Conservation of the Mekong Delta wetlands through hydrological management

Quan, Nguyen Hong; Toan, To Quang; Dang, Phan Doan; Phương, Nguyễn Thu; Anh, Tran Thi Hoang; Quảng, Ngô Xuân; Quoc, Dao Phu; Quoi, Le Phat; Hanington, Peter; Sea, William B.

doi:10.1007/s11284-017-1545-1

Cited by 21 publications

(9 citation statements)

References 51 publications

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“…Agricultural production contributes to GDP strongly (Smajgl et al, 2015;Hossain et al, 2018), making agricultural fields important assets. In both deltas, mangroves are partially degraded (Ghosh et al, 2018;Veettil et al, 2018) as well as other wetlands at the coast and further inland (Quan et al, 2018a;Rahman et al, 2018). Currently, riverine flooding dominates in both deltas (Auerbach et al, 2015;Rahman and Rahman, 2015;Ngan et al, 2018).…”

Section: Future Risksmentioning

confidence: 99%

Sea Level Rise and Implications for Low-Lying Islands, Coasts and Communities

2022

The Ocean and Cryosphere in a Changing Climate

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This chapter assesses past and future contributions to global, regional and extreme sea level changes, associated risk to low-lying islands, coasts, cities, and settlements, and response options and pathways to resilience and sustainable development along the coast. ObservationsGlobal mean sea level (GMSL) is rising (virtually certain 1 ) and accelerating (high confidence 2 ). The sum of glacier and ice sheet contributions is now the dominant source of GMSL rise (very high confidence). GMSL from tide gauges and altimetry observations increased from 1.4 mm yr -1 over the period 1901-1990 to 2.1 mm yr -1 over the period 1970-2015 to 3.2 mm yr -1 over the period 1993-2015 to 3.6 mm yr -1 over the period 2006-2015 (high confidence). The dominant cause of GMSL rise since 1970 is anthropogenic forcing (high confidence). {4.2.2.1.1, 4.2.2.2} GMSL was considerably higher than today during past climate states that were warmer than pre-industrial, including the Last Interglacial (LIG; 129-116 ka), when global mean surface temperature was 0.5ºC-1.0ºC warmer, and the mid-Pliocene Warm Period (mPWP; ~3.3 to 3.0 million years ago), 2ºC-4ºC warmer. Despite the modest global warmth of the Last Interglacial, GMSL was likely 6-9 m higher, mainly due to contributions from the Greenland and Antarctic ice sheets (GIS and AIS, respectively), and unlikely more than 10m higher (medium confidence). Based on new understanding about geological constraints since the IPCC 5th Assessment Report (AR5), 25 m is a plausible upper bound on GMSL during the mPWP (low confidence). Ongoing uncertainties in palaeo sea level reconstructions and modelling hamper conclusions regarding the total magnitudes and rates of past sea level rise (SLR). Furthermore, the long (multi-millennial) time scales of these past climate and sea level changes, and regional climate influences from changes in Earth's orbital configuration and climate system feedbacks, lead to low confidence in direct comparisons with near-term future changes. {Cross-Chapter Box 5 in Chapter 1, 4.

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Section: Future Risksmentioning

confidence: 99%

Sea Level Rise and Implications for Low-Lying Islands, Coasts and Communities

2022

The Ocean and Cryosphere in a Changing Climate

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“…Melaleuca soil samples were collected from a freshwater Melaleuca forest in U Minh Thuong NP, Mekong River Delta, Southern Vietnam (Fig. 1a), which was designated a Ramsar site in 2016 (Quan et al, 2018). U Minh Thuong NP is located in the upper region of U Minh forest, a peat swamp ecosystem covering 600 km 2 (CARE, 2004).…”

Section: Study Sitesmentioning

confidence: 99%

Restoration impacts on rates of denitrification and greenhouse gas fluxes from tropical coastal wetlands

Comer‐Warner

Nguyen²,

Nguyen³

et al. 2022

Science of The Total Environment

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“…Like other conservation wetlands in the Mekong Delta (see e.g. Torell et al, 2003;Anh, 2013;Quan et al, 2018), the natural flooding regimes of UMTNP wetland were considerably modified by the establishment of hydraulic infrastructure such as dykes, sluice gates and canals for water management and fire prevention. Fear of wildfire and lack of knowledge about wetland hydrology and dynamics led to inappropriate management decisions which established a permanent flooding regime in the park.…”

Section: Discussionmentioning

confidence: 95%

Enhancing bird diversity through improved water management in a Viet Nam wetland national park

Cuong¹,

Dart²,

Brown³

et al. 2019

PARKS

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U Minh Thuong National Park, one of the two largest remaining peat swamp, melaleuca forests in Viet Nam is a very Important Bird and Conservation Area because of its diverse wetland habitats. A devastating forest fire in 2002 resulted in a new regime of fire control based on an imposed permanent flooding regime over large areas of the Park that led to severe wetland and forest degradation. This in turn negatively impacted on bird species diversity and populations. In 2009, the Government of Viet Nam and the park authority adopted an improved water management practice. A survey four years later recorded two new species in the list of 159 bird species for the park. Of these, 25 threatened species were using the wetland park and adjacent Buffer Zone for living and feeding habitat. Based on the largest count occurring during three continuous days, the water bird population in the bird colony in 2013 increased by 33 per cent compared to the 2009 level. The positive response of avifauna to the changes in U Minh Thuong with respect to the hydrology of seasonally flooded melaleuca wetland forest indicates the need to understand how the 'normal' wetland processes operate in support of biodiversity conservation before modifying them for fire management.

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Conservation of the Mekong Delta wetlands through hydrological management

Cited by 21 publications

References 51 publications

Sea Level Rise and Implications for Low-Lying Islands, Coasts and Communities

Sea Level Rise and Implications for Low-Lying Islands, Coasts and Communities

Restoration impacts on rates of denitrification and greenhouse gas fluxes from tropical coastal wetlands

Enhancing bird diversity through improved water management in a Viet Nam wetland national park

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