Disentangling the Drivers of Benthic Oxygen and Dissolved Carbon Fluxes in the Coastal Zone of the Southern Baltic Sea

Silberberger, Marc J.; Koziorowska-Makuch, Katarzyna; Borawska, Zuzanna; Szczepanek, Marta; Kędra, Monika

doi:10.1007/s12237-022-01074-w

Cited by 9 publications

(9 citation statements)

References 95 publications

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“…The benthic flux of A T in the Gdańsk Deep calculated as the sum of fluxes of particular A T components and assuming complete oxidation of released sulfide, equalled 0.001263 ± 0.000518mol m −2 d −1 (Łukawska-Matuszewska and Graca, 2018). The DIC benthic fluxes characteristic for the coastal zone of the southern Baltic Sea ranged from −0.0021mol m -2 d -1 to 0.1106mol m -2 d -1 (Silberberger et al, 2022). A T and DIC fluxes calculated in this study were significantly higher than the benthic fluxes characteristic of the southern Baltic Sea.…”

Section: A T and Dic Fluxes Via Sgd To The Bay Of Puckcontrasting

confidence: 51%

“…For example, Łukawska-Matuszewska (2016) calculated that the average diffusive flux of A T from the fine-grained sediments in the southern Baltic Sea was 1397 ± 511mmol m −2 d −1 . Silberberger et al (2022) indicated that benthic DIC fluxes in the Bay of Puck (ranged from −2.1 to 110.6mmol C m −2 d −1 ) were partially decoupled from oxygen fluxes and could be a consequence of carbonate dissolution, anaerobic respiration and SGD. The potential influence of SGD on the marine CO 2 system in the Baltic Sea and marine benthic calcifying organisms has not been evaluated to date.…”

Section: Introductionmentioning

confidence: 99%

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The benthic-pelagic coupling affects the surface water carbonate system above groundwater-charged coastal sediments

Szymczycha,

Böttcher,

Diak

et al. 2023

Front. Mar. Sci.

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Submarine groundwater discharge (SGD) can be a significant source of dissolved nutrients, inorganic and organic carbon, and trace metals in the ocean and therefore can be a driver for the benthic-pelagic coupling. However, the influence of hypoxic or anoxic SGD on the carbonate system of coastal seawater is still poorly understood. In the present study, the production of dissolved inorganic carbon (DIC) and alkalinity (AT) in coastal sediments has been investigated under the impact of oxygen-deficient SGD and was estimated based on the offset between the measured data and the conservative mixing of the end members. Production of AT and DIC was primarily caused by denitrification and sulphate reduction. The AT and DIC concentrations in SGD decreased by approximately 32% and 37% mainly due to mixing with seawater counterbalanced by reoxidation and CO2 release into the atmosphere. Total SGD-AT and SGD-DIC fluxes ranged from 0.1 to 0.2mol m-2 d-1 and from 0.2 to 0.3mol m-2 d-1, respectively. These fluxes are probably the reason why the seawater in the Bay of Puck is enriched in AT and DIC compared to the open waters of the Baltic Sea. Additionally, SGD had low pH and was undersaturated with respect to the forms of the aragonite and calcite minerals of CaCO3. The seawater of the Bay of Puck also turned out to be undersaturated in summer (Inner Bay) and fall (Outer Bay). We hypothesize that SGD can potentially contribute to ocean acidification and affect the functioning of the calcifying invertebrates.

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Section: A T and Dic Fluxes Via Sgd To The Bay Of Puckcontrasting

confidence: 51%

Section: Introductionmentioning

confidence: 99%

The benthic-pelagic coupling affects the surface water carbonate system above groundwater-charged coastal sediments

Szymczycha,

Böttcher,

Diak

et al. 2023

Front. Mar. Sci.

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“…Coastal areas, such as estuaries, lagoons and bays, are dynamic environments with gradients of freshwater and seawater flows, representing transition zones between land and sea [3,59,60]. Gradients in physicochemical parameters of bottom water and surface sediments are typical for the Gulf of Gda ńsk [41,42,61] [this research]. As the depth of the basin increases, salinity increases, DO decreases, while the proportion of the finest fraction, organic matter content and hydrogen sulfide concentration increases.…”

Section: Conditions Of Bottom Water and Sediments And Their Impact On...mentioning

confidence: 99%

“…A few studies on the role of macrofauna carried out in the Gulf of Gda ńsk have addressed the bioturbation potential index (BP C ) or nutrient fluxes between water and sediments [39][40][41][42]. Studies on the functioning of marine ecosystems in the Gulf of Gda ńsk in recent years have also considered the influence of organic matter on the structure and functioning of trophic networks [43] and how organic matter is transformed by organisms [44].…”

Section: Introductionmentioning

confidence: 99%

Role of Macrofaunal Communities in the Vistula River Plume, the Baltic Sea—Bioturbation and Bioirrigation Potential

Miernik

Janas

Kendzierska

2023

Biology

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Macrozoobenthos plays a key role in the transformation of inputs from rivers to the sea, such as nutrients, organic matter, or pollutants, and influences biogeochemical processes in the sediments through bioturbation and bioirrigation activity. The purpose of our study was to determine the structure of benthic communities, their bioturbation (BPC) and bioirrigation potential (IPC), and the vertical distribution of macrofauna in the Gulf of Gdańsk. The study revealed changes in the structure of benthic communities and, consequently, in the bioturbation and bioirrigation potential in the study area. Despite the presence of diverse and rich communities in the coastal zone, BPC and IPC values, although high, were formed by a few species. Both indices were formed mainly by the clam Macoma balthica and polychaetes, although the proportion of polychaetes in IPC was higher than in BPC. In the deepest zones, the communities became poorer until they eventually disappeared, along with all macrofaunal functions. Both indices changed similarly with distance from the Vistula River mouth, and there was a very strong correlation between them. We also demonstrated that the highest diversity of the macrofauna was observed in the upper first cm of the sediment, but the highest biomass was observed in deeper layers—at a depth of up to 6 cm, and single individuals occurred even below 10 cm.

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“…Benthic food‐web dynamics and trophic structure are among the marine ecosystem properties projected to change most drastically (Doney et al., 2012; Griffiths et al., 2017). Benthic communities are an important component of marine ecosystems that plays a crucial role in determining the fate of OM, whether it is OM remineralization (Silberberger et al., 2022), its assimilation as biomass available to higher trophic levels (Hobson et al., 2002; Silberberger et al., 2018), or long‐term storage in the sediment (Włodarska‐Kowalczuk, Mazurkiewicz, et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

Trophic niches of macrobenthos: Latitudinal variation indicates climate change impact on ecosystem functioning

Silberberger,

Koziorowska‐Makuch,

Reiss

et al. 2023

Global Change Biology

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Benthic food‐web structure and organic matter (OM) utilization are important for marine ecosystem functioning. In response to environmental changes related to the ongoing climate change, however, many benthic species are shifting their ranges to colder regions, which may lead to altered community composition, but it remains largely unknown how it will affect ecosystem functioning. Here, stable isotope analysis was used to study benthic OM utilization and food‐web structure and to assess whether their spatial patterns reflect today's community differentiation among biogeographic regions and depth zones. Benthic fauna and OM mixtures were collected from two depth zones (100–150 m vs. 200–250 m) within a temperate, two sub‐Arctic, and an Arctic fjord along a latitudinal gradient (59–78° N) that was used as a space‐for‐time substitution to assess the impact of climate change. Our results showed that Arctic and temperate communities are functionally different. Arctic communities were characterized by a strong resource partitioning among different feeding types, irrespective of depth zone. In contrast, all feeding types in temperate communities seemed to rely on sedimentary OM. The sub‐Arctic presented a transition zone. In the sub‐Arctic, shallower communities resembled Arctic communities, suggesting a functional transition between temperate and sub‐Arctic regions. Deeper sub‐Arctic communities resembled temperate communities, suggesting a functional transition between the sub‐Arctic and Arctic regions. This implies that the regions north of the current transitions (deep Arctic and shallow sub‐Arctic) are most likely to experience functional changes related to an altered OM utilization in benthic food webs in response to climate change.

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Disentangling the Drivers of Benthic Oxygen and Dissolved Carbon Fluxes in the Coastal Zone of the Southern Baltic Sea

Cited by 9 publications

References 95 publications

The benthic-pelagic coupling affects the surface water carbonate system above groundwater-charged coastal sediments

The benthic-pelagic coupling affects the surface water carbonate system above groundwater-charged coastal sediments

Role of Macrofaunal Communities in the Vistula River Plume, the Baltic Sea—Bioturbation and Bioirrigation Potential

Trophic niches of macrobenthos: Latitudinal variation indicates climate change impact on ecosystem functioning

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