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https://www.readbyqxmd.com/read/28445642/the-predictive-power-of-clean-bed-filtration-theory-for-fecal-indicator-bacteria-removal-in-stormwater-biofilters
#1
Emily Parker, Megan A Rippy, Andrew Mehring, Brandon Winfrey, Richard F Ambrose, Lisa A Levin, Stanley B Grant
Green infrastructure (also referred to as low impact development, or LID) has the potential to transform urban stormwater runoff from an environmental threat to a valuable water resource. In this paper we focus on the removal of fecal indicator bacteria (FIB, a pollutant responsible for runoff-associated inland and coastal beach closures) in stormwater biofilters (a common type of green infrastructure). Drawing on a combination of previously published and new laboratory studies of FIB removal in biofilters, we find that 66% of the variance in FIB removal rates can be explained by clean bed filtration theory (CBFT, 31%), antecedent dry period (14%), study effect (8%), biofilter age (7%), and the presence or absence of shrubs (6%)...
April 26, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28443052/gih-qi-beyond-affordance
#2
Yang Lee, Robert E Shaw, Zheng Jin
Ancient Eastern thought posited the ontological integration of the "mind-body world". The body-mind syncretism was a foundational precept in Eastern philosophy in which "Gih" ("Qi") was considered the basic entity of the universe and the human being. This study attempts to build a meta-theory and to demonstrate empirical designs for Gih, discussing the problems of the mind and body, or the subject and object, compared with the concept of "affordance" proposed by ecological approaches. The notion of Gih extends beyond that of affordance in that Gih activates a psychosomatic process between the physical condition and the mental state that facilitates the bi-directional interactions between subject and object...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28442569/density-dependence-in-demography-and-dispersal-generates-fluctuating-invasion-speeds
#3
Lauren L Sullivan, Bingtuan Li, Tom E X Miller, Michael G Neubert, Allison K Shaw
Density dependence plays an important role in population regulation and is known to generate temporal fluctuations in population density. However, the ways in which density dependence affects spatial population processes, such as species invasions, are less understood. Although classical ecological theory suggests that invasions should advance at a constant speed, empirical work is illuminating the highly variable nature of biological invasions, which often exhibit nonconstant spreading speeds, even in simple, controlled settings...
April 25, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28442452/homestyles-a-web-based-childhood-obesity-prevention-program-for-families-with-preschool-children-protocol-for-a-randomized-controlled-trial
#4
Carol Byrd-Bredbenner, Jennifer Martin-Biggers, Mallory Koenings, Virginia Quick, Nobuko Hongu, John Worobey
BACKGROUND: The home environment is where young children spend most of their time, and is critically important to supporting behaviors that promote health and prevent obesity. However, the home environment and lifestyle patterns remain understudied, and few interventions have investigated parent-led makeovers designed to create home environments that are supportive of optimal child health and healthy child weights. OBJECTIVE: The aim of the HomeStyles randomized controlled trial (RCT) is to determine whether the Web-based HomeStyles intervention enables and motivates parents to shape the weight-related aspects of their home environments and lifestyle behavioral practices (diet, exercise, and sleep) to be more supportive of their preschool children's optimal health and weight...
April 25, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28441412/the-role-of-climate-and-environmental-variables-in-structuring-bird-assemblages-in-the-seasonally-dry-tropical-forests-sdtfs
#5
Gabriela Silva Ribeiro Gonçalves, Pablo Vieira Cerqueira, Leandro Schlemmer Brasil, Marcos Pérsio Dantas Santos
Understanding the processes that influence species diversity is still a challenge in ecological studies. However, there are two main theories to discuss this topic, the niche theory and the neutral theory. Our objective was to understand the importance of environmental and spatial processes in structuring bird communities within the hydrological seasons in dry forest areas in northeastern Brazil. The study was conducted in two National Parks, the Serra da Capivara and Serra das Confusões National Parks, where 36 areas were sampled in different seasons (dry, dry/rainy transition, rainy, rainy/dry transition), in 2012 and 2013...
2017: PloS One
https://www.readbyqxmd.com/read/28438691/niche-separation-in-flycatcher-like-species-in-the-lowland-rainforests-of-malaysia
#6
Mohammad Saiful Mansor, Rosli Ramli
Niche theory suggests that sympatric species reduce interspecific competition through segregation of shared resources by adopting different attack manoeuvres. However, the fact that flycatcher-like bird species exclusively use the sally manoeuvre may thus challenge this view. We studied the foraging ecology of three flycatcher-like species (i.e. Paradise-flycatcher Terpsiphone sp., Black-naped Monarch Hypothymis azurea, and Rufous-winged Philentoma Philentoma pyrhoptera) in the Krau Wildlife Reserve in central Peninsular Malaysia...
April 21, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28436265/recruiting-african-american-children-for-research-an-ecological-systems-theory-approach
#7
Diane Graves, Jane P Sheldon
With health disparities still pervasive and persistent in the United States, medical researchers and social scientists continue to develop recruitment strategies to increase the inclusion of racial/ethnic minority groups in research and interventions. Effective methods for recruiting samples of African American participants for pediatric research may be best understood when situated within an overarching conceptual model-one that serves to organize and explain effective recruitment strategies. A theoretical framework well suited for this purpose is Bronfenbrenner's ecological systems theory, which views individuals as influencing and being influenced by (both directly and indirectly) a series of interconnected social systems...
April 1, 2017: Western Journal of Nursing Research
https://www.readbyqxmd.com/read/28434188/drivers-of-community-assembly-in-tropical-forest-restoration-sites-role-of-local-environment-landscape-and-space
#8
Lívia D Audino, Stephen J Murphy, Ludimila Zambaldi, Julio Louzada, Liza S Comita
There is increasing recognition that community assembly theory can offer valuable insights for ecological restoration. We studied community assembly processes following tropical forest restoration efforts, using dung beetles (Scarabaeidae) as a focal taxon to investigate taxonomic and functional patterns of biodiversity recovery. We evaluated the relative importance of the local environment (i.e., canopy cover, understory cover, tree basal area, and soil texture), landscape context (i.e., habitat patch proximity and availability and percentage of surrounding area classified as natural forest or Eucalyptus spp...
April 23, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28424345/floaters-may-buffer-the-extinction-risk-of-small-populations-an-empirical-assessment
#9
Hugo Robles, Carlos Ciudad
The high extinction risk of small populations is commonly explained by reductions in fecundity and breeder survival associated with demographic and environmental stochasticity. However, ecological theory suggests that population extinctions may also arise from reductions in the number of floaters able to replace the lost breeders. This can be particularly plausible under harsh fragmentation scenarios, where species must survive as small populations subjected to severe effects of stochasticity. Using a woodpecker study in fragmented habitats (2004-2016), we provide here empirical support for the largely neglected hypothesis that floaters buffer population extirpation risks...
April 26, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28422704/influencing-factors-on-high-risk-sexual-behaviors-in-young-people-an-ecological-perspective
#10
Hoda Arabi-Mianrood, Zeinab Hamzehgardeshi, Elham Khoori, Mahmood Moosazadeh, Zohreh Shahhosseini
Background In recent years, high-risk sexual behaviors due to their negative consequences both for the individual and society have received more attention than other high-risk behaviors. Objective The aim of this study was to review the influencing factors of high-risk sexual behaviors among young people from an ecological point of view. Methods This review was conducted through searching databases including PubMed, Web of Science, Scopus, Google Scholar and the Cochrane Library with keywords such as sexual risk-taking behavior, high-risk sex, unprotected sex and unsafe sex...
April 19, 2017: International Journal of Adolescent Medicine and Health
https://www.readbyqxmd.com/read/28421267/potential-distribution-of-mountain-cloud-forest-in-michoac%C3%A3-n-mexico-prioritization-for-conservation-in-the-context-of-landscape-connectivity
#11
Camilo A Correa Ayram, Manuel E Mendoza, Andrés Etter, Diego R Pérez Salicrup
Landscape connectivity is essential in biodiversity conservation because of its ability to reduce the effect of habitat fragmentation; furthermore is a key property in adapting to climate change. Potential distribution models and landscape connectivity studies have increased with regard to their utility to prioritizing areas for conservation. The objective of this study was to model the potential distribution of Mountain cloud forests in the Transversal Volcanic System, Michoacán and to analyze the role of these areas in maintaining landscape connectivity...
April 18, 2017: Environmental Management
https://www.readbyqxmd.com/read/28420191/designing-effective-interactions-for-concordance-around-end-of-life-care-decisions-lessons-from-hospice-admission-nurses
#12
Carey Candrian, Channing Tate, Kirsten Broadfoot, Alexandra Tsantes, Daniel Matlock, Jean Kutner
Near the end of life, hospice care reduces symptom-related distress and hospitalizations while improving caregiving outcomes. However, it takes time for a person to gain a sufficient understanding of hospice and decide to enroll. This decision is influenced by knowledge of hospice and its services, emotion and fear, cultural and religious beliefs, and an individual's acceptance of diagnosis. Hospice admission interactions, a key influence in shaping decisions regarding hospice care, happen particularly late in the illness trajectory and are often complex, unpredictable, and highly variable...
April 18, 2017: Behavioral Sciences
https://www.readbyqxmd.com/read/28416694/experimental-dispersal-reveals-characteristic-scales-of-biodiversity-in-a-natural-landscape
#13
Rachel M Germain, Sharon Y Strauss, Benjamin Gilbert
Ecological theory posits that dispersal among habitat patches links local communities and is a key "regional" process that maintains biological diversity. However, manipulations required to experimentally test regional processes are infeasible for most systems, and thus more work is needed to detect the scales at which regional processes manifest and their overall effect on diversity. In a Californian grassland, a hotspot for global biodiversity, we used a seed vacuum to increase dispersal at spatial scales varying from 1 m to 10 km while maintaining a realistic spatial structure of species pools and environmental conditions...
April 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28412270/how-surgeons-conceptualize-talent-a-qualitative-study-using-sport-science-as-a-lens
#14
Rune Dall Jensen, Mette Krogh Christensen, Kori A LaDonna, Mikkel Seyer-Hansen, Sayra Cristancho
OBJECTIVES: Debates prevail regarding the definition of surgical talent, and how individuals with the potential to become talented surgeons can be identified and developed. However, over the past 30 years, talent has been studied extensively in other domains. The objectives of this study is to explore notions of talent in surgery and sport in order to investigate if the field of surgical education can benefit from expanding its view on talented performances. Therefore, this study aims to use the sport literature as a lens when exploring how surgeons conceptualize and define talent...
April 12, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28410031/the-ecological-dynamics-of-natural-selection-traits-and-the-coevolution-of-community-structure
#15
Mark A McPeek
Natural selection has both genetic and ecological dynamics. The fitnesses of individuals change with their ecological context, and so the form and strength of selective agents change with abiotic factors and the phenotypes and abundances of interacting species. I use standard models of consumer-resource interactions to explore the ecological dynamics of natural selection and how various trait types influence these dynamics and the resulting structure of a community of coevolving species. Evolutionary optima favored by natural selection depend critically on the abundances of interacting species, and the traits of species can undergo dynamic cycling in limited areas of parameter space...
May 2017: American Naturalist
https://www.readbyqxmd.com/read/28410029/ecological-pleiotropy-suppresses-the-dynamic-feedback-generated-by-a-rapidly-changing-trait
#16
John P DeLong
Population dynamics may carry a signature of an ecology-evolution-ecology feedback, known as eco-evolutionary dynamics, when functionally important traits change. Given current theory, the absence of a feedback from a trait with strong links to species interactions should not occur. In a previous study with the Didinium-Paramecium predator-prey system, however, rapid and large-magnitude changes in predator cell volume occurred without any noticeable effect on the population dynamics. Here I resolve this theory-data conflict by showing that ecological pleiotropy-when a trait has more than one functional effect on an ecological process-suppresses shifts in dynamics that would arise, given the links between cell volume and the species interaction...
May 2017: American Naturalist
https://www.readbyqxmd.com/read/28406679/gently-does-it-humans-outperform-a-software-classifier-in-recognizing-subtle-nonstereotypical-facial-expressions
#17
Neta Yitzhak, Nir Giladi, Tanya Gurevich, Daniel S Messinger, Emily B Prince, Katherine Martin, Hillel Aviezer
According to dominant theories of affect, humans innately and universally express a set of emotions using specific configurations of prototypical facial activity. Accordingly, thousands of studies have tested emotion recognition using sets of highly intense and stereotypical facial expressions, yet their incidence in real life is virtually unknown. In fact, a commonplace experience is that emotions are expressed in subtle and nonprototypical forms. Such facial expressions are at the focus of the current study...
April 13, 2017: Emotion
https://www.readbyqxmd.com/read/28405367/shifts-in-rotifer-life-history-in-response-to-stable-isotope-enrichment-testing-theories-of-isotope-effects-on-organismal-growth
#18
Elena Gorokhova
In ecology, stable isotope labelling is commonly used for tracing material transfer in trophic interactions, nutrient budgets and biogeochemical processes. The main assumption in this approach is that the enrichment with a heavy isotope has no effect on the organism growth and metabolism. This assumption is, however, challenged by theoretical considerations and experimental studies on kinetic isotope effects in vivo. Here, I demonstrate profound changes in life histories of the rotifer Brachionus plicatilis fed (15)N-enriched algae (0...
March 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28405296/consumptive-and-nonconsumptive-effect-ratios-depend-on-interaction-between-plant-quality-and-hunting-behavior-of-omnivorous-predators
#19
Jörg G Stephan, Johan A Stenberg, Christer Björkman
Predators not only consume prey but exert nonconsumptive effects in form of scaring, consequently disturbing feeding or reproduction. However, how alternative food sources and hunting mode interactively affect consumptive and nonconsumptive effects with implications for prey fitness have not been addressed, impending functional understanding of such tritrophic interactions. With a herbivorous beetle, two omnivorous predatory bugs (plant sap as alternative food, contrasting hunting modes), and four willow genotypes (contrasting suitability for beetle/omnivore), we investigated direct and indirect effects of plant quality on the beetles key reproductive traits (oviposition rate, clutch size)...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28405270/group-foraging-in-socotra-cormorants-a-biologging-approach-to-the-study-of-a-complex-behavior
#20
Timothée R Cook, Rob Gubiani, Peter G Ryan, Sabir B Muzaffar
Group foraging contradicts classic ecological theory because intraspecific competition normally increases with aggregation. Hence, there should be evolutionary benefits to group foraging. The study of group foraging in the field remains challenging however, because of the large number of individuals involved and the remoteness of the interactions to the observer. Biologging represents a cost-effective solution to these methodological issues. By deploying GPS and temperature-depth loggers on individuals over a period of several consecutive days, we investigated intraspecific foraging interactions in the Socotra cormorant Phalacrocorax nigrogularis, a threatened colonial seabird endemic to the Arabian Peninsula...
April 2017: Ecology and Evolution
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