Recent Accretion in Mangrove Ecosystems Based on 137 Cs and 210 Pb

Lynch, James C.; Meriwether, J.; McKee, Brent A.; Vera-Herrera, Francisco; Twilley, Robert R.

doi:10.2307/1351907

Cited by 161 publications

(78 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Data on the contribution of subtropical and tropical mangrove wetlands to the global carbon budget are limited [11,13,24,25]. Although soil carbon stocks in boreal regions are high, the rates of carbon accumulation are quite low [1].…”

Section: Introductionmentioning

confidence: 99%

Carbon Sequestration and Sedimentation in Mangrove Swamps Influenced by Hydrogeomorphic Conditions and Urbanization in Southwest Florida

Marchio

Savarese

Bovard

et al. 2016

Forests

View full text Add to dashboard Cite

This study compares carbon sequestration rates along two independent tidal mangrove creeks near Naples Bay in Southwest Florida, USA. One tidal creek is hydrologically disturbed due to upstream land use changes; the other is an undisturbed reference creek. Soil cores were collected in basin, fringe, and riverine hydrogeomorphic settings along each of the two tidal creeks and analyzed for bulk density, total organic carbon profiles, and sediment accretion. Radionuclides 137 Cs and 210 Pb were used to estimate recent sediment accretion and carbon sequestration rates.Carbon sequestration rates (mean˘standard error) for seven sites in the two tidal creeks on the Naples Bay (98˘12 g-C m´2¨year´1 (n = 18)) are lower than published global means for mangrove wetlands, but consistent with other estimates from the same region. Mean carbon sequestration rates in the reference riverine setting were highest (162˘5 g-C m´2¨year´1), followed by rates in the reference fringe and disturbed riverine settings (127˘6 and 125˘5 g-C m´2¨year´1, respectively). The disturbed fringe sequestered 73˘10 g-C m´2¨year´1, while rates within the basin settings were 50˘4 g-C m´2¨year´1 and 47˘4 g-C m´2¨year´1 for the reference and disturbed creeks, respectively. These data support our hypothesis that mangroves along a hydrologically disturbed tidal creek sequestered less carbon than did mangroves along an adjacent undisturbed reference creek.

show abstract

Section: Introductionmentioning

confidence: 99%

Carbon Sequestration and Sedimentation in Mangrove Swamps Influenced by Hydrogeomorphic Conditions and Urbanization in Southwest Florida

Marchio

Savarese

Bovard

et al. 2016

Forests

View full text Add to dashboard Cite

show abstract

“…A list of chemical properties of the radionuclide 210 Pb and of its parent in decay series of 238 U favors its use in the application in recent sediment cycles. 2 It has been successfully used in lakes [3][4][5][6][7] estuaries, [7][8][9][10][11][12] inner continental plataforms [13][14][15] and mangrove ecosystems. 15-19 210 Pb geochronologies are especially significant when confirmed by anthropogenic signatures in sediment profiles.…”

Section: Introductionmentioning

confidence: 99%

A historical evaluation of anthropogenic impact in coastal ecosystems by geochemical signatures

Patchineelam¹,

Sanders²,

Smoak³

et al. 2011

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

“…In fact, available data on the piling-up rates suggest that many coastal marshes accrete at rates well comparable to sea level rise (e.g. Wood et al, 1989;Reed, 1990;Lynch et al, 1989;Day and Templet, 1989;Parkinson et al, 1994;Kearney et al, 1994).…”

Section: Mangrove Plantation For Mitigating Floodsmentioning

confidence: 99%

Mangrove forest against dyke-break-induced tsunami on rapidly subsiding coasts

Takagi

Mikami

Fujii

et al. 2016

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. Thin coastal dykes typically found in developing countries may suddenly collapse due to rapid land subsidence, material ageing, sea-level rise, high wave attack, earthquakes, landslides, or a collision with vessels. Such a failure could trigger dam-break tsunami-type flooding, or "dyke-break-induced tsunami", a possibility which has so far been overlooked in the field of coastal disaster science and management. To analyse the potential consequences of one such flooding event caused by a dyke failure, a hydrodynamic model was constructed based on the authors' field surveys of a vulnerable coastal location in Jakarta, Indonesia. In a 2 m land subsidence scenario -which is expected to take place in the study area after only about 10-20 years -the model results show that the floodwaters rapidly rise to a height of nearly 3 m, resembling the flooding pattern of earthquakeinduced tsunamis. The depth-velocity product criterion suggests that many of the narrow pedestrian paths behind the dyke could experience strong flows, which are far greater than the safe limits that would allow pedestrian evacuation. A couple of alternative scenarios were also considered to investigate how such flood impacts could be mitigated by creating a mangrove belt in front of the dyke as an additional safety measure. The dyke-break-induced tsunamis, which in many areas are far more likely than regular earthquake tsunamis, cannot be overlooked and thus should be considered in disaster management and urban planning along the coasts of many developing countries.

show abstract

Recent Accretion in Mangrove Ecosystems Based on 137 Cs and 210 Pb

Cited by 161 publications

References 33 publications

Carbon Sequestration and Sedimentation in Mangrove Swamps Influenced by Hydrogeomorphic Conditions and Urbanization in Southwest Florida

Carbon Sequestration and Sedimentation in Mangrove Swamps Influenced by Hydrogeomorphic Conditions and Urbanization in Southwest Florida

A historical evaluation of anthropogenic impact in coastal ecosystems by geochemical signatures

Mangrove forest against dyke-break-induced tsunami on rapidly subsiding coasts

Contact Info

Product

Resources

About