Results 91 to 100 of about 1,512,265 (335)

A wolf in fox's clothing? Using stable isotopes to quantify ecological replacement

open access: yesConservation Letters, 2021
Ecological replacement as a conservation tool presupposes that nonnative taxa can restore degraded ecosystems by performing the ecological functions of extinct taxa.
T. J. Clark   +4 more
doaj   +1 more source

The Role of Legal Services in the Antipoverty Program [PDF]

open access: yes, 1966
Large-scale adaptive radiations might explain the runaway success of a minority of extant vertebrate clades. This hypothesis predicts, among other things, rapid rates of morphological evolution during the early history of major groups, as lineages invade
Benson, Roger B. J.   +6 more
core   +6 more sources

Multi‐Enzyme Mimetic Molybdenum Nitride Nanozymes Reshape Subgingival Microenvironment for Synergistic Periodontitis Therapy via ROS Regulation and Microbiome Remodeling

open access: yesAdvanced Science, EarlyView.
ABSTRACT Periodontitis, a chronic inflammatory disease initiated and sustained by plaque microorganisms and host immune response, remains an intractable oral disease and a leading cause of tooth loss worldwide. Traditional mechanical debridement and adjunctive antibiotic or antiseptic therapy often shows limited efficacy due to the complex anatomical ...
Weiyu Zhang   +12 more
wiley   +1 more source

a variational approach to niche construction [PDF]

open access: yes, 2018
In evolutionary biology, niche construction is sometimes described as a genuine evolutionary process whereby organisms, through their activities and regulatory mechanisms, modify their environment such as to steer their own evolutionary trajectory, and ...
Campbell, John   +4 more
core   +2 more sources

Gut Lactate Boosts Ruminococcus via Histone Lactylation to Mediate Time‐Restricted Feeding Protection in Crohn's Disease

open access: yesAdvanced Science, EarlyView.
TRF enriches Ruminococcus, a bacterial genus producing SCFAs, and activates the epithelial HIF‐1α signaling pathway. This mechanism protects the colonic mucosa from inflammatory insults in colitis models. Mechanistically, gut lactate production during starvation and refeeding mediates H4K12la, which increases SLC9A3 expression and creates an acidic gut
Linwen Huang   +17 more
wiley   +1 more source

Advances and Limitations of Disease Biogeography Using Ecological Niche Modeling

open access: yesFrontiers in Microbiology, 2016
Mapping disease transmission risk is crucial in public and animal health for evidence based decision-making. Ecology and epidemiology are highly related disciplines that may contribute to improvements in mapping disease, which can be used to answer ...
Luis E Escobar   +2 more
doaj   +1 more source

How Gaussian competition leads to lumpy or uniform species distributions [PDF]

open access: yes, 2009
A central model in theoretical ecology considers the competition of a range of species for a broad spectrum of resources. Recent studies have shown that essentially two different outcomes are possible. Either the species surviving competition are more or
A Sasaki   +32 more
core   +2 more sources

Epigenetics of ecological niches

open access: yesEcological genetics, 2010
The development of symbioses ensures formation of the super-organism systems for heredity (symbiogenomes) which represent the products of joint adaptations of partners towards an unfavorable environment. Using the examples of symbioses which enable plants and microorganisms to cooperatively overcome the limitations in the major biogenic elements (C, N,
Igor A Tikhonovich, Nikolay A Provorov
openaire   +2 more sources

Modelling species presence–absence in the ecological niche theory framework using shape-constrained generalized additive models

open access: yes, 2020
According to ecological niche theory, species response curves are unimodal with respect to environmental gradients. A variety of statistical methods have been developed for species distribution modelling.
L. Citores   +5 more
semanticscholar   +1 more source

Diversity of Pharmaceuticals Enhances Antibiotic Resistance in the Invertebrate Gut via Biofilm‐Mediated Mechanisms

open access: yesAdvanced Science, EarlyView.
Pharmaceutical diversity acts as an independent driver of antibiotic resistance in soil invertebrates. While bulk soil remains unaffected, the collembolan gut microbiome exhibits significant resistance gene enrichment under complex chemical exposure and diurnal warming.
Yi‐Fei Wang   +11 more
wiley   +1 more source

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