نتایج جستجو برای: macrophytes
تعداد نتایج: 1729 فیلتر نتایج به سال:
Submerged macrophytes can have a profound effect on shallow lake ecosystems through their ability to modify the thermal structure and dissolved oxygen levels within the lake. Invasive macrophytes, in particular, can grow rapidly and induce thermal gradients in lakes that may substantially change the ecosystem structure and challenge the survival of aquatic organisms. We performed fine-scale mea...
Studies suggest that, unlike the situation in temperate lakes, high biomasses of omnivorous fish are maintained in subtropical and tropical lakes when they shift from a turbid phytoplankton-dominated state to a clear water macrophyte-dominated state, and the predation pressure on large-bodied zooplankton therefore remains high. Whether this reflects a higher degree of herbivory in warm lakes th...
Submerged macrophytes play a key role in north temperate shallow lakes by stabilizing clear-water conditions. Eutrophication has resulted in macrophyte loss and shifts to turbid conditions in many lakes. Considerable efforts have been devoted to shallow lake restoration in many countries, but long-term success depends on a stable recovery of submerged macrophytes. However, recovery patterns var...
Decomposition is essential for carbon and nutrients cycling for all ecosystems (Hoorens et al., 2003). In lentic aquatic environments (e.g., lakes and reservoirs), aquatic macrophytes are the main autochthonous detritus source, and their mineralization is fundamental for maintaining biogeochemical cycles, associated with energy flux and detritus food-webs. (Bianchini Junior et al., 2014). In di...
1 Multi-season reflectance data from radiometrically and geometrically corrected 2 multispectral SPOT-5 images of 10-m resolution were combined with thorough field campaigns 3 and land cover digitizing using a binary classification tree algorithm to estimate the area of 4 marshes covered with common reeds (Phragmites australis) and submerged macrophytes 5 (Potamogeton pectinatus, P. pusillus, M...
Wetland ecosystems act as natural freshwater purification systems, but their rich biodiversity is being threatened with the introduction of non-native snail, Pomacea canaliculata. This study was conducted to measure herbivory effects and growth rate P. canaliculata on common macrophytes: Ipomoea aquatica, batatas, Pandanus amaryllifolius Cucurma longa. In separate experiments, macrophyte specie...
We aimed to determine the effects of water level and habitat heterogeneity on gastropod fauna in littoral zone, differentiation functional feeding guilds (FFG) gastropods. Two periods were analyzed: 2012 (low level, LWL) 2013 (high HWL) zone two shallow waterbodies (Sutla backwater, NW Croatia). Waterbody S1, covered with Ceratophyllum demersum, was sampled macrophyte stands, benthal area, whil...
Macrophytes play an important role in the functioning and structuring of aquatic environments but rapid mass development invasive macrophytes is causing global concerns. Macroinvertebrate richness abundance are strongly influenced by as offer habitats food resources, increase structural heterogeneity, provide refuges. Meanwhile, presence affects efficiency standard sampling methods for macroinv...
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