C. Ralph results 193
· Newest (Page 1/8, per page 25)
Author: C. Ralph ×Clear All Filters
Search Results
Motivation The database initiated by the Mountain Invasion Research Network (MIREN) is one of the few globally implemented standardized vegetation surveys in mountains. The focus is on collecting plant species occurrences at 5‐year intervals along and adjacent to mountain roads spanning elevational gradients, with the goal of providing critical information about the ongoing spread of non‐native plants and the potential impacts...
Ontogenetic Sequence of Differential Gene Expression in Predator‐Induced Daphnia pulexNARA Subscribed
In response to predators, many Daphnia species develop inducible morphological defenses. These traits are phenotypically plastic, meaning their production is suppressed in the absence of the predator. While previous studies have identified several neurohumoral factors and candidate genes involved in the development of the defenses, the involvement of specific genes and factors remains uncertain, and minimal information is avai...
Emergence, spread, and impact of high‐pathogenicity avian influenza H5 in wild birds and mammals of South America and AntarcticaNARA Subscribed
The currently circulating high‐pathogenicity avian influenza (HPAI) virus of the subtype H5 causes variable illness and death in wild and domestic birds and mammals, as well as in humans. This virus evolved from the Goose/Guangdong lineage of the HPAI H5 virus, which emerged in commercial poultry in China in 1996, spilled over into wild birds, and spread through Asia, Europe, Africa, and North America by 2021. Our objective wa...
Marine megafauna species are affected by a wide range of anthropogenic threats. To evaluate the risk of such threats, species’ vulnerability to each threat must first be determined. We build on the existing threats classification scheme and ranking system of the International Union for Conservation of Nature (IUCN) Red List of Threatened Species by assessing the vulnerability of 256 marine megafauna species to 23 at‐sea threat...
Daphnia are well known for their ability to protect themselves against various predators by developing inducible morphological, behavioural and life history defences. The influence of body size as a life history trait on behavioural defences has rarely been investigated, although it may be a decisive trait for the evolution of defensive strategies. Therefore, we investigated the behavioural reaction of the relatively small spe...
Fish predation cues induce drifting and emergence in an experimental stream mesocosm systemNARA Subscribed
Predator–prey interactions are important drivers of adaptation in aquatic communities, shaping the behavior of invertebrates with cascading effects on community dynamics. Behavioral responses, such as moving with the downstream current (drift) or altering the timing of emergence, are strategies that reduce the risk of predator encounters. These prey responses have been extensively studied over the last decades. However, much o...
Global Homogenisation of Plant Communities Along Mountain Roads by Non‐Native Species Despite Mixed Effects at Smaller ScalesNARA Subscribed
Aim Mountain ecosystems are experiencing increased invasion of non‐native plants. These increases in non‐native species put mountains at risk of biotic homogenisation and a reduction of biodiversity. Our study aims to test if non‐native plant species are contributing to biotic homogenisation along roadways in mountain regions and how this changes along elevation gradients and across spatial scales. Location 18 globally distrib...
John Raven, FRS, FRSE: a truly great innovator in plant physiology, photosynthesis and much moreNARA Subscribed
This is a tribute to a truly inspirational plant biologist, Prof. John A. Raven, FRS, FRSE (25th June 1941– 23rd May 2024), who died at the age of 82. He was a leader in the field of evolution and physiology of algae and land plants. His research touched on many areas including photosynthesis, ion transport, carbon utilisation, mineral use, such as silicon, iron and molybdenum, the evolution of phytoplankton, the evolution of...