Species-specific phenological trends in shallow Pampean lakes (Argentina) zooplankton driven by contemporary climate change in the Southern Hemisphere

dc.creatorDiovisalvi, Nadia Rosalia
dc.creatorOdriozola, Mariana Paola
dc.creatorGarcía de Souza, Javier Ricardo
dc.creatorRojas Molina, Florencia Mercedes
dc.creatorFontanarrosa, María Soledad
dc.creatorEscaray, Roberto Ulises
dc.creatorBustingorry, Jose Fernando
dc.creatorSanzano, Pablo Miguel
dc.creatorGrosman, Manuel Fabián
dc.creatorZagarese, Horacio Ernesto
dc.date2018-07
dc.date2020-06-02T19:08:06Z
dc.date.accessioned2023-07-14T20:07:08Z
dc.date.available2023-07-14T20:07:08Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/97332
dc.identifierhttps://ri.conicet.gov.ar/11336/82531
dc.identifierhttps://onlinelibrary.wiley.com/doi/full/10.1111/gcb.14423
dc.identifierissn:1354-1013
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7437975
dc.descriptionThe relationship between the timing of recurrent biological events and seasonal climatic patterns (i.e., phenology) is a crucial ecological process. Changes in phenology are increasingly linked to global climate change. However, current evidence of phenological responses to recent climate change is subjected to substantial regional and seasonal biases. Most available evidence on climate-driven phenological changes comes from Northern Hemisphere (NH) ecosystems and typically involves increases in spring and summer temperatures, which translate into earlier onsets of spring population developments. In the Argentine Pampa region, warming has occurred at a much slower pace than in the NH, and trends are mostly restricted to increases in the minimum temperatures. We used zooplankton abundance data from Lake Chascomús (recorded every two weeks from 2005 to 2015) to evaluate potential changes in phenology. We adopted a sequential screening approach to identify taxa displaying phenological trends and evaluated whether such trends could be associated to observe long-term changes in water temperature. Two zooplankton species displayed significant later shifts in phenology metrics (end date of <i>Brachionus havanaensis</i> seasonal distribution: 31 day/decade, onset and end dates of <i>Keratella americana</i> seasonal distribution: 59 day/decade and 82 day/decade, respectively). The timing of the observed shift in <i>B. havanaensis</i> phenology was coincident with a warming trend in the May lake water temperature (4.7°C per decade). Analysis of abundance versus temperature patterns from six additional shallow Pampean lakes, and evaluation of previous experimental results, provided further evidence that the lake water warming trend in May was responsible for the delayed decline of <i>B. havanaensis</i> populations in autumn. This study is the first report of freshwater zooplankton phenology changes in the Southern Hemisphere (SH).
dc.descriptionInstituto de Limnología "Dr. Raúl A. Ringuelet"
dc.formatapplication/pdf
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs 2.5 Argentina (CC BY-NC-ND 2.5)
dc.subjectBiología
dc.subjectCiencias Naturales
dc.subjectAutumn later shift
dc.subjectClimate change
dc.subjectPhenology
dc.subjectShallow lakes
dc.subjectSouth hemisphere
dc.subjectZooplankton
dc.titleSpecies-specific phenological trends in shallow Pampean lakes (Argentina) zooplankton driven by contemporary climate change in the Southern Hemisphere
dc.typeArticulo
dc.typePreprint


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