The effect of long-term and decadal climate and hydrology variations on estuarine marsh dynamics: an identifying case study from the Río de la Plata
The vertical growth of coastal wetlands is known to primarily be controlled by local tidal range and sediment availability as well as the occurrence of storm events. In estuaries, sediment availability additionally depends on riverine sediment input, the effect of which may be more pronounced in som...
Guardado en:
| Autores principales: | , , , , , , |
|---|---|
| Formato: | Articulo Preprint |
| Lenguaje: | Inglés |
| Publicado: |
2016
|
| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/128612 |
| Aporte de: |
| id |
I19-R120-10915-128612 |
|---|---|
| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Biología Estuarine marshes Río de la Plata Sediment deposition Decadal climate variability |
| spellingShingle |
Biología Estuarine marshes Río de la Plata Sediment deposition Decadal climate variability Schuerch, Mark Scholten, Jan Carretero, Silvina Claudia García-Rodríguez, Felipe Kumbier, K. Baechtiger, M. Liebetrau, Volker The effect of long-term and decadal climate and hydrology variations on estuarine marsh dynamics: an identifying case study from the Río de la Plata |
| topic_facet |
Biología Estuarine marshes Río de la Plata Sediment deposition Decadal climate variability |
| description |
The vertical growth of coastal wetlands is known to primarily be controlled by local tidal range and sediment availability as well as the occurrence of storm events. In estuaries, sediment availability additionally depends on riverine sediment input, the effect of which may be more pronounced in some parts of the estuary, thereby introducing a distinct spatial pattern that depends on the estuary's shape as well as the riverine sediment input and the hydro-meteorological regime. In the present study, we investigate how estuarine marshes along the whole Rio de la Plata (RdlP) are affected by decadal and long-term variations in river discharge and storm activity. The El Nino Southern Oscillation (ENSO), in this context, appears to introduce a pronounced decadal variability on sediment loads brought into the RdlP. Based on 15 sediment cores, recovered along the RdlP and adjacent Atlantic coast, vertical marsh growth rates were studied using radionuclide dating (210Pb and 137Cs) and grain size distributions. By comparing these sedimentological records with historic river discharge and storm surge data, we spatially interpret the relative importance of temporal variations in river discharge and storm activity on estuarine marsh growth. By delivering the first estimates for vertical growth rates of the RdlP marshes, we conclude that with average vertical marsh growth rates between 0.4 and 2.6 cm year− 1, the RdlP marshes are highly resilient against drowning under present and future sea-level rise (SLR) conditions. Furthermore, our results confirm a large spatial variability of the drivers for vertical marsh growth; extreme storm surges appear to play a role in the development of the outer RdlP marshes whereas the temporal variations in river discharge seem to be hierarchically more important for the marshes in the inner estuary. |
| format |
Articulo Preprint |
| author |
Schuerch, Mark Scholten, Jan Carretero, Silvina Claudia García-Rodríguez, Felipe Kumbier, K. Baechtiger, M. Liebetrau, Volker |
| author_facet |
Schuerch, Mark Scholten, Jan Carretero, Silvina Claudia García-Rodríguez, Felipe Kumbier, K. Baechtiger, M. Liebetrau, Volker |
| author_sort |
Schuerch, Mark |
| title |
The effect of long-term and decadal climate and hydrology variations on estuarine marsh dynamics: an identifying case study from the Río de la Plata |
| title_short |
The effect of long-term and decadal climate and hydrology variations on estuarine marsh dynamics: an identifying case study from the Río de la Plata |
| title_full |
The effect of long-term and decadal climate and hydrology variations on estuarine marsh dynamics: an identifying case study from the Río de la Plata |
| title_fullStr |
The effect of long-term and decadal climate and hydrology variations on estuarine marsh dynamics: an identifying case study from the Río de la Plata |
| title_full_unstemmed |
The effect of long-term and decadal climate and hydrology variations on estuarine marsh dynamics: an identifying case study from the Río de la Plata |
| title_sort |
effect of long-term and decadal climate and hydrology variations on estuarine marsh dynamics: an identifying case study from the río de la plata |
| publishDate |
2016 |
| url |
http://sedici.unlp.edu.ar/handle/10915/128612 |
| work_keys_str_mv |
AT schuerchmark theeffectoflongtermanddecadalclimateandhydrologyvariationsonestuarinemarshdynamicsanidentifyingcasestudyfromtheriodelaplata AT scholtenjan theeffectoflongtermanddecadalclimateandhydrologyvariationsonestuarinemarshdynamicsanidentifyingcasestudyfromtheriodelaplata AT carreterosilvinaclaudia theeffectoflongtermanddecadalclimateandhydrologyvariationsonestuarinemarshdynamicsanidentifyingcasestudyfromtheriodelaplata AT garciarodriguezfelipe theeffectoflongtermanddecadalclimateandhydrologyvariationsonestuarinemarshdynamicsanidentifyingcasestudyfromtheriodelaplata AT kumbierk theeffectoflongtermanddecadalclimateandhydrologyvariationsonestuarinemarshdynamicsanidentifyingcasestudyfromtheriodelaplata AT baechtigerm theeffectoflongtermanddecadalclimateandhydrologyvariationsonestuarinemarshdynamicsanidentifyingcasestudyfromtheriodelaplata AT liebetrauvolker theeffectoflongtermanddecadalclimateandhydrologyvariationsonestuarinemarshdynamicsanidentifyingcasestudyfromtheriodelaplata AT schuerchmark effectoflongtermanddecadalclimateandhydrologyvariationsonestuarinemarshdynamicsanidentifyingcasestudyfromtheriodelaplata AT scholtenjan effectoflongtermanddecadalclimateandhydrologyvariationsonestuarinemarshdynamicsanidentifyingcasestudyfromtheriodelaplata AT carreterosilvinaclaudia effectoflongtermanddecadalclimateandhydrologyvariationsonestuarinemarshdynamicsanidentifyingcasestudyfromtheriodelaplata AT garciarodriguezfelipe effectoflongtermanddecadalclimateandhydrologyvariationsonestuarinemarshdynamicsanidentifyingcasestudyfromtheriodelaplata AT kumbierk effectoflongtermanddecadalclimateandhydrologyvariationsonestuarinemarshdynamicsanidentifyingcasestudyfromtheriodelaplata AT baechtigerm effectoflongtermanddecadalclimateandhydrologyvariationsonestuarinemarshdynamicsanidentifyingcasestudyfromtheriodelaplata AT liebetrauvolker effectoflongtermanddecadalclimateandhydrologyvariationsonestuarinemarshdynamicsanidentifyingcasestudyfromtheriodelaplata |
| bdutipo_str |
Repositorios |
| _version_ |
1764820452591534083 |