Table 1 The Arctic Holocene climate record described by Core GC18.

From: Inference on Paleoclimate Change Using Microbial Habitat Preference in Arctic Holocene Sediments

Early Holocene (~8,000 years BP&)

Mid Holocene

Late Holocene (3,700 ~ 0 years BP)

Unit1 (8,000 ~ 6,200 years BP)

Unit2 (6,200 ~ 4,500 years BP)

Unit3 (4,500 ~ 3,700 years BP)

Minimum sea-ice cover, Limited BSI*, Very low primary production

Sea-ice cover increase, BSI increase, Primary production increase

Minimum sea-ice cover, Maximum BSI, Maximum primary production

Sea-ice cover increase, High BSI, Primary production decrease

Maximum sea-ice cover, Low BSI, Low primary production

  1. &BP: Before Present.
  2. *BSI: Bering Strait Inflow.