biotic Soil Characteristics in Old Growth Forests and Thinned or Unthinned Mature Stands in Three Regions of Oregon

et al. 2012

View full text Add to dashboard Cite

Abstract:We compared forest floor depth, soil organic matter, soil moisture, anaerobic mineralizable nitrogen (a measure of microbial biomass), denitrification potential, and soil/litter arthropod communities among old growth, unthinned mature stands, and thinned mature stands at nine sites (each with all three stand types) distributed among three regions of Oregon. Mineral soil measurements were restricted to the top 10 cm. Data were analyzed with both multivariate and univariate analyses of variance. Multivariate analyses were conducted with and without soil mesofauna or forest floor mesofauna, as data for those taxa were not collected on some sites. In multivariate analysis with soil mesofauna, the model giving the strongest separation among stand types (P = 0.019) included abundance and richness of soil mesofauna and anaerobic mineralizable nitrogen. The best model with forest floor mesofauna (P = 0.010) included anaerobic mineralizable nitrogen, soil moisture content, and richness of forest floor mesofauna. Old growth had the highest mean values for all variables, and in both models differed significantly from mature stands, while the latter did not differ. Old growth also averaged higher percent soil organic matter, and analysis including that variable was significant but not as strong as without it. Results of the multivariate analyses were mostly supported by univariate analyses, but there were some differences. In univariate analysis, the difference in percent soil organic matter between old growth and thinned mature was due to a single site in which the old growth had exceptionally high soil organic matter; without that site, percent soil organic matter did OPEN ACCESSDiversity 2012, 4 335 not differ between old growth and thinned mature, and a multivariate model containing soil organic matter was not statistically significant. In univariate analyses soil mesofauna had to be compared nonparametrically (because of heavy left-tails) and differed only in the Siskiyou Mountains, where they were most abundant and species rich in old growth forests. Species richness of mineral soil mesofauna correlated significantly (+) with percent soil organic matter and soil moisture, while richness of forest floor mesofauna correlated (+) with depth of the forest floor. Composition of forest floor and soil mesofauna suggest the two groups represent a single community. Soil moisture correlated highly with percent soil organic matter, with no evidence for drying in sites that were sampled relatively late in the summer drought, suggesting losses of surface soil moisture were at least partially replaced by hydraulic lift (which has been demonstrated in other forests of the region).

show abstract

The magnitude of hydraulic redistribution by plant roots: a review and synthesis of empirical and modeling studies

Cited by 289 publications

References 110 publications

Are Mixed Tropical Tree Plantations More Resistant to Drought than Monocultures?

Are Mixed Tropical Tree Plantations More Resistant to Drought than Monocultures?

A Review of Processes Behind Diversity—Productivity Relationships in Forests

Abiotic and Biotic Soil Characteristics in Old Growth Forests and Thinned or Unthinned Mature Stands in Three Regions of Oregon

Contact Info

Product

Resources

About