keyword
MENU ▼
Read by QxMD icon Read
search

ecosystem

keyword
https://www.readbyqxmd.com/read/28445827/scale-effect-on-spatial-patterns-of-ecosystem-services-and-associations-among-them-in-semi-arid-area-a-case-study-in-ningxia-hui-autonomous-region-china
#1
Shuna Xu, Yanfang Liu, Xia Wang, Guangxia Zhang
Identifying scale effect on spatial patterns of ecosystem services and associations among them has been recognized as critical to the sustainable management of ecosystem services. We proposed a method to conveniently integrate ecosystem services of small scale into different larger scales. Taking Ningxia Hui Autonomous Region in west China as an example, we analyzed the change regularity of spatial patterns of 7 ecosystem services under 22 different scales. Further, the tradeoffs and synergies among ecosystem services across all scales were compared...
April 23, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28445588/the-relative-importance-of-pollinator-abundance-and-species-richness-for-the-temporal-variance-of-pollination-services
#2
Mark A Genung, Jeremy Fox, Neal M Williams, Claire Kremen, John Ascher, Jason Gibbs, Rachael Winfree
The relationship between biodiversity and the stability of ecosystem function is a fundamental question in community ecology, and hundreds of experiments have shown a positive relationship between species richness and the stability of ecosystem function. However, these experiments have rarely accounted for common ecological patterns, most notably skewed species abundance distributions and non-random extinction risks, making it difficult to know whether experimental results can be scaled up to larger, less manipulated systems...
April 26, 2017: Ecology
https://www.readbyqxmd.com/read/28445554/correction-integrating-the-effects-of-latitude-and-altitude-on-the-spatial-differentiation-of-plant-community-diversity-in-a-mountainous-ecosystem-in-china
#3
(no author information available yet)
[This corrects the article DOI: 10.1371/journal.pone.0174231.].
2017: PloS One
https://www.readbyqxmd.com/read/28445483/community-barcoding-reveals-little-effect-of-ocean-acidification-on-the-composition-of-coastal-plankton-communities-evidence-from-a-long-term-mesocosm-study-in-the-gullmar-fjord-skagerrak
#4
Julia A F Langer, Rahul Sharma, Susanne I Schmidt, Sebastian Bahrdt, Henriette G Horn, María Algueró-Muñiz, Bora Nam, Eric P Achterberg, Ulf Riebesell, Maarten Boersma, Marco Thines, Klaus Schwenk
The acidification of the oceans could potentially alter marine plankton communities with consequences for ecosystem functioning. While several studies have investigated effects of ocean acidification on communities using traditional methods, few have used genetic analyses. Here, we use community barcoding to assess the impact of ocean acidification on the composition of a coastal plankton community in a large scale, in situ, long-term mesocosm experiment. High-throughput sequencing resulted in the identification of a wide range of planktonic taxa (Alveolata, Cryptophyta, Haptophyceae, Fungi, Metazoa, Hydrozoa, Rhizaria, Straminipila, Chlorophyta)...
2017: PloS One
https://www.readbyqxmd.com/read/28445091/comparative-molecular-and-morphological-variation-analysis-of-siderastrea-anthozoa-scleractinia-reveals-the-presence-of-siderastrea-stellata-in-the-gulf-of-mexico
#5
Norberto A Colín García, Jorge E Campos, José L Tello Musi, Zac H Forsman, Jorge L Montero Muñoz, Alejandro Monsalvo Reyes, Jesús E Arias González
The genus Siderastrea exhibits high levels of morphological variability. Some of its species share similar morphological characteristics with congeners, making their identification difficult. Siderastrea stellata has been reported as an intermediary of S. siderea and S. radians in the Brazilian reef ecosystem. In an earlier study conducted in Mexico, we detected Siderastrea colonies with morphological features that were not consistent with some siderastreid species previously reported in the Gulf of Mexico...
February 2017: Biological Bulletin
https://www.readbyqxmd.com/read/28444961/biodiversity-and-ecosystem-function-making-sense-of-numerous-species-interactions-in-multi-species-communities
#6
Caroline Brophy, Áine Dooley, Laura Kirwan, John A Finn, Jack McDonnell, Thomas Bell, Marc W Cadotte, John Connolly
Understanding the biodiversity and ecosystem function relationship can be challenging in species-rich ecosystems. Traditionally, species richness has been relied on heavily to explain changes in ecosystem function across diversity gradients. Diversity-Interactions models can test how ecosystem function is affected by species identity, species interactions and evenness, in addition to richness. However, in a species-rich system, there may be too many species interactions to allow estimation of each coefficient, and if all interaction coefficients are estimable, they may be devoid of any sensible biological meaning...
April 26, 2017: Ecology
https://www.readbyqxmd.com/read/28444511/scale-dependence-in-polychlorinated-biphenyl-pcb-exposure-effects-on-waterbird-habitat-occupancy
#7
James P Gibbs, Shahrokh Rouhani, Leyla Shams
Spatial scale is rarely considered in population-level assessments of contaminant impacts on wild animals; as a result misinterpretation of the relationship between contaminant exposure and population status may occur. We assessed the strength of expression of polychlorinated biphenyl (PCB) exposure effects at local vs. regional spatial scales on population status in five species of waterbirds, "bioaccumulators" often promoted as indicators of contaminant effects in aquatic ecosystems. Our focus was the upper Hudson River where PCBs occur at levels reported to have adverse impacts on wild birds...
April 25, 2017: Ecotoxicology
https://www.readbyqxmd.com/read/28444508/study-protocol-on-the-role-of-intestinal-microbiota-in-colorectal-cancer-treatment-a-pathway-to-personalized-medicine-2-0
#8
R Aarnoutse, J M P G M de Vos-Geelen, J Penders, E G Boerma, F A R M Warmerdam, B Goorts, S W M Olde Damink, Z Soons, S S M Rensen, M L Smidt
PURPOSE: Investigate in patients with metastatic and/or irresectable colorectal cancer treated with systemic treatment with capecitabine or TAS-102 whether: 1. Intestinal microbiota composition can act as a predictor for response. 2. Intestinal microbiota composition changes during systemic treatment and its relation to chemotoxicity. BACKGROUND: Gut microbiota and host determinants evolve in symbiotic and dependent relationships resulting in a personal ecosystem...
April 25, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28444379/killing-the-killer-predation-between-protists-and-predatory-bacteria
#9
Julia Johnke, Jens Boenigk, Hauke Harms, Antonis Chatzinotas
Predation by microbes is one of the main drivers of bacterial mortality in the environment. In most ecosystems multiple micro-predators compete at least partially for the same bacterial resource. Predatory interactions between these micro-predators might lead to shifts within microbial communities. Integrating these interactions is therefore crucial for the understanding of ecosystem functioning. In this study we investigated the predation between two groups of micro-predators, i.e. phagotrophic protists and Bdellovibrio and like organisms (BALOs)...
April 21, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28443120/dissecting-low-atmospheric-pressure-stress-transcriptome-responses-to-the-components-of-hypobaria-in-arabidopsis
#10
Mingqi Zhou, Jordan B Callaham, Matthew Reyes, Michael Stasiak, Alberto Riva, Agata K Zupanska, Mike A Dixon, Anna-Lisa Paul, Robert J Ferl
Controlled hypobaria presents biology with an environment that is never encountered in terrestrial ecology, yet the apparent components of hypobaria are stresses typical of terrestrial ecosystems. High altitude, for example, presents terrestrial hypobaria always with hypoxia as a component stress, since the relative partial pressure of O2 is constant in the atmosphere. Laboratory-controlled hypobaria, however, allows the dissection of pressure effects away from the effects typically associated with altitude, in particular hypoxia, as the partial pressure of O2 can be varied...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28443068/evaluation-of-the-probiotic-strain-bifidobacterium-longum-subsp-infantis-cect-7210-capacities-to-improve-health-status-and-fight-digestive-pathogens-in-a-piglet-model
#11
Emili Barba-Vidal, Lorena Castillejos, Paola López-Colom, Montserrat Rivero Urgell, José A Moreno Muñoz, Susana M Martín-Orúe
Probiotics have been demonstrated to be useful to enhance gut health and prevent gastrointestinal infections. The objective of this study is to demonstrate the potential of the probiotic strain Bifidobacterium longum subsp. infantis CECT 7210 (B. infantis IM1) to prevent and fight intestinal disease by using a Salmonella Typhimurium (Trial 1) or an enterotoxigenic Escherichia coli K88 (Trial 2) oral challenge in a weaning piglet model. Seventy-two piglets were used in each trial. After an adaptation period, animals were orally challenged...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28441638/health-risk-assessment-for-the-consumption-of-fresh-and-preserved-fish-alosa-agone-from-lago-di-como-northern-italy
#12
Silvia Quadroni, Roberta Bettinetti
BACKGROUND: Although banned in many countries for decades, DDTs and PCBs still represent a global threat to food safety. As these contaminants are still present in aquatic ecosystems, fish can be an important contributor to their total dietary intake. OBJECTIVES: Alosa agone specimens were sampled over a period of 10 years (from 2006 to 2015) to provide a representative overview of the DDT and PCB levels of Lago di Como, a deep Italian lake where a DDT input due to secondary sources was observed in recent years...
April 22, 2017: Environmental Research
https://www.readbyqxmd.com/read/28441609/dechlorane-plus-induces-oxidative-stress-and-decreases-cyclooxygenase-activity-in-the-blue-mussel
#13
Pierre-Luc Gagné, Marlène Fortier, Marc Fraser, Lise Parent, Cathy Vaillancourt, Jonathan Verreault
Dechlorane Plus (DP) is a chlorinated flame retardant used mainly in electrical wire and cable coating, computer connectors, and plastic roofing materials. Concentrations of DP (syn and anti isomers) are increasingly being reported in aquatic ecosystems worldwide. However, there is exceedingly little information on the exposure-related toxicity of DP in aquatic organisms, especially in bivalves. The objective of this study was to investigate the in vivo and in vitro effects of DP exposure on histopathology, lipid peroxidation (LPO) levels, cyclooxygenase (COX) activity, phagocytosis capacity and efficiency, and DNA strand breakage in the blue mussel (Mytilus edulis) following a 29days exposure (0...
April 17, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28441601/improving-understanding-of-mixed-land-use-watershed-suspended-sediment-regimes-mechanistic-progress-through-high-frequency-sampling
#14
Elliott Kellner, Jason A Hubbart
Given the importance of suspended sediment to biogeochemical functioning of aquatic ecosystems, and the increasing concern of mixed-land-use effects on pollutant loading, there is an urgent need for research that quantitatively characterizes spatiotemporal variation of suspended sediment dynamics in contemporary watersheds. A study was conducted in a representative watershed of the central United States utilizing a nested-scale experimental watershed design, including five gauging sites (n=5) partitioning the catchment into five sub-watersheds...
April 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28441590/screening-arabidopsis-mutants-in-genes-useful-for-phytoremediation
#15
María Sanz-Fernández, María Rodríguez-Serrano, Ana Sevilla-Perea, Liliana Pena, M Dolores Mingorance, Luisa M Sandalio, María C Romero-Puertas
Emissions of heavy metals have risen over the past 200 years and significantly exceed those from natural sources. Phytoremediation strategies may be able to recover soil productivity in self-sustaining ecosystems; however, our knowledge of the molecular mechanisms involved in plant heavy-metal perception and signalling is scarce. The aim of this study was to assemble a "molecular tool box" of genes useful for phytoremediation. To identify mutants with different heavy-metal-tolerance, we first selected a medium from mixtures containing three metals based on their presence in two Spanish mining areas and then screened about 7000 lines of Arabidopsis T-DNA mutants and found 74 lines more resistant and 56 more susceptible than the wild type (WT)...
April 7, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28441534/managing-the-plant-microbiome-for-biocontrol-fungi-examples-from-hypocreales
#16
REVIEW
Ryan M Kepler, Jude E Maul, Stephen A Rehner
Feeding an increasing global population requires continued improvements in agricultural efficiency and productivity. Meeting estimated future production levels requires the adoption of practices that increase output without environmental degradation associated with external inputs to supplement nutrition or control pests. Enriching the community of microbes associated with plants in agricultural systems for those providing ecosystem services such as pest control is one possible component towards achieving sustainable productivity increases...
April 22, 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/28441467/distribution-of-mammal-functional-diversity-in-the-neotropical-realm-influence-of-land-use-and-extinction-risk
#17
José F González-Maya, Enrique Martínez-Meyer, Rodrigo Medellín, Gerardo Ceballos
Functional diversity represents a measure of diversity that incorporates the role of species in an ecosystem, and therefore its dynamics and resilience. Assessing its drivers and spatial variation represents an important step forward in our understanding of functional ecosystem dynamics and it is also necessary to achieve a comprehensive conservation planning. In this paper, we assessed mammal functional diversity for the 218 ecoregions within the Neotropical realm. We evaluated the overall influence and spatial variation of species richness, ecoregion extent, intervention and species at risk on functional diversity...
2017: PloS One
https://www.readbyqxmd.com/read/28441345/levels-and-distribution-of-pollutants-in-the-waters-of-an-aquatic-ecosystem-in-northern-mexico
#18
Jesús Manuel Ochoa-Rivero, Ana Victoria Reyes-Fierro, Ma Del Rosario Peralta-Pérez, Francisco Javier Zavala-Díaz de la Serna, Lourdes Ballinas-Casarrubias, Ivan Salmerón, Héctor Rubio-Arias, Beatriz A Rocha-Gutiérrez
The availability of good quality water resources is essential to ensure healthy crops and livestock. The objective of this study was to evaluate the level of pollution in Bustillos Lagoon in northern Mexico. Physical-chemical parameters like sodium, chloride, sulfate, electrical conductivity, nitrates, and the pesticide dichlorodiphenyltrichloroethane (DDT) were analyzed to determine the water quality available in the lagoon. Although DDT has been banned in several countries, it is still used for agricultural purposes in Mexico and its presence in this area had not been analyzed previously...
April 25, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28440939/trophic-transfer-of-microplastics-in-aquatic-ecosystems-identifying-critical-research-needs
#19
Sarah Y Au, Cindy M Lee, John E Weinstein, Peter van den Hurk, Stephen J Klaine
To evaluate the process of trophic transfer of microplastics, it is important to consider various abiotic and biotic factors involved in their ingestion, egestion, bioaccumulation, and biomagnification. Toward this end, a review of the literature on microplastics has been conducted to identify factors influencing their uptake and absorption; their residence times in organisms and bioaccumulation; the physical effects of their aggregation in gastrointestinal tracts; and their potential to act as vectors for the transfer of other contaminants...
May 2017: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/28440930/impacts-of-changing-ocean-circulation-on-the-distribution-of-marine-microplastic-litter
#20
Natalie Ac Welden, Amy L Lusher
Marine plastic pollution is currently a major scientific focus, with attention paid to its distribution and impacts within ecosystems. With recent estimates indicating that the mass of plastic released to the marine environment may reach 250 million metric tons by 2025, the effects of plastic on our oceans are set to increase. Distribution of microplastics, those plastics measuring less than 5 mm, are of increasing concern because they represent an increasing proportion of marine litter and are known to interact with species in a range of marine habitats...
May 2017: Integrated Environmental Assessment and Management
keyword
keyword
51323
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"