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Ecological theory

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https://www.readbyqxmd.com/read/27921274/evaluating-determinants-of-rural-villagers-engagement-in-conservation-and-waste-management-behaviors-based-on-integrated-conceptual-framework-of-pro-environmental-behavior
#1
Piyapong Janmaimool, Chaweewan Denpaiboon
This study aims to evaluate determinants of villagers' engagement in pro-environmental behavior (PEB), including ecological conservation behavior (ECB) and waste management behavior (WMB). An integrated exploratory model representing the proposed relationship between villagers' engagement in ECB/WMB and their determinants was created based on the integration of the theory of planned behavior (TPB), the Stern's value belief norm (VBN) theory, environmental education and psychosocial characteristic perspectives...
December 2016: Life Sciences, Society and Policy
https://www.readbyqxmd.com/read/27920390/life-history-trade-offs-the-intensity-of-competition-and-coexistence-in-novel-and-evolving-communities-under-climate-change
#2
Lesley T Lancaster, Gavin Morrison, Robert N Fitt
The consequences of climate change for local biodiversity are little understood in process or mechanism, but these changes are likely to reflect both changing regional species pools and changing competitive interactions. Previous empirical work largely supports the idea that competition will intensify under climate change, promoting competitive exclusions and local extinctions, while theory and conceptual work indicate that relaxed competition may in fact buffer communities from biodiversity losses that are typically witnessed at broader spatial scales...
January 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/27920384/antibiotic-resistance-in-the-wild-an-eco-evolutionary-perspective
#3
REVIEW
Teppo Hiltunen, Marko Virta, Anna-Liisa Laine
The legacy of the use and misuse of antibiotics in recent decades has left us with a global public health crisis: antibiotic-resistant bacteria are on the rise, making it harder to treat infections. At the same time, evolution of antibiotic resistance is probably the best-documented case of contemporary evolution. To date, research on antibiotic resistance has largely ignored the complexity of interactions that bacteria engage in. However, in natural populations, bacteria interact with other species; for example, competition and grazing are import interactions influencing bacterial population dynamics...
January 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/27920374/urban-driven-phenotypic-changes-empirical-observations-and-theoretical-implications-for-eco-evolutionary-feedback
#4
REVIEW
Marina Alberti, John Marzluff, Victoria M Hunt
Emerging evidence that cities drive micro-evolution raises the question of whether rapid urbanization of Earth might impact ecosystems by causing systemic changes in functional traits that regulate urban ecosystems' productivity and stability. Intraspecific trait variation-variation in organisms' morphological, physiological or behavioural characteristics stemming from genetic variability and phenotypic plasticity-has significant implications for ecological functions such as nutrient cycling and primary productivity...
January 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/27918951/subjective-alcohol-responses-in-a-cross-sectional-field-based-study-of-adolescents-and-young-adults-effects-of-age-drinking-level-and-dependence-consequences
#5
Hayley Treloar, Mark A Celio, Stephen A Lisman, Robert Miranda, Linda P Spear
BACKGROUND: Adolescents are physically, cognitively, socially, and emotionally different than adults in ways that may partially explain why alcohol misuse typically develops during this period. Ample animal-science evidence and nascent ecological evidence points toward developmentally limited differences in sensitivity to alcohol's stimulatory and sedative effects. Field-based research methods were used to test for such age-related differences in a sample of adolescents through young adults...
November 16, 2016: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/27915074/evolutionary-stability-for-matrix-games-under-time-constraints
#6
József Garay, Villő Csiszár, Tamás F Móri
Game theory focuses on payoffs and typically ignores time constraints that play an important role in evolutionary processes where the repetition of games can depend on the strategies, too. We introduce a matrix game under time constraints, where each pairwise interaction has two consequences: both players receive a payoff and they cannot play the next game for a specified time duration. Thus our model is defined by two matrices: a payoff matrix and an average time duration matrix. Maynard Smith's concept of evolutionary stability is extended to this class of games...
November 30, 2016: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/27914918/epigenetic-game-theory-how-to-compute-the-epigenetic-control-of-maternal-to-zygotic-transition
#7
REVIEW
Qian Wang, Kirk Gosik, Sujuan Xing, Libo Jiang, Lidan Sun, Vernon M Chinchilli, Rongling Wu
Epigenetic reprogramming is thought to play a critical role in maintaining the normal development of embryos. How the methylation state of paternal and maternal genomes regulates embryogenesis depends on the interaction and coordination of the gametes of two sexes. While there is abundant research in exploring the epigenetic interactions of sperms and oocytes, a knowledge gap exists in the mechanistic quantitation of these interactions and their impact on embryo development. This review aims at formulating a modeling framework to address this gap through the integration and synthesis of evolutionary game theory and the latest discoveries of the epigenetic control of embryo development by next-generation sequencing...
November 9, 2016: Physics of Life Reviews
https://www.readbyqxmd.com/read/27914196/ecological-caring-revisiting-the-original-ideas-of-caring-science
#8
Helena Dahlberg, Albertine Ranheim, Karin Dahlberg
The aim of this empirically grounded philosophical paper is to explore the notion of holistic care with the intention to expand it into a notion of ecological care and in such a way revisit the original ideas of caring science. The philosophical analysis, driven by lifeworld theory and especially Merleau-Ponty's philosophy, is firmly rooted in contemporary clinical care. We used interview data from patients in a study at an anthroposophic clinic in Sweden, which forms part of an ecological community with, for example, ecological agriculture...
2016: International Journal of Qualitative Studies on Health and Well-being
https://www.readbyqxmd.com/read/27912023/predicting-nutrient-excretion-of-aquatic-animals-with-metabolic-ecology-and-ecological-stoichiometry-a-global-synthesis
#9
Michael J Vanni, Peter B McIntyre
The metabolic theory of ecology (MTE) and ecological stoichiometry (ES) are both prominent frameworks for understanding energy and nutrient budgets of organisms. We tested their separate and joint power to predict nitrogen (N) and phosphorus (P) excretion rates of ectothermic aquatic invertebrate and vertebrate animals (10,534 observations worldwide). MTE variables (body size, temperature) performed better than ES variables (trophic guild, vertebrate classification, body N:P) in predicting excretion rates, but the best models included variables from both frameworks...
December 2016: Ecology
https://www.readbyqxmd.com/read/27909418/risk-and-ambiguity-in-information-seeking-eye-gaze-patterns-reveal-contextual-behavior-in-dealing-with-uncertainty
#10
Peter Wittek, Ying-Hsang Liu, Sándor Darányi, Tom Gedeon, Ik Soo Lim
Information foraging connects optimal foraging theory in ecology with how humans search for information. The theory suggests that, following an information scent, the information seeker must optimize the tradeoff between exploration by repeated steps in the search space vs. exploitation, using the resources encountered. We conjecture that this tradeoff characterizes how a user deals with uncertainty and its two aspects, risk and ambiguity in economic theory. Risk is related to the perceived quality of the actually visited patch of information, and can be reduced by exploiting and understanding the patch to a better extent...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27903936/operationalising-cognitive-fatigability-in-multiple-sclerosis-a-gordian-knot-that-can-be-cut
#11
Anthony Mark Harrison, Roshan das Nair, Rona Moss-Morris
BACKGROUND: Researchers have attempted to operationalise objective measures of cognitive fatigability in multiple sclerosis (MS) to overcome the perceived subjectivity of patient-reported outcomes of fatigue (PROs). Measures of cognitive fatigability examine decrements in performance during sustained neurocognitive tasks. OBJECTIVE: This personal viewpoint briefly summarises available evidence for measures of cognitive fatigability in MS and considers their overall utility...
November 30, 2016: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/27893775/extinction-debt-and-colonizer-credit-on-a-habitat-perturbed-fishing-bank
#12
Daniel E Duplisea, Michael G Frisk, Verena M Trenkel
Temporal changes in occupancy of the Georges Bank (NE USA) fish and invertebrate community were examined and interpreted in the context of systems ecological theory of extinction debt (EDT). EDT posits that in a closed system with a mix of competitor and colonizer species and experiencing habitat fragmentation and loss, the competitor species will show a gradual decline in fitness (occupancy) eventually leading to their extinction (extirpation) over multiple generations. A corollary of this is a colonizer credit, where colonizer species occupancy may increase with fragmentation because the disturbance gives that life history a transient relative competitive advantage...
2016: PloS One
https://www.readbyqxmd.com/read/27884467/elucidating-ozonation-mechanisms-of-organic-micropollutants-based-on-dft-calculations-taking-sulfamethoxazole-as-a-case
#13
Siyu Zhang, Gang Yu, Jingwen Chen, Qing Zhao, Xuejiao Zhang, Bin Wang, Jun Huang, Shubo Deng, Yujue Wang
Ozonation is widely used in wastewater treatment plants to remove diverse organic micropollutants. As molecular structures of organic micropollutants contain multiple ozone-preferred reaction sites, and moreover intermediate products can react with ozone again, ozonation mechanism is complex. A fast increasing number of organic micropollutants and a great demand of ecological risk assessments call for an in silico method to provide insights into the ozonation mechanism of organic micropollutants. Here, an in silico model was developed to unveil ozonation mechanisms of organic micropollutants...
January 2017: Environmental Pollution
https://www.readbyqxmd.com/read/27882595/children-s-representation-and-imitation-of-events-how-goal-organization-influences-3-year-old-children-s-memory-for-action-sequences
#14
Jeff Loucks, Christina Mutschler, Andrew N Meltzoff
Children's imitation of adults plays a prominent role in human cognitive development. However, few studies have investigated how children represent the complex structure of observed actions which underlies their imitation. We integrate theories of action segmentation, memory, and imitation to investigate whether children's event representation is organized according to veridical serial order or a higher level goal structure. Children were randomly assigned to learn novel event sequences either through interactive hands-on experience (Study 1) or via storybook (Study 2)...
November 24, 2016: Cognitive Science
https://www.readbyqxmd.com/read/27879110/population-models-with-quasi-constant-yield-harvest-rates
#15
Kunquan Lan, Wei Lin
One-dimensional logistic population models with quasi-constant-yield harvest rates are studied under the assumptions that a population inhabits a patch of dimensionless width and no members of the population can survive outside of the patch. The essential problem is to determine the size of the patch and the ranges of the harvesting rate functions under which the population survives or becomes extinct. This is the first paper which discusses such models with the Dirichlet boundary conditions and can tell the exact quantity of harvest rates of the species without having the population die out...
April 1, 2017: Mathematical Biosciences and Engineering: MBE
https://www.readbyqxmd.com/read/27878537/a-synthesis-of-convergent-reflections-tensions-and-silences-in-linking-gender-and-global-environmental-change-research
#16
EDITORIAL
Irene Iniesta-Arandia, Federica Ravera, Stephanie Buechler, Isabel Díaz-Reviriego, María E Fernández-Giménez, Maureen G Reed, Mary Thompson-Hall, Hailey Wilmer, Lemlem Aregu, Philippa Cohen, Houria Djoudi, Sarah Lawless, Berta Martín-López, Thomas Smucker, Grace B Villamor, Elizabeth Edna Wangui
This synthesis article joins the authors of the special issue "Gender perspectives in resilience, vulnerability and adaptation to global environmental change" in a common reflective dialogue about the main contributions of their papers. In sum, here we reflect on links between gender and feminist approaches to research in adaptation and resilience in global environmental change (GEC). The main theoretical contributions of this special issue are threefold: emphasizing the relevance of power relations in feminist political ecology, bringing the livelihood and intersectionality approaches into GEC, and linking resilience theories and critical feminist research...
December 2016: Ambio
https://www.readbyqxmd.com/read/27873222/young-children-s-developmental-ecologies-and-kindergarten-readiness
#17
Stefanie Mollborn
Children enter the crucial transition to school with sociodemographic disparities firmly established. Domain-specific research (e.g., on poverty and family structure) has shed light on these disparities, but we need broader operationalizations of children's environments to explain them. Building on existing theory, this study articulates the concept of developmental ecology-those interrelated features of a child's proximal environment that shape development and health. Developmental ecology links structural and demographic factors with interactional, psychological, and genetic factors...
December 2016: Demography
https://www.readbyqxmd.com/read/27873065/decline-in-territory-size-and-fecundity-as-a-response-to-carrying-capacity-in-an-endangered-songbird
#18
Stefanie A Hartmann, Steffen Oppel, Gernot Segelbacher, Mery E Juiña, H Martin Schaefer
Density-dependent processes are fundamental mechanisms for the regulation of populations. Ecological theories differ in their predictions on whether increasing population density leads to individual adjustments of survival and reproductive output or to dominance and monopolization of resources. Here, we use a natural experiment to examine which factors limit population growth in the only remaining population of the endangered pale-headed brush finch (Atlapetes pallidiceps). For three distinct phases (a phase of population suppression, 2001-2002; expansion due to conservation management, 2003-2008; and equilibrium phase, 2009-2014), we estimated demographic parameters with an integrated population model using population size, the proportion of successfully breeding pairs and their productivity, territory size, and mark-recapture data of adult birds...
November 21, 2016: Oecologia
https://www.readbyqxmd.com/read/27870213/unexpected-sex-specific-post-reproductive-lifespan-in-the-free-living-nematode-pristionchus-exspectatus
#19
Cameron J Weadick, Ralf J Sommer
Patterns of senescence (or aging) can vary among life history traits and between the sexes, providing an opportunity to study variation in the aging process within a single species. We previously found that females of the nematode Pristionchus exspectatus outlive males by a substantial margin under laboratory conditions. Here, we show that sex-specific reproductive senescence unfolds in the opposite direction in this species, resulting in a prolonged period of female-specific post-reproductive survival: females lost the ability to reproduce at approximately 4...
December 2016: Evolution & Development
https://www.readbyqxmd.com/read/27870052/early-warning-of-critical-transitions-in-biodiversity-from-compositional-disorder
#20
C Patrick Doncaster, Vasthi Alonso Chávez, Clément Viguier, Rong Wang, Enlou Zhang, Xuhui Dong, John A Dearing, Peter G Langdon, James G Dyke
Global environmental change presents a clear need for improved leading indicators of critical transitions, especially those that can be generated from compositional data and that work in empirical cases. Ecological theory of community dynamics under environmental forcing predicts an early replacement of slowly replicating and weakly competitive "canary" species by slowly replicating but strongly competitive "keystone" species. Further forcing leads to the eventual collapse of the keystone species as they are replaced by weakly competitive but fast-replicating "weedy" species in a critical transition to a significantly different state...
November 2016: Ecology
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