Emma L. Cavan
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View article: Quantifying the fish contribution to on-shelf carbon sink: a case study of the Irish Sea
Quantifying the fish contribution to on-shelf carbon sink: a case study of the Irish Sea Open
The marine biological carbon pump plays a crucial role in the sequestration of atmospheric carbon and, therefore, is paramount to global climate regulation. Most existing research on biological carbon sinks has focused on understanding the…
View article: Navigating Challenges in Spatio-temporal Modelling of Antarctic Krill Abundance: Addressing Zero-inflated Data and Misaligned Covariates
Navigating Challenges in Spatio-temporal Modelling of Antarctic Krill Abundance: Addressing Zero-inflated Data and Misaligned Covariates Open
Antarctic krill (Euphausia superba) are among the most abundant species on our planet and serve as a vital food source for many marine predators in the Southern Ocean. In this paper, we utilise statistical spatio-temporal methods to combin…
View article: Observational and Numerical Modeling Constraints on the Global Ocean Biological Carbon Pump
Observational and Numerical Modeling Constraints on the Global Ocean Biological Carbon Pump Open
This study characterized ocean biological carbon pump metrics in the second iteration of the REgional Carbon Cycle Assessment and Processes (RECCAP2) project. The analysis here focused on comparisons of global and biome‐scale regional patt…
View article: Good fisheries management is good carbon management
Good fisheries management is good carbon management Open
Climate change is causing persistent, widespread, and significant impacts on marine ecosystems which are predicted to interact and intensify. Overfishing and associated habitat degradation have put many fish populations and marine ecosyste…
View article: Observational and numerical modeling constraints on the global ocean biological carbon pump
Observational and numerical modeling constraints on the global ocean biological carbon pump Open
This study characterized ocean biological carbon pump metrics in the second iteration of the REgional Carbon Cycle Assessment and Processes (RECCAP2) project, a coordinated, international effort to constrain contemporary ocean carbon air-s…
View article: Valuing carbon sequestration by Antarctic krill faecal pellets
Valuing carbon sequestration by Antarctic krill faecal pellets Open
Marine life contribute to carbon stores helping lock carbon away from the atmosphere. Open-ocean pelagic ecosystems are vastly under-reported in terms of carbon sequestration conservation potential, compared to coastal vegetation ‘blue car…
View article: Concepts Toward a Global Mechanistic Mapping of Ocean Carbon Export
Concepts Toward a Global Mechanistic Mapping of Ocean Carbon Export Open
The gravitational sinking of organic debris from ocean ecosystems is a dominant mechanism of the biological carbon pump (BCP) that regulates the global climate. The fraction of primary production exported downward, the e‐ratio, is an impor…
View article: Bacteria and Archaea Regulate Particulate Organic Matter Export in Suspended and Sinking Marine Particle Fractions
Bacteria and Archaea Regulate Particulate Organic Matter Export in Suspended and Sinking Marine Particle Fractions Open
The biological carbon pump is crucial for the export of particulate organic matter in the ocean. Recent studies on marine microbes have shown the profound influence of bacteria and archaea as regulators of particulate organic matter export.
View article: Comment on egusphere-2022-1227
Comment on egusphere-2022-1227 Open
Abstract. The daily vertical migrations of fish and other metazoans actively transport organic carbon from the ocean surface to depth, contributing to the biological carbon pump. We use an oxygen-constrained, game-theoretic food-web model …
View article: Comment on egusphere-2022-814
Comment on egusphere-2022-814 Open
Abstract. As one of Earth’s most productive marine ecosystems, the Peruvian Upwelling System transports large amounts of biogenic matter from the surface to the deep ocean. Whilst particle sinking velocity is a key factor controlling the b…
View article: Comment on bg-2021-251
Comment on bg-2021-251 Open
Abstract. Throughout the course of their lives fish ingest food containing essential elements, including nitrogen (N), phosphorus (P), and iron (Fe). Some of these elements are retained in the fish body to build new biomass, which acts as …
View article: Commercial fishery disturbance of the global ocean biological carbon sink
Commercial fishery disturbance of the global ocean biological carbon sink Open
Plankton drive a major sink of carbon across the global oceans. Dead plankton, their faeces and the faeces of plankton feeders, form a huge rain of carbon sinking to the seabed and deep ocean, reducing atmospheric CO 2 levels and thus help…
View article: Uncertain response of ocean biological carbon export in a changing world
Uncertain response of ocean biological carbon export in a changing world Open
Earth and Space Science Open Archive This work has been accepted for publication in Nature Geoscience. Version of RecordESSOAr is a venue for early communication or feedback before peer review. Data may be preliminary. Learn more about pre…
View article: “Sinking dead”—How zooplankton carcasses contribute to particulate organic carbon flux in the subantarctic Southern Ocean
“Sinking dead”—How zooplankton carcasses contribute to particulate organic carbon flux in the subantarctic Southern Ocean Open
Zooplankton carcasses are an important, yet understudied, pathway of the biological gravitational pump. To understand their contribution to the downward carbon flux in the subantarctic, carcasses of the copepod Neocalanus tonsus were analy…
View article: Prokaryotes Regulate Particulate Organic Carbon Export in Suspended and Sinking Particle Fractions
Prokaryotes Regulate Particulate Organic Carbon Export in Suspended and Sinking Particle Fractions Open
Background Oceans are crucial regulators of the global carbon cycle. Understanding the oceanic biological carbon pump (BCP) and its contribution to carbon export has been the subject of extensive research. These studies have provided quant…
View article: What the flux? Uncertain response of ocean biological carbon export in a changing world
What the flux? Uncertain response of ocean biological carbon export in a changing world Open
Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Nature Geoscience. ESSOAr is a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about pr…
View article: What the flux? Uncertain response of ocean biological carbon export in a changing world
What the flux? Uncertain response of ocean biological carbon export in a changing world Open
The export flux of organic carbon from the upper ocean is the starting point of the transfer and long term storage of photosynthetically-fixed carbon in the deep ocean. This “biological carbon pump” is a significant component of the global…
View article: Reconciling the Size‐Dependence of Marine Particle Sinking Speed
Reconciling the Size‐Dependence of Marine Particle Sinking Speed Open
Sinking particles are critical to the ocean's “biological pump,” sequestering carbon from the atmosphere. Particles' sinking speeds are a primary factor determining fluxes and subsequent ecological and climatic impacts. While size is a key…
View article: Implications for the mesopelagic microbial gardening hypothesis as determined by experimental fragmentation of Antarctic krill fecal pellets
Implications for the mesopelagic microbial gardening hypothesis as determined by experimental fragmentation of Antarctic krill fecal pellets Open
Detritivores need to upgrade their food to increase its nutritional value. One method is to fragment detritus promoting the colonization of nutrient‐rich microbes, which consumers then ingest along with the detritus; so‐called microbial ga…
View article: Why Krill Swarms Are Important to the Global Climate
Why Krill Swarms Are Important to the Global Climate Open
Ocean life helps keep atmospheric levels of carbon dioxide lower by taking carbon out of the atmosphere and transporting it to the deep ocean, through sinking particles. Antarctic krill live in the Southern Ocean and gather in huge swarms.…
View article: The Role of Zooplankton in Establishing Carbon Export Regimes in the Southern Ocean – A Comparison of Two Representative Case Studies in the Subantarctic Region
The Role of Zooplankton in Establishing Carbon Export Regimes in the Southern Ocean – A Comparison of Two Representative Case Studies in the Subantarctic Region Open
Marine ecosystems regulate atmospheric carbon dioxide levels by transporting andstoring photosynthetically fixed carbon in the ocean’s interior. In particular, thesubantarctic and polar frontal zone of the Southern Ocean is a significant r…
View article: Commercial fishery disturbance of the global open-ocean carbon sink
Commercial fishery disturbance of the global open-ocean carbon sink Open
Primary production in the global oceans fuels multiple ecosystem services including fisheries, and the open-ocean biological carbon sink, which support food security and livelihoods 1 , and the regulation of atmospheric CO 2 levels 2 respe…