The effect of the sampling scale on zooplankton community assessment and its implications for the conservation of temporary ponds in south‐west Spain

Fahd, Khalid; Florencio, Margarita; Keller, Claudia; Serrano, Laura

doi:10.1002/aqc.781

Cited by 21 publications

(18 citation statements)

References 48 publications

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“…3). Fahd et al (2007) reported that increasing within-year sampling yielded higher species diversity than sampling additional systems within the same region, a result consistent with our observations. A key compositional difference between 1976 and 1997 was a shift away from dominance by species including Keratella cochlearis, Collotheca mutabilis, and Synchaeta kitina and increased dominance by K. quadrata, Trichocerca similis, Conochilus unicornis, Pompholyx sulcata, and Polyarthra spp.…”

Section: Rotifer Community Analysessupporting

confidence: 92%

Consistent, long-term change in rotifer community composition across four Polish lakes

et al. 2008

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Few studies exist documenting changes in rotifer communities over long time intervals. Here, we explore seasonal and long-term variation in rotifer communities in four Polish lakes sampled in 1976 and again in 1997. Rarefied, asymptotic species richness did not differ significantly across study years, although values in 1997 tended to be higher. Simpson's and Shannon-Wiener diversity measures provided inconsistent temporal results, with only the former indicating significantly higher richness in 1997. Sorensen's coefficient of community similarity was as high among lakes in 1976 (0.81) and in 1997 (0.76) as within lakes across the 21-year span (0.77). Nonlinear redundancy analysis of species' abundances revealed large, consistent seasonal changes across lakes, smaller consistent shifts between sampling periods, and small differences between lakes. Collectively, these metrics indicate that species composition was relatively stable among lakes within years and within lakes between years, while species' abundance patterns were far more variable and most affected by season.

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Section: Rotifer Community Analysessupporting

confidence: 92%

Consistent, long-term change in rotifer community composition across four Polish lakes

et al. 2008

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“…Arnott et al, 1998;Fahd et al, 2007). Ideally samples should be taken more than one month a year, but comparison at several points in the annual cycle is difficult in temporary ponds with variable hydroperiods.…”

Section: Discussionmentioning

confidence: 99%

Recovery of zooplankton diversity in a restored Mediterranean temporary marsh in Doñana National Park (SW Spain)

et al. 2010

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Over 30 years after drainage for agriculture, a 2700 ha temporary marshland was recently restored in Doñana National Park. We describe the recovery of zooplankton communities (copepods, cladocerans and rotifers) in 47 new temporary ponds excavated as part of the restoration project during the first two hydroperiods (April 2006 and, and compare them to those of eight reference sites in the surrounding marshland. Major changes in the species composition and abundance occurred in new ponds between years. While rotifers and cyclopoid copepods dominated in terms of number of individuals in 2006, calanoid copepods and cladocerans were the most abundant groups in 2007. Rotifer species richness was significantly lower in 2007, but there was an increase in Simpson and b-diversity in 2007 owing largely to a dramatic decline in the abundance of Hexarthra cf. fennica (rare in reference sites) from 93% of all rotifer individuals in new ponds in 2006 to only 32% in 2007. In contrast, species richness of copepods and cladocerans was significantly higher in new ponds in 2007, but there were no changes in Simpson diversity. b-Diversity of cladocerans was also significantly higher in 2007. In 2006, the species richness of cladocera and copepods was significantly lower in new ponds than in reference sites, but by 2007 there were no differences in richness or Simpson diversity. Overall, 7 copepod, 13 cladoceran and 26 rotifer taxa were recorded in new ponds, including 80% of taxa recorded in reference sites. These results indicate that zooplankton communities can be rapidly restored in Mediterranean temporary wetlands, at least when large source populations in the surrounding area reduce dispersal limitation. They also illustrate the importance of comparing different metrics of richness and diversity in studies of zooplankton restoration.

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“…Macroinvertebrates which are well adapted to temporary ponds adopt different physiological and behavioral mechanisms to survive desiccation (Williams 2006), with dispersal into permanent ponds being the most common strategy followed by dormant life-history stages such as resistant eggs, larvae and adults burying into the mud (Wiggins et al 1980;Higgins and Merrit 1999;Bilton et al 2001). Dispersal also is favored by physical links between sites which can occur following heavy rainfall (Fahd et al 2007). As high connectivity is one of the main drivers of nestedness in biological communities (Boecklen 1997;Cook and Quinn 1995;Wright et al 1998;Higgins et al 2006) and dispersal has been suggested as being important in driving nested patterns (Patterson 1990;Atmar and Patterson 1993;Loo et al 2002;Hausdorf and Hennig 2003), we expected, and found, good dispersers to be more highly nested than poor and non-dispersing taxa (Cook and Quinn 1995).…”

Section: Monthly Variation In Species Richness and Nestednessmentioning

confidence: 97%

Spatio-temporal nested patterns in macroinvertebrate assemblages across a pond network with a wide hydroperiod range

et al. 2010

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Nestedness has been widely used to measure the structure of biological communities and occurs when species-poor sites contain subsets of species-rich ones. Here, we examine nested patterns across the macroinvertebrate assemblages of 91 ponds in Doñana National Park, Spain, and explore temporal variation of nestedness and species richness in 19 temporary ponds over 2 years with differing rainfall. Macroinvertebrate assemblages were significantly nested; both pond spatial arrangement and environmental variation being important in driving nested patterns. Despite the nested structure observed, a number of taxa and ponds deviate from this pattern (termed idiosyncratic), by occurring more frequently than expected in species-poor sites, or having assemblages dominated by species largely absent from species-rich sites. Aquatic adults of winged insects, capable of dispersal, were more highly nested than non-dispersing taxa and life-history stages. Idiosyncratic taxa were found in ponds spanning a wide range of hydroperiods, although nestedness was higher in more permanent waterbodies. Monthly sampling demonstrated a gradual increase of species richness and nestedness from pond filling to April-May, when the most temporary ponds started to dry. Although the degree of nestedness of individual pond assemblages varied from month to month, the overall degree of nestedness in the two study years was practically identical despite marked differences in hydroperiod. Our results suggest that differential colonization and environmental variation are key processes driving the nested structure of Doñana ponds, that macroinvertebrate assemblages change in a predictable manner each year in response to cycles of pond wetting and drying, and that connectivity and environmental variability maintain biodiversity in pond networks.

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The effect of the sampling scale on zooplankton community assessment and its implications for the conservation of temporary ponds in south‐west Spain

Cited by 21 publications

References 48 publications

Consistent, long-term change in rotifer community composition across four Polish lakes

Consistent, long-term change in rotifer community composition across four Polish lakes

Recovery of zooplankton diversity in a restored Mediterranean temporary marsh in Doñana National Park (SW Spain)

Spatio-temporal nested patterns in macroinvertebrate assemblages across a pond network with a wide hydroperiod range

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