Conserving seagrass ecosystems to meet global biodiversity and climate goals

Published: Feb. 28, 2025

Language: Английский

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A bibliometric analysis of blue carbon (1993–2023): evolution of research hot topics and trends

Frontiers in Marine Science, Journal Year: 2024, Volume and Issue: 11

Published: Aug. 30, 2024

Blue carbon refers to the fixed in marine ecosystems such as mangroves, salt marshes, and seagrass beds. Considered a treasure house for capturing storing dioxide, it can alleviate environmental issues linked climate change positively influence environments where people live. Thus, clarify hotspots development trends of blue research, bibliometric analysis incorporating ScientoPy VOSviewer software were used quantitatively analyze 4,604 publications from Web Science Scopus databases between 1993 2023. The results indicate rapidly growing number published studies on carbon, with research being multifaceted gradually becoming an interdisciplinary international topic. This study which is based keyword clustering analysis, comprises three stages. strength cooperative connections scholars various countries who have work carbon. found that cooperation networks developed are strong those developing relatively weak. Quantitative trend reveals focus restoration conservation ecosystems, remote sensing predominant technology field recent years. In increasing sequestration capacity, mitigation, macroalgae remain potential development.

Language: Английский

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Spatial and temporal distribution patterns and conservation status of seagrasses in the Yellow Sea and Bohai Sea

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 964, P. 178601 - 178601

Published: Jan. 24, 2025

Language: Английский

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Gibberellic acid and light effects on seed germination in the seagrass Zostera marina

Physiologia Plantarum, Journal Year: 2025, Volume and Issue: 177(2)

Published: March 1, 2025

Seagrass meadows have been heavily affected by human activities, with Zostera marina L. (Zosteraceae) being one of the most impacted species. Seed-based methods are currently preferred approach for their restoration, yet low germination rates and poor seedling establishment remain significant challenges. This study explored combined effects light spectra (white, red, darkness), photoperiod, gibberellic acid (GA3-0, 50, 500, 1000 mg L-1) on Z. seed using a fully crossed incubation experiment. Penalised logistic regression Cox proportional hazards analysis were chosen to account events analyse temporal dynamics germination. We found that conditions, particularly red darkness, when GA3, significantly enhanced probability. Furthermore, mid (50 high (500 GA3 concentrations reduced time-to-germination. Morphometric cotyledonary leaf tissue development indicates no adverse treatments development. Our findings suggest effectively improve success reduce dormancy in seeds. Seed can mitigate stress- or manipulation-induced represent viable strategy on-demand germination, such as context seed-based restoration efforts.

Language: Английский

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Hot and fresh: evidence of climate-related suboptimal conditions for seagrass in a large Gulf coast estuary

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Feb. 27, 2024

Seagrasses have long been a focal point for management efforts aimed at restoring ecosystem health in estuaries worldwide. In Tampa Bay, Florida (USA), seagrass coverage has declined since 2016 by nearly third (11,518 acres), despite sustained reductions of nitrogen loads supportive light environments growth. Changing physical water quality conditions related to climate change may be stressing seagrasses beyond their optimal growth ranges, requiring an assessment determine if this decline can linked stress. Three ambient datasets varying sampling design and were evaluated characterize physicochemical Bay the potential relationships with change. become hotter fresher temperature increasing 0.03–0.04 \({}^{\circ }\)C per year salinity decreasing 0.04–0.06 ppt year, translating increase 1.3 1.7 decrease 1.6 2.6 over last fifty years. These changes varied spatially seasonally, most dramatic observed upper bay. Simple linear models provided weight-of-evidence that recent declines are somewhat associated conditions. Trends warming increased precipitation region likely continue, further creating suboptimal Bay. results should compel resource managers consider likelihood reduced resilience estuarine resources due shifting ecological baselines driven additional drivers will complicate long-standing paradigms. While conventional approaches focus on limiting nutrient continued, future effectiveness confounded warrant additional, complementary interventions maintain into future.

Language: Английский

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Recovery of fishery-stressed seagrass meadows is driven by improvements in wastewater management

Marine Pollution Bulletin, Journal Year: 2024, Volume and Issue: 201, P. 116282 - 116282

Published: March 23, 2024

As ecosystem engineers, seagrasses provide major benefits to coastal habitats worldwide. Nonetheless, their dynamics remain poorly understood in local areas. Three seagrass (Zostera noltei) meadows located within shellfish beds Galicia (NW Spain) were selected assess the intra and inter-annual changes by considering effects of harvesting, temperature sewage pollution. Seagrass cover increased between April October, when sediment ranged from 15 20 °C, while terms long-term there was a mean gain 3 % year−1 2004 2023. Shellfishing caused mechanical disturbance meadows, but seasonal depended on temperature. However, we pointed out built new wastewater treatment plants since 1990 that improved water quality as main driver increase cover. Environmental policies enhance seawater limit harvesting pressure are essential maintain this positive trend.

Language: Английский

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Variation in seed traits among different eelgrass populations in China

Global Ecology and Conservation, Journal Year: 2024, Volume and Issue: unknown, P. e03375 - e03375

Published: Dec. 1, 2024

Language: Английский

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Mapping marine habitats in a shallow beach-reef environment combining direct methods and hyperspectral remote sensing

Ocean & Coastal Management, Journal Year: 2024, Volume and Issue: 255, P. 107231 - 107231

Published: June 19, 2024

Language: Английский

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Hot and Fresh: Evidence of Climate-Related Suboptimal Water Conditions for Seagrass in a Large Gulf Coast Estuary

Estuaries and Coasts, Journal Year: 2024, Volume and Issue: 47(6), P. 1475 - 1497

Published: July 6, 2024

Abstract Seagrasses have long been a focal point for management efforts aimed at restoring ecosystem health in estuaries worldwide. In Tampa Bay, Florida (USA), seagrass coverage has declined since 2016 by nearly third (11,518 acres), despite sustained reductions of nitrogen loads supportive light environments growth. Changing physical water quality conditions related to climate change may be stressing seagrasses beyond their optimal growth ranges, requiring an assessment determine if this decline can linked stress. Three ambient datasets varying sampling designs and were evaluated characterize physicochemical Bay the potential relationships with change. become hotter fresher temperature increasing 0.03–0.04 °C per year salinity decreasing 0.04–0.06 ppt year, translating increase 1.3 1.7 decrease 1.6 2.6 over last 50 years. Additionally, number days when was above 30 or below 25 increased on average across all bay segments 48 37 days, respectively, 1975. These changes varied spatially seasonally, most dramatic observed upper bay. Generalized Additive Models provided weight-of-evidence that recent declines are somewhat associated conditions. Trends warming precipitation region likely continue, further creating suboptimal Bay. results should compel resource managers consider likelihood reduced resilience estuarine resources due shifting ecological baselines driven additional drivers will complicate long-standing paradigms. While conventional approaches focus limiting nutrient continued, future effectiveness confounded warrant additional, complementary interventions continuous monitoring data support into future.

Language: Английский

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Recovery of the Seagrass Zostera noltei and Commercial Bivalve Populations After Shellfish Harvesting

Estuaries and Coasts, Journal Year: 2024, Volume and Issue: 47(8), P. 2360 - 2376

Published: July 23, 2024

Abstract Conservation efforts have raised awareness about the impact of small-scale fisheries on distribution seagrass plants. The patterns recovery Zostera noltei and commercial bivalves Cerastoderma edule , Ruditapes decussatus philippinarum after shellfish harvesting were studied in a field experiment bed NW Spain. Sample plots subjected to single disturbance two types treatments three zones characterized by different frequency density. photosynthetic efficiency (F v /F m ), shoot density, leaf length carbohydrate content Z. monitored every months during one year, C N leaves biomass plants measured year disturbance. abundance adults, juveniles recruits condition index adult quantified experimental harvesting. Shoot density remained low ten but recovered control values year. Carbohydrate contents apical rhizomes lower disturbed (treated) plots, whereas no effect was observed F . Denser more complex patches faster. below size while adults size, did not vary, indicating that hampered pressure. findings also suggest meadows can recover within if areas are rotated dense preserved.

Language: Английский

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