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Inproceedings Reference Detecting algae blooms in European waters
A near real-time algal bloom detection service has been developed for European waters. Daily chlorophyll a data from Envisat/MERIS and Aqua/MODIS are compared to a predefined threshold map to determine whether an algal bloom has occurred. The design of the threshold map takes account of two factors. Firstly, over European waters regional differences in typical and extreme levels of chlorophyll a span two orders of magnitude. A concentration, e.g. 2 μg/1, that would be considered as a bloom concentration in one region could correspond to a relatively low concentration in another region. Secondly, the errors in satellite chlorophyll a can be significant in coastal waters effectively giving an artificial background level in satellite images. To account for these two factors a threshold map has been designed using satellite chlorophyll a data from a previous year, with separate threshold maps for each sensor to take account of sensor-specific bias. This threshold is defined here as the top 10\% level of a previous year's chlorophyll a data. The results of algal bloom detection in various regions are analysed in terms of bloom timing, duration and strength. Differences between the performance for the MERIS and Aqua sensors are also discussed.
Located in Library / RBINS Staff Publications
Inproceedings Reference Use of the near infrared similarity reflectance spectrum for the quality control of remote sensing data
The shape of water-leaving reflectance spectra in the near infrared range 700-900nm is almost invariant for turbid waters and has been analysed and tabulated as a similarity spectrum by normalisation at 780nm. This similarity spectrum is used here for the quality control of seaborne reflectance measurements and for the improvement of sky glint correction. Estimates of the reflectance measurement error associated with imperfect sky glint correction from two different wavelength pairs are shown to be nearly identical. A demonstration of residual reflectance correction for data collected in cloudy, high wave conditions has shown that this correction removes a large source of variability associated with temporal variation of the wave field. The error estimate applied here to seaborne measurements has wide-ranging generality and is appropriate for any water-leaving reflectance spectra derived from seaborne, airborne or satellite borne sensors provided suitable near infrared bands are available.
Located in Library / RBINS Staff Publications / Pending Duplicate Bibliography Entries
Article Reference On a new Seison Grube, 1861 from coastal waters of Kenya, with a reappraisal of the classification of the Seisonida (Rotifera)
On occasion of the discovery of a new species of a marine epizoic rotifer of the enigmatic Seisonidae, from Gazi Bay in Kenya, we reassessed the classification of the group. The taxon was until now known to contain only 2 species, viz. Seison nebaliae and S. annulatus, both of which live attached to Crustacea of the genus Nebalia. The new species, Seison africanus sp. nov., was diagnosed by its species-specific trophi morphology and relatively small size. A comparison with the 2 other known seisonid species reveals a sister group relationship between S. africanus sp. nov. and S. nebaliae, based on similarities in trophi structure and, accordingly, an assumed feeding mode and relationship with their hosts. The fundamental differences between these 2 commensal sister taxa and the ectoparasitic S. annulatus prompted a reevaluation of the generic classification of these animals. Accordingly, we propose to reestablish the genus Paraseison Plate, 1887 in order to accommodate P. annulatus (Claus, 1876) (comb. nov.).
Located in Library / RBINS Staff Publications / Pending Duplicate Bibliography Entries
Article Reference The cytheroidean spinneret seta, an evolutionary novelty in ostracod phylogeny. 
Located in Library / RBINS Staff Publications 2022
Inproceedings Reference Monkeypox viruses circulate in distantly-related small mammal species in the Democratic Republic of the Congo
Located in Library / RBINS Staff Publications 2023 OA
Inproceedings Reference Biodiversity changes in African forests and the emergence of infectious diseases: Should we worry?
Located in Library / RBINS Staff Publications 2023 OA
Inproceedings Reference Uncovering the diversity and evolutionary histories of viruses from archived specimens from the Afrotropics
Located in Library / RBINS Staff Publications 2023 OA
Inproceedings Reference Diversity of rodents and their viruses from pristine to degraded habitat in DR Congo
Located in Library / RBINS Staff Publications 2023 OA
Inproceedings Reference Molecular barcoding capacities for a sharper picture of wildmeat consumption in Central Africa
Located in Library / RBINS Staff Publications 2023 OA
Inproceedings Reference Biodiversity and seasonal abundance of ticks (Ixodina) parasitizing domestic pigs slaughtered at the IAT (Kisangani, DRC)
Located in Library / RBINS Staff Publications 2023 OA