Abstract Relationships between traits of organisms and the structure their metacommunities have so far mainly been explored with meta‐analyses. We compared a wide variety aquatic organism groups (12 groups, ranging from bacteria to fish) in same set 99 ponds minimise biases inherent In category passive dispersers, large‐bodied showed stronger spatial patterning than small‐bodied suggesting an increasing impact dispersal limitation body size. Metacommunities ability fly (i.e. insect groups)...

There is a vivid debate on the relative importance of local and regional factors in shaping microbial communities, whether organisms show biogeographic signature their distribution. Taking metacommunity approach, spatial can become important either through dispersal limitation (compare large scales) or mass effects (in case strongly connected systems). We here analyze two datasets bacterial communities [characterized by community fingerprinting denaturing gradient gel electrophoresis (DGGE)]...

This study aimed at unraveling the structure underlying taxon-richness matrix of shallow lakes. We assessed taxon richness a large variety food-web components different trophic levels (bacteria, ciliates, phytoplankton, zooplankton, fish, macro-invertebrates, and water plants) in 98 lakes from three European geographic regions: Denmark (DK), Belgium/The Netherlands (BNL), southern Spain (SP). Lakes were selected along four mutually independent gradients total phosphorus (TP), vegetation...

The phylogenetic composition of bacterioplankton communities in the water column four shallow eutrophic lakes was analyzed by partially sequencing cloned 16S rRNA genes and PCR-DGGE analysis. differed nutrient load food web structure: two were a clearwater state had dense stands submerged macrophytes, while others turbid characterized occurrence phytoplankton blooms. One one lake very high levels (total phosphorus > 100 μg/l), other less rich < 100μg/l). Cluster analysis, multidimensional...

Recent data revealed that metazoans such as mites and springtails have persisted in Antarctica throughout several glacial–interglacial cycles, which contradicts the existing paradigm terrestrial life was wiped out by successive glacial events current inhabitants are recent colonizers. We used molecular phylogenetic techniques to study Antarctic microchlorophyte strains isolated from lacustrine habitats maritime continental Antarctica. The 14 distinct chlorophycean trebouxiophycean lineages...

Background Free-living microorganisms have long been assumed to ubiquitous distributions with little biogeographic signature because they typically exhibit high dispersal potential and large population sizes. However, molecular data provide contrasting results it is far from clear what extent limitation determines geographic structuring of microbial populations. We aimed determine biogeographical patterns the bloom-forming freshwater cyanobacterium Microcystis aeruginosa. Being widely...

Research has shown that how well people can differentiate between different emotional states is an essential requirement for adaptive emotion regulation. People with low levels of differentiation tend to be more vulnerable develop disorders. Although we know quite a lot about the correlates differentiation, research on factors or interventions which could improve skills scarce. Here, hypothesize, and study empirically, whether mindfulness-based intervention (MBI) may impact negative positive...

ABSTRACT Bacterial community composition was monitored in four shallow eutrophic lakes during one year using denaturing gradient gel electrophoresis (DGGE) of PCR-amplified prokaryotic rDNA genes. Of the investigated, two were clearwater type and had dense stands submerged macrophytes while others turbid characterized by occurrence phytoplankton blooms. One lake high nutrient levels (total phosphorus, &gt;100 μg liter −1 ) other relatively low &lt;100 ). For each lake, seasonal changes...

We characterized the bacterioplankton community and its seasonal dynamics in two neighbouring hypertrophic lakes by denaturing gradient gel electrophoresis (DGGE) analysis of short (193 bp) 16S ribosomal DNA polymerase chain reaction (PCR) products obtained with primers specific for domain Bacteria. Lake Blankaart is turbid has a high phytoplankton biomass episodic cyanobacterial blooms, whereas biomanipulated Visvijver clearwater conditions establishment dense charophyte vegetation. Both...

The influence of bacterivorous nematodes (Diplolaimelloides meyli, Diplolaimelloides oschei, Diplolaimella dievengatensis, Panagrolaimus paetzoldi) on the development a bacterial community growing decaying cordgrass detritus was studied in laboratory microcosm experiments. Cordgrass leaves were incubated sediment surface with natural mixture containing bacteria from sediment, and habitat water. four nematode species applied separately to microcosms; controls remained without nematodes....

Ecology Letters (2012) Abstract Dispersal is a major organising force in metacommunities, which may facilitate compositional responses of local communities to environmental change and affect ecosystem function. Organism groups differ widely their dispersal abilities are therefore expected have different adaptive abilities. In mesocosms, we studied the simultaneous response three plankton (zoo‐, phyto‐ bacterioplankton) primary productivity gradient evaluated how this was mediated by...

Summary Metacommunity studies on lake bacterioplankton indicate the importance of environmental factors in structuring communities. Yet most these cover relatively small spatial scales. We assessed relative and shaping communities across a &gt; 6000 km latitudinal range, studying 48 shallow lowland lakes tropical, tropical i (isothermal subzone tropics) tundra climate regions S outh A merica using denaturing gradient gel electrophoresis. Bacterioplankton community composition ( BCC )...

ABSTRACT Vertical and latitudinal differences in bacterial community composition (BCC) Lake Tanganyika were studied during the dry season of 2002 by means denaturing gradient gel electrophoresis analysis PCR-amplified 16S RNA fragments. Dominant bands sequenced identified as members Cyanobacteria , Actinobacteria Nitrospirae green nonsulfur bacteria, Firmicutes divisions Gamma - Deltaproteobacteria subdivisions. The BCC lake displayed both vertical variation. changes related to thermal water...

ABSTRACT The identification of phylogenetic clusters bacteria that are common in freshwater has provided a basis for probe design to target important groups. We present set 16S ribosomal RNA gene-based oligonucleotide probes specific 15 these clusters. were applied reverse line blot hybridization, simple method enables the rapid screening PCR products from many samples against an array probes. optimized assay was made stringent discriminate at approximately single-mismatch level. This 10...

Summary Denaturing gradient gel electrophoresis (DGGE) of amplified nifH gene fragments was used to study the diazotrophic community soil samples under Acacia tortilis ssp. raddiana (legume tree) and Balanites aegyptiaca (non‐legume tree), two dominant plant species growing naturally in dryland part Senegal. Samples were taken along transects from stem up 10 m distance it, at depths 0–0.25 0.25–0.50 m. Sampling done dry season (25 June 1999) rainy (28 August 1999). The structure diversity...

Adolescent and young adult cancer (AYAC) survivors show an elevated risk of distress. Targeted psychosocial interventions for this distinct population are needed. This study examined the potential efficacy a mindfulness-based intervention (MBI) to alleviate emotional distress improve quality life (QoL) in AYAC survivors.Participants were 16 survivors, aged 14-24, who had completed acute medical treatment. A two-baseline (8 1 week before intervention), post- (1 after intervention) 3 months...

Background Many breast cancer survivors suffer from cognitive complaints after treatment, affecting their quality of life. The objective this pilot study was to investigate the effect a blended‐care mindfulness‐based intervention (MBI) on chemotherapy‐related impairment and functional brain changes. Furthermore, correlations between changes in functioning self‐reported behavioral factors were investigated. Methods Breast (n = 33) who reported randomly allocated mindfulness condition 18) or...

Body awareness (BA) has long been proposed as a working mechanism of mindfulness-based interventions (MBIs), yet research on the mediating role BA is scarce. Hence, present study assesses impact an 8-week MBI self-reported and indirect measures BA, investigates potential in relationship between symptomatology, evaluates important psychological processes (i.e., experiential avoidance, rumination, self-efficacy, self-discrepancy), explores whether these variables act alongside symptomatology....

This cluster randomised controlled trial examined the effectiveness of universal school-based mindfulness training (MT; vs. passive control) to lower anhedonia and emotional distress among mid-adolescents (15–18 years). It further three potential mechanisms: dampening positive emotions, non-acceptance/suppression negative perceived social pressure not experience/express emotions. Adolescents (n control = 136, n intervention 95) participated in assessment points (before, after two/three...

In order to evaluate latitudinal differences in the relationship of phytoplankton biomass and diversity with environmental conditions shallow lakes, we sampled 98 lakes from three European regions: Denmark (DK), Belgium/The Netherlands (BNL) southern Spain (SP). Phytoplankton increased total phosphorus (TP) concentrations decreased submerged macrophyte cover across regions. Generic richness was significantly negatively related variables. Zooplankton:phytoplankton ratios were positively...

Abstract Parental bonding is defined as the affectionate tie a parent feels towards their infant. These feelings generally arise prenatally and increase in intensity over course of pregnancy, both mothers fathers. Bonding fundamental for positive parenting behaviors optimal child development. Few quantitative studies systematically examined what factors contribute to fathers during pregnancy. The aim present study was examine whether variety risk (symptoms depression anxiety, stress,...

Background. Oxytocin administration is increasingly considered a novel therapeutic support option for alleviating psychological distress in stress-related neuropsychiatric conditions, including anxiety disorders and depression.However, oxytocin as stand-alone treatment may fail to consistently target the relevant central autonomic circuitry without complementary supportive context that similarly stimulates stress regulatory states behaviours.Recent findings suggest neurophysiological...

AME Aquatic Microbial Ecology Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 48:241-254 (2007) - doi:10.3354/ame048241 Effect of phytoplankton bloom deposition on benthic bacterial communities in two contrasting sediments southern North Sea M. A. Franco1,2,*, I. De Mesel1, Demba Diallo3, K. Van der Gucht3, D. Gansbeke1, P. van Rijswijk4, J. Costa2, Vincx1, Vanaverbeke1 1Marine Biology Section,...