Results 31 to 40 of about 12,943,147 (298)
Size, longevity and cancer: age structure [PDF]
There is significant recent interest in Peto's paradox and the related problem of the evolution of large, long-lived organisms in terms of cancer robustness. Peto's paradox refers to the expectation that large, long-lived organisms have a higher lifetime cancer risk, which is not the case: a paradox.
openaire +3 more sources
The Impact of Natural Organic Matter on Floc Structure [PDF]
The removal of natural organic matter (NOM) at water treatment works (WTW) is essential in order to prevent toxic compounds forming during subsequent disinfection.
Jarvis, Peter
core +7 more sources
The goal of this study was to compare the coenopopulation structure of two main stand-forming tree species of European northern taiga forest – Picea obovata Ledeb. and Pinus sylvestris L. at different stages of post-fire successions.
Natalia Stavrova +2 more
doaj +1 more source
Bluegills Lepomis macrochirus R. provide popular sport fisheries but the quality of these fisheries has declined across much of their range. Factors that may influence bluegill demographics were examined in 18 Midwestern (USA) impoundments which ...
Paul H. Michaletz
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The impact of fish predation and cyanobacteria on zooplankton size structure in 96 subtropical lakes. [PDF]
Zooplankton are relatively small in size in the subtropical regions. This characteristic has been attributed to intense predation pressure, high nutrient loading and cyanobacterial biomass.
Zhang J +7 more
europepmc +2 more sources
Crustacean zooplankton size structure in 27 aquaculture lakes was studied to test the hypothesis that larger size structure is associated with higher grazing pressure. Mean body length of crustaceans was positively correlated with increasing Chl a (r(2) =
Wang, Songbo +4 more
core +1 more source
Oceanographic conditions in the northern of the Humboldt Current System (NHCS) in 2023 were warm, due to the presence of El Niño 2023-2024. The Instituto del Mar del Peru (IMARPE) carried out five marine scientific activities applying hydroacoustic to ...
Pedro Ramiro Castillo +6 more
doaj +1 more source
Morpho-physiological description of gray whales landed in the North Pacific in XX century
Biostatistical data are presented for 1300 gray whales belonged to the California-Chukotka population (East Pacific gray whales) and landed in the waters of Far East of Russia in 1980-2000s and for 148 gray whales belonged to the Korea-Okhotsk population
Sergey A. Blokhin, Denis I. Litovka
doaj +1 more source
The Effective Size of a Hierarchically Structured Population [PDF]
A knowledge of the effective size of a population (Ne ) is important in understanding its current and future evolutionary potential. Unfortunately, the effective size of a hierarchically structured population is not, in general, equal to the sum of its parts. In particular, the inbreeding structure has a major influence on Ne . Here I link Ne to Wright'
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Chironomidae larvae may represent more than 70% of total Arthropoda numbers in hypersaline waters. Crimea, the largest peninsula of the Black Sea, has more than 50 hypersaline water bodies of marine and continental origin.
N. V. Shadrin +3 more
doaj +1 more source

