| Título: | Oligotrophy: the forgotten end of an ecological spectrum |
| Autores: |
Kociolek, John P.; University of Colorado Stoermer, Eugene F.; University of Michigan |
| Fecha: | 2009-10-21 |
| Publicador: | Acta Botánica Croática |
| Fuente: |
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| Tipo: |
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| Tema: | Diatom; water quality; oligotrophy; conservation |
| Descripción: | Most studies that consider the relationship of diatoms and water quality have focused their attention on the questions and practicalities of water pollution or perturbations in some form or another. Many models and studies have demonstrated the environmental tolerances or changes in structure of diatom communities related to environmental challenges. This focus on the impacted end of the water quality spectrum has led, of necessity, to issues ultimately related to habitat restoration. We contend that a concentrated effort to develop more fully the theory and there is a need for practice related to oligotrophy, the other, ignored end of the water quality spectrum. We explore the historical usages of the term oligotrophy, as well as the challenges and promise of autecological and community approaches to understanding oligotrophy, and the possibility of focusing more on conservation rather than restoration in water quality issues. |
| Idioma: | Inglés |
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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 |