Michel C Boufadel, Tamay Özgökmen, Scott A Socolofsky, Vassiliki H Kourafalou, Ruixue Liu, Kenneth Lee
{"title":"Oil Transport Following the <i>Deepwater Horizon</i> Blowout.","authors":"Michel C Boufadel, Tamay Özgökmen, Scott A Socolofsky, Vassiliki H Kourafalou, Ruixue Liu, Kenneth Lee","doi":"10.1146/annurev-marine-040821-104411","DOIUrl":"https://doi.org/10.1146/annurev-marine-040821-104411","url":null,"abstract":"<p><p>The <i>Deepwater Horizon</i> oil spill in the Gulf of Mexico in 2010 was the largest in US history, covering more than 1,000 km of shorelines and causing losses that exceeded $50 billion. While oil transformation processes are understood at the laboratory scale, the extent of the <i>Deepwater Horizon</i> spill made it challenging to integrate these processes in the field. This review tracks the <i>Deepwater Horizon</i> oil during its journey from the Mississippi Canyon block 252 (MC252) wellhead, first discussing the formation of the oil and gas plume and the ensuing oil droplet size distribution, then focusing on the behavior of the oil on the water surface with and without waves. It then reports on massive drifter experiments in the Gulf of Mexico and the impact of the Mississippi River on the oil transport. Finally, it concludes by addressing the formation of oil-particle aggregates. Although physical processes lend themselves to numerical modeling, we attempted to elucidate them without using advanced modeling, as our goal is to enhance communication among scientists, engineers, and other entities interested in oil spills.</p>","PeriodicalId":55508,"journal":{"name":"Annual Review of Marine Science","volume":"15 ","pages":"67-93"},"PeriodicalIF":17.3,"publicationDate":"2023-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10668529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Melissa Moulton, Sutara H Suanda, Jessica C Garwood, Nirnimesh Kumar, Melanie R Fewings, James M Pringle
{"title":"Exchange of Plankton, Pollutants, and Particles Across the Nearshore Region.","authors":"Melissa Moulton, Sutara H Suanda, Jessica C Garwood, Nirnimesh Kumar, Melanie R Fewings, James M Pringle","doi":"10.1146/annurev-marine-032122-115057","DOIUrl":"https://doi.org/10.1146/annurev-marine-032122-115057","url":null,"abstract":"<p><p>Exchange of material across the nearshore region, extending from the shoreline to a few kilometers offshore, determines the concentrations of pathogens and nutrients near the coast and the transport of larvae, whose cross-shore positions influence dispersal and recruitment. Here, we describe a framework for estimating the relative importance of cross-shore exchange mechanisms, including winds, Stokes drift, rip currents, internal waves, and diurnal heating and cooling. For each mechanism, we define an exchange velocity as a function of environmental conditions. The exchange velocity applies for organisms that keep a particular depth due to swimming or buoyancy. A related exchange diffusivity quantifies horizontal spreading of particles without enough vertical swimming speed or buoyancy to counteract turbulent velocities. This framework provides a way to determinewhich processes are important for cross-shore exchange for a particular study site, time period, and particle behavior.</p>","PeriodicalId":55508,"journal":{"name":"Annual Review of Marine Science","volume":"15 ","pages":"167-202"},"PeriodicalIF":17.3,"publicationDate":"2023-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10672079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rebecca S Robinson, Sandi M Smart, Jonathan D Cybulski, Kelton W McMahon, Basia Marcks, Catherine Nowakowski
{"title":"Insights from Fossil-Bound Nitrogen Isotopes in Diatoms, Foraminifera, and Corals.","authors":"Rebecca S Robinson, Sandi M Smart, Jonathan D Cybulski, Kelton W McMahon, Basia Marcks, Catherine Nowakowski","doi":"10.1146/annurev-marine-032122-104001","DOIUrl":"https://doi.org/10.1146/annurev-marine-032122-104001","url":null,"abstract":"<p><p>Nitrogen is a major limiting element for biological productivity, and thus understanding past variations in nitrogen cycling is central to understanding past and future ocean biogeochemical cycling, global climate cycles, and biodiversity. Organic nitrogen encapsulated in fossil biominerals is generally protected from alteration, making it an important archive of the marine nitrogen cycle on seasonal to million-year timescales. The isotopic composition of fossil-bound nitrogen reflects variations in the large-scale nitrogen inventory, local sources and processing, and ecological and physiological traits of organisms. The ability to measure trace amounts of fossil-bound nitrogen has expanded with recent method developments. In this article, we review the foundations and ground truthing for three important fossil-bound proxy types: diatoms, foraminifera, and corals. We highlight their utility with examples of high-resolution evidence for anthropogenic inputs of nitrogen to the oceans, glacial-interglacial-scale assessments of nitrogen inventory change, and evidence for enhanced CO<sub>2</sub> drawdown in the high-latitude ocean. Future directions include expanded method development, characterization of ecological and physiological variation, and exploration of extended timescales to push reconstructions further back in Earth's history.</p>","PeriodicalId":55508,"journal":{"name":"Annual Review of Marine Science","volume":"15 ","pages":"407-430"},"PeriodicalIF":17.3,"publicationDate":"2023-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9240698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Novel Insights into Marine Iron Biogeochemistry from Iron Isotopes.","authors":"Jessica N Fitzsimmons, Tim M Conway","doi":"10.1146/annurev-marine-032822-103431","DOIUrl":"https://doi.org/10.1146/annurev-marine-032822-103431","url":null,"abstract":"<p><p>The micronutrient iron plays a major role in setting the magnitude and distribution of primary production across the global ocean. As such, an understanding of the sources, sinks, and internal cycling processes that drive the oceanic distribution of iron is key to unlocking iron's role in the global carbon cycle and climate, both today and in the geologic past. Iron isotopic analyses of seawater have emerged as a transformative tool for diagnosing iron sources to the ocean and tracing biogeochemical processes. In this review, we summarize the end-member isotope signatures of different iron source fluxes and highlight the novel insights into iron provenance gained using this tracer. We also review ways in which iron isotope fractionation might be used to understand internal oceanic cycling of iron, including speciation changes, biological uptake, and particle scavenging. We conclude with an overview of future research needed to expand the utilization of this cutting-edge tracer.</p>","PeriodicalId":55508,"journal":{"name":"Annual Review of Marine Science","volume":"15 ","pages":"383-406"},"PeriodicalIF":17.3,"publicationDate":"2023-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10663345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Global Fisheries Science Documents Human Impacts on Oceans: The <i>Sea Around Us</i> Serves Civil Society in the Twenty-First Century.","authors":"Dirk Zeller, Maria L D Palomares, Daniel Pauly","doi":"10.1146/annurev-marine-030322-113814","DOIUrl":"https://doi.org/10.1146/annurev-marine-030322-113814","url":null,"abstract":"<p><p>Fishing provides the world with an important component of its food supply, but it also negatively impacts the biodiversity of marine and freshwater ecosystems, especially when industrial fishing is involved. To mitigate these impacts, civil society needs access to fisheries data (i.e., catches and catch-derived indicators of these impacts). Such data, however, must be more comprehensive than the official fisheries statistics supplied to the Food and Agriculture Organization of the United Nations (FAO) by its member countries, which shape public policy in spite of their deficiencies, notably underestimating small-scale fisheries. This article documents the creation, based on the geographically coarse FAO data, of a database and website (<b>https://www.seaaroundus.org</b>) that provides free reconstructed (i.e., corrected) catch data by ecosystem, country, species, gear type, commercial value, etc., to any interested person, along with catch-derived indicators from 1950 to the near present for the entire world.</p>","PeriodicalId":55508,"journal":{"name":"Annual Review of Marine Science","volume":"15 ","pages":"147-165"},"PeriodicalIF":17.3,"publicationDate":"2023-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10668528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
David A Siegel, Timothy DeVries, Ivona Cetinić, Kelsey M Bisson
{"title":"Quantifying the Ocean's Biological Pump and Its Carbon Cycle Impacts on Global Scales.","authors":"David A Siegel, Timothy DeVries, Ivona Cetinić, Kelsey M Bisson","doi":"10.1146/annurev-marine-040722-115226","DOIUrl":"https://doi.org/10.1146/annurev-marine-040722-115226","url":null,"abstract":"<p><p>The biological pump transports organic matter, created by phytoplankton productivity in the well-lit surface ocean, to the ocean's dark interior, where it is consumed by animals and heterotrophic microbes and remineralized back to inorganic forms. This downward transport of organic matter sequesters carbon dioxide from exchange with the atmosphere on timescales of months to millennia, depending on where in the water column the respiration occurs. There are three primary export pathways that link the upper ocean to the interior: the gravitational, migrant, and mixing pumps. These pathways are regulated by vastly different mechanisms, making it challenging to quantify the impacts of the biological pump on the global carbon cycle. In this review, we assess progress toward creating a global accounting of carbon export and sequestration via the biological pump and suggest a path toward achieving this goal.</p>","PeriodicalId":55508,"journal":{"name":"Annual Review of Marine Science","volume":"15 ","pages":"329-356"},"PeriodicalIF":17.3,"publicationDate":"2023-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9240729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E Di Lorenzo, T Xu, Y Zhao, M Newman, A Capotondi, S Stevenson, D J Amaya, B T Anderson, R Ding, J C Furtado, Y Joh, G Liguori, J Lou, A J Miller, G Navarra, N Schneider, D J Vimont, S Wu, H Zhang
{"title":"Modes and Mechanisms of Pacific Decadal-Scale Variability.","authors":"E Di Lorenzo, T Xu, Y Zhao, M Newman, A Capotondi, S Stevenson, D J Amaya, B T Anderson, R Ding, J C Furtado, Y Joh, G Liguori, J Lou, A J Miller, G Navarra, N Schneider, D J Vimont, S Wu, H Zhang","doi":"10.1146/annurev-marine-040422-084555","DOIUrl":"10.1146/annurev-marine-040422-084555","url":null,"abstract":"<p><p>The modes of Pacific decadal-scale variability (PDV), traditionally defined as statistical patterns of variance, reflect to first order the ocean's integration (i.e., reddening) of atmospheric forcing that arises from both a shift and a change in strength of the climatological (time-mean) atmospheric circulation. While these patterns concisely describe PDV, they do not distinguish among the key dynamical processes driving the evolution of PDV anomalies, including atmospheric and ocean teleconnections and coupled feedbacks with similar spatial structures that operate on different timescales. In this review, we synthesize past analysis using an empirical dynamical model constructed from monthly ocean surface anomalies drawn from several reanalysis products, showing that the PDV modes of variance result from two fundamental low-frequency dynamical eigenmodes: the North Pacific-central Pacific (NP-CP) and Kuroshio-Oyashio Extension (KOE) modes. Both eigenmodes highlight how two-way tropical-extratropical teleconnection dynamics are the primary mechanisms energizing and synchronizing the basin-scale footprint of PDV. While the NP-CP mode captures interannual- to decadal-scale variability, the KOE mode is linked to the basin-scale expression of PDV on decadal to multidecadal timescales, including contributions from the South Pacific.</p>","PeriodicalId":55508,"journal":{"name":"Annual Review of Marine Science","volume":"15 ","pages":"249-275"},"PeriodicalIF":17.3,"publicationDate":"2023-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10542540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Organic Matter Supply and Utilization in Oxygen Minimum Zones.","authors":"Anja Engel, Rainer Kiko, Marcus Dengler","doi":"10.1146/annurev-marine-041921-090849","DOIUrl":"https://doi.org/10.1146/annurev-marine-041921-090849","url":null,"abstract":"<p><p>Organic matter (OM) plays a significant role in the formation of oxygen minimum zones (OMZs) and associated biogeochemical cycling. OM supply processes to the OMZ include physical transport, particle formation, and sinking as well as active transport by migrating zooplankton and nekton. In addition to the availability of oxygen and other electron acceptors, the remineralization rate of OM is controlled by its biochemical quality. Enhanced microbial respiration of OM can induce anoxic microzones in an otherwise oxygenated water column. Reduced OM degradation under low-oxygen conditions, on the other hand, may increase the CO<sub>2</sub> storage time in the ocean. Understanding the interdependencies between OM and oxygen cycling is of high relevance for an ocean facing deoxygenation as a consequence of global warming. In this review, we describe OM fluxes into and cycling within two large OMZs associated with eastern boundary upwelling systems that differ greatly in the extent of oxygen loss: the highly oxygen-depleted OMZ in the tropical South Pacific and the moderately hypoxic OMZ in the tropical North Atlantic. We summarize new findings from a large German collaborative research project, Collaborative Research Center 754 (SFB 754), and identify knowledge gaps and future research priorities.</p>","PeriodicalId":55508,"journal":{"name":"Annual Review of Marine Science","volume":"14 ","pages":"355-378"},"PeriodicalIF":17.3,"publicationDate":"2022-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39367705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Physiological Consequences of Oceanic Environmental Variation: Life from a Pelagic Organism's Perspective.","authors":"Mark W Denny, W Wesley Dowd","doi":"10.1146/annurev-marine-040221-115454","DOIUrl":"https://doi.org/10.1146/annurev-marine-040221-115454","url":null,"abstract":"<p><p>To better understand life in the sea, marine scientists must first quantify how individual organisms experience their environment, and then describe how organismal performance depends on that experience. In this review, we first explore marine environmental variation from the perspective of pelagic organisms, the most abundant life forms in the ocean. Generation time, the ability to move relative to the surrounding water (even slowly), and the presence of environmental gradients at all spatial scales play dominant roles in determining the variation experienced by individuals, but this variation remains difficult to quantify. We then use this insight to critically examine current understanding of the environmental physiology of pelagic marine organisms. Physiologists have begun to grapple with the complexity presented by environmental variation, and promising frameworks exist for predicting and/or interpreting the consequences for physiological performance. However, new technology needs to be developed and much difficult empirical work remains, especially in quantifying response times to environmental variation and the interactions among multiple covarying factors. We call on the field of global-change biology to undertake these important challenges.</p>","PeriodicalId":55508,"journal":{"name":"Annual Review of Marine Science","volume":"14 ","pages":"25-48"},"PeriodicalIF":17.3,"publicationDate":"2022-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39232002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}