Results 81 to 90 of about 37,941 (281)

Overlooked and widespread pennate diatom-diazotroph symbioses in the sea

Nature Communications, 2022
Nitrogen depletion in the ocean provides a favourable niche for nitrogen-fixing cyanobacteria, which can form symbioses with eukaryotic algae. This study reports the discovery of two distinct marine pennate diatom–diazotroph symbioses, which had ...
Christopher R. Schvarcz, Samuel T. Wilson, Mathieu Caffin, Rosalina Stancheva, Qian Li, Kendra A. Turk-Kubo, Angelicque E. White, David M. Karl, Jonathan P. Zehr, Grieg F. Steward   +9 more
doaj   +1 more source

Evaluating land–sea linkages using land cover change and coral reef monitoring data: A case study from northeastern Puerto Rico

Remote Sensing in Ecology and Conservation, EarlyView.
Land cover change that leads to increased nutrient and sediment runoff is an important driver of change in coral reef ecosystems. In this study, we combined satellite remote sensing and field monitoring to assess concomitant changes in watershed land cover and coral cover in northeastern Puerto Rico in 2000–2015.
Pirta Palola, Sasha Hills, Simon J. Pittman, Edwin A. Hernández‐Delgado, Antoine Collin, Lisa M. Wedding   +5 more
wiley   +1 more source

Photophysiological and photosynthetic complex changes during iron starvation in Synechocystis sp. PCC 6803 and Synechococcus elongatus PCC 7942

, 2013
Iron is an essential component in many protein complexes involved in photosynthesis, but environmental iron availability is often low as oxidized forms of iron are insoluble in water.
Fraser, J.M., Tulk, S.E., Cockshutt, A.M., Bibby, T.S., Campbell, D.A.   +4 more
core   +1 more source

Structure and functional genes associated with carbon, nitrogen, phosphorus, and sulfur cycling processes in periphyton: A comparison between natural and artificial rivers

River, EarlyView.
Network analysis of functional genes among prokaryotes, and eukaryotes in natural and artificial rivers. Abstract Periphyton in aquatic ecosystems plays vital roles in the elemental cycle process and is vulnerable to anthropogenic interference. However, few studies have explored the elemental cycles of carbon (C), nitrogen (N), phosphorus (P), and ...
Yulu Tian, Jiezhang Mo, Jiaxin Liu, Chenghao Li, Jiahua Guo   +4 more
wiley   +1 more source

The Chemistry, Biochemistry and Pharmacology of Marine Natural Products from Leptolyngbya, a Chemically Endowed Genus of Cyanobacteria

Marine Drugs, 2020
Leptolyngbya, a well-known genus of cyanobacteria, is found in various ecological habitats including marine, fresh water, swamps, and rice fields. Species of this genus are associated with many ecological phenomena such as nitrogen fixation, primary ...
Yueying Li, C. Benjamin Naman, Kelsey L. Alexander, Huashi Guan, William H. Gerwick   +4 more
doaj   +1 more source

Heterogeneity of alkane chain length in freshwater and marine cyanobacteria. [PDF]

Front Bioeng Biotechnol, 2015
The potential utilization of cyanobacteria for the biological production of alkanes represents an exceptional system for the next generation of biofuels. Here, we analyzed a diverse group of freshwater and marine cyanobacterial isolates from Indian culture collections for their ability to produce both alkanes and alkenes.
Shakeel T, Fatma Z, Fatma T, Yazdani SS.
europepmc   +5 more sources

Symbioses between cyanobacterial communities and feather mosses in boreal forests and consequences for dinitrogen fixation [PDF]

, 2013
Feather moss-cyanobacteria associations, although still poorly understood, are recognised as essential for the regulation of nitrogen (N) input into N-limited ecosystems such as boreal forests due to their ability to carry out N2-fixation.
Bay, Guillaume
core  

Nutrient enrichment destabilizes aquatic food webs through synchronization within and across trophic levels

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Nutrient enrichment destabilizes ecosystems globally, but the mechanistic pathways underlying this effect in multi‐trophic communities remain unclear. To address this knowledge gap, we applied biodiversity–stability theory to multi‐trophic communities by partitioning ...
Libin Zhou, Shaopeng Wang, Qi Yang, Pubin Hong, You Zhang, Maowei Liang, Peng Xing, Zhigang Mao, Biao Li, Erik Jeppesen, Martin Søndergaard, Liselotte S. Johansson, Qinglong Wu   +12 more
wiley   +1 more source

Isolation and structure determination of a new analog of polycavernosides from marine Okeania sp. cyanobacterium

Beilstein Journal of Organic Chemistry
Polycavernoside E (1), a new polycavernoside analog, was isolated from a marine Okeania sp. cyanobacterium. The relative configuration was elucidated primarily by analyzing the two dimensional nuclear magnetism resonance (2D NMR) data.
Kairi Umeda, Naoaki Kurisawa, Ghulam Jeelani, Tomoyoshi Nozaki, Kiyotake Suenaga, Arihiro Iwasaki   +5 more
doaj   +1 more source

Social organization and habitat use shape the gut microbiome of a marine fish

Journal of Animal Ecology, EarlyView.
This study provides the first evidence linking habitat use—and to a lesser extent social organization—to gut microbiome composition in a wild marine fish. The results indicate that local habitat conditions are the primary driver of microbial variation, while social effects are detectable but weak.
Aina Pons, Eneko Aspillaga, Ignacio A. Catalán, Tomeu Viver, Robert Arlinghaus, Martina Martorell‐Barceló, Margarida Barcelo‐Serra, Josep Alós   +7 more
wiley   +1 more source