| Titre : | Aquatic Botany 84(3) - April, 2006 |
| Type de document : | Bulletin |
| Paru le : | 01/04/2006 |
Dépouillements
Article : Ouvrage
The family Alismataceae comprises 12 genera of herbaceous aquatic plants. There are only two genera that are naturally found in Neotropical regions: Echinodorus and Sagittaria. This study examines the species of Sagittaria from north-eastern Bra[...]
Article : Ouvrage
Phragmites australis tolerates a wider range of ecological conditions than Cladium mariscus and thus may be better adapted to disturbance resulting from human manipulations. We hypothesised that the difference in ecological conditions was relate[...]
Article : Ouvrage
Patrik Kraufvelin ;
Sonja Salovius ;
Hartvig Christie ;
Frithjof E. Moy ;
Rolf Karez ;
Morten F. Pedersen
This study, conducted in mesocosms, natural field sites, and in laboratory aquaria, showed that eutrophication altered the nutrient status and dominance patterns among marine macroalgae, which in turn, stimulated gammaridean density. Gammaridean[...]
Article : Ouvrage
Flooding has been described as one of the primary factors affecting arbuscular mycorrhizal (AM) colonization in wetlands. We investigated the effect of water-level fluctuations on AM colonization of Typha latifolia L. using an experimental wetla[...]
Article : Ouvrage
Juncus kraussii Hochst., an important saltmarsh macrophyte, is intensively harvested for many commercially orientated products and current populations are under threat of overexploitation. In saline, intertidal mud banks, this species occurs on [...]
Article : Ouvrage
Recent advances have improved ease and accuracy in seagrass growth measurements. Despite these improvements, seagrass leaf growth can be difficult to measure effectively; current methods are destructive to the plants and require at least two sit[...]
Article : Ouvrage
Fronds from crowded stands of clonal seaweeds, particularly those in which holdfasts are mostly perennial and are the major source of new fronds every year, are thought not to undergo self-thinning during the growth season, unlike those from cro[...]
Article : Ouvrage
The invasion of Myriophyllum spicatum into Lake Nasser, and its impact on submerged macrophyte communities are quantitatively documented. Samples of macrophytes, water and hydrosoil were collected from 17 sites, in October and November 2002. The[...]
Article : Ouvrage
We investigated the relationship between Charophytes and herbivorous waterbirds in the littoral zone of Lake Constance by quantifying their seasonal dynamics. The waterfowl extensively consumed Charophyte vegetation in shallower areas (
Article : Ouvrage
Eleocharis cellulosa Torr., a macrophyte dominating marshes of northern Belize, often experiences great water level fluctuations varying from dry conditions to prolonged submergence. We investigated morphological and ecophysiological responses ([...]
Article : Ouvrage
In this study we investigated above-ground biomass and morphological responses of a floating-leaved plant species, Nymphaea alba, to small spring water level manipulations (0.1–0.5m) in a large, shallow lake over a 9-year period (1995–2003). A y[...]
Article : Ouvrage
An experiment was conducted from May to November in Lake Hampen, Denmark, to study the effect of higher CO2 concentration on the biomass of filamentous algae. Three enclosures (1.5m diameter) were enriched with free CO2 to ∼10 times atmospheric [...]
Article : Ouvrage
We developed an equation for estimating Arundo donax shoot dry weight from shoot length. The equation, shoot dry weight (g)=14.254 (standard error=±0.275)×shoot height2 (m), was as effective at explaining a high proportion of total variation in [...]
Article : Ouvrage
Potential food sources and dominant invertebrates and fishes were collected for the examination of variability in 13C/12C and 15N/14N to determine the sources of carbon available to consumers within a Western Australian Posidonia sinuosa-dominat[...]
