8 Works

Worlds apart: location above- or belowground determines plant litter decomposition in a semiarid Patagonian steppe

Paula Berenstecher, Patricia I. Araujo & Amy T. Austin
1. While considerable attention has been devoted to how precipitation modulates net primary productivity in arid and semiarid ecosystems, the emergence of multi-faceted controls on carbon (C) turnover suggests that there is much to be understood with respect to the mechanistic controls on plant litter decomposition. 2. In the Patagonian steppe, we conducted a long-term factorial experiment, evaluating the importance of position, litter quality, tissue origin and soil resources on rates of C turnover under...

Urbanization buffers seasonal change in composition of bird communities: a multi-continental meta-analysis

Lucas Leveau, Jukka Jokimäki & Marja-Liisa Kaisanlahti-Jokimäki
Aim: Urbanization buffers the seasonality of climate conditions and food availability and, therefore, may cause a seasonal homogenization of animal communities. However, the global effect of urbanization on the seasonal dynamics of animal communities remains unexplored. Our aim was to study the multi-continental relationship between urbanization and the seasonal change in bird composition and explore the influence of climatic factors on the urban-induced reduction of seasonality of bird composition. Location: Multi-continental Methods: We performed a...

Data from: Endophytes shape the legacy left by the above- and below ground litter of the host affecting the establishment of a legume

Alexia Minás, Pablo García-Parisi, Hugo Chludil & Marina Omacini
Plant litter is a key component of plant-soil feedback (PSF), given its strong potential impacts on plant establishment and growth, through chemical and physical pathways. Although PSF of the layer of dead plant material on the soil surface (aboveground litter) has been widely studied little is known about the role of dead roots (belowground litter) and the impact of plant symbionts on host litter legacy. Here, we examined whether the fungal endophyte Epichloë occultans changed...

Data from: Ontogeny in the steinmanellines (Bivalvia: Trigoniida): an intra- and interspecific appraisal using the Early Cretaceous faunas from the Neuquén Basin as a case study

Pablo S. Milla Carmona, Dario G. Lazo & Ignacio M. Soto
Despite the paleontological relevance and paleobiological interest of trigoniid bivalves, our knowledge of their ontogeny –an aspect of crucial evolutionary importance– remains limited. Here, we assess the intra- and interspecific ontogenetic variations exhibited by the genus Steinmanella Crickmay (Myophorellidae: Steinmanellinae) during the early Valanginian – late Hauterivian of Argentina, and explore some of their implications. The (ontogenetic) allometric trajectories of seven species recognized for this interval were estimated from longitudinal data using 3D geometric morphometrics,...

Evolution of male genitalia in the Drosophila repleta species group (Diptera: Drosophilidae)

Manuel Stefanini, Marco Silva Gottschalk, Natalia Soledad Calvo & Ignacio Maria Soto
The Drosophila repleta group comprises more than one hundred species that inhabit several environments in the Neotropics and use different hosts as rearing and feeding resources. Rather homogeneous in their external morphology, they are generally distinguished by the male genitalia, their fastest evolving morphological trait, constituting an excellent model to study patterns of genital evolution in the context of a continental adaptive radiation. Although much is known about the evolution of animal genitalia at population...

Data from: Different frequency control mechanisms and the exploitation of frequency space in passerines

Franz Goller, Jay Love & Gabriel Mindlin
1. Birdsong is used in reproductive context and, consequently, has been shaped by strong natural and sexual selection. The acoustic performance includes a multitude of acoustic and temporal characteristics that are thought to honestly reveal the quality of the singing individual. 2. One major song feature is frequency and its modulation. Sound frequency can be actively controlled, but the control mechanisms differ between different groups. Two described mechanisms are pressure-driven frequency changes in suboscines and...

Data from: Loss of fungal symbionts at the arid limit of the distribution range in a native Patagonian grass – resource ecophysiological relations

Cecilia Casas, Pedro E. Gundel, Eluney Deliens, Leopoldo J. Iannone, Guillermo García Martinez, María V. Vignale & Hans Schnyder
1. Crucial to our understanding of plant ecology is the consideration of the eco-physiological responses and constraints of plant-fungal symbioses throughout the native distribution range of their host. 2. We examined key eco-physiological roles of two co-occurring fungal symbionts [Epichloë endophytes and arbuscular mycorrhizal fungi (AMF)] in the endemic grass Hordeum comosum across a wide bioclimatic gradient and contrasting grazing severity. We sampled H. comosum plants along four humid-to-arid transects in Patagonia, Argentina, covering its...

Data and code for: Replay of innate vocal patterns during sleep in suboscines

Juan Francisco Döppler, Manon Peltier, Ana Amador, Franz Goller & Gabriel Mindlin
Activation of forebrain circuitry during sleep has been variably characterized as ‘pre- or replay’ and has been linked to memory consolidation. The evolutionary origins of this mechanism, however, are unknown. Sleep activation of the sensori-motor pathways of learned birdsong is a particularly useful model system because the muscles controlling the vocal organ are activated, revealing syringeal activity patterns for direct comparison with those of day-time vocal activity. Here we show that suboscine birds, which develop...

Registration Year

  • 2021
    8

Resource Types

  • Dataset
    8

Affiliations

  • University of Buenos Aires
    8
  • University of Münster
    2
  • University of Utah
    2
  • National University of the Littoral
    1
  • Technical University of Munich
    1
  • National Agricultural Technology Institute
    1
  • University of Lapland
    1
  • Universidade Federal de Pelotas
    1