Now showing items 1-18 of 18

    • The avifauna of Bosque Fray Jorge National Park and Chile's Norte Chico 

      Kelt, Douglas A.; Cofre, Hernan; Cornelius, Cintia; Engilis, Andrew, Jr.; Gutiérrez, Julio R.; Marquet, Pablo A.; Medel, Rodrigo; Meserve, Peter L.; Quirici, Verónica; Samaniego, Horacio; Vásquez Salfate, Rodrigo (ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD., 2016)
      The avifauna of Chile is relatively depauperate, comprising 469 extant species, of which 213 are terrestrial. However, the Coquimbo Region presents a broad ecological transition from the hyperarid Atacama Desert to the ...
    • Bottom-up control of consumers leads to top-down indirect facilitation of invasive annual herbs in semiarid Chile 

      Madrigal, Jaime; Kelt, Douglas A.; Meserve, Peter L.; Gutiérrez, Julio R.; Squeo, Francisco A. (ECOLOGICAL SOC AMER, 2011-02)
      The abundance of exotic plants is thought to be limited by competition with resident species (including plants and generalist herbivores). In contrast, observations in semiarid Chile suggest that a native generalist rodent, ...
    • Ciencias ambientales: diagnóstico y mirada hacia el futuro 

      Arroyo, Mary T. K.; Armesto, Juan J.; Bozinovic, Francisco; Cavieres, Lohengrin A.; Gutiérrez, Julio R.; Latorre, Claudio; Marquet, Pablo A.; Soto, Doris; Squeo, Francisco A. (Academia Chilena de Ciencias, 2005)
    • Extreme climatic events shape arid and semiarid ecosystems 

      Holmgren, Milena; Stapp, Paul; Dickman, Chris R.; Gracia, Carlos; Graham, Sonia; Gutiérrez, Julio R.; Hice, Christine; Jaksic, Fabián; Kelt, Douglas A.; Letnic, Mike; Lima, Mauricio; López, Bernat C.; Meserve, Peter L.; Milstead, W. Bryan; Polis, Gary A.; Previtali, M. Andrea; Richter, Michael; Sabaté, Santi; Squeo, Francisco A. (ECOLOGICAL SOC AMER, 2006-03)
      Climatic changes associated with the El Nino Southern Oscillation (ENSO) can have a dramatic impact on terrestrial ecosystems worldwide, but especially on arid and semiarid systems, where productivity is strongly limited ...
    • Herbivory and plant growth rate determine the success of El Nino Southern Oscillation-driven tree establishment in semiarid South America 

      Holmgren, Milena; López, Bernat C.; Gutiérrez, Julio R.; Squeo, Francisco A. (BLACKWELL, 2006-12)
      While climatic extremes are predicted to increase with global warming, we know little about the effect of climatic variability on biome distribution. Here, we show that rainy El Nino Southern Oscillation (ENSO) events can ...
    • Increasing aridity reduces soil microbial diversity and abundance in global drylands 

      Maestre, Fernando T.; Delgado Baquerizo, Manuel; Jeffries, Thomas C.; Eldridge, David J.; Ochoa, Victoria; Gozalo, Beatriz; Quero, José Luis; García Gómez, Miguel; Gallardo, Antonio; Ulrichg, Werner; Bowker, Matthew A.; Arredondo, Tulio; Barraza Zepeda, Claudia; Bran, Donaldo; Florentino, Adriana; Gaitán, Juan; Gutiérrez, Julio R.; Huber Sannwald, Elisabeth; Jankju, Mohammad; Mau, Rebecca L.; Miriti, Maria; Naseri, Kamal; Ospina, Abelardo; Stavi, Ilan; Wang, Deli; Woods, Natasha N.; Yuan, Xia; Zaady, Eli; Singh, Brajesh K. (Natl Acad Sciences, 2015)
      Soil bacteria and fungi play key roles in the functioning of terrestrial ecosystems, yet our understanding of their responses to climate change lags significantly behind that of other organisms. This gap in our understanding ...
    • Physiological flexibility in field urine osmolality of rodents from semi-arid Chile 

      Bozinovic, Francisco; Lima, Mauricio; Bacigalupe, Leonardo D.; Gutiérrez, Julio R.; Rosenmann Abramovich, Mario; Cortés, Arturo (University of California, 2007)
    • Population dynamics of two sympatric rodents in a variable environment: rainfall, resource availability, and predation 

      Previtali, M. Andrea; Lima, Mauricio; Meserve, Peter L.; Kelt, Douglas A.; Gutiérrez, Julio R. (2009)
      Precipitation plays an important role in the dynamics of species found in arid and semiarid environments. However, population fluctuations generally are driven by a combination of multiple factors whose relative contribution ...
    • Primary production dynamics and climate variability: Ecological consequences in semiarid Chile 

      De La Maza, Mariano; Lima, Mauricio; Meserve, Peter L.; Gutiérrez, Julio R.; Jaksic, Fabian M. (2009)
      Increase in rainfall variability has important consequences for organisms in arid and semiarid regions around the world. In South American and Australian deserts, the El Niño/Southern Oscillation (ENSO) phenomenon greatly ...
    • Productividad y diversidad florística de la Vega Tambo, Cordillera de Doña Ana 

      Squeo, Francisco A.; Ibacache, Eric; Warner, Barry; Espinoza, Diana; Aravena, Ramón; Gutiérrez, Julio R. (Ediciones Universidad de L a Serena, 2006)
      En este trabajo se describen algunas características generales de los humedales, con énfasis en las vegas andinas. En particular, se muestran los resultados de varios estudios realizados entre los años 1994 y 2003 en la ...
    • Rainfall, microhabitat, and small mammals influence the abundance and distribution of soil microorganisms in a Chilean semi-arid shrubland 

      Aguilera, Lorgio E.; Armas, Cristina; Cea, Alex P.; Gutiérrez, Julio R.; Meserve, Peter L.; Kelt, Douglas A. (ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2016)
      Patterns in rainfall and soil water availability are considered to be the main drivers governing arid and semiarid ecosystems. While the mechanisms by which water limits aboveground net primary production has been widely ...
    • Reduced herbivore pressure under rainy ENSO conditions could facilitate dryland reforestation 

      Gutiérrez, Julio R.; Holmgren, Milena; Manrique, Rosa; Squeo, Francisco A. (ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2007-01)
      Most semi-arid and and regions around the world have lost a major part of their original vegetation.. Restoration of once shrublands and woodlands is often challenged by low seedling establishment success due to water ...
    • Reduced herbivory during simulated ENSO rainy events increases native herbaceous plants in semiarid Chile 

      Manrique, Rosa; Gutiérrez, Julio R.; Holmgren, Milena; Squeo, Francisco A. (SPRINGER, 2007-07)
      El Nino Southern Oscillation (ENSO) events have profound consequences for the dynamics of terrestrial ecosystems. Since increased climate variability is expected to favour the invasive success of exotic species, we conducted ...
    • Shrub facilitation increases plant diversity along an arid scrubland-temperate rain forest boundary in South America 

      van Zonneveld, Maarten J.; Gutiérrez, Julio R.; Holmgren, Milena (2012)
      Aim: Theoretical models predict nurse plant facilitation enhances species richness by ameliorating stressful environmental conditions and expanding distributional ranges of stress-intolerant species into harsh environments. ...
    • A synthesis of ENSO effects on drylands in Australia, North America and South America 

      Holmgren, Milena; Stapp, Paul; Dickman, Chris R.; Gracia, Carlos; Graham, Sonia; Gutiérrez, Julio R.; Hice, C.; Jaksic, Fabián; Kelt, Douglas A.; Letnic, Mike; Lima, Mauricio; López, Bernat C.; Meserve, Peter L.; Milstead, W. Bryan; Polis, Gary A.; Previtali, M. Andrea; Richter, Michael; Sabaté, Santi; Squeo, Francisco A. (2006)
    • The avifauna of Bosque Fray Jorge National Park and Chile's Norte Chico 

      Kelt, Douglas A.; Cofré, Hernán; Cornelius, Cintia; Engilis, Andrew; Gutiérrez, Julio R.; Marquet, Pablo A.; Medel, Rodrigo; Meserve, Peter L.; Quirici, Verónica; Samaniego, Horacio; Vásquez Salfate, Rodrigo (Academic Press, 2016)
      © 2015 Elsevier Ltd. The avifauna of Chile is relatively depauperate, comprising 469 extant species, of which 213 are terrestrial. However, the Coquimbo Region presents a broad ecological transition from the hyperarid ...
    • Tree establishment along an ENSO experimental gradient in the Atacama desert 

      Squeo, Francisco A.; Holmgren, Milena; Jiménez, Milagros; Alban, Luis; Reyes, José; Gutiérrez, Julio R. (OPULUS PRESS UPPSALA AB, 2007-04)
      Questions: (1) What are the roles of regional climate and plant growth rate for seedling establishment during ENSO rainy pulses along the western coast of South America? (2) What is the water threshold for tree seedling ...
    • Vegetation changes and sequential flowering after rain in the southern Atacama Desert 

      Vidiella, Patricia E.; Armesto, Juan J.; Gutiérrez, Julio R. (Academic Press, 1999)
      We describe the changes in plant cover, species richness, and flowering after rainfall over an entire growing season (September 1989-January 1990) in a southern Atacama Desert site in Chile. One month after the rain, ...