Marine diatom assemblages of the Nosy Be Island coasts, NW Madagascar: species composition and biodiversity using molecular and morphological taxonomy

Indonesian coral reef habitats reveal exceptionally high species richness and biodiversity of diatom assemblages

“…The rank abundance curve (Fig. 99) showed that abundances in the Indonesian Island habitats that we studied were significantly different from trends in species abundance of the Nosy Be Island in NW Madagascar or in the Laguna Diablas of Isabela Island in the Galapagos (Łopato, 2016;Kryk et al, 2020). These two latter localities were characterized by significantly higher abundances of the high-ranking species than low-ranking ones, which was opposite to the Indonesian curve.…”

“…alt-text: Fig. 99 Rank abundance curve comparing Indonesian data (this study), Madagascar data (Kryk et al, 2020) and Galapagos data (Łopato, 2016).…”

“…Both analyses were done using PAST 3.15 software for scientific data analysis (Hammer et al, 2001). Moreover, both analyses compared additional data from our previous research on tropical oceanic island diatom biodiversity based on Nosy Be Island data (NW Madagascar; Kryk et al, 2020).…”

“…Despite that, Stidolph et al (2012) presented an illustrated series of marine benthic diatoms from the coasts of Java Island, the access of illustrated guides for this geographic region is still limited (for a review see Lobban and Jordan, 2010). An increasing interest in research on coral reef diatoms dates back to the start of the 21st century, focusing on locations such as the Great Barrier Reef (Gottschalk et al, 2007), Guam (Lobban et al, 2012), Martinique in the Western Atlantic (Desrosiers, 2014), Mascarenes (Riaux-Gobin et al 2011a, 2011bAl-Handal et al, 2016), Galapagos (Łopato, 2016) and Madagascar (Kryk et al, 2020).…”

“…Owing to these study efforts, significant new insights are now available on the taxonomy, geographic distribution and relative abundance, species richness and bioindices of marine benthic diatoms (e.g. Gottschalk et al, 2007;Hein et al, 2008;Lobban et al, 2012;Desrosiers, 2014;Al Handal et al, 2016;Kryk et al, 2020). Many species and genera have been described based on monoclonal strains and molecular markers have been acquired (Sato, 2008;Ashworth et al, 2012;MacGillivary & Kaczmarska 2012Lobban and Ashworth, 2014;Li et al 2016Li et al , 2018Dąbek et al 2017Dąbek et al , 2019Prasetiya et al, 2019;Witkowski et al, 2020).…”