Macrophyte community structure and species occurrence in relation to environmental determinants in the ephemeral aquatic habitats of Gavdos, Greece

Hydrobiologia ◽  
2009 ◽  
Vol 630 (1) ◽  
pp. 127-138 ◽  
Author(s):  
I. N. Vogiatzakis ◽  
G. Kazakis ◽  
D. Ghosn
PLoS ONE ◽  
2020 ◽  
Vol 15 (7) ◽  
pp. e0235441
Author(s):  
Margaret A. Vogel ◽  
Olivia U. Mason ◽  
Thomas E. Miller

2004 ◽  
Vol 359 (1444) ◽  
pp. 585-597 ◽  
Author(s):  
Nicholas J. Gotelli

Community ecology seeks to explain the number and relative abundance of coexisting species. Four research frontiers in community ecology are closely tied to research in systematics and taxonomy: the statistics of species richness estimators, global patterns of biodiversity, the influence of global climate change on community structure, and phylogenetic influences on community structure. The most pressing needs for taxonomic information in community ecology research are usable taxonomic keys, current nomenclature, species occurrence records and resolved phylogenies. These products can best be obtained from Internet–based phylogenetic and taxonomic resources, but the lack of trained professional systematists and taxonomists threatens this effort. Community ecologists will benefit most directly from research in systematics and taxonomy by making better use of resources in museums and herbaria, and by actively seeking training, information and collaborations with taxonomic specialists.


2014 ◽  
Vol 62 (4) ◽  
pp. 1587 ◽  
Author(s):  
Georgea Santos Nogueira-Melo ◽  
Paulo Jorge Parreira Santos ◽  
Tatiana Baptista Gibertoni

<p>Mangroves are transitional ecosystems between terrestrial and marine environments, and are distinguished by a high abundance of animals, plants, and fungi. Although macrofungi occur in different types of habitat, including mangroves, little is known about their community structure and dynamic. Therefore the aim of this study was to analyze the diversity of macrofungi in a number of Brazilian mangroves, and the relationship between such diversity, precipitation and area of collection. A total of 32 field trips were undertaken from 2009 to 2010, and macrofungi were studied in four 250×40m transects: Timbó and Santa Cruz Channel on the Northern coast, and Maracaípe and Ariquindá on the Southern coast. All basidiomata found along the transects were placed in paper bags, air-dried and identified using existing literature. It was found that Northern areas predominantly featured <em>Avicennia schaueriana</em> mangroves, while <em>Rhizophora mangle</em> dominated in Southern transects. A total of 275 specimens were collected, and 33 species, 28 genera, 14 families and six orders were represented. Overall abundance and species richness did not vary significantly among areas, but varied according to time, being higher during the rainy season. Subtle differences in composition were observed over time and between areas, probably due to variations in plant species occurrence. Further studies with collections during months of greater precipitation in transects dominated by different mangrove species of the same ecosystem are suggested to assess the overall diversity of mycobiota in these ecosystems.</p><p> </p>


2003 ◽  
Vol 75 (4) ◽  
pp. 323-337 ◽  
Author(s):  
Nicole Hansel-Welch ◽  
Malcolm G. Butler ◽  
Thomas J. Carlson ◽  
Mark A. Hanson

Biologia ◽  
2008 ◽  
Vol 63 (6) ◽  
Author(s):  
Enikő Krasznai ◽  
Gizella Fehér ◽  
Gábor Borics ◽  
Gábor Várbíró ◽  
István Grigorszky ◽  
...  

AbstractA method recently proposed by Coesel that uses the desmid flora to assess the conservation value of aquatic habitats was applied to an alkaline and hypertrophic oxbow of the Upper Tisza river (NE Hungary). According to the macrophyte community the oxbow contains two distinct habitats, both of which provide suitable conditions for the development of a rich desmid flora. High temporal and spatial differences in the algal flora were observed in periphyton and plankton samples taken in June and August 2004. The sample of Utricularia vulgaris periphyton collected in August was characterised by the most species-rich desmid flora. The conservation value of this sample was the maximum according to Coesel’s method. The latter also proved to be useful for the assessment of the conservation value of plankton net samples taken from among the macrophytes. The use of modified rarity value calculations as recently proposed by Fehér did not significantly affect the conservation value, but different enumeration methods to quantify the floristic diversity did result in different conservation values. We found that Coesel’s desmid based method is a useful tool for assessing the conservation value of the studied oxbow. Based our results the Coesel method’s applicability and usefulness depended on (i) the sampling location (open water or macrophytic region) samples were taken from open water or from macrophytic region; and (ii) species enumeration procedures (up to 400 specimens counted, or whole droplets counted).


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