Effects of Seasonal Anoxia on the Microbial Community Structure in Demosponges in a Marine Lake in Lough Hyne, Ireland.

Climate change is expanding marine oxygen minimum zones (OMZs), while anthropogenic nutrient input depletes oxygen concentrations locally. The effects of deoxygenation on animals are generally detrimental; however, some sponges (Porifera) exhibit hypoxic and anoxic tolerance through currently unknown mechanisms. Sponges harbor highly specific microbiomes, which can include microbes with anaerobic capabilities.

The global explosion of eukaryotic algae: The potential role of phosphorus?

There arose one of the most important ecological transitions in Earth's history approximately 750 million years ago during the middle Neoproterozoic Era (1000 to 541 million years ago, Ma). Biomarker evidence suggests that around this time there was a rapid shift from a predominantly bacterial-dominated world to more complex ecosystems governed by eukaryotic primary productivity. The resulting 'Rise of the algae' led to dramatically altered food webs that were much more efficient in terms of nutrient and energy transfer.

The ichthyotoxic genus Pseudochattonella (Dictyochophyceae): Distribution, toxicity, enumeration, ecological impact, succession and life history - A review.

The marine genus Pseudochattonella is a recent addition to the list of fish killing microalgae. Currently two species are recognised (viz. P.

The competitive dynamics of toxic Alexandrium fundyense and non-toxic Alexandrium tamarense: The role of temperature.

The dinoflagellate Alexandrium produces paralytic shellfish poisoning toxins. The genus is globally distributed, with Scottish waters being of particular interest due to the co-occurrence of different species and strains. In Scottish waters, Alexandrium was historically thought to be dominated by the highly toxic (Group I) Alexandrium fundyense.

Interspecific Competition Study Between Pseudochattonella farcimen and P. verruculosa (Dictyochophyceae)-Two Ichthyotoxic Species that Co-occur in Scandinavian Waters.

The genus Pseudochattonella has become a frequent component of late winter-early spring phytoplankton community in Scandinavian waters, causing extensive fish kills and substantial economic losses. One of currently two recognised species, P. farcimen, is often abundant prior to the diatom spring bloom.

A quantitative real-time PCR assay for identification and enumeration of the occasionally co-occurring ichthyotoxic Pseudochattonella farcimen and P. verruculosa (Dictyochophyceae) and analysis of variation in gene copy numbers during the growth phase of single and mixed cultures.

The ichthyotoxic genus Pseudochattonella forms recurrent extensive blooms in coastal waters in Japan, New Zealand and Northern Europe. It comprises of two morphologically similar species, P. verruculosa and P.

Development of a multiplex real-time qPCR assay for simultaneous enumeration of up to four marine toxic bloom-forming microalgal species.

Harmful algal blooms (HAB) pose serious economic and health risks worldwide. Current methods of identification require high levels of taxonomic skill and can be highly time-consuming thus limiting sample throughput. So, new rapid and reliable methods for detection and enumeration of HAB species are required.