How do hydrological and climatic conditions influence the diversity and behavioural trends of water birds in small Mediterranean reservoirs? A community-level modelling approach

Carvalho, Diogo; Horta, Pedro; Raposeira, Helena; Santos, Mário; Antônio, Luís; Cabral, João Alexandre

doi:10.1016/j.ecolmodel.2013.02.012

Cited by 16 publications

(12 citation statements)

References 36 publications

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“…Indeed, identifying GDEs is an increasingly demanded step in Europe (Boulton, ; Kløve et al, ) for the protection and management of GDEs under the WFD (Articles 1 and 6) and a first step for the assessment of the hydrological ecosystem services (Carvalho‐Santos et al, ) provided by GDEs. This identification becomes a challenge when groundwater is not observed on the surface at any time of the year (U.K. Technical Advisory Group, ), and our approach can assist with this purpose.…”

Section: Discussionmentioning

confidence: 99%

“…Unfortunately, the poor situation in SE Spain could become the common situation in Europe and North Africa, where many Z. lotus populations occur in coastal areas (Figure 1; Mücher, Hennekens, Bunce, Schaminée, & Schaepman, 2009) and are threatened by urban and agricultural sprawl, climate warming, aridification, and seawater intrusion (Ibáñez, Pérez-Gómez, Oyonarte, & Brevik, 2015). The compulsory registration and protection (Articles 1 and 6 and Annex 4.5 of the WFD) of GDEs and the sexennial report on the conservation status of habitats (Article 17 of Habitats Directive) should urgently include an assessment of the dependence of Habitat 5220* on groundwater.Indeed, identifying GDEs is an increasingly demanded step in Europe(Boulton, 2005;Kløve et al, 2011) for the protection and management of GDEs under the WFD (Articles 1 and 6) and a first step for the assessment of the hydrological ecosystem services(Carvalho-Santos et al, 2013) provided by GDEs. This identification becomes a challenge when groundwater is not observed on the surface at any time of the year (U.K. Technical Advisory Group, 2012), and our approach can assist with this purpose.…”

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confidence: 99%

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Remote‐sensing‐derived fractures and shrub patterns to identify groundwater dependence

et al. 2018

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The identification and location of groundwater‐dependent ecosystems are the first steps in protecting and managing them. Such identifications are challenging where the surface expressions of groundwater are not obvious. This work presents a remote‐sensing‐based approach to infer the groundwater dependence of semiarid shrubs from their association with fractures that facilitate root access to groundwater. As a case study, we used the Ziziphus lotus matorral in south‐east Spain, a priority conservation habitat in the European Union (Habitat 5220*, Directive 92/43/EEC) that is highly threatened by agricultural and urban sprawl. The approach combines object‐based image analysis of high‐resolution orthoimages to map Ziziphus individuals, geomorphometric analysis of a lidar‐derived terrain model to map bedrock fractures, and spatial statistics to assess the association between Ziziphus and fractures. Electrical resistivity tomography was used to validate the identified fractures, and the seasonal dynamics of the normalized difference vegetation index was used to prove that Z. lotus maintained higher greenness during the summer drought and was less coupled with precipitation than the nearby nonphreatophytic vegetation. A majority (61%) of the Ziziphus patches, particularly the smallest ones, occurred within 50 m of faults. This spatial association between phreatophyte shrubs and fractures contributes to the identification of groundwater‐dependent ecosystems. This approach offers several advantages because it is simple, low cost, and non‐destructive. In addition, the differentiation of shrubs into size classes provided insights into the long‐term environmental controls underlying the establishment of Ziziphus individuals. The evidence of groundwater dependence by Z. lotus in Habitat 5220* indicates the need for its urgent protection under the Water Framework Directive.

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

Remote‐sensing‐derived fractures and shrub patterns to identify groundwater dependence

et al. 2018

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“…The dense vegetation and the rich production of submerged aquatic macrophytes create ideal nesting conditions for these birds: all of them nest amidst tall vegetation, which covers more than 30% of the study area, providing shelter from aerial predation (Belhadj, Chabi, Chalabi, yves et al 2007;Nedjah et al 2010;Rouibi et al 2013;Samraoui, Alfarhan, and Samraoui 2013).The composition of waterbird community (total abundance and species richness) in autumn-winter months showed less similarity with that in other months, which is, perhaps, due to higher mobility of birds during this period in response to environmental stressors (e.g. weather; changes in water level and in food resources) and others factors such as bird phenology and differences in the timing of arrival and departure of different species (Kershaw and Cranswick 2003;Carvalho et al 2013). …”

Section: Diversity Patternsmentioning

confidence: 97%

Diversity patterns and seasonal variation of the waterbird community in Mediterranean wetlands of Northeastern Algeria

Elafri

Halassi

Houhamdi

2016

Zoology and Ecology

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During two annual cycles (from September 2012 to August 2014), we analysed structural patterns (provided and compared data on diversity metrics) of bird assemblages in coastal wetlands of Northeastern Algeria. Annual and seasonal differences in relative species abundance were analysed from the viewpoint of diversity/dominance. Bird assemblages vary only in the number of species (35 recorded species during the wintering season against 23 during the breeding season). Values of the relative abundance in both seasons were similar, curves in the diversity/dominance diagram were analogous (not significantly different; both p > 0.05). Indeed, the seasonal structure of waterbird communities indicates highly dominated assemblages manifesting themselves in reduced species diversity and increased dominance of certain species. Simpson's index was never recorded below 0.50, thus indicating evidently lower evenness. The Eurasian Coot Fulica atra and the Little Grebe Tachybaptus ruficollis were highly dominant species together accounting for more than 50% of waterbird communities. This atypical organisation (highly dominated structure) is mainly due to anthropogenic or natural stresses. The marked decline in bird species diversity recorded during the study period (approximately two years long) may be of concern to wetland managers as causes and consequences of the increased number of widespread species and factors behind the increasing species diversity are likely to be felt in both seasons.

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“…The results indicate that hydrological conditions affect the structures and features of wetland animals, plants, and microorganisms, and play an important role in wetland restoration and management [8][9][10][11]. Hydrological restoration can be estimated by experience and calculated by models [12][13][14]. Combining the theories and methods of ecology and hydrology, ecological water demand has been widely used in wetland hydrological restoration [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Hydrological Restoration and Water Resource Management of Siberian Crane (Grus leucogeranus) Stopover Wetlands

Jiang

Luo

et al. 2018

Water

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Habitat loss is a key factor affecting Siberian crane stopovers. The accurate calculation of water supply and effective water resource management schemes plays an important role in stopover habitat restoration for the Siberian crane. In this paper, the ecological water demand was calculated and corrected by developing a three-dimensional model. The results indicated that the calculated minimum and optimum ecological water demand values for the Siberian crane were 2.47 × 108 m3~3.66 × 108 m3 and 4.96 × 108 m3~10.36 × 108 m3, respectively, in the study area. After correction with the three-dimensional model, the minimum and optimum ecological water demand values were 3.75 × 108 m3 and 5.21 × 108 m3, respectively. A water resource management scheme was established to restore Siberian crane habitat. Continuous, area-specific and simulated flood water supply options based on water diversions were used to supply water. The autumn is the best season for area-specific and simulating flood water supply. These results can serve as a reference for protecting other waterbirds and restoring wetlands in semi-arid areas.

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How do hydrological and climatic conditions influence the diversity and behavioural trends of water birds in small Mediterranean reservoirs? A community-level modelling approach

Cited by 16 publications

References 36 publications

Remote‐sensing‐derived fractures and shrub patterns to identify groundwater dependence

Remote‐sensing‐derived fractures and shrub patterns to identify groundwater dependence

Diversity patterns and seasonal variation of the waterbird community in Mediterranean wetlands of Northeastern Algeria

Hydrological Restoration and Water Resource Management of Siberian Crane (Grus leucogeranus) Stopover Wetlands

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