Abstract
We examined variability in the euphotic zone (0–175 m) picoeukaryotic community based on time-series observations (2011–2013) at Station ALOHA in the North Pacific Subtropical Gyre. By sampling over scales ranging from daily to approximately monthly over 2.25 years, we evaluated the resilience of the picoeukaryotic community to seasonal- to episodic-scale physical disturbances, such as convective mixing and mesoscale processes, respectively. We quantified the frequency and intensity of disturbances that altered upper ocean light and nutrients in the context of the Hawaii Ocean Time-series program climatology, and evaluated picoeukaryotic community resilience based on shifts in dissimilarity in community structure at different depths in the euphotic zone. Our results suggest that in this stratified habitat, picoeukaryote communities are resilient on timescales of days to weeks in response to these physical disturbances, and that the juxtaposition of mesoscale and submesoscale disturbances on more predictable seasonality requires spatially and temporally resolved assessment of community response and resilience. We highlight the value of examining recent (days to weeks) physical forcing of the upper ocean for insight into the influences of physical habitat alterations that structure the contemporaneous plankton community.
| Original language | English |
|---|---|
| Pages (from-to) | S331-S351 |
| Journal | Limnology and Oceanography |
| Volume | 67 |
| Issue number | S1 |
| DOIs | |
| State | Published - Feb 2022 |
Funding
We thank the HOT program science team for their assistance at sea and for providing contextual data used in this study. Thanks also to Markus Lindh, Brianne Maillot, Christine Shulse, and Sean Jungbluth for laboratory support, advice, and assistance on data analyses, and to Edward DeLong and John Eppley for computational support. We are grateful to Benedetto Barone who provided the SLA dataset, and Ramiro Logares who provided comparative sequence analyses during the early stages of this work. We also thank the Captains and Crew of R/V , R/V (University of Hawaiʻi at Mānoa) and R/V (University of Washington). Support for this work derived from U.S. National Science Foundation grants for the HOT program OCE‐1260164 (M.J.C. and D.M.K), C‐MORE (EF‐0424599 to D.M.K.), and the University of Hawaiʻi at Mānoa Denise B. Evans Research Fellowship in Oceanography (Y.M.R.). This work was supported by a grant from the Simons Foundation (721252, D.M.K.; 721221, M.J.C.). This publication includes observations from the WHOI‐Hawaii Ocean Timeseries Site (WHOTS) mooring, which is supported by the National Oceanic and Atmospheric Administration (NOAA) through the Cooperative Institute for Climate and Ocean Research (CICOR) under grants NA17RJ1223 and NA090AR4320129 to the Woods Hole Oceanographic Institution, and by the National Science Foundation grants to the HOT program. Finally, we thank the editors of this Special Issue, especially Michael Pace, for early guidance and input on the focus of this manuscript. corr Kilo Moana Ka‘mikai‐O‐Kanaloa Thomas G. Thompson Limnology and Oceanography We thank the HOT program science team for their assistance at sea and for providing contextual data used in this study. Thanks also to Markus Lindh, Brianne Maillot, Christine Shulse, and Sean Jungbluth for laboratory support, advice, and assistance on data analyses, and to Edward DeLong and John Eppley for computational support. We are grateful to Benedetto Barone who provided the SLAcorr dataset, and Ramiro Logares who provided comparative sequence analyses during the early stages of this work. We also thank the Captains and Crew of R/V Kilo Moana, R/V Ka?mikai-O-Kanaloa (University of Hawai?i at M?noa) and R/V Thomas G. Thompson (University of Washington). Support for this work derived from U.S. National Science Foundation grants for the HOT program OCE-1260164 (M.J.C. and D.M.K), C-MORE (EF-0424599 to D.M.K.), and the University of Hawai?i at M?noa Denise B. Evans Research Fellowship in Oceanography (Y.M.R.). This work was supported by a grant from the Simons Foundation (721252, D.M.K.; 721221, M.J.C.). This publication includes observations from the WHOI-Hawaii Ocean Timeseries Site (WHOTS) mooring, which is supported by the National Oceanic and Atmospheric Administration (NOAA) through the Cooperative Institute for Climate and Ocean Research (CICOR) under grants NA17RJ1223 and NA090AR4320129 to the Woods Hole Oceanographic Institution, and by the National Science Foundation grants to the HOT program. Finally, we thank the editors of this Limnology and Oceanography Special Issue, especially Michael Pace, for early guidance and input on the focus of this manuscript.
| Funders | Funder number |
|---|---|
| NA17RJ1223, NA090AR4320129 | |
| EF‐0424599, OCE‐1260164 | |
| National Oceanic and Atmospheric Administration | |
| Simons Foundation | 721221, 721252 |