Angela Julian

• Doctor of Philosophy
• Coordinator at Amphibian and Reptile Groups of UK

The One Health High-Level Expert Panel’s definition of One Health includes optimizing the health of people, animals (wild and domestic) and ecosystems. For many One Health practitioners, wildlife that can spread zoonoses are the focus, particularly if they can come in contact with people. However, ecosystem health is often best-indicated by less-en...

Leech predation of amphibians is known to occur in Europe. Observation of severe leech infestation affecting a common toad Bufo bufo in southern England in summer 2020, with leeches covering the toad’s eyes, throat and axillae, initiated a collaborative investigation to learn more about the occurrence of such leech predation of anurans in the UK. S...

MtDNA barcoding is regularly applied to determine the provenance of invasive species. Variation in spatial genetic structuring across a species’ range, typically high within glacial refugia and low in postglacially colonized areas, influences the precision of this approach. The palmate newt (Lissotriton helveticus) has been introduced north of its...

Context Land-use change is a key driver of biodiversity loss. Models that accurately predict how biodiversity might be affected by land-use changes are urgently needed, to help avoid further negative impacts and inform landscape-scale restoration projects. To be effective, such models must balance model realism with computational tractability and m...

A study was commissioned by NatureScot to analyse changes in the status of the adder (Vipera berus) and other native reptiles at 16 sites across mainland Scotland, the Isle of Skye and the Isle of Arran over a 30-year period from 1992-93 to 2022-24. In 2022-24, volunteer surveyors revisited sites that were previously surveyed in 1992-93 to identify...

1. Adder (Vipera berus) populations are experiencing declines in many countries, including the UK. Perceptions of adders and other venomous snakes are generally negative, making conservation of these species a challenge, and persecution remains within the top five perceived causes for adder declines in the UK. Improved understanding and attitudes a...

First record of axanthism in Common Frog (Rana temporaria) in the UK

Many herpetofauna species have been introduced outside of their native range. MtDNA barcoding is regularly used to determine the provenance of such populations. The alpine newt has been introduced across the Netherlands, the United Kingdom and Ireland. However, geographical mtDNA structure across the natural range of the alpine newt is still incomp...

Large-scale biodiversity monitoring remains a challenge in science and policy. ‘Biodiversity Observation Networks’ provide an integrated infrastructure for monitoring biodiversity through timely discovery, access, and re-use of data, but their establishment relies on an in-depth understanding of existing monitoring effort. We performed a scoping re...

The dataset comprises one 1km habitat suitability surface for each of 5073 species of mammal, bryophyte, vascular plant, lichen, insect and non-insect invertebrate. The outputs are provided as .asc files denoting habitat suitability at a spatial resolution of 1km. The map projection is OSGB 1936 (EPSG:27700). The habitat suitability surfaces repres...

ABSTRACT - ‘Vanishing Viper 2019’ was organised in the wake of continuing evidence for declines in British populations of the northern viper or adder (Vipera berus). The meeting included British participants as well as those from other European countries, whose insights suggest that the drivers of adder declines in mainland Europe are similar to th...

Appendix S1. The composition of the invited participants and additional acknowledgements. Appendix S2. Instructions given to participants in each of the tasks. Appendix S3. The final list of attributes and how they changed through the tasks. Appendix S4. Comparison of the data set with all respondents to that with only the invited participants.

Appendix S5. The dataset comprising, for each respondent, the ranks of the attributes that were considered to be the 10 greatest needs or opportunities for developing existing biodiversity monitoring programmes in the UK.

Biodiversity is changing at unprecedented rates, and it is increasingly important that these changes are quantified through monitoring programmes. Previous recommendations for developing or enhancing these programmes focus either on the end goals, that is the intended use of the data, or on how these goals are achieved, for example through voluntee...

Isolates of Pseudocercosporella herpotrichoides, causal agent of the eyespot disease of cereals, are usually classified as W-type or R-type on the basis of differential pathogenicity towards wheat and rye hosts, a distinction often correlated with cultural morphology. Polyacrylamide gel electrophoresis (PAGE) of soluble proteins was used to compare...

Disease progress of Stenocarpella macrospora (Earle) Sutton (syn. Diplodia macrospora Earle) was monitored on selected maize breeding lines over two seasons at three locations. Tagged plants were assessed at 10 day intervals for foliar lesions on a 1-9 scale and for ear rot on a 1-5 scale. The level of disease at a farm in Jos (West Africa Milk Com...

Inheritance of resistance to Stenocarpella macrospora (Earle) Sutton (syn. Diplodia macrospora Earle) ear rot of maize was studied among selected maize populations in the mid-altitude (1280 m) agro-ecological zone of Nigeria. Diallel analysis among the populations showed significant values for general combining ability (GCA) and specific combining...

Surveys were conducted on the incidence and severity of Stenocarpella macrospora (Earle) Sutton (= Diplodia macrospora Earle) on maize in the mid-altitude zone of Nigeria in 1995 and 1996. The results indicated a possible link between disease severity and plant density. Fewer symptoms were observed at altitudes below 700m. There was no significant...

Sixty nine samples of maize were collected from pre-harvest standing crops and on-farm storage facilities from 52 smallholder farms located within 4 regions of Honduras during October 1992 and November 1993. Samples were visually assessed for insect damage and fungal spoilage, and the mycoflora quantified on artificial media. The major components o...

Isolates of Pseudocercosporella herpotrichoides (Fron.) Deighton, causal agent of eyespot disease of cereals, with reduced sensitivity to the imidazole fungicide prochloraz were produced by spontaneous selection on fungicide-amended media or by successive rounds of ultra-violet (U V) irradiation of conidia. Resistance frequencies were similar to th...

R-type isolates of the cereal eyespot pathogen Pseudocercosporella herpotrichoides frequently sector whilst in culture to produce colonies with altered morphology. Variant colonies derived from both field isolates and laboratory mutants exhibiting reduced sensitivity to the fungicide prochloraz were characterized with respect to their morphology, g...