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|Title: ||Biotic and abiotic parameters that distinguish types of temporary ponds in a Portuguese Mediterranean ecosystem|
|Authors: ||Pinto-Cruz, Carla|
Barbosa, A. Márcia
|Issue Date: ||2011|
|Citation: ||Pinto-Cruz, C.; Barbosa, A.M.; Molina, J.A.; Espírito-Santo, M.D.Biotic and abiotic parameters that distinguish types of temporary ponds in a Portuguese Mediterranean ecosystem, Ecological Indicators, 11, 6, 1658-16, 2011.|
|Abstract: ||Temporary ponds are seasonal wetland habitats subjected to extreme and unstable ecological conditions.
Some are classified as priority habitats for conservation by the European Union Habitats Directive.
Our study area was the coastal plain of southwest Portugal, which spans across 100km north to south
and hosts a large number of temporary ponds as a consequence of climatic and edaphic characteristics.
Field sampling of floristic and edaphic data was carried out in 24 temporary ponds every spring between
2005 and 2008. We recorded a total of 174 plant species identified within visually homogeneous plots.
We included the data in a geographic information system and classified ponds according to their floristic
composition, using a biotic regionalization analysis based on species presence/absence, which is a
practical and unambiguous criterion. We found three significantly different groups of ponds which corresponded
to an eco-physiognomic pond typology: Mediterranean temporary ponds, marshlands, and
disturbed ponds. For the first two pond types we defined characteristic or indicator plant species. We
searched also for relationships between pond type and a series of large-scale climatic, geographic, and
geological variables, as well as local-scale physical and chemical properties of the soil. Pond type was
distinguished by a complex combination of some of these variables, including environmental energy, soil
texture, nitrogen content of the soil and pH. A practical way of discriminating between different|
|Appears in Collections:||CIBIO-UE - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica|
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