Browse Articles

Meet the ‘Wee-rex’. Tiny tyrannosaur is its own species

Atoms and Bonds as Synergisms of Interacting Electrons and Nuclei. The Origin of Chemical Bonds in Polyatomic Molecules

Visualizing the Invisible: Dual Click Imaging of Ruthenium-Based Photoactivated Chemotherapy Agents and Their DNA Synthesis Inhibition in Fixed Cancer Cells

Highly Sensitive Detection of Tyrosine and Neurotransmitters by Stereoselective Biosynthesis and Photochemically Induced Dynamic Nuclear Polarization

Cobalt-Catalyzed Double Carbonylation of Cyclopropenes through a Stereodivergent β-Alkenyl Ketene Pathway

Ammonia-Assisted Photosynthesis of Ethylene Glycol

Nitrite Reduction at Low Overpotentials on N-Doped Carbon: When Metal Single Atoms Become Poisons

Structural and Mechanistic Insights into Bacterial Hydrazine Biosynthesis

Chemically Induced Ferroic-like Phase and Collective Chemotaxis in an Active Swarm

Metallo-coiled Coil Stabilization via Chemical Cross-Linking: Implications for Gd(III)-Based MRI Contrast Agents

Daily briefing: UK science is ‘bleeding to death’, says report

NO ₂ Adsorption on Oxygen-Modified Ag at Ambient Conditions

Control of CO ₂ Electrocatalysis via Modularly Customizable Graphdiyne

Polarization Engineering and Chemical Bond Reconstruction in Rare-Earth Hexagonal Manganite via Fe ³⁺ -Occupied B-Site Doping for Piezocatalytic Therapy and Ferroptosis

Total Synthesis of (+)-Resiniferatoxin via a Pyridinium Salt Photorearrangement

Correction to “Discovery and Mechanism of a Diiron Enzyme in Ethylidene Azetidine Formation”

0.5% Graphene Slashed 38.8 °C Supercooling in Plastic Crystals

Operando Cluster Catalysis via Coupled Surface–Subsurface Dynamics

Picoplankton nitrogen guilds in the tropical and subtropical oceans: From the surface to the deep

Ecological guilds quantify the incidence and extent of resource transformation functions, irrespective of the species involved. Therefore, tackling the microbial nitrogen guilds is key to our understanding of the oceanic nitrogen cycle, but quantitative estimates of guild contribution across varying depths and under specific environmental conditions have yet to be accomplished. In this study, we examine the main picoplankton guilds participating in nitrogen cycling within the low and mid-latitude ocean ecosystems, from the surface down to 4000 m, using data obtained from 75 samples belonging to 11 stations in the Malaspina dataset. In particular, we used a quantitative approach to investigate the stability of nitrogen acquisition and nitrogen-redox guilds separately. Our results showed that nitrogen acquisition guilds are more stable and redundant than nitrogen-redox guilds across depths and site specific conditions. For example, differential conditions such as nitrogen depletion and oxygen availability affected the two groups of guilds in different ways. These findings have implications for the understanding of global nitrogen fluxes and the biosphere’s functional diversification.

Best practice guidance for recreational and professional drones near colonial breeding birds

Drone use has increased sharply worldwide over the past decade, leading to more frequent interactions with wildlife. The rapid advancement of drones for ecological monitoring and research has further contributed to these encounters, which may disturb animal behavior, such as triggering flight responses in birds. Therefore, best-practice guidelines are urgently needed to help operators and site managers minimize disturbances. This study aimed to establish safe operating distances for seven common colonial breeding bird species: black-headed gull ( Chroicocephalus ridibundus ), herring gull ( Larus argentatus ), lesser black-backed gull ( Larus fuscus ), Sandwich tern ( Thalasseus sandvicensis ), common tern ( Sterna hirundo ), Eurasian spoonbill ( Platalea leucorodia ), and great cormorant ( Phalacrocorax carbo ). We assessed the effects of professional and consumer-grade drones flying at altitudes between 5 and 50 meters on the flight responses of these species at breeding sites in the Dutch Wadden Sea. Of 1492 drone flights, 7.4% caused disturbances, defined as more than 10% of birds becoming airborne. Flight initiation distance (FID), the distance between a bird and the drone at the moment of flight response, varied by species. Sandwich terns and common terns had the largest FID (>170 m), followed by black-headed gulls (>160 m), herring gulls and lesser black-backed gulls (>60 m), while great cormorants and Eurasian spoonbills had the shortest (~5 m). When selecting drone flight locations, we recommend considering species-specific FID and using the maximum diagonal FID as a guideline. Disturbance decreases with altitude, so flights should be conducted at 50 meters or higher whenever possible. These findings provide concrete guidelines to inform policy and promote the responsible use of drones in wildlife research and management.