The History and Evolution of PMEL: Purposeful Research that Impacts Environmental Policy DOI Creative Commons
Michelle M. McClure, Christopher L. Sabine, Richard A. Feely

et al.

Oceanography, Journal Year: 2023, Volume and Issue: unknown

Published: Jan. 1, 2023

The Pacific Marine Environmental Laboratory (PMEL) conducts global and regional oceanographic research in support of the National Oceanic Atmospheric Administration’s (NOAA’s) three mission areas: (1) understanding predicting changes climate, weather, oceans, coasts; (2) sharing that knowledge with others; (3) conserving managing coastal marine ecosystems resources. Since its establishment 1973, PMEL’s work has ranged from pole to across ocean. lab’s examined ocean structure function physical, chemical, biological realms, informed supported development US policy these areas.

Language: Английский

Metazoan Diversity and Its Drivers: An eDNA Survey in the Pacific Gateway of a Changing Arctic Ocean DOI Creative Commons
Gerlien Verhaegen, Tatsuya Kawakami, Ayla Murray

et al.

Environmental DNA, Journal Year: 2025, Volume and Issue: 7(2)

Published: March 1, 2025

ABSTRACT Climate change drives species to adapt or undergo range shifts survive. The Arctic Ocean, experiencing more drastic environmental changes than any other ocean, has two primary inflow regions that facilitate these shifts: the wide, deep Atlantic Gateway and narrow, shallow Pacific Gateway. Environmental DNA (eDNA) surveys have proven be effective in characterizing community composition understanding its ecological drivers. We conducted first COI marker‐based eDNA survey analyzed seawater samples from various geographic regions, depths, water masses across Bering Strait, Chukchi Sea, South Beaufort Sea. Metazoan taxa 15 different phyla indicator for were identified. characterized a highly diverse neritic fauna Strait aligning with known locations of benthic hotspots. On slope we observed transitions copepod‐dominated epipelagic waters cnidarian‐ sponge‐dominated deeper areas. Alpha diversity peaked near seabed coastlines was highest within warmest Alaskan Coastal Water mass. linked metazoan communities variables, being associated higher temperatures fluorescence, majority them lower salinities. This included mostly Pseudocalanus copepod verongiid sponges. While rising might enhance alpha diversity, anticipate this will primarily due influx warmer fresher masses. Several taxa, including bivalve Macoma calcarea seastar Leptasterias arctica , as well jellyfish Chrysaora melanaster Triconia borealis colder, saltier likely negatively impacted by ongoing change. Our study successfully rapidly changing Ocean.

Language: Английский

Citations

0
Long-Term Biophysical Observations and Climate Impacts in US Arctic Marine Ecosystems DOI Creative Commons
Phyllis J. Stabeno, Shaun W. Bell,

Catherine L. Berchok

et al.

Oceanography, Journal Year: 2023, Volume and Issue: unknown

Published: Jan. 1, 2023

In 1995, the first of a nearly continuous sequence biophysical moorings was deployed at site (M2) on southeastern Bering Sea shelf. Over next 15 years, 10 additional mooring sites were initiated. The resultant long-term array extends over 1,800 km from southern to northern Chukchi Sea, covering most US Arctic. It provides full range oceanographic data for researchers, stakeholders, and managers. addition, these sets have been critical validation regional ocean models. temperature quantified warming formed basis understanding how warmer temperatures loss sea ice are modifying high-latitude marine ecosystems. Changes observed in context observations program include delayed spring bloom, low abundances large crustacean zooplankton crab species, seabird die-offs, changes acidification, northward expansion subarctic fish shifts ranges mammal species.

Language: Английский

Citations

9
Stratification and summer protist communities in the Arctic influenced coastal systems of Nunavik (Québec, Canada) DOI Creative Commons
Loïc Jacquemot, Jean‐Éric Tremblay,

Carlee Morency

et al.

Frontiers in Marine Science, Journal Year: 2024, Volume and Issue: 11

Published: Jan. 29, 2024

Phytoplankton and other protists in the 3 µm to 50 size fraction are grazed on by zooplankton form base of Arctic marine food webs essential for local indigenous communities. Anthropogenic climate change is increasing stratification over much Ocean surrounding seas, but influence protist communities more coastal regions along Eastern Hudson Bay, Strait Ungava Bay little known. We used 18S rRNA rDNA amplicon sequencing during two consecutive summers (2017 2018) detailed water column properties compare under contrasting regimes Complex. found that surface mixed layer which river runoff, was strongly stratified dominated mixotrophic bacterivorous taxa, mostly dinoflagellates Heterocapsa rotundata Gymnodiniales spp., a diatom-dominated community at Subsurface Chlorophyll Maximum (SCM), persisted deeper colder saline water. The massive effort retrieved seven putative toxic algae from upper warmer waters eastern Bay. These included Pseudo-nitzschia spp. potentially harmful dinoflagellates, most notably Alexandrium sp. persistent weaker conditions summer favored different diatom community, Chaetoceros Thalassiosira small photosynthetic flagellates including Phaeocystis pouchetii Micromonas polaris . As freshwater input increases intensifies Arctic, our findings suggest dinoflagellate-based seen may also be receiving increased runoff. could favor algal events. were nearer consisted diverse species able profit ongoing nutrient due tidal mixing. results greater resilience this tidally influenced Bays lacking larger rivers inputs.

Language: Английский

Citations

1
REVAMP: Rapid Exploration and Visualization through an Automated Metabarcoding Pipeline DOI Creative Commons
Sean M. McAllister,

Christopher Paight,

Emily Norton

et al.

Oceanography, Journal Year: 2023, Volume and Issue: unknown

Published: Jan. 1, 2023

The revolution and acceleration in DNA sequencing over the past three decades has driven development of new biomolecular tools like environmental (eDNA) metabarcoding for characterizing marine biodiversity. In order to operationalize eDNA approaches routine NOAA observatories, bioinformatic programs improved organismal reference barcodes are needed serve accurate reliable biological data a timely manner. To address these needs, we present Rapid Exploration Visualization through an Automated Metabarcoding Pipeline (REVAMP), which provides streamlined end-to-end processing from raw reads exploration, visualization, hypothesis generation. One benefit REVAMP is ability iteratively assess marker gene database performance. Here, used filtered that only included sequences uploaded prior specified date cutoffs 1995 2022 analyze changes taxonomic assignments, revealing patterns uneven improvement assignment depth accuracy across time, region, sets. This work highlights need targeted efforts key regional taxa importance such improving biomonitoring future.

Language: Английский

Citations

3
The History and Evolution of PMEL: Purposeful Research that Impacts Environmental Policy DOI Creative Commons
Michelle M. McClure, Christopher L. Sabine, Richard A. Feely

et al.

Oceanography, Journal Year: 2023, Volume and Issue: unknown

Published: Jan. 1, 2023

The Pacific Marine Environmental Laboratory (PMEL) conducts global and regional oceanographic research in support of the National Oceanic Atmospheric Administration’s (NOAA’s) three mission areas: (1) understanding predicting changes climate, weather, oceans, coasts; (2) sharing that knowledge with others; (3) conserving managing coastal marine ecosystems resources. Since its establishment 1973, PMEL’s work has ranged from pole to across ocean. lab’s examined ocean structure function physical, chemical, biological realms, informed supported development US policy these areas.

Language: Английский

Citations

0