Organic-walled dinoflagellate cysts and benthic foraminifera in coastal sediments of the last century from the Gulf of Tehuantepec, South Pacific Coast of Mexico

Operational taxonomy and (paleo-)autecology of round, brown, spiny dinoflagellate cysts from the Quaternary of high northern latitudes

“…Its attribution to the genus Echinidinium has been questioned by new observations of a saphopylic archeopyle (Matsuoka and Kawami, 2011). It is well known from modern sediments and is abundant from equatorial to temperate regions of the North Pacific, with percentages up to 25% (Marret and Zonneveld, 2003;Radi et al, 2007;Pospelova et al, 2008;Vásquez-Bedoya et al, 2008;Limoges et al, 2010;Krepakevich and Pospelova, 2010;Price and Pospelova, 2011;Fig. 2).…”

“…Described initially from the Arabian Sea (Zonneveld, 1997), this species has since been found in coastal and estuarine environments of the northeastern Pacific (Radi et al, 2007;Pospelova et al, 2008Vásquez-Bedoya et al, 2008;Krepakevich and Pospelova, 2010;Limoges et al, 2010;Price and Pospelova, 2011). In the modern Northern Hemisphere database, E. delicatum is found in the same environments as E. granulatum.…”

“…In modern sediments of the Northern Hemisphere, RSBC abundances can reach 15 to 40% of the total dinocyst assemblages, notably in high-productivity areas such as polynyas, coastal upwelling zones, and estuaries (e.g., Hamel et al, 2002;Marret and Zonneveld, 2003;Pospelova et al, 2004Pospelova et al, , 2005Pospelova et al, , 2008Kielt, 2007;Radi et al, 2007;Vásquez-Bedoya et al, 2008;Bouimetarhan et al, 2009;Mertens et al, 2009;Krepakevich and Pospelova, 2010;Limoges et al, 2010;Pospelova and Kim, 2010;Price and Pospelova, 2011). In cold environments such as the Arctic and circum-Arctic regions, RSBCs are often dominant in surface samples as well as in sedimentary sequences.…”

Factors associated with moderate blooms of Pyrodinium bahamense in shallow and restricted subtropical lagoons in the Gulf of California

“…Cysts of P . bahamense are common in marine sediments of the Gulf of Tehuantepec ( V á squez-Bedoya et al 2008, Limoges et al 2010, in which there are also phosphorite sediments (Morales de la Garza and Carranza -Edwards 1995 ) and an upwelling zone, which has led to massive toxic blooms (Cort é s-Altamirano et al 1993 ). In Puerto Rico, P .…”

Distribution of dinoflagellate cysts and other aquatic palynomorphs in surface sediments from the Beagle Channel, Southern Argentina

“…Thus, the occurrence of V. spinosum in the surface samples from the Beagle Channel extends its known distribution to cool temperate regions. Similarly, Echinidinium delicatum and Echinidinium granulatum have been reported mostly from subtropical to tropical regions characterized by meso/eutrophic conditions where temperatures range from 13.4 to 29.6°C (wintersummer) and salinities range from 26.5 to 36.6 (Zonneveld, 1997;Marret and Zonneveld, 2003;Vásquez-Bedoya et al, 2008;Limoges et al, 2010). Echinidinium granulatum has also been documented in the North Pacific (Radi and de Vernal, 2004;Radi et al, 2007;Radi and de Vernal, 2008).…”