Relationship between substrate, physico-chemical parameters and foraminiferal tests in the Doñana National Park, a Biosphere Reserve in SW Spain

Whole-rock and clay mineralogy as paleoenvironmental tracers during the Late Holocene sedimentary evolution of the Doñana National Park (SW Spain)

“…Group M3 (4 samples) presents the highest percentages of quartz (M: 75%), closely related to HEL-2, sandy ridges and cheniers located near the Doñana spit. They have similar composition to this spit and the aeolian dune systems of Abalario Sand Formation (Table 2), which are characterized by high quartz contents (> 50%) and minor percentages of feldspars and phyllosilicates (Pozo et al, 2010;Guerra et al, 2020). These sandy ridges are connected to the Doñana spit and coincide with the presence of erosive surfaces within it (Ruiz et al, 2013).…”

Understanding Role of Foraminifera in Environmental Studies: A Review

“…Salinity: It is the most important element controlling benthic foraminiferal assemblage. Foraminifera are more common and diversified in brackish or saline environments (Guerra et al 2019). The general pattern of foraminiferal species diversity decreases with decreasing salinity in brackish waters.…”

“…pH: Because various benthic foraminiferal species are adapted to diverse environments, the pH tolerance range is likely to vary from species to species. Many tidal pools with acidic pH lack benthic foraminifera (Guerra et al 2019). et al 2005).…”