Results 111 to 120 of about 105,447 (290)

The impacts of biological invasions

Biological Reviews, EarlyView.
ABSTRACT The Anthropocene is characterised by a continuous human‐mediated reshuffling of the distributions of species globally. Both intentional and unintentional introductions have resulted in numerous species being translocated beyond their native ranges, often leading to their establishment and subsequent spread – a process referred to as biological
Phillip J. Haubrock, Teun Everts, Neil Angelo S. Abreo, Jamie Bojko, Victor Deklerck, James W. E. Dickey, Ana Clara S. Franco, Emili García‐Berthou, Stelios Katsanevakis, Natalia I. Kirichenko, Stefano Mammola, Martin A. Nuñez, Ben Parker, Riccardo Scalera, Ismael Soto, Diederik Strubbe, Ali Serhan Tarkan, Lorenzo Vilizzi, Tim Adriaens, Paride Balzani, Dagmara Błońska, Elizabeta Briski, Rein Brys, Amy L. Burgess, James E. Byers, Carlos Cano‐Barbacil, Giuseppe Castaldelli, Jaimie T.A. Dick, Victoria Dominguez Almela, Romina D. Dimarco, Margarita Florencio, Antonín Kouba, Melina Kourantidou, Irmak Kurtul, Irene Martín‐Forés, Olivier Morissette, Julian D. Olden, Bruno E. Soares, Jakub Truszkowski, Hugo Verreycken, Marc Kenis, Ronaldo Sousa, J. Robert Britton   +42 more
wiley   +1 more source

Identification coral reef diatom using scanning electron microscope at Nature Reserve Pulau Sempu (NRPS), East Java

Depik Jurnal
Diatom, Bacillariophyceae, has an important role in environmental support because these algae contribute to 25% of the oxygen supply globally and each year represent 40% of primary production by fixed carbon using photosynthesis.
Sayyid Afdhal El Rahimi, Adryan Kryk, Sulastri Arsad, Oktiyas Muzaky Luthfi, Andik Isdianto, M. Azurea Bahri Luthfi   +5 more
doaj   +1 more source

Structure of feeding for Echinarachnius parma and Scaphechinus mirabilis (Echinoidea, Clypeasteroida) in the Troitsa Bay, Japan Sea

Известия ТИНРО, 2014
Feeding of sand dollars Echinarachnius parma and Scaphechinus mirabilis (Clypeasteroida) in the Troitsa Bay, Japan Sea is investigated. Both species dwell on coarse bottom sand with the percentage of fine fraction (< 0.2 mm) no more than 3 %. Diatoms are
Andrey A. Begun, Yury N. Elkin, Sergey O. Maximov, Ludmila S. Belogurova, Alexander А. Artyukov   +4 more
doaj   +1 more source

Diatomic Gasdynamic Lasers [PDF]

The Physics of Fluids, 1972
Predictions from a numerical model of the vibrational relaxation of anharmonic diatomic oscillators in supersonic expansions are used to show the extent to which the small anharmonicity of gases like CO can cause significant overpopulations of upper vibrational states.
openaire   +1 more source

Fear of grazing rivals the toxin‐inducing effects of nutrients in two marine harmful algae – a meta‐analysis

Biological Reviews, EarlyView.
ABSTRACT One of the major subfields of chemical ecology is the study of toxins and how they mediate interactions between organisms. Toxins produced by harmful algae (phycotoxins) impact a wide variety of organisms connected to the marine food web. Significant research efforts have thus aimed to identify the ecological and evolutionary drivers behind ...
Milad Pourdanandeh, Erik Selander
wiley   +1 more source

Light-dependent single-cell heterogeneity in the chloroplast redox state regulates cell fate in a marine diatom

eLife, 2019
Diatoms are photosynthetic microorganisms of great ecological and biogeochemical importance, forming vast blooms in aquatic ecosystems. However, we are still lacking fundamental understanding of how individual cells sense and respond to diverse stress ...
Avia Mizrachi, Shiri Graff van Creveld, Orr H Shapiro, Shilo Rosenwasser, Assaf Vardi   +4 more
doaj   +1 more source

Carbon‐Supported Dual‐Nickel Atom Catalysts With Stabilized Ni─N3 Active Sites for Efficient CO2 Electroreduction

Carbon Energy, EarlyView.
Dual‐nickel atom catalysts (Ni‐DACs) are developed to stabilize unsaturated Ni─N3 atomic sites by constructing N3Ni─NiN3 dual‐atom structures from coal. Benefiting from the modulated electronic structure that optimizes intermediate adsorption, Ni‐DACs outperform Ni‐SACs in CO2 electroreduction, achieving a max FECO of 98.6% at −0.8 V vs RHE and a TOF ...
Jiabao Niu, Hongqiang Li, Yong Li, Dedong Jia, Neng Chen, Hongmei Li, Min Liu, Jieshan Qiu, Xiaojun He   +8 more
wiley   +1 more source

Satellite Observations Reveal Declining Diatom Concentrations in the Three Gorges Reservoir: The Impacts of Dam Construction and Local Climate

Remote Sensing
An effective satellite observation system is developed to retrieve the diatom concentration in freshwater ecosystems that could be utilized for understanding aquatic biogeochemical cycles.
Menglan Gan, Lei Feng, Jingan Shao, Li Feng, Yao Wang, Meiling Liu, Ling Wu, Botian Zhou   +7 more
doaj   +1 more source

The distribution of cytoplasmic microtubules throughout the cell cycle of the centric diatom Stephanopyxis turris: their role in nuclear migration and positioning the mitotic spindle during cytokinesis. [PDF]

, 1986
The cell cycle of the marine centric diatom Stephanopyxis turris consists of a series of spatially and temporally well-ordered events. We have used immunofluorescence microscopy to examine the role of cytoplasmic microtubules in these events.
Cande, WZ, McDonald, KL, Wordeman, L
core  

Rate constant calculations on fast diatom–diatom reactions

J. Chem. Soc., Faraday Trans., 1991
A new method for calculating rate constants for fast reactions between two diatomic molecules is presented. The method involves applying a rotationally adiabatic capture theory with a simultaneous treatment of the rotational motions of both molecules. Results from calculations for dipole–dipole (SO + OH) and dipole–quadrupole (CN + O2) interactions are
Stoecklin, T, Dateo, C, Clary, D
openaire   +2 more sources