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James K, Macreadie PI, Burdett HL, Davies I, Kamenos NA. It's time to broaden what we consider a 'blue carbon ecosystem'. GLOBAL CHANGE BIOLOGY 2024; 30:e17261. [PMID: 38712641 DOI: 10.1111/gcb.17261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 01/10/2024] [Accepted: 02/18/2024] [Indexed: 05/08/2024]
Abstract
Photoautotrophic marine ecosystems can lock up organic carbon in their biomass and the associated organic sediments they trap over millennia and are thus regarded as blue carbon ecosystems. Because of the ability of marine ecosystems to lock up organic carbon for millennia, blue carbon is receiving much attention within the United Nations' 2030 Agenda for Sustainable Development as a nature-based solution (NBS) to climate change, but classically still focuses on seagrass meadows, mangrove forests, and tidal marshes. However, other coastal ecosystems could also be important for blue carbon storage, but remain largely neglected in both carbon cycling budgets and NBS strategic planning. Using a meta-analysis of 253 research publications, we identify other coastal ecosystems-including mud flats, fjords, coralline algal (rhodolith) beds, and some components or coral reef systems-with a strong capacity to act as blue carbon sinks in certain situations. Features that promote blue carbon burial within these 'non-classical' blue carbon ecosystems included: (1) balancing of carbon release by calcification via carbon uptake at the individual and ecosystem levels; (2) high rates of allochthonous organic carbon supply because of high particle trapping capacity; (3) high rates of carbon preservation and low remineralization rates; and (4) location in depositional environments. Some of these features are context-dependent, meaning that these ecosystems were blue carbon sinks in some locations, but not others. Therefore, we provide a universal framework that can evaluate the likelihood of a given ecosystem to behave as a blue carbon sink for a given context. Overall, this paper seeks to encourage consideration of non-classical blue carbon ecosystems within NBS strategies, allowing more complete blue carbon accounting.
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Affiliation(s)
| | - Peter I Macreadie
- Marine Research and Innovation Centre, School of Life and Environmental Sciences, Deakin University, Burwood, Victoria, Australia
| | - Heidi L Burdett
- Umeå Marine Sciences Centre, Umeå University, Norrbyn, Sweden
- Department of Ecology and Environmental Sciences, Umeå University, Umeå, Sweden
| | | | - Nicholas A Kamenos
- Umeå Marine Sciences Centre, Umeå University, Norrbyn, Sweden
- Department of Ecology and Environmental Sciences, Umeå University, Umeå, Sweden
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Marzocchi U, Bonaglia S, Zaiko A, Quero GM, Vybernaite-Lubiene I, Politi T, Samuiloviene A, Zilius M, Bartoli M, Cardini U. Zebra Mussel Holobionts Fix and Recycle Nitrogen in Lagoon Sediments. Front Microbiol 2021; 11:610269. [PMID: 33542710 PMCID: PMC7851879 DOI: 10.3389/fmicb.2020.610269] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 12/29/2020] [Indexed: 01/04/2023] Open
Abstract
Bivalves are ubiquitous filter-feeders able to alter ecosystems functions. Their impact on nitrogen (N) cycling is commonly related to their filter-feeding activity, biodeposition, and excretion. A so far understudied impact is linked to the metabolism of the associated microbiome that together with the host constitute the mussel's holobiont. Here we investigated how colonies of the invasive zebra mussel (Dreissena polymorpha) alter benthic N cycling in the shallow water sediment of the largest European lagoon (the Curonian Lagoon). A set of incubations was conducted to quantify the holobiont's impact and to quantitatively compare it with the indirect influence of the mussel on sedimentary N transformations. Zebra mussels primarily enhanced the recycling of N to the water column by releasing mineralized algal biomass in the form of ammonium and by stimulating dissimilatory nitrate reduction to ammonium (DNRA). Notably, however, not only denitrification and DNRA, but also dinitrogen (N2) fixation was measured in association with the holobiont. The diazotrophic community of the holobiont diverged substantially from that of the water column, suggesting a unique niche for N2 fixation associated with the mussels. At the densities reported in the lagoon, mussel-associated N2 fixation may account for a substantial (and so far, overlooked) source of bioavailable N. Our findings contribute to improve our understanding on the ecosystem-level impact of zebra mussel, and potentially, of its ability to adapt to and colonize oligotrophic environments.
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Affiliation(s)
- Ugo Marzocchi
- Integrative Marine Ecology Department, Stazione Zoologica Anton Dohrn, National Institute of Marine Biology, Ecology and Biotechnology, Naples, Italy
- Marine Research Institute, Klaipėda University, Klaipėda, Lithuania
- Center for Water Technology (WATEC), Department of Biology, Aarhus University, Aarhus, Denmark
| | - Stefano Bonaglia
- Marine Research Institute, Klaipėda University, Klaipėda, Lithuania
- Department of Ecology, Environment and Plant Sciences, Stockholm University, Stockholm, Sweden
- Nordcee, Department of Biology, University of Southern Denmark, Odense, Denmark
- Department of Marine Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Anastasija Zaiko
- Marine Research Institute, Klaipėda University, Klaipėda, Lithuania
- Coastal and Freshwater Group, Cawthron Institute, Nelson, New Zealand
- Institute of Marine Science, University of Auckland, Auckland, New Zealand
| | - Grazia M. Quero
- Integrative Marine Ecology Department, Stazione Zoologica Anton Dohrn, National Institute of Marine Biology, Ecology and Biotechnology, Naples, Italy
- Institute for Biological Resources and Marine Biotechnologies, National Research Council of Italy, Ancona, Italy
| | | | - Tobia Politi
- Marine Research Institute, Klaipėda University, Klaipėda, Lithuania
| | | | - Mindaugas Zilius
- Marine Research Institute, Klaipėda University, Klaipėda, Lithuania
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Marco Bartoli
- Marine Research Institute, Klaipėda University, Klaipėda, Lithuania
- Department of Chemistry, Life science and Environmental Sustainability, Parma University, Parma, Italy
| | - Ulisse Cardini
- Integrative Marine Ecology Department, Stazione Zoologica Anton Dohrn, National Institute of Marine Biology, Ecology and Biotechnology, Naples, Italy
- Marine Research Institute, Klaipėda University, Klaipėda, Lithuania
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Francescangeli F, Quijada M, Armynot du Châtelet E, Frontalini F, Trentesaux A, Billon G, Bouchet VMP. Multidisciplinary study to monitor consequences of pollution on intertidal benthic ecosystems (Hauts de France, English Channel, France): Comparison with natural areas. MARINE ENVIRONMENTAL RESEARCH 2020; 160:105034. [PMID: 32907737 DOI: 10.1016/j.marenvres.2020.105034] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 05/25/2020] [Accepted: 05/26/2020] [Indexed: 06/11/2023]
Abstract
The intertidal areas of the Hauts-de-France (English Channel - France) stand out for the occurrence of fragile ecosystems that are exposed to natural and human-induced stress. Over the last two centuries, the northern part of this region has experienced a strong human pressure, with the settlement of numerous activities (i.e., metallurgic factories, harbors, embankments). On the contrary, the southern part includes mostly natural areas. The whole region is influenced by a macrotidal regime. A multidisciplinary approach based on sedimentological (grain-size), geochemical (trace metals, biomarkers) and biological (foraminifera) proxies was used to unravel the contrasting environmental conditions in the Hauts-de-France. Three foraminiferal-types communities, which reflect different ecological characteristics at regional scale, were identified: 1) estuarine macrotidal assemblages (Haynesina germanica associated to Elphidiidae) in low impacted estuaries; 2) industrial-perturbed assemblages (H. germanica and Cribroelphidium excavatum) in harbor areas; and 3) infaunal-dominant assemblages (Bolivina variabilis and B. pseudoplicata) in embankment areas. The outcomes of this study show that a multiproxy procedure needs to be adopted for properly characterizing intertidal ecosystems, where human impacts and natural stresses overlap and are hard to disentangle.
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Affiliation(s)
- F Francescangeli
- University of Lille, CNRS, Univ. Littoral Côte D'Opale, UMR 8187, LOG, Laboratoire D'Océanologie et de Géosciences, F 59 000, Lille, France; University of Hamburg, Institute for Geology, Centre for Earth System Research and Sustainability, Germany.
| | - M Quijada
- University of Lille, CNRS, Univ. Littoral Côte D'Opale, UMR 8187, LOG, Laboratoire D'Océanologie et de Géosciences, F 59 000, Lille, France
| | - E Armynot du Châtelet
- University of Lille, CNRS, Univ. Littoral Côte D'Opale, UMR 8187, LOG, Laboratoire D'Océanologie et de Géosciences, F 59 000, Lille, France
| | - F Frontalini
- University of Urbino, Dipartimento di Scienze Pure e Applicate (DiSPeA), 61029, Urbino, Italy
| | - A Trentesaux
- University of Lille, CNRS, Univ. Littoral Côte D'Opale, UMR 8187, LOG, Laboratoire D'Océanologie et de Géosciences, F 59 000, Lille, France
| | - G Billon
- University of Lille, CNRS, UMR 8516 - LASIRE - Laboratoire de Spectroscopie pour Les Interactions, La Réactivité et L'Environnement, F-59000, Lille, France
| | - V M P Bouchet
- University of Lille, CNRS, Univ. Littoral Côte D'Opale, UMR 8187, LOG, Laboratoire D'Océanologie et de Géosciences, F 62 930, Wimereux, France
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Zhang S, Pei H, Wei J, Zhu Y, Wang Y, Yang Z. The seasonal and spatial variations in diatom communities and the influence of environmental factors on three temperate reservoirs in Shandong province, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:24503-24515. [PMID: 31230246 DOI: 10.1007/s11356-019-05480-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 05/14/2019] [Indexed: 06/09/2023]
Abstract
Diatoms play an important role as ecological indicators, and some species of diatoms can easily cause water blooms, thereby decreasing the production capacity of water treatment plants and endangering drinking water safety. Mastering the diatom community dynamics is crucial for water supply. In this study, diatom composition, spatial distribution and succession were investigated in Datun Reservoir, Donghu Reservoir and Shuangwangcheng Reservoir, which are important drinking water sources in Shandong province, China. Results showed that the three reservoirs could be classified as being between mesotrophic and moderately eutrophic. The diatom community in each of the three reservoirs exhibited no obvious seasonal succession. The diatom communities in the three reservoirs were relatively simple in composition, with Synedra and Cyclotella being the most dominant groups all year round. Synedra had a negative relationship with NO2-N. Cyclotella had a positive association with NO3-N, but was negatively associated with NH4-N and CODMn in the three reservoirs. Through the analysis of diatom and environmental factors, the three reservoirs have the potential of hosting diatom blooms in summer, when the higher temperature combines with reduced water flow.
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Affiliation(s)
- Shasha Zhang
- School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China
| | - Haiyan Pei
- School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China.
- Shandong Provincial Engineering Center on Environmental Science and Technology, Jinan, 250061, China.
| | - Jielin Wei
- School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China
| | - Yaowen Zhu
- School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China
| | - Yuting Wang
- School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China
| | - Zhigang Yang
- School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China
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Zhang N, Thompson CEL, Townend IH, Rankin KE, Paterson DM, Manning AJ. Nondestructive 3D Imaging and Quantification of Hydrated Biofilm-Sediment Aggregates Using X-ray Microcomputed Tomography. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:13306-13313. [PMID: 30354082 DOI: 10.1021/acs.est.8b03997] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Biofilm-sediment aggregate (BSA) contains a high water content, either within internal pores and channels or bound by extracellular polymeric substances (EPS) forming a highly hydrated biofilm matrix. Desiccation of BSAs alters the biofilm morphology and thus the physical characteristics of porous media, such as the binding matrix within BSA and internal pore geometry. Observing BSAs in their naturally hydrated form is essential but hampered due to the lack of techniques for imaging and discerning hydrated materials. Generally, imagery techniques (scanning electron microscopy (SEM), transmission electron microscopy (TEM), and focused ion beam nanotomography (FIB-nt)) involve the desiccation of BSAs (freeze-drying or acetone dehydration) or prevent differentiation between BSA components such as inorganic particles and pore water (confocal laser scanning microscopic (CLSM)). Here, we propose a novel methodology that simultaneously achieves the 3D visualization and quantification of BSAs and their components in their hydrated form at a submicron resolution using X-ray microcomputed tomography (μ-CT). It enables the high-resolution detection of comparable morphology of multiphase components within a hydrated aggregate: each single inorganic particle and the hydrated biofilm matrix. This allows the estimation of aggregate density and the illustration of biofilm-sediment binding matrix. This information provides valuable insights into investigations of the transport of BSAs and aggregate-associated sediment particles, contaminants (such as microplastics), organic carbon, and their impacts on aquatic biogeochemical cycling.
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Affiliation(s)
- Naiyu Zhang
- School of Ocean and Earth Science , National Oceanography Centre, University of Southampton , Southampton SO14 3ZH , U.K
| | - Charlotte E L Thompson
- School of Ocean and Earth Science , National Oceanography Centre, University of Southampton , Southampton SO14 3ZH , U.K
| | - Ian H Townend
- School of Ocean and Earth Science , National Oceanography Centre, University of Southampton , Southampton SO14 3ZH , U.K
| | - Kathryn E Rankin
- μ-VIS X-ray Imaging Centre, Faculty of Engineering and the Environment, Highfield Campus , University of Southampton , Southampton SO17 1BJ , U.K
| | - David M Paterson
- Sediment Ecology Research Group, Scottish Oceans Institute, School of Biology , University of St. Andrews , St. Andrews KY16 8LB , U.K
| | - Andrew J Manning
- HR Wallingford Ltd., Coasts & Oceans Group, Wallingford OX10 8BA , United Kingdom
- School of Environmental Sciences , University of Hull , Hull HU6 7RX , United Kingdom
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Kamp A, Petro C, Røy H, Nielsen S, Carvalho P, Stief P, Schramm A. Intracellular nitrate in sediments of an oxygen-deficient marine basin is linked to pelagic diatoms. FEMS Microbiol Ecol 2018; 94:5040219. [PMID: 29931199 DOI: 10.1093/femsec/fiy122] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 06/15/2018] [Indexed: 11/13/2022] Open
Abstract
Intracellular nitrate is an important electron acceptor in oxygen-deficient aquatic environments, either for the nitrate-storing microbes themselves, or for ambient microbial communities through nitrate leakage. This study links the spatial distribution of intracellular nitrate with the abundance and identity of nitrate-storing microbes in sediments of the Bornholm Basin, an environmental showcase for severe hypoxia. Intracellular nitrate (up to 270 nmol cm-3 sediment) was detected at all 18 stations along a 35-km transect through the basin and typically extended as deep as 1.6 cm into the sediment. Intracellular nitrate contents were particularly high at stations where chlorophyll contents suggested high settling rates of pelagic primary production. The depth distribution of intracellular nitrate matched that of the diatom-specific photopigment fucoxanthin in the upper 1.6 cm and calculations support that diatoms are the major nitrate-storing microbes in these sediments. In contrast, other known nitrate-storing microbes, such as sulfide-oxidizing bacteria and foraminifers, played only a minor role, if any. Strikingly, 18S rRNA gene sequencing revealed that the majority of the diatoms in the sediment were pelagic species. We conclude that intracellular nitrate stored by pelagic diatoms is transported to the seafloor by settling phytoplankton blooms, implying a so far overlooked 'biological nitrate pump'.
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Affiliation(s)
- Anja Kamp
- AIAS, Aarhus Institute of Advanced Studies, Aarhus University, Aarhus, Denmark.,Center for Geomicrobiology and Section for Microbiology, Department of Bioscience, Aarhus University, Aarhus, Denmark
| | - Caitlin Petro
- Center for Geomicrobiology and Section for Microbiology, Department of Bioscience, Aarhus University, Aarhus, Denmark
| | - Hans Røy
- Center for Geomicrobiology and Section for Microbiology, Department of Bioscience, Aarhus University, Aarhus, Denmark
| | - Susanne Nielsen
- Center for Geomicrobiology and Section for Microbiology, Department of Bioscience, Aarhus University, Aarhus, Denmark
| | - Pedro Carvalho
- Department of Environmental Science, Aarhus University, Roskilde, Denmark
| | - Peter Stief
- Nordcee, Department of Biology, University of Southern Denmark, Odense, Denmark
| | - Andreas Schramm
- Center for Geomicrobiology and Section for Microbiology, Department of Bioscience, Aarhus University, Aarhus, Denmark
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Kamp A, Stief P. Editorial: Eukaryotic Microbes Store Nitrate for "Breathing" in Anoxia. Front Microbiol 2017; 8:2439. [PMID: 29375489 PMCID: PMC5770622 DOI: 10.3389/fmicb.2017.02439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 11/24/2017] [Indexed: 11/30/2022] Open
Affiliation(s)
- Anja Kamp
- AIAS, Aarhus Institute of Advanced Studies, Aarhus University, Aarhus, Denmark
| | - Peter Stief
- Nordcee, Department of Biology, University of Southern Denmark, Odense, Denmark
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Lehto NJ, Larsen M, Zhang H, Glud RN, Davison W. A mesocosm study of oxygen and trace metal dynamics in sediment microniches of reactive organic material. Sci Rep 2017; 7:11369. [PMID: 28900222 PMCID: PMC5595988 DOI: 10.1038/s41598-017-10179-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 08/07/2017] [Indexed: 11/13/2022] Open
Abstract
Deposition of particulate organic matter (POM) induces diagenetic hot spots at the sediment-water interface (SWI). Here we explore the effects of intensive POM degradation for metal mobilization at the SWI. By using a combined planar optode-DGT (diffusive gradient in thin-films) sensor we obtained simultaneous measurements of dissolved O2 and trace metal dynamics around an aggregate of reactive organic matter placed on the SWI of a sediment mesocosm. The aggregate induced a rapid, highly localized, decrease in O2 concentration, resulting in an anoxic feature at the SWI. Co-located with this feature, we observed intense Fe and Mn mobilization, removal of Co, Ni and Zn and found evidence for the concurrent release and precipitation of Pb within a small confined volume. We also identified two small microniches in the anoxic sediment below the SWI, defined by elevated trace metal mobilization. Differences between the metal release rates in these two microniches indicate that they were formed by the mineralisation of different types of organic matter buried in the sediment. Our results provide direct empirical evidence for the potential importance of POM-induced reactive microniches when considering the fluxes of metals from and within aquatic sediments, and suggest that other elements' cycles may also be affected.
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Affiliation(s)
- Niklas J Lehto
- Department of Soil and Physical Sciences, Lincoln University, Lincoln, 7647, Christchurch, New Zealand.
| | - Morten Larsen
- Department of Biology, Nordic Centre for Earth Evolution (NordCEE), University of Southern Denmark, Odense M, Denmark
- Scottish Marine Institute, Scottish Association for Marine Science, Oban, Scotland
| | - Hao Zhang
- Lancaster Environment Centre, Lancaster University, Lancaster, United Kingdom
| | - Ronnie N Glud
- Department of Biology, Nordic Centre for Earth Evolution (NordCEE), University of Southern Denmark, Odense M, Denmark
- Scottish Marine Institute, Scottish Association for Marine Science, Oban, Scotland
- Department of Ocean and Environmental Sciences, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-ku, Tokyo, 108-8477, Japan
| | - William Davison
- Lancaster Environment Centre, Lancaster University, Lancaster, United Kingdom
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