Faunal microfossils: indicators of Holocene ecological change in a saline Antarctic lake

The sediment record of the fauna of Ace Lake, a saline meromictic lake in the Vestfold Hills, Antarctica, consists of copepodeggs, spermatophores and exoskeletal fragments, rotifer and tintinnid loricae, and foraminiferal and folliculinid tests. Therelative abundance of these remains, along with oth...

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Bibliographic Details
Published in:Palaeogeography, Palaeoclimatology, Palaeoecology
Main Authors: Cromer, L, Gibson, JAE, Swadling, KM, Ritz, DA
Format: Article in Journal/Newspaper
Language:English
Published: Elsevier Science Bv 2005
Subjects:
Biological Sciences
Ecology
Palaeoecology
Antarctic
Vestfold Hills
Vestfold
Ace Lake
Saline Lake
Antarc*
Antarctica
Rotifer
Online Access:https://doi.org/10.1016/j.palaeo.2005.02.005
http://ecite.utas.edu.au/112798
Description
Summary:The sediment record of the fauna of Ace Lake, a saline meromictic lake in the Vestfold Hills, Antarctica, consists of copepodeggs, spermatophores and exoskeletal fragments, rotifer and tintinnid loricae, and foraminiferal and folliculinid tests. Therelative abundance of these remains, along with other characteristics of the core, allows the development of a coherent picture ofthe progress of Ace Lake from a species-poor, freshwater lake early in the Holocene to a biodiverse marine basin following amarine transgression. Subsequent sea level fall reformed Ace Lake as a saline lake and productivity initially increased afterisolation. After a major event, possibly associated with overturn of the meromictic lake, biodiversity and productivity decreased,and have continued to do so until the present.

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