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I am a wildlife ecologist interested in the challenges faced by conservation science in low-income countries, mainly in the Afrotropics. Birds are my preferred model taxon and I have an ongoing research strand on the ecology and conservation of the heavily traded African Grey Parrots (genus Psittacus).

Other research interests include the theoretical and practical aspects of estimating species abundance, and modelling population dynamics of endangered species. 

Thoday Building, room G1

Email: s.valle@bangor.ac.uk

Tel: 01248 382365

• Professional: Fellow of the Higher Education Academy
  Higher Education Academy, 2021–2021
• PhD: Population viability and conservation of Grey Parrots on the island of Príncipe, Gulf of Guinea
  Manchester Metropolitan University, 2012–2015
• MSc: Effects of disturbance and fragmentation on avian community on Afrotropical montane rainforest of the Albertine Rift
  University of Exeter, 2009–2010
• BSc: Composition, phenology, and distribution of the avifauna of the Sabaki, River Mouth, Malindi, Kenya
  University La Sapienza of Rome, 2007

I am course director for the degrees Environmental Conservation (D447/448) and Applied Terrestrial and Marine Ecology (C180/183).

I teach the modules:

DXX-2009: Conservation Practice

DXX-4016: Conservation Science

BNS-3000: Wildlife Ecology and Conservation

DXX-2012:  Field Course on Conservation Conflicts 

2024

• Published
  Justus, W., Valle, S., Barton, O., Gresham, A. & Shannon, G., 1 Mar 2024, In: Mammal Review. 54, 3, p. 325-340 16 p.
  Research output: Contribution to journal › Article › peer-review

2023

• Published
  Shannon, G., Valle, S. & Shuttleworth, C., 3 Oct 2023, In: Ecology and Evolution. 13, 10, e10536.
  Research output: Contribution to journal › Article › peer-review

2021

• Published
  Shuttleworth, C., Brady, D., Cross, P., Gardner, L., Greenwood, A., Jackson, N., McKinney, C., Robinson, N., Trotter, S., Valle, S., Wood, K. & Hayward, M., Feb 2021, In: Conservation Science and Practice. 3, 2, e321.
  Research output: Contribution to journal › Article › peer-review
• Published
  Valle, S., Collar, N. J., Melo, M. & Marsden, S. J., 2021, In: Journal of Tropical Ecology. 36, 6, p. 293- 297
  Research output: Contribution to journal › Article › peer-review

2020

• Published
  Valle, S., Collar, N., Barca, B., Dauda, P. & Marsden, S., Jan 2020, In: Oryx. 54, 1, p. 74-76 3 p.
  Research output: Contribution to journal › Article › peer-review

2018

• Published
  Valle, S., Collar, N., W. Edwin, H. & Marsden, S., Jan 2018, In: Biological Conservation. 217, p. 428-436
  Research output: Contribution to journal › Article › peer-review

2017

• Published
  Valle, S., Collar, N. J., Harris, W. E. & Marsden, S. J., Dec 2017, In: African Journal of Ecology. 55, 4, p. 433-442
  Research output: Contribution to journal › Article › peer-review

2016

• Published
  Valle, S., Barros, N., Ramirez, I. & Wanless, R. M., 2016, In: Ostrich - Journal of African Ornithology. 87, 3, p. 209-215
  Research output: Contribution to journal › Article › peer-review

2015

• Published
  Marsden, S. J., Loqueh, E., Takuo, J. M., Hart, J. A., Abani, R., Ahon, D. B., Annorbah, N. N. D., Johnson, R. & Valle, S., 2015, In: Oryx. 50, 4, p. 617-625
  Research output: Contribution to journal › Article › peer-review

2014

• Published
  BirdLife International, Ndang'ang'a, P. K. (Editor), Ward-Francis, A. (Editor), Costa, L. (Editor), Valle, S. (Editor), Lima, R. (Editor), Palmeirim, J. (Editor), Tavares, J. (Editor), Buchanan, G. (Editor), Carvalho, M. (Editor), de Melo, M. (Editor) & Dallimer, M. (Editor), 2014, BirdLife International, Cambridge, UK. 26 p.
  Research output: Book/Report › Commissioned report
• Published
  Martin, R. O., Perrin, M. R., Boyes, R. S., Abebe, Y. D., Annorbah, N. D., Asamoah, A., Bizimana, D., Bobo, K. S., Bunbury, N., Brouwer, J., Diop, M. S., Ewnetu, M., Fotso, R. C., Garteh, J., Hall, P., Holbech, L. H., Madindou, I. R., Maisels, F., Mokoko, J., Mulwa, R., Reuleaux, A., Symes, C., Tamungang, S., Taylor, S., Valle, S., Waltert, M. & Wondafrash, M., 2014, In: Ostrich: Journal of African Ornithology. 85, 3, p. 205-233
  Research output: Contribution to journal › Article › peer-review
• Published
  BirdLife International, Ndang'ang'a, P. K. (Editor), de Melo, M. (Editor), Lima, R. (Editor), Costa, L. (Editor), Buchanan, G. (Editor), Dallimer, M. (Editor), Tavares, J. (Editor), Valle, S. (Editor) & Ward-Francis, A. (Editor), 2014, BirdLife International, Cambridge, UK. 14 p.
  Research output: Book/Report › Commissioned report
• Published
  Valle, S., Barros, N. & Wanless, R., 2014, BirdLife International, Cambridge, UK. 27 p.
  Research output: Book/Report › Commissioned report

2013

• Published
  Marsden, S. J., Loqueh, E., Takuo, J. M., Hart, J. A., Abani, R., Ahon, D. B., Showers, C., Annorbah, N., Johnson, R. & Valle, S., 2013, Strengthening Capacity for Monitoring and Regulation of International Trade of African Grey Parrot. CITES Secretariat (ed.). CITES Secretariat, p. 1-18
  Research output: Chapter in Book/Report/Conference proceeding › Chapter

2012

• Published
  Valle, S., Boitani, L. & Maclean, I. M. D., 2012, In: Ostrich: Journal of African Ornithology. 83, 1, p. 19-26
  Research output: Contribution to journal › Article › peer-review

2022

• Population estimates are essential for the conservation of wildlife. However, accurate estimates can be labour-intensive, particularly for small and medium-sized mammals where capture and handling of individuals is often required. Our study aimed to provide a robust and standardised method of determining red squirrel abundance using remotely activated cameras, while also quantifying how red squirrel abundance relates to key habitat characteristics. Fifty sample points were selected in four habitat categories in forests across Anglesey. We found a strong correlation (r = 0.78) between the number of red squirrels live-trapped over ten-days with the number of camera images recorded during a five-day period. Red squirrel abundance was negatively related to stand canopy openness, while the presence of Scots pine and increased tree species diversity were positively related to squirrel abundance. Our results demonstrate that remotely activated cameras can provide a suitable tool for surveying red squirrel abundance and guiding habitat management.

  19 Dec 2022

  Activity: Oral presentation (Speaker)

• 2022

  Activity: Membership of network (Member)

2019

• 21 Mar 2019 – 22 Mar 2019

  Activity: Consultancy (Consultant)

2018

• 26 Jul 2018

  Activity: Invited talk (Speaker)

• 26 Apr 2018

  Activity: Participation in Academic workshop, seminar, course (Speaker)

• 21 Mar 2018 – 23 Mar 2018

  Activity: Participation in Academic workshop, seminar, course (Speaker)