Ingrid Jüttner

Ingrid Jüttner
Amgueddfa Cymru - Museum Wales

Dr.rer.nat. FLS FRGS

About

101
Publications
41,022
Reads
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2,432
Citations
Citations since 2017
30 Research Items
874 Citations
2017201820192020202120222023050100150
2017201820192020202120222023050100150
2017201820192020202120222023050100150
2017201820192020202120222023050100150
Introduction
I work as a researcher at Amgueddfa Cymru - National Museum Wales. Diatom applications in water quality assessments, and the diatom floras of Britain and Ireland, the Falkland Islands and the Himalaya form the core of my work. I currently work on diatom communities of semi-natural habitats and upland areas in Britain and on the diatom flora of the River Wye catchment.
Additional affiliations
April 2002 - present
National Museum Wales
Position
  • Researcher
Description
  • Taxonomy, ecology and biogeography of diatoms
February 2000 - January 2002
Natural History Museum, London
Position
  • Fellow
Description
  • Ecology and taxonomy of Himalayan diatoms
March 1997 - December 1999
GSF-Research Centre for Environment and Health
Position
  • Research Officer
Description
  • Ecotoxicology of endocrine disrupters
Education
March 1992 - May 1995
March 1986 - February 1990
November 1983 - February 1986
Universität Heidelberg
Field of study
  • Biology

Publications

Publications (101)
Article
Six species of the genus Achnanthidium Ktz. with straight terminal raphe fissures including Achnanthidium caledonicum (Lange-Bert.) Lange-Bert., A. sieminskae Witkowski, Kulikowskiy & Riaux-Gob., Achnanthidium neomicrocephalum Lange-Bert. & F.Staab and Achnanthidium minutissimum (Ktz.) Czarn. were studied using light and scanning electron microscop...
Article
This is a taxonomic study of cymbelloid diatoms from the River Adegoy (Krasnodar Territory, Russia). During the survey 24 taxa were recorded including a new species of Delicatophycus. The morphology of Delicatophycus porosus sp. nov. was examined using light and scanning electron microscopy and compared to nine similar species. The new species can...
Article
During the study of diatom samples from a brackish estuary near the reserve headquarters of the Kandalaksha State Nature Reserve at Por’ya Guba 16 taxa belonging to the genus Navicula were found. One taxon, N. curtisternoides sp. nov., is described and compared with morphologically similar species. The type specimens of two names (N. eidrigiana and...
Article
The Welsh National Herbarium is the most important collection of herbarium specimens in Wales, and the third most important in the United Kingdom. Originating over a century ago, its expansion during the 20th century reflects the growth in awareness of the significance of plant sciences in Wales. Located in Amgueddfa Cymru – National Museum Wales,...
Article
During a survey of the diatom flora of the Adegoy River (Krasnodar Territory, Russia), an unknown Fragilaria species (Bacillariophyta) was found that could not be identified using the currently available literature and here we describe it as a new species. The morphology of Fragilaria irregularis sp. nov. was studied using light and scanning electr...
Article
This is the first detailed taxonomic study of the genus Navicula in the Krasnodar Territory of the Caucasus region, Russia. During the study of the genus in waterbodies of the Adegoy River valley 15 taxa were recorded. Two species, N. adegoyensis sp. nov. and N. pseudocryptofallax sp. nov., are described as new to science. Their morphology is studi...
Article
The diversity of the genus Navicula including 29 species, one species new to science (Navicula trophicatrixoides Chudaev, sp. nov.), one new to the flora of Russia (N. alineae), and 15 species new for the Voronezh Region, is documented from waterbodies located in the museum-reserve “Divnogorye” and areas in its vicinity. It is supposed that N. anto...
Article
Type material of Navicula exilis and Navicula cryptocephala from the Kützing collection at the Natural History Museum, London, was re-investigated in light and electron microscopy. The morphology of these species was studied in detail using original materials and the nomenclature and previous studies of type material summarized. Navicula exilis is...
Article
Cocconeis intermedia was originally described by Peragallo & Héribaud in Héribaud (1893) as a fossil diatom species from samples collected in the Puy-de-Dôme department, Auvergne-Rhône-Alpes region (France). After the first brief description, the species was mostly mentioned as C. placentula var. intermedia in classic floristic books and, over time...
Article
Full-text available
Many freshwaters in base-poor upland areas of Britain continue to be affected by acidification as a result of deposition of air pollutants, and agricultural and forestry practices. The effects of land use and annual liming on stream chemistry, diatoms and salmon populations were investigated over eight years in the upper catchment of the River Wye,...
Conference Paper
Diatoms were investigated in the littoral of Rara Lake, Nepal, to investigate the impact of land use, substratum type and season. Species composition and diversity differed between areas, seasons and between stones, sediment and macrophytes. Both communities on stones and on sediment differed between the settlement and forested areas, but communiti...
Article
Full-text available
Achnanthes parallela J.R.Carter was described from Lindean, Scotland, a freshwater species widely distributed in lochs of the southern Scottish uplands. It is currently regarded as a synonym of Achnanthes petersenii Hustedt first described from Svalbard. Investigation of type material for both taxa using light and scanning electron microscopy revea...
Article
Full-text available
Background and aims – Two unknown benthic diatom species belonging to the genus Achnanthidium Kütz., and found in French and Nepalese freshwater habitats, were investigated. Both species are here described as new and compared with the original material of Achnanthes minutissima var. macrocephala Hust. [≡ Achnanthidium macrocephalum (Hust.) Round &...
Article
During a survey of freshwater diatoms from a mountain lake, Lake Congqiancuo, Haizishan Nature Reserve, Yading, Daocheng County, Sichuan Province, China, a new Halamphora species, Halamphora daochengensis sp. nov. was found. A detailed morphological description of the new species is presented, based on light and scanning electron microscopy. The ma...
Article
Full-text available
A new Delicata species, Delicata chongqingensis sp. nov. was found during a survey of freshwater diatoms in the Daning River, Chongqing municipality, China. A detailed morphological description of D. chongqingensis is presented, based on light and scanning electron microscopy. Delicata chongqingensis has dorsiventral, semi-lanceolate valves with a...
Article
During the first study of the diverse diatom assemblages in Rara Lake, the largest lake in Nepal, 11 species of Gomphonema, belonging to six morphological groups, and Gomphoneis qii could be investigated using light and scanning electron microscopy. Five new Gomphonema species are described: Gomphonema subodhii, Gomphonema parasundaense, Gomphonema...
Article
We document the morphology of 15 species of Eunotia from freshwater habitats in the Falkland Islands using light and electron microscopy, and describe four new species, Eunotia australovalida, Eunotia inconspicua, Eunotia floweriana and Eunotia latecapitata. Diatom assemblages were studied from a range of habitats on East Falkland, West Falkland, S...
Article
Full-text available
During a survey of freshwater diatoms from streams in North Tianmu Mountain, Liyang City, Jiangsu Province, China, a new Cymbella species, Cymbella liyangensis sp. nov. was recorded. A detailed morphological description of C. liyangensis is presented, based on light and scanning electron microscopy. The main features of C. liyangensis are: moderate...
Article
Full-text available
High altitude ecosystems have important natural ecological functions but are under increasing impacts from human activities and climate change. A detailed analysis of the water chemistry of Lake Rara, a high mountain lake in western Nepal, was carried out in October 2015 and April 2016. A total of 31 water samples were collected. Major ions (Ca²⁺,...
Article
Four new species are described in the genus Odontidium from the Himalaya in Nepal, and the Garhwal and Kumaon regions in India using light and electron microscopy. We compare the Himalayan taxa to recently described species from the European Alps and Macedonia. In addition we illustrate some specimens of Diatoma rupestris, a species recently descri...
Poster
Full-text available
The website ‘Diatom Flora of Britain and Ireland’ is an online identification tool for researchers with an interest in diatom taxonomy and ecology. It documents taxa found in Britain and Ireland using light and electron microscope images and incorporates recent taxonomic revisions. The website is hosted by Amgueddfa Cymru – National Museum Wales (h...
Article
Full-text available
The type materials of Odontidium hyemale, Odontidium anomalum var. longissimum (longissima), Diatoma hiemale var. maxima (maximum), Odontidium anomalum, and additional materials from the Faroe Islands, Austria, Switzerland, Italy and Macedonia were studied in LM and SEM. The nomenclature of these taxa is explained and original drawings presented. I...
Article
Full-text available
Two new taxa similar to Achnanthidium minutissimum were common and abundant in samples collected during a survey of benthic diatoms in watercourses from mainland Portugal. They are described here as A. duriense, sp. nov. and A. lusitanicum, sp. nov. In addition, the recently described A. pseudolineare is reported from various localities and its eco...
Chapter
Langzeiteffekte von Umwelteinflüssen dokumentieren sich in den Ablagerungen von Ozeanen, Seen, Mooren, Grundwasser, in terrestrischen Ökosystemen, wie z. B. Böden, aber auch im Eis der Polarregionen. In der Paläolimnologie verwendet man physikalische, chemische und biologische Informationen aus dem Sediment, um die früheren Umweltbedingungen eines...
Article
Gomphonema parvulum Kützing and morphologically similar species can be difficult to distinguish while differing markedly in their ecology. It is important to identify these species correctly if the ecological status of their habitats is to be assessed accurately. Here, two species in this group are documented using light and scanning electron micro...
Article
Microscope slides containing material from Sierra Leone used by Woodhead and Tweed to describe eight new Surirellaceae taxa in the mid-twentieth century were reinvestigated. Only two taxa were found on the original slides, Surirella approximata Woodhead & Tweed and S. engleri [var. constricta] f. minor Woodhead & Tweed. The valve variability of S....
Data
During a survey of the diatom flora from a sediment core from Lake Panch Pokhari in the Nepalese Himalaya, four new Eunotia species were recorded and described: E. igorii Krsti´c, Levkov&Pavlov, E. zechii Krsti´c, Levkov&Pavlov, E. panchpokhariensis Krsti´c, Levkov& Pavlov and E. paramuscicola Krsti´c, Levkov & Pavlov. Detailed morphological descri...
Data
Full-text available
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Article
Full-text available
During a survey of the diatom flora from a sediment core from Lake Panch Pokhari in the Nepalese Himalaya, four new Eunotia species were recorded and described: E. igorii Krstić, Levkov & Pavlov, E. zechii Krstić, Levkov & Pavlov, E. panchpokhariensis Krstić, Levkov & Pavlov and E. paramuscicola Krstić, Levkov & Pavlov. Detailed morphological descr...
Article
There is increasing interest in the restoration of urban river systems because they are affected by multiple point- and diffuse-source impairments. In South Wales, these issues are exemplified by the rivers Taff and Ely, which have a well-documented history of pollution. We developed a network of river-monitoring sites to capture as many sources of...
Article
Full-text available
Springs are unique aquatic habitats that contribute significantly to local and regional biodiversity because of their high habitat complexity and the large number of different spring types. Many springs are small, but they are numerous and often of high water quality, and thus, provide habitats for species that are rare elsewhere because of their s...
Article
Full-text available
The aim of this study was to investigate for the first time the morphology, physical and chemical characteristics of three high-altitude lakes in the Gokyo Valley, Everest National Park, Nepal. The moraine-dammed glacial lakes were studied for three seasons to create baseline data. The second, third, and fourth lakes in the Gokyo Valley are deeper...
Article
Full-text available
As part of a study on the diatom flora of the Gokyo Valley, Everest National Park, Nepal, eleven species of Cymbopleura (Bacillariophyta), including two new species, Cymbopleura gokyoensis Jüttner et Van de Vijver sp. nov. and Cymbopleura emoda Jüttner et Van de Vijver sp. nov., were investigated using light and electron microscopy. Some taxa could...
Article
Species of the genus Achnanthidium including Achnanthidium pyrenaicum (Hustedt) Kobayasi and morphologically similar taxa are common and abundant in streams of the Himalaya in Nepal and north-west India. They were investigated with respect to their morphology and ecology, exploring their response to gradients in altitude, water chemistry, habitat c...
Article
Following the discovery of specimens resembling Achnanthes pseudoconspicua, the type slide of this species was investigated. The latter contained very few valves, which were documented with light microscopy. Specimens from streams and ponds of central and eastern Nepal conformed to the original diagnosis and were investigated using light and electr...
Article
Full-text available
A new genus Oricymba is described with its type species based on Cymbella japonica Reichelt. In addition, three new species are described from the Nepalese Himalaya: O. subaequalis, O. latirotundata and O. subovalis. The new genus has slightly dorsiventral or almost symmetrical valves with polar raphe endings deflected to the dorsal side. It can be...
Article
Himalayan streams, an important natural resource, are subject to numerous threats such as pollution and hydrological changes with deteriorating water quality in some areas. In order to develop diatom-based monitoring tools, we investigated diatom species composition at 206 sites in relation to variation in hydrochemistry, habitat characteristics (l...
Article
Full-text available
Three new species and one new variety of the genus Cymbella are described from the Gokyo and Dudh Koshi Valleys in Everest National Park, Nepal. Cymbella himalaspera Jüttner & Van de Vijver and C. subhimalaspera Jüttner & Van de Vijver are related to species in the group around C. aspera (Ehrenberg) H. Peragallo but differ from similar taxa with re...
Article
Full-text available
Studies on high altitude lakes in Nepal are scanty compared to other parts of the world. This preliminary study attempted to generate some baseline data on Gokyo wetlands regarding water quality and biodiversity. All the lakes in the Gokyo valley are moraine-dammed glacier lakes. Fourth Lake is the largest lake in the Gokyo valley. Temperature and...
Article
Full-text available
This paper addresses the potential impacts of climate change on high altitude lakes, in particular, those of the Everest region of Nepal, with respect to their biodiversity and pollution levels. Initial investigations indicated that the anthropogenic activities started to show the impacts in Gokyo wetlands. The sedimentation rate of 0.07 cm per...
Article
Periphytic diatoms were studied to evaluate the water quality of a newly created lake, formed by the enclosure of the formerly tidal Cardiff Bay (Wales, UK), and the effects of two inflowing rivers which drain densely populated and industrialised catchments. Seven sites in Cardiff Bay and two locations on the inflowing rivers were monitored for dia...
Chapter
Paradoxically for such a genuinely green nation as ours, problems of pollution are among the major integrating themes of Welsh rivers and their ecology. Arising from diffuse or point sources and involving a large array of inorganic and organic chemicals, pollution has affected all types of river organisms as well as many ecological processes in urb...
Article
1.Macroinvertebrates and phytobenthic organisms (e.g. diatoms) are frequently used as bioindicators of water quality, yet few studies compare their effectiveness despite both being emphasized in the EC Water Framework Directive.2.Here, as a case study, the efficacy of each group in assessing acid–base status in the catchment of the Welsh River Wye...
Article
Epiphytic and epipelic diatom assemblages were studied in relation to water chemistry and habitat character in lowland ponds of Koshi Tappu, Nepal. Epiphytic assemblages from different microhabitats, such as morphologically different plants, roots, stems, filamentous algae and decomposing leaves, within the same ponds were similar. Assemblage compo...
Article
Diatoms were examined in twelve ponds and four small lakes of the Kathmandu Valley, Nepal, to assess their biodiversity, response to environmental conditions and potential use as bioindicators for water quality. They were investigated from different substrates and relationships with water chemistry and habitat character were assessed. In total 212...
Article
This paper describes seven new Gomphonema species from the Himalaya and provides information about their ecology with respect to water chemistry and habitat character. Diatoms were collected during surveys of over 200 Himalayan streams between 1993 and 2000. The geographical distribution, which covers a 1000 km east-west range in the Himalaya of no...
Article
Full-text available
1. Acid-base status has major effects on diatoms, but there is little information on their short-term response to changing acidity. This is despite the use of diatoms as bioindicators in streams where acid episodes are important during rainstorms (hours to days) or snowmelt (days to weeks). In the Llyn Brianne experimental catchments (Wales, UK), w...
Article
We investigated the effect of 4-nonylphenol (NP) on nematode communities in the sediment of freshwater microcosms. Seven treatments were dosed with various concentrations of NP over a period of six weeks by using a controlled-release method (NPI-NP7; maximum sediment concentrations: 0.29-3.37 mg/kg dry wt). Four microcosms were not exposed to NP an...
Article
The effects of nonylphenol (NP) on phytoplankton and periphyton were studied in 230 L outdoor microcosms. Phytoplankton cell density and biomass, phytoplankton and periphyton diversity, and assemblage composition were analyzed during a four-week preapplication period, followed by six weeks of NP treatment via controlled release and a six weeks post...
Article
We investigated the effects of the endocrine disruptor nonylphenol (NP) on the zooplankton assemblages of 230 L aquatic microcosms during a four-week preapplication period, a six-week NP treatment via controlled release, and a six-week postapplication period. Zooplankton assemblage change, investigated by ordination principal response curves (PRC),...
Article
1. Diatoms are recognised as indicators in temperate streams, but only recently have assessments begun of their value in indicating stream quality in the tropics and sub-tropics. Here, we extend previous studies by assessing stream diatom assemblages in relation to water quality and habitat character in the Kathmandu Valley, and in the Middle Hills...
Article
A method of controlled release of technical nonylphenol (tNP) was developed to simulate realistic exposure in ecotoxicological studies on aquatic organisms. The direct addition of tNP from an aqueous stock solution into 50 ml of water led to a concentration decrease of 80 to 90% weight/volume (w/v) from nominal values within 48 h. The inclusion of...
Article
Single-species tests allow the assessment of chronical effects of endocrine disruptors on organisms under laboratory conditions. In the current study, three-generation tests with Ceriodaphnia reticulata and Sida crystallina were carried out to examine the influence of the synthetic hormone 17alpha-ethinylestradiol (EE) on the reproduction of these...
Article
The nematode Caenorhabditis elegans was exposed over a whole life-cycle (72 h) to several concentrations of 4-nonylphenol (NP; nominal concentrations: 0–350 μg/l). Growth and reproduction of C. elegans were enhanced at NP concentrations of 66 and 40 μg/l, respectively, with effects showing dose–response relationships. These stimulatory effects migh...
Article
Full-text available
SUMMARY 1. Surprisingly few data compare the apparent responses of diatoms and macroinvertebrates to metals in streams. We examined variation in metals, diatoms and macroinvertebrates between 51 streams in metal-mining areas of Wales and Cornwall, U.K., using a survey design with multiple reference and polluted sites. 2. To quantify variations in m...
Article
In this study the impact of nonylphenol, an estrogenic degradation product of alkylphenol polyethoxylates, on the microbial community structure in contaminated sediments of aquatic microcosms using in situ hybridization with fluorescently labeled oligonucleotides probes was investigated. A positive correlation between nonylphenol concentration and...
Article
Sediment humic substances from an acidification chronology (Pb-210- and Cs-137-dating) of GroBer Arbersee, a small cirque lake in the Bavarian Forest, Germany, have been studied by means of H-1 NMR spectroscopy. The acidification of the lake and, particularly, its catchment caused a more or less continuous decrease in diatom-inferred pH from 5.4 to...