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Cladocera; anthropogenic activities; aquatic plants; catenas; climate change; evolution; freshwater; freshwater lakes; grasslands; human health; humans; indicator species; littoral zone; organic matter; sediments; water security; watersheds; wetlands; zooplankton; China
Abstract:
... The ecological environment of grassland lakes is closely related to water security and human health in both arid and semiarid regions. The protection of freshwater and wetland ecological environments in grasslands promotes the stable and healthy development of ecosystems in arid and semiarid areas. In the present study, we investigated the long-term eco-environmental evolution of a typical grassla ...
... The Xiangjiang River region witnessed intensive economic and cultural activities in the past two millennia. In particular, the thriving ceramic production during the Tang Dynasty had a far-reaching impact on the local environment. However, the lack of palaeo-ecological and archaeological research at and around historical production sites hinders our understanding on the relationship between human ...
... Several regions of the world have been suffering from problems of water quality degradation caused mainly by the input of nutrients such as nitrogen and phosphorus, resulting from anthropic activities. In excess, these nutrients can be considered micropollutants that could be responsible for the blooms of aquatic plant species, algae, and potentially toxic cyanobacteria, resulting in the interfere ...
algorithms; anthropogenic activities; aquatic plants; basins; climate; computer software; forests; humans; lakes; land cover; land use; landscapes; pastures; remote sensing; risk assessment; society; socioeconomic development; statistical analysis; surface water; sustainable land management; water pollution; watersheds; wetlands; Iran
Abstract:
... As of natural constraints, and the specific climate of Iran, as well as the increasing importance of international water resources in the socio‐economic development of societies, studies on surface water resources, especially wetlands, merit special attention. Accordingly, the TM, ETM+ and OLI satellite images of 1985, 2000 and 2018 were used in the present study to detect changes in the Choghakho ...
... Wetlands have been degrading and reducing under the influences of human activity and climate change. Landsat long-term observations can help us better track the changing evidences of wetland habitats that would be valuable for guiding the restoration and conservation of wetland. In this study, we demonstrated the results of tracking the changing evidence of wetland habitats using Landsat observati ...
... Aquatic vegetation was surveyed at Mammoth Spring, AR, representing the first extensive survey of this resource since 1859. Thirty-eight angiosperm species were identified during this study, including 17 species of monocots and 21 species of eudicots. Seven species were nonnative, but they are not considered invasive. Eleven of the species reported from the spring in 1859 are still present, but so ...
... Since the 1960s, the Venice Lagoon has suffered a sharp aquatic plant constriction due to eutrophication, pollution, and clam fishing. Those anthropogenic impacts began to decline during the 2010s, and since then the ecological status of the lagoon has improved, but in many choked areas no plant recolonization has been recorded due to the lack of seeds. The project funded by the European Union (LI ...
... Wetlands are critical components of freshwater biodiversity and provide ecosystem services, but human activities have resulted in large‐scale loss of these habitats across the globe. To offset this loss, mitigation wetlands are frequently constructed, but their ability to replicate the functions of natural wetlands remains uncertain. Further, monitoring of mitigation wetlands is limited and often ...
... Revealing cryptic diversity is of great importance for effective conservation and understanding macroevolution and ecology of plants. Ottelia, a typical example of aquatic plants, possesses extremely variable morphology and the presence of cryptic diversity makes its classification problematic. Previous studies have revealed cryptic Ottelia species in Asia, but very little is known about the molec ...
... Phosphorous (P) loads from anthropogenic sources increase eutrophication and reduce water quality. This study tested the management of two floating aquatic vegetation (FAV) species—water hyacinth (Eichhornia crassipes (Mart.) Solms)) and water lettuce (Pistia stratiotes L.)—and introduced flow facilitated by hydraulic pumps in reducing P loads exiting agricultural drainage ditches. The experimenta ...
... Anthropogenic activities and natural causes contribute to an increase in the area and degree of degraded saline wetlands in arid/semi‐arid and coastal regions. The objective of this study was to determine the salt tolerance of the seven aquatic plant species Phragmites australis, Arundo donax, Canna indica, Scirpus validus, Alternanthera philoxeroides, Phyllostachys heteroclada and Potederia corda ...
... There has been an ongoing debate about human impacts on the evolution of the vegetation cover on the Yangtze delta plain dating back to the Neolithic period. In this study, we carried out pollen identification and grain size analysis on two sediment profiles obtained from the Neolithic Guangfulin site in the Yangtze delta. Together with published results of radiocarbon ages, organic elemental chem ...
... Riparian zones are more susceptible to invasions of alien plant species than other ecosystems. Plant invasion is determined by multiple interacting factors, such as the characteristics of the invasive plants, the climate, disturbance patterns, and competition with native plants. To investigate the multiple interactions of environmental factors with regard to the invasion of an alien plant species, ...
... The ecological communities supported by freshwater habitats and wetlands that persist from floodplain inundation generate numerous cultural, recreational and economic values via commercial fisheries and other human uses of these habitats. However, the alteration of flow connectivity, degradation, and disruption of physical processes that sustain different levels of organisms (e.g., primary produce ...
... Wetlands play a critical role in the environment. With the impacts of climate change and human activities, wetlands have suffered severe droughts and the area declined. For the wetland restoration and management, it is necessary to conduct a comprehensive analysis of wetland loss. In this study, the Xiong’an New Area was selected as the study area. For this site, we built a new method to ide ...
anthropogenic activities; aquatic plants; dredging; engineering; fish; floodplains; habitat conservation; islands; monitoring; rivers; species richness; wildlife habitats; wind; Mississippi River
Abstract:
... The Upper Mississippi River is maintained in its current navigable state through impoundments, dredging, and other engineering projects. These stressors, along with anthropogenic impacts and natural system processes, led to declines in aquatic vegetation and the loss of fish and wildlife habitat, with a major downturn the late 1980s and early 1990s. Large‐scale restoration projects, such as the on ...
... It is generally hypothesized that forest dieback is a characteristic of alder swamp forests (alder carrs, Alnion glutinosae alliance). Different internal and external factors may trigger this process, including human disturbance, changes in river discharge, unusually severe and prolonged flooding, terminal age of an even-aged alder forest (ca. 100–150 years) and others. Although forest dieba ...
... Mining is an important human activity that significantly affects the landscape character, particularly through excavation of spoil material and its deposition on spoil banks. The information on terrain or vegetation cover of spoil banks is often required for two different reasons: (i) to monitor and prevent adverse effect of hazards associated with unstable terrain; and (ii) to assess restoration ...
... In recent years, investigating the trend of aquatic plant diversity in response to different disturbance events has received increasing interest. However, there is limited knowledge of the different stages of aquatic vegetation succession over a long period in eutrophic lakes. In this study, we analyzed aquatic plant species richness and its relation to the physical and chemical characteristics of ...
... The aim of our study was to identify the main abiotic factors that influence the biodiversity of forest-steppe oxbows in limnophase. Experiments were performed in 2016–2017 in Penza oblast, Central Russia. In addition to disturbed water exchange, isolated oxbows experienced such human influence as logging and plowing on watersides, and the construction of roads and mounds. Under those conditions, ...