Plant diversity and drought: The role of deep roots

Lindh, Magnus; Zhang, Lai; Falster, Daniel S.; Franklin, Oskar; Brännström, Åke

doi:10.1016/j.ecolmodel.2014.05.008

Cited by 38 publications

(19 citation statements)

References 29 publications

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“…However, in support of Hypothesis 2, the herbaceous and woody vegetation increased with the warming treatment ( Figure 1B). This increase in aboveground vegetation could be due to removal of temperature limitations (Hobbie et al 1999) or the ability to produce deeper roots to acquire water (Comas et al 2013;Lindh et al 2014). These increases in aboveground vegetation could also be an unintended consequence of the greenhouse warming treatment, such as decreased herbivory (Aronson and McNulty 2009).…”

Section: Discussionmentioning

confidence: 99%

Carbon budgets for soil and plants respond to long-term warming in an Alaskan boreal forest

2020

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The potential consequences of global warming for ecosystem carbon stocks are a major concern, particularly in high-latitude regions where soil carbon pools are especially large. Research on soil and plant carbon responses to warming are often based on short-term (<10 year) warming experiments. Furthermore, carbon budgets from boreal forests, which contain at least 10-20% of the global soil carbon pool, have shown mixed responses to warming. In this study, we measured carbon and nitrogen budgets (i.e., soil and understory vegetation carbon and nitrogen stocks) from a 13-year greenhouse warming experiment in an Alaskan boreal forest. Although there were no differences in total aboveground + belowground pools, the carbon in the moss biomass and in the soil organic layer significantly decreased with the warming treatment (-88.3% and-19.1%, respectively). Declines in moss biomass carbon may be a consequence of warming-associated drying, while shifts in the soil microbial community could be responsible for the decrease in carbon in the soil organic layer. Moreover, in response to warming, aboveground plant biomass carbon tended to increase while root biomass carbon tended to decrease, so carbon allocation may shift aboveground with warming. Overall these results suggest that permafrost-free boreal forests are susceptible to soil carbon loss with warming.

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Section: Discussionmentioning

confidence: 99%

Carbon budgets for soil and plants respond to long-term warming in an Alaskan boreal forest

2020

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“…This would in turn lead to reductions in height, percentage cover, and relative abundance of graminoids. Forbs and legumes, obviously owing to their taproots, can acquire water from much deeper soil layers than can graminoids, which facilitates their survival and growth in drought conditions (Collins & Bras, ; Lindh, Zhang, Falster, Franklin, & Brännström, ). Precipitation reduction significantly decreased the average height, percentage cover and relative abundance of perennials but significantly increased those of annuals, in accordance with studies in different grasslands reporting that water reduction favored annual plants (Cleland et al., ).…”

Section: Discussionmentioning

confidence: 99%

Precipitation reduction alters herbaceous community structure and composition in a savanna

Jin

Liu

et al. 2019

J Vegetation Science

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Questions In the changing climate scenario, the decline in precipitation is expected to alter water availability for plants, which in turn affects plant community structure and composition. The responses of community composition and structure to declines in precipitation are well documented in other biomes but remain understudied in water‐limited savannas. Location A savanna ecosystem in southwest China. Methods We used a four‐year (2014–2017) precipitation manipulation experiment to examine changes in herbaceous community composition and structure across the species, functional group and community levels under precipitation reduction. Results Precipitation reduction significantly decreased the average height and percentage cover of the herbaceous community, while increasing species richness and the Pielou evenness index. Precipitation reduction significantly decreased average height, percentage cover and relative abundance of graminoids and perennials, but increased those of forbs and annuals. Precipitation reduction prompted a shift in the dominant species of the herbaceous community towards Fimbristylis monostachya. Conclusions The results show that precipitation reduction changed the composition and structure of the herbaceous community of this savanna. Furthermore, they provide strong evidence that changes in herbaceous community structure and composition in response to the intensity and duration of precipitation reduction in this savanna exhibited relatively low thresholds, which suggests that the herbaceous community's response to a decline in precipitation was essentially nonlinear. These findings imply that even relatively small declines in precipitation may stimulate shifts in plant community structure and composition and affect the function and stability of savanna ecosystems.

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“…Los modelos climáticos mundiales han indicado una alta probabilidad de ocurrencias de sequía en las próximas décadas debido a los impactos de cambio climático causado por una liberación masiva de CO2; por lo tanto, el cambio climático en relación con el elevado nivel de CO2 y la sequía pueden afectar severamente el crecimiento de los cultivos (Yuhui, 2017), y las temperaturas y sequías extremas como consecuencia del cambio climático pueden amenazar la diversidad de las plantas (Lindh, Zhang, Falster, Franklin & Brännström, 2014). De esta manera, la producción global de cultivos está en riesgo debido al crecimiento de la población, preferencias alimentarias cambiantes y al cambio climático (McKersie, 2015).…”

Section: Introductionunclassified

Cosecha, reciclo y manejo eficiente del recurso hídrico como estrategia de adaptación al cambio climático por parte de AESMEVI

Bermudez

2018

Rev. SENNOVA

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Los productores de la Asociación Esperanzas para un Mejor Vivir - AESMEVI, vienen presentando problemas con la escasez de agua y un manejo ineficiente del recurso hídrico. Esta situación se ha venido agravando en las últimas décadas por efecto del cambio climático, pues, por el aumento de la temperatura y el aumento del CO2 ha generado cambios en los patrones de precipitación y ha contribuido con el aumento de eventos climáticos extremos. Frente a esta situación es necesario generar propuestas de un manejo eficiente del recurso hídrico. Es así que con AESMEVI se planteó un proyecto que contempló varias etapas como diagnóstico, ejecución y apropiación social del conocimiento para dar solución a la escasez de agua. Los resultados que se lograron fueron la construcción de 36 reservorios de capacidad de 20.000 litros, la construcción de 33 sistemas de reciclaje de aguas grises, la implementación de 33 sistemas de cosechas de aguas lluvias, la instalación de 36 sistemas de riego por microaspersión y se determinaron 36 láminas de riego para cultivos como durazno, aguacate, cítricos, guayaba y lulo. Recomendamos que estas soluciones se sigan trabajando con las comunidades, pues de este modo, garantizaremos el cuidado y protección del recurso hídrico para las generaciones futuras.

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Plant diversity and drought: The role of deep roots

Cited by 38 publications

References 29 publications

Carbon budgets for soil and plants respond to long-term warming in an Alaskan boreal forest

Carbon budgets for soil and plants respond to long-term warming in an Alaskan boreal forest

Precipitation reduction alters herbaceous community structure and composition in a savanna

Cosecha, reciclo y manejo eficiente del recurso hídrico como estrategia de adaptación al cambio climático por parte de AESMEVI

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