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Título
Spatial patterns of diatom diversity and community structure in ancient Lake Ohrid
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
Hydrobiologia
Cita Bibliográfica
Cvetkoska, A., Pavlov, A., Jovanovska, E., Tofilovska, S., Blanco, S., Ector, L., Wagner-Cremer, F., & Levkov, Z. (2018). Spatial patterns of diatom diversity and community structure in ancient Lake Ohrid. Hydrobiologia, 819, 197-215. https://doi.org/10.1007/S10750-018-3637-5
Editorial
Springer
Fecha
2018
ISSN
0018-8158
Resumen
[EN] The extraordinary diversity in long-lived
lakes is largely driven by distinct eco-evolutionary
processes. With their unique biota and numerous
endemic taxa, these lakes are key settings for fundamental
studies related to ecology, diversity, and
evolution. Here, we test how the environment shapes
diatom diversity and community patterns over space in
ancient Lake Ohrid. By applying Bray–Curtis similarity
analyses of diatom community data, including
widespread and endemic taxa, we identified two major
zones: littoral and sublittoral. The latter one is being
characterized with higher endemic diversity. The a
and b diatom diversity and community distribution in
the northern and eastern part of the lake are influenced
by the presence of vertical (bathymetrical) and
horizontal barriers. The zonation of the diatom
communities appears driven by two large-scale factors:
(i) water depth, and (ii) water chemistry, primarily,
the concentration of total phosphorus, nitrogen
ammonia, and conductivity. Both drivers appear to
equally influence diatom diversity and community
patterns. We present initial data on diatom–environment
relations, where the results support earlier
ecological studies emphasizing the relevance of
ongoing human-induced eutrophication in the northern
lake area. This study provides background information
on the role of the environment in structuring
contemporary diatom diversity. However, future
research needs to focus on the biotic component
including species competition in order to reveal the
mechanisms driving spatial community dynamics in
Lake Ohrid
Materia
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