File(s) held in another repository
Title of Dataset
Data from: Climatic forcing of Quaternary deep-sea benthic communities in the North Pacific Ocean
Author of Dataset
Hunt, Gene2
Cronin, Thomas M.3
Hokanishi, Natsumi4
Kawahata, Hodaka5
Tsujimoto, Akira6
Ishitake, Miho7
Yasuhara, Moriaki1
Date of Dataset Creation
There is a growing evidence that changes in deep-sea benthic ecosystems are modulated by climate changes, but most evidence to date comes from the North Atlantic Ocean. Here we analyze new ostracod and published foraminiferal records for the last 250,000 years on Shatsky Rise in the North Pacific Ocean. Using linear models, we evaluate statistically the ability of environmental drivers (temperature, productivity, and seasonality of productivity) to predict changes in faunal diversity, abundance and composition. These microfossil data show glacial-interglacial shifts in overall abundances and species diversities that are low during glacial intervals and high during interglacials. These patterns replicate those previously documented in the North Atlantic Ocean, suggesting that the climatic forcing of the deep-sea ecosystem is widespread, and possibly global in nature. However, these results also reveal differences with prior studies that probably reflect the isolated nature of Shatsky Rise as a remote oceanic plateau. Ostracod assemblages on Shatsky Rise are highly endemic but of low diversity, consistent with the limited dispersal potential of these animals. Benthic foraminifera, by contrast, have much greater dispersal ability and their assemblages at Shatsky Rise show diversities typical for deep-sea faunas in other regions. Statistical analyses also reveal ostracod–foraminferal differences in relationships between environmental drivers and biotic change. Rarefied diversity is best explained as a hump-shaped function of surface productivity in ostracods, but as having a weak and positive relationship with temperature in foraminifera. Abundance shows a positive relationship with both productivity and seasonality of productivity in foraminifera, and a hump-shaped relationship in ostracods. Finally, species composition in ostracods is influenced by both temperature and productivity, but only a temperature effect is evident in foraminifera. Though complex in detail, the global-scale link between deep-sea ecosystems and Quaternary climate changes underscores the interaction between the physical and biological components of paleoceanographical research to better understand the history of the biosphere.
Yasuhara, M, Hunt, G, Cronin, TM, Hokanishi, N, Kawahata, H, Tsujimoto, A, Ishitake, M. (2011). Data from: Climatic forcing of Quaternary deep-sea benthic communities in the North Pacific Ocean. [Data File]. Access to Files at
Subject (RGC Codes)
M1 — Biological Sciences — 生物科學
  • 1105 — Ecology — 生態學
Subject (ANZSRC)
  • 0602 — ECOLOGY — 生態學
    • 060205 — Marine and Estuarine Ecology (incl. Marine Ichthyology) — 海洋與河口生態
Species diversity
deep-sea ecology
  1. Univ Hong Kong, Sch Biol Sci, Swire Inst Marine Sci, Hong Kong, Hong Kong, Peoples R China ; Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China ; Smithsonian Inst, Dept Paleobiol, Natl Museum Nat Hist, Washington, DC 20013 USA ; Kochi Univ, Ctr Adv Marine Core Res, Nankoku, Kochi 7838502, Japan
  2. Smithsonian Inst, Dept Paleobiol, Natl Museum Nat Hist, Washington, DC 20013 USA
  3. US Geol Survey, Natl Ctr, Reston, VA 20192 USA
  4. Univ Tokyo, Earthquake Res Inst, Bunkyo Ku, Tokyo 1130032, Japan
  5. Univ Tokyo, Atmosphere & Ocean Res Inst, Kashiwa, Chiba 2778564, Japan
  6. Shimane Univ, Fac Educ, Matsue, Shimane 6908504, Japan
  7. Sumika Chem Anal Serv Ltd, Anal Serv, Mkt Div, Chiba Grp, Sodegaura, Chiba 2990266, Japan