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Predicting occupancy and abundance by niche position, niche breadth and body size in stream organisms [PDF]
Oecologia, 2017 The regional occupancy and local abundance of species are thought to be strongly correlated to their body size, niche breadth and niche position. The strength of the relationships among these variables can also differ between different organismal groups.
Mariana P. Rocha +7 more
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Spindle positioning in the stem cell niche [PDF]
WIREs Developmental Biology, 2011 AbstractStem cells are the source of differentiated cells that constitute tissues and organs. Two fundamental characteristics of stem cells are their abilities to self‐renew stem cell identity and to produce differentiated cells, the balance of which can be achieved by asymmetric stem cell division.
Yadlapalli, Swathi, Yamashita, Yukiko M.
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The Role of Gram-Positive Surface Proteins in Bacterial Niche- and Host-Specialization [PDF]
Frontiers in Microbiology, 2020 Gram-positive bacterial pathogens have an array of proteins on their cell surface that mediate interactions with the host environment. In particular, bacterial cell wall-associated (CWA) proteins play key roles in both colonization and pathogenesis.
Pickering, Amy +1 more
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Evidence for a single-niche model of positive selection. [PDF]
Proceedings of the National Academy of Sciences, 1994 Thymocyte maturation depends on interactions with thymic stromal elements expressing major histocompatibility complex (MHC) molecules. Mutant mouse strains lacking MHC class I (beta 2-microglobulin-null) or class II (A beta-null) expression fail to generate normal CD8 or CD4 T-cell populations and provide model systems for reconstitution experiments ...
Merkenschlager, Matthias +2 more
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Trophic Niches, Trophic Positions, and Niche Overlaps between Non-Native and Native Fish Species in a Subalpine Lake [PDF]
Water, 2020 In the last century, Italian freshwater ecosystems have been invaded by several non-native fish species. In the subalpine Lake Mergozzo (northern Italy), several recently introduced non-native species dramatically expanded their populations. We used carbon and nitrogen stable isotopes to describe the isotopic niches and trophic positions of native and ...
Cicala +12 more
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Stage-specific control of niche positioning and integrity in the Drosophila testis [PDF]
Mechanisms of Development, 2015 A fundamental question is how complex structures are maintained after their initial specification. Stem cells reside in a specialized microenvironment, called niche, which provides essential signals controlling stem cell behavior. We addressed this question by studying the Drosophila male stem cell niche, called the hub.
Schardt, L. +3 more
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The Role of Pleiotropy in the Evolutionary Maintenance of Positive Niche Construction
The American Naturalist, 2018 Organisms often modify their environments to their advantage through a process of niche construction. Environments that are improved through positive niche construction can be viewed as a public good. If free riders appear that do not contribute to the shared resource and therefore do not incur any associated costs, the constructed niche may become ...
Chisholm, RH +3 more
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Positive interactions in ecology: filling the fundamental niche
Ideas in Ecology and Evolution, 2012 The role of negative interactions in shaping ecological communities and the realized niches of species has been a focus of considerable research for at least decades. Traditionally, the discrepancy between the size of the fundamental and realized niche of a species was attributed to the effect of negative interactions, such that the realized niche is ...
Mariano A. Rodriguez-Cabal +2 more
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An epidermis-driven mechanism positions and scales stem cell niches in plants [PDF]
Science Advances, 2016 An epidermis control of plant shoot stem cells can explain the scaling and position of the niche expression domains.
Gruel, Jérémy +8 more
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Acta Tropica, 2017 For several years, the wild populations of Triatoma infestans, main vector of Trypanosoma cruzi causing Chagas disease, have been considered or suspected of being a source of reinfestation of villages. The number of sites reported for the presence of wild T.
/Brenière, Simone Frédérique +6 more
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