The influence of conceptual model uncertainty on management decisions for a groundwater-dependent ecosystem in karst

Gondwe, Bibi Ruth Neuman; Merediz-Alonso, Gonzalo; Bauer‐Gottwein, Peter

doi:10.1016/j.jhydrol.2011.01.023

Cited by 30 publications

(12 citation statements)

References 66 publications

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“…Research in the Yucatan Peninsula has recognized the need to quantify nutrient pollution and identify nutrient sources to preserve freshwater resources and marine coastal habitats (ArandaCirerol et al, 2011;Gondwe et al, 2011;Herrera-Silveira and MoralesOjeda, 2009). In the northwest region of the Yucatan Peninsula, a relationship between increased coastal water nutrient concentrations and human activities, including aquaculture, population density, and tourism has been recognized (ArandaCirerol et al, 2006).…”

Section: Implications For Future Development In Coastal Karstic Systemsmentioning

confidence: 99%

Composition and fluxes of submarine groundwater along the Caribbean coast of the Yucatan Peninsula

Null

Knee

Crook

et al. 2014

Continental Shelf Research

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a b s t r a c tSubmarine groundwater discharge (SGD) to the coastal environment along the eastern Yucatan Peninsula, Quintana Roo, Mexico was investigated using a combination of tracer mass balances and analytical solutions. Two distinct submarine groundwater sources including water from the unconfined surficial aquifer discharging at the beach face and water from a deeper aquifer discharging nearshore through submarine springs (ojos) were identified. The groundwater of nearshore ojos was saline and significantly enriched in short-lived radium isotopes ( 223 Ra, 224 Ra) relative to the unconfined aquifer beach face groundwater. We estimated SGD from ojos using 223 Ra and used a salinity mass balance to estimate the freshwater discharge at the beach face. Analytical calculations were also used to estimate wave set-up and tidally driven saline seepage into the surf zone and were compared to the salinity-based freshwater discharge estimates. ). Discharge at the beach face was in the range of 3.3-8.5 m 3 d À 1 m À 1 for freshwater and 2.7 m 3 d À 1 m À 1 for saline water based on the salinity mass balance and wave-and tidally-driven discharge, respectively. Although discharge from the ojos was larger in volume than discharge from the unconfined aquifer at the beach face, dissolved inorganic nitrogen (DIN) was significantly higher in beach groundwater; thus, discharge of this unconfined beach aquifer groundwater contributed significantly to total DIN loading to the coast. DIN fluxes were up to 9.9 mol d À 1 m À 1 from ojos and 2.1 mol d À 1 m À 1 from beach discharge and varied regionally along the 500 km coastline sampled. These results demonstrate the importance of considering the beach zone as a significant nutrient source to coastal waters for future management strategies regarding nutrient loading to reef environments and coastal development. This study also identifies the importance of understanding the connectivity of submarine spring discharge to the nearshore coastal environment and the impact of inland anthropogenic activities may have on coastal health.

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Section: Implications For Future Development In Coastal Karstic Systemsmentioning

confidence: 99%

Composition and fluxes of submarine groundwater along the Caribbean coast of the Yucatan Peninsula

Null

Knee

Crook

et al. 2014

Continental Shelf Research

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“…Hydrologically, the karstic nature of the YP and its lack of topographic relief constraint the surface water fluxes to ET and precipitation, which quickly infiltrates deep into the substrate due to the high permeability of the soil and rocks of the YP, leading to the formation of groundwater flows. Ecosystems in the YP strongly depend on groundwater resources especially on those areas where the water table is found at less than 30‐m depth (Bauer‐Gottwein et al, ; Gondwe, Lerer, et al, ; Gondwe, Merediz‐Alonso, & Bauer‐Gottwein, ). Previous studies carried out in the aquifer of the Sian Ka'an Biosphere show how the water balance partitioning and the distribution of groundwater recharge are dominated by the vegetation behaviour, geology, topography and by the proximity of the water table to the ground surface (Gondwe, Hong, Wdowinski, & Bauer‐Gottwein, ; Gondwe, Lerer, et al, ).…”

Section: Introductionmentioning

confidence: 99%

On the ecohydrology of the Yucatan Peninsula: Evapotranspiration and carbon intake dynamics across an eco‐climatic gradient

Uuh-Sonda

Gutiérrez-Jurado

Figueroa-Espinoza

et al. 2018

Hydrological Processes

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The hydrology and productivity of the ecosystems of the Yucatan Peninsula (YP) are highly constrained by two factors: (a) the lack of surface drainage networks due to the existence of a highly permeable and connected karstic aquifer roughly the size of the peninsula and (b) a climatic gradient that leads to a transition from seasonally dry deciduous and sub‐deciduous tropical forests, in the north‐western and central parts of the Peninsula, to evergreen forests, in the southern and eastern parts. As a result, surface water fluxes of the YP are restricted to evapotranspiration (ET) that are tightly coupled to ecosystems health and gross primary productivity (GPP). The magnitude and seasonal variation of these fluxes are sensitive to climatic variability and perturbations caused by extreme events such as droughts and tropical storms that are frequent in the YP. In this study, we assess the spatio‐temporal dynamics of ET and GPP above average dry and wet conditions through time series analyses of 15 years of remotely sensed data from both Moderate Resolution Imaging Spectroradiometer and Tropical Rainfall Measuring Mission satellite products. Our results show that ET and GPP follow a regional moisture and temperature gradient that highly controls the distribution of ecosystems within the peninsula. We observe that ET and GPP are in phase with the rainy season in the deciduous forests, but for the evergreen forests, only the GPP is in phase. Additionally, and with the exception of droughts on deciduous ecosystems of the northern part of the YP, the productivity of these ecosystems shows a legacy effect, responding more to a defined trajectory (wetting or drying on the previous years), rather than to punctual extreme climatic events. This has implications on the resilience of these ecosystems to natural perturbations of climate. Comparisons between deciduous and evergreen forest indicate that both types of ecosystems have different plant water use strategies in response to hydrologic variability.

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“…o Hydrogeological units have uncertainties, such as spatial boundaries of or hydrogeological characteristics, that needs to be taken into account in the estimates of recharge. (Gondwe et al, 2011;Priyantha Ranjan et al, 2006).…”

Section: Overviewmentioning

confidence: 99%

“…As expected, most publications adopted hydrogeological units, or part of it, as their spatial boundaries. As these hydrogeological units generally are large formations that can extend across several catchments (Dawes et al, 2012;Gondwe et al, 2011), other characteristics were used to define the spatial 2012) were the only ones to approach the water quality aspect under a future perspective. These futures estimates were based on trends detected.…”

Section: Spatial Dimensionmentioning

confidence: 99%

Groundwater Management in Coastal Areas through Landscape Scale Planning: A Systematic Literature Review

Braga

Serrao‐Neumann

Galvão

2020

Environmental Management

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Groundwater is one of the main resources for society and ecosystems. As part of the total water cycle and deeply connected with land use, many difficulties are present in groundwater management, especially in coastal areas. Landscape Scale Planning is an emerging approach for land use planning providing a framework for management based on evidence, given that landscapes have physical and information flows.Landscape Scale Planning embraces three dimensions: i) the spatial dimension centres on the recognition of distinct landscape units; ii) the temporal dimension entails the first use of a landscape through to its sustainable use by future generations; and iii) the modification dimension involves the anthropogenic alterations that affected and will affect the landscape and its features along the spatial and temporal dimensions. Through a systematic literature and the application of Landscape Scale Planning analytical framework, this paper seeks to analyse if groundwater management can be improved through Landscape Scale Planning. Twenty-eight selected publications were analysed focusing on (i) analyse existing evidence that can underpin groundwater management approaches that take into account the spatial, temporal and modification dimensions; and, (ii) analyse the implications of Landscape Scale Planning for groundwater management. The results show Landscape Scale Planning can be applied as an integrative framework for groundwater management. Landscape units based in many aspects such as geology, topography, cultural, and socio-economics can aid groundwater management that takes into account the different spatial and temporal characteristics of the aquifer. Furthermore, through the application of the Landscape Scale Planning analytical framework, it was identified that the need for the inclusion of the dynamical aspects of land use changes in the processes of groundwater management. Therefore, applying a Landscape Scale Planning approach can produce more comprehensive outcomes to improve the process of groundwater management.

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The influence of conceptual model uncertainty on management decisions for a groundwater-dependent ecosystem in karst

Cited by 30 publications

References 66 publications

Composition and fluxes of submarine groundwater along the Caribbean coast of the Yucatan Peninsula

Composition and fluxes of submarine groundwater along the Caribbean coast of the Yucatan Peninsula

On the ecohydrology of the Yucatan Peninsula: Evapotranspiration and carbon intake dynamics across an eco‐climatic gradient

Groundwater Management in Coastal Areas through Landscape Scale Planning: A Systematic Literature Review

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