Seasonal dynamics in water quality and vegetation cover in temporary pools with variable hydroperiods in Kiskunság (Hungary)

Boven, Liesbet; Stoks, Robby; Forró, Lászlø; Brendonck, Luc

doi:10.1672/06-174.1

Cited by 29 publications

(22 citation statements)

References 21 publications

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“…Salinity differences are well known for their direct impact on physiology affecting species composition of zooplankton communities (Boronat et al 2001, Frisch et al 2006, Waterkeyn et al 2008. Depth itself may be important in permanent waters (as a refugium against UV or visual predators), but in temporary waters it is most likely a proxy for hydroperiod, as these two variables are strongly related (Boven et al 2008).…”

Section: Environmental Factors Structuring Genetic Variation In Moinamentioning

confidence: 99%

Salinity and depth as structuring factors of cryptic divergence in Moina brachiata (Crustacea: Cladocera)

Nédli¹,

Meester²,

Major³

et al. 2014

fal

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Microcrustacean taxa in temporary waters are important contributors to aquatic biodiversity on the landscape scale even though much of the diversity at the molecular level is still undiscovered. Cladoceran species other than Daphnia are not frequently targeted in molecular investigations. We used nuclear allozyme polymorphisms as well as DNA sequence variation in mitochondrial 16 S and COI gene regions to reveal patterns of genetic differentiation among populations of a cladoceran species -Moina brachiata -that typically inhabits temporary aquatic habitats. Samples originated from 20 temporary to semi-permanent waterbodies in the Hungarian Great Plain of the Pannonian biogeographic region. We observed strong genetic differentiation in the phylogenetic analyses of the concatenated 16 S and COI genes, based on which M. brachiata was found to represent a complex of four cryptic lineages (A, B, C and D) with, however, one of these (lineage D) detected based on only one individual. Regarding the nuclear markers, diagnostic alleles of the PGM and MDH enzyme loci in complete linkage disequilibrium were observed separating the 'B' lineage from the rest. In addition, indirect evidence was provided by the AAT locus, where the AAT1 allele was found to be potentially diagnostic for lineage 'C'. The three phylogenetically defined lineages ('A', 'B', 'C') could be separated from each other along the first canonical axis of a multivariate analysis of occurrence, and this first axis was strongly correlated with depth and salinity of the ponds. There is a strong association between habitat depth and the occurrence of the 'B' lineage. Our results indicate that habitat depth and associated ecological characteristics driven by differences in hydroperiod likely are responsible for the present distribution of the lineages.

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Section: Environmental Factors Structuring Genetic Variation In Moinamentioning

confidence: 99%

Salinity and depth as structuring factors of cryptic divergence in Moina brachiata (Crustacea: Cladocera)

Nédli¹,

Meester²,

Major³

et al. 2014

fal

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“…This could suggest a cost of early hatching. Perhaps, feeding conditions immediately after inundation were not optimal due to lower densities of live food sources such as bacteria and algae (Boven et al 2008). It must also be noted that those populations that hatched early also continued to hatch over a longer time period (5-6 days instead of 3-4 days) and that the presence of late hatching individuals may partly explain slower overall maturation rate of the population.…”

Section: Hatching and Life History Variationmentioning

confidence: 99%

Hatching phenology, life history and egg bank size of fairy shrimp Branchipodopsis spp. (Branchiopoda, Crustacea) in relation to the ephemerality of their rock pool habitat

2010

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In temporary aquatic habitats, permanence and the severe disturbance associated with desiccation are strong selective agents expected to lead to differentiation in life history strategies in populations experiencing different disturbance regimes. Besides optimal timing of hatching of dormant life stages, maturation and reproduction, pool inhabitants also benefit from the acquisition of reliable cues for the quality of the ambient environment. We investigated whether hatching patterns, life history characteristics and egg bank size of Branchipodopsis fairy shrimp (Branchiopoda, Anostraca) inhabiting a cluster of temporary rock pools in South Africa reflect variation in habitat stability and hatching cues. Long-term hydrological variation was used to select pools along a gradient of habitat stability. Initial conductivity was a good indicator for the length of inundations. No hatching occurred under elevated conductivities, which may present a mechanism to avoid abortive hatching. Egg bank size was unaffected by habitat size or habitat stability but instead was related to cover by a protective sheet of dry aquatic vegetation, which presumably counteracts egg bank erosion by wind when pools are dry. Life history but not hatching phenology reflected some aspects of habitat stability. Fairy shrimp populations in ephemeral pools started reproduction earlier than populations in more stable habitats. Additional common garden or transplant experiments, however, will be required to assess the relative importance of environmental and genetic components in explaining the observed variation and acquire more insight into the trade-offs that lie at the base of the evolution of life history strategies along the pond permanence gradient.

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“…Plant rhizosphere stimulates microbial communities to grow. Therefore, any modification of plant diversity and habitat is likely to lead to changes within the microbial community and subsequently to influent contaminant removal efficiency (Boven et al 2008). In addition, the diversity of vegetation is another important factor with respect to contaminant uptake capacity.…”

Section: Introductionmentioning

confidence: 99%

Impact of Hydraulic Loading Rate and Season on Water Contaminant Reductions Within Integrated Constructed Wetlands

et al. 2011

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The impact of hydraulic loading rate (HLR) and seasonal temperature on contaminant removal efficiencies within an integrated constructed wetland (ICW) system of 3.25 ha was assessed. The ICW system was designed to treat domestic wastewater from Glaslough (Ireland). The current loading rate is 800 population equivalents. The system has shown good removal performances (2008 to 2010). Mean concentration removal efficiencies were high: 92% for chemical oxygen demand (COD), 98% for the 5 days at 20°CN-allylthiourea biochemical oxygen demand (BOD), 94% for total suspended solids (TSS), 97% for ammonia-nitrogen (NH 3 -N), 90% for nitrate-nitrogen (NO 3 -N), 96% for total nitrogen (TN), and 96% for molybdate reactive phosphate (MRP). The mean mass removal efficiencies were 92% for COD, 98% for BOD, 96% for TSS, 92% for NH 3 -N, 83% for NO 3 -N, 90% for TN, and 91% for MRP. Loading rate fluctuations were mainly due to high variation in rainfall (0.4 to 400 m 3 day -1 ) and in evapotranspiration rate (0 to 262 m 3 day -1 ). The influence on the removal efficiencies of the hydraulic loading rate (−0.7 to 15.3 cm day -1 ), which was based on overall water balance, was negligible. This implies that the large footprint of the system provides a high hydraulic retention time (92 days).

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Seasonal dynamics in water quality and vegetation cover in temporary pools with variable hydroperiods in Kiskunság (Hungary)

Cited by 29 publications

References 21 publications

Salinity and depth as structuring factors of cryptic divergence in Moina brachiata (Crustacea: Cladocera)

Salinity and depth as structuring factors of cryptic divergence in Moina brachiata (Crustacea: Cladocera)

Hatching phenology, life history and egg bank size of fairy shrimp Branchipodopsis spp. (Branchiopoda, Crustacea) in relation to the ephemerality of their rock pool habitat

Impact of Hydraulic Loading Rate and Season on Water Contaminant Reductions Within Integrated Constructed Wetlands

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