Publication

The Hydrurus Paradox - An Interdisciplinary Approach to Unravel the Ecological Success of a Dominant Primary Producer in Alpine and Arctic Streams

2025

Abstract

Hydrurus foetidus is a major primary producer in arctic and alpine streams all around the world. It is a single-celled algae, forming colonies of up to 30cm, consisting a mucosal tube with branches. It forms large blooms in winter, in snow-covered surroundings, under often very nutrient-restricted conditions. Preliminary work shows H. foetidus to have its own, specific microbiome, distinct from the surrounding stream water. This hints at a symbiotic relationship. The goal of our research is to shed light on the adaptive strategies of H. foetidus and investigate the role its microbiome is playing for its survival.

Official source

https://infoscience.epfl.ch/entities/publication/e671c728-722d-46e3-93d3-92ee0237f399

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2025

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/e671c728-722d-46e3-93d3-92ee0237f399

About this result

Related concepts (32)

Algae

Algae (UKˈælɡi:, USˈældʒi:; : alga ˈælɡə) is an informal term for a large and diverse group of photosynthetic, eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular microalgae, such as Chlorella, Prototheca and the diatoms, to multicellular forms, such as the giant kelp, a large brown alga which may grow up to in length. Most are aquatic and lack many of the distinct cell and tissue types, such as stomata, xylem and phloem that are found in land plants.

Green algae

The green algae (: green alga) are a group consisting of the Prasinodermophyta and its unnamed sister which contains the Chlorophyta and Charophyta/Streptophyta. The land plants (Embryophytes) have emerged deep in the Charophyte alga as sister of the Zygnematophyceae. Since the realization that the Embryophytes emerged within the green algae, some authors are starting to include them. The completed clade that includes both green algae and embryophytes is monophyletic and is referred to as the clade Viridiplantae and as the kingdom Plantae.

Brown algae

Brown algae (: alga), comprising the class Phaeophyceae, are a large group of multicellular algae, including many seaweeds located in colder waters within the Northern Hemisphere. Brown algae are the major seaweeds of the temperate and polar regions. They are dominant on rocky shores throughout cooler areas of the world. Most brown algae live in marine environments, where they play an important role both as food and as a potential habitat. For instance, Macrocystis, a kelp of the order Laminariales, may reach in length and forms prominent underwater kelp forests.

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The Hydrurus Paradox - An Interdisciplinary Approach to Unravel the Ecological Success of a Dominant Primary Producer in Alpine and Arctic Streams

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