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2014 | 62 | 2 |
Tytuł artykułu

Distribution of the nurse species Pycnophyllum molle J.Remy and P. weberbaueri Muschl. in the Andean dry puna (Arequipa district - Southern Peru): role of topographic-soil variability and disturbance regime

Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The dry Puna is the widest pastoral ecosystem of the tropical alpine Andes, characterized by harsh environmental conditions (long and intense drought stress periods and unfertile soils) and grazed by wild and domestic camelids. In these conditions, facilitation is of key importance in plant diversity conservation. Indeed, facilitation is a positive plant-plant interaction by which the so called nurse species provide environmental amelioration of harsh conditions and/or refuge to other plants (beneficiary species), which otherwise might fail to establish. The research aims were to understand which ecological variables affect the distribution of the potential nurse cushion species Pycnophyllum molle J. Rémy and P. weberbaueri Muschl., and if these species are affected by grazing disturbance. The study area (4000–4900 m a.s.l.) is located in the southern Peruvian Andes. Data of species cover, topographic and soil features, besides type of disturbance were collected along transects. We used canonical redundancy analysis to understand the relations between the cover of the two Pycnophyllum species and the above mentioned constraining variables. Results indicate that both the Pycnophyllum species grow on sandy loam, moderately acid soils, with low organic matter and very poor nitrogen content, and avoid high disturbance intensities. P. molle is more sensitive than P. weberbaueri to disturbance, and grows on relatively more fertile soils, also at higher altitudes and on steeper slopes characterized by greater rockiness.
Wydawca
-
Rocznik
Tom
62
Numer
2
Opis fizyczny
p.385-390,fig.,ref.
Twórcy
autor
  • School of Environmental Sciences, University of Camerino, via Pontoni 5, IT-62032 Camerino (MC), Italy
  • School of Environmental Sciences, University of Camerino, via Pontoni 5, IT-62032 Camerino (MC), Italy
  • School of Environmental Sciences, University of Camerino, via Pontoni 5, IT-62032 Camerino (MC), Italy
Bibliografia
  • Catorci A., Cesaretti S., Velasquez J.L., Zeballos H. 2011 – Plant-plant spatial interactions in the dry Puna (southern Peruvian Andes) – Alp. Bot. 121: 113–121.
  • Catorci A., Cesaretti S., Velasquez J.L., Burrascano S., Zeballos H. 2013 – Management type affects composition and facilitative processes in altoandine dry grassland – Acta Oceol. 52: 19–28.
  • Catorci A., Tardella F.M., Cesaretti S., Bertellotti M., Santolini R. 2012 – The interplay among grazing history, plant-plant spatial interactions and species traits affects vegetation recovery processes in Patagonian steppe – Community Ecol. 13: 253–263.
  • Cavieres L.A., Badano E.I., Sierra-Almeida A., Molina-Montenegro M.A. 2007 – Microclimatic modifications of cushion plants and their consequences for seedling survival of native and non-native herbaceous species in the high Andes of central Chile – Arct. Antarct. Alp. Res. 39: 229–236.
  • Genin D., Alzérreca H. 2006 – Campos nativos de pastoreo y producción animal en la puna semiárida y árida andina [Native grazing fields and livestock production in semi-arid and arid Andean highlands] – Sci. Chang. Planet./Sécheresse 17: 265–274.
  • Hirzel A., Guisan A. 2002 – Which is the optimal sampling strategy for habitat suitability modelling – Ecol. Model. 157: 331–341
  • Howard K.S.C., Eldridge D.J., Soliveres S. 2012 – Positive effects of shrubs on plant species diversity do not change along a gradient in grazing pressure in an arid shrubland – Basic Appl. Ecol. 13: 159–168.
  • Kleier C., Rundel P.W. 2004 – Microsite requirements, population structure and growth of the cushion plant Azorella compacta in the tropical Chilean Andes – Austr. Ecol. 29: 461–470.
  • Kleier C., Rundel P. 2009 – Energy balance and temperature relations of Azorella compacta, a high-elevation cushion plant of the central Andes – Plant Biol. 11: 351–358.
  • Lambrinos J.G., Kleier C.C., Rundel P.W. 2006 – Plant community variation across a puna landscape in the Chilean Andes – Rev. Chil. Hist. Nat. 79: 233–243.
  • Lara R.R., Alzérreca A.H. 1976 – Forrajeras nativas del Altiplano [Native forages of the Highplains] – Boletín Experimental Ministerio de Asuntos Campesinos y Agropecuarios 57, La Paz (Bolivia), 20 pp.
  • Legendre P., Gallagher E.D. 2001 – Ecologically meaningful transformations for ordination of species data – Oecologia, 129: 271–280
  • Maestre F.T., Valladares F., Reynolds J.F. 2005 – Is the change of plant-plant interactions with abiotic stress predictable? A meta-analysis of field results in arid environments – J. Ecol. 93: 748–757.
  • Monteiro J.A.F., Hiltbrunner E., Körner C. 2011 – Functional morphology and microclimate of Festuca orthophylla, the dominant tall tussock grass in the Andean Altiplano – Flora, 206: 387–396.
  • Montenegro B., Zúñiga S., Zeballos H. 2010 – Climatología de la Reserva Nacional Salinas y Aguada Blanca, suroeste del Perú [Climatology of Salinas and Aguada Blanca National Reserve, south-west Peru] (In: Diversidad biológica de la Reserva Nacional de Salinas y Aguada Blanca [Biological diversity of Salinas and Aguada Blanca National Reserve], Eds: H. Zeballos, J.A. Ochoa, E. López) – Desco, Profonanpe, Sernanp, Lima, pp. 261–273.
  • Padilla F.M., Pugnaire F.I. 2006 – The role of nurse plants in the restoration of degrated environments – Front. Ecol. Environ. 4: 196–202.
  • Patty L., Halloy S.R.P., Hiltbrunner E., Körner C. 2010 – Biomass allocation in herbaceous plants under grazing impact in the high semi-arid Andes – Flora, 205: 695–703.
  • Pugnaire F.I., Luque M.T. 2001 – Changes in plant interactions along a gradient of environmental stress – Oikos, 93: 42–49.
  • Rivas-Martínez S., Tovar O. 1982 – Vegetatio Andinae, I. Datos sobre las comunidades vegetales altoandinas de los Andes Centrales del Peru [Andine vegetation, I. Data on Andean plant communities of the Central Andes of Peru] – Lazaroa, 4: 167–187.
  • Saiz H., Alados C.L. 2012 – Changes in Semi-Arid Plant Species Associations along a Livestock Grazing Gradient – PLoS ONE 7(7), e40551. doi:10.1371/journal.pone.0040551.
  • Smith A. 1994 – Introduction to Tropical Alpine Vegetation (In: Tropical Alpine Environments: Plant Form and Function, Eds: P.W. Rundel, A.P. Smith, F.C. Meinzer), Cambridge University Press, Cambridge, U.K., pp. 1-19.
  • Smith A.P., Young T.P. 1987 – Tropical alpine plant ecology – Ann. Rev. Ecol. Syst. 18: 137–158.
  • Warren II R.J. 2008 – Mechanisms driving understory evergreen herb distributions across slope aspects: as derived from landscape position – Plant Ecol. 198: 297–308.
Typ dokumentu
Bibliografia
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Identyfikator YADDA
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