ALBERT — All Library Books, journals and Electronic Records Telegrafenberg

Treffer pro Seite

Treffer 1 - 3 | 3 Treffer

Sortierung

Unbekannt

Long-term dynamics of adaptive evolution in a globally important coccolithophore to ocean acidification (2015)

Schlüter, Lothar ; Lohbeck, Kai T ; Gutowska, Magdalena A ; [weitere]

PANGAEA

In: Supplement to: Schlüter, Lothar; Lohbeck, Kai T; Gröger, Joachim P; Riebesell, Ulf; Reusch, Thorsten B H (2016): Long-term dynamics of adaptive evolution in a globally important phytoplankton species to ocean acidification. Science Advances, 2(7), e1501660-e1501660, https://doi.org/10.1126/sciadv.1501660

zur Merkliste hinzufügen auf der Merkliste

Details

Publikationsdatum: 2023-10-23

Beschreibung: Recent evolution experiments have revealed that marine phytoplankton may adapt to global change, for example to ocean warming or acidification. Long-term adaptation to novel environments is a dynamic process and phenotypic change can take place thousands of generations after exposure to novel conditions. Using the longest evolution experiment performed in any marine species to date (4 yrs, = 2100 generations), we show that in the coccolithophore Emiliania huxleyi, long-term adaptation to ocean acidification is complex and initial phenotypic responses may revert for important traits. While fitness increased continuously, calcification was restored within the first 500 generations but later reduced in response to selection, enhancing physiological declines of calcification in response to ocean acidification. Interestingly, calcification was not constitutively reduced but revealed rates similar to control treatments when transferred back to present-day CO2 conditions. Growth rate increased with time in controls and adaptation treatments, although the effect size of adaptation assessed through reciprocal assay experiments varied. Several trait changes were associated with selection for higher cell division rates under laboratory conditions, such as reduced cell size and lower particulate organic carbon content per cell. Our results show that phytoplankton may evolve phenotypic plasticity that can affect biogeochemically important traits, such as calcification, in an unforeseen way under future ocean conditions.

Schlagwort(e): BIOACID; Biological Impacts of Ocean Acidification

Materialart: Dataset

Format: application/zip, 3 datasets

Permalink

	Standort	Signatur	Erwartet	Verfügbarkeit

Andere fanden auch interessant ...

DATEN PANGAEA

S·F·X

Volltext

Unbekannt

Seawater carbonate chemistry and the growth rate of marine diatom Skeletonema marinoi (2015)

Scheinin, Matias ; Riebesell, Ulf ; Rynearson, T A ; [weitere]

PANGAEA

zur Merkliste hinzufügen auf der Merkliste

Details

Publikationsdatum: 2024-05-22

Beschreibung: Because of their large population sizes and rapid cell division rates, marine microbes have, or can generate, ample variation to fuel evolution over a few weeks or months, and subsequently have the potential to evolve in response to global change. Here we measure evolution in the marine diatom Skeletonema marinoi evolved in a natural plankton community in CO2-enriched mesocosms deployed in situ. Mesocosm enclosures are typically used to study how the species composition and biogeochemistry of marine communities respond to environmental shifts, but have not been used for experimental evolution to date. Using this approach, we detect a large evolutionary response to CO2 enrichment in a focal marine diatom, where population growth rate increased by 1.3-fold in high CO2-evolved lineages. This study opens an exciting new possibility of carrying out in situ evolution experiments to understand how marine microbial communities evolve in response to environmental change.

Schlagwort(e): Alkalinity, total; Aragonite saturation state; Bicarbonate ion; Biological sample; BIOS; Block; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chromista; Coast and continental shelf; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Gullmar_fjord_2013; Gullmar Fjord, Skagerrak, Sweden; Identification; Laboratory experiment; Mesocosm label; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Ochrophyta; Other studied parameter or process; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; Phosphate; Phytoplankton; Salinity; Silicate; Single species; Skeletonema marinoi; Species, unique identification; Species, unique identification (Semantic URI); Species, unique identification (URI); Temperate; Temperature, water; Time in hours; Treatment: partial pressure of carbon dioxide; Type

Materialart: Dataset

Format: text/tab-separated-values, 2058 data points

Permalink