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Dr. Stephen Waldren

Assoc Prof/ Curator of Botanic Gardens (Botany)
ANATOMY BUILDING
      
Profile Photo

Dr. Stephen Waldren

Assoc Prof/ Curator of Botanic Gardens (Botany)
ANATOMY BUILDING

 Stephen.Waldren@tcd.ie

 3531896 2075


  ADAPTATION   AMPHIBIOUS PLANTS   AQUATIC MACROPHYTES   ASSIMILATION   Biodiversity   BIOGEOGRAPHY   Biosphere   Botany   CO2   COLONIZATION   COMMUNITY   Conservation Biology   CONSERVATION GENETICS   CREEPING BUTTERCUP   DEMOGRAPHY   DUCIE   Ecology   Endangered Species   Environmental Biology   Environmental Conservation   Evolutionary Biology   FLOODING   Flora of Ireland   Genetic Mapping, Gene Sequence   Grazing ecology   HENDERSON   HENDERSON ISLAND   HERITABILITY   History of the Irish Flora   ISLAND CONSERVATION   LEAF   LEAF SHAPE   LEAVES   LIMESTONE ISLAND   Molecular Biology   Molecular systematics   Natural History   Natural Resources   OENO   Peperomia systematics   PHENOLOGIES   PHOTOSYNTHETIC RATE   Physiology of flooding tolerance   PHYTOCHEMICALS   PITCAIRN   Plant Nutrition   PLANT PHENOLOGY   Plant systematics   Plant Taxonomy   PLANTS   POLYNESIA   POPULATION BIOLOGY   RANUNCULUS REPENS L.   Saltmarsh ecology   Seed genebanks   SOUTH-CENTRAL PACIFIC   Systematic Biology   Systematics   Tropical Biology   TROPICAL FOREST   Turlough ecology   TURLOUGHS   Vegetation and flora of Pitcairn islands   VEGETATION COMMUNITIES   Vegetation ecology   Western European endemic plants   WETLAND PLANTS   Wetlands
Project Title
 Biodiversity and environmental change: an integrated study encompassing a range of scales, taxa and habitats
From
Jan 2006
To
July 2009
Summary
This research cluster, involving researchers from eight institutions, will provide an integrative multi-disciplinary research framework for national and local biodiversity policy in Ireland. Core research in the cluster directly addresses the protection and management of ecological resources in the context of pressures that might lead to environmental change by focusing on habitat fragmentation and loss, impacts of non-native species, climate change, pollution and resource management. The research will also extend capability by developing fundamental biodiversity research and capacity building in taxonomic skills as well as biodiversity indicators and biomonitoring tools. Additionally, two cross-cutting research projects will make specific progress in the inventory and output of taxonomic data and in the understanding of political processes, including public participation, that also shape biodiversity policies. While utilising national information were appropriate primary data collection will be concentrated in the greater County Clare area to maximise integration across disciplines, habitats, taxa and drivers of change. Desk studies, workshops and working groups will synthesise current knowledge and identify priority areas for future research. Our strategic aim is to build a foundation for collaborative biodiversity research capacity in Ireland through a network of researchers delivering the high quality multidisciplinary research required for sustainable management of Ireland's biodiversity.
Funding Agency
Environmental Protection Agency (~€1.6 million)
Programme
ERTDI
Project Type
Cluster
Project Title
 Assessing the Conservation Status of Turloughs
From
Jan 2006
To
Jan 2010
Summary
This integrated, multidisciplinary project will for the first time integrate hydrological, biological and chemical nutrient data from selected turloughs. This novel approach will involve close collaboration between zoologists, botanists, limnologists and hydrogeologists with excellent track records of research in relevant areas. This team will collate existing disparate data, and generate a very large amount of novel data, in the key areas of: . turlough hydrology, . vegetation description, . aquatic algal and invertebrate communities, . soil and water nutrient chemistry. Standard, well-tested methodologies will be used throughout; the novel aspect of this project is in the integration of what are too often disparate disciplines. Integrated, consistent data drawn from the main research areas outlined above will be used to develop new models relating hydrology with turlough ecology, thereby providing improved ecological understanding of the main factors and processes affecting turlough biota. This will be used to formulate scientifically sound prescriptions for both monitoring and maintaining the international conservation value of this EU priority habitat.
Funding Agency
National Parks & Wildlife Service (~€0.8 million)
Project Title
 Plant Conservation in the Kachenjunga National Park, Nepal
From
Oct 2008
To
Oct 2011
Summary
This project will examine threats to the alpine plant communities, their traditional use by indigenous ethnic minority groups, and devise ways of ensuring conservation of the regions highly specialised plant diversity while also ensuring the sustainable livelihoods of local communities
Funding Agency
IRCSET
Programme
Embark
Project Type
PhD
Person Months
36
Project Title
 Conservation biology of Trichomanes speciosum
From
Oct 2008
To
Apr 2012
Summary
This project, a collaboration between the National Botanic Gardens and TCD, will examine the conservation biology of the Killarney Fern (Trichomanes speciosum), a species listed on the EU Habitats Directive. The project will develop appropriate monitoring protocols for the independent gametophyte and sporophyte generations, examine the level of threat to different populations, and assess the genetic diversity within and among Irish populations.
Funding Agency
NPWS/National Botanic Gardens
Project Type
PhD
Person Months
36
Project Title
 Quantifying links between turlough vegetation community diversity and hydrology
From
Oct 2005
To
Oct 2008
Summary
This project will derive quantitative relationships between the vegetation of turloughs (priority EU habitats, largely restricted to Ireland) and the incidence of flooding. Vegetation communities in a range of turlough basins will be described quantitatively, thereby providing great improvement on currently available qualitative descriptions. These data will be used to describe how vegetation changes along gradients of flooding, using data derived from continuously monitored water depth in selected turlough basins, and this approach will be used to derive predictive models of turlough vegetation in relation to flooding. The information provided will help to deliver both environmental and biodiversity conservation policy.
Funding Agency
Environmental Protection Agency (€75,000)
Programme
ERTDI
Project Type
PhD Scholarship

Page 1 of 4
Details Date
BGCI/IABG European Botanic Gardens Consortium, Irish representative from 1995
Irish Advisory Council for Genetic Resources for Food and Agriculture from 1998
Editorial Board, Biology & Environment (Royal Irish Academy) from 2000
Editorial Board, Biological Conservation (Elsevier) From 2002
Director, The Irish Naturalist's Journal Ltd (TCD representative) from 2003
Director, PlantNetwork (formerly PlantNet), the UK & Ireland network of plant collections from 1996
Director, Botanical, Environmental and Conservation Consultants Ltd. from 2001
Director, Genetic Heritage Ireland (Irish Genetic Resources Cosnervation Trust) from 1995
Hon Treasurer, Genetic Heritage Ireland (Irish Genetic Resources Conservation Trust) from 1998
Gill L., Bhatnagar S., Bijkerk E., Regan S., Somlai C., Naughton O., Ghosh B., Waldren S., Coxon C., Johnston P., EcoMetrics - Environmental Supporting Conditions for Groundwater-dependent Terrestrial Ecosystems, Wexford, Ireland, Environmental Protection Agency, 2022, 1 - 54pp, Book, PUBLISHED  URL
Bhatnagar S., Gill L.W., Regan S., Waldren S., Ghosh B., A nested drone-satellite approach to monitoring the ecological conditions of wetlands, ISPRS Journal of Photogrammetry and Remote Sensing , 174, 2021, p151 - 165, Journal Article, PUBLISHED  DOI
Bhatnagar S., Gill L.W., Waldren S., Sharkey N., Naughton O., Johnston P., Coxon C., Morrissey P., Ghosh B., Ecohydrological metrics for vegetation communities in turloughs (ephemeral karstic wetlands), Ecohydrology, 14, 2021, pe2316 , Journal Article, PUBLISHED  DOI
Perrin, P.M. & Waldren, S. , Vegetation richness and rarity in habitats of European conservation value in Ireland., Ecological Indicators, 117, 2020, pdoi.org/10.1016/j.ecolind.2020 , Journal Article, PUBLISHED
Penk, M. R., Perrin, P. M., & Waldren, S., Above- to below-ground vegetation biomass ratio in temperate north-east Atlantic salt- marshes increases strongly with soil nitrogen gradient., Ecosystems, 23, 2020, p648 - 661, Journal Article, PUBLISHED
Penk, M.R., Perrin, P.M., Kelly, R., O'Neill, F. & Waldren, S., Plant diversity and community composition in temperate northeast Atlantic salt marshes are linked to nutrient concentrations., Applied Vegetation Science, 23, 2020, p3 - 13, Journal Article, PUBLISHED
Bhatnagar S., Gill L.W., Regan S., Naughton O., Johnston P.M., Waldren S., Ghosh B., Mapping vegetation communities inside wetlands using Sentinel-2 imagery in Ireland, International Journal of Applied Earth Observations and Geoinformation, 88, 2020, p10283 , Journal Article, PUBLISHED  DOI
Walsh, A., Sullivan, C., Waldren, S. & Finn, J., Development of a scoring method to identify important areas of plant diversity in Ireland., Journal for Nature Conservation, 47, 2019, p1 - 11, Journal Article, PUBLISHED
Penk, M.R., Wilkes, R., Perrin, P.M. & Waldren, S., Nutrients in saltmarsh soils are weakly related to those in adjacent coastal waters., Estuaries and Coasts, 42, 2019, p675 - 687, Journal Article, PUBLISHED
Roche, J.R., Mitchell, F.J.G., Waldren, S. & Stefanini, B., Palaeoecological evidence for survival of Scots Pine through the late Holocene in Western Ireland: Implications for ecological management., Forests, 2018, phttps://doi.org/10.3390/f90603 , Journal Article, PUBLISHED
  

Page 1 of 7
Waldren, S., Turloughs: Hydrology, Ecology and Conservation, Dublin, Ireland, National Parks & Wildlife Service, 2015, p1 - 897, Report, PUBLISHED
Waldren, S., Turloughs: Hydrology, Ecology and Conservation. Appendix - Site Reports, Dublin, Ireland, National Parks & Wildlife Service, 2015, p1 - 497, Notes: [Relevant for Wildlife Act and EU police implementation], Report, PUBLISHED
Waldren, S., Recovery programmes for threatened Irish plants, Ensconews, 1, 2006, p12 - 13, Journal Article, PUBLISHED
Waldren, S., Kingston, N., Smyth, N., Warren, J. & Warren, C., Integrated plant conservation on Pitcairn Island, south-central Pacific Ocean, BG Journal, 2, 2005, p22 - 24, Journal Article, PUBLISHED
Waldren, S., Kingston, N., Smyth, N., Warren, J. & Warren, C., Plant conservation activities on Pitcairn Island, Flora English Nature, 2004, p14 - 15, Journal Article, PUBLISHED
Uniquely Irish III. The turlough form of Ranunculus repens in, editor(s)M. Otte , Wetlands of Ireland. Distribution, Ecology, Uses and Economic Value, Dublin, University College Dublin Press, 2003, pp157 - 159, [Lynn, D.E. & Waldren, S.], Book Chapter, PUBLISHED
Lynn, D.E., Kingston, N.E., Martin, J.R. & Waldren, S., Biodiversity in Dublin city urban parklands, Biodiversity in the City: Proceedings of a one-day International Conference, Dublin, September 12, edited by L. Dunne , Environmental Institute, University College Dublin, 2002, Conference Paper, PUBLISHED
Conservation of Island Plant Populations and Communities (1.6.5.7), H. Heatwole, Encyclopedia of Life Support Systems: Oceanic Islands, Paris, France & Oxford, UK, UNESCO Publishing-Eolss Publishers, 2002, [Waldren, S.], Item in dictionary or encyclopaedia, etc, PUBLISHED
Conservation of biodiversity. In: Action Plan for Botanic Gardens in the European Union in, editor(s)Cheney, J., Navarro, J.N. & Wyse Jackson, P.S. , Action Plan for Botanic Gardens in the European Union, Meise, National Botanic Garden of Belgium for Botanic Gardens Conservation International, 2000, [Waldren, S. & Wyse Jackson, P.S.], Book Chapter, PUBLISHED
Waldren, S. & Kingston, N., Pitcairn's floral beauty, Technology Ireland, 31, 1999, p32 - 36, Journal Article, PUBLISHED

  


Page 1 of 2
Award Date
Ford Conservation Award- Irish winner with James Martin 1997