Publication Date:
2021-07-14
Description:
Body mass changes, mortality and nest and egg loss of the Galapagos tortoise Geochelone vandenburghi were studiedon Alcedo Volcano, Isabela Island, before, during and after the El Niño event of 1997–8. The results suggest that fewertortoises in the pre- and post-Niño periods gained body mass than lost, while during the El Niño event itself thetortoises gained mass. Before and after the El Niño, there was no mortality attributable to flooding in the ravines onthe slopes of the volcano, but during the El Niño event 36 tortoises were found dead in the ravines. This is 〈 1 % ofthe total population. Nest and egg loss due to fungus damage was low (〈10 %) in the pre- and post-Niño periods, but during the event a significantly higher proportion (80 % of 76 eggs) were destroyed by fungal infection.
Description:
Charles Darwin Foundation
Description:
Galapagos Conservation Fund
Description:
Frankfurt Zoological Society
Keywords:
Biology
;
Environment
;
Isabela Island
;
Geochelone vandenburghi
;
Body mass
;
Mortality
;
Nest
;
Alcedo Volcano
Repository Name:
AquaDocs
Type:
article
,
TRUE
Format:
application/pdf
Format:
application/pdf
Format:
7-10
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