Results 41 to 50 of about 2,353 (151)

Phytoplankton growth and potential cyanotoxin production differ in response to nitrogen and phosphorus amendments in late summer communities from Kabetogama Lake (Minnesota, United States)

Journal of Phycology, Volume 62, Issue 3, Page 883-903, June 2026.
Abstract Cyanotoxins such as microcystin (MC), cylindrospermopsin, and saxitoxin are secondary metabolites that are rich in nitrogen (N). Most cyanobacteria grow best on reduced inorganic N (ammonium, NH4), but when NH4 is absent, cyanobacteria can activate physiological pathways to process other N forms (e.g., nitrate; NO3).
James H. Larson, Ryan P. Maki, Sean W. Bailey, Victoria G. Christensen, Keith A. Loftin, Erin A. Stelzer, James C. Smith, Seth A. McWhorter   +7 more
wiley   +1 more source

Microbial mats and thalassinid shrimp: Spatial and geochemical interactions in a modern intertidal environment

Sedimentology, Volume 73, Issue 4, Page 1001-1029, June 2026.
ABSTRACT This research examines the spatial and geochemical interactions between mat‐forming microorganisms and thalassinid shrimp in an intertidal flat situated on the shores of Willapa Bay, Washington, USA. The study serves as a contemporary analog for the relationships between mats and burrowing organisms in deep time.
Brette S. Harris, Sara K. Biddle, Maya T. LaGrange, Scott Melnyk, Cody N. Lazowski, Jenifer S. Spence, Daniel Alessi, Jeffrey Kavanaugh, Kurt O. Konhauser, Murray K. Gingras   +9 more
wiley   +1 more source

Assessment of Preservation and Extraction Methods for Environmental DNA in Sediments

Environmental DNA, Volume 8, Issue 3, May–June 2026.
We assessed how different preservation methods (freezing, room temperature, silica gel, Longmire buffer) affect eDNA metabarcoding results for bacterial, fungal, microeukaryotic, and metazoan communities in marine and freshwater sediments. Results demonstrate taxonomic‐ and habitat‐specific responses to preservation methods, providing evidence‐based ...
Alessia Guerrieri, Camille Sessegolo, Héloïse Archambeau, Marie Pierron, Thomas Merzi, Eva Bellemain, Aurélie Bonin   +6 more
wiley   +1 more source

From Nest Box to Neighborhood: Patterns of Island Biodiversity Characterized Through eDNA From Little Blue Penguin (Eudyptula minor) Nest Boxes

Environmental DNA, Volume 8, Issue 3, May–June 2026.
There are many environmental DNA (eDNA) sources within and around a seabird nest. These DNA traces from soil, plant material, feathers, feces, and other nest components enable detection of a wide range of taxa, including plants, fungi, insects, arachnids, mollusks, reptiles, and other vertebrates. Here, we used DNA from nest box feces to obtain signals
Ashleigh Stanners, Angela McGaughran
wiley   +1 more source

Relationship between the carbonate system and phytoplankton community in the Gulf of Guinea-Africa

Frontiers in Marine Science
We carried out measurements of the CO2 system parameters to evaluate the impact of carbonate and nutrients’ chemistry on phytoplankton populations in the Gulf of Guinea (GoG).
Kouakou Urbain Koffi, Estelle Severine Konan, Abed EI Rahman Hassoun, Abed EI Rahman Hassoun, Yves Kouadio   +4 more
doaj   +1 more source

Coscinodiscophyceae, Fragilariophyceae e Bacillariophyceae (Achnanthales) dos rios Ivaí, São João e dos Patos, bacia hidrográfica do rio Ivaí, município de Prudentópolis, PR, Brasil Coscinodiscophyceae, Fragilariophyceae and Bacillariophyceae (Achnanthales) of the Ivaí, São João and Patos rivers in the Ivaí basin, Prudentópolis, Paraná State, Brazil

Acta Botânica Brasílica, 2007
Realizou-se o levantamento florístico das Coscinodiscophyceae, Fragilariophyceae e Bacillariophyceae (Achnanthales) dos rios Ivaí, São João e dos Patos, pertencentes à bacia hidrográfica do rio Ivaí, município de Prudentópolis, Paraná.
Fernanda Ferrari, Thelma Alvim Veiga Ludwig   +1 more
doaj   +1 more source

Metabarcoding of Sediment eDNA Uncovers Ecological Gradients and Biodiversity in Philippine Mangroves

Environmental DNA, Volume 8, Issue 3, May–June 2026.
Community diversity metrics revealed a clear ecological gradient, with the highest diversity observed in recolonized mature stands, intermediate in the natural stands, and lowest in the restored stands. Taxonomic profiles varied with mangrove stand, age, and zonation.
Severino G. Salmo III, Arizaldo E. Castro, Kenneth Angelo Bagay, Marie Christine M. Obusan   +3 more
wiley   +1 more source

Seasonal differences and potential biological drivers of the methane paradox in two peri‐Alpine lakes

Limnology and Oceanography Letters, Volume 11, Issue 3, May 2026.
Abstract Seasonal variations and the biological drivers underlying the methane paradox in freshwater lakes are poorly understood. Here, we investigated the relationship between subsurface methane inventories and phytoplankton in two peri‐Alpine lakes across different seasons.
Niharika Sharma, Manuela Felsberger, Zeynep Kurt, Markus Möst, Barbara Bayer   +4 more
wiley   +1 more source

Diatomáceas perifíticas dos arroios Sampaio e Sampainho, Rio Grande do Sul, Brasil Periphitic diatoms from Sampaio and Sampainho streams, Rio Grande do Sul, Brazil

Acta Botânica Brasílica, 2002
Estudo taxonômico de diatomáceas perifíticas em substrato artificial (fio de poliamida) foi realizado nos arroios Sampaio e Sampainho, localizados na Depressão Central do Estado do Rio Grande do Sul.
Maria Angélica Oliveira, Lezilda Carvalho Torgan, Silvana Corrêa Rodrigues   +2 more
doaj   +1 more source

18S rDNA sequences from microeukaryotes reveal oil indicators in mangrove sediment. [PDF]

PLoS ONE, 2010
BackgroundMicroeukaryotes are an effective indicator of the presence of environmental contaminants. However, the characterisation of these organisms by conventional tools is often inefficient, and recent molecular studies have revealed a great diversity ...
Henrique F Santos, Juliano C Cury, Flavia L Carmo, Alexandre S Rosado, Raquel S Peixoto   +4 more
doaj   +1 more source