| Título: | Periphytic diatom community in a Mediterranean salt wedge estuary: the Ebro Estuary (NE Iberian Peninsula) |
| Autores: |
Rovira, Laia Torres; IRTA Trobajo, Rosa Pujadas; IRTA Ibanez, Carles Marta; IRTA |
| Fecha: | 2009-10-21 |
| Publicador: | Acta Botánica Croática |
| Fuente: |
 |
| Tipo: |
Peer-reviewed Article |
| Tema: | Diatom; estuary; salt wedge; periphyton; distribution; taxonomic composition; Ebro; Mediterranean; Spain |
| Descripción: | The Ebro River discharge is themain factor controlling hydrological dynamics in the Ebro microtidal salt wedge estuary. The aim of this study was to describe the species composition of the periphytic diatom communities, and to elucidate the main environmental factors affecting them. Samples of periphytic diatoms were collected at 8 sites along the estuary in October 2007 and January 2008. The diatom community was sampled both from natural and artificial substrata.Water depth, velocity, pH, dissolved oxygen, temperature, conductivity, total chlorophyll and water chlorophyll a, total periphytic chlorophyll, dissolved nutrients (P-PO4 3–, N-NO3 –, N-NO2 –, N-NH4 +, Si-SiO4 4–), total dissolved nitrogen and total dissolved phosphorous were determined in each campaign. Altogether, more than 120 taxa of diatoms were identified. The most abundant genera were Cocconeis, Amphora, Navicula and Tabularia. The variability of the diatom community was analyzed with multivariate analysis methods. Water stratification affected diatom community in both the horizontal and the vertical gradient, according mainly to salinity, dissolved oxygen and nutrient concentration differences. |
| Idioma: | Inglés |
1 Diatom preservation: differential preservation of sedimentary diatoms in two saline lakes por Flower, Roger J.; Environmental Change Research Centre, University College London,Ryves, David B.; University of Loughborough | 6 A comparative study on the two species of the genus Salvia L. sect. Aethiopis Bentham (Labiatae) from East Anatolia, Turkey por Kahraman, Ahmet; Middle East Technical University, Department of Biological Sciences, 06531 Ankara, Turkey,Dogan, Musa; Middle East Technical University, Department of Biological Sciences, 06531 Ankara, Turkey |
2 Variability of the pennatae diatom Gomphonema ventricosum Gregory from far eastern lakes por Yoshitake, Sakiko; Shonan Junior College,Fukushima, Hiroshi; Institute of Phycology,Kimura, Tsutomu; Institute of Phycology,Lepskaya, Ekatarina V.; Kamchatka Institute for Fisheries Research and Oceanography,Ko-Bayashi, Tuyako; Institute of Phycology | 7 Cytology and palynology of the Clematis L. species (Ranunculaceae) in Iran por Sheidai, Masoud; PROFESSOR,Habibi, Meysam; STUDENT,Azizian, Dina; RETIRED ASSOCIATE PROFESSOR,Khatamsaz, Mahboobeh |
3 Vegetation spatial heterogeneity in a hyper arid Biosphere Reserve area in north Africa por Shaltout, Kamal H.; Botany Department, Faculty of Science, Tanta University, Tanta, Egypt,Sheded, Mohamed Gabr; Professor,Salem, Ashraf I.; National Conservation Sector, Wadi Allaqi Biosphere Reserve, EEAA, Aswan, Egypt | 8 The nutritive value and role of Panicum turgidum Forssk. in the arid ecosystems of the Egyptian desert por Heneidy, Selim Z.; Professor of Plant Ecology,Halmy, Marwa Waseem; Assistant Lecturer |
4 Indirect and direct somatic embryogenesis from aerial stem explants of ginger (Zingiber officinale Rosc.) por Lincy, Adinkudik K.,Remashree, Azhimala B.,Sasikumar, Bhaskaran | 9 Nutlet morphology and its taxonomic utility in Salvia (Lamiaceae: Mentheae) from Turkey por Ozkan, Mustafa,Aktas, Kamuran,Ozdemir, Canan,Guerin, Greg |
5 Unusual thylakoid structures appearing during degradation of the photosynthetic apparatus in chloroplasts por Wrischer, Mercedes; Rudjer Boskovic Institute,Prebeg, Tatjana; Rudjer Boskovic Institute,Magnus, Volker; Rudjer Boskovic Institute,Ljubesic, Nikola; Rudjer Boskovic Institute | 10 Russian wheat aphid causes greater reduction in phloem transport capacity of barley leaves than bird cherry-oat aphid. por Saheed, Sefiu Adekilekun; Department of Botany, Rhodes University, Grahamstown 6140, South Africa; School of Life Sciences, Södertörn University College, S-141 89 Huddinge, Sweden; Department of Botany, Faculty of Science, Obafemi Awolowo University, Ile-Ife 22005, Nigeria,Jonsson, Lisbeth M.V.; School of Life Sciences, Södertörn University College, S-141 89 Huddinge, Sweden,Botha, Christiaan E.J.; Department of Botany, Rhodes University, Grahamstown 6140, South Africa |