Results 21 to 30 of about 8,901,945 (306)

Phylogeny, Seed Trait, and Ecological Correlates of Seed Germination at the Community Level in a Degraded Sandy Grassland

Frontiers in Plant Science, 2016
Seed germination strongly affects plant population growth and persistence, and it can be dramatically influenced by phylogeny, seed traits, and ecological factors.
Zhengning Wang, Zhengning Wang, Lixin Wang, Zhimin Liu, Yanjuan Li, Yanjuan Li, Qingqing Liu, Qingqing Liu, Bo Liu, Bo Liu   +9 more
doaj   +1 more source

Leaf Nitrogen and Phosphorus Stoichiometry and Its Response to Geographical and Climatic Factors in a Tropical Region: Evidence from Hainan Island

Agronomy, 2023
Leaf stoichiometry effectively indicates the response and adaptation of plants to environmental changes. Although numerous studies on leaf stoichiometry patterns have focused on the mid-latitudes and specific species of plants, these patterns and the ...
Jingjing Wang, Yongyi Liang, Guoan Wang, Xiaoyan Lin, Jiexi Liu, Hao Wang, Zixun Chen, Bingsun Wu   +7 more
doaj   +1 more source

Hachimoji DNA and RNA: A genetic system with eight building blocks [PDF]

, 2019
Reported here are DNA and RNA-like systems built from eight (hachi-) nucleotide letters (-moji) that form four orthogonal pairs. This synthetic genetic biopolymer meets the structural requirements needed to support Darwinism, including a polyelectrolyte ...
Bates, Alison M., Benner, Steven A., DasGupta, Saurja, Ellington, Andrew D., Georgiadis, Millie M., Hoshika, Shuichi, Karalkar, Nilesh B., Kim, Hyo-Joong, Kim, Myong-Jung, Kim, Myong-Sang, Leal, Nicole A., Meyer, Adam J., Piccirilli, Joseph A., SantaLucia, Holly A., SantaLucia, John, Jr., Watkins, Norman E., Jr.   +15 more
core   +1 more source

A day’s time: the one-day novel and the temporality of the everyday [PDF]

, 2016
This essay presents an investigation of the one-day-ness of the one-day novel—to ask what the effects of this temporal frame, in literary form, might be.
Randall, Bryony
core   +1 more source

Turnover of Plant Species on an Ecological Gradient in Karst Dolines Is Reflected in Plant Traits: Chorotypes, Life Forms, Plant Architecture and Strategies

Diversity, 2022
We analyzed plants and their traits in dolines, which are characteristic enclosed terrain depressions on carbonate (karst) plateaus. These landforms range from a few meters to over 100 m in diameter, their depth generally varying from a few meters to a ...
Aljaž Jakob, Mateja Breg Valjavec, Andraž Čarni   +2 more
doaj   +1 more source

Estudo florístico do componente herbáceo e relação com solos em áreas de caatinga do embasamento cristalino e bacia sedimentar, Petrolândia, PE, Brasil Herbaceous floristic study and relationship with soil of crystalline shield and sedimentary basin caatinga areas at Petrolândia, Pernambuco State, Brazil

Acta Botânica Brasílica, 2009
Realizou-se um levantamento florístico em áreas de caatinga do embasamento cristalino e de bacia sedimentar, em Petrolândia, Pernambuco, objetivando-se identificar diferenças na composição, hábito e forma de vida das herbáceas entre as duas áreas.
Kleber Andrade da Silva, Elcida de Lima Araújo, Elba Maria Nogueira Ferraz   +2 more
doaj   +1 more source

Beetles of the family Heteroceridae (Insecta: Coleoptera) in extreme environments

Трансформация экосистем, 2020
Heterocerid beetles (Heteroceridae) are morphologically and ecologically uniform (all members of the family are burrowing stratobionts). Nevertheless, some groups are obviously in an active and dynamic stage of evolution, and some species have a high ...
Alexey S. Sazhnev
doaj   +1 more source

Genetic correlations among protein yield, productive life, and type traits from the United States and diseases other than mastitis from Denmark and Sweden [PDF]

, 1999
Sire genetic evaluations for protein yield, productive life, and selected type traits from the US were correlated with sire evaluations for disease from Denmark and Sweden and were then adjusted to approximate genetic correlations.
Banos, G, Rogers, GW, Sander-Nielsen, U
core   +1 more source

Statistical physics and stromatolite growth: new perspectives on an ancient dilemma

, 2004
This paper outlines our recent attempts to model the growth and form of microbialites from the perspective of the statistical physics of evolving surfaces. Microbialites arise from the environmental interactions of microbial communities (microbial mats).
Arp, B.I. Henry, Barabási, Batchelor, Batchelor, Batchelor, Bertrand-Sarfati, Brasier, Burne, Cohen, Garcia-Ruiz, Grotzinger, Grotzinger, Hofmann, Kardar, Knoll, Komar, Lobkovsky, Logan, Lowe, M.T. Batchelor, R.V. Burne, Schopf, Sheehan, T. Slatyer, Walter   +25 more
core   +1 more source

An experimental investigation of chatter effects on tool life [PDF]

, 2009
Tool wear is one of the most important considerations in machining operations as it affects surface quality and integrity, productivity and cost. The most commonly used model for tool life analysis is the one proposed by F.W.
Altintas Y., Armarego E. J., E Budak, Koenigsberger F., Kronenberg M., M Kayhan, Stephenson D. A., Taylor F. W., Tlusty J., Tlusty J., Tobias S. A., Trent E. M.   +11 more
core   +1 more source