Flooding Reverted Grazing Effects on Plant Community Structure in Mesocosms of Lowland Grassland

Insausti, Pedro; Chaneton, Enrique J.; Soriano, A.

doi:10.2307/3546721

Cited by 46 publications

(43 citation statements)

References 49 publications

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“…This response and the higher proportion of leaf biomass located above water (parameter directly associated to carbon fixation), seem to be important traits that could help to explain the maintenance of above-ground biomass in L. glaber when growing under flooding conditions. Flooding determined a higher total biomass per mesocosms and a shift of the vertical distribution of the biomass to the upper layer of the canopy (Table 1), mainly explained by the advance of the graminoid guild (sensu Insausti et al, 1999). In this scenario, the total aboveground biomass of the L. glaber plants was not decreased as a result of flooding.…”

Section: Discussionmentioning

confidence: 76%

“…Bip. (see Insausti et al, 1999 for a detailed description of this grassland community). During the experiment, containers were periodically rotated and provided with holes that allowed water to drain freely.…”

Section: Plant Materials and Experimental Designmentioning

confidence: 99%

“…During the experiment, containers were periodically rotated and provided with holes that allowed water to drain freely. The use of mesocosms helped overcome the problems of flooding simulation in field conditions and of keeping control during natural flooding (Fraser and Keddy, 1997;Grimoldi et al, 1999;Insausti et al, 1999). In addition, the use of mesocosms allowed us to register the responses of the target species in presence of their usual neighbors .…”

Section: Plant Materials and Experimental Designmentioning

confidence: 99%

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Physiological and Anatomical Basis of Differential Tolerance to Soil Flooding of Lotus corniculatus L. and Lotus glaber Mill

et al. 2005

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Lotus corniculatus L. and Lotus glaber Mill. are warm-season legume species adapted to many kinds of environmental stress, including flooding conditions, whereas other popular forage legumes, like alfalfa or white clover, cannot thrive. This study evaluates the relationship between root aerenchyma, water relations and leaf gas exchange and the differential tolerance to soil flooding of L. corniculatus and L. glaber. Adult plants of these species, established independently in grasslands mesocosms, were subjected to 40 days of early spring flooding at a water depth of 6 cm. Both species presented constitutive aerenchyma tissue in the roots. Under flooding conditions, this parameter was 26.2% in L. glaber and 15.3% in L. corniculatus. In addition, flooded plants of L. glaber presented a leaf biomass 47.5% higher above water while L. corniculatus showed a leaf biomass 59.6% lower in the same layer, in comparison to control plants. Flooded plants of L. glaber maintained the stomatal conductance (g s ) and transpiration rate (E) for 25 days, although these parameters reduce slightly to 40À60% in comparison to controls after 40 days of flooding. In this species, a reduction in photosynthesis (A) in flooding conditions was detected only on the last day of measurement. In L. corniculatus, the same parameters (g s , E and A) were affected by flooding since day 18 of treatment, and values reached 25À40% in comparison to control plants after 40 days of flooding. Flooding did not affect above-ground biomass in L. glaber; while in L. corniculatus, above-ground biomass was 35% lower than in control plants. Our results confirmed that L. glaber is more able to cope with flooding stress than L. corniculatus, even in the presence of natural competitors. On the whole, this experiment provides information that can aid in the identification of anatomical and physiological parameters associated with flood-tolerance in this forage legume species, with economic potential for the agricultural areas subject to periodic flooding.

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Section: Discussionmentioning

confidence: 76%

Section: Plant Materials and Experimental Designmentioning

confidence: 99%

Section: Plant Materials and Experimental Designmentioning

confidence: 99%

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Physiological and Anatomical Basis of Differential Tolerance to Soil Flooding of Lotus corniculatus L. and Lotus glaber Mill

et al. 2005

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“…This measurement can estimate whether the soil is fully or partly aerobic or in anaerobic condition. Although flooding typically causes a reduction in the abundance of flood-sensitive plant species, it can also promote N uptake and biomass growth in flood-tolerant species to exploit resources that otherwise would be shared with non-tolerant competitors [32,33]. The three forage species in our study may have the capacity for regulating leaf water and carbon relations under highly changing atmospheric conditions.…”

Section: Open Accessmentioning

confidence: 91%

Nitrogen recovery and agronomic efficiency of forages with nitrogen fertilization under flooded condition

Sigua¹,

Williams²,

Chase³

et al. 2013

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“…For plants to be classified as tolerant to waterlogging can still maintain their growth rate in such condition [15][16][17][18]. Although flooding typically causes a reduction in the abundance of flood-sensitive plant species, it can also promote biomass growth in flood-tolerant species to exploit resources that otherwise would be shared with non-tolerant competitors [19,20]. Voesenek et al [12] suggested that hormonal effects were involved in growth response for plants under waterlogged conditions because photosynthesis rates could be enhanced by increased leaf temperature at higher air vapor pressure deficit in most C 4 grasses (e.g., bahiagrass) while differrences in photosynthetic activities between flooded and control plants may be accounted for by the differences in stomatal conductance.…”

Section: Effects On Dry Matter Yield 24 Redox Potential Measurementsmentioning

confidence: 99%

Yield and uptake of bahiagrass under flooded environment as affected by nitrogen fertilization

Sigua¹,

Williams²,

Chase³

et al. 2012

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Flooding Reverted Grazing Effects on Plant Community Structure in Mesocosms of Lowland Grassland

Cited by 46 publications

References 49 publications

Physiological and Anatomical Basis of Differential Tolerance to Soil Flooding of Lotus corniculatus L. and Lotus glaber Mill

Physiological and Anatomical Basis of Differential Tolerance to Soil Flooding of Lotus corniculatus L. and Lotus glaber Mill

Nitrogen recovery and agronomic efficiency of forages with nitrogen fertilization under flooded condition

Yield and uptake of bahiagrass under flooded environment as affected by nitrogen fertilization

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