Event deposits in lake sediments provide invaluable chronicles of geodynamic and climatic natural hazards on multi-millennial timescales. Sediment archives are particularly useful for reconstructing high-impact, low-frequency events, which rarely observed instrumental or historical data. However, attributing a trigger mechanism to event can be challenging as different types events produce with ...

Lakes worldwide are under threat by a myriad of environmental stressors that have been increasing in number and magnitude. These can be regional such as climate change, or local nutrient-rich runoff, invasive species, road salt contamination, to name but few. To protect lake ecosystems from further deterioration, we need long-term data define pre-disturbance baselines identify causing the great...

The Wisconsin glaciation was started a approximately 125,000 years ago and reached its lowest extend between 20,000 to 21,000 years ago during which the sea level fell 120 to 130 meter. At the end of the ice age, about 18,000 years ago, the sea level increased and reached its present level about 5,000 years ago. The Persian Gulf was exposed in the last glacial moment (LGM). After this moment, t...

Efforts to restore enriched lakes have increased yet there remains uncertainty about whether restoration targets can be achieved and over what timescale. Paleoecological techniques, principally diatom analyses, were used to examine the degree of impact and recovery in 12 European lakes subject to eutrophication and subsequent reduction in nutrient loading. Dissimilarity scores showed that all s...

—A new genus and species of predaceous water bugs, Triassonepa solensis n. gen. n. sp., is described from the Triassic Cow Branch Formation of Virginia and North Carolina (USA) based on ~36 adult specimens and 51 nymphs. This species is the oldest known member of the extant family Belostomatidae. It is placed in a new genus based on the unique structure of the raptorial foreleg, in which the ta...

Freshwater quality represents a central issue for human populations and the conservation of aquatic communities. In this sense, freshwater reservoirs, such as lakes, require proper management monitoring plans to avoid their deterioration pollution. Bioindicators, testate amoebae, are an excellent tool increasingly utilized limnology paleolimnology assess trophic status lacustrine environments. ...

Microbial communities play important roles in lake ecosystems and are sensitive to environmental change. However, our understanding of their responses long-term change such as eutrophication is limited, monitoring rare, traditional paleolimnological techniques (pigments microfossils) restricted a low taxonomic resolution, or organisms with well-preserved structures. Sedimentary DNA (sedDNA) pro...

Many northwest European lake systems are suffering from the effects of eutrophication due to continued loading and/or poor, ineffective management strategies. Coastal brackish lakes particularly difficult manage complex nitrogen, phosphorus, and salinity dynamics that may exert varying influence on biological communities, but long-term data how these important often biodiverse respond change ra...

Lake sediments reflect conditions in the water column and can be used for rapid, integrative measurements of limnological variables. Examination of 2LoPb-dated cores from 12 Florida lakes of widely differing trophic state (expressed as Carlson’s trophic state index: TSI) shows that net accumulation rate of organic matter is related to primary productivity in the water column. In 26 other lakes ...