Featured
-
-
Article
| Open AccessVegetation dieback in the Mississippi River Delta triggered by acute drought and chronic relative sea-level rise
Coastal wetlands are vulnerable to sea-level rise. Here, the authors use 16 years of data to correlate vegetation dieback in the Mississippi River Delta to drought-induced salt water intrusion in the summer of 2012.
- Tracy Elsey-Quirk
- , Austin Lynn
- & Dubravko Justic
-
Article
| Open AccessRevealing the hidden carbon in forested wetland soils
A large proportion of wetland extent is not mapped in currently available national datasets. Incorporating newly revealed wetlands into soil carbon mapping methods increases estimates of wetland soil carbon stock by 482%.
- Anthony J. Stewart
- , Meghan Halabisky
- & L. Monika Moskal
-
Article
| Open AccessClimate warming and elevated CO2 alter peatland soil carbon sources and stability
No inherently stable peat soil carbon. Researchers found that all molecular components of peatland soil organic carbon responded to warming and eCO2, including the components presumed to be slow cycling and stable.
- Nicholas O. E. Ofiti
- , Michael W. I. Schmidt
- & Avni Malhotra
-
Article
| Open AccessEnhancing rice production sustainability and resilience via reactivating small water bodies for irrigation and drainage
Ponds played an important role in ancient rice-growing regions such as China and India. Here, the authors find that reviving small water bodies to recycle drainage water for irrigation can reduce China’s rice production water footprint by 9% and alleviate 2-3% yield loss in dry years.
- Sisi Li
- , Yanhua Zhuang
- & Liang Zhang
-
Article
| Open AccessEarly indicators of tidal ecosystem shifts in estuaries
Transitions from bare tidal flats to vegetated marshes are an example of shift between alternative stable ecosystem states. Here, the authors use remote sensing and modelling to quantify three stages in tidal flat evolution and identify early warning signals.
- Gregory S. Fivash
- , Stijn Temmerman
- & Tjeerd J. Bouma
-
Article
| Open AccessClimate-driven tradeoffs between landscape connectivity and the maintenance of the coastal carbon sink
Coastal connectivity between ecosystems increases with sea level rise but fails to maintain landscape carbon storage and marsh extent at extreme rates of sea level rise.
- Kendall Valentine
- , Ellen R. Herbert
- & Matthew L. Kirwan
-
Article
| Open AccessDrivers of global mangrove loss and gain in social-ecological systems
Mangrove forests protect communities from storms and support fisheries. Here, the authors show that the association with economic growth has shifted from negatively impacting mangroves to enabling mangrove expansion, and that community forestry is promoting mangrove expansion.
- Valerie Hagger
- , Thomas A. Worthington
- & Megan I. Saunders
-
Article
| Open AccessRecent climate change has driven divergent hydrological shifts in high-latitude peatlands
A recent synthesis study found 54% of the high-latitude peatlands have been drying and 32% have been wetting over the past centuries, illustrating their complex ecohydrological dynamics and highly uncertain responses to a warming climate.
- Hui Zhang
- , Minna Väliranta
- & Yan Zhao
-
Article
| Open AccessSalt marshes create more extensive channel networks than mangroves
A comparison of salt marsh and mangrove channel networks around the world exhibited different network extents. This could be linked to differences in vegetation colonization strategies, with major implications on coastal development.
- Christian Schwarz
- , Floris van Rees
- & Barend van Maanen
-
Article
| Open AccessTrade-off between tree planting and wetland conservation in China
Afforestation and reforestation programs aimed at enhancing carbon sequestration may have unintended effects on non-forest ecosystems and biodiversity. Here the authors use remote sensing and land surface modelling to quantify trade-offs between tree planting and wetland conservation in China
- Yi Xi
- , Shushi Peng
- & Xutao Tang
-
Article
| Open AccessCutting the costs of coastal protection by integrating vegetation in flood defences
Nearly one-third of the global coastline is vegetated. Incorporating these vegetation belts in coastal protection strategies would result in more sustainable and financially-attractive designs to mitigate the impacts of extreme coastal storms.
- Vincent T. M. van Zelst
- , Jasper T. Dijkstra
- & Mindert B. de Vries
-
Article
| Open AccessA large invasive consumer reduces coastal ecosystem resilience by disabling positive species interactions
Invasive species could have cascading effects on ecosystem functioning. Here the authors use experimental and remote sensing data and modelling to show that an invasive mammal causes loss of facilitative interactions between sessile ecosystem engineers in salt marshes, and lower ecosystem resilience to disturbance.
- Marc J. S. Hensel
- , Brian R. Silliman
- & Jarrett E. K. Byrnes
-
Article
| Open AccessStorm surge and ponding explain mangrove dieback in southwest Florida following Hurricane Irma
Mangroves are adapted to cope with tropical storms, but might be threatened by rising frequency and intensity of these events. Here the authors document one of the largest mangrove diebacks on record following Hurricane Irma in Florida, and show a greater role of storm surge and ponding rather than wind as a mechanism for mangrove dieback.
- David Lagomasino
- , Temilola Fatoyinbo
- & Douglas C. Morton
-
Article
| Open AccessCo-benefits of protecting mangroves for biodiversity conservation and carbon storage
Conserving mangrove biodiversity has numerous co-benefits, including climate change-mitigation. Here the authors demonstrate that blue carbon storage in mangroves can be best sustained by combining site-specific dominant species with other species with contrasting functional traits.
- Md Mizanur Rahman
- , Martin Zimmer
- & Ming Xu
-
Article
| Open AccessGlobal patterns of the leaf economics spectrum in wetlands
Leaf economics spectrum theory has greatly advanced understanding of plant functional ecology, but it is unclear whether its predictions hold in wetland communities. Here, Pan and colleagues analyse leaf economics traits in wetland plants, showing that their trait relationships deviate from fully terrestrial plants, particularly by clustering towards acquisitive plant strategies.
- Yingji Pan
- , Ellen Cieraad
- & Peter M. van Bodegom
-
Article
| Open AccessMimicry of emergent traits amplifies coastal restoration success
Coastal restoration tends to be failure-prone and expensive. Temmink and colleagues improve seagrass and cordgrass transplant survival in field experiments using biodegradable structures which temporarily mimic self-facilitation occurring in mature vegetation stands, and combine onsite and laboratory measurements on sediment stability and stem movement to test the biophysical mechanisms.
- Ralph J. M. Temmink
- , Marjolijn J. A. Christianen
- & Tjisse van der Heide
-
Article
| Open AccessImproved estimates on global carbon stock and carbon pools in tidal wetlands
Wetlands are global hotspots of carbon storage, but errors exist with current estimates of the extent of their carbon density. Here the authors show that mangrove sediment organic carbon stock has previously been overestimated, while ecosystem carbon stock has been underestimated.
- Xiaoguang Ouyang
- & Shing Yip Lee
-
Article
| Open AccessTidal wetland resilience to sea level rise increases their carbon sequestration capacity in United States
It remains challenging to estimate carbon accumulation rates in tidal wetlands on a scale as large as the conterminous US. Here, the authors find that mean C accumulation rates vary greatly among watershed regions but not among vegetation types, and that tidal wetlands’ C sequestration capability will remain or increase by 2100, suggesting a resilience to sea level rise.
- Faming Wang
- , Xiaoliang Lu
- & Jianwu Tang
-
Article
| Open AccessRapid inundation of southern Florida coastline despite low relative sea-level rise rates during the late-Holocene
Sea-level rise threatens coastal mangroves, with global consequences for these important blue carbon sinks. Here the authors analyse four Holocene sediment cores from islands in Florida Bay and find that mangroves that comprised the South Florida coastline 4–3000 years ago rapidly transitioned to estuarine conditions, despite low rates of sea-level rise, and propose that their demise was driven by high climate variability.
- Miriam C. Jones
- , G. Lynn Wingard
- & Christopher E. Bernhardt
-
Article
| Open AccessBiologically driven DOC release from peatlands during recovery from acidification
Peatlands recovering from acidification release dissolved organic carbon (DOC), but no biological role has yet been identified in this process. Here, the authors show that pH increases enhance phenol oxidase activity, pore-water DOC concentrations and lead to greater abundances in Actinobacteria and fungi.
- Hojeong Kang
- , Min Jung Kwon
- & Chris Freeman
-
Article
| Open AccessTropical peatland carbon storage linked to global latitudinal trends in peat recalcitrance
Large peatlands exist at high latitudes because flooded conditions and cold temperatures slow decomposition, so the presence of (sub)tropical peat is enigmatic. Here the authors show that low-latitude peat is preserved due to lower carbohydrate and greater aromatic content resulting in chemical recalcitrance.
- Suzanne B. Hodgkins
- , Curtis J. Richardson
- & Jeffrey P. Chanton
-
Article
| Open AccessWildfire as a major driver of recent permafrost thaw in boreal peatlands
Future permafrost thaw may be underestimated unless effects of wildfire are considered. Here the authors show that wildfires in boreal permafrost peatlands influence soil temperature and seasonal thaw depth for several decades, and increase the rate of complete permafrost thaw along permafrost edges.
- Carolyn M. Gibson
- , Laura E. Chasmer
- & David Olefeldt
-
Article
| Open AccessTiming anthropogenic stressors to mitigate their impact on marine ecosystem resilience
Stressors such as sediment dredging can harm marine organisms, but this impact could be minimised if targeted within ‘ecological windows’. Here, Wu and colleagues develop a modelling framework to identify ecological windows that maximise seagrass resilience under varying dredging schedules.
- Paul Pao-Yen Wu
- , Kerrie Mengersen
- & M. Julian Caley
-
Article
| Open AccessVegetation recovery in tidal marshes reveals critical slowing down under increased inundation
Theory and controlled experiments have shown that the recovery rate of an ecological variable from perturbation slows down before a critical tipping point. Here, van Belzen and colleagues demonstrate that slowed vegetation recovery to disturbance is also apparent in the natural system of a tidal marsh.
- Jim van Belzen
- , Johan van de Koppel
- & Tjeerd J. Bouma
-
Article
| Open AccessRapid population decline in migratory shorebirds relying on Yellow Sea tidal mudflats as stopover sites
Stopover sites are crucial to migratory birds, but the influence of this habitat on population dynamics has not been quantified. Here, Studds et al. show that, among ten migratory species, the degree of reliance on disappearing stopover habitat in the Yellow Sea tidal flats predicts the extent of recent population declines.
- Colin E. Studds
- , Bruce E. Kendall
- & Richard A. Fuller
-
Article
| Open AccessSpatially integrative metrics reveal hidden vulnerability of microtidal salt marshes
Point measurements have historically been used to assess salt marsh vulnerability; however, these metrics do not integrate over the necessary spatiotemporal scales. Here, the authors show that two geomorphic-based, spatiotemporally integrative metrics reveal vulnerability not captured by traditional metrics.
- Neil K. Ganju
- , Zafer Defne
- & Luca Carniello
-
Article
| Open AccessCarbon storage in US wetlands
Wetlands store large quantities of carbon, the distribution and quantity of which is little known. Here, Nahlik and Fennessy use data collected as part of the 2011 National Wetland Condition Assessment to estimate wetland carbon stocks across the United States, illustrating total storage of 11.52 PgC.
- A. M. Nahlik
- & M. S. Fennessy
-
Article
| Open AccessSalt marsh vegetation promotes efficient tidal channel networks
Tidal channel networks mediate the exchange of water, nutrients, sediment and biota between an estuary and marshes. Here, the authors show that the presence of vegetation on the marsh platform contributes to the formation of an efficient channel network.
- William S. Kearney
- & Sergio Fagherazzi