Seagrass ecosystem trajectory depends on the relative timescales of resistance, recovery and disturbance

Marine Pollution Bulletin, Journal Year: 2017, Volume and Issue: 134, P. 166 - 176

Published: Sept. 19, 2017

Language: Английский

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Fine sediment and particulate organic matter: A review and case study on ridge-to-reef transport, transformations, fates, and impacts on marine ecosystems

Marine Pollution Bulletin, Journal Year: 2018, Volume and Issue: 135, P. 1205 - 1220

Published: Sept. 6, 2018

Language: Английский

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A system of metrics for the assessment and improvement of aquatic ecosystem models

Environmental Modelling & Software, Journal Year: 2020, Volume and Issue: 128, P. 104697 - 104697

Published: March 13, 2020

In this paper, we introduce the CSPS framework for hierarchical assessment of aquatic ecosystem models built on a range metrics and characteristic signatures relevant to condition. The is comprised four levels: 0) conceptual validation; 1) comparison simulated state variables with observations ('state validation'); 2) fluxes measured process rates ('process 3) system-level emergent properties, patterns relationships ('system validation'). Of these, only levels 0 1 are routinely undertaken at present. To highlight diverse contexts modelling community, present several case studies improved validation approaches using level 0–3 hierarchy. We envision that community–driven adoption these will lead more rigorously assessed models, ultimately accelerating advances in model structure function, confidence predictions.

Language: Английский

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Environmental Flow Requirements of Estuaries: Providing Resilience to Current and Future Climate and Direct Anthropogenic Changes

Frontiers in Environmental Science, Journal Year: 2021, Volume and Issue: 9

Published: Nov. 17, 2021

Estuaries host unique biodiversity and deliver a range of ecosystem services at the interface between catchment ocean. They are also among most degraded ecosystems on Earth. Freshwater flow regimes drive ecological processes contributing to their economic value, but have been modified extensively in many systems by upstream water use. Knowledge freshwater requirements for estuaries (environmental flows or E-flows) lags behind that rivers floodplains. Generalising estuarine E-flows is further complicated responses appear be specific each system. Here we critically review E-flow 1) identify key (hydrodynamics, salinity regulation, sediment dynamics, nutrient cycling trophic transfer, connectivity) modulated regimes, 2) drivers (rainfall, runoff, temperature, sea level rise direct anthropogenic) generate changes magnitude, quality timing flows, 3) propose mitigation strategies (e.g., modification dam operations habitat restoration) buffer against risks altered build resilience indirect anthropogenic disturbances. These support re-establishment natural characteristics which foundational healthy ecosystems.

Language: Английский

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Seagrass as a nature-based solution for coastal protection

Ecological Engineering, Journal Year: 2024, Volume and Issue: 206, P. 107316 - 107316

Published: June 19, 2024

Language: Английский

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Environmental drivers of flowering in the genus Zostera and spatio‐temporal variability of Zostera muelleri flowering in Australasia

Aquatic Conservation Marine and Freshwater Ecosystems, Journal Year: 2024, Volume and Issue: 34(2)

Published: Jan. 21, 2024

Abstract Seed‐based seagrass restoration strategies demand precise understanding of the environmental drivers influencing flowering. Flowering varies across diverse spatial and temporal scales, yet drivers' effects on these dynamics have received less attention. Lack knowledge regarding this life‐history stage limits advancement seed‐based efforts, especially establishment shore‐based nurseries to enhance seed production. A systematic literature review flowering genus Zostera was conducted develop a conceptual model that links influential with Additionally, case study using existing survey data supplemented by additional field surveys designed explore spatio‐temporal variability along latitudinal gradient in Australasia for species muelleri . Predictive models times were developed regional climatic variables, following hypotheses generated from long‐term mesocosm observations. The identified direct and/or indirect temperature, light, tidal variation, nutrients, salinity grazing pressure dynamics. Four categories variables based their implications restoration, namely, timing, abundance, ratio between reproductive vegetative growth morphological characteristics. spathe densities varied significantly among sites gradient. While first ( r 2 = 0.71) peak 0.68) showed significant correlation latitude, equally predicted mean winter air temperature solar radiation 0.73), whereas time best 0.60). Accurate predictions can improve conservation outcomes enabling practitioners forecast subsequent wild harvesting. strong suggests future shifts under climate change are likely, which is crucial maintaining contribution projects conservation.

Language: Английский

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Tampa Bay (Florida, USA): Documenting Seagrass Recovery since the 1980’s and Reviewing the Benefits

Southeastern geographer, Journal Year: 2017, Volume and Issue: 57(3), P. 294 - 319

Published: Jan. 1, 2017

In 1995, the Tampa Bay Estuary Program adopted a goal of restoring seagrass areal coverage to 1950s levels after decades decline. Reaching this required collaboration from public and private sectors, implementation over 450 projects (e.g., wastewater upgrades, stormwater improvements, habitat restoration, education, many others) at an estimated cost $649 M. Nutrient loading has been cut in half, water clarity is now similar levels, 2016, 16,857 ha seagrasses were reported baywide –about 1,480 above original restoration goal. Ongoing monitoring assessments continue describe both total extent composition beds which guide current management efforts. addition, ancillary benefits Bay’s resource recovery have started emerge that will provide additional support guidance for future

Language: Английский

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Lower Vibrio spp. abundances in Zostera marina leaf canopies suggest a novel ecosystem function for temperate seagrass beds

Marine Biology, Journal Year: 2021, Volume and Issue: 168(10)

Published: Sept. 13, 2021

Abstract Seagrasses, a polyphyletic group of about 60 marine angiosperm species, are the foundation diverse and functionally important habitats along sheltered sedimentary coasts. As novel ecological function with high societal relevance, role seagrass leaf canopy for reducing potentially harmful bacteria has recently been hypothesized in tropical regions, but data temperate regions lacking. Here, we tested whether or not abundance general more specifically, those belonging to genus Vibrio were reduced within Zostera marina (eelgrass) meadows compared adjacent sand flats sampled 5 sites south-western Baltic Sea using SCUBA. Compared non-vegetated area, found an average reduction 39% all 63% V. vulnificus/cholerae subtype based on robust plate counting selective agar. The underlying mechanism bacterial load is currently elusive clearly merits further study. Our results underline critical importance seagrasses maintaining shallow water ecosystem functioning including quality provide motivation their protection restoration.

Language: Английский

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A Spatially Integrated Dissolved Inorganic Carbon (SiDIC) Model for Aquatic Ecosystems Considering Submerged Vegetation

Journal of Geophysical Research Biogeosciences, Journal Year: 2023, Volume and Issue: 128(2)

Published: Feb. 1, 2023

Abstract Net ecosystem production (NEP) by submerged aquatic vegetation plays a substantial role in capturing atmospheric carbon dioxide into ecosystems. In lakes and estuaries, the net uptake of is mediated stratification water column which suppresses vertical flux between upper lower layers. The presence can also affect strength such that interactions vegetation, stratification, NEP moderate emissions. Since occur there need for new numerical approach able to consider effect on NEP, dioxide. This study aims develop model investigate how density flexibility, affects partial pressure ( p CO 2 ) dissolved inorganic (DIC). After initial parameterization coefficients based experimental work, horizontal variations DIC were successfully modeled spatially (horizontally) integrated (SiDIC) model, was validated with field observations from an estuarine freshwater lake case study. SiDIC reproduce changes daytime nighttime throughout column. Sensitivity tests showed fluctuation controlled suppression due vegetation. results highlight importance resolving vegetation‐induced when modeling budget within coastal environments.

Language: Английский

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Evaluation of seagrass as a nature-based solution for coastal protection in the German Wadden Sea

Ocean Dynamics, Journal Year: 2023, Volume and Issue: 73(11), P. 699 - 727

Published: Oct. 18, 2023

Abstract Global climate change increases the overall risks for coastal flooding and erosion. Meanwhile, nature-based solutions (NbS) are increasingly becoming a focus of protection measures to improve adaptability. In this study, present potential future role seagrass in risk reduction strategies were explored highly energetic Wadden Sea area German Bight. The methodology study combined coverage data ( Zostera marina noltei ) obtained by field surveys what-if scenario simulations using SCHISM unstructured grid model framework, coupling hydrodynamics, waves, sediments, module. results suggest that introduction meadows locally can reduce both current velocities significant wave heights order up 30 $$\%$$ % deeper areas above 90 shallow areas. Reduction bottom shear stress similar relative magnitude significantly reduced sediment mobilisation on 2 g/L 95th quantile layer concentrations. Effectively altering hydromorphodynamic conditions favouring accumulation, expansion could help tidal flats height growths keep with SLR, thus further maintaining bathymetry-induced dampening lowering erosion as well amount energy at dike infrastructure. accumulated effect under calm weather is considered more important than increased attenuation absolute values it provides during extreme conditions. conclusion be useful addition engineered measures.

Language: Английский

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