Phytoplankton and Equilibrium Concept: The Ecology of Steady-State Assemblages: Proceedings of the 13th Workshop of the International Association of P

ISBN-13: 9781402016479 / Angielski / Twarda / 2003 / 403 str.

International Association of Phytoplankton Taxonomy and Ecol; Luigi Naselli-Flores; Judit Padisak

Opis

This volume summarises the outcome of the 13^th Workshop of the International Association of Phytoplankton Taxonomy and Ecology (IAP) on if, and if so under what conditions phytoplankton assemblages reach equilibrium in natural environments. Quite a number of ecological concepts use terms such as: ecological equilibrium, stability, steady-state, climax, stable state, etc. However, these ecological concepts often have been "translations" of scientific theories developed in physics or chemistry but they almost always lack scientific corroboration, the problem being that often these concepts remain vague and they are not formally defined. Here an attempt to formally recognize what "equilibrium" is in phytoplankton ecology is traced. The book also contains papers by leading scientists on the taxonomy of two selected key groups: cryptomonads and filamentous cyanoprokaryotes. This volume is addressed to all those involved in phytoplankton taxonomy and ecology and in ecology itself.

Spis treści

From IAAP to IAP.- Are there steady-state phytoplankton assemblages in the field?.- Life strategies, dominance patterns and mechanisms promoting species coexistence in phytoplankton communities along complex environmental gradients.- Phytoplankton assemblage at equilibrium in large and deep subalpine lakes: a case study from Lago Maggiore (N. Italy).- Steady state phytoplankton in a deep pre-alpine lake: species and pigments of epilimnetic versus metalimnetic assemblages.- Steady state phytoplankton assemblages during thermal stratification in deep alpine lakes. Do they occur?.- The Effect of perturbations on phytoplankton assemblages in a deep reservoir (Vouglans, France).- Factors influencing the phytoplankton steady state assemblages in a drinking-water reservoir (Ömerli reservoir, Istanbul).- Steady-state assemblages of phytoplankton in four temperate lakes (NE U.S.A.).- Phytoplankton assemblages and steady state in deep and shallow eutrophic lakes — an approach to differentiate the habitat properties of Oscillatoriales.- Equilibrium phase conditions in shallow German lakes: How Cyanoprokaryota species establish a steady state phase in late summer.- Steady-state assemblages in a Mediterranean hypertrophic reservoir. The role of Microcystis ecomorphological variability in maintaining an apparent equilibrium.- Algal assemblage types of bog-lakes in Hungary and their relation to water chemistry, hydrological conditions and habitat diversity.- Dominant species, functional assemblages and frequency of equilibrium phases in late summer phytoplankton assemblages in Hungarian small shallow lakes.- Steady-state phytoplankton assemblages in shallow Bulgarian wetlands.- Controlling factors of phytoplankton assemblages in wetlands: an experimental approach.- Steady state of phytoplankton assemblage in the tropical Lake Catemaco (Mexico).- Do steady state assemblages occur in shallow lentic environments from wetlands?.- The role of physical stability on the establishment of steady states in the phytoplankton community of two Maritime Antarctic lakes.- A companion to the identification of cryptomonad flagellates (Cryptophyceae = Cryptomonadea).- Taxonomic notes on some freshwater planktonic Cryptophyceae based on light microscopy.- Ecological and taxonomic observations on the flagellate algae characterising four years of enclosure experiments in Lake Tovel (Southern Alps).- How diverse are planktonic cryptomonads in Brazil? Advantages and difficulties of a taxonomic-biogeographical approach.- Occurrence of Cryptophyceae and katablepharids in boreal lakes.- Dominance patterns of planktonic algae in Swedish forest lakes.- Distribution and seasonal dynamics of Cryptomonads in Sicilian water bodies.- Flagellate algae (Chrysophyceae, Dinophyceae, Cryptophyceae) in 48 high mountain lakes of the Northern and Southern slope of the Eastern Alps: biodiversity, taxa distribution and their driving variables.- Redefinition of Peridinium lomnickii Wo?oszynska (Dinophyta) by scanning electronmicroscopical survey.- Long-term trends in species composition and diurnal migration of dinoflagellates in Lake Tovel (Trentino, Italy).- Planktic oscillatorialean cyanoprokaryotes (short review according to combined phenotype and molecular aspects).- A new planktic species of Pseudanabaena (Cyanoprokaryota, Oscillatoriales) from North American large lakes.- Estimation of minimum sedimentary inoculum (akinete) pool of Cylindrospermopsis raciborskii: a morphology and life-cycle based method.- Equilibrium/steady-state concept in phytoplankton ecology.