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UMR CNRS 5558 - LBBE "Biométrie et Biologie Évolutive" UCB Lyon 1 - Bât. Grégor Mendel 43 bd du 11 novembre 1918 69622 VILLEURBANNE cedex
- Activités de recherche/Research activities
- +Themes de recherche/Research themes -Themes de recherche/Research themes
The main research themes developed through various programs and projects are : (1) sources of variation in foraging strategies, (2) predator-prey interactions, (3) spatio-temporal heterogeneity in resources abundance and population dynamics, (4) factors affecting community abundance and structure, and (5) influence of human activities and land use on biodiversity.
+Publications -Publications
article :
Fritz H, Loreau M, Chamaillé-Jammes S, Valeix M, Clobert J (2011)
A food web perspective on large herbivore community limitation, Ecography, vol. 34(2) pp.196-202
Gayet G, Guillemain M, Mesléard F, Fritz H, Vaux V, Broyer J (2011)
Are Mute Swans Cygnus olor really limiting fishpond use by waterbirds in the Dombes Eastern France, Journal of Ornithology, vol. 152(1) pp.45-53
Green A, Georgiev BB, Brochet AL, Gauthier-Clerc M, Fritz H, Guillemain M (2011)
Determinants f the prevalence of the cloacal cestode textit Cloacotaenia megalops in teal wintering in the French Camargue, European Journal of Wildlife Research, vol. 57(2) pp.275-281
Valeix M, Fritz H, Sabatier R, Murindagomo F, Cumming D, Duncan P (2011)
Elephant-induced structural changes in the vegetation and habitat selection by large herbivores in a African savanna, Biological COnservation, vol. 144(2) pp.902-912
Brochet AL, Gauthier-Clerc M, Guillemain M, Fritz H, Waterkeyn A, Baltanas A, Green AJ (2010)
Field evidence of dispersal of branchiopods ostracods and bryozoans by teal textit(Anas crecca) in the Camargue (southern France), Hydrobiologia, vol. 637(1) pp.255-261
Brochet AL, Guillemain M, Gauthier-Clerc M, Fritz H, Green AJ (2010)
Endozoochory of Mediterranean aquatic plant seeds by teal after a period of desiccation: Determinants of seed survival and influence of retention time on germinability and viability, Aquatic Botany, vol. 93 pp.99-106
Fleurance G, Duncan P, Fritz H, Gordon IJ, Grenier-Loustalot M-F (2010)
Influence of sward structure on daily intake and foraging behaviour by horses, Animal, vol. 4(3) pp.480-485
Periquet S, Valeix M, Loveridge AJ, Madzikanda H, Macdonald DW, Fritz H (2010)
Individual vigilance of African herbivores while drinking: the role of immediate predation risk and context, Animal Behaviour, vol. 79(3) pp.665-671
Pontes LD, Agreil C, Magda D, Gleizes B, Fritz H (2010)
Feeding behaviour of sheep on shrubs in response to contrasting herbaceous cover in rangelands dominated by Cytisus scoparius L., Applied Animal Behaviour Science, vol. 124(1-2) pp.35-44
Valeix M, Loveridge AJ, Davidson Z, Madzikanda H, Fritz H, Macdonald DW (2010)
How key habitat features influence large terrestrial carnivore movements: waterholes and African lions in a semi-arid savanna of north-western Zimbabwe, Landscape Ecology, vol. 25(3) pp.337-351
Brochet AL, Guillemain M, Fritz H, Gauthier-Clerc M, Green AJ (2009)
The role of migratory ducks in the long-distance dispersal of native plants and the spread of exotic plants in Europe, Ecography, vol. 32 pp.919-928
Chamaillé-Jammes S, Fritz H, Madzikanda H (2009)
Piosphere contribution to landscape heterogeneity: a case study of remote-sensed woody cover in a high elephant density landscape, Ecography, vol. 32 pp.871-880
Chamaillé-Jammes S, Valeix M, Bourgarel M, Murindagomo F, Fritz H (2009)
Seasonal density estimates of common large herbivores in Hwange National Park Zimbabwe, African Journal of Ecology, vol. 47(4) pp.804-808
Chamaillé-Jammes S, Valeix M, Bourgarel M, Murindagomo F, Fritz H (2009)
Seasonal density estimates of common large herbivores in Hwange National Park Zimbabwe, African Journal of Ecology, vol. 47(4) pp.804-808
Desmonts D, Fritz H, Cornulier T, Maheo R (2009)
Rise in human activities on the mudflats and Brent Geese textit(Branta bernicla) wintering distribution in relation to textotZostera spp. beds: a 30-year study, Journal of Ornithology, vol. 150 pp.733-742
Durant D, Desnouhes L, Fritz H, Guillemain M, Edouard N, Vial C (2009)
Size-related consumption of Scirpus maritimus tubers by greylag geese Anser anser explained by their functional response, Behavioural Processes, vol. 80(1) pp.39-45
Durant D, Desnouhes L, Guillemain M, Fritz H, Mesléard F (2009)
How do shoot clipping and tuber harvesting combine to affect Bolboschoenus maritimus recovery capacities?, Botany-Botanique, vol. 87(9) pp.883-887
Fleurance G, Fritz H, Duncan P, Gordon J, Edouard N, Vial C (2009)
Instantaneous intake rate in horses of different body sizes: Influence of sward biomass and fibrousness, Applied Animal Behaviour Science, vol. 117 pp.84-92
Lebarbenchon C, Albespy F, Brochet AL, Grandhomme V, Renaud F, Fritz H, Green AJ, Thomas F, Van der Werf S, Aubry P, Guillemain M, Gauthier-Clerc M (2009)
Spread of Avian Influenza Viruses by Common Teal textit(Anas crecca) in Europe, PLoS ONE, vol. 4(10) pp.1-9
Loveridge AJ, Valeix M, Davidson Z, Murindagomo F, Fritz H, Macdonald DW (2009)
Changes in home range size of African lions in relation to pride size and prey biomass in a semi-arid savanna, Ecography, vol. 32(6) pp.953-962
Valeix M, Fritz H, Canevet V, Le Bel S, Madzikanda H (2009)
Do elephants prevent other African herbivores from using waterholes in the dry season?, Biodiversity and Conservation, vol. 18 pp.569-576
Valeix M, Fritz H, Loveridge AJ, Davidson Z, Hunt JE, Murindagomo F, Macdonald DW (2009)
Does the risk of encountering lions influence African herbivore behaviour at waterholes?, Behavioral Ecology and Sociobiology, vol. 63 pp.1483-1494
Valeix M, Loveridge AJ, Chamaillé-Jammes S, Davidson Z, Murindagomo F, Fritz H, Macdonald DW (2009)
Behavioral adjustments of African herbivores to predation risk by lions: Spatiotemporal variations influence habitat use, Ecology, vol. 90(1) pp.23-30
Valery L, Fritz H, Lefeuvre J-C, Simberloff D (2009)
Invasive species can also be native, Trends in Ecology and Evolution, vol. 24(11) pp.585-585
Valéry L, Fritz H, Lefeuvre J-C, Simberloff D (2009)
Ecosystem-level consequences of invasions by native species as a way to investigate relationships between evenness and ecosystem function, Biological Invasions, vol. 11(3) pp.609-617
Blanchard P, Fritz H (2008)
Seasonal variation in rumination parameters of free-ranging impalas (Aepyceros melampus), Wildlife biology, vol. 14(3) pp.372-378
Blanchard P, Sabatier R, Fritz H (2008)
Within-group spatial position and vigilance: a role also for competition? The case of impalas (Aepyceros melampus) with a controlled food supply, Behavioral ecology and sociobiology, vol. 62 pp.1863-1868
Chamaille-Jammes S, Fritz H, Valeix M, Murindagomo F, Clobert J (2008)
Resource variability aggregation and direct density dependence in an open context: the local regulation of an African elephant population, Journal of Animal Ecology, vol. 77 pp.135-144
Durant D, Tichit M, Fritz H, Kerneïs E (2008)
Field occupancy by breeding lapwings Vanellus vanellus and redshanks Tringa totanus in agricultural wet grasslands, Agriculture Ecosystems & Environment, vol. 128 pp.146-150
Durant D, Tichit M, Kerneïs E, Fritz H (2008)
Management of agricultural wet grasslands for breeding waders: integrating ecological and livestock system perspectives a review, Biodiversity and Conservation, vol. 17(9) pp.2275-2295
Le Corre M, Pellerin M, Pinaud D, Van Laere G, Fritz H, Saïd S (2008)
A multi-patch use of the habitat: testing the First-Passage Time analysis on roe deer Capreolus capreolus paths, Wildlife biology, vol. 14(3) pp.339-349
Poisbleau M, Desmonts D, Fritz H (2008)
Dominance relationships in Dark-bellied Brent Geese Branta bernicla bernicla at spring staging areas, Ardea, vol. 96 pp.135-139
Storms D, Aubry P, Hamann J-L, Saïd S, Fritz H, Saint-Andrieux C, Klein F (2008)
Seasonal variation in diet composition and similarity of sympatric red deer Cervus elaphus and roe deer Capreolus capreolus, Wildlife biology, vol. 14 pp.237-250
Valeix M, Fritz H, Chamaillé-Jammes S, Bourgarel M, Murindagomo F (2008)
Fluctuations in abundance of large herbivore populations: insights into the influence of dry season rainfall and elephant numbers from long-term data, Animal Conservation, vol. 11 pp.391-400
Valeix M, Fritz H, Matsika R, Matsvimbo F, Madzikanda H (2008)
The role of water abundance thermoregulation perceived predation risk and interference competition in water access by African herbivores, African Journal of Ecology, vol. 46 pp.402-410
Valery L, Fritz H, Lefeuvre J-C, Simberloff D (2008)
In search of a real definition of the biological invasion phenomenon itself, Biological Invasions, vol. 10(8) pp.1345-1351
Arzel C, Guillemain M, Gurd DB, EImberg J, Fritz H, Arnaud A, Pin C, Bosca F (2007)
Experimental functional response and inter-individual variation in foraging rate of teal (Anas crecca), Behavioural Processes, vol. 75 pp.66-71
Blanchard P, Fritz H (2007)
Induced or routine vigilance while foraging, Oikos, vol. 116 pp.1603-1608
Chamaillé-Jammes S, Fritz H, Holdo R (2007)
spatial relationship between elephant and sodium concentration of water disappears as density increased in Hwange National Park Zimbabwe, Journal of Tropical Ecology, vol. 23 pp.725-728
Chamaillé-Jammes S, Fritz H, Murindagomo F (2007)
Climate-driven fluctuations in surface-water availability and the buffering role of artificial pumping in an African savanna: Potential implication for herbivore dynamics, Austral Ecology, vol. 32 pp.740-748
Chamaillé-Jammes S, Fritz H, Murindagomo F (2007)
Detecting climate changes of concern in highly variable environments: Quantile regressions reveal that droughts worsen in Hwange National Park Zimbabwe, Journal of Arid Environments, vol. 71 pp.323-329
Chamaillé-Jammes S, Valeix M, Fritz H (2007)
Elephant management: why can’t we throw out the babies with the artificial bathwater?, Diversity and Distributions, vol. 13 pp.663-665
Chamaillé-Jammes S, Valeix M, Fritz H (2007)
Managing heterogeneity in elephant distribution: interactions between elephant population density and surface-water availability, Journal of Applied Ecology, vol. 44 pp.625-633
Fleurance G, Duncan P, Fritz H, Cabaret J, Cortet J, Gordon IJ (2007)
Selection of feeding sites by horses at pasture: Testing the anti-parasite theory, Applied Animal Behaviour Science, vol. 108 pp.288-301
Guillemain M, Arzel C, Legagneux P , Elmberg J, Fritz H, Lepley M, Pin C , Arnaud A , Massez G (2007)
Predation risk constrains the plasticity of foraging behaviour in teals Anas crecca: a flyway-level circumannual approach, Animal Behaviour, vol. 73 pp.845-854
Guillemain M, Arzel C, Legagneux P, Elmberg J , Fritz H , Lepley M , Pin C , Arnaud A, Massez G (2007)
Risky foraging leads to cost-free mate guarding in male teal Anas crecca, Journal of Ornithology, vol. 148 pp.251-254
Guillemain M, Fritz H, Johnson AR , Simon G (2007)
What type of lean ducks do hunters kill? Weakest local ones rather than migrants, Wildlife Biology, vol. 13 pp.102-107
Guillemain M, Lepley M, Fritz H, Hecker N (2007)
Marsh Harriers Circus aeruginosus target Teals Anas crecca at roosts according to potential availability of vulnerable prey, BIRD Study, vol. 54 pp.268-270
Guillemain M, Poisbleau M, Denonfoux L, Lepley M, Moreau C, Massez G, Leray G, Caizergues A, Arzel C, Rodrigues D, Fritz H (2007)
Multiple tests of the effect of nasal saddles on dabbling ducks: combining field and aviary approaches, Bird Study, vol. 54 pp.35-45
Poisbleau M, Dalloyau S, Fritz H, Bost C-A, Ebbinge B-S (2007)
Brent goose Branta bernicla bernicla feeding behaviour durin incubation Taïmyr Perinsula Russia, Polar Biology, vol. 30 pp.1343-1349
Valeix M, Chamaillé-Jammes S, Fritz H (2007)
Interference competition and temporal niche shifts: elephants and herbivore communities at waterholes, Oecologia, vol. 153 pp.739-748
Valeix M, Fritz H, Dubois S, Kanengoni K, Alleaume S, Saïd S (2007)
Vegetation structure and ungulate abundance over a period of increasing elephant abundance in Hwange National Park Zimbabwe, Journal of Tropical Ecology, vol. 23 pp.87-93
Blanc R, Guillemain M, Mouronval JB, Desmonts D, Fritz H (2006)
Effects of non-consumptive leisure disturbance to wildlife, Revue d`Ecologie - La terre et la vie, vol. 61(2) pp.117-133
Chamaillé-Jammes S, Fritz H, Murindagomo F (2006)
Spatial patterns of the NDVI–rainfall relationship at the seasonal and interannual time scales in an African savanna, International Journal of Remote Sensing, vol. 27 pp.5185-5200
Durant D, Fritz H (2006)
Variation of pecking rate with sward height in wild wigeon Anas penelope, Journal of Ornithology, vol. 147 pp.367-370
Durant D, Kersten M, Fritz H, Juin H, Lila M (2006)
Constraints of feeding on Salicornia ramosissima by wigeon Anas penelope : an experimental approach, Journal of Ornithology, vol. 147 pp.1-12
Gaidet-Drapier N, Fritz H, Bourgarel M, Renaud P-C, Poilecot P, Chardonnet P, Coid C, Poulet D, Bel S (2006)
Cost and Efficiency of Large Mammal Census Techniques: Comparison of Methods for a Participatory Approach in a Communal Area Zimbabwe, Biodiversity and Conservation, vol. 15 pp.735-754
Poisbleau M, Fritz H, Dano S, Lambrechts MM (2006)
Body measurements and hormonal within-pair covariation in wintering and spring staging Dark-bellied Brent Geese Branta bernicla bernicla, Ardéa, vol. 94 pp.127-131
Poisbleau M, Fritz H, Lambrechts MM, Trouve C, Ebbinge BS (2006)
Changes in body mass and hormone levels between wintering and spring staging areas in dark-bellied brent geese Branta bernicla bernicla, Journal of Avian Biology, vol. 37 pp.143-148
Poisbleau M, Fritz H, Valeix M, Perroi P-Y, Dalloyau S, Lambrechts M (2006)
Social dominance correlates and family status in wintering dark-bellied brent geese Branta bernicla bernicla, Animal Behaviour, vol. 71 pp.1351-1358
Poisbleau M, Jenouvrier S, Fritz H (2006)
Assessing the reliability of dominance scores for assigning individual ranks in a hierarchy, Animal Behaviour, vol. 72 pp.835-842
Storms D, Saïd S, Fritz H, Hamann J-L, Saint Andrieux C, Klein F (2006)
Influence of hurricane Lothar on red an roe deer winter diets in the Northern Vosges France, Forest Ecology and Management, vol. 237 pp.164-169
Agreil C, Fritz H, Meuret M (2005)
Maintenance of daily intake through bite mass diversity adjustment in sheep grazing on heterogeneous and variable vegetation, Applied Animal Behaviour Science, vol. 91 pp.35-36
Duriez O, Ferrand Y, Binet F, Corda E, Gossmann F, Fritz H (2005)
Habitat selection of the Eurasian woodcock in winter in relation to earthworms availability, Biological Conservation, vol. 122 pp.479-490
Duriez O, Fritz H, Binet F, Tremblay Y, Ferrand Y (2005)
Individual activity rates in wintering Eurasian woodcocks: starvation versus predation risk trade-off?, Animal Behaviour, vol. 69 pp.39-49
Duriez O, Fritz H, Saïd S, Ferrand Y (2005)
Wintering behaviour and spatial ecology of Eurasian Woodcock Scolopax rusticola in western France, Ibis, vol. 147 pp.519-532
Fleurance G, Duncan P, Fritz H, Cabaret J, Gordon IJ (2005)
Importance of nutritional and anti-parasite strategies in the foraging decisions of horses: an experimental test, Oikos, vol. 110 pp.602-612
Poisbleau M, Fritz H, Guillemain M, Lacroix A (2005)
Testosterone and linear social dominance status in captive male dabbling ducks in winter, Ethology, vol. 111 pp.493-509
Poisbleau M, Fritz H, Guillon N, Chastel O (2005)
Linear social dominance hierarchy and corticosterone responses in male mallards and pintails, Hormones and Behavior, vol. 47 pp.485-492
Saïd S, Pellerin M, Guillon N, Débias F, Fritz H (2005)
Assessment of forage availability in ecological studies, European Journal of Wildlife Research, vol. 51 pp.242-247
de Garine-Wichatitsky M, Fritz H, Gordon IJ, Illius AW (2004)
Bush selection along foraging pathways by sympatric impala and greater kudu, Oecologia, vol. 141 pp.66-75
Duriez O, Pastout-Lucchini L, Boos M, Chastel O, Fritz H, Ferrand Y, Clobert J (2004)
Low levels of energy expenditure in a nocturnal forest-dwelling wader the Eurasian Woodcock Scolopax rusticola, Ardéa, vol. 92 pp.31-42
Guillemain M, Fritz H, Klaassen M, Johnson AR, Hafner H (2004)
Fuelling rates of garganey (Anas querquedula) staging in the Camargue southern France during spring migration, Journal of Ornithology, vol. 145 pp.152-158
Durant D, Fritz H, Blais S, Duncan P (2003)
The functional response in three species of herbivorous Anatidae: effects of sward height body mass and bill size, Journal of Animal Ecology, vol. 72 pp.220-231
Durant D, Fritz H, Duncan P (2003)
Feeding patch selection by herbivorous Anatidae: the influence of body size and of plant quantity and quality, Journal of Avian Biology, vol. 35 pp.144-152
Fritz H, Said S, Renaud PC, Mutake S, Coid C, Monicat F (2003)
The effects of agricultural fields and human settlements on the use of rivers by wildlife in the mid-Zambezi valley Zimbabwe, Landscape Ecology, vol. 18 pp.293-302
Fritz H, Said S, Weimerskirch H (2003)
Scale-dependent hierarchical adjustments of movement patterns in a long-range foraging seabird, Proceedings of The Royal Society B-Biological Sciences, vol. 270 pp.1143-1148
Gaidet N, Fritz H, Nyahuma C (2003)
A participatory counting method to monitor populations of large mammals in non-protected areas: a case study of bicycle counts in the Zambezi Valley Zimbabwe, Biodiversity and Conservation, vol. 12 pp.1571-1585
Bourgarel M, Fritz H, Gaillard J-M, De Garine-Wichatitsky M, Maudet F (2002)
Effects of annual rainfall and habitat types on the body mass of Impala (Aepyceros melampus) in the Zambezi Valley Zimbabwe., African Journal of Ecology, vol. 40 pp.186-193
Guillemain M, Fritz H, Duncan P (2002)
Foraging strategies of granivorous dabbling ducks wintering in protected areas of the French Atlantic coast, Biodiversity and Conservation, vol. 11 pp.1721-1732
Guillemain M, Fritz H, Duncan P (2002)
The importance of protected areas as nocturnal feeding grounds for dabbling ducks wintering in western France, Biological Conservation, vol. 103 pp.183-198
Guillemain M, Martin GR, Fritz H (2002)
Feeding methods visual fields and vigilance in dabbling ducks (Anatidae), Functional Ecology, vol. 16 pp.522-529
Vourc`h G, De Garine-Wichatitsky M, Labbe A, Rosolowski D, Martin JL, Fritz H (2002)
Monoterpene effect on feeding choice by deer, Journal of Chemical Ecology, vol. 28 pp.2411-2427
Guillemain M, Fritz H, Blais S (2000)
Foraging methods can affect patch choice: an experimental study in Mallard (Anas platyrhynchos), Behavioural Processes, vol. 50 pp.123-129
Fritz H, Duncan P (1994)
On the carrying capacity for large ungulates of African savanna ecosystems, Proceedings of The Royal Society B-Biological Sciences, vol. 256 pp.77-82
inbook :
Agreil C, Meuret M, Fritz H (2006)
Adjustement of feeding choices and intake by a ruminant foraging in varied and variable environments: new insights from continous bite monitoring, , vol. pp.302-325
Fritz H, Loison A (2006)
Large Herbivores across Biomes. Large Herbivore Ecology Ecosystem Dynamics and Conservation, , vol. pp.19-49
Le Roux X , Leriche H, Abbadie L , Fritz H (2006)
Modification of the savanna functioning by herbivores, , vol. 10 pp.185-200
