Detecting changes resulting from human pressure in a naturally quick-changing and heterogeneous environment: Spatial and temporal scales of variability in coastal lagoons

Pérez‐Ruzafa, Á.; Marcos, Concepción; Pérez-Ruzafa, Isabel; Barcala, Elena; Hegazi, M.I.; Quispe, Jhoni Ismael

doi:10.1016/j.ecss.2007.04.030

Cited by 93 publications

(59 citation statements)

References 25 publications

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“…Kjerfve (1994) has proposed a synthesis aiming at describing various components of coastal lagoons, such as for instance, their geomorphology, the involved physical processes (see also Smith, 1994) or the monitoring of ecosystems. Most of the studies conducted over the Mediterranean coastal lagoons aimed at monitoring the aquatic flora and fauna (Perez-Ruzafa, 2007;Derolez et al, 2013). However, environmental issues related to air quality were the source of an increasing number of studies (Flocas et al, 2009;Kanakidou et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the lake model FLake over a coastal lagoon during the THAUMEX field campaign

Moigne¹,

Legain²,

Lagarde³

et al. 2013

Tellus A: Dynamic Meteorology and Oceanography

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A B S T R A C T The THAUMEX measurement campaign, carried out during the summer of 2011 in Thau, a coastal lagoon in southern France, focused on episodes of marine breezes. During the campaign, three intensive observation periods (IOPs) were conducted and a large amount of data were collected. Subsequently, standalone modelling using the FLake lake model was used, first to assess the surface temperature and the surface energy balance, and second to determine the energy budget of the water column at the measurement site. Surface fluxes were validated against in situ measurements, and it was determined that heat exchanges are dominated by evaporation. We also demonstrated that the model was sensitive to the light extinction coefficient at Thau, due to its shallowness and clarity nature. A heat balance was calculated, and the inclusion of a radiative temperature has improved it, especially by reducing the nocturnal evaporation. The FLake lake model was then evaluated in three-dimensional numerical simulations performed with the Meso-NH mesoscale model, in order to assess the changing structure of the boundary layer above the lagoon during the IOPs more accurately. We highlighted the first time ever when Meso-NH and FLake were coupled and proved the ability of the coupled system to forecast a complex phenomenon but also the importance of the use of the FLake model was pointed out. We demonstrated the impact of the lagoon and more precisely the Lido, a sandy strip of land between the lagoon and the Mediterranean Sea, on the vertical distribution of turbulent kinetic energy, evidence of the turbulence induced by the breeze. This study showed the complementarities between standalone and coupled simulations.

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Section: Introductionmentioning

confidence: 99%

Evaluation of the lake model FLake over a coastal lagoon during the THAUMEX field campaign

Moigne¹,

Legain²,

Lagarde³

et al. 2013

Tellus A: Dynamic Meteorology and Oceanography

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“…In the case of inland wetland from the Iberian Peninsula record of macrophytes species has been used to assess the botany value of wetland (Cirujano & al., 1992). This study only took into account regional or local scales, but more accurate studies using spatial fine scales and adequate sampling protocols considering the potentially relevant range of space (Pérez-Ruzafa & al., 2007) are necessary to test the existence of general patterns in the system (Anderson & al., 2005). The use of fine scale mapping of wetlands is useful for analysing variability within individual wetlands and assessing the source of variability (Feldmann & Nõges, 2007).…”

Section: Field Data Collectionmentioning

confidence: 99%

Submerged macrophyte biomass distribution in the shallow saline lake Fuente de Piedra (Spain) as function of environmental variables

Conde-Álvarez¹,

Bañares‐España²,

Nieto-Caldera³

et al. 2012

Anal. Jard. Bot. Madr.

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Conde-Álvarez, R.M., Bañares-España, E., Nieto-Caldera, J.M., FloresMoya, A. & Figueroa, F.L. 2012. Submerged macrophyte biomass distribution in the shallow saline lake Fuente de Piedra (Spain) as function of environmental variables. Anales Jard. Bot. Madrid 69(1): 119-127.Aquatic macrophyte biomass, diaspore bank distribution and their relationship to spatial variability of depth, nutrients (nitrite, nitrate, ammonium and soluble reactive phosphorus) as well as sediment granulometry in an athalassohaline lake have been studied during one wet hydrological year. The results indicate that species growing in the lake show different spatial distribution patterns throughout the lake. Indirect gradient analysis (canonical analysis) results showed a first axis defined as a function of Ulva flexuosa Wulfen biomass which is, in turn, positively correlated with interstitial ammonium and Soluble Reactive Phosphorus (SRP). The second axis was mainly established due to Lamprothamnium papulosum (Wallr.) J. Groves biomass which correlated positively to depth and negatively to interstitial ammonium and SRP. These results revealed a NE-SW eutrophic gradient allowing the U. flexuosa biomass proliferation. This phenomenon could increase the shadow effect over the rest of the macrophytes inhabiting this shallow lake. Moreover, the eutrophic harmful effect on the macrophyte physiology and over the diaspore bank could have important consequences in the survival of such important populations. The results reported in this study show the need for studies as the base to select sampling points for monitoring this wetland.Keywords: submerged macrophytes, eutrophication, lakes, maps, Fuente de Piedra, Spain. ResumenConde-Álvarez, R.M., Bañares-España, E., Nieto-Caldera, J.M., FloresMoya, A. & Figueroa, F.L. 2012. Distribución de la biomasa de los macrófitos sumergidos en la laguna salina somera de Fuente de Piedra (España) en función de las variables ambientales. Anales Jard. Bot. Madrid 69(1): 119-127 (en inglés).La distribución de la biomasa de los macrófitos acuáticos y de su banco de semillas y oogonios ha sido investigada en relación a la profundidad, los nutrientes (nitrito, nitrato, amonio y fósforo soluble reactivo) y la granulometría del sedimento durante un año hidrológico húmedo. Los resultados muestran patrones de distribución diferentes en las distintas especies. Los resultados del análisis canónico basado en análisis de gradiente indirecto muestran un primer eje definido en función de la biomasa de Ulva flexuosa Wulfen que, a su vez, está positivamente correlacionada con el amonio intersticial y el fosfato soluble. El segundo eje se establecía principalmente en función de la biomasa de Lamprothamnium papulosum (Wallr.) J. Groves, que a su vez estaba positivamente relacionada con la profundidad y negativamente correlacionada con el amonio intersticial y el fosfato soluble. Estos resultados ponen de manifiesto un gradiente NE-SW de eutrofización que induce la proliferación de U. flexuosa, lo que podría contribuir a aumen...

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“…However, the growth in human population and the growth in per-capita resource consumption have jeopardized the health of many ecosystems around the world [4] [5] [6] [7]. The ESS related to water (ESSw) are among the most threatened because they are found in all ESS categories described by the [1] and therefore are more exposed to anthropogenic interference.…”

Section: Introductionmentioning

confidence: 99%

“…The ESS related to water (ESSw) are among the most threatened because they are found in all ESS categories described by the [1] and therefore are more exposed to anthropogenic interference. In many areas across the globe, human settlements have encroached aquatic and related terrestrial ecosystems including wetlands, marine coastlines, lakes, and mangrove forest, polluting and disturbing theses environments while increasing resource scarcity [4] [8] [9]. Establishing "boundaries" that must not be transgressed could help prevent human activities from causing damage to aquatic ecosystems, but this will also automatically affect societies economies [10].…”

Section: Introductionmentioning

confidence: 99%

Measuring the Total Economic Value of Traditional Sand Dredging in the Coastal Lagoon Complex of Grand-Nokoué (Benin)

Djihouessi¹,

Aïna²,

Kpanou³

et al. 2017

JEP

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Sand is a crucial resource for society's development. Among the most exploited sand quarries in the world are the lagoon and wetland sand. Although mechanical sand dredging is the most spread technique, manual and traditional techniques are still widely used in West Africa. The purpose of this paper is twofold: to describe traditional sand dredging (TSD), highlighting the procedure used and the structural organization of this activity, and to evaluate the total economic value of TSD in order to help decision making about wetland management. Therefore, TSD occurring in the coastal lagoon complex of Grand Nokoué (CLCGN) in Benin was investigated. Field surveys indicate that TSD is mainly dominated by men, about 93% of the actors. It required intense physical efforts including diving to the bottom of the lake and removing manually the sand in backed toward the surface of the water. TSD actors are organized in local associations which deliver extraction license and discuss with both the others actors and the local government. The total economic value of the benefits of TSD to the population, estimated using direct market value and replacement cost, was estimated at 2.44 million USD per year for 127,818 m 3 of sand extracted. It is clear that introduction of mechanical sand dredging will increase the amount the sand removed and subsequently will increase some benefits such as reduction of flooding amplitude and mitigation of the filling of the lakes. However, mechanical sand removal will also considerably reduce the profit the local population makes from sand commercialization which currently represents 80% the total economic value of TSD.

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Detecting changes resulting from human pressure in a naturally quick-changing and heterogeneous environment: Spatial and temporal scales of variability in coastal lagoons

Cited by 93 publications

References 25 publications

Evaluation of the lake model FLake over a coastal lagoon during the THAUMEX field campaign

Evaluation of the lake model FLake over a coastal lagoon during the THAUMEX field campaign

Submerged macrophyte biomass distribution in the shallow saline lake Fuente de Piedra (Spain) as function of environmental variables

Measuring the Total Economic Value of Traditional Sand Dredging in the Coastal Lagoon Complex of Grand-Nokoué (Benin)

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Detecting changes resulting from human pressure in a naturally quick-changing and heterogeneous environment: Spatial and temporal scales of variability in coastal lagoons

Cited by 93 publications

References 25 publications

Evaluation of the lake model FLake over a coastal lagoon during the THAUMEX field campaign

Evaluation of the lake model FLake over a coastal lagoon during the THAUMEX field campaign

Submerged macrophyte biomass distribution in the shallow saline lake Fuente de Piedra (Spain) as function of environmental variables

Measuring the Total Economic Value of Traditional Sand Dredging in the Coastal Lagoon Complex of Grand-Nokou&#233; (Benin)

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Measuring the Total Economic Value of Traditional Sand Dredging in the Coastal Lagoon Complex of Grand-Nokoué (Benin)