Now showing items 194-213 of 225

    • Marquet, Pablo A.; Quiñones, Renato A.; Abades, Sebastián R.; Labra, Fabio A.; Tognelli, Marcelo F.; Arim, Matías; Rivadeneira, Marcelo (COMPANY OF BIOLOGISTS LTD, 2005-05)
      Scaling relationships (where body size features as the independent variable) and power-law distributions are commonly reported in ecological systems. In this review we analyze scaling relationships related to energy ...
    • Labra, Fabio A.; Marquet, Pablo A.; Bozinovic, Francisco (NATL ACAD SCIENCES, 2007-06-26)
      Complex ecological and economic systems show fluctuations in macroscopic quantities such as exchange rates, size of companies or populations that follow non-Gaussian tent-shaped probability distributions of growth rates ...
    • Rivadeneira, Marcelo; Marquet, Pablo A. (PALEONTOLOGICAL SOC INC, 2007)
      We assessed selective extinction patterns in bivalves during a late Neogene mass extinction event observed along the temperate Pacific coast of South America. The analysis of 99 late Neogene and Quaternary fossil sites ...
    • Peppe, Daniel J.; Royer, Dana L.; Cariglino, Bárbara; Oliver, Sofia Y.; Newman, Sharon; Leight, Elias; Enikolopov, Grisha; Fernández Burgos, Margo; Herrera, Fabiany; Adams, Jonathan M.; Correa, Edwin; Currano, Ellen D.; Erickson, J. Mark; Hoganson, John W.; Iglesias, Ari; Jaramillo, Carlos A.; Johnson, Kirk R.; Jordan, Gregory J.; Kraft, Nathan J. B.; Lovelock, Elizabeth C.; Lusk, Christopher H.; Niinemets, Ulo; Peñuelas, Josep; Hinojosa Opazo, Luis; Rapson, Gillian; Wing, Scott L.; Wright, Ian J. (WILEY-BLACKWELL, 2011)
      P>Paleobotanists have long used models based on leaf size and shape to reconstruct paleoclimate. However, most models incorporate a single variable or use traits that are not physiologically or functionally linked to ...
    • Badano, Ernesto I.; Cavieres, Lohengrin A.; Molina Montenegro, Marco A.; Quiroz, C. L. (ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2005-07)
      The most important processes shaping communities are likely to leave observable imprints on their spatial structure. The net outcome of positive and negative interactions among plants has been proposed to vary inversely ...
    • Quade, Jay; Rech, Jason A.; Latorre, Claudio; Betancourt, Julio L.; Gleeson, Erin; Arroyo, Mary T. K. (PERGAMON-ELSEVIER SCIENCE LTD, 2007-08-01)
      We evaluate the impact of exceptionally sparse plant cover (0-20%) and rainfall (2-114 mm/yr) on the stable carbon and oxygen composition of soil carbonate along elevation transects in what is among the driest places on ...
    • Maldonado Márquez, Alan; Contador, Tamara; Rendoll Cárcamo, Javier; Moore, Sabrina; Pérez Troncoso, Carolina; Gómez Uchida, Daniel; Harrod, Chris (Wiley, 2020)
      The Cape Horn Biosphere Reserve, one of the last wild areas of the planet, is not exempt from the pressures of global change, such as non-native species introductions. During 2018 and 2019 we studied the Robalo river basin ...
    • Benito, Xavier; Vilmi, Annika; Luethje, Melina; Carrevedo, María Laura; Lindholm, Marja; Fritz, Sherilyn C. (Frontiers Media, 2020)
      High-elevation tropical lakes are excellent sentinels of global change impacts, such as climate warming, land-use change, and atmospheric deposition. These effects are often correlated with temporal and spatial beta diversity ...
    • Varela, Daniel A.; Santelices, Bernabé; Correa, Juan A.; Arroyo, Mary T. K. (SPRINGER, 2006-12)
      The red alga Mazzaella laminarioides is an economically important species with an extended latitudinal distribution along the Chilean coast. Its populations form mid-intertidal stands, several meters wide, and therefore ...
    • Torres Contreras, Hugo; Vásquez Salfate, Rodrigo (BLACKWELL, 2007-01)
      The spatial structure of habitats contains physical barriers that restrict the performance of diverse behavioural tasks. In heterogeneous habitats, information acquisition may allow animals to improve the performance of ...
    • Mugnaini, Matias; Polania Caviedes, Diana Marcela; Díaz, Yannina; Ezquer, Marcelo; Ezquer, Fernando; Deacon, Robert M. J.; Cogram, Patricia; Kropf, Emilio (Nature, 2022)
      The Octodon degus is a South American rodent that is receiving increased attention as a potential model of aging and sporadic late-onset Alzheimer's disease (AD). Impairments in spatial memory tasks in Octodon degus have ...
    • Arim, Matías; Abades, Sebastián R.; Neill, Paula E.; Lima, Mauricio; Marquet, Pablo A. (NATL ACAD SCIENCES, 2006-01-10)
      Species invasions are a principal component of global change, causing large losses in biodiversity as well as economic damage. Invasion theory attempts to understand and predict invasion success and patterns of spread. ...
    • Behrensmeyer, Anna K.; Quade, Jay; Cerling, Thure E.; Kappelman, John; Khan, Imran A.; Copeland, Peter; Roe, Lois; Hicks, Jason; Stubblefield, Phoebe; Willis, Brian J.; Latorre, Claudio (GEOLOGICAL SOC AMER, 2007-11)
      This study uses stable isotope variation within individual Mio-Pliocene paleosols to investigate subkilometer-scale phytogeography of late Miocene vegetation change in southeast Asia between ca. 8.1 and 5 Ma, a time interval ...
    • Rendoll Cárcamo, Javier; Contador Mejías, Tamara; Convey, Peter; Kennedy, James (MDPI, 2020)
      Physiological thermal limits of organisms are linked to their geographic distribution. The assessment of such limits can provide valuable insights when monitoring for environmental thermal alterations. Using the dynamic ...
    • 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)
    • Jara, Ignacio A.; Moreno Moncada, Patricio (Elsevier, 2012)
      We present detailed pollen and charcoal records from Lago Pichilafquén (~41°S) to decipher the effects of climate change and varying disturbance regimes on the composition and structure of the vegetation on the Andean ...
    • Tarifeño, E.; Carmona, M.; Llanos Rivera, A.; Castro, L. R. (SPRINGER, 2008-04)
      We assessed differences in the development rates among anchoveta, E. ringens populations from the extremes of its range under different temperatures. Time to hatch decreased with increasing temperature but there was no ...
    • Rozzi, Ricardo; Massardo, Francisca; Anderson, Christopher B.; Heidinger, Kurt; Silander, John A., Jr. (RESILIENCE ALLIANCE, ACADIA UNIV, BIOLOGY DEPT, 2006-06)
      Although there is general agreement among conservation practitioners about the need for ( 1) social involvement on the part of scientists; ( 2) interdisciplinary approaches; ( 3) working on local, regional, and global ...
    • Weller, D. J.; Miranda, C. G.; Moreno Moncada, Patricio; Villa Martínez, Rodrigo; Stern, Charles R. (Springer, 2015)
      Correlations among and identification of the source volcanoes for over 60 Late Glacial and Holocene tephras preserved in eight lacustrine sediment cores taken from small lakes near Coyhaique, Chile (46 degrees S), were ...
    • Quezada Romegialli, Claudio; Véliz Baeza, David; Docmac, Felipe; Harrod, Chris (Taylor & Francis, 2016)
      Cheilodactylus variegatus is a common benthivorous marine fish inhabiting in rocky subtidal habitats in the eastern south Pacific coast of Chile and Peru. However, its biology and ecology are relatively understudied and ...