Distribution and UV protection strategies of zooplankton in clear and glacier-fed alpine lakes

Abstract Zooplankton, a group of aquatic animals important as trophic link in the food web, are exposed to high levels of UV radiation (UVR) in clear alpine lakes, while in turbid glacier-fed lakes they are more protected. To study the interplay between behavioral and physiological protection respon...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Barbara Tartarotti, Florian Trattner, Daniel Remias, Nadine Saul, Christian E. W. Steinberg, Ruben Sommaruga
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/898fc4aeb57c495190dcbce090659d9f
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:898fc4aeb57c495190dcbce090659d9f
record_format	dspace
spelling	oai:doaj.org-article:898fc4aeb57c495190dcbce090659d9f2021-12-02T16:08:10ZDistribution and UV protection strategies of zooplankton in clear and glacier-fed alpine lakes10.1038/s41598-017-04836-w2045-2322https://doaj.org/article/898fc4aeb57c495190dcbce090659d9f2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04836-whttps://doaj.org/toc/2045-2322Abstract Zooplankton, a group of aquatic animals important as trophic link in the food web, are exposed to high levels of UV radiation (UVR) in clear alpine lakes, while in turbid glacier-fed lakes they are more protected. To study the interplay between behavioral and physiological protection responses in zooplankton from those lakes, we sampled six lakes of different UVR transparency and glacial turbidity. Copepods were absent in the upper water layers of the clearest lake, while in glacier-fed lakes they were more evenly distributed in the water column. Across all lakes, the weighted copepod mean depth was strongly related to food resources (chlorophyll a and rotifers), whereas in the fishless lakes, glacial turbidity largely explained the vertical daytime distribution of these organisms. Up to ~11-times (mean 3.5) higher concentrations of photo-protective compounds (mycosporine-like amino acids, MAAs) were found in the copepods from the clear than from the glacier-fed lakes. In contrast to carotenoid concentrations and antioxidant capacities, MAA levels were strongly related to the lake transparency. Copepods from alpine lakes rely on a combination of behavioral and physiological strategies adapted to the change in environmental conditions taking place when lakes shift from glacially turbid to clear conditions, as glacier retreat proceeds.Barbara TartarottiFlorian TrattnerDaniel RemiasNadine SaulChristian E. W. SteinbergRuben SommarugaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-14 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Barbara Tartarotti Florian Trattner Daniel Remias Nadine Saul Christian E. W. Steinberg Ruben Sommaruga Distribution and UV protection strategies of zooplankton in clear and glacier-fed alpine lakes
description	Abstract Zooplankton, a group of aquatic animals important as trophic link in the food web, are exposed to high levels of UV radiation (UVR) in clear alpine lakes, while in turbid glacier-fed lakes they are more protected. To study the interplay between behavioral and physiological protection responses in zooplankton from those lakes, we sampled six lakes of different UVR transparency and glacial turbidity. Copepods were absent in the upper water layers of the clearest lake, while in glacier-fed lakes they were more evenly distributed in the water column. Across all lakes, the weighted copepod mean depth was strongly related to food resources (chlorophyll a and rotifers), whereas in the fishless lakes, glacial turbidity largely explained the vertical daytime distribution of these organisms. Up to ~11-times (mean 3.5) higher concentrations of photo-protective compounds (mycosporine-like amino acids, MAAs) were found in the copepods from the clear than from the glacier-fed lakes. In contrast to carotenoid concentrations and antioxidant capacities, MAA levels were strongly related to the lake transparency. Copepods from alpine lakes rely on a combination of behavioral and physiological strategies adapted to the change in environmental conditions taking place when lakes shift from glacially turbid to clear conditions, as glacier retreat proceeds.
format	article
author	Barbara Tartarotti Florian Trattner Daniel Remias Nadine Saul Christian E. W. Steinberg Ruben Sommaruga
author_facet	Barbara Tartarotti Florian Trattner Daniel Remias Nadine Saul Christian E. W. Steinberg Ruben Sommaruga
author_sort	Barbara Tartarotti
title	Distribution and UV protection strategies of zooplankton in clear and glacier-fed alpine lakes
title_short	Distribution and UV protection strategies of zooplankton in clear and glacier-fed alpine lakes
title_full	Distribution and UV protection strategies of zooplankton in clear and glacier-fed alpine lakes
title_fullStr	Distribution and UV protection strategies of zooplankton in clear and glacier-fed alpine lakes
title_full_unstemmed	Distribution and UV protection strategies of zooplankton in clear and glacier-fed alpine lakes
title_sort	distribution and uv protection strategies of zooplankton in clear and glacier-fed alpine lakes
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/898fc4aeb57c495190dcbce090659d9f
work_keys_str_mv	AT barbaratartarotti distributionanduvprotectionstrategiesofzooplanktoninclearandglacierfedalpinelakes AT floriantrattner distributionanduvprotectionstrategiesofzooplanktoninclearandglacierfedalpinelakes AT danielremias distributionanduvprotectionstrategiesofzooplanktoninclearandglacierfedalpinelakes AT nadinesaul distributionanduvprotectionstrategiesofzooplanktoninclearandglacierfedalpinelakes AT christianewsteinberg distributionanduvprotectionstrategiesofzooplanktoninclearandglacierfedalpinelakes AT rubensommaruga distributionanduvprotectionstrategiesofzooplanktoninclearandglacierfedalpinelakes
_version_	1718384608969490432

Distribution and UV protection strategies of zooplankton in clear and glacier-fed alpine lakes

Ejemplares similares