Artificial ponds in a Mediterranean region (Andalusia, southern Spain): agricultural and environmental issues

Casas, J. Jesús; Toja, Julia; Bonachela, S.; Fuentes, Fernanda; Gallego, Irene; Juan, Melchor; Salas‐de‐León, David Alberto; Peñalver, Patricio; Pérez, Carmen C. Pons; Sánchez, Pedro

doi:10.1111/j.1747-6593.2010.00221.x

Cited by 43 publications

(53 citation statements)

References 17 publications

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“…One issue for such modelling is the determination of the geolocalization and volumes stored in the numerous reservoirs. Several studies have focused on determining the number and extent of small farm reservoirs using satellite data (Bhagat and Sonawane, 2011;Casas et al, 2011;Rodrigues et al, 2012;Shao et al, 2012). A few authors have been able to conduct detailed studies of the impact on hydrology, based on the simulation of a large number of small farm dams.…”

Section: Introductionmentioning

confidence: 99%

Small farm dams: impact on river flows and sustainability in a context of climate change

Habets

Philippe

Martin³

et al. 2014

Hydrol. Earth Syst. Sci.

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Abstract. The repetition of droughts in France has led to a growing demand for irrigation water and consequently to an increase in requests for the construction of small farm dams. Although such dams are small, their accumulation in a basin affects river flows, because the water collected in these small farm dams is used for irrigation and thus does not contribute to river flow. In order to gain more insight into their impact on the annual and monthly discharges, especially during dry years, a small farm dam model was built and connected to a hydrometeorological model. Several scenarios with different volume capacities, filling catchment sizes and filling periods were tested for such dams. The results were analysed in a small basin in western France, where the pressure for building such dams is high, and then extended to the entire country. It was found that, due to the hydrometeorological conditions (mainly low precipitation compared to other regions in France), the development of small farm dams in north-western France would result in greater decreases in river flows and less efficient filling of small farm dams than in other regions. Therefore, such dams might not be as efficient as expected in supplying water to farmers when needed. Moreover, the ability to fill small farm dams is projected to decrease in a context of climate change, despite the uncertainty on the evolution of precipitation, thus worsening the situation.

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Section: Introductionmentioning

confidence: 99%

Small farm dams: impact on river flows and sustainability in a context of climate change

Habets

Philippe

Martin³

et al. 2014

Hydrol. Earth Syst. Sci.

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“…Michel et al, 2007) and has had major impacts on inland aquatic ecosystems (Dudgeon et al, 2006). Knutson et al, 2004;Mushtaq, Dawe & Hafeez, 2007;Lutton, Sheldon & Bunn, 2010), which are potentially valuable for biodiversity conservation (Lutton et al, 2010;Casas et al, 2011bCasas et al, , 2012. This expansion has been accompanied in Spain, as well as in other world regions, by the construction of in-farm water storages (e.g.…”

Section: Introductionmentioning

confidence: 99%

Diversity in Mediterranean farm ponds: trade‐offs and synergies between irrigation modernisation and biodiversity conservation

et al. 2012

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1. Agricultural intensification has caused dramatic biodiversity loss in many agricultural landscapes over the last century. Here, we investigated whether new types of farm ponds (made of artificial substrata) in intensive systems and natural-substratum ponds in traditional farming systems differ in their value for aquatic biodiversity conservation. 2. We analysed the main patterns of environmental variation, compared a-, b- and c-diversity of macroinvertebrates between ponds types and evaluated the role of submerged aquatic vegetation (SAV). Generalised additive models (GAM) were used to analyse the relationships of a- and b-diversity with environmental predictors, and variation partitioning to separate the effect of environmental and spatial characteristics on the variation in macroinvertebrate assemblages. Moran’s eigenvector maps (MEMs) were used to define spatial variables. 3. A principal coordinate analysis (PCoA) detected a primary environmental gradient that separated nutrient-rich ponds from those dominated by SAV; a secondary morphometric gradient distinguished natural-substratum ponds, with large surface area and structural complexity, from artificial-substratum ponds with steeper slopes. Natural-substratum ponds had almost twice the a- and c-diversity of artificial-substratum ponds, and diversity significantly increased when SAV was present, particularly in artificial-substratum ponds. Total phosphorus (TP) strongly contributed to explain the patterns in diversity, while SAV was a significant predictor of assemblage composition and diversity. GAMs revealed optima of both a-diversity at intermediate SAV covers and b-diversity at intermediate–high TP concentrations. 4. These findings have important implications for conservation planning. Adaptation of artificialsubstratum ponds by adding natural substratum and smoothing the gradient of pond margins would improve their conservation value. Development of SAV with occasional harvests and certain cautionary measures to control nutrient levels may also improve both the agronomical and environmental function of ponds

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“…where: E -ecological status of water body, k 1,2 , k 2 -correction factors for group II indexes (T, K, W, D having a lesser effect on the condition of a water body), k 4 , k 8 …”

Section: Ecological Status Of Water Bodymentioning

confidence: 99%

“…Their functioning in landscape is most frequently determined by the presence of shallow ground water [8].…”

Section: Introductionmentioning

confidence: 99%

An Ecosystem Valuation Method for Small Water Bodies

Świerk¹,

Szpakowska²

2013

Ecological Chemistry and Engineering S

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Abstract:The paper discusses the development of a valuation method for small water bodies in a landscape park of agricultural character, since for such an area small water bodies are of considerable importance, primarily hydrological and natural. Analyses were conducted in the Dezydery Chlapowski Landscape Park. The object of the study comprised 13 water bodies differing in terms of landscape, morphological parameters (depth, shape, surface area, shoreline development) as well as aquatic and marsh vegetation. Some of these water bodies are typical in-field hollows, some are located in built-up areas, while two are located in a forest complex. The aim of the presented investigations was to develop a valuation method for small water bodies based on inventoried aquatic and marsh vegetation and including modifications of nature analysis methods such as the phytosociological method by Braun-Blanquet and ecological indexes according to Zarzycki. Using environmental variables statistical models were developed, describing dependencies between individual species and analysed variables. Investigations were conducted in the years [2008][2009], in which phytosociological relevés were prepared during the vegetation season. Analyses concerned vegetation of the littoral zone and the limnetic (open water) zone. The ecological status of water bodies was calculated on the basis of data concerning aquatic and marsh vegetation and the measured surface area of a given water body. Results indicate the advisability of having small water bodies covered with legal protection measures. In turn, the water bodies which underwent severe degradation should be remediated using available measures (dredging, creation of biogeochemical barriers).

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Artificial ponds in a Mediterranean region (Andalusia, southern Spain): agricultural and environmental issues

Cited by 43 publications

References 17 publications

Small farm dams: impact on river flows and sustainability in a context of climate change

Small farm dams: impact on river flows and sustainability in a context of climate change

Diversity in Mediterranean farm ponds: trade‐offs and synergies between irrigation modernisation and biodiversity conservation

An Ecosystem Valuation Method for Small Water Bodies

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