Results 71 to 80 of about 67,680 (299)

Ontogenetic dietary variation and niche partitioning in Bothrops moojeni across a Cerrado–Amazon ecotone [PDF]

open access: yesBrazilian Journal of Biology
We investigated ontogenetic dietary variation and trophic niche partitioning in Bothrops moojeni, a Neotropical pitviper inhabiting an ecotone between the Cerrado savanna and the Amazon rainforest in Mid-North Mato Grosso, Brazil.
D. J. Silva   +7 more
doaj   +1 more source

Niches, rather than neutrality, structure a grassland pioneer guild [PDF]

open access: yes, 2005
Pioneer species are fast-growing, short-lived gap exploiters. They are prime candidates for neutral dynamics because they contain ecologically similar species whose low adult density is likely to cause widespread recruitment limitation, which slows ...
Grubb P.J   +3 more
core   +2 more sources

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Oribatid mites reveal that competition for resources and trophic structure combine to regulate the assembly of diverse soil animal communities

open access: yesEcology and Evolution, 2019
The role of niche partitioning in structuring species‐rich soil animal communities has been debated for decades and generated the “enigma of soil animal diversity.” More recently, resource‐based niche partitioning has been hypothesized to play a very ...
Matthew Magilton   +3 more
doaj   +1 more source

Hydrothermal activity lowers trophic diversity in Antarctic sedimented hydrothermal vents [PDF]

open access: yes, 2016
Sedimented hydrothermal vents are those in which hydrothermal fluid vents through sediment and are among the least studied deep-sea ecosystems. We present a combination of microbial and biochemical data to assess trophodynamics between and within ...
Bell, James B.   +6 more
core   +1 more source

Intra-specific Niche Partitioning in Antarctic Fur Seals, Arctocephalus gazella [PDF]

open access: yesScientific Reports, 2020
AbstractCompetition for resources within a population can lead to niche partitioning between sexes, throughout ontogeny and among individuals, allowing con-specifics to co-exist. We aimed to quantify such partitioning in Antarctic fur seals, Arctocephalus gazella, breeding at South Georgia, which hosts ~95% of the world’s population.
Jones, Kayleigh   +7 more
openaire   +5 more sources

Class IIa HDACs forced degradation allows resensitization of oxaliplatin‐resistant FBXW7‐mutated colorectal cancer

open access: yesMolecular Oncology, EarlyView.
HDAC4 is degraded by the E3 ligase FBXW7. In colorectal cancer, FBXW7 mutations prevent HDAC4 degradation, leading to oxaliplatin resistance. Forced degradation of HDAC4 using a PROTAC compound restores drug sensitivity by resetting the super‐enhancer landscape, reprogramming the epigenetic state of FBXW7‐mutated cells to resemble oxaliplatin ...
Vanessa Tolotto   +13 more
wiley   +1 more source

Trophic niche similarities of sympatric Turdus thrushes determined by fecal contents, stable isotopes, and bipartite network approaches

open access: yesEcology and Evolution, 2020
An ecological niche has been defined as an n‐dimensional hypervolume formed by conditions and resources that species need to survive, grow, and reproduce.
Camila Bosenbecker, Leandro Bugoni
doaj   +1 more source

Seasonal Niche Partitioning of Surface Temperate Open Ocean Prokaryotic Communities [PDF]

open access: yesFrontiers in Microbiology, 2020
Surface microbial communities are exposed to seasonally changing environmental conditions, resulting in recurring patterns of community composition. However, knowledge on temporal dynamics of open ocean microbial communities remains scarce. Seasonal patterns and associations of taxa and oligotypes from surface and chlorophyll maximum layers in the ...
Mena, C. (Catalina)   +5 more
openaire   +6 more sources

Mycobacterial cell division arrest and smooth‐to‐rough envelope transition using CRISPRi‐mediated genetic repression systems

open access: yesFEBS Open Bio, EarlyView.
CRISPRI‐mediated gene silencing and phenotypic exploration in nontuberculous mycobacteria. In this Research Protocol, we describe approaches to control, monitor, and quantitatively assess CRISPRI‐mediated gene silencing in M. smegmatis and M. abscessus model organisms.
Vanessa Point   +7 more
wiley   +1 more source

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