The Ecology and paleoecology of continental aquatic environments (acronym in Spanish: EPAACO) is a newly created (april 2010) multidisciplinary research team, which bring together researchers, postgraduate and undergraduate students, who were individually working in different aspects of ecology and paleoecology of continental aquatic systems. The idea grew out as a way of complementing, linking and integrating the results obtained in each disciplinary area by individual staff members. From this integration on, it was possible to coordinate the multiplicity of indicators and approaches, allowing tracking in an independent way, the variations of different parameters or signals, contributing to more reliable and accurate interpretations, explanations and predictions.

Objectives:
To understand the modern dynamics of continental aquatic systems (shallow lakes) of the Pampa plain.
To reconstruct their environmental evolution during the late Quaternary from a multidisciplinary perspective.

The research lines encompass diverse aspects of the dynamic and functioning of continental aquatic systems (shallow lakes), which are needed to reconstruct their environmental evolution during the Holocene in the Pampa plain. For this purpose, we are working on actualistic models about population dynamic of different biological indicators (they will be the proxies from which past changes will be inferred), their interspecific relationships and with environmental variables. Other key points are to know the processes that promote destruction of the biological remains within sediments (actualistic taphonomy) as well as the environmental dynamic of water bodies and the effect of climate change and human impact on their dynamic. The combination between the ecological and paleolimnological approach, together with the multidisciplinary emphasis, allow obtaining a complete  knowledge of the patterns and processes of ecological changes in shallow lakes, at different temporal scales.

At present, we distinguish the following lines and sub-lines:

Actualistic Taphonomy
Fidelity and preservation of mollusks, ostracods and diatoms. Comparison between lotic and lenthic systems. Determination of the vertical extent and dynamics of the  aphonomically Active Zone (TAZ).

Paleolimnology
Analysis of biological multiproxies (diatoms, pollen, non-pollen palinomorphs, plant macrofossil remains and associated fauna, ostracods, mollusks) in sedimentary records.

Paleoclimatology
Quantitative and/or semi quantitative estimations of temperature and precipitation from Holocene fossil pollen records. These climatic reconstructions constitute an important contribution to the knowledge of the climatic patterns operating at regional scale during the Holocene, and allow the validation of climatic simulations (past-present-future) coming from the general models of atmospheric circulation.

Aerobiology
Study of the composition and dynamic of plant communities from wetlands and record of phenologic variations of key species as response to changes in environmental conditions (human impact and climate change) based on the analysis of atmospheric pollen. Production and transport of pollen belonging to native species with high interest for conservation;
quality of urban air and its relationship to allergies.

Director
Dr. Claudio G. De Francesco
Researcher CONICET.

Professor

Hassan, G. S., De Francesco, C. G., & Díaz, M. C. (2020). Actualistic Taphonomy of Freshwater Diatoms: Implications for the Interpretation of the Holocene Record in Pampean Shallow Lakes. In S. Martínez, A. Rojas, & F. Cabrera (Eds.), Actualistic Taphonomy in South America (pp. 89–109). Cham: Springer International Publishing. https://doi.org/10.1007/978-3-030-20625-3_6
De Francesco, C. G., Tietze, E., Cristini, P. A., & Hassan, G. S. (2020). Actualistic Taphonomy of Freshwater Mollusks from the Argentine Pampas: An Overview of Recent Research Progress. In S. Martínez, A. Rojas, & F. Cabrera (Eds.), Actualistic Taphonomy in South America (pp. 69–88). Cham: Springer International Publishing. https://doi.org/10.1007/978-3-030-20625-3_5
Mehl, A. E., Rojo, L., De Francesco, C. G., Cerdeño, E., & Forasiepi, A. M. (2019). El Pleistoceno de Mendoza: una síntesis geológica y paleontológica. Opera lilloana, 52, 537–573.
Hassan, G. S., Rojas, L. A., & De Francesco, C. G. (2018). Incorporating taphonomy into community-based paleoenvironmental reconstructions: can diatom preservation discriminate among shallow lake sub-environments? Palaios, 33(8), 376–392. https://doi.org/10.2110/palo.2017.111
Cristini, P. A., & De Francesco, C. G. (2017). Molluscan taphonomic patterns below the sediment-water interface in freshwater shallow lakes from the Southeastern Pampa plain, Argentina. Palaios, 32(8), 528–542. https://doi.org/10.2110/palo.2016.081
Cristini, P. A., Tietze, E., De Francesco, C. G., & Martínez, D. (2017). Water geochemistry of shallow lakes from the southeastern Pampa plain, Argentina and their implications on mollusk shells preservation. Science of The Total Environment, 603604, 155–166. https://doi.org/10.1016/j.scitotenv.2017.06.043
Neme, G. A., Gil, A. F., Garvey, R., Llano, C. L., Zangrando, A., Franchetti, F., … Michieli, C. T. (2011). El registro arqueológico de la Gruta de El Manzano y sus implicancias para la arqueología de Nordpatagonia. Magallania (Punta Arenas), 39(2), 243–265. Retrieved from http://www.scielo.cl/scielo.php?pid=S0718-22442011000200017&script=sci_arttext&tlng=en
Hassan, G. S., Tietze, E., Cristini, P. A., & De Francesco, C. G. (2014). Differential preservation of freshwater diatoms and mollusks in late Holocene sediments: paleoenvironmental implications. Palaios, 29(12), 612–623.
Navarro, D., Rojo, L., D., De Francesco, C. G., & Hassan, G. S. (2012). Paleoecología y reconstrucciones paleoambientales en mendoza durante el Holoceno. In G. A. Neme & A. Gil (Eds.), Paleoecología humana en el sur de mendoza: Perspectivas arqueológicas (pp. 17–56). Buenos Aires, Argentina: Sociedad Argentina de Antropología.
Tietze, E., & De Francesco, C. G. (2014). Taphonomic differences in molluscan shell preservation in freshwater environments from the southeastern Pampas, Argentina. Palaios, 29(10), 501–511. Retrieved from https://www.bioone.org/doi/full/10.2110/palo.2014.019
De Francesco, C. G., Tietze, E., & Cristini, P. A. (2013). Mollusk successions of Holocene shallow-lake deposits from the southeastern Pampa plain, Argentina. Palaios, 28(12), 851–862. Retrieved from https://www.bioone.org/doi/full/10.2110/palo.2013.100
Tietze, E., & De Francesco, C. G. (2012). Compositional fidelity of subfossil mollusk assemblages in streams and lakes of the southeastern Pampas, Argentina. Palaios, 27(6), 401–413. Retrieved from https://www.bioone.org/doi/full/10.2110/palo.2011.p11-124r
De Francesco, C. G., & Blasi, A. M. (2012). Redescripción y significado paleoambiental de Heleobia ameghini (Doering, 1884) (Gastropoda: Rissooidea) en el pleistoceno tardío de la provincia de Buenos Aires, Argentina. Ameghiniana, 49(1), 17–25. Retrieved from http://www.bioone.org/doi/abs/10.5710/AMGH.v49i1(311)
Cristini, P. A., & De Francesco, C. G. (2012). Análisis tafonómico de moluscos por debajo de la interfase agua-sedimento en la laguna Nahuel Rucá (provincia de Buenos Aires, Argentina). Ameghiniana, 49(4), 594–605. Retrieved from https://www.bioone.org/doi/full/10.5710/AMGH.1.12.2012.352
Co-Director
Dra. Silvina M. Stutz
Researcher CONICET.

Professor

Messineo, P. G., Tonello, M. S., Stutz, S., Tripaldi, A., Scheifler, N., Pal, N., … Navarro, D. (2019). Human occupation strategies and related environmental-climate during the middle and late Holocene in central Pampas of Argentina. The Holocene, 29(2), 244–261. https://doi.org/10.1177/0959683618810407
Stutz, S., Tonello, M. S., González-Sagrario, M. de los Á., Navarro, D., & Fontana, S. L. (2014). Historia ambiental de los lagos someros de la llanura Pampeana (Argentina) desde el Holoceno medio: Inferencias paleoclimáticas. Latin American Journal of Sedimentology and Basin Analysis, 21(2), 119–138. Retrieved from http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-49792014000200004
Piovano, E. L., Córdoba, F. E., & Stutz, S. (2014). Limnogeology in Southern South America: an overview. Latin American Journal of Sedimentology and Basin Analysis, 21(2), 65–75. Retrieved from http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-49792014000200001
Masciadri, S., Stutz, S., & García-Rodríguez, F. (2013). Modern pollen–vegetation relationship of plant communities in the Uruguayan Atlantic coast. Brazilian Journal of Botany, 36(1), 31–44.
Inda, H., García-Rodríguez, F., del Puerto, L., Stutz, S., Figueira, R. C. L., de Lima Ferreira, P. A., & Mazzeo, N. (2016). Discriminating between natural and human-induced shifts in a shallow coastal lagoon: A multidisciplinary approach. Anthropocene, 16, 1–15.
Researchers
Dra. Laura Ferrero
Professor
González-Sagrario, M. de los Á., & Ferrero, L. (2013). The trophic role of Cyphocharax voga (Hensel 1869) according to foraging area and diet analysis in turbid shallow lakes. Fundamental and Applied Limnology, 183(1), 75–88. Retrieved from http://www.ingentaconnect.com/content/schweiz/fal/2013/00000183/00000001/art00007
Marquez, M., Ferrero, L., & Cusminsky, G. (2016). Holocene palaeoenvironmental evolution of the pampa coastal plain (Argentina) based on calcareous microfossils. Revista Brasileira de Paleontologia, 19, 25–40.
Dra. Gabriela S. Hassan
Researcher CONICET.

Teaching assistant

Hassan, G. S., De Francesco, C. G., & Díaz, M. C. (2020). Actualistic Taphonomy of Freshwater Diatoms: Implications for the Interpretation of the Holocene Record in Pampean Shallow Lakes. In S. Martínez, A. Rojas, & F. Cabrera (Eds.), Actualistic Taphonomy in South America (pp. 89–109). Cham: Springer International Publishing. https://doi.org/10.1007/978-3-030-20625-3_6
De Francesco, C. G., Tietze, E., Cristini, P. A., & Hassan, G. S. (2020). Actualistic Taphonomy of Freshwater Mollusks from the Argentine Pampas: An Overview of Recent Research Progress. In S. Martínez, A. Rojas, & F. Cabrera (Eds.), Actualistic Taphonomy in South America (pp. 69–88). Cham: Springer International Publishing. https://doi.org/10.1007/978-3-030-20625-3_5
Hassan, G. S., Rojas, L. A., & De Francesco, C. G. (2018). Incorporating taphonomy into community-based paleoenvironmental reconstructions: can diatom preservation discriminate among shallow lake sub-environments? Palaios, 33(8), 376–392. https://doi.org/10.2110/palo.2017.111
Hassan, G. S. (2018). Within versus between-lake variability of sedimentary diatoms: the role of sampling effort in capturing assemblage composition in environmentally heterogeneous shallow lakes. Journal of Paleolimnology, 60(4), 525–541. https://doi.org/10.1007/s10933-018-0038-8
Martínez, G., Mazzanti, D. L., Quintana, C., Zucol, A. F., Colobig, M., Hassan, G. S., … Passeggi, E. (2013). Geoarchaeological and Paleoenvironmental context of the human settlement in the Eastern Tandilia Range, Argentina. Quaternary International, 299, 23–37. Retrieved from http://www.sciencedirect.com/science/article/pii/S104061821203399X
Hassan, G. S., Tietze, E., Cristini, P. A., & De Francesco, C. G. (2014). Differential preservation of freshwater diatoms and mollusks in late Holocene sediments: paleoenvironmental implications. Palaios, 29(12), 612–623.
Navarro, D., Rojo, L., D., De Francesco, C. G., & Hassan, G. S. (2012). Paleoecología y reconstrucciones paleoambientales en mendoza durante el Holoceno. In G. A. Neme & A. Gil (Eds.), Paleoecología humana en el sur de mendoza: Perspectivas arqueológicas (pp. 17–56). Buenos Aires, Argentina: Sociedad Argentina de Antropología.
Hassan, G. S. (2015). On the benefits of being redundant: low compositional fidelity of diatom death assemblages does not hamper the preservation of environmental gradients in shallow lakes. Paleobiology, 41(1), 154–173. Retrieved from http://www.bioone.org/doi/abs/10.1017/pab.2014.10
Hassan, G. S., Espinosa, M. A., & Isla, F. I. (2011). Fluctuaciones de salinidad durante el Holoceno en la laguna costera de Mar Chiquita (Provincia de Buenos Aires): una aproximación cuantitativa basada en diatomeas. Ameghiniana, 48(4), 496–507. Retrieved from http://www.bioone.org/doi/abs/10.5710/AMGH.v48i4(326)
Dra. Fabiana Latorre
Researcher

CONICET.

Professor

Teaching assistant

Latorre, F., Alarcón, P., & Fassola, H. (2013). Temporal and spatial distribution of Araucaria angustifolia (araucariaceae) pollen in Misiones, Argentina. Boletín de La Sociedad Argentina de Botánica, 48(3–4), 453–464. Retrieved from https://revistas.unc.edu.ar/index.php/BSAB/article/view/7552
Latorre, F., Alarcón, P., & Fassola, H. (2013). Distribución temporal y espacial del polen de Araucaria angustifolia (Araucariaceae) en Misiones, Argentina. Boletín de La Sociedad Argentina de Botánica, 48(3–4), 453–464. Retrieved from http://www.scielo.org.ar/scielo.php?pid=S1851-23722013000300008&script=sci_arttext&tlng=en
Dra. Marcela S. Tonello
Researcher CONICET

Teaching assistant

Messineo, P. G., Tonello, M. S., Stutz, S., Tripaldi, A., Scheifler, N., Pal, N., … Navarro, D. (2019). Human occupation strategies and related environmental-climate during the middle and late Holocene in central Pampas of Argentina. The Holocene, 29(2), 244–261. https://doi.org/10.1177/0959683618810407
Berman, A. L., Silvestri, G. E., & Tonello, M. S. (2018). On the differences between Last Glacial Maximum and Mid-Holocene climates in southern South America simulated by PMIP3 models. Quaternary Science Reviews, 185, 113–121. https://doi.org/10.1016/j.quascirev.2018.02.003
Stutz, S., Tonello, M. S., González-Sagrario, M. de los Á., Navarro, D., & Fontana, S. L. (2014). Historia ambiental de los lagos someros de la llanura Pampeana (Argentina) desde el Holoceno medio: Inferencias paleoclimáticas. Latin American Journal of Sedimentology and Basin Analysis, 21(2), 119–138. Retrieved from http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-49792014000200004
Berman, A. L., Silvestri, G. E., Rojas, M., & Tonello, M. S. (2017). Accelerated greenhouse gases versus slow insolation forcing induced climate changes in southern South America since the Mid-Holocene. Climate Dynamics, 48(1–2), 387–404.
Berman, A. L., Silvestri, G. E., & Tonello, M. S. (2016). Differences between Last Glacial Maximum and present-day temperature and precipitation in southern South America. Quaternary Science Reviews, 150, 221–233.
Dra. Mariana del Sol Addino
Researcher

CONICET

Montemayor, D. I., Canepuccia, A. D., Farina, J., Addino, M., Valiñas, M., & Iribarne, O. O. (2019). Effects of Spartina Wrack on Surface-Active Arthropod Assemblage Under Different Environmental Contexts in Southwest Atlantic Salt Marshes. Estuaries and Coasts, 42(4), 1104–1126. https://doi.org/10.1007/s12237-018-00509-7
Addino, M. S., Alvarez, M. F., Brey, T., Iribarne, O., & Lomovasky, B. J. (2019). Growth changes of the stout razor clam Tagelus plebeius (Lightfoot, 1786) under different salinities in SW Atlantic estuaries. Journal of Sea Research, 146, 14–23. https://doi.org/10.1016/j.seares.2019.01.005
Alvarez, M. F., Cielo Bazterrica, M., Fanjul, E., Addino, M. S., Valiñas, M. S., Iribarne, O. O., & Botto, F. (2018). Effects of two estuarine intertidal polychaetes on infaunal assemblages and organic matter under contrasting crab bioturbation activity. Journal of Sea Research, 139, 33–40. https://doi.org/10.1016/j.seares.2018.06.008
Bruschetti, C. M., Addino, M., Luppi, T., & Iribarne, O. (2018). Effects of nutrient enrichment and grazing by an invasive filter feeder on phytoplankton biomass in a South West Atlantic coastal lagoon. Biological Invasions, 20(8), 2245–2256. https://doi.org/10.1007/s10530-018-1699-y
Montemayor, D. I., Addino, M., Valiñas, M., Fanjul, M. E., Alvarez, M. F., & Iribarne, O. O. (2015). Biomass dynamics of the two dominant SW Atlantic Spartina species and its implications on the saltmarsh organic matter accumulation/exportation. Aquatic Botany, 120, 201–204. Retrieved from http://www.sciencedirect.com/science/article/pii/S0304377014000886
Fanjul, M. E., Escapa, M., Montemayor, D., Addino, M., Alvarez, M. F., Grela, M. A., & Iribarne, O. (2015). Effect of crab bioturbation on organic matter processing in South West Atlantic intertidal sediments. Journal of Sea Research, 95, 206–216. Retrieved from http://www.sciencedirect.com/science/article/pii/S1385110114001038
Alvarez, M. F., Montemayor, D. I., Bazterrica, M. C., Addino, M., Fanjul, M. E., Iribarne, O., & Botto, F. (2013). Interaction strength varies in relation to tidal gradient and spatial heterogeneity in an intertidal Southwest Atlantic estuarine food web. Journal of Experimental Marine Biology and Ecology, 449, 154–164. Retrieved from http://www.sciencedirect.com/science/article/pii/S002209811300333X
Lomovasky, B. J., Alvarez, G., Addino, M., Montemayor, D. I., & Iribarne, O. (2014). A new non-indigenous Crassostrea species in Southwest Atlantic salt marshes affects mortality of the cordgrass Spartina alterniflora. Journal of Sea Research, 90, 16–22.
Addino, M., Alvarez, M. F., Iribarne, O., & Lomovasky, B. J. (2016). Interaction between a mobile and a sessile species in SW Atlantic mudflats: Lack of negative effects of the mud crab Cyrtograpsus angulatus Dana, 1851 on filtration rate and growth of the infaunal clam Tagelus plebeius (Lightfoot, 1786). Journal of Experimental Marine Biology and Ecology, 476, 65–71.
Valiñas, M. S., Molina, L. M., Addino, M., Montemayor, D. I., Acha, E. M., & Iribarne, O. O. (2012). Biotic and environmental factors affect Southwest Atlantic saltmarsh use by juvenile fishes. Journal of Sea Research, 68, 49–56. Retrieved from http://www.sciencedirect.com/science/article/pii/S1385110111001602
Addino, M. S., Montemayor, D. I., Escapa, M., Alvarez, M. F., Valiñas, M. S., Lomovasky, B. J., & Iribarne, O. (2015). Effect of Spartina alterniflora Loisel, 1807 on growth of the stout razor clam Tagelus plebeius (Lightfoot, 1786) in a SW Atlantic estuary. Journal of Experimental Marine Biology and Ecology, 463, 135–142. Retrieved from http://www.sciencedirect.com/science/article/pii/S002209811400313X
Alvarez, M. F., Addino, M., Iribarne, O., & Botto, F. (2015). Combined engineering effects of clams and crabs on infaunal assemblages and food availability in intertidal systems. Marine Ecology Progress Series, 540, 57–71. Retrieved from http://www.int-res.com/abstracts/meps/v540/p57-71/
Alvarez, M. F., Esquius, K. S., Addino, M., Alberti, J., Iribarne, O., & Botto, F. (2013). Cascading top-down effects on estuarine intertidal meiofaunal and algal assemblages. Journal of Experimental Marine Biology and Ecology, 440, 216–224. Retrieved from http://www.sciencedirect.com/science/article/pii/S002209811300004X
Dra. Eleonor Tietze
Researcher

CONICET

De Francesco, C. G., Tietze, E., Cristini, P. A., & Hassan, G. S. (2020). Actualistic Taphonomy of Freshwater Mollusks from the Argentine Pampas: An Overview of Recent Research Progress. In S. Martínez, A. Rojas, & F. Cabrera (Eds.), Actualistic Taphonomy in South America (pp. 69–88). Cham: Springer International Publishing. https://doi.org/10.1007/978-3-030-20625-3_5
Cristini, P. A., Tietze, E., De Francesco, C. G., & Martínez, D. (2017). Water geochemistry of shallow lakes from the southeastern Pampa plain, Argentina and their implications on mollusk shells preservation. Science of The Total Environment, 603604, 155–166. https://doi.org/10.1016/j.scitotenv.2017.06.043
Hassan, G. S., Tietze, E., Cristini, P. A., & De Francesco, C. G. (2014). Differential preservation of freshwater diatoms and mollusks in late Holocene sediments: paleoenvironmental implications. Palaios, 29(12), 612–623.
Tietze, E., & De Francesco, C. G. (2014). Taphonomic differences in molluscan shell preservation in freshwater environments from the southeastern Pampas, Argentina. Palaios, 29(10), 501–511. Retrieved from https://www.bioone.org/doi/full/10.2110/palo.2014.019
De Francesco, C. G., Tietze, E., & Cristini, P. A. (2013). Mollusk successions of Holocene shallow-lake deposits from the southeastern Pampa plain, Argentina. Palaios, 28(12), 851–862. Retrieved from https://www.bioone.org/doi/full/10.2110/palo.2013.100
Tietze, E. (2011). Distribución de Heleobia parchappii parchappii en ambientes en ambientes dulceacuícolas de la Región Pampeana (Argentina) eacuícolas de la Región Pampeana (Argentina) eacuícolas de la Región Pampeana (Argentina). Amici Molluscarum, Número especial, 73–75. Retrieved from https://www.researchgate.net/profile/Nestor_J_Cazzaniga/publication/286776351_El_genero_Heleobia_Caenogastropoda_Cochliopidae_en_America_del_Sur/links/566d941208ae430ab4fffae7.pdf#page=75
Tietze, E., & De Francesco, C. G. (2012). Compositional fidelity of subfossil mollusk assemblages in streams and lakes of the southeastern Pampas, Argentina. Palaios, 27(6), 401–413. Retrieved from https://www.bioone.org/doi/full/10.2110/palo.2011.p11-124r
Becarios
Dra. Melina Márquez
Postdoctoral Fellow
Lic. Marisel C. Díaz
Doctoral Fellow
Prof. Lic. Fabio Lucas Flores
Doctoral Fellow