Shifts in biodiversity and physical structure of seagrass beds across 5 decades at Carriacou, Grenadines DOI Creative Commons

David G. Patriquin,

Robert E. Scheibling,

Karen Filbee‐Dexter

et al.

PLoS ONE, Journal Year: 2024, Volume and Issue: 19(8), P. e0306897 - e0306897

Published: Aug. 1, 2024

Caribbean seagrass beds are facing increasing anthropogenic stress, yet comprehensive ground-level monitoring programs that capture the structure of communities before 1980s rare. We measured distribution and species composition abundance associated macroalgae macroinvertebrates in 3 years over a 47-year period (1969, 1994, 2016) at Carriacou, Granada, an area not heavily impacted by local human activity. Seagrass cover physical parameters fringing were transects high (HWE) low wave energy (LWE) sites; frequency occurrence all species, biomass morphology seagrasses, 100 m 2 stations around island. Losses nearshore occurred HWE but LWE sites between 1969 2016 with increases seagrass-free inshore zone (SFI) erosional scarps within beds. Total did vary across although there progressive changes composition: decline dominant Thalassia testudinum concomitant increase Syringodium filiforme , establishment invasive Halophila stipulacea sites. Species richness diversity community highest when 94% (excluding Caulerpa ) most abundant, sea urchins least compared to 2016. Multivariate statistical analyses showed differences consistent trends urchin abundance. Increases SFI scarp number mainly after 1994 likely related increased forcing following degradation offshore coral reefs Our observations suggest landward migration rapidly rising level future will be realized reef-protected Carriacou barring reversal processes have caused reef flattening.

Language: Английский

Wearable sensors for monitoring marine environments and their inhabitants DOI
Altynay Kaidarova, Nathan R. Geraldi, Rory P. Wilson

et al.

Nature Biotechnology, Journal Year: 2023, Volume and Issue: 41(9), P. 1208 - 1220

Published: June 26, 2023

Language: Английский

Citations

47
New global area estimates for coral reefs from high-resolution mapping DOI Creative Commons
Mitchell Lyons, Nicholas Murray, Emma Kennedy

et al.

Cell Reports Sustainability, Journal Year: 2024, Volume and Issue: 1(2), P. 100015 - 100015

Published: Feb. 1, 2024

Coral reefs underpin the environmental, social, and economic fabrics of much world's tropical coast. Yet, fine-scale distribution composition coral have never been reported consistently across planet. Here, we present new area estimates enabled by global geomorphic zone benthic substrate maps at 5 m pixel resolution. We revise reef to 348,361 km2 shallow 80,213 (46,237–106,319 km2, 95% confidence interval) habitat. The mapping used more than 1.5 million training samples supported 480+ data contributions deploy a classification over 100 trillion pixels from Sentinel-2 satellites Planet Dove CubeSat constellation. publicly available are accessible via Allen Atlas Google Earth Engine already being thousands people improve conservation, management, research ecosystems.

Language: Английский

Citations

22
Seagrass genomes reveal ancient polyploidy and adaptations to the marine environment DOI

Xiao Ma,

Steffen Vanneste, Jiyang Chang

et al.

Nature Plants, Journal Year: 2024, Volume and Issue: 10(2), P. 240 - 255

Published: Jan. 26, 2024

Language: Английский

Citations

21
Soil Carbon, Nitrogen, and Phosphorus Stoichiometry and Fractions in Blue Carbon Ecosystems: Implications for Carbon Accumulation in Allochthonous-Dominated Habitats DOI
Yuan Li, Chuancheng Fu, Jian Hu

et al.

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(14), P. 5913 - 5923

Published: March 30, 2023

Blue carbon ecosystems (BCEs) including mangroves, saltmarshes, and seagrasses are highly efficient for organic (OC) accumulation due to their unique ability trap high rates of allochthonous substrates. It has been suggested that the magnitude OC preservation is constrained by nitrogen (N) phosphorus (P) limitation in response climate anthropogenic changes. However, little known about connection soil with N-P forms inputs BCEs. By analyzing OC, N, P densities BCEs from 797 sites globally, we find that, China, where provides 50-75% total C/P N/P ratios 4- 8-fold lower than global means, 23%, 29%, 20% buried oxidation-resistant fractions linked minerals. We estimate stocks China should double over next 40 years under elevated ratio scenarios during BCE restoration. Allochthonous-dominated thus have capacity enhance refractory mineral bound matter accumulation. Protection restoration such will provide long-term mitigating benefits against sea level rise greenhouse gas emissions.

Language: Английский

Citations

28
Energetic connectivity of diverse elasmobranch populations – implications for ecological resilience DOI Creative Commons
Oliver N. Shipley, Philip Matich, Nigel E. Hussey

et al.

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2023, Volume and Issue: 290(1996)

Published: April 11, 2023

Understanding the factors shaping patterns of ecological resilience is critical for mitigating loss global biodiversity. Throughout aquatic environments, highly mobile predators are thought to serve as important vectors energy between ecosystems thereby promoting stability and resilience. However, role these play in connecting food webs flow remains poorly understood most contexts. Using carbon nitrogen isotopes, we quantified use several prey resource pools (small oceanic forage, large oceanics, coral reef, seagrass) by 17 species elasmobranch fishes (

Language: Английский

Citations

27
Research trends of nature-based solutions: from urban to climate change DOI Creative Commons
Hyunyoung Yang, Jeongyeon Chae, Cholho Song

et al.

Frontiers in Forests and Global Change, Journal Year: 2024, Volume and Issue: 7

Published: June 14, 2024

As one of the efforts to combat climate change and biodiversity crisis, an interest in nature-based solutions (NbS) has been growing. Although there have diverse discussions on NbS, it is still insufficient find a quantitative evaluation global research trends which field what extent NbS studied. In this regard, study employed latent Dirichlet allocation (LDA) topic modeling keyword analysis quantitatively evaluate NbS. Among papers searched SCOPUS, 2,625 studies (2009–2022) were analyzed by LDA. result, NbS-related articles classified into seven topics (i.e., Urban governance, green infrastructure, Wastewater treatment, Coastal protection, Flood mitigation, Carbon sequestration, Sustainable agriculture). Of these, urban water-related accounted for largest proportion. contrast, carbon sequestration sustainable agriculture smaller proportion, but proportion significantly increased over time. result analysis, frequency water keywords remained high. was low recently increased. network, co-occurrence connection initially Still, time, related similarly those water. The findings imply that mainly focused researches. carbon-related researches may also be actively handled relation near future.

Language: Английский

Citations

7
Recent Advances in Wearable Flexible Sensors and Implantable Biotags for Aquatic Animals DOI
Lu Wang, Yansong Gai, Qipei He

et al.

Advanced Materials Technologies, Journal Year: 2024, Volume and Issue: 9(12)

Published: March 18, 2024

Abstract The impact of human activities and social industrialization on the marine environment aquatic life cannot be underestimated. By utilizing information transmission intermediates such as underwater wearable sensors, it is possible to promptly precisely assess state environment, well behavior biological populations, thereby ensuring accurate protection ecology. Flexible electronic tags maintain monitoring performance while addressing biocompatibility sensors. When tag attached an organism's surface or implanted in body, can perform real‐time monitoring, providing valuable insights into their biology behavior. At same time, allow them attach animal without causing injury disruption inherent In this paper, implantable flexible sensing systems are examined exploring potential applications field. review discusses four aspects these systems: physical environments, chemical physiological animals, biochemical animals. Finally, article explores upcoming challenges trends development wearable, sensors for

Language: Английский

Citations

6
Linking vertical movements of large pelagic predators with distribution patterns of biomass in the open ocean DOI Creative Commons
Camrin D. Braun, Alice Della Penna, Martin C. Arostegui

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2023, Volume and Issue: 120(47)

Published: Nov. 6, 2023

Many predator species make regular excursions from near-surface waters to the twilight (200 1,000 m) and midnight (1,000 3,000 zones of deep pelagic ocean. While occurrence significant vertical movements into ocean has evolved independently across taxonomic groups, functional role(s) ecological significance these remain poorly understood. Here, we integrate results satellite tagging efforts with model predictions prey layers in North Atlantic Ocean determine whether distributions are correlated habitat use 12 predators. Using 3D movement data for 344 individuals who traversed nearly 1.5 million km > 42,000 d, found that every tagged frequented zone many made trips zone. a predictive model, clear alignment depth expected location at least half species. We compared high-resolution shipboard acoustics selected representative matches highlight opportunities challenges analysis synthesis data. not all observed behavior was consistent estimated availability depth, our suggest biomass likely high value suite commercially important predators open Careful consideration disruption ecosystem services provided by food webs is needed before potential costs benefits proceeding extractive activities can be evaluated.

Language: Английский

Citations

14
Substantial blue carbon sequestration in the world’s largest seagrass meadow DOI Creative Commons
Chuancheng Fu, Sofia Frappi, Michelle-Nicole Havlik

et al.

Communications Earth & Environment, Journal Year: 2023, Volume and Issue: 4(1)

Published: Dec. 13, 2023

Abstract Seagrass meadows are important sinks for organic carbon and provide co-benefits. However, data on the stock in seagrass sediments scarce many regions, particularly The Bahamas, which accounts up to 40.7% of documented global area, limiting formulation blue strategies. Here, we sampled 10 across an extensive island chain Bahamas. We estimate that Bahamas store 0.42–0.59 Pg top-meter with accumulation rate 2.1–2.9 Tg annually, representing a substantial hotspot. Autochthonous decreased from ~1980 onwards, concomitant increases cyanobacterial mangrove contributions, suggesting disturbance ecosystems, likely caused by tourism maritime traffic activities. This study provides vast, understudied region contributes improving climate action Greater Caribbean region.

Language: Английский

Citations

13
Mapping seagrasses on the basis of Sentinel-2 images under tidal change DOI Creative Commons

Yiqiong Li,

Junwu Bai,

Shiquan Chen

et al.

Marine Environmental Research, Journal Year: 2023, Volume and Issue: 185, P. 105880 - 105880

Published: Jan. 12, 2023

Tidal variations make the water bodies in satellite remote sensing images on different shooting dates have inundation ranges and depths. Although underwater substrates do not change, spectral properties differ due to attenuation effects. These differences an impact results when multi-temporal are used analyze seagrasses. This paper proposes a mapping method for seagrasses taking tidal influence, using growth area Xincun Bay, Hainan Province, China as case study. a) The was determined from images. were divided into two types: exposed surface or flats (non-submerged seagrasses) submerged (submerged seagrasses). b) features of Sentienl-2 image analyzed. We found that characteristics non-submerged similar terrestrial vegetation these could be extracted by NDVI. different, forming reflection peak at first red edge band (i.e.705 nm) Sentinel-2 design Submerged Seagrasses Identification Index (SSII) extracting seagrass. c) extraction merged map study area. experimental show proposed this can fully consider influence changes identification. SSII constructed based effectively. will provide references integrated ecological management coastal zones.

Language: Английский

Citations

12