Ritter Catarina, Raposeiro Pedro M, Gonçalves Vítor
CIBIO, Research Center in Biodiversity and Genetic Resources, InBIO Associate Laboratory / Faculty of Sciences and Technology, University of the Azores, Ponta Delgada, Portugal CIBIO, Research Center in Biodiversity and Genetic Resources, InBIO Associate Laboratory / Faculty of Sciences and Technology, University of the Azores Ponta Delgada Portugal.
Biodivers Data J. 2020 Dec 16;8:e59813. doi: 10.3897/BDJ.8.e59813. eCollection 2020.
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), Lange-Bertalot and 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.
在此，我们展示了2015年春季野外考察期间采集的样本所获得的数据，此次考察旨在更好地了解马德拉岛淡水硅藻的多样性和分布模式。按照欧洲和葡萄牙关于常规硅藻采样与分析的标准及建议，我们在40个地点采集了样本，这些地点分布于27条常年溪流中，并利用一般的硅藻植物志以及葡萄牙淡水硅藻研究来鉴定其中存在的硅藻物种。
关于马德拉群岛淡水硅藻组合的多样性和分布，人们了解甚少。本研究报告了在马德拉岛40个地点（分布于27条常年溪流）开展的一项调查。共记录到965次硅藻（硅藻门）出现情况，隶属于44个属、27个科的130个不同分类单元。出现次数最多的科为杆状藻科（176次）、曲壳藻科（135次）和舟形藻科（133次）。此前在马德拉岛描述过的两种硅藻特有种（Lange-Bertalot，1993年；Lange-Bertalot和Lange-Bertalot）仅在少数地点被观察到，这些地点大多位于月桂林。有60个物种不仅是马德拉岛的新记录，也是马德拉群岛的新记录。
