Aquatic Hyphomycetes from streams on Madeira Island (Portugal)

Raposeiro, Pedro M.; Faustino, Hélder; Ferreira, Verónica; Gonçalves, Vítor

doi:10.3897/bdj.8.e53690

Cited by 3 publications

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“…Despite their great importance, current knowledge about the freshwater diatoms on insular streams of Madeira Archipelago is limited in comparison with freshwater macroinvertebrates ( Hughes et al 1998 , Hughes and Furse 2001 , Hughes 2006 ), bryophytes ( Sérgio and Fontinha 1994 , Sérgio et al 2006 , Sim-Sim et al 2008 , Sim-Sim et al 2014 , Sim-Sim et al 2011 , Boch et al 2019 ) and hyphomycetes communities ( Raposeiro et al 2020 ). Although diatoms from the Madeira Archipelago have been a matter of study for more than 150 years ( Grunow 1867 , De-Toni 1891 , De-Toni 1892 , Zimmermann 1909 , Zimmermann 1911 , Schodduyn 1927 , Mölder 1947 , Lange-Bertalot 1993 , Kaufmann et al 2015 , Gonçalves et al 2016 ), including the description of two regional endemisms, little is known about the regional overall diversity of these microalgae in Madeira Island.…”

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confidence: 99%

Diatom diversity and distribution in Madeira Island streams (Portugal)

Ritter¹,

Raposeiro²,

Gonçalves³

2020

BDJ

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Here, we present the data obtained from the samples collected in a field campaign during the spring of 2015 which aims for a better understanding of the diversity and distribution patterns of freshwater diatoms in Madeira Island. Following European and Portuguese standards and recommendations for routine diatom sampling and analysis, we collected samples in 40 sites, distributed in 27 permanent streams and identified the diatom species present, using general diatom floras and studies in Portuguese freshwater diatoms. Little is known about the diversity and distribution of freshwater diatom assemblages from Madeira Archipelago. This study reports a survey in 40 sites in Madeira Island distributed in 27 permanent streams. A total of 965 diatom (Bacillariophyta) occurrences were recorded, belonging to 130 different taxa from 44 genera and 27 families. The families with the highest number of occurrences were Bacillariaceae (176), Achnanthidiaceae (135) and Naviculaceae (133). The two diatom endemisms, described previously in Madeira Island (Lange-Bertalot 1993), Nitzschia macaronesica Lange-Bertalot and Navicula madeirensis Lange-Bertalot, were only observed in a small number of sites, located mostly at Laurissilva forest. Sixty species are new records, not only to Madeira Island, but also to the Madeira Archipelago.

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Section: Introductionmentioning

confidence: 99%

Diatom diversity and distribution in Madeira Island streams (Portugal)

Ritter¹,

Raposeiro²,

Gonçalves³

2020

BDJ

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Freshwater fungal numbers

et al. 2022

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Aquatic macroinvertebrates in Madeira Island (Portugal) streams: diversity and distribution

Raposeiro

Balibrea

Riva

et al. 2022

BDJ

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The Madeira Island (Portugal; 32°24’–33°07’N, 16°16–17°16’W; 796 km2) is an oceanic island located in the North Atlantic, about 980 km south of Portugal and about 700 km west of the African coast. The presence of freshwater invertebrates in oceanic islands has always raised questions concerning dispersal, colonisation and evolution. Therefore, the freshwater fauna of Madeira Island has attracted the interest of many researchers in the past, the first publications going back to the nineteenth century. Initial studies were mainly taxonomic, resulting in a checklist of the Madeira freshwater macroinvertebrates with 240 taxa. As typical from oceanic islands, freshwater invertebrates are characterised by low diversity, with some taxonomic groups absent. Although freshwater Madeiran macroinvertebrates are a well-studied group, geographical information of diversity distribution is still scarce. Therefore, more studies are needed, especially georeferenced data of diversity and distribution of macroinvertebrate assemblages, to provide valuable information for improving knowledge and the development of typologically appropriate monitoring and conservation programmes and restoration strategies for local stakeholders. The results of the present study revealed 713 occurrences in 40 sampling points in Madeira Island streams. The occurrence data showed 70 different aquatic taxa belonging to 21 orders and 53 families. Amongst our occurrence data, 15 endemic taxa (22.1%) from Madeira Archipelago were found. In addition, different families of Collembola and different taxa of Copepoda (Onychiuridae, Poduridae, Isotomidae, Entomobryidae, Sminthuridae) comprised new records for the Madeira streams. Therefore, further taxonomic and ecological studies on freshwater invertebrates from Madeira Island should be done with a particular focus on these lesser-known groups. Thus, our data increase the geographical data distribution of freshwater macroinvertebrates and their diversity in Madeira Island. This database is an update of geographical information of diversity distribution of Madeira freshwater macroinvertebrates known groups. This information is essential for a better understanding of community composition, diversity, occurrence or spatial distribution, which will help explore different research questions on different research areas, such as community ecology and biogeography.

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Aquatic Hyphomycetes from streams on Madeira Island (Portugal)

Cited by 3 publications

References 42 publications

Diatom diversity and distribution in Madeira Island streams (Portugal)

Diatom diversity and distribution in Madeira Island streams (Portugal)

Freshwater fungal numbers

Aquatic macroinvertebrates in Madeira Island (Portugal) streams: diversity and distribution

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