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Dr Sian Griffiths
Cadeirydd, Grŵp Amgylchiadau Esgusodol
Ysgol y Biowyddorau
- Siarad Cymraeg
Trosolwyg
Cadeirydd, Grŵp Amgylchiadau Esgusodol Israddedig
Rwy'n croesawu ymholiadau gan fyfyrwyr neu staff am Amgylchiadau Esgusodol neu Darfu ar Astudiaethau. Rwy'n darparu arweiniad ar y cymorth sydd ar gael pan fydd anawsterau'n codi, ac i esbonio'r goblygiadau ar gyfer astudiaethau academaidd. Mae manylion llawn polisïau'r Brifysgol ar gael yma: EC ac IoS.
Trosolwg ymchwil
Mae fy ymchwil yn canolbwyntio ar y themâu canlynol mewn ecoleg dyfrol, sy'n cysylltu ymchwil sylfaenol â phroblemau ymarferol a wynebir gan fiolegwyr a rheolwyr cadwraeth. Mae'r gwaith yn defnyddio amrywiaeth o offer ymddygiadol ac ecolegol ac yn ymchwilio i'r rhyngweithio rhwng ymddygiad unigol a phrosesau poblogaeth sy'n hanfodol ar gyfer deall a gwarchod bioamrywiaeth naturiol.
- Ecoleg ymddygiadol ac esblygiad addysg pysgod
- Canlyniadau newid hinsawdd i ymddygiad pysgod ac ecoleg afonydd
- Ansawdd yr ecosystem a dosbarthiad pysgod mewn afonydd
Mae pob thema yn cael ei ehangu o dan 'Ymchwil' uchod ac amlygir gwaith cydweithredol gydag amrywiol asiantaethau.
Cyhoeddiad
2021
- Muhawenimana, V. et al. 2021. Temperature surpasses the effects of velocity and turbulence on swimming performance of two invasive non-native fish species. Royal Society Open Science 8(2), article number: 201516. (10.1098/rsos.201516)
2020
- Thomas, J. R. et al. 2020. Crayfish plague affects juvenile survival and adult behaviour of invasive signal crayfish. Parasitology 147(6), pp. 706-714. (10.1017/S0031182020000165)
2019
- Thomas, J. R. et al. 2019. Terrestrial emigration behaviour of two invasive crayfish species. Behavioural Processes 167, article number: 103917. (10.1016/j.beproc.2019.103917)
2018
- Thomas, J. R., Fisher, J., Cable, J. and Griffiths, S. W. 2018. Terrestrial dispersal of invasive signal crayfish during vulnerable life stages. Behavioural Processes 157, pp. 204-207. (10.1016/j.beproc.2018.09.014)
- Parry, E., Gregory, S. D., Lauridsen, R. B. and Griffiths, S. 2018. The effects of flow on Atlantic salmon (Salmo salar) redd distribution in a UK chalk stream between 1980 and 2015. Ecology of Freshwater Fish 27(1), pp. 128-137. (10.1111/eff.12330)
2017
- Fernandes, W. P. A., Griffiths, S. W., Ibbotson, A. T. and Riley, W. D. 2017. Relatedness and body size influence territorial behaviour in Salmo salar juveniles in the wild. Fisheries Management and Ecology 24(4), pp. 347-351. (10.1111/fme.12234)
2016
- Thomas, J. R., James, J., Newman, R. C., Riley, W. D., Griffiths, S. W. and Cable, J. 2016. The impact of streetlights on an aquatic invasive species: artificial light at night alters signal crayfish behaviour. Applied Animal Behaviour Science 176, pp. 143-149. (10.1016/j.applanim.2015.11.020)
- Thomas, S. M., Griffiths, S. W. and Ormerod, S. J. 2016. Beyond cool: adapting upland streams for climate change using riparian woodlands. Global Change Biology 22(1), pp. 310-324. (10.1111/gcb.13103)
2015
- Fernandes, W. P. A., Ibbotson, A. T., Griffiths, S. W., Maxwell, D. L., Davison, P. I. and Riley, W. D. 2015. Does relatedness influence migratory timing and behaviour in Atlantic salmon smolts?. Animal Behaviour 106, pp. 191-199. (10.1016/j.anbehav.2015.06.006)
- Newman, R. C., Ellis, T., Davison, P. I., Ives, M. J., Thomas, R. J., Griffiths, S. W. and Riley, W. D. 2015. Using novel methodologies to examine the impact of artificial light at night on the cortisol stress response in dispersing Atlantic salmon (Salmo salarL.) fry. Conservation Physiology 3(1), article number: cov051. (10.1093/conphys/cov051)
- Thomas, S. M., Griffiths, S. W. and Ormerod, S. J. 2015. Adapting streams for climate change using riparian broadleaf trees and its consequences for stream salmonids. Freshwater Biology 60(1), pp. 64-77. (10.1111/fwb.12467)
- Fernandes, W. P. A., Griffiths, S., Ibbotson, A., Bruford, M. W. and Riley, W. D. 2015. The role of density and relatedness in wild juvenile Atlantic salmon growth. Journal of Zoology 295(1), pp. 56-64. (10.1111/jzo.12188)
2014
- Griffiths, S. W., Opwood, J. E., Ojanguren, A. F., Armstrong, J. D. and Magurran, A. E. 2014. Sexual segregation in monomorphic minnows. Animal Behaviour 88, pp. 7-12. (10.1016/j.anbehav.2013.11.014)
2012
- Burnard, D. et al. 2012. Chemically-mediated sexual display postures in pre-ovulatory female topmouth gudgeon, Pseudorasbora parva. Behaviour 149(9), pp. 1003-1018. (10.1163/1568539X-00003024)
2010
- Orpwood, J. E., Armstrong, J. D. and Griffiths, S. W. 2010. Interactions between riparian shading and food supply: a seasonal comparison of effects on time budgets, space use and growth in Atlantic salmon Salmo salar. Journal of Fish Biology 77(8), pp. 1835-1849. (10.1111/j.1095-8649.2010.02760.x)
- Milinski, M., Griffiths, S. W., Reusch, T. B. J. and Boehm, T. 2010. Costly major histocompatibility complex signals produced only by reproductively active males, but not females, must be validated by a 'maleness signal' in three-spind sticklebacks. Proceedings of the Royal Society B-Biological Sciences 277(1680), pp. 391-398. (10.1098/rspb.2009.1501)
- Williams, K. L., Griffiths, S. W., McKelvey, S. and Armstrong, J. D. 2010. Deposition of Atlantic salmon Salmo salar carcasses in a Scottish upland catchment. Journal of Fish Biology 77(4), pp. 927-934. (10.1111/j.1095-8649.2010.02725.x)
- Andreou, D., Hussey, M., Griffiths, S. W. and Gozlan, R. E. 2010. Influence of host reproductive state on Sphaerothecum destruens prevalence and infection level. Parasitology 138(1), pp. 26-34. (10.1017/S0031182010000983)
2009
- Williams, K. L., Griffiths, S. W., Nislow, K. H., McKelvey, S. and Armstrong, J. D. 2009. Response of juvenile Atlantic salmon, Salmo salar, to the introduction of salmon carcasses in upland streams. Fisheries Management and Ecology 16(4), pp. 290-297. (10.1111/j.1365-2400.2009.00673.x)
2008
- Orpwood, J. E., Magurran, A. E., Armstrong, J. D. and Griffiths, S. W. 2008. Minnows and the selfish herd: effects of predation risk on shoaling behaviour are dependent on habitat complexity. Animal Behaviour 76(1), pp. 143-152. (10.1016/j.anbehav.2008.01.016)
- Burnard, D., Gozlan, R. E. and Griffiths, S. W. 2008. The role of pheromones in freshwater fishes. Journal of Fish Biology 73(1), pp. 1-16. (10.1111/j.1095-8649.2008.01872.x)
- Stradmeyer, L., Hojesjo, J., Griffiths, S. W., Gilvear, D. J. and Armstrong, J. D. 2008. Competition between brown trout and Atlantic salmon parr over pool refuges during rapid dewatering. Journal of Fish Biology 72(4), pp. 848-860. (10.1111/j.1095-8649.2007.01767.x)
2007
- Griffiths, S. W., Ojanguren, A. F., Orpwood, J. E., Magurran, A. E. and Armstrong, J. D. 2007. Familiarity-biased patterns of association shift with time among European minnows. Journal of Fish Biology 71(6), pp. 1602-1612. (10.1111/j.1095-8649.2007.01626.x)
- Jager, I. et al. 2007. Individual MHC class I and MHC class IIB diversities are associated with male and female reproductive traits in the three-spined stickleback. Journal of Evolutionary Biology 20(5), pp. 2005-2015. (10.1111/j.1420-9101.2007.01366.x)
2006
- Orpwood, J. E., Griffiths, S. W. and Armstrong, J. D. 2006. Effects of food availability on temporal activity patterns and growth of Atlantic salmon. Journal of Animal Ecology 75(3), pp. 677. (10.1111/j.1365-2656.2006.01088.x)
2005
- Hojesjo, J., Armstrong, J. D. and Griffiths, S. W. 2005. Sneaky feeding by salmon in sympatry with dominant brown trout. Animal Behaviour 69(5), pp. 1037-1041. (10.1016/j.anbehav.2004.09.007)
- Milinski, M., Griffiths, S. W., Wegner, K. M., Reusch, T. B. H., Haas-Assenbaum, A. and Boehm, T. 2005. Mate choice decisions of stickleback females predictably modified by MHC peptide ligands. Proceedings of the National Academy of Sciences of the USA, pp. 4414-4418. (10.1073/pnas.0408264102)
2004
- Griffiths, S. W., Collen, P. and Armstrong, J. D. 2004. Competition for shelter among over-wintering signal crayfish and juvenile Atlantic salmon. Journal of Fish Biology 65(2), pp. 436-447. (10.1111/j.0022-1112.2004.00460.x)
- Griffiths, S. W., Brockmark, S., Hojesjo, P. J. V. and Johnsson, J. I. 2004. Coping with divided attention: the advantage of familiarity. Proceedings of the Royal Society London, pp. 695-699. (10.1098/rspb.2003.2648)
2003
- Orpwood, J. E., Griffiths, S. W. and Armstrong, J. D. 2003. Effects of body size on sympatric shelter use in over-wintering juvenile salmonids. Journal of Fish Biology 63(Supp 1), pp. 166-173. (10.1111/j.1095-8649.2003.00206.x)
- Griffiths, S. W., Armstrong, J. D. and Metcalfe, N. B. 2003. The cost of aggregation: juvenile salmon avoid sharing winter refuges with siblings. Behavioral Ecology, pp. 602-606. (10.1093/beheco/arg050)
- Harwood, A. J., Griffiths, S. W., Metcalfe, N. B. and Armstrong, J. D. 2003. The relative influence of prior residency and dominance on the early feeding behaviour of juvenile Atlantic salmon. Animal Behaviour 65(6), pp. 1141-1149. (10.1006/anbe.2003.2125)
- Griffiths, S. W. 2003. Learned recognition of conspecifics by fishes. Fish and Fisheries 4(3), pp. 256-268. (10.1046/j.1467-2979.2003.00129.x)
- Harwood, A. J., Armstrong, J. D., Metcalfe, N. B. and Griffiths, S. W. 2003. Does dominance status correlate with growth in wild stream-dwelling Atlantic salmon (Salmo salar)?. Behavioral Ecology 14(6), pp. 902-908. (10.1093/beheco/arg080)
2002
- Harwood, A. J., Metcalfe, N. B., Griffiths, S. W. and Armstrong, J. D. 2002. Intra- and inter-specific competition for winter concealment habitat in juvenile salmonids. Canadian Journal of Fisheries and Aquatic Sciences 59(9), pp. 1515-1523. (10.1139/f02-119)
- Harwood, A. J., Armstrong, J. D., Griffiths, S. W. and Metcalfe, N. B. 2002. Sympatric association influences within-species dominance relations among juvenile Atlantic salmon and brown trout. Animal Behaviour 64(1), pp. 85-95. (10.1006/anbe.2002.3039)
- Griffiths, S. W. and Armstrong, J. D. 2002. Kin-biased territory overlap and food sharing among Atlantic salmon juveniles. Journal of Animal Ecology, pp. 480-486. (10.1046/j.1365-2656.2002.00614.x)
- Griffiths, S. W. and Armstrong, J. D. 2002. Rearing conditions influence refuge use among over-wintering Atlantic salmon juveniles. Journal of Fish Biology 60(2), pp. 363-369. (10.1006/jfbi.2001.1846)
2001
- Armstrong, J. D. and Griffiths, S. W. 2001. Density-dependent refuge use among over-wintering wild Atlantic salmon juveniles. Journal of Fish Biology 58(6), pp. 1524-1530. (10.1006/jfbi.2001.1554)
- Harwood, A. J., Metcalfe, N. B., Armstrong, J. D. and Griffiths, S. W. 2001. Spatial and temporal effects of interspecific competition between Atlantic salmon (Salmo salar) and brown trout (Salmo trutta) in winter. Canadian Journal of Fisheries and Aquatic Sciences 58(6), pp. 1133-1140. (10.1139/cjfas-58-6-1133)
Erthyglau
- Muhawenimana, V. et al. 2021. Temperature surpasses the effects of velocity and turbulence on swimming performance of two invasive non-native fish species. Royal Society Open Science 8(2), article number: 201516. (10.1098/rsos.201516)
- Thomas, J. R. et al. 2020. Crayfish plague affects juvenile survival and adult behaviour of invasive signal crayfish. Parasitology 147(6), pp. 706-714. (10.1017/S0031182020000165)
- Thomas, J. R. et al. 2019. Terrestrial emigration behaviour of two invasive crayfish species. Behavioural Processes 167, article number: 103917. (10.1016/j.beproc.2019.103917)
- Thomas, J. R., Fisher, J., Cable, J. and Griffiths, S. W. 2018. Terrestrial dispersal of invasive signal crayfish during vulnerable life stages. Behavioural Processes 157, pp. 204-207. (10.1016/j.beproc.2018.09.014)
- Parry, E., Gregory, S. D., Lauridsen, R. B. and Griffiths, S. 2018. The effects of flow on Atlantic salmon (Salmo salar) redd distribution in a UK chalk stream between 1980 and 2015. Ecology of Freshwater Fish 27(1), pp. 128-137. (10.1111/eff.12330)
- Fernandes, W. P. A., Griffiths, S. W., Ibbotson, A. T. and Riley, W. D. 2017. Relatedness and body size influence territorial behaviour in Salmo salar juveniles in the wild. Fisheries Management and Ecology 24(4), pp. 347-351. (10.1111/fme.12234)
- Thomas, J. R., James, J., Newman, R. C., Riley, W. D., Griffiths, S. W. and Cable, J. 2016. The impact of streetlights on an aquatic invasive species: artificial light at night alters signal crayfish behaviour. Applied Animal Behaviour Science 176, pp. 143-149. (10.1016/j.applanim.2015.11.020)
- Thomas, S. M., Griffiths, S. W. and Ormerod, S. J. 2016. Beyond cool: adapting upland streams for climate change using riparian woodlands. Global Change Biology 22(1), pp. 310-324. (10.1111/gcb.13103)
- Fernandes, W. P. A., Ibbotson, A. T., Griffiths, S. W., Maxwell, D. L., Davison, P. I. and Riley, W. D. 2015. Does relatedness influence migratory timing and behaviour in Atlantic salmon smolts?. Animal Behaviour 106, pp. 191-199. (10.1016/j.anbehav.2015.06.006)
- Newman, R. C., Ellis, T., Davison, P. I., Ives, M. J., Thomas, R. J., Griffiths, S. W. and Riley, W. D. 2015. Using novel methodologies to examine the impact of artificial light at night on the cortisol stress response in dispersing Atlantic salmon (Salmo salarL.) fry. Conservation Physiology 3(1), article number: cov051. (10.1093/conphys/cov051)
- Thomas, S. M., Griffiths, S. W. and Ormerod, S. J. 2015. Adapting streams for climate change using riparian broadleaf trees and its consequences for stream salmonids. Freshwater Biology 60(1), pp. 64-77. (10.1111/fwb.12467)
- Fernandes, W. P. A., Griffiths, S., Ibbotson, A., Bruford, M. W. and Riley, W. D. 2015. The role of density and relatedness in wild juvenile Atlantic salmon growth. Journal of Zoology 295(1), pp. 56-64. (10.1111/jzo.12188)
- Griffiths, S. W., Opwood, J. E., Ojanguren, A. F., Armstrong, J. D. and Magurran, A. E. 2014. Sexual segregation in monomorphic minnows. Animal Behaviour 88, pp. 7-12. (10.1016/j.anbehav.2013.11.014)
- Burnard, D. et al. 2012. Chemically-mediated sexual display postures in pre-ovulatory female topmouth gudgeon, Pseudorasbora parva. Behaviour 149(9), pp. 1003-1018. (10.1163/1568539X-00003024)
- Orpwood, J. E., Armstrong, J. D. and Griffiths, S. W. 2010. Interactions between riparian shading and food supply: a seasonal comparison of effects on time budgets, space use and growth in Atlantic salmon Salmo salar. Journal of Fish Biology 77(8), pp. 1835-1849. (10.1111/j.1095-8649.2010.02760.x)
- Milinski, M., Griffiths, S. W., Reusch, T. B. J. and Boehm, T. 2010. Costly major histocompatibility complex signals produced only by reproductively active males, but not females, must be validated by a 'maleness signal' in three-spind sticklebacks. Proceedings of the Royal Society B-Biological Sciences 277(1680), pp. 391-398. (10.1098/rspb.2009.1501)
- Williams, K. L., Griffiths, S. W., McKelvey, S. and Armstrong, J. D. 2010. Deposition of Atlantic salmon Salmo salar carcasses in a Scottish upland catchment. Journal of Fish Biology 77(4), pp. 927-934. (10.1111/j.1095-8649.2010.02725.x)
- Andreou, D., Hussey, M., Griffiths, S. W. and Gozlan, R. E. 2010. Influence of host reproductive state on Sphaerothecum destruens prevalence and infection level. Parasitology 138(1), pp. 26-34. (10.1017/S0031182010000983)
- Williams, K. L., Griffiths, S. W., Nislow, K. H., McKelvey, S. and Armstrong, J. D. 2009. Response of juvenile Atlantic salmon, Salmo salar, to the introduction of salmon carcasses in upland streams. Fisheries Management and Ecology 16(4), pp. 290-297. (10.1111/j.1365-2400.2009.00673.x)
- Orpwood, J. E., Magurran, A. E., Armstrong, J. D. and Griffiths, S. W. 2008. Minnows and the selfish herd: effects of predation risk on shoaling behaviour are dependent on habitat complexity. Animal Behaviour 76(1), pp. 143-152. (10.1016/j.anbehav.2008.01.016)
- Burnard, D., Gozlan, R. E. and Griffiths, S. W. 2008. The role of pheromones in freshwater fishes. Journal of Fish Biology 73(1), pp. 1-16. (10.1111/j.1095-8649.2008.01872.x)
- Stradmeyer, L., Hojesjo, J., Griffiths, S. W., Gilvear, D. J. and Armstrong, J. D. 2008. Competition between brown trout and Atlantic salmon parr over pool refuges during rapid dewatering. Journal of Fish Biology 72(4), pp. 848-860. (10.1111/j.1095-8649.2007.01767.x)
- Griffiths, S. W., Ojanguren, A. F., Orpwood, J. E., Magurran, A. E. and Armstrong, J. D. 2007. Familiarity-biased patterns of association shift with time among European minnows. Journal of Fish Biology 71(6), pp. 1602-1612. (10.1111/j.1095-8649.2007.01626.x)
- Jager, I. et al. 2007. Individual MHC class I and MHC class IIB diversities are associated with male and female reproductive traits in the three-spined stickleback. Journal of Evolutionary Biology 20(5), pp. 2005-2015. (10.1111/j.1420-9101.2007.01366.x)
- Orpwood, J. E., Griffiths, S. W. and Armstrong, J. D. 2006. Effects of food availability on temporal activity patterns and growth of Atlantic salmon. Journal of Animal Ecology 75(3), pp. 677. (10.1111/j.1365-2656.2006.01088.x)
- Hojesjo, J., Armstrong, J. D. and Griffiths, S. W. 2005. Sneaky feeding by salmon in sympatry with dominant brown trout. Animal Behaviour 69(5), pp. 1037-1041. (10.1016/j.anbehav.2004.09.007)
- Milinski, M., Griffiths, S. W., Wegner, K. M., Reusch, T. B. H., Haas-Assenbaum, A. and Boehm, T. 2005. Mate choice decisions of stickleback females predictably modified by MHC peptide ligands. Proceedings of the National Academy of Sciences of the USA, pp. 4414-4418. (10.1073/pnas.0408264102)
- Griffiths, S. W., Collen, P. and Armstrong, J. D. 2004. Competition for shelter among over-wintering signal crayfish and juvenile Atlantic salmon. Journal of Fish Biology 65(2), pp. 436-447. (10.1111/j.0022-1112.2004.00460.x)
- Griffiths, S. W., Brockmark, S., Hojesjo, P. J. V. and Johnsson, J. I. 2004. Coping with divided attention: the advantage of familiarity. Proceedings of the Royal Society London, pp. 695-699. (10.1098/rspb.2003.2648)
- Orpwood, J. E., Griffiths, S. W. and Armstrong, J. D. 2003. Effects of body size on sympatric shelter use in over-wintering juvenile salmonids. Journal of Fish Biology 63(Supp 1), pp. 166-173. (10.1111/j.1095-8649.2003.00206.x)
- Griffiths, S. W., Armstrong, J. D. and Metcalfe, N. B. 2003. The cost of aggregation: juvenile salmon avoid sharing winter refuges with siblings. Behavioral Ecology, pp. 602-606. (10.1093/beheco/arg050)
- Harwood, A. J., Griffiths, S. W., Metcalfe, N. B. and Armstrong, J. D. 2003. The relative influence of prior residency and dominance on the early feeding behaviour of juvenile Atlantic salmon. Animal Behaviour 65(6), pp. 1141-1149. (10.1006/anbe.2003.2125)
- Griffiths, S. W. 2003. Learned recognition of conspecifics by fishes. Fish and Fisheries 4(3), pp. 256-268. (10.1046/j.1467-2979.2003.00129.x)
- Harwood, A. J., Armstrong, J. D., Metcalfe, N. B. and Griffiths, S. W. 2003. Does dominance status correlate with growth in wild stream-dwelling Atlantic salmon (Salmo salar)?. Behavioral Ecology 14(6), pp. 902-908. (10.1093/beheco/arg080)
- Harwood, A. J., Metcalfe, N. B., Griffiths, S. W. and Armstrong, J. D. 2002. Intra- and inter-specific competition for winter concealment habitat in juvenile salmonids. Canadian Journal of Fisheries and Aquatic Sciences 59(9), pp. 1515-1523. (10.1139/f02-119)
- Harwood, A. J., Armstrong, J. D., Griffiths, S. W. and Metcalfe, N. B. 2002. Sympatric association influences within-species dominance relations among juvenile Atlantic salmon and brown trout. Animal Behaviour 64(1), pp. 85-95. (10.1006/anbe.2002.3039)
- Griffiths, S. W. and Armstrong, J. D. 2002. Kin-biased territory overlap and food sharing among Atlantic salmon juveniles. Journal of Animal Ecology, pp. 480-486. (10.1046/j.1365-2656.2002.00614.x)
- Griffiths, S. W. and Armstrong, J. D. 2002. Rearing conditions influence refuge use among over-wintering Atlantic salmon juveniles. Journal of Fish Biology 60(2), pp. 363-369. (10.1006/jfbi.2001.1846)
- Armstrong, J. D. and Griffiths, S. W. 2001. Density-dependent refuge use among over-wintering wild Atlantic salmon juveniles. Journal of Fish Biology 58(6), pp. 1524-1530. (10.1006/jfbi.2001.1554)
- Harwood, A. J., Metcalfe, N. B., Armstrong, J. D. and Griffiths, S. W. 2001. Spatial and temporal effects of interspecific competition between Atlantic salmon (Salmo salar) and brown trout (Salmo trutta) in winter. Canadian Journal of Fisheries and Aquatic Sciences 58(6), pp. 1133-1140. (10.1139/cjfas-58-6-1133)
Ymchwil
Ecoleg ymddygiadol ac esblygiad addysg pysgod
Mae'r thema ymchwil hon yn mynd i'r afael â chwestiwn allweddol mewn ymddygiad anifeiliaid ac esblygiad bywyd cymdeithasol: sut mae anifeiliaid yn penderfynu pa grŵp i ymuno ag ef. Felly, mae'n cysylltu paramedrau ymddygiadol pwysig ag ecoleg a chadwraeth pysgod gwyllt. Mae gwaith ar y cyd â'r Athro A. Magurran (Prifysgol St Andrews) a Dr John Armstrong (Marine Scotland Science, Freshwater Laboratory, Pitlochry),
Canlyniadau newid hinsawdd i ecoleg salmonid
Mae newid yn yr hinsawdd yn cael effeithiau mawr ar batrymau dosbarthu a chyfansoddiad cymunedol organeddau afonydd ac rydym yn profi sut mae gwella cynefinoedd yn afonydd S. Cymru, er enghraifft, cynnal ac adfer coed llydanddail yn y parth torlannol, yn cynyddu gwytnwch eogiaid yr Iwerydd i newid yn yr hinsawdd. Mae'r gwaith hwn yn gydweithrediad sydd â chysylltiad cryf â diddordebau ymchwil yr Athro Steve Ormerod, aelod arall o'r OnE (Is-adran Ymchwil Organebau a'r Amgylchedd) a Dr. Isabelle Durance (Sefydliad Ymchwil Mannau Cynaliadwy), yn ogystal â chydweithwyr allanol (Cyfoeth Naturiol Cymru, Ymddiriedolaeth Afonydd De Ddwyrain Cymru a'r Game and Wildlife Conservation Trust).
Mae gwaith arall yn y DU yn mabwysiadu dull ymddygiadol, gan archwilio cyllidebau amser eogiaid yr Iwerydd, defnyddio gofod (gan gynnwys ymddygiad cysgodol) a thwf, yn y gwyllt ac mewn nentydd dan do ac artiffisial, i ymchwilio i effeithiau lliniaru cysgodi afonol ar ecoleg eogiaid. Mae ymddygiad cysgodol pysgod yn ddiddordeb parhaus. Mae llawer o bysgod, gan gynnwys eog yr Iwerydd, yn nosol ar dymheredd oer (yn cysgodi mewn cynefinoedd rhyngsefydlog yn ystod golau dydd ac yn dod i'r amlwg i chwilota yn y nos). Mae ffactorau sy'n dylanwadu ar gysgodi, gan gynnwys tymheredd y dŵr, amodau golau (e.e. goleuadau stryd artiffisial) a chystadleuaeth o rywogaethau ymledol yn cael effeithiau pwysig a ragwelir ar oroesi trwy fwyta bwyd, twf ac osgoi ysglyfaethwyr. Mae ymchwil ar effaith goleuadau stryd artiffisial ar ecoleg dyfrol yn cael ei gynnal mewn cydweithrediad â Dr Bill Riley yn CEFAS (Canolfan yr Amgylchedd, Pysgodfeydd a Gwyddoniaeth Dyframaeth), Lowestoft.
Ansawdd yr ecosystem a dosbarthiad pysgod mewn afonydd
Gall y gwasanaethau a ddarperir gan nentydd ac afonydd, gan gynnwys darparu pysgod sy'n werthfawr yn economaidd ac yn ddiwylliannol, gael eu peryglu gan effeithiau newid hinsawdd yn y dyfodol ar argaeledd a thymheredd dŵr, ar y cyd â phwysau anthropogenig eraill fel tynnu dŵr. Mae gwaith a wneir fel rhan o gonsortiwm DURESS (Amrywiaeth mewn Afonydd yr Ucheldir ar gyfer Cynaliadwyedd Gwasanaeth Ecosystemau) yn profi'r rhagdybiaeth bod bioamrywiaeth yn ganolog i ddarparu gwasanaethau ecosystem afonydd yr ucheldir yn gynaliadwy o dan newid defnydd tir a hinsawdd (www.nerc-duress.org). Mae gwaith arall, mewn cydweithrediad â Dr Isabelle Durance (Sefydliad Ymchwil Dŵr) a Dr Hefin Jones (OnE), yn ymchwilio i'r mecanweithiau sy'n cynnal poblogaethau pysgod mewn cyfundrefnau llif amrywiol.
Mae noddwyr gwaith cyfredol a diweddar yn cynnwys:
- Afonydd Cymru
- Canolfan yr Amgylchedd, Pysgodfeydd a Gwyddoniaeth Dyframaethu
- Christine Baltzer Parks Sefydliad Amgylcheddol
- Coleg Cymraeg Cenedlaethol
- Ecoexplore
- Ymddiriedolaeth Cadwraeth Gêm a Bywyd Gwyllt
- Ysgoloriaethau Sgiliau Economi Gwybodaeth
- Cymrodoriaeth Unigol Marie Curie gan y Comisiwn Ewropeaidd
- Cyngor Ymchwil yr Amgylchedd Naturiol
- Cyfoeth Naturiol Cymru
- Ymddiriedolaeth Afonydd De Ddwyrain Cymru
Aelodau diweddar o'r grŵp ymchwil
Rhidian Thomas
- Goruchwylwyr: Dr Siân Griffiths a'r Athro Jo Cable
- Teitl doethuriaeth: Gwasgariad rhywogaethau dŵr croyw ymledol ym Mhrydain
- Teitl prosiect PhD: Lledaeniad rhywogaethau dŵr croyw ymledol ym Mhrydain
- Cyllid: Coleg Cymraeg Cenedlaethol
Ifan Jâms
- Goruchwylwyr: Drs Siân Griffiths, Isabelle Durance & Hefin Jones
- Teitl doethuriaeth: Effaith argaeledd dŵr lleihaol ar eog a brithyll afonydd Cymru
- Teitl prosiect PhD: Dylanwad sychder ar frithyll ac eog yn afonydd Cymru
- Cyllid: Coleg Cymraeg Cenedlaethol
Rhian Newman
- Goruchwylwyr: Dr Siân Griffiths, yr Athro Steve Ormerod, Dr Rob Thomas a Dr Bill Riley
- Teitl y prosiect: Golau nos artiffisial fel rhwystr i fudo a symud pysgod a physgodfeydd gwerth uchel
- Cyllid: KESS, Ecoexplore a CEFAS
Stephen Thomas
- Goruchwylwyr: Yr Athro Steve Ormerod & Dr Siân Griffiths
- Teitl prosiect PhD: Addasu afonydd i Newid Hinsawdd i gefnogi pysgod a physgodfeydd o werth uchel. Ariannwyd gan KESS, South East Wales Rivers Trust and Environment Agency
- Cyllid: KESS ac Ymddiriedolaeth Afonydd De Ddwyrain Cymru
Cyn-aelodau'r grŵp
Ôl-ddoethurol
Dr Tristan Guttridge
- Dynameg poblogaeth siarcod yn y Bahamas.
- Ariannwyd gan Christine Baltzer Parks Environmental Foundation
Dr Steven Kessel
- Dynameg poblogaeth y siarcod lemon yn y Bahamas (Negaprion brevirostris).
- Ariannwyd gan Christine Baltzer Parks Environmental Foundation
Dr Michele Drès
- Dadansoddiad moleciwlaidd o glystyru gofodol kin-rhagfarnllyd o eog ifanc yr Iwerydd Ariannwyd gan Fenter Ymchwilydd Ifanc Caerdydd
Dr Johan Höjesjö
- Addasiadau cynefin mewn salmonidau, effeithiau cystadleuaeth ryng-benodol Ariennir gan Gymrodoriaeth Unigol Marie Curie
Dr Alfredo Ojanguren
- Canlyniadau ymddygiadol ac ecolegol penderfyniadau eryr mewn pysgod Wedi'i ariannu gan yr NERC (Cyngor Ymchwil yr Amgylchedd Naturiol)
Dr James Orpwood
- Canlyniadau ymddygiadol ac ecolegol penderfyniadau eryr mewn pysgod Wedi'i ariannu gan yr NERC (Cyngor Ymchwil yr Amgylchedd Naturiol)
Myfyrwyr ôl-raddedig
Dr Bart Adriaenssens
- Ymdopi â sylw rhanedig: effeithiau'r amgylchedd cymdeithasol a chorfforol ar berfformiad pysgod. Mewn cydweithrediad â Phrifysgol Gothenburg, Sweden.
Dr Demetra Andreou
- Mynychder, effaith a chylch bywyd clefyd endemig sy'n dod i'r amlwg: yr asiant tebyg i Rosette. Ariannwyd gan CEH.
Dr Claire Bale
- Dylanwad episodau asid ar ecoleg ymddygiadol pysgod dŵr croyw. Ariannwyd gan y NERC
Dr Dean Burnard
- Effaith pheromones rhyw rhywogaethau pysgod estron ar ymddygiad atgenhedlu pysgod brodorol. Ariannwyd gan y NERC
Laura Evans
- Bullheads fel rhywogaethau carreg allweddol ar gyfer gwasanaethau ecosystem afon. Ariannwyd gan KESS ac Afonydd Cymru.
Dr Wendy Fernandes
- Rhyngweithio rhwng nodweddion teuluol, goroesiad yr amgylchedd a strategaethau mudo mewn eog yr Iwerydd. Ariannwyd gan Wessex Water, CEH, CEFAS
Dr Andrew Harwood
- Cystadleuaeth ymhlith eogiaid ifanc yr Iwerydd a Brithyll Brown. Ariannwyd gan yr NERC.
Cors Becky
- Effaith tymheredd ar ddefnyddio lloches mewn eog Iweryddol ifanc. Ariannwyd gan Lea
Dr James Orpwood
- Defnydd o loches ymhlith eog yr Iwerydd sy'n byw yn y nant. Ariannwyd gan Brifysgol Caerdydd
Phoebe Harris
- Effaith golau nos artiffisial ar ecoleg afonydd. Ysgoloriaeth Prifysgol Caerdydd 125.
Dr Lois Richards-Hobbs
- Cadwraeth ddeietegol mewn pysgod: ei ganlyniadau esblygiadol mewn anifeiliaid cymdeithasol ac unig. Ariannwyd gan Sefydliad Waltham
Dr Keith Williams
- Ecoleg eogiaid yr Iwerydd mewn perthynas â loch ucheldirol. Ariannwyd gan Fwrdd Pysgodfeydd Dosbarth Conon and Alness a Phrifysgol Caerdydd
Janine Burnham
- Goruchwylwyr: Drs Siân Griffiths, Isabelle Durance & Dylan Roberts
- Teitl prosiect MRes: Profi effaith adfer cynefinoedd glannau afonol wrth liniaru effeithiau newid hinsawdd ar bysgod brodorol y DU
- Cyllid: KESS ac Ymddiriedolaeth Cadwraeth Gêm a Bywyd Gwyllt
- Ymddiriedolaeth Cadwraeth Gêm a Bywyd Gwyllt
- Effeithiau ecolegol rheoli torlannol
Addysgu
Mae'r rolau'n cynnwys:
Uwch Gymrawd yr Academi Addysg Uwch
Cadeirydd, Grŵp Amgylchiadau Esgusodol Israddedig
Arweinydd y Cynllun Gradd, Gwyddorau Biolegol 2017-2023
Arweinydd Asesu ar gyfer Ecosystemau, Cynaliadwyedd a Newid Byd-eang
Arweinydd Cwrs Maes Bioleg Arfordirol, Sir Benfro
Rwyf hefyd yn cyfrannu at ystod o addysgu ar lefel meistr ac israddedig, gan gynnwys goruchwylio myfyrwyr prosiect ymchwil israddedig ac integredig blwyddyn olaf (lefelau 6 a 7), a thrwy ddarlithoedd ac ymarferion mewn Amrywiaeth ac Addasu Anifeiliaid, a'r Ymennydd ac Ymddygiad (lefel 5) yn ogystal â gweithdai mewn Meistroli Ysgrifennu Gwyddonol (lefel 4).
Ar hyn o bryd rwy'n Arholwr Allanol ar gyfer Prifysgolion Bryste a Glasgow, a chyn hynny i Brifysgol Abertawe a Choleg Imperial Llundain.
Bywgraffiad
I studied for my first degree at the University of Wales, Aberystwyth between 1990 and 1993, and for my MSc at the University of Oxford in 1994. I completed my PhD on the schooling behaviour of freshwater fish at the University of St. Andrews in 1997 where I was supervised by Professor Anne Magurran (http://www.st-andrews.ac.uk/~guppy/). During this time my field work was based in Trinidad and Tobago, and at the CEH River Laboratory, Dorset (http://www.ceh.ac.uk/sections/re/re.html ) In 1998 I began working as a NERC Research Fellow based at the University of Glasgow (http://www.gla.ac.uk/ibls/DEEB/) and the Fisheries Research Services, Freshwater Laboratory, Pitlochry (http://www.marlab.ac.uk/FRS.Web/default.aspx). I joined Cardiff University in 2000 when I was awarded an extension to my NERC fellowship and was simultaneously appointed as lecturer in animal ecology. In 2007 I was appointed Senior Lecturer.
