Sean Kelly results 72
· Newest (Page 1/3, per page 25)
Author: Sean Kelly ×Clear All Filters
Search Results
Over an approximate twelve-month period, between June 2021 and June 2022, the δ 15 N values of aquatic vegetation and sediments and the δ 18 O and δ 15 N values of the NO 3 − in water samples were analyzed in order to understand the sources and processes affecting nitrogen entering the northern portion of Biscayne Bay, an urban area located to the west of Miami, in the southern United States. Samples were collected from 22 sit...
Small jellyfish, large consequences: The overlooked predatory role of hydromedusae in subtropical estuarine ecosystemsNARA Subscribed
Hydromedusae are often overlooked in pelagic trophic ecology compared to large scyphozoans. We investigated the diet, prey selectivity, ingestion rates, digestion times, and predation impacts of the native Liriope tetraphylla and non‐indigenous species Cnidostoma fallax and Moerisia inkermanica in a subtropical estuary of the southwestern Atlantic. While all three species predominantly consumed copepods, L. tetraphylla exhibit...
Aim The temperature‐size rule is often described as a reduction in ectothermic asymptotic or maximum body size with warming. Although this coincides with the expectation that faster growth under warming would lead to larger sizes early in life but smaller sizes later in life, there remain few tests of changes in size across ontogeny. Here, we use > 99,000 observations of weight‐at‐age of commercially important fishes over 25 y...
Terrigenous inputs link nutrient dynamics to microbial communities in a tropical lagoonNARA Subscribed
Nutrient availability drives community structure and ecosystem processes, especially in tropical lagoons that are typically oligotrophic but often receive allochthonous inputs from land. Terrestrially derived nutrients are introduced to tropical lagoons by surface runoff and submarine groundwater discharge, which are influenced by seasonal precipitation. However, terrigenous inputs presumably diminish along the onshore–offshor...
Carbon production at shallow‐water artificial reef ecosystems relies on water column primary productivityNARA Subscribed
The attraction‐production continuum in fishery management centers on the extent to which artificial reefs increase fish production or whether they simply redistribute fish. Reef systems could produce carbon to support growth of higher trophic levels. Therefore, we aimed to understand carbon flows at lower trophic levels on shallow‐water (11 m) artificial reefs within a region which hosts an extensive artificial reef network. W...
Interplay of education and DNA methylation age on cognitive impairment: insights from the Health and Retirement StudyNARA Subscribed
Few studies have assessed the association of educational attainment on dementia and cognitive impairment through DNA methylation age acceleration, while accommodating exposure-mediator interaction effects. We evaluated the mediation role of six epigenetic clocks with dementia, cognitive impairment non-dementia, and normal cognition, while accommodating exposure-mediator interaction effects. To understand the joint association...
The tumor suppressor protein p53, a transcription factor playing a key role in cancer prevention, interacts with DNA as its primary means of determining cell fate in the event of DNA damage. When it becomes mutated, it opens damaged cells to the possibility of reproducing unchecked, which can lead to formation of cancerous tumors. Despite its critical role, therapies at the molecular level to restore p53 native function remain...