Results 31 to 40 of about 5,736,003 (306)

Primary production assessment of the Southern Indian Ocean in consumption of silicic acid

Український антарктичний журнал, 2020
Estimation of the primary productivity (PP) for the area of the Southern Indian Ocean has been made on the base of assessment of interannual variability in concentration of silicic acid in the euphotic layer.
A.T. Kochergin
doaj   +1 more source

Phosphorus Cycle and Primary Productivity Changes in the Tethys Ocean During the Permian-Triassic Transition: Starving Marine Ecosystems

Frontiers in Earth Science, 2022
The ultimate cause(s) of the end-Permian mass extinction (∼252 Ma ago) has been disputed. A complex interplay of various effects, rather than a single, universal killing mechanism, were most likely involved.
Johann Müller, Yadong Sun, Fen Yang, Alicia Fantasia, Michael Joachimski   +4 more
doaj   +1 more source

Scaling Global Warming Impacts on Ocean Ecosystems: Lessons From a Suite of Earth System Models

Frontiers in Marine Science, 2020
An important technique used by climate modelers to isolate the impacts of increasing greenhouse gasses on Earth System processes is to simulate the impact of an abrupt increase in carbon dioxide.
Alexis Bahl, Anand Gnanadesikan, Marie-Aude S. Pradal   +2 more
doaj   +1 more source

Using visible reflectance spectroscopy to reconstruct historical changes in chlorophyll a concentration in East Antarctic ponds

Polar Research, 2013
The visible reflectance spectroscopy (VRS) and chlorophyll a concentration were determined in three sediment profiles collected from East Antarctica to investigate the potential application of VRS in reconstructing historical changes in Antarctic lake ...
Qianqian Chen, Xiaodong Liu, Yaguang Nie, Liguang Sun   +3 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

Primary productivity in the FLEX box, North Sea (Table 1)

, 1980
Primary productivity in the FLEX box, North Sea (Table ...
Kraay, Gijsbert W, Gieskes, W W C, W W C Gieskes (7906151), Gijsbert W Kraay (7906154)   +3 more
core   +1 more source

Engineering peptides into antibodies—opportunities and strategies for therapeutic innovation

FEBS Letters, EarlyView.
Peptides and antibodies occupy complementary therapeutic niches. Peptides recognize difficult targets in a compact format, while antibodies add specificity, long half‐life, and effector functions. This review examines strategies that merge both modalities—peptide grafting into loops, terminal and Fc fusions, and bioconjugation—highlighting how ...
Jinling Wang, Ruslana Romaniuk, Hristo L. Svilenov   +2 more
wiley   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

Experimental Warming and Short‐Term Nutrient Effects on Nearshore Periphyton Metabolism in a Large, Oligotrophic Lake

Water Resources Research
Periphyton blooms may be increasing in oligotrophic lakes due to warming water temperatures and increased nutrient loads associated with climate change.
Nicholas T. Framsted, Adrianne P. Smits, Steven Sadro   +2 more
doaj   +1 more source

Patterns and Drivers of Change in the Normalized Difference Vegetation Index in Nunavik (Québec, Canada) over the Period 1984–2020

Atmosphere, 2023
Altered temperature and precipitation regimes associated with climate change generally result in improved conditions for plant growth. For Arctic and sub-Arctic ecosystems, this new climatic context promotes an increase in primary productivity, a ...
Anna Gaspard, Martin Simard, Stéphane Boudreau   +2 more
doaj   +1 more source