The overarching aim of this paper is to investigate the lake ecosystem response to different 13 drivers over a long term period by a paleolimnological study in Lake Narlay (46°64N, 5°91E) located 14 in the Jura Mountains of France. It is a small, hard-water lake with a maximum water depth of 40 m 15 and extended anoxic condition of the bottom water. Previous results on sediments analysis have 1...

The evolution of shape in centric diatoms is investigated by probabilistic means on phylogenetic data using the Bayes Traits software, developed by Mark Pagel. Preliminary results of this method are presented showing transitional rates between one trait group to another, the results suggest that diatom valve outlines with higher degrees of symmetry are evolutionary more unstable. Weaknesses of ...

1 Center for Systems Biology and Faculty of Industrial Engineering, Mechanical Engineering and Computer Science, School of Engineering and Natural Sciences, University of Iceland, Reykjavík, Iceland, 2 Faculty of Pharmaceutical Sciences, University of Iceland, Reykjavik, Iceland, 3 Division of Science and Math, Center for Genomics and Systems Biology, New York University Abu Dhabi Institute, Ne...

We examined the Zn uptake in marine diatoms and its transfer to marine copepods under different nutrient-replete and -deplete conditions. Zn uptake, quantified by measurements of both total cellular and intracellular Zn accumulation in two coastal diatoms (Thalassiosira pseudonana and Thalassiosira weissflogii), was greatly dependent on the ambient nitrogen conditions. Semicontinuous culture ex...

Abstract Resilience of ecosystems to the sudden decline large‐bodied species is dependent on characteristics surviving guild members. However, that response may also be mediated by local habitat conditions. Here, we examine mechanisms behind observed lack functional compensation in algal‐grazing insect grazers following tadpole a forested Panamanian stream. We examined: (1) shifts individual si...

under the contemporary scenario of global climate change and increasing coastal eutrophication, baseline studies of phytoplankton diversity and distribution in relation to habitat conditions constitute the first approach to evaluate potential shifts at the base of the food webs. here we present data of phytoplankton species composition and environmental variables in winter 2006 in a temperate ...

When fossil diatoms are preserved in mires, they can be excellent indicators of ecological conditions and very useful in palaeoenviromental reconstruction, both alone and in combination with other siliceous fossils. Processing techniques for diatom frustules have varied and been modified according to the sediment from which the diatoms are being extracted. They differ from those used for palyno...

Our long term goal is to understand the ecology of phytoplankton, especially the large, colonial diatoms which frequently dominate the flora of coastal shelves, upwelling areas, fjords and banks. We are interested in ways in which species-specific properties, including cell and colony size and shape interact with small-scale physical mixing processes to regulate the spatio-temporal distribution...

A study of diatoms from the Tolmachev Reservoir (Kamchatka) was carried out using electron microscopy. As a result, 45 species and varieties Bacillariophyta 28 genera were identified, 4 algae identified only to genus level. 12 11 genera, new for flora Kamchatka diatoms, found. Most taxa are rare species, our expanded their range.