Phenological and Temperature Controls on the Temporal Non-Structural Carbohydrate Dynamics of Populus grandidentata and Quercus rubra

Gough, Christopher M.; Flower, Charles E.; Vogel, Christoph S.

doi:10.3390/f1010065

Cited by 32 publications

(41 citation statements)

References 59 publications

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“…These support modeling efforts that predict that a 1-7 • C increase in temperature will cause a positive curvilinear response in tissue non-structural carbohydrate concentration resulting in an approximate 1% increase in tissue non-structural carbohydrate concentration for every 1 • C rise (Gough et al, 2010). In general, warming increases the photosynthetic rate by increasing enzyme activities, but our results show that plants slowed the degradation of chlorophyll while increasing photosynthesis and non-structural carbohydrate accumulation.…”

Section: Mechanisms Controlling Nutrient and Carbon Dynamicssupporting

confidence: 57%

“…The effects of TNC on all of the above processes suggest that autumn carbohydrate reserves could determine regime shifts by altering species growth and reproduction patterns in the following growing season. Although recent studies have reported significant increases in photosynthetic capacity with elevated autumn temperatures (Piao et al, 2008;Wang et al, 2008) as well as temperature effects on photosynthate allocation and accumulation of carbohydrate (Busch et al, 2007;Gough et al, 2010), studies on root TNC responses of multiple species and functional groups to climate warming are mostly lacking.…”

Section: Introductionmentioning

confidence: 99%

“…It has been suggested that the extended growing season with long-term warming in temperature-limited systems will significantly increase net primary productivity through enhanced photosynthesis capacity (Piao et al, 2008;Wang et al, 2008;Xu et al, 2012), particularly of strong competitors, defining new thresholds of resource use and allocation at all relevant levels of the ecological organization (Silva and Anand, 2013). Shifts in facilitation and competition mechanisms in combination with the maintenance of high photosynthesis capacity are also expected to result in accumulation of more below-ground photosynthetic products as non-structural carbohydrate (Gough et al, 2010), which should lead to lasting changes in ecosystem structure and function.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Climate warming alters nitrogen dynamics and total non-structural carbohydrate accumulations of perennial herbs of distinctive functional groups during the plant senescence in autumn in an alpine meadow of the Tibetan Plateau, China

Shi

Silva

Zhang

et al. 2015

Agricultural and Forest Meteorology

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Section: Mechanisms Controlling Nutrient and Carbon Dynamicssupporting

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Climate warming alters nitrogen dynamics and total non-structural carbohydrate accumulations of perennial herbs of distinctive functional groups during the plant senescence in autumn in an alpine meadow of the Tibetan Plateau, China

Shi

Silva

Zhang

et al. 2015

Agricultural and Forest Meteorology

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“…This high resilience of the C cycle was attributed to high N retention and rapid reallocation of this limiting resource in support of new leaf area production as aspen and birch declined (Nave et al, 2011). Decadal records of tree growth indicate that resilience to age-related declines in NPP is highest where a diversity of canopy tree species is present because later successional species rapidly compensate for the declining growth of early successional species (Gough et al, 2010b). Investigators are also finding that resilience of forest production to disturbance is dependent upon canopy structural reorganizations that enhance C uptake by increasing light use efficiency (Hardiman et al, 2011; and by hydrodynamic responses that increase postdisturbance water use efficiency in some species (Matheny et al, 2015).…”

Section: The Forest Accelerated Succession Experimentsmentioning

confidence: 99%

“…In the US upper Midwest and northeast, low-severity disturbance is increasing in frequency and extent in regional forests, which have regrown following stand-replacing disturbances over a century ago (Frelich and Reich, 1995). The resulting cohort of fast-growing, deciduous trees is now past maturity and beginning to decline, while longer-lived species representation is increasing (Gough et al, 2010b). At the same time, forest disturbances in the region are transitioning away from severe events that historically caused complete stand replacement towards more subtle disturbances that result in only partial canopy defoliation or loss of selected species (Pregitzer and Euskirchen, 2004;Williams et al, 2012;Birdsey et al, 2006).…”

Section: B Bond-lamberty Et Al: Moderate Forest Disturbance As a Stmentioning

confidence: 99%

Moderate forest disturbance as a stringent test for gap and big-leaf models

et al. 2015

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Abstract. Disturbance-induced tree mortality is a key factor regulating the carbon balance of a forest, but tree mortality and its subsequent effects are poorly represented processes in terrestrial ecosystem models. It is thus unclear whether models can robustly simulate moderate (non-catastrophic) disturbances, which tend to increase biological and structural complexity and are increasingly common in aging US forests. We tested whether three forest ecosystem models -Biome-BGC (BioGeochemical Cycles), a classic big-leaf model, and the ZELIG and ED (Ecosystem Demography) gap-oriented models -could reproduce the resilience to moderate disturbance observed in an experimentally manipulated forest (the Forest Accelerated Succession Experiment in northern Michigan, USA, in which 38 % of canopy dominants were stem girdled and compared to control plots). Each model was parameterized, spun up, and disturbed following similar protocols and run for 5 years post-disturbance. The models replicated observed declines in aboveground biomass well. Biome-BGC captured the timing and rebound of observed leaf area index (LAI), while ZELIG and ED correctly estimated the magnitude of LAI decline. None of the models fully captured the observed post-disturbance C fluxes, in particular gross primary production or net primary production (NPP). Biome-BGC NPP was correctly resilient but for the wrong reasons, and could not match the absolute observational values. ZELIG and ED, in contrast, exhibited large, unobserved drops in NPP and net ecosystem production. The biological mechanisms proposed to explain the observed rapid resilience of the C cycle are typically not incorporated by these or other models. It is thus an open question whether most ecosystem models will simulate correctly the gradual and less extensive tree mortality characteristic of moderate disturbances.

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Ecohydrological effects of management on subalpine grasslands: From local to catchment scale

et al. 2014

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[1] Grassland and pastures are important land uses in subalpine and alpine environments. They are typically subjected to management practices that can change the biophysical structure of the canopy through defoliation and can alter soil hydraulic properties. These modifications have the potential to impact hydrological and energy fluxes as well as the primary productivity of grasslands. We investigate how a series of management practices, such as grass cut, grazing, and the consequent soil compaction due to treading by animals are affecting water resources, flood generation, and grassland productivity in a subalpine region. Results are obtained using a mechanistic ecohydrological model, Tethys-Chloris. The model is first confirmed using energy, water, and carbon fluxes measured at three eddy covariance stations over grasslands in Switzerland and discharge measured in a small experimental catchment. A series of virtual experiments are then designed to elucidate the importance of various management scenarios at the plot and catchment scales. Results show that only severe management actions such as low grass cuts or heavy grazing are able to influence considerably the long-term hydrological behavior. Moderate management practices are typically unable to modify the system response in terms of energy and water fluxes. An important short-term effect is represented by animal-induced soil compaction that can reduce infiltration capacity leading to peak flow considerably higher than in undisturbed conditions. The productivity of vegetation in absence of nutrient limitation is considerably affected by the different management scenarios with tolerable disturbances that lead to higher aboveground net primary production.Citation: Fatichi, S., M. J. Zeeman, J. Fuhrer, and P. Burlando (2014), Ecohydrological effects of management on subalpine grasslands: From local to catchment scale, Water Resour.

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Phenological and Temperature Controls on the Temporal Non-Structural Carbohydrate Dynamics of Populus grandidentata and Quercus rubra

Cited by 32 publications

References 59 publications

Climate warming alters nitrogen dynamics and total non-structural carbohydrate accumulations of perennial herbs of distinctive functional groups during the plant senescence in autumn in an alpine meadow of the Tibetan Plateau, China

Climate warming alters nitrogen dynamics and total non-structural carbohydrate accumulations of perennial herbs of distinctive functional groups during the plant senescence in autumn in an alpine meadow of the Tibetan Plateau, China

Moderate forest disturbance as a stringent test for gap and big-leaf models

Ecohydrological effects of management on subalpine grasslands: From local to catchment scale

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