Silicophytoliths from a Pampean native tree community (Celtis ehrenbergiana community) and their representation in the soil assemblage
| Autor: | Mariana Fernández Honaine, María Victoria De Rito, Eduardo Manuel Morel, Margarita Luisa Osterrieth |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
010506 paleontology Soil test CISTOLITHS Otras Ciencias de la Tierra y relacionadas con el Medio Ambiente 010603 evolutionary biology 01 natural sciences PHYTOLITHS Ciencias de la Tierra y relacionadas con el Medio Ambiente Ciencias Biológicas Celtis SE BUENOS AIRES PROVINCE CELTIS EHRENBERGIANA Ecology Evolution Behavior and Systematics Ciencias de las Plantas Botánica 0105 earth and related environmental sciences biology Ecology Celtis ehrenbergiana Paleontology Plant community Vegetation Native plant biology.organism_classification PAMPA SOIL Geography Phytolith Soil water CIENCIAS NATURALES Y EXACTAS |
| Popis: | Plant phytolith production and their incorporation into soil assemblages has been studied by diverse authors in different regions of theworld,mainly in the Northern Hemisphere and Africa. However, these types of studies are scarce in native plant communities from South America, especially in non-grass communities. The comprehension of the relation between plant phytolith production and their incorporation into soils is crucial for the interpretation of past environments and vegetation based on fossil phytolith records. The aim of this work is todescribe the silicophytolith production of a Pampean native tree community (Celtis ehrenbergiana community) and the silicophytolith assemblages of the soils, in order to understand the relation between silicophytolith production and their incorporation in these natural forests. Silicophytoliths from 19 species of these communitieswere extracted through a calcination technique; while soil samples were subjected to routine techniques. Soil silicophytoliths were counted and described, and their abundances were referred in relation to total soil mineralogy. Morphologies were similar between species and were mainly derived from the epidermal, vascular and sclerenchymatic tissues. Celtis spp. produced abundant diagnostic morphologies, such as cystoliths and platelet echinate silicophytoliths, typical of the genus. Soil assemblages were dominated by grass silicophytoliths and in a lesser proportion by dicotyledons silicophytoliths. However, grasses are scarcely found or absent in actual forests. These results showed that there was not a direct relation between plant silicophytolith production and soil phytolith incorporation in these forests. As it occurs in different environments worldwide, soil silicophytoliths are affected by taphonomical processes (fragmentation, dissolution, mobilization, etc.) and they are not always an exact reflection of phytolith production of local plants. These results indicate that a high silicophytolith production in plants (in this case Celtis spp.) is not always reflected in soil assemblages. These aspects should be considered in relation to the interpretation of fossil silicophytolith records. Fil: de Rito, Mara Victoria. Facultad de Ciencias Agrarias, UNMDP-EEA INTA, Balcarce, Grupo de Estudio de Agroecosistemas y Paisajes Rurales; Argentina Fil: Fernández Honaine, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina Fil: Osterrieth, Margarita Luisa. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Geología de Costas y del Cuaternario. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto de Geología de Costas y del Cuaternario; Argentina Fil: Morel, Eduardo Manuel. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|