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Introduction
My PhD looked at controls on primary production in shallow tropical freshwater. Since then, I've moved away from nutrient/water chemistry and now focus on terrestrial ecology, in particular entomology and species ID/taxonomy. i specialise in leaf beetles (Chrysomelidae) and ran the UK Chrysomelid Recording Scheme. I am an Associate Lecturer in Environmental Science and Science Communication at the Open University, and with a foot in the Arts am also a professional poet.
Current institution
Publications
Publications (33)
The Species Status project is a new initiative, that provides up-to-date assessments of the threat status of various invertebrate taxa using the internationally accepted guidelines developed by the International Union for Conservation of Nature (IUCN) (see IUCN, 2012a,b 2013). It is the successor to the JNCC’s Species Status Assessment project whic...
See here for details (and ordering - it can't be provided via a full-text request) http://www.field-studies-council.org/publications/pubs/seed-and-leaf-beetles.aspx
A survey of style and technique in spoken word and poetry performance, with a primarily UK focus. It charts the history and range from early slam, hip-hop and dub poetry through to contemporary approaches.
The effects of Covid restrictions on UK entomology - in particular on public interest and citizen science. Published in Antenna (Bulletin of the Royal Entomological Society) 44(3): 109-112.
Here, we determine annual estimates of occupancy and species trends for 5,293 UK bryophytes, lichens, and invertebrates, providing national scale information on UK biodiversity change for 31 taxonomic groups for the time period 1970 to 2015. The dataset was produced through the application of a Bayesian occupancy modelling framework to species occu...
No. 34 of the Naturalists Handbooks series. Topics cover life history, biology, the beetles' environment, natural enemies and interactions with humans. There is a key to the adults of British genera, discussion of juvenile stages, and a chapter covering study techniques and materials.
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.
Climate has been widely regarded as the main determinant of the geographical distribution of species. Biotic interactions between co-occurring species, however, are an important additional influence. We review the importance of interactions with food and nectar plants (as resources) in determining the distribution of phytophagous and pollinating in...
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...
The article can be downloaded from http://www8.open.ac.uk/opencetl/files/opencetl/file/ecms/web-content/Hubble-D-2009-COLMSCT-Final-Report-Improving-student-participation-in-e-learning-activities.pdf
Proposed redevelopment work in Petersfield, Hampshire required capture and translocation of Slow-worms to fulfil the legal obligations of 1981 Wildlife and Countryside Act (as amended). Numbers of adult males, adult females and juveniles were recorded. Only 3 of 577 Slow-worms captured were found moving or basking on the surface. On days with high...
Lake Naivasha is a shallow freshwater lake in the Rift Valley of Kenya. Since the 1980s, when the lake showed a seasonal shift between diatom and cyanobacterial dominance it has become moderately eutrophic. Its algal assemblage is now dominated by a persistent Aulacoseira italica population both numerically and in terms of contribution to overall p...
Lake Naivasha, a shallow tropical lake in Kenya's Rift Valley, has an unstable water column and is moderately eutrophic. Nutrient (bottom-up) control of primary production is more important than grazing (top-down) control. Experimental nutrient enrichment was used to investigate bottom-up control in more detail. Minor nutrients were not found to be...
The floating water fern Salvinia molesta has occurred in Lake Naivasha since the early 1960s and during this period has obstructed fishing activities and navigation. In recent years the extent of Salvinia has declined markedly. Since 1988, a second floating weed, Eichhornia crassipes (water hyacinth), has colonised the lake. Salvinia formed large m...
Light is the factor that fundamentally determines the level of primary production. Primary productivity is controlled by bottom-up factors (nutrient levels), with secondary effects due to biological factors (zooplankton grazing). The light regimen experienced by algae is determined largely by mixing of the water column. The processes of photoinhibi...
Aquatic ecosystem health is often defined in terms of an earlier 'preferred' state described by earlier observations or palaeolimnology. Many tropical lakes are deteriorating, but few have a known history. Lake Naivasha (Kenya) however may be unique in having a 30000-year palaeoecological history during which it has undergone major fluctuations. It...
Although productivity is primarily controlled by bottom-up factors (nutrient levels), there are secondary effects caused by biological factors such as zooplankton grazing and algal self-shading. The measurement of grazing effects and determination of the contributions of different nutrient pools should elucidate the roles of nutrient levels and bio...
A low-toxicity method is described for the analysis of low concentrations of nitrate nitrogen (NO3-N) using columns of Devarda’s Alloy in a matrix of fused alumina anti-bumping granules. The method was developed to solve logistical problems inherent in the use of cadmium-based methodologies in a developing nation and compared favourably with the ac...
Questions
Questions (3)
Two linked questions really:
1. Does anyone know of work indicating Chaetocnema hortensis might be a species-complex?
2. Does anyone know of British Chaetocnema mannerheimi records?
I have Borowiec's monographs on Afrotropical Cassidinae, his recent works on Cassidinae of Madagascar, and Grobbelaar, Scholler and Biondi's various publications which are available on ResearchGate, but would like to know if there's any other readily available material on this subject, including Bruchinae, Orsodacnidae and Megalopodidae as well as the other chrysomelid subfamilies?
