Condicionantes ecológicos de la distribución de anfibios en el Parque Nacional de Doñana

Rodríguez, Carola Gómez

doi:10.14201/gredos.76279

Cited by 5 publications

(6 citation statements)

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“…Increased aridification of south‐western North America likely caused breeding pond durations to be consistently short and hence less variable compared to the pond durations experienced in the Old World and presumably too by their last common ancestor in North America. The duration of ponds used by S. couchii ranges from 7 to 19 days (Morey & Reznick, 2004) or 3 to < 30 days (Newman, 1989), whereas ponds for P. cultripes last on average 152 days and have a range of 30–360 days (Gomez‐Rodriguez, 2009). Spea multiplicata ponds last between 36 and 127 days (Morey & Reznick, 2004).…”

Section: Discussionmentioning

confidence: 99%

Evolutionary reduction of developmental plasticity in desert spadefoot toads

Kulkarni

Gómez-Mestre

Moskalik

et al. 2011

J of Evolutionary Biology

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Organisms vary their rates of growth and development in response to environmental inputs. Such developmental plasticity may be adaptive and positively correlate with environmental heterogeneity. However, the evolution of developmental plasticity among closely related taxa is not well understood. To determine the evolutionary pattern of plasticity, we compared plasticity in time to and size at metamorphosis in response to water desiccation in tadpoles among spadefoot species that differ in breeding pond and larval period durations. Like most tadpoles, spadefoot tadpoles possess the remarkable ability to accelerate development in response to pond drying to avoid desiccation. Here, we hypothesize that desert spadefoot tadpoles have evolved reduced plasticity to avoid desiccation in ephemeral desert pools compared to their nondesert relatives that breed in long‐duration ponds. We recorded time to and size at metamorphosis following experimental manipulation of water levels and found that desert‐adapted species had much less plasticity in larval period and size at metamorphosis than nondesert species, which retain the hypothetical ancestral state of plasticity. Furthermore, we observed a correlation between degree of plasticity and fat body content that may provide mechanistic insights into the evolution of developmental plasticity in amphibians.

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Section: Discussionmentioning

confidence: 99%

Evolutionary reduction of developmental plasticity in desert spadefoot toads

Kulkarni

Gómez-Mestre

Moskalik

et al. 2011

J of Evolutionary Biology

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“…We manually delineated the perimeter of the flooded area of each of the sampled breeding sites using QGIS version 3.6.0 (QGIS Development Team, 2014) and calculated its area using the R package raster , and its shortest distance to the marsh using the function ”st_distance” from package sf (R Core Team, 2019). We gathered geographical information on the temporary pond network and the presence of P. clarkii and G. holbrooki from previous publications (Díaz‐Paniagua et al., 2014; Gómez‐Rodríguez et al., 2011) and data provided by the Doñana Monitoring and Survey Service. Finally, we set a buffer of 760 m radius from each breeding site, which corresponds to the maximum recorded distance for adult individuals of both species across terrestrial landscape (Capellà‐Marzo et al., 2020; Fernández de Larrea et al., 2021).…”

Section: Methodsmentioning

confidence: 99%

“…. holbrooki from previous publications(Díaz-Paniagua et al, 2014;Gómez-Rodríguez et al, 2011) and data provided by the Doñana Monitoring and Survey Service. Finally, we set a buffer of 760 m radius from each breeding site, which corresponds to the maximum recorded distance for adult individuals of both species across terrestrial landscape(Capellà-Marzo et al, 2020;Fernández de Larrea et al, 2021).…”

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confidence: 99%

Pond area and availability safeguard amphibian genetic diversity across Iberia's largest protected wetland

Sánchez‐Montes,

Martínez‐Solano,

Díaz‐Paniagua

et al. 2024

Freshwater Biology

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Wetland ecosystems worldwide are threatened by habitat alteration, climate change and the introduction of invasive species, even within protected areas. Unravelling the reliance of sensitive wetland‐dwelling species, such as amphibians, on habitat characteristics is thus essential to identify conservation targets. Here we assess the distribution of genetic diversity of two strongly aquatic amphibians (Pelophylax perezi and Pleurodeles waltl) in association with habitat features across the most extensive, protected wetland of the Iberian Peninsula: Doñana National Park. Despite inhabiting a protected area free from anthropogenic barriers, the genetic diversity of P. perezi and P. waltl is not homogeneously distributed across the wetland, but instead concentrates in core areas, mainly in the northern zone. Both genetic diversity and connectivity (as opposed to genetic differentiation) showed significant positive associations with the area of the breeding sites and the flooded area surrounding the breeding sites within the dispersal potential of either species, that is nearby pond availability. Large water bodies connected to abundant temporary ponds are key for the maintenance of amphibian genetic diversity. Nevertheless, the core populations of our target species, which show markedly aquatic habits, are concentrated in areas colonised by invasive species, which could compromise their long‐term viability. Our results highlight that maintaining widely connected arrays of ponds of different hydroperiods, including large breeding sites free from invasive predators and competitors, is paramount for amphibian conservation in Mediterranean wetlands.

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“…In addition to the seasonally flooded marshes, the park contains a large pond network in the aeolian sandy area. More than 3000 temporary ponds may be present during wet periods (Gómez‐Rodríguez, Díaz‐Paniagua & Bustamante, 2011); in contrast, permanent natural ponds are scarce (i.e., only one in the last decade). Ponds usually fill in the autumn or winter, after heavy rains, and then mainly dry out in the summer.…”

Section: Methodsmentioning

confidence: 99%

Pond basin colonization by terrestrial vegetation indicates wetland deterioration

Díaz‐Paniagua

Ramírez-Soto

Aragonés

2023

Aquatic Conservation

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Efforts to conserve the pond network in the Doñana National Park are being threatened by groundwater overexploitation. The dramatic expansion of farming and tourism in nearby areas has caused a severe lowering of the water table, reducing pond hydroperiod length or even instigating pond desiccation. It is important to document the link between groundwater abstraction and pond deterioration with a view to decreasing human pressures on the park and preserving the pond network's singular biodiversity. Here, the gradual deterioration of one of the network's main ponds is described in detail by characterizing vegetation patterns within the pond's basin using orthophotos taken between 1956 and 2019. In the earliest images, the pond contained a wide central area of bare soil during its dry phase. This area was surrounded by reeds and had a line of Tamarix canariensis trees along its southern edge. Starting in 2000, the orthophotos showed the pond's gradual colonization by terrestrial vegetation. In tandem, pond hydroperiod decreased, as did the length of time the pond retained certain depths of water. In recent years, Tamarix trees finally fully invaded the pond's central area, which is surrounded by reeds and has scattered terrestrial bushes and pines. This invasion resulted from the pond's sparse inundation over recent decades, being the cover of trees related to the depth of groundwater, and is a clear sign of pond deterioration. More broadly, colonization by terrestrial vegetation has been observed in approximately 60% of the network's ponds. Colonization of temporary pond basins by terrestrial vegetation can be used as an indicator of deterioration and highlights the need for active restoration and management.

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Condicionantes ecológicos de la distribución de anfibios en el Parque Nacional de Doñana

Cited by 5 publications

References 0 publications

Evolutionary reduction of developmental plasticity in desert spadefoot toads

Evolutionary reduction of developmental plasticity in desert spadefoot toads

Pond area and availability safeguard amphibian genetic diversity across Iberia's largest protected wetland

Pond basin colonization by terrestrial vegetation indicates wetland deterioration

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