In botany,a stoma,also called a stomate,is a pore found in the epidermis of leaves,stems,and other organs,that controls the rate of gas exchange between the internal air spaces of the leaf and the atmosphere. The pore is bordered by a pair of specialized parenchyma cells known as guard cells that regulate the size of the stomatal opening.
Paleobotany,also spelled as palaeobotany,is the branch of botany dealing with the recovery and identification of plant remains from geological contexts,and their use for the biological reconstruction of past environments (paleogeography),and the evolutionary history of plants,with a bearing upon the evolution of life in general. A synonym is paleophytology. It is a component of paleontology and paleobiology. The prefix palaeo- or paleo- means "ancient,old",and is derived from the Greek adjective παλαιός,palaios. Paleobotany includes the study of terrestrial plant fossils,as well as the study of prehistoric marine photoautotrophs,such as photosynthetic algae,seaweeds or kelp. A closely related field is palynology,which is the study of fossilized and extant spores and pollen.
Olivia O'Leary is an Irish journalist,writer and current affairs presenter.
Karin Dubsky is a German-Irish marine ecologist working in Trinity College Dublin,notable as an environmental activist,the coordinator and co-founder of Coastwatch Europe,an environmental NGO and a member of the European Environmental Bureau.
Ginkgo adiantoides is an extinct ginkgo species in the family Ginkgoaceae from the Late Cretaceous to the Miocene.
Asterotheca is a genus of seedless,spore-bearing,vascularized ferns dating from the Carboniferous of the Paleozoic to the Triassic of the Mesozoic.
Shyamala "Shya" Chitaley was an Indian American Paleobotanist who had a nearly 60-year career of teaching and research in both the United States and India. She was the founder and first curator of the paleobotany department at the Cleveland Museum of Natural History,winner of the 2010 Botanical Society of America Award for Contributions to Paleobotany,and author of approximately 150 publications.
Lepidopteris is a form genus for leaves of Peltaspermaceae,an extinct family of seed plants,which lived from around 260 to 190 million years ago,from the Late Permian to Early Jurassic. Fossils of the genus have been found across both hemispheres. Nine species are currently recognized.Lepidopteris was a common and widespread seed fern,which survived the Permian-Triassic extinction event but was largely wiped out by the Triassic-Jurassic extinction event. Lepidopteris callipteroides is especially common between the first two episodes of the Permian-Triassic extinction event,and L. ottonis forms a comparable acme zone immediately before the Triassic-Jurassic extinction event. Lepidopteris would persist into the Early Jurassic in Patagonia,represented by the species Lepidopteris scassoi.
The Trinity Centre for Asian Studies (TCAS) is a multidisciplinary teaching and research centre for East Asian scholarship at Trinity College in Dublin,Ireland.
Lynn Ruane is an Irish politician who has served as an independent Senator for the Dublin University constituency in Seanad Éireann since April 2016. She was the President of the Trinity College Dublin Students' Union from 2015 to 2016.
Annette Jocelyn Otway-Ruthven was an Irish historian specialising in medieval Irish history,and was among the earliest female academics appointed in Trinity College Dublin.
Jane Ohlmeyer,,is a historian and academic,specialising in early modern Irish and British history. She is the Erasmus Smith's Professor of Modern History (1762) at Trinity College Dublin and Chair of the Irish Research Council,which funds frontier research across all disciplines.
Rachel Claire EvansFLSW is a Welsh chemist based at the University of Cambridge and a fellow of Jesus College,Cambridge. She works on photoactive polymer-hybrid materials for solar devices,including organic photovoltaics and stimuli-responsive membranes.
Linda F. Hogan is an Irish ethicist,ecumenist and academic,specialising in Christian ethics,political ethics,human rights,gender,and ecumenism. She is Professor of Ecumenics at Trinity College Dublin,where she was also its vice-provost from 2011 to 2016. She worked as a lecturer at the University of Chester and University of Leeds before joining the staff of Trinity College,Dublin.
Margaret E. Collinson is a paleobotanist at Royal Holloway,University of London,United Kingdom.
Linda E. Doyle is an Irish academic and educator who is the 45th Provost of Trinity College Dublin,the university's chief officer,having assumed the office in August 2021. An electrical engineer,she has had a long academic career at Trinity,from the 1990s,most recently as Professor of Engineering and the Arts,in addition to holding other management roles such as Dean of Research. She has also led one telecommunications research centre at the university,and was the founding director of another,the multi-institution organisation known as CONNECT. Doyle has worked as a member of regulatory and advisory bodies in both Ireland,on broadband network strategy,and the UK,on mobile spectrum allocation. She is or has also been a director of public outreach projects such as Science Gallery Dublin and its international network,of two non-profit art galleries,and of two university spin-off companies.
Pterophyllum is an extinct form genus of leaves known from the Carnian to the Maastrichtian,belonging to the Bennettitales. It contains more than 50 species,and is mainly found in Eurasia and North America.
Suzanne Crowe is an Irish anaesthesiologist,intensivist,and current president of the Medical Council of Ireland.
Cuticle analysis,also known as fossil cuticle analysis and cuticular analysis,is an archaeobotanical method that uses plant cuticles to reconstruct the vegetation of past grassy environments. Cuticles comprise the protective layer of the skin,or epidermis,of leaves and blades of grass. They are made of cutin,a resilient substance that can preserve the shapes of underlying cells,a quality that aids in the identification of plants that are otherwise no longer visible in the archaeological record. This can inform archaeobotanists on the floral makeup of a past environment,even when surviving remains from the plants are limited. Plant cuticles have also been incorporated into other areas of archaeobotanical research based on their susceptibility to environmental factors such as pCO2 levels and stresses such as water deficit and sodium chloride exposure. Such research can help to reconstruct past environments and identify ecological events.
Jane Stout FRES is an Entomologist and Ecologist in Ireland. She is a professor of Ecology and Vice President for Biodiversity &Climate Action,at Trinity College Dublin,is current President of the Royal Entomological Society and is an expert in pollination ecology.
