ORCID Profile
0000-0003-3601-9072
Current Organisation
Universiteit Utrecht
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Other Chemical Sciences | Environmental Chemistry (Incl. Atmospheric Chemistry) | Environmental Sciences Not Elsewhere Classified | Geochronology And Isotope Geochemistry | Geochemistry | Inorganic Geochemistry | Organic Geochemistry | Isotope Geochemistry
ANZSRC Socio-Economic Objective (SEO)
Physical and chemical conditions | Integrated (ecosystem) assessment and management | Estuarine and lagoon areas | Ecosystem Assessment and Management of Coastal and Estuarine Environments | Physical and Chemical Conditions of Water in Coastal and Estuarine Environments |
Related Links
Publications
Organism-Sediment Interactions Govern Post-Hypoxia Recovery of Ecosystem Functioning
Publisher: Public Library of Science (PLoS)
Date: 21-11-2012
Carbon and nitrogen cycling on intertidal mudflats of a temperate Australian estuary. IV. Inverse model analysis and synthesis
Publisher: Inter-Research Science Center
Date: 18-11-2009
DOI: 10.3354/MEPS08270
Diet shifts and population dynamics of estuarine foraminifera during ecosystem recovery after experimentally induced hypoxia crises
Publisher: Elsevier BV
Date: 03-2016
Coral mucus fuels the sponge loop in warm- and cold-water coral reef ecosystems
Publisher: Springer Science and Business Media LLC
Date: 07-01-2016
DOI: 10.1038/SREP18715
Abstract: Shallow warm-water and deep-sea cold-water corals engineer the coral reef framework and fertilize reef communities by releasing coral mucus, a source of reef dissolved organic matter (DOM). By transforming DOM into particulate detritus, sponges play a key role in transferring the energy and nutrients in DOM to higher trophic levels on Caribbean reefs via the so-called sponge loop. Coral mucus may be a major DOM source for the sponge loop, but mucus uptake by sponges has not been demonstrated. Here we used laboratory stable isotope tracer experiments to show the transfer of coral mucus into the bulk tissue and phospholipid fatty acids of the warm-water sponge Mycale fistulifera and cold-water sponge Hymedesmia coriacea , demonstrating a direct trophic link between corals and reef sponges. Furthermore, 21–40% of the mucus carbon and 32–39% of the nitrogen assimilated by the sponges was subsequently released as detritus, confirming a sponge loop on Red Sea warm-water and north Atlantic cold-water coral reefs. The presence of a sponge loop in two vastly different reef environments suggests it is a ubiquitous feature of reef ecosystems contributing to the high biogeochemical cycling that may enable coral reefs to thrive in nutrient-limited (warm-water) and energy-limited (cold-water) environments.
Reprint of “The effect of biogeochemical processes on pH”
Publisher: Elsevier BV
Date: 07-2007
Reconstructing the diet, trophic level and migration pattern of mysticete whales based on baleen isotopic composition
Publisher: The Royal Society
Date: 12-2021
DOI: 10.1098/RSOS.210949
Abstract: Baleen from mysticete whales is a well-preserved proteinaceous material that can be used to identify migrations and feeding habits for species whose migration pathways are unknown. Analysis of δ 13 C and δ 15 N values from bulk baleen have been used to infer migration patterns for in iduals. However, this approach has fallen short of identifying migrations between regions as it is difficult to determine variations in isotopic shifts without temporal s ling of prey items. Here, we apply analysis of δ 15 N values of amino acids to five baleen plates belonging to three species, revealing novel insights on trophic position, metabolic state and migration between regions. Humpback and minke whales had higher reconstructed trophic levels than fin whales (3.7–3.8 versus 3–3.2, respectively) as expected due to different feeding specialization. Isotopic niche areas between baleen minima and maxima were well separated, indicating regional resource use for in iduals during migration that aligned with isotopic gradients in Atlantic Ocean particulate organic matter. Phenylanine δ 15 N values confirmed regional separation between the niche areas for two fin whales as migrations occurred and elevated glycine and threonine δ 15 N values suggested physiological changes due to fasting. Simultaneous resolution of trophic level and physiological changes allow for identification of regional migrations in mysticetes.
DIFFERENTIAL RESPONSE OF INTERTIDAL FORAMINIFERA TO COMMUNITY RECOVERY FOLLOWING EXPERIMENTALLY INDUCED HYPOXIA
Publisher: Cushman Foundation for Foraminiferal Research
Date: 07-2015
Reconstructing the diet, trophic level, and migration pattern of Mysticete whales based on baleen isotopic composition
Publisher: Cold Spring Harbor Laboratory
Date: 05-10-2020
DOI: 10.1101/2020.10.04.301341
Abstract: Baleen from mysticete whales is a well-preserved proteinaceous material that can be used to identify migrations and feeding habits for species whose migration pathways are unknown. Analysis of δ 13 C and δ 15 N from bulk baleen has been used to infer migration patterns for in iduals. However, this approach has fallen short of identifying migrations between regions as it is difficult to determine variations in isotopic shifts without temporal s ling of prey items. Here we apply analysis of δ 15 N values of amino acids to five baleen plates belonging to three species, revealing novel insights on trophic position, metabolic state, and migration between regions. Humpback and minke whales had higher reconstructed trophic levels than fin whales (3.4-3.5 versus 2.7-2.9, respectively) as expected due to different feeding specialization. Isotopic niche areas between baleen minima and maxima were well separated, indicating regional resource use for in iduals during migration that aligned with isotopic gradients in Atlantic Ocean particulate organic matter. δ 15 N values from phenylalanine confirmed regional separation between the niche areas for two fin whales as migrations occurred and elevated glycine and threonine δ 15 N values revealed physiological changes due to fasting. Simultaneous resolution of trophic level and physiological changes allow for identification of regional migrations in mysticetes.
Human trampling as short-term disturbance on intertidal mudflats: effects on macrofauna biodiversity and population dynamics of bivalves
Publisher: Springer Science and Business Media LLC
Date: 22-02-2007
The effect of biogeochemical processes on pH
Publisher: Elsevier BV
Date: 04-2007
The biology of thalassia: Paradigms and recent advances in research
Publisher: Springer Netherlands
Date: 2006
Role of carbonate burial in Blue Carbon budgets
Publisher: Springer Science and Business Media LLC
Date: 07-03-2019
DOI: 10.1038/S41467-019-08842-6
Abstract: Calcium carbonates (CaCO 3 ) often accumulate in mangrove and seagrass sediments. As CaCO 3 production emits CO 2 , there is concern that this may partially offset the role of Blue Carbon ecosystems as CO 2 sinks through the burial of organic carbon (C org ). A global collection of data on inorganic carbon burial rates (C inorg , 12% of CaCO 3 mass) revealed global rates of 0.8 TgC inorg yr −1 and 15–62 TgC inorg yr −1 in mangrove and seagrass ecosystems, respectively. In seagrass, CaCO 3 burial may correspond to an offset of 30% of the net CO 2 sequestration. However, a mass balance assessment highlights that the C inorg burial is mainly supported by inputs from adjacent ecosystems rather than by local calcification, and that Blue Carbon ecosystems are sites of net CaCO 3 dissolution. Hence, CaCO 3 burial in Blue Carbon ecosystems contribute to seabed elevation and therefore buffers sea-level rise, without undermining their role as CO 2 sinks.
Methane Feedbacks to the Global Climate System in a Warmer World
Publisher: American Geophysical Union (AGU)
Date: 03-2018
DOI: 10.1002/2017RG000559
Warming stimulates sediment denitrification at the expense of anaerobic ammonium oxidation
Publisher: Springer Science and Business Media LLC
Date: 23-03-2020
Working group report Relations between scale, model approach and model parameters
Publisher: Elsevier
Date: 1999
Intraspecific diet shift of Macoma balthica during community reassembly in an estuarine intertidal flat
Publisher: Elsevier BV
Date: 05-2011
Mangrove production and carbon sinks: A revision of global budget estimates
Publisher: American Geophysical Union (AGU)
Date: 09-05-2008
DOI: 10.1029/2007GB003052
Autochthonous and allochthonous contributions of organic carbon to microbial food webs in Svalbard fjords
Publisher: Wiley
Date: 27-03-2017
DOI: 10.1002/LNO.10526
Ocean Solutions to Address Climate Change and Its Effects on Marine Ecosystems
Publisher: Frontiers Media SA
Date: 04-10-2018
Complex Effects of Ecosystem Engineer Loss on Benthic Ecosystem Response to Detrital Macroalgae
Publisher: Public Library of Science (PLoS)
Date: 21-06-2013
The important role of sponges in carbon and nitrogen cycling in a deep‐sea biological hotspot
Publisher: Wiley
Date: 03-07-2022
Abstract: Deep‐sea sponge grounds are hotspots of bio ersity, harbouring thriving ecosystems in the otherwise barren deep sea. It remains unknown how these sponge grounds survive in this food‐limited environment. Here, we unravel how sponges and their associated fauna sustain themselves by identifying their food sources and food‐web interactions using bulk and compound‐specific stable isotope analysis of amino and fatty acids. We found that sponges with a high microbial abundance had an isotopic composition resembling organisms at the base of the food web, suggesting that they are able to use dissolved resources that are generally inaccessible to animals. In contrast, low microbial abundance sponges had a bulk isotopic composition that resembles a predator at the top of a food web, which appears to be the result of very efficient recycling pathways that are so far unknown. The compound‐specific‐isotope analysis, however, positioned low‐microbial abundance sponges with other filter‐feeding fauna. Furthermore, fatty‐acid analysis confirmed transfer of sponge‐derived organic material to the otherwise food‐limited associated fauna. Through this subsidy, sponges are key to the sustenance of thriving deep‐sea ecosystems and might have, due to their ubiquitous abundance, a global impact on biogeochemical cycles. Read the free Plain Language Summary for this article on the Journal blog.
Global abundance and size distribution of streams and rivers
Publisher: Freshwater Biological Association
Date: 10-2012
DOI: 10.5268/IW-2.4.502
Transformation and fate of microphytobenthos carbon in subtropical shallow subtidal sands: A 13 C-labeling study
Publisher: Wiley
Date: 11-2012
Mass balance constraints on nutrient cycling in tropical seagrass beds
Publisher: Elsevier BV
Date: 04-1995
Giant sponge grounds of Central Arctic seamounts are associated with extinct seep life
Publisher: Springer Science and Business Media LLC
Date: 08-02-2022
DOI: 10.1038/S41467-022-28129-7
Abstract: The Central Arctic Ocean is one of the most oligotrophic oceans on Earth because of its sea-ice cover and short productive season. Nonetheless, across the peaks of extinct volcanic seamounts of the Langseth Ridge (87°N, 61°E), we observe a surprisingly dense benthic biomass. Bacteriosponges are the most abundant fauna within this community, with a mass of 460 g C m −2 and an estimated carbon demand of around 110 g C m −2 yr −1 , despite export fluxes from regional primary productivity only sufficient to provide % of this required carbon. Observed sponge distribution, bulk and compound-specific isotope data of fatty acids suggest that the sponge microbiome taps into refractory dissolved and particulate organic matter, including remnants of an extinct seep community. The metabolic profile of bacteriosponge fatty acids and expressed genes indicate that autotrophic symbionts contribute significantly to carbon assimilation. We suggest that this hotspot ecosystem is unique to the Central Arctic and associated with extinct seep biota, once fueled by degassing of the volcanic mounts.
Seagrass sediments as a global carbon sink: Isotopic constraints
Publisher: American Geophysical Union (AGU)
Date: 12-2010
DOI: 10.1029/2010GB003848
Fate of microphytobenthos nitrogen in subtropical subtidal sediments: A 15 N pulse-chase study
Publisher: Wiley
Date: 11-07-2016
DOI: 10.1002/LNO.10356
Influence of deep-water derived isoprenoid tetraether lipids on the
Publisher:
Elsevier BV
Date:
02-2015
Publisher: Elsevier BV
Date: 02-2015
Effect of nutrient availability on carbon and nitrogen incorporation and flows through benthic algae and bacteria in near-shore sandy sediment
Publisher: Inter-Research Science Center
Date: 15-11-2007
DOI: 10.3354/AME01142
Importance of phytodetritus and microphytobenthos for heterotrophs in a shallow subtidal sandy sediment
Publisher: Inter-Research Science Center
Date: 30-05-2012
DOI: 10.3354/MEPS09676
Context-dependent effects of suspension feeding on intertidal ecosystem functioning
Publisher: Inter-Research Science Center
Date: 07-02-2008
DOI: 10.3354/MEPS07213
Sediment organic carbon burial in agriculturally eutrophic impoundments over the last century
Publisher: American Geophysical Union (AGU)
Date: 15-02-2008
DOI: 10.1029/2006GB002854
Respiration in coastal benthic communities
Publisher: Oxford University Press
Date: 06-01-2005
Respiration in the mesopelagic and bathypelagic zones of the oceans
Publisher: Oxford University Press
Date: 06-01-2005
Archaeal nitrification in the ocean
Publisher: Proceedings of the National Academy of Sciences
Date: 15-08-2006
Abstract: Marine Crenarchaeota are the most abundant single group of prokaryotes in the ocean, but their physiology and role in marine biogeochemical cycles are unknown. Recently, a member of this clade was isolated from a sea aquarium and shown to be capable of nitrification, tentatively suggesting that Crenarchaeota may play a role in the oceanic nitrogen cycle. We enriched a crenarchaeote from North Sea water and showed that its abundance, and not that of bacteria, correlates with ammonium oxidation to nitrite. A time series study in the North Sea revealed that the abundance of the gene encoding for the archaeal ammonia monooxygenase alfa subunit ( amoA ) is correlated with a decline in ammonium concentrations and with the abundance of Crenarchaeota. Remarkably, the archaeal amoA abundance was 1–2 orders of magnitude higher than those of bacterial nitrifiers, which are commonly thought to mediate the oxidation of ammonium to nitrite in marine environments. Analysis of Atlantic waters of the upper 1,000 m, where most of the ammonium regeneration and oxidation takes place, showed that crenarchaeotal amoA copy numbers are also 1–3 orders of magnitude higher than those of bacterial amoA . Our data thus suggest a major role for Archaea in oceanic nitrification.
Plumbing the Global Carbon Cycle: Integrating Inland Waters into the Terrestrial Carbon Budget
Publisher: Springer Science and Business Media LLC
Date: 05-2017
Correction for Wuchter et al., Archaeal nitrification in the ocean
Publisher: Proceedings of the National Academy of Sciences
Date: 27-03-2007
Composition, production, and loss of carbohydrates in subtropical shallow subtidal sandy sediments: Rapid processing and long‐term retention revealed by 13C‐labeling
Publisher: Wiley
Date: 09-2010
Transport and degradation of a dinoflagellate bloom in permeable sublittoral sediment
Publisher: Inter-Research Science Center
Date: 2007
DOI: 10.3354/MEPS340139
Tracing carbon and nitrogen incorporation and pathways in the microbial community of a photic subtidal sand
Publisher: Inter-Research Science Center
Date: 26-11-2008
DOI: 10.3354/AME01248
Soothsaying DOM: A Current Perspective on the Future of Oceanic Dissolved Organic Carbon
Publisher: Frontiers Media SA
Date: 25-05-2020
Related Organisations
Koninklijk Nederlands Instituut Voor Onderzoek Der Zee Vestiging Yerseke
Location: Netherlands
Related Funding Activities
Discovery Projects - Grant ID: DP0878568
Start Date: 07-2008
End Date: 12-2011
Amount: $320,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP200100546
Start Date: 12-2020
End Date: 12-2025
Amount: $322,487.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP0663159
Start Date: 08-2006
End Date: 12-2008
Amount: $320,000.00
Funder: Australian Research Council
View Funded Activity