Gulf of Mexico estuarine blue carbon stock, extent and flux: Mangroves, marshes, and seagrasses: A North American hotspot

Thorhaug, Anitra; Poulos, Helen M.; López–Portillo, Jorge; Barr, Jordan G.; Lara-Domínguez, Ana Laura; Ku, Timothy C.W.; Berlyn, Graeme P.

doi:10.1016/j.scitotenv.2018.10.011

Cited by 43 publications

(21 citation statements)

References 33 publications

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“…Common strategies are required as problems originating in one country may impact the whole LME [8]. Joint efforts to preserve the Gulf of Mexico's natural resources would allow a dramatic improvement in both ecosystems' health and human development [51], as well as a great climate change mitigation effort through blue carbon storage [18,52], even with small mangroves [53].…”

Section: Discussionmentioning

confidence: 99%

“…Mangroves provide food and shelter for many marine species and birds, and act as natural barriers against hurricanes, tsunamis and sea level rise [17]. Moreover, mangroves are a large carbon stock known as blue carbon [18], and the deforestation of these ecosystems entails large greenhouse gas emissions [19]. Despite all of the above-mentioned, 35% of mangroves were lost worldwide between 1980 and 2000 [16] and still continue to decrease [20].…”

Section: Introductionmentioning

confidence: 99%

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A Spatiotemporal Analysis of Nitrogen Pollution in a Coastal Region with Mangroves of the Southern Gulf of Mexico

Temino-Boes

Romero-López

Romero

2019

Water

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Nitrogen pollution is a growing problem in many rivers and estuaries of the Southern Gulf of Mexico. In Costa Esmeralda, a tourist destination in Veracruz, the increasing nitrogen pollution is causing severe environmental damage. However, very few studies addressed nitrogen pollution and its consequences for beaches and mangroves. In this study, a spatiotemporal evaluation of nitrogen concentrations was performed along two rivers discharging into Costa Esmeralda and the associated mangrove and coastal areas. The data used was obtained from the local government, which measured ammonium, nitrate and organic nitrogen concentrations between 2013 and 2016 with four annual measurements. Clustering analysis was used to detect the nitrogen concentration differences between riverine and coastal sites. Additionally, Mann-Kendall test was used to detect the trends throughout the study period. The Mann-Whitney W-test determined the difference in the median concentrations between the dry and the wet season. The results indicate that organic nitrogen concentrations are increasing in river mouths and coastal waters. Nitrogen pollution caused an intrusion of water hyacinths in touristic beaches and completely covered mangroves. The decomposition of these plants in saline waters was identified as the main potential source of increasing organic concentrations, driven by nitrogen pollution from wastewater, deforestation and fertilizers, and causing many environmental and socio-economic damage to the area. The results shed light on the prevailing water pollution problems in the Southern Gulf of Mexico.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Spatiotemporal Analysis of Nitrogen Pollution in a Coastal Region with Mangroves of the Southern Gulf of Mexico

Temino-Boes

Romero-López

Romero

2019

Water

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“…Coastal Louisiana is an ideal location to study wetland carbon dynamics because it supports various wetland habitats typical in the northern Gulf of Mexico (Hansen & Nestlerode, 2014;Thorhaug et al, 2018;Windham-Myers et al, 2018). Louisiana is also home to approximately 37% of all estuarine herbaceous marshes in the conterminous United States of America (Couvillion et al, 2011) and has experienced some of the greatest wetland loss in the country (Dahl, 2011).…”

Section: Accepted Articlementioning

confidence: 99%

Long‐Term Carbon Sinks in Marsh Soils of Coastal Louisiana are at Risk to Wetland Loss

Baustian

Stagg

Perry³

et al. 2021

JGR Biogeosciences

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• Marsh habitat soils in coastal Louisiana accumulate on average 211 to 381 g TC m-2 yr-1 over the long term (decades) • Louisiana marsh soils bury 4.3 Tg TC yr-1 , accounting for 5 to 21% of global, 47% of North America, and 65% of Gulf of Mexico rates • Half of the current soil carbon sink in coastal Louisiana marshes could be lost in the next 50 years with no coastal restoration activity Accepted Article This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as

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“…The Southern GOM contains coastal lagoons and mangroves, river deltas, and emergent freshwater marshes, also comprising the habitat of wintering migratory birds [39,40]. The Southern GOM ecosystems are more productive than the Northern GOM ecosystems owing to more precipitation, higher temperature, and mangrove ecosystems [41]. Capture Sites And Capture Methods We captured AWPEs on both breeding and non-breeding grounds with rocket nets and modi ed foot-hold traps [42,43].…”

Section: Description Of Study Regionsmentioning

confidence: 99%

Differential migratory movements of geographically distinct wintering populations of a soaring bird

Ogawa

Wang

et al. 2021

Preprint

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Background: Migratory soaring birds exhibit spatiotemporal variation in their circannual movements. We hypothesized that the circadian and seasonal movements of soaring migrants may depend primarily on exogenous factors such as thermals and wind conditions. Nevertheless, it remains uncertain how different winter environments affect the circannual movement patterns of migratory soaring birds. Here, we investigated annual movement strategies of American white pelicans Pelecanus erythrorhynchos (hereafter, AWPE) from two geographically distinct wintering grounds in the Southern and Northern Gulf of Mexico (GOM). Methods: We calculated average and maximum hourly movement distances and seasonal home ranges of GPS-tracking AWPEs. We then evaluated the effects of circadian hours, seasons, two wintering regions in the Southern and Northern GOM, human footprint index, and relative AWPE abundance from Christmas Bird Count data on AWPE hourly movement distances and seasonal home ranges using linear mixed models and generalized linear mixed models. Results: American white pelicans moved at the highest speed near 1200 hours at breeding grounds and during spring and autumn migrations. Both wintering populations in the Northern and Southern GOM exhibited similar hourly movement distances and seasonal home ranges at the shared breeding grounds and during spring and autumn migrations. However, AWPEs wintering in the Southern GOM showed shorter hourly movement distances and smaller seasonal home ranges than those in the Northern GOM. Hourly movement distances and home ranges of AWPEs increased with increasing human footprint index.Conclusions: Winter hourly movements and home ranges of AWPEs differed between the Northern and Southern GOM; however, the difference in AWPE winter movements did not carry over to the shared breeding grounds during summers. Therefore, exogenous factors may be the primary drivers to shape the flying patterns of migratory soaring birds.

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Gulf of Mexico estuarine blue carbon stock, extent and flux: Mangroves, marshes, and seagrasses: A North American hotspot

Cited by 43 publications

References 33 publications

A Spatiotemporal Analysis of Nitrogen Pollution in a Coastal Region with Mangroves of the Southern Gulf of Mexico

A Spatiotemporal Analysis of Nitrogen Pollution in a Coastal Region with Mangroves of the Southern Gulf of Mexico

Long‐Term Carbon Sinks in Marsh Soils of Coastal Louisiana are at Risk to Wetland Loss

Differential migratory movements of geographically distinct wintering populations of a soaring bird

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