A5065948966- Marine and coastal ecosystems
- Microbial Community Ecology and Physiology
- Marine Biology and Ecology Research
- Protist diversity and phylogeny
- Aquatic Ecosystems and Phytoplankton Dynamics
- Wastewater Treatment and Nitrogen Removal
- Marine Bivalve and Aquaculture Studies
- Phosphorus and nutrient management
- Ocean Acidification Effects and Responses
- Oceanographic and Atmospheric Processes
- Environmental Toxicology and Ecotoxicology
- Marine Toxins and Detection Methods
- Genomics and Phylogenetic Studies
- Geology and Paleoclimatology Research
- Diatoms and Algae Research
- Soil and Water Nutrient Dynamics
- Isotope Analysis in Ecology
- Environmental DNA in Biodiversity Studies
- Physiological and biochemical adaptations
- Bacteriophages and microbial interactions
- Methane Hydrates and Related Phenomena
- Marine and coastal plant biology
- Advanced Proteomics Techniques and Applications
- Coagulation, Bradykinin, Polyphosphates, and Angioedema
- Aquaculture Nutrition and Growth
Lamont-Doherty Earth Observatory
2016-2025
Columbia University
2016-2025
University of Hawaiʻi at Mānoa
2012-2024
Environmental Earth Sciences
2024
University of Tennessee at Knoxville
2021
Stony Brook University
2021
Consumer Healthcare Products Association
2021
Woods Hole Oceanographic Institution
2006-2015
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
2013
Oregon State University
2002
Current sampling of genomic sequence data from eukaryotes is relatively poor, biased, and inadequate to address important questions about their biology, evolution, ecology; this Community Page describes a resource 700 transcriptomes marine microbial help understand role in the world's oceans.
Coccolithophores have influenced the global climate for over 200 million years. These marine phytoplankton can account 20 per cent of total carbon fixation in some systems. They form blooms that occupy hundreds thousands square kilometres and are distinguished by their elegantly sculpted calcium carbonate exoskeletons (coccoliths), rendering them visible from space. Although coccolithophores export organic matter calcite to sea floor, they also release CO2 calcification process. Hence, a...
Phosphorus (P) is a critical driver of phytoplankton growth and ecosystem function in the ocean. Diatoms are an abundant class marine that responsible for significant amounts primary production. With control they exert on oceanic carbon cycle, there have been number studies focused how diatoms respond to limiting macro micronutrients such as iron nitrogen. However, diatom physiological responses P deficiency poorly understood. Here, we couple deep sequencing transcript tags quantitative...
Dissolved organic matter (DOM) in the oceans is one of largest pools reduced carbon on Earth, comparable size to atmospheric CO 2 reservoir. A vast number compounds are present DOM, and they play important roles all major element cycles, contribute storage ocean, support marine ecosystems, facilitate interactions between organisms. At heart DOM cycle lie molecular-level relationships individual members ocean microbiome that produce consume them. In past, these connections have eluded clear...
Harmful algal blooms (HABs) cause significant economic and ecological damage worldwide. Despite considerable efforts, a comprehensive understanding of the factors that promote these has been lacking, because biochemical pathways facilitate their dominance relative to other phytoplankton within specific environments have not identified. Here, biogeochemical measurements showed harmful alga Aureococcus anophagefferens outcompeted co-occurring in estuaries with elevated levels dissolved organic...
Abstract. Inorganic phosphorus (SRP) concentrations in the subtropical North Atlantic are some of lowest global ocean and have been hypothesized to constrain primary production. Based upon data from several transect cruises this region, it has that dissolved organic (DOP) supports a significant fraction production Atlantic. In study, time-series biogeochemistry is presented for Bermuda Time-series Study site, including rates export. Most parameters seasonal pattern, although year-over-year...
The biologically important constituents of the dissolved organic phosphorus (DOP) pool, their bioavailability, and cycling in coastal systems are still poorly understood. Here we use enzyme alkaline phosphatase as a metric DOP bioavailability track activity this system. We observed (APA) >0.2-µm size fraction all surface samples tested during an Oregon coast cruise August 2001. Although there was not significant trend between APA phosphate concentration data set whole, chlorophyll...
Author Posting. © Oceanography Society, 2007. This article is posted here by permission of Society for personal use, not redistribution. The definitive version was published in 20, 2 (2007): 110-116.
Phytoplankton alter their biochemical composition according to nutrient availability, such that bulk elemental varies across oceanic provinces. However, the links between plankton and variation in biogeochemical cycling of nutrients remain largely unknown. In a survey phytoplankton phosphorus stress western North Atlantic, we found phosphorus-depleted subtropical Sargasso Sea were enriched polyphosphate (polyP) compared with nutrient-rich temperate waters, contradicting canonical...
Diverse communities of marine phytoplankton carry out half global primary production. The vast diversity the has long perplexed ecologists because these organisms coexist in an isotropic environment while competing for same basic resources (e.g., inorganic nutrients). Differential niche partitioning is one hypothesis to explain this "paradox plankton," but it difficult quantify and track variation metabolism situ. Here, we use quantitative metatranscriptome analyses examine pathways nitrogen...
Alkaline phosphatase (AP) activity (APA) was measured at several stations in the North Pacific Subtropical Gyre July 2008, and a series of nutrient addition experiments: nitrate plus ammonium (+N) or phosphate (+P), to study APA regulation evaluate capacity picoplankton organisms (i.e., 0.2–2‐µm size range) access AP‐hydrolyzable fraction dissolved organic phosphorus (DOP). The data indicated primary limitation biomass by nitrogen. Both total (measured with soluble DOP analog) cell‐specific...
A diverse microbial assemblage in the ocean is responsible for nearly half of global primary production. It has been hypothesized and experimentally demonstrated that nutrient loading can stimulate blooms large eukaryotic phytoplankton oligotrophic systems. Although central to balancing biogeochemical models, knowledge metabolic traits govern dynamics these bloom-forming limited. We used metatranscriptomic techniques identify basis functional group-specific may drive shift between net...
The phosphorus redox cycle Phosphorus in the oceans cycles between +5 and +3 oxidation states. Most of oceans' is present as oxidized bioavailable phosphate (+5) compounds. Reduced organophosphorus compounds are also but at much lower concentrations. Through field measurements western tropical North Atlantic Ocean a series laboratory incubations, Van Mooy et al. measured fast reduction rates small appreciable amount phosphates by plankton communities, forming phosphites phosphonates (see...
Abstract Establishing virus–host relationships has historically relied on culture-dependent approaches. Here we report the use of marine metatranscriptomics to probe relationships. Statistical co-occurrence analyses dsDNA, ssRNA and dsRNA viral markers polyadenylation-selected RNA sequences from microbial communities dominated by Aureococcus anophagefferens (Quantuck Bay, NY), diatoms (Narragansett RI) show active infections diverse giant viruses (NCLDVs) associated with algal nonalgal...
Abstract Mesoscale eddies have been shown to support elevated dinitrogen (N 2 ) fixation rates (NFRs) and abundances of N ‐fixing microorganisms (diazotrophs), but the mechanisms underlying these observations are not well understood. We sampled two pairs mesoscale cyclones anticyclones in North Pacific Subtropical Gyre 2017 2018 compared our with seasonal patterns from Hawaii Ocean Time‐series (HOT) program. Consistent previous reports, we found that NFRs were anomalously high for this...
Alkaline phosphatase activity is a common marker of phosphate stress in many phytoplankton, but it has been difficult to attribute alkaline specific organisms or groups phytoplankton the field with traditional biochemical procedures. A new substrate, ELF-97 (enzyme-labeled fluorescence), shows promise this regard. When group cleaved from reagent, remaining molecule precipitates near site enzyme activity, thus fluorescently tagging cells activity. We characterized labeling axenic cultures...