"Several dinoflagellate species form cysts as a part of their life cycles. Mapping of dinoflagellate cysts in the sediments provides useful information on species composition, abundance, and biogeographic distribution. Cyst assemblages in the sediments represent a record of the species presence integrated in time. Therefore, investigations on cyst species-composition are also a useful means to reveal species rarely observed in the plankton and to assess the potential for future blooms. . In recent years, many studies have focused on this topic, and the list of new morphotypes and species that produce cysts is continuously increasing. Taking into account the utility of this type of studies, dinoflagellate cyst assemblages were investigated in Alfacs and Fangar bays, two semi-enclosed areas of the Ebro river delta (Catalan coast, Spain, NW Mediterranean Sea). The major economic activity in these areas is mussel farming. Ten (Alfacs Bay) and six (Fangar Bay) stations were sampled in March 2009. Approximately 126 morphotypes were observed in the two bays. The highest number of morphotypes was recorded in Alfacs (105 morphotypes). Common species, such as species of the genus Scrippsiella, Alexandrium, Protoperidinium and Penthapharsodinium were detected. Toxic species were also recorded: A. minutum, A. tamarense, Protoceratium reticulatum and Lingulodinium polyedrum. In addition, several morphotypes corresponded to cysts not yet described in the literature. These new morphotypes include the first detection of resting cysts in the benthic genus Bysmatrum, and the resting cysts of a new Gymnodinium species. . "
Dinoflagellate cyst assemblages from the Ebro river delta (NW Mediterranean Sea) / Anglès, S.; Satta, Cecilia Teodora; Garcés, E.; Lugliè, Antonella Gesuina Laura; Sechi, Nicola; Camp, J.. - (2011). (Intervento presentato al convegno 9th International Conference on Modern and Fossil Dinoflagellates. tenutosi a Liverpool (Inghilterra) nel 28 agosto - 2 settembre).
Dinoflagellate cyst assemblages from the Ebro river delta (NW Mediterranean Sea)
SATTA, Cecilia Teodora;LUGLIÈ, Antonella Gesuina Laura;SECHI, Nicola;
2011-01-01
Abstract
"Several dinoflagellate species form cysts as a part of their life cycles. Mapping of dinoflagellate cysts in the sediments provides useful information on species composition, abundance, and biogeographic distribution. Cyst assemblages in the sediments represent a record of the species presence integrated in time. Therefore, investigations on cyst species-composition are also a useful means to reveal species rarely observed in the plankton and to assess the potential for future blooms. . In recent years, many studies have focused on this topic, and the list of new morphotypes and species that produce cysts is continuously increasing. Taking into account the utility of this type of studies, dinoflagellate cyst assemblages were investigated in Alfacs and Fangar bays, two semi-enclosed areas of the Ebro river delta (Catalan coast, Spain, NW Mediterranean Sea). The major economic activity in these areas is mussel farming. Ten (Alfacs Bay) and six (Fangar Bay) stations were sampled in March 2009. Approximately 126 morphotypes were observed in the two bays. The highest number of morphotypes was recorded in Alfacs (105 morphotypes). Common species, such as species of the genus Scrippsiella, Alexandrium, Protoperidinium and Penthapharsodinium were detected. Toxic species were also recorded: A. minutum, A. tamarense, Protoceratium reticulatum and Lingulodinium polyedrum. In addition, several morphotypes corresponded to cysts not yet described in the literature. These new morphotypes include the first detection of resting cysts in the benthic genus Bysmatrum, and the resting cysts of a new Gymnodinium species. . "I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
