Estuaries and Coasts, Journal Year: 2021, Volume and Issue: 44(2), P. 396 - 411
Published: Jan. 15, 2021
Language: Английский
Limnology and Oceanography, Journal Year: 2019, Volume and Issue: 65(1), P. 1 - 12
Published: July 16, 2019
Abstract Seagrass meadows perform an important ecological function as filters for incoming nutrients from surrounding watersheds, especially nitrogen (N). By enhancing N removal processes, including burial in sediments and denitrification, seagrass improve water quality. With accelerating losses of worldwide, restoration plays a key role reestablishing these coastal ecosystem functions. However, few measurements exist rates temperate none have been published restored meadows. In this study, we measured large (6.9 km 2 ) eelgrass ( Zostera marina meadow compared through to previous via denitrification. We also inputs external loading fixation assimilation biomass. found that, meadow, was the dominant process removal; rate 3.52 g m −2 yr −1 comparable natural within 10 after seeding more than 20× adjacent bare (0.17 ). that high (2.62 created substantial though temporary sink during growing season. Our results highlight how mediate cycling burial, which date has understudied literature. The successful return filter restoration, shown here first time, can motivate continued efforts conservation.
Language: Английский
Citations
52
Frontiers in Marine Science, Journal Year: 2018, Volume and Issue: 5
Published: Dec. 10, 2018
Seagrass ecosystems provide an array of ecosystem services ranging from habitat provision to erosion control. From a climate change and eutrophication mitigation perspective, the include burial storage carbon nutrients in sediments. Eelgrass (Zostera marina) is most abundant seagrass species along Danish coasts, while its function as nutrient sink has been documented some areas, spatial variability these functions, drivers behind them, are not well understood. Here we present first nationwide study on eelgrass sediment stock (Cstock), nitrogen (Nstock), phosphorus (Pstock). Stocks were measured top 10 cm meadows spanning semi-enclosed estuaries (inner outer fjords) open coasts. Further, assessed environmental factors (level exposure, properties, level eutrophication) each area evaluate their relative importance pattern respective stocks. We found large stocks, representing 155-4413 g C m-2, 24-448 TN 7-34 TP m-2. Cstock Nstock significantly higher inner fjords compared Cstock, Nstock, Pstock showed positive relationship with silt-clay content Moreover, was also more eutrophied areas high concentrations chlorophyll (chl a) water column. Conversely, related or chl a, suggesting dependence driving sizes implying that local differences properties should be included when evaluating capacity carbon, nitrogen, meadows. These insights guidance managers selecting priority for climate- initiatives.
Language: Английский
Citations
47
Frontiers in Marine Science, Journal Year: 2019, Volume and Issue: 6
Published: March 14, 2019
While the value of giant kelp (Macrocystis pyrifera) as a habitat-forming foundation species is well-understood, it unclear how they impact oxygen concentration and pH surrounding seawater, further, such dynamic abiotic environment will affect eco-evolutionary dynamics in context global change. Here, we profiled nearshore forest Southern California to understand changes dissolved (DO) with high spatiotemporal resolution. We then examined transgenerational effects using sea urchins (Strongylocentrotus purpuratus) our study organism. Using enclosures on benthos, conditioned adult situ at two locations - one inside outside forest. After 11 week conditioning period timed coincide gametogenesis adults, were collected, spawned, cultures their progeny raised laboratory order assess performance simulated ocean acidification. In terms physical observations, observed significant DO not only when comparing sites forest, but also between surface benthic sensors same site. benthos differed mean, amplitude diel signal, profile background noise signal. Ultimately, these results indicated that both more predictably variable environment. On biological side, found produced protein-rich eggs developed into pH-resilient embryos. Overall, this temperate ecosystem first studies observe response highly characterized environmental variability situ, context.
Language: Английский
Citations
43
Landscape Ecology, Journal Year: 2021, Volume and Issue: 36(5), P. 1489 - 1509
Published: March 1, 2021
Abstract Context Seagrass meadows act as efficient natural carbon sinks by sequestering atmospheric CO 2 and through trapping of allochthonous organic material, thereby preserving (C org ) in their sediments. Less understood is the influence landscape configuration transformation (land-use change) on sequestration dynamics coastal seascapes across land–sea interface. Objectives We explored degradation adjacent mangroves fate C seagrass habitats. Methods Through predictive modelling, we assessed sedimentary content, stocks source composition multiple (km-wide buffer zones) dominated different communities northwest Madagascar. The study area encompassed to intact deforested mangroves. Results content was influenced a combination metrics inherent habitat plant- sediment-properties. found strong land-to-sea gradient, likely driven hydrodynamic forces, generating distinct patterns levels seascapes. There higher mangrove signal surface sediments closer area, possibly due an escalated export from soils. Seascapes comprising large continuous had comparison more diverse patchy Conclusion Our results emphasize benefit consider seascape connectivity accurately assess Understanding spatial variability what driving observed useful for identifying sink hotspots develop management prioritizations.
Language: Английский
Citations
40
Estuaries and Coasts, Journal Year: 2021, Volume and Issue: 44(2), P. 396 - 411
Published: Jan. 15, 2021
Language: Английский
Citations
35