scholarly journals Do composition and diversity of bacterial communities and abiotic conditions of spring water reflect characteristics of groundwater ecosystems exposed to different agricultural activities?

2018 ◽  
Vol 8 (4) ◽  
pp. e00681
Author(s):  
Karsten Karczewski ◽  
Patricia Göbel ◽  
Elisabeth I. Meyer
Keyword(s):  
Bacterial Communities ◽  
Spring Water ◽  
Agricultural Activities ◽  
Abiotic Conditions ◽  
Groundwater Ecosystems

scholarly journals Environment drives high phylogenetic turnover among oceanic bacterial communities

2012 ◽  
Vol 8 (4) ◽  
pp. 562-566 ◽  
Author(s):  
Thomas Pommier ◽  
Emmanuel J. P. Douzery ◽  
David Mouillot
Keyword(s):  
Bacterial Communities ◽  
Environmental Gradient ◽  
Regional Scale ◽  
Environmental Filtering ◽  
Species Level ◽  
Geographical Distance ◽  
Abiotic Conditions ◽  
High Connectivity ◽  
Phylogenetic Lineages ◽  
Marine Microbial Communities

Although environmental filtering has been observed to influence the biodiversity patterns of marine bacterial communities, it was restricted to the regional scale and to the species level, leaving the main drivers unknown at large biogeographic scales and higher taxonomic levels. Bacterial communities with different species compositions may nevertheless share phylogenetic lineages, and phylogenetic turnover (PT) among those communities may be surprisingly low along any biogeographic or environmental gradient. Here, we investigated the relative influence of environmental filtering and geographical distance on the PT between marine bacterial communities living more than 8000 km apart in contrasted abiotic conditions. PT was high between communities and was more structured by local environmental factors than by geographical distance, suggesting the predominance of a lineage filtering process. Strong phenotype-environment mismatches observed in the ocean may surpass high connectivity between marine microbial communities.

scholarly journals Broad Dissemination of Plasmids across Groundwater-Fed Rapid Sand Filter Microbiomes

mBio ◽  
2021 ◽  
Author(s):  
Rafael Pinilla-Redondo ◽  
Asmus Kalckar Olesen ◽  
Jakob Russel ◽  
Lisbeth Elvira de Vries ◽  
Lisbeth Damkjær Christensen ◽  
...  
Keyword(s):  
Water Purification ◽  
Bacterial Communities ◽  
Human Consumption ◽  
Clean Water ◽  
Genetic Determinants ◽  
Sand Filter ◽  
Anthropogenic Pollutants ◽  
Groundwater Ecosystems

The supply of clean water for human consumption is being challenged by the appearance of anthropogenic pollutants in groundwater ecosystems. Because many plasmids can transfer horizontally between members of bacterial communities, they comprise promising vectors for the dissemination of pollutant-degrading genetic determinants within water purification plants.

Coral husbandry for ocean futures: leveraging abiotic factors to increase survivorship, growth, and resilience in juvenile Montipora capitata

2021 ◽  
Vol 657 ◽  
pp. 123-133
Author(s):  
JR Hancock ◽  
AR Barrows ◽  
TC Roome ◽  
AS Huffmyer ◽  
SB Matsuda ◽  
...  
Keyword(s):  
Abiotic Factors ◽  
Larval Rearing ◽  
Abiotic Conditions ◽  
Montipora Capitata ◽  
Reef Restoration ◽  
Juvenile Corals ◽  
Bleaching Response ◽  
The Face ◽  
Survival And Growth ◽  
Global And Local

Reef restoration via direct outplanting of sexually propagated juvenile corals is a key strategy in preserving coral reef ecosystem function in the face of global and local stressors (e.g. ocean warming). To advance our capacity to scale and maximize the efficiency of restoration initiatives, we examined how abiotic conditions (i.e. larval rearing temperature, substrate condition, light intensity, and flow rate) interact to enhance post-settlement survival and growth of sexually propagated juvenile Montipora capitata. Larvae were reared at 3 temperatures (high: 28.9°C, ambient: 27.2°C, low: 24.5°C) for 72 h during larval development, and were subsequently settled on aragonite plugs conditioned in seawater (1 or 10 wk) and raised in different light and flow regimes. These juvenile corals underwent a natural bleaching event in Kāne‘ohe Bay, O‘ahu, Hawai‘i (USA), in summer 2019, allowing us to opportunistically measure bleaching response in addition to survivorship and growth. This study demonstrates how leveraging light and flow can increase the survivorship and growth of juvenile M. capitata. In contrast, larval preconditioning and substrate conditioning had little overall effect on survivorship, growth, or bleaching response. Importantly, there was no optimal combination of abiotic conditions that maximized survival and growth in addition to bleaching tolerances. This study highlights the ability to tailor sexual reproduction for specific restoration goals by addressing knowledge gaps and incorporating practices that could improve resilience in propagated stocks.

Drinking water quality and protection of resources

2010 ◽  
Vol 1 (1-2) ◽  
pp. 51-54
Author(s):  
J. Fettig
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Resources ◽  
River Water ◽  
Spring Water ◽  
Public Water Supply ◽  
Legal Requirements ◽  
Reservoir Water ◽  
Water Lake ◽  
Treatment Step

Abstract The structure of public water supply in Germany and the water resources used are briefly described. An overview over the legal requirements for drinking water is given, and the sources for contaminants are outlined. Then the multiple-barrier approach is discussed with respect to the resources groundwater and spring water, lake and reservoir water, and river water. Examples for treatment schemes are given and the principle of subsurface transport of river water as a first treatment step is described.

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