Distribution of benthic foraminifera in surface sediments east of New Zealand, Southwest Pacific Ocean ...

• Main Authors: Hayward, Bruce William, Neil, Helen L, Carter, Rowan, Grenfell, Hugh R, Hayward, Jessica J
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2002
• Subjects: Drilling/drill rig; Multiple investigations; Leg90; Leg181; Glomar Challenger; Joides Resolution; Deep Sea Drilling Project DSDP; Ocean Drilling Program ODP; Antarc*; Antarctic
• Online Access: https://dx.doi.org/10.1594/pangaea.690806; https://doi.pangaea.de/10.1594/PANGAEA.690806

This study investigates which combination of environmental factors most strongly influences the distribution patterns of benthic foraminferal tests (>0.63 µm) in a region bisected by the Subtropical Front, east of New Zealand. Seafloor sample sites extend from outer shelf (90 m) to abyssal (4700 m) depths, across substrates ranging from biogenic/terrigenous gravelly sand to hemipelagic mud, and occur under the influence of Antarctic intermediate water (AAIW) and circumpolar deep waters as well as receiving detritus from both Subtropical and Subantarctic surface water masses. Elevated values of the planktic foraminiferal fragmentation index and reworked small Paleogene planktic foraminifera at outer shelf and bathyal depths coincide with areas of strong bottom currents. Q-mode cluster analysis on the census counts of 398 benthic species clusters the 66 samples into three large groups (shallow, bathyal, abyssal), and at a lower level 10 mappable associations are recognised. A combination of canonical ... : Supplement to: Hayward, Bruce William; Neil, Helen L; Carter, Rowan; Grenfell, Hugh R; Hayward, Jessica J (2002): Factors influencing the distribution patterns of Recent deep-sea benthic foraminifera, east of New Zealand, Southwest Pacific Ocean. Marine Micropaleontology, 46(1-2), 139-176 ...