keyword
MENU ▼
Read by QxMD icon Read
search

Ecological system

keyword
https://www.readbyqxmd.com/read/29232545/influence-of-the-social-determinants-of-health-on-access-to-healthcare-services-among-refugees-in-australia
#1
Jessica Taylor, Greer Lamaro Haintz
Refugees in Australia are not fully utilising the healthcare system for several reasons and this may be affecting their overall health outcomes. This qualitative systematic review examined the influence of the social determinants of health on refugees' access to healthcare services in Australia. Electronic databases were searched using terms relating to refugees, social determinants, healthcare services, barriers, enablers and Australia. Only peer-reviewed studies published in English since 2006, which focused on refugees and specifically discussed social determinants influencing refugees' access to healthcare services in Australia, were included...
December 13, 2017: Australian Journal of Primary Health
https://www.readbyqxmd.com/read/29231923/temporally-inter-comparable-maps-of-terrestrial-wilderness-and-the-last-of-the-wild
#2
James R Allan, Oscar Venter, James E M Watson
Wilderness areas, defined as areas free of industrial scale activities and other human pressures which result in significant biophysical disturbance, are important for biodiversity conservation and sustaining the key ecological processes underpinning planetary life-support systems. Despite their importance, wilderness areas are being rapidly eroded in extent and fragmented. Here we present the most up-to-date temporally inter-comparable maps of global terrestrial wilderness areas, which are essential for monitoring changes in their extent, and for proactively planning conservation interventions to ensure their preservation...
December 12, 2017: Scientific Data
https://www.readbyqxmd.com/read/29231813/evolutionary-transitions-between-beneficial-and-phytopathogenic-rhodococcus-challenge-disease-management
#3
Elizabeth A Savory, Skylar L Fuller, Alexandra J Weisberg, William J Thomas, Michael I Gordon, Danielle M Stevens, Allison L Creason, Michael S Belcher, Maryna Serdani, Michele S Wiseman, Niklaus J Grünwald, Melodie L Putnam, Jeff H Chang
Understanding how bacteria affect plant health is crucial for developing sustainable crop production systems. We coupled ecological sampling and genome sequencing to characterize the population genetic history of Rhodococcus and the distribution patterns of virulence plasmids in isolates from nurseries. Analysis of chromosome sequences shows that plants host multiple lineages of Rhodococcus, and suggested that these bacteria are transmitted due to independent introductions, reservoir populations, and point source outbreaks...
December 12, 2017: ELife
https://www.readbyqxmd.com/read/29230645/pollution-evaluation-of-total-and-acid-leachable-trace-elements-in-surface-sediments-of-hooghly-river-estuary-and-sundarban-mangrove-wetland-india
#4
Priyanka Mondal, Amanda J Reichelt-Brushett, M P Jonathan, S B Sujitha, Santosh Kumar Sarkar
The present work investigated the spatial distribution and ecological risk assessment of total and mild acid-leachable trace elements in surface sediments (top 0-10 cm; grain size ≤ 63 μm) along the Hooghly (Ganges) River Estuary and Sundarban Mangrove Wetland, India. The trace elements, analyzed by ICPMS, showed wide range of variations with the following descending order (mean values expressed in milligrams per kilogram): Fe (25,050 ± 4918) > Al (16,992 ± 4172) > Mn (517 ± 102) > Zn (53 ± 18) > Cu (33 ± 11) > Cr (29 ± 7) > Ni (27 ± 6) > Pb (14 ± 3) > As (5 ± 1) > Se (0...
December 11, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29230215/potential-effects-of-horizontal-gene-exchange-in-the-human-gut
#5
Aaron Lerner, Torsten Matthias, Rustam Aminov
Many essential functions of the human body are dependent on the symbiotic microbiota, which is present at especially high numbers and diversity in the gut. This intricate host-microbe relationship is a result of the long-term coevolution between the two. While the inheritance of mutational changes in the host evolution is almost exclusively vertical, the main mechanism of bacterial evolution is horizontal gene exchange. The gut conditions, with stable temperature, continuous food supply, constant physicochemical conditions, extremely high concentration of microbial cells and phages, and plenty of opportunities for conjugation on the surfaces of food particles and host tissues, represent one of the most favorable ecological niches for horizontal gene exchange...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29230200/from-genes-to-ecosystems-in-microbiology-modeling-approaches-and-the-importance-of-individuality
#6
REVIEW
Jan-Ulrich Kreft, Caroline M Plugge, Clara Prats, Johan H J Leveau, Weiwen Zhang, Ferdi L Hellweger
Models are important tools in microbial ecology. They can be used to advance understanding by helping to interpret observations and test hypotheses, and to predict the effects of ecosystem management actions or a different climate. Over the past decades, biological knowledge and ecosystem observations have advanced to the molecular and in particular gene level. However, microbial ecology models have changed less and a current challenge is to make them utilize the knowledge and observations at the genetic level...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29228986/addressing-vulnerability-building-resilience-community-based-adaptation-to-vector-borne-diseases-in-the-context-of-global-change
#7
REVIEW
Kevin Louis Bardosh, Sadie Ryan, Kris Ebi, Susan Welburn, Burton Singer
BACKGROUND: The threat of a rapidly changing planet - of coupled social, environmental and climatic change - pose new conceptual and practical challenges in responding to vector-borne diseases. These include non-linear and uncertain spatial-temporal change dynamics associated with climate, animals, land, water, food, settlement, conflict, ecology and human socio-cultural, economic and political-institutional systems. To date, research efforts have been dominated by disease modeling, which has provided limited practical advice to policymakers and practitioners in developing policies and programmes on the ground...
December 11, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/29228877/homogenization-techniques-for-population-dynamics-in-strongly-heterogeneous-landscapes
#8
Brian P Yurk, Christina A Cobbold
An important problem in spatial ecology is to understand how population-scale patterns emerge from individual-level birth, death, and movement processes. These processes, which depend on local landscape characteristics, vary spatially and may exhibit sharp transitions through behavioural responses to habitat edges, leading to discontinuous population densities. Such systems can be modelled using reaction-diffusion equations with interface conditions that capture local behaviour at patch boundaries. In this work we develop a novel homogenization technique to approximate the large-scale dynamics of the system...
December 2018: Journal of Biological Dynamics
https://www.readbyqxmd.com/read/29227994/low-cost-low-tech-snp-genotyping-tools-for-resource-limited-areas-plague-in-madagascar-as-a-model
#9
Cedar L Mitchell, Voahangy Andrianaivoarimanana, Rebecca E Colman, Joseph Busch, Heidie Hornstra-O'Neill, Paul S Keim, David M Wagner, Minoarisoa Rajerison, Dawn N Birdsell
BACKGROUND: Genetic analysis of pathogenic organisms is a useful tool for linking human cases together and/or to potential environmental sources. The resulting data can also provide information on evolutionary patterns within a targeted species and phenotypic traits. However, the instruments often used to generate genotyping data, such as single nucleotide polymorphisms (SNPs), can be expensive and sometimes require advanced technologies to implement. This places many genotyping tools out of reach for laboratories that do not specialize in genetic studies and/or lack the requisite financial and technological resources...
December 11, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29227946/cross-disciplinary-links-in-environmental-systems-science-current-state-and-claimed-needs-identified-in-a-meta-review-of-process-models
#10
REVIEW
Daniel Ayllón, Volker Grimm, Sabine Attinger, Michael Hauhs, Clemens Simmer, Harry Vereecken, Gunnar Lischeid
Terrestrial environmental systems are characterised by numerous feedback links between their different compartments. However, scientific research is organized into disciplines that focus on processes within the respective compartments rather than on interdisciplinary links. Major feedback mechanisms between compartments might therefore have been systematically overlooked so far. Without identifying these gaps, initiatives on future comprehensive environmental monitoring schemes and experimental platforms might fail...
December 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29226606/the-challenges-of-implementing-an-integrated-one-health-surveillance-system-in-australia
#11
I Johnson, A Hansen, P Bi
As 75 per cent of emerging infectious diseases are of animal origin, a One Health approach that integrates the health of humans, animals and the environment could provide an earlier opportunity for zoonotic disease detection and prevention. In Australia, human, animal and ecological health are managed by separate sectors with limited communication. This study aims to explore how professionals in these fields perceive a One Health approach to zoonotic disease surveillance, aiming to identify the challenges to the implementation of an integrated system in Australia...
December 10, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/29226035/molecular-evolution-of-virulence-genes-and-non-virulence-genes-in-clinical-natural-and-artificial-environmental-legionella-pneumophila-isolates
#12
Xiao-Yong Zhan, Qing-Yi Zhu
Background: L. pneumophila is the main causative agent of Legionnaires' disease. Free-living amoeba in natural aquatic environments is the reservoir and shelter for L. pneumophila. From natural water sources, L. pneumophila can colonize artificial environments such as cooling towers and hot-water systems, and then spread in aerosols, infecting the susceptible person. Therefore, molecular phylogeny and genetic variability of L. pneumophila from different sources (natural water, artificial water, and human lung tissue) might be distinct because of the selection pressure in different environments...
2017: PeerJ
https://www.readbyqxmd.com/read/29223686/nourishing-networks-a-social-ecological-analysis-of-a-network-intervention-for-improving-household-nutrition-in-western-kenya
#13
Autumn L DeLorme, Erika R Gavenus, Charles R Salmen, Gor Ouma Benard, Brian Mattah, Elizabeth Bukusi, Kathryn J Fiorella
RATIONALE: A growing body of research emphasizes the need to engage social networks in maternal and child nutrition interventions. However, an understanding of how interventions functionally engage not only mothers but fathers, grandparents, friends, and other social network members remains limited. OBJECTIVE: This study uses an adaptation of a social-ecological model to analyze the multiple levels at which the Kanyakla Nutrition Program operates to change behavior...
November 20, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/29223596/presence-and-persistence-of-the-amnesic-shellfish-poisoning-toxin-domoic-acid-in-octopus-and-cuttlefish-brains
#14
Vanessa M Lopes, Rui Rosa, Pedro R Costa
Domoic acid (DA) is a neurotoxin that causes degenerative damage to brain cells and induces permanent short-term memory loss in mammals. In cephalopod mollusks, although DA is known to accumulate primarily in the digestive gland, there is no knowledge whether DA reaches their central nervous system. Here we report, for the first time, the presence of DA in brain tissue of the common octopus (Octopus vulgaris) and the European cuttlefish (Sepia officinalis), and its absence in the brains of several squid species (Loligo vulgaris, L...
December 5, 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/29223121/from-information-to-participation-and-self-organization-visions-for-european-river-basin-management
#15
Johannes Euler, Sonja Heldt
The European Union Water Framework Directive (EU WFD, 2000) calls for active inclusion of the public in the governance of waterbodies to enhance the effectiveness and legitimacy of water management schemes across the EU. As complex socio-ecological systems, river basins in western Europe could benefit from further support for inclusive management schemes. This paper makes use of case studies from Germany, England and Spain to explore the potential opportunities and challenges of different participatory management approaches...
December 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29222098/longitudinal-study-of-the-occurrence-persistence-and-contamination-routes-of-listeria-monocytogenes-genotypes-on-three-finnish-dairy-cattle-farms
#16
Hanna Castro, Anniina Jaakkonen, Marjaana Hakkinen, Hannu Korkeala, Miia Lindström
The molecular epidemiology of Listeria monocytogenes was investigated in a longitudinal study of three Finnish dairy farms during 2013 -- 2016. Totals of 186 bulk tank milk (BTM) samples, 224 milk filter socks (MFS), and 1702 samples of the barn environment were analyzed and isolates of L. monocytogenes were genotyped using pulsed-field gel electrophoresis. L. monocytogenes occurred throughout the year in all sample types, and the prevalence in MFS increased significantly during the indoor season. L. monocytogenes was more prevalent in MFS (29%) than in BTM samples (13%)...
December 8, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29218801/frontiers-in-alley-cropping-transformative-solutions-for-temperate-agriculture
#17
Kevin J Wolz, Sarah T Lovell, Bruce E Branham, William C Eddy, Keefe Keeley, Ronald S Revord, Michelle M Wander, Wendy H Yang, Evan H DeLucia
Annual row crops dominate agriculture around the world and have considerable negative environmental impacts, including significant greenhouse gas emissions. Transformative land-use solutions are necessary to mitigate climate change and restore critical ecosystem services. Alley cropping (AC)-the integration of trees with crops-is an agroforestry practice that has been studied as a transformative, multifunctional land-use solution. In the temperate zone, AC has strong potential for climate change mitigation through direct emissions reductions and increases in land-use efficiency via overyielding compared to trees and crops grown separately...
December 8, 2017: Global Change Biology
https://www.readbyqxmd.com/read/29218031/crispr-cas-systems-in-bacteroides-fragilis-an-important-pathobiont-in-the-human-gut-microbiome
#18
Mehrdad Tajkarimi, Hannah M Wexler
Background: While CRISPR-Cas systems have been identified in bacteria from a wide variety of ecological niches, there are no studies to describe CRISPR-Cas elements in Bacteroides species, the most prevalent anaerobic bacteria in the lower intestinal tract. Microbes of the genus Bacteroides make up ~25% of the total gut microbiome. Bacteroides fragilis comprises only 2% of the total Bacteroides in the gut, yet causes of >70% of Bacteroides infections. The factors causing it to transition from benign resident of the gut microbiome to virulent pathogen are not well understood, but a combination of horizontal gene transfer (HGT) of virulence genes and differential transcription of endogenous genes are clearly involved...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29217628/conversion-efficiency-of-alpha-linolenic-acid-to-omega-3-highly-unsaturated-fatty-acids-in-aerial-insectivore-chicks
#19
Cornelia W Twining, Peter Lawrence, David W Winkler, Alexander S Flecker, J Thomas Brenna
Food availability and quality are both critical for growing young animals. In nature, swallows (Tachycineta bicolor) and other aerial insectivores feed on both aquatic insects, which are rich in omega-3 highly unsaturated fatty acids (HUFA) and terrestrial insects, which contain considerably lower amounts of omega-3 HUFA. Carnivorous mammals and fishes must obtain omega-3 HUFA from diet, as they have lost the capacity to convert the precursor omega-3 ALA into omega-3 HUFA. Thus, the relative value of aquatic versus terrestrial insects depends not only on the fatty acid composition of the prey, but also upon the capacity of consumers to convert ALA into omega-3 HUFA...
December 7, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29216839/rates-of-morphological-evolution-asymmetry-and-morphological-integration-of-shell-shape-in-scallops
#20
Emma Sherratt, Jeanne M Serb, Dean C Adams
BACKGROUND: Rates of morphological evolution vary across different taxonomic groups, and this has been proposed as one of the main drivers for the great diversity of organisms on Earth. Of the extrinsic factors pertaining to this variation, ecological hypotheses feature prominently in observed differences in phenotypic evolutionary rates across lineages. But complex organisms are inherently modular, comprising distinct body parts that can be differentially affected by external selective pressures...
December 8, 2017: BMC Evolutionary Biology
keyword
keyword
46893
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"