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Are fine roots of both shrubs and perennial grasses able to occupy the upper soil layer? A case study in the arid Patagonian Monte with non-seasonal precipitation

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Abstract

We tested whether both shrubs and grasses are able to develop similar active fine-root systems in the upper soil layer of the arid Patagonian Monte ecosystem with non-seasonal precipitation. We selected in the field shrub patches consisting of one isolated modal plant of the dominant shrub Larrea divaricata Cav., grass patches formed by one or more bunches of the dominant grass Stipa tenuis Phil. (15 cm diameter), and mixed patches consisting of one individual of L. divaricata with bunches of S. tenuis under its canopy. We assessed the biomass, regrowth, and activity of fine roots (diameter <1.4 mm) of each species in the upper soil (50 cm depth) of each patch type at 3-month intervals. We also measured the N concentration in fine roots to estimate the relative contribution of each species to fine-root biomass of mixed patches. We injected Li+ in the soil as a chemical tracer to detect fine-root activity of each species in the upper soil. Fine-root biomass was higher in mixed patches than in grass patches while fine-root biomass in shrub patches did not differ from the two former. We did not find differences in fine-root regrowth among patch types. Li+ injection provided evidence of active fine roots of both species in the upper soil when it was wet. N concentration in fine roots suggested the prevalence of fine roots of L. divaricata in the upper soil of mixed patches. Our results support evidence of the ability of fine roots of both the shrub and the grass species to occupy the upper soil. These findings did not support the two-layer model (H Walter, Ecology of tropical and subtropical vegetation, Oliver and Boyd, Edinburgh, 1971) and provide evidence of this model would be less applicable to arid ecosystems with non-seasonal precipitation. Further, our results highlighted some issues deserving more research such as the outcome of belowground competition between neighboring plants of both contrasting life forms, the eventual limited fine-root carrying capacity of the upper soil, and differences in fine-root lifespan between species of both contrasting life form.

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Abbreviations

L:

Larrea divaricata patches

S:

Stipa tenuis patches

LS:

L. divaricata and S. tenuis patches

References

  • Baldi R, Albon SD, Elston D (2001) Guanacos and sheep: evidence for continuing competition in arid Patagonia. Oecologia 129:561–570

    Google Scholar 

  • Baldi R, Pelliza-Sbriller A, Elston D, Albon S (2004) High potential for competition between guanacos and sheep in Patagonia. J Wildl Manage 68:924–938

    Article  Google Scholar 

  • Becker GF, Busso CA, Montani T, Burgos MA, Flemmer AC, Toribio MB (1997) Effects of defoliating Stipa tenuis and Piptochaetium napostaense at different phenological stages: root growth. J Arid Environ 35:269–283

    Article  Google Scholar 

  • Bertiller MB, Beeskow AM, Coronato F (1991) Seasonal environmental variation and plant phenology in arid Patagonia (Argentina). J Arid Environ 21:1–11

    Google Scholar 

  • Bertiller MB, Ares JO, Bisigato AJ (2002) Multiscale indicators of land degradation in the Patagonian Monte, Argentina. Environ Manage 30:704–715

    Article  PubMed  Google Scholar 

  • Bisigato AJ, Bertiller MB (1997) Grazing effects on patchy dryland vegetation in northern Patagonia. J Arid Environ 36:639–653

    Article  Google Scholar 

  • Böhm W (1979) Methods of studying root systems. Springer Verlag, Berlin

    Google Scholar 

  • Cabrera AL (1976) Regiones fitogeográficas argentinas. Enciclopedia Argentina de Agricultura y Jardineria, 2nd edn. ACME, Buenos Aires, p 85

    Google Scholar 

  • Callaway RM, Pennings SC, Richards CL (2003) Phenotypic plasticity and interaction among plants. Ecology 84:1115–1128

    Article  Google Scholar 

  • Canadell J, Jackson RB, Ehleringer JR, Mooney HA, Sala OE, Schulze ED (1996) Maximum rooting depth of vegetation types at the global scale. Oecologia 108:583–595

    Article  Google Scholar 

  • Casper B, Jackson RB (1997) Plant competition underground. Ann Rev Ecolog Syst 28:545–570

    Article  Google Scholar 

  • Coombs J, Hind G, Leegood RC, Tieszen L, Vonshsk A (1985) Analytical techniques. In: Coombs J, Hall DO, Long SP, Scurlock JMO (eds) Techniques in bioproductivity and photosyntesis. Pergamon Press, Oxford, pp 219–228

    Google Scholar 

  • Coronato FR, Bertiller MB (1997) Climatic controls of soil moisture dynamics in an arid steppe of northern Patagonia, Argentina. Arid Soil Res Rehabil 11:277–288

    Google Scholar 

  • Corre-Hellou G, Crozat Y (2005) Assessment of root system dynamics of species grown in mixtures under field conditions using herbicide injection and N15 natural abundance methods: a case study with pea, barley and mustard. Plant Soil 276:177–192

    Article  CAS  Google Scholar 

  • del Valle HF (1998) Patagonian soils: a regional synthesis. Ecología Austral 8:103–123

    Google Scholar 

  • Gibbens RP, Lenz JM (2001) Root systems of some Chihuahuan desert plants. J Arid Environ 49:221–263

    Article  Google Scholar 

  • Gibson DJ (1988) The maintenance of plant and soil heterogeneity in dune grassland. J Ecol 76:497–508

    Article  Google Scholar 

  • Haase P, Pugnaire FI, Fernández EM, Puigdefábregas J, Clark SC, Incoll LD (1996) An investigation of rooting depth of the semiarid shrub Retama sphaerocarpa (L.) Boiss. by labeling of ground water with a chemical tracer. J Hydrol 177:23–31

    Article  CAS  Google Scholar 

  • Hipodonka MHT, Aranibar JN, Chirara C, Lihavha M, Macko SA (2003) Vertical distribution of grass and tree roots in arid ecosystems of Southern Africa: niche differentiation or competition? J Arid Environ 54:319–325

    Article  Google Scholar 

  • Jackson RB, Canadell J, Ehleringer JR, Mooney HA, Sala OE, Schulze ED (1996) A global analysis of root distributions for terrestrial biomes. Oecologia 108:389–411

    Article  Google Scholar 

  • Knoop WT, Walker BH (1985) Interactions of woody and herbaceous vegetation in southern Africa savanna. J Ecol 73:235–253

    Article  Google Scholar 

  • Kropfl AI, Cecchi GA, Villasuso NM, Distel RA (2002) The influence of Larrea divaricata on soil moisture and on water status and growth of Stipa tenuis in southern Argentina. J Arid Environ 52:29–35

    Google Scholar 

  • Lambers H, Chapin FS III, Pons T (1998) Biotic influences. In: Lambers H, Chapin FS III, Pons T (eds) Plant physiological ecology. Springer Verlag, New York, pp 378–412

    Google Scholar 

  • León RJC, Bran D, Collantes M, Paruelo JM, Soriano A (1998) Grandes unidades de vegetación de la Patagonia extraandina. Ecología Austral 8:125–144

    Google Scholar 

  • Montaña C, Cavagnaro B, Briones O (1995) Soil water use by co-existing shrubs and grasses in the southern Chihuahuan Desert, Mexico. J Arid Environ 31:1–13

    Article  Google Scholar 

  • Morello J (1958) La Provincia Fitogeográfica del Monte. Opera Lilloana II, Tucumán

    Google Scholar 

  • Norusis MJ (1997) SPSS advanced statistic 7.5. SPSS 579, Chicago

    Google Scholar 

  • Noy-Meir I (1973) Desert ecosystem: environment and producers. Ann Rev Ecolog Syst 4:25–52

    Article  Google Scholar 

  • Ogle K, Reynolds JF (2004) Plant responses to precipitation in desert ecosystems: integrating functional types, pulses, thresholds, and delays. Oecologia 141:282–294

    Article  PubMed  Google Scholar 

  • Ogle K, Wolpert RL, Reynolds JF (2004) Reconstructing plant root area and water uptake profiles. Ecology 85:1967–1978

    Article  Google Scholar 

  • Peek MS, Leffler AJ, Ivans CY, Ryel RJ, Caldwell MM (2005) Fine root distribution and persistence under field conditions of three co-occurring Great Basin species of different life form. New Phytol 165:171–180

    Article  PubMed  Google Scholar 

  • Peláez DV, Distel RA, Bóo RM, Elia OR, Mayor MD (1994) Water relations between shrubs and grasses in semi-arid Argentina. J Arid Environ 27:71–78

    Article  Google Scholar 

  • Pigliucci M (2001) In: Hopkins J (ed) Phenotypic plasticity: beyond nature and nurture (syntheses in ecology and evolution). University press, Baltimore, Maryland, USA

  • Reynolds HL, Hungate BA, Chapin FS III, D, Antonio CM (1997) Soil heterogeneity and plant competition in an annual grassland. Ecology 78:2076–2090

    Google Scholar 

  • Reynolds JF, Kemp PR, Tenhunen JD (2000) Effects of long-term rainfall variability on evapotranspiration and soil water distribution in the Chihuahuan desert: a modeling analysis. Plant Ecol 150:145–159

    Article  Google Scholar 

  • Reynolds JF, Kemp PR, Ogle K, Fernandez RJ (2004) Modifying the `pulse-reserve’ paradigm for deserts of North America: precipitation pulses, soil water, and plant responses. Oecologia 141:194–210

    Article  PubMed  Google Scholar 

  • Rodríguez MV (2002) Cambios en la estructura horizontal y vertical del canopeo y del sistema radical inducidos por disturbio pasturil en el NE del Chubut. Degree thesis. Universidad Nacional de la Patagonia San Juan Bosco, Argentina

    Google Scholar 

  • Rodríguez MV, Bertiller MB, Sain CL (2007) Spatial patterns and chemical characteristics of root biomass in ecosystems of the Patagonian Monte disturbed by grazing. J Arid Environ 70:137–151

    Article  Google Scholar 

  • Ryser P, Lambers IL (1995) Root and leaf attributes accounting for the performance of fast- and low-growing grasses at different nutrient supply. Plant Soil 170:251–265

    Article  CAS  Google Scholar 

  • Sala OE, Golluscio RA, Lauenroth WK, Soriano A (1989) Resource partitioning between shrubs and grasses in the Patagonian steppe. Oecologia 81:501–505

    Article  Google Scholar 

  • Schenk HJ, Jackson RB (2002) The global biogeography of roots. Ecol Monogr 72:311–328

    Article  Google Scholar 

  • Schwinning S, Davis K, Richardson L, Ehleringer JR (2002) Deuterium enriched irrigation indicates different forms of rain use in shrub/grass species of the Colorado Plateau. Oecologia 130:345–355

    Article  Google Scholar 

  • Soil Survey Staff (1998) National soils handbook. USDA-NRCS, Washington DC

    Google Scholar 

  • Soriano A (1950) La vegetación del Chubut. Rev Argent Agron 17:30–66

    Google Scholar 

  • Sun G, Coffin DP, Lauenroth WK (1997) Comparison of root distributions of species in North American grasslands using GIS. J Veg Sci 8:587–596

    Article  Google Scholar 

  • Súnico CA (1996) Geología del cuaternario y ciencia del suelo: Relaciones geomórficas-estratigráficas con suelos y paleosuelos. PhD diss. Universidad de Buenos Aires Press, Buenos Aires, p 226

    Google Scholar 

  • Van der Krift TAJ, Berendse F (2002) Root life spans of four grass species from habitats differing in nutrient availability. Funct Ecol 16:198–203

    Article  Google Scholar 

  • Walter H (1971) Ecology of tropical and subtropical vegetation. Oliver and Boyd, Edinburgh

    Google Scholar 

  • Whitford W (2002) Decomposition and nutrient cycling In: Whitford W (ed) Ecology of desert systems. Academic Press, pp 235–274

  • Wilcox C, Ferguson JW, Fernandez GCJ, Nowak RS (2004) Fine root growth dynamics of four Mojave Desert shrubs as related to soil moisture and microsite. J Arid Environ 56:129–148

    Article  Google Scholar 

Download references

Acknowledgements

This research was funded by PICTs 08-06027, 08-11131, 08-20454 BID 1201-1728/OC-AR of the National Agency for Scientific and Technological Promotion. M.V. Rodríguez fellowship is supported by CONICET (National Research Council of Argentina). We thank Gustavo Zamora, Dariana Vargas and Diego González Zevallos for their help in the fieldwork. We also acknowledge to Fermín Sarasa who allowed access to the study area in Estancia San Luis. Two anonymous reviewers made helpful comments on this manuscript.

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  1. Centro Nacional Patagónico (CONICET/CENPAT), Boulevard Brown s/n, 9120, Puerto Madryn, Chubut, Argentina

    M. Victoria Rodríguez, Mónica B. Bertiller & Alejandro Bisigato

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  1. M. Victoria Rodríguez
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  2. Mónica B. Bertiller
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  3. Alejandro Bisigato
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Correspondence to M. Victoria Rodríguez.

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Rodríguez, M.V., Bertiller, M.B. & Bisigato, A. Are fine roots of both shrubs and perennial grasses able to occupy the upper soil layer? A case study in the arid Patagonian Monte with non-seasonal precipitation. Plant Soil 300, 281–288 (2007). https://doi.org/10.1007/s11104-007-9415-1

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