Within versus between-lake variability of sedimentary diatoms: the role of sampling effort in capturing assemblage composition in environmentally heterogeneous shallow lakes

2018 ◽  
Vol 60 (4) ◽  
pp. 525-541 ◽  
Author(s):  
Gabriela S. Hassan
Forests ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 25
Author(s):  
László Somay ◽  
Viktor Szigeti ◽  
Gergely Boros ◽  
Réka Ádám ◽  
András Báldi

Wood pastures are home to a variety of species, including the dung beetle. Dung beetles are an important functional group in decomposition. Specifically, in terms of livestock manure, they not only contribute to nutrient cycling but are key players in supporting human and animal health. Dung beetles, however, are declining in population, and urgent recommendations are needed to reverse this trend. Recommendations need to be based on solid evidence and specific habitats. Herein, we aimed to investigate the role of an intermediate habitat type between forests and pastures. Wood pastures are key areas for dung beetle conservation. For this reason, we compared dung beetle assemblages among forests, wood pastures, and grasslands. We complemented this with studies on the effects of dung type and season at three Hungarian locations. Pitfall traps baited with cattle, sheep, or horse dung were used in forests, wood pastures, and pasture habitats in spring, summer, and autumn. Dung beetle assemblages of wood pastures showed transient characteristics between forests and pastures regarding their abundance, species richness, Shannon diversity, assemblage composition, and indicator species. We identified a strong effect of season and a weak of dung type. Assemblage composition proved to be the most sensitive measure of differences among habitats. The conservation of dung beetles, and the decomposition services they provide, need continuous livestock grazing to provide fresh dung, as well as the maintenance of wood pastures where dung beetle assemblages typical of forests and pastures can both survive.


2015 ◽  
Vol 14 (11) ◽  
pp. 2007-2013 ◽  
Author(s):  
Nadia Diovisalvi ◽  
Armando M. Rennella ◽  
Horacio E. Zagarese

A schematic representation of the seasonal cycle of rotifer in L. Chascomús. In this figure the relative abundances of the three dominant rotifer species are expressed as fractions of the estimated clear-sky mean daily incident solar radiation.


Hydrobiologia ◽  
2012 ◽  
Vol 684 (1) ◽  
pp. 177-187 ◽  
Author(s):  
Helen Agasild ◽  
Priit Zingel ◽  
Tiina Nõges
Keyword(s):  

2003 ◽  
Vol 2 (2) ◽  
pp. 118-123 ◽  
Author(s):  
A. Patricia Pérez ◽  
Mónica M. Diaz ◽  
Marcela A. Ferraro ◽  
Gabriela C. Cusminsky ◽  
Horacio E. Zagarese

Hydrobiologia ◽  
2003 ◽  
Vol 506-509 (1-3) ◽  
pp. 135-145 ◽  
Author(s):  
Martin Søndergaard ◽  
Jens Peder Jensen ◽  
Erik Jeppesen

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