TY - JOUR
T1 - Effect of El Niño 1997-98 on the snail Astraea undosa (Wood) population along the Baja California western coast
AU - Gluyas Millán, María Georgina
AU - Quiñonez Velazquez, Casimiro
AU - Talavera Maya, Jesús
PY - 2002/12
Y1 - 2002/12
N2 - The effect of the 1997-98 El Niño on the snail Astraea undosa population along the Baja California western coast on biomass changes in June 1997 and July 1998 was evaluated. In 1998, dead snails >40 mm basal diameter were collected and their basal diameter measured. Individual weight and density (snails/10 m2) decreased significantly in 1998 from those registered in 1997, with an average 47% decrease in biomass. We discuss the possible causes of those changes as a function of the disappearance of the Macrocystis pyrifera forest and of an extended period of positive anomalies of the sea surface temperature that were present previous to July 1998.
AB - The effect of the 1997-98 El Niño on the snail Astraea undosa population along the Baja California western coast on biomass changes in June 1997 and July 1998 was evaluated. In 1998, dead snails >40 mm basal diameter were collected and their basal diameter measured. Individual weight and density (snails/10 m2) decreased significantly in 1998 from those registered in 1997, with an average 47% decrease in biomass. We discuss the possible causes of those changes as a function of the disappearance of the Macrocystis pyrifera forest and of an extended period of positive anomalies of the sea surface temperature that were present previous to July 1998.
KW - Astraea undosa
KW - Baja California
KW - Biomass
KW - El Niño 1997-98
KW - Snail
UR - http://www.scopus.com/inward/record.url?scp=0036972090&partnerID=8YFLogxK
M3 - Artículo
SN - 0730-8000
VL - 21
SP - 831
EP - 834
JO - Journal of Shellfish Research
JF - Journal of Shellfish Research
IS - 2
ER -