H. Abdi, Partial least squares, Encyclopedia of Social Sciences Methods, 2003.
URL : https://hal.archives-ouvertes.fr/hal-01126340

R. L. Arndt, G. R. Carmichael, D. G. Streets, and N. Bhatti, Sulfur dioxide emissions and sectorial contributions to sulfur deposition in Asia, Atmospheric Environment, vol.31, issue.10, pp.1553-1572, 1997.
DOI : 10.1016/S1352-2310(96)00236-1

M. T. Barbour, The re???invention of biological assessment in the U.S., Human and Ecological Risk Assessment: An International Journal, vol.9, issue.2, pp.933-940, 1997.
DOI : 10.1111/j.1442-9993.1995.tb00531.x

M. T. Barbour, J. B. Stribling, and J. R. Karr, Multimetric approach for establishing biocriteria and measuring biological condition. Biological Assessment and Criteria: Tools for Water Resource Planning and Decision Making, pp.63-77, 1995.

B. Bengtsson and A. Bogelius, Socio-economic consequences of aquatic liming. Liming of Acidified Surface Waters. A Swedish Synthesis, pp.423-455, 1995.

P. J. Boon, The development of integrated methods for assessing river conservation value, Hydrobiologia, vol.423, pp.413-428, 2000.
DOI : 10.1007/978-94-011-4164-2_32

D. C. Bradley and S. J. Ormerod, Long-term effects of catchment liming on invertebrates in upland streams, Freshwater Biology, vol.34, issue.1, pp.161-171, 2002.
DOI : 10.1016/0269-7491(87)90079-0

S. E. Bunn and P. M. Davies, Biological processes in running waters and their implications for the assessment of ecological integrity, Hydrobiologia, vol.422, pp.61-70, 2000.
DOI : 10.1007/978-94-011-4164-2_5

S. E. Bunn, P. M. Davies, and T. D. Mosisch, Ecosystem measures of river health and their response to riparian and catchment degradation, Freshwater Biology, vol.41, issue.2, pp.333-345, 1999.
DOI : 10.1046/j.1365-2427.1999.00434.x

T. M. Burton, R. M. Stanford, and J. W. Allan, Acidification Effects on Stream Biota and Organic Matter Processing, Canadian Journal of Fisheries and Aquatic Sciences, vol.42, issue.4, pp.669-675, 1985.
DOI : 10.1139/f85-086

A. Chamier, Effect of pH on microbial degradation of leaf litter in seven streams of the English Lake District, Oecologia, vol.36, issue.4, pp.491-500, 1987.
DOI : 10.1007/BF00379287

A. Chamier and P. A. Dixon, Pectinases in Leaf Degradation by Aquatic Hyphomycetes: the Enzymes and Leaf Maceration, Microbiology, vol.128, issue.10, pp.2469-2483, 1982.
DOI : 10.1099/00221287-128-10-2469

E. Chauvet, N. Giani, and M. O. Gessner, Breakdown and Invertebrate Colonization of Leaf Litter in Two Contrasting Streams, Significance of Oligochaetes in a Large River, Canadian Journal of Fisheries and Aquatic Sciences, vol.50, issue.3, pp.488-495, 1993.
DOI : 10.1139/f93-057

E. Dambrine, B. Pollier, A. Poswa, J. Ranger, A. Probst et al., Evidence of current acidification in spruce stands in the Vosges Mountains, northeastern France, Water, Air, and Soil Pollution, vol.105, issue.1/2, pp.43-52, 1998.
DOI : 10.1023/A:1005030331423

E. Dambrine, E. Ulrich, P. Cenac, P. Durand, T. Gauquelin et al., Atmospheric deposition in France and possible relation with forest decline. Forest Decline and Atmospheric Deposition Effects in the French Mountains Functional plasticity of benthic macroinvertebrates: implication for trophic dynamics in acid streams, Canadian Journal of Fisheries and Aquatic Sciences, vol.59, pp.177-200, 1995.

O. Dangles and F. Guérold, A comparative study of beech leaf breakdown, energetic content, and associated fauna in acidic and non-acidic streams, Archiv für Hydrobiologie, vol.144, pp.25-39, 1998.

O. Dangles and F. Guérold, Influence of shredders in mediating breakdown rates of beech leaves in circumneutral and acidic forest streams, Archiv für Hydrobiologie, vol.151, pp.649-666, 2001.

O. Dangles and F. Guérold, Linking Shredders and Leaf Litter Processing: Insights from an Acidic Stream Study, International Review of Hydrobiology, vol.43, issue.4-5, pp.395-406, 2001.
DOI : 10.1002/1522-2632(200107)86:4/5<395::AID-IROH395>3.0.CO;2-1

W. Dickson and Y. W. Brodin, Strategies and methods for freshwater liming. Liming of Acidified Surface Waters. A Swedish Synthesis, pp.81-116, 1995.

C. T. Driscoll, G. B. Lawrence, A. J. Bulger, T. J. Butler, C. S. Cronan et al., Acidic Deposition in the Northeastern United States: Sources and Inputs, Ecosystem Effects, and Management Strategies, BioScience, vol.51, issue.3, pp.180-198, 2001.
DOI : 10.1641/0006-3568(2001)051[0180:ADITNU]2.0.CO;2

V. Felten and F. Guérold, Hyperventilation and loss of hemolymph Na+ and Cl- in the freshwater amphipod Gammarus fossarum exposed to acid stress: a preliminary study, Diseases of Aquatic Organisms, vol.45, pp.77-80, 2001.
DOI : 10.3354/dao045077

A. Fjellheim and G. G. Raddum, Acid precipitation: Biological monitoring of streams and lakes, Science of The Total Environment, vol.96, issue.1-2, pp.57-66, 1990.
DOI : 10.1016/0048-9697(90)90006-G

T. Fleituch, Beech Leaf Breakdown and POM Storage along an AltitudinalStream Gradient, International Review of Hydrobiology, vol.100, issue.4-5, pp.515-525, 2001.
DOI : 10.1002/1522-2632(200107)86:4/5<515::AID-IROH515>3.0.CO;2-P

M. O. Gessner and E. Chauvet, Importance of Stream Microfungi in Controlling Breakdown Rates of Leaf Litter, Ecology, vol.75, issue.6, pp.1807-1817, 1994.
DOI : 10.2307/1939639

M. O. Gessner and E. Chauvet, A CASE FOR USING LITTER BREAKDOWN TO ASSESS FUNCTIONAL STREAM INTEGRITY, Ecological Applications, vol.12, issue.2, pp.498-510, 2002.
DOI : 10.1007/BF00731036

URL : https://hal.archives-ouvertes.fr/hal-00870744

M. O. Gessner, E. Chauvet, and M. Dobson, A Perspective on Leaf Litter Breakdown in Streams, Oikos, vol.85, issue.2, pp.377-384, 1999.
DOI : 10.2307/3546505

M. O. Gessner, S. Y. Newell, R. L. Hurst, G. R. Crawford, M. J. Knudsen et al., Biomass, growth rate, and production of filamentous fungi in plant litter. Manual of Environmental Microbiology, pp.390-408, 2002.

M. O. Gessner and A. Schmitt, Use of solid-phase extraction to determine ergosterol concentrations in plant tissue colonized by fungi, Applied and Environmental Microbiology, vol.62, pp.415-419, 1996.

M. O. Gessner and J. Schwoerbel, Leaching kinetics of fresh leaf-litter with implications for the current concept of leaf-processing in streams, Archiv für Hydrobiologie, vol.115, pp.81-90, 1989.

P. Giller and B. Malmqvist, The Biology of Rivers and Streams, 1998.

M. A. Graça, The Role of Invertebrates on Leaf Litter Decomposition in Streams - a Review, International Review of Hydrobiology, vol.24, issue.211, pp.383-396, 2001.
DOI : 10.1002/1522-2632(200107)86:4/5<383::AID-IROH383>3.0.CO;2-D

G. Gran, Determination of the equivalence point in potentiometric titrations. Part II, The Analyst, vol.77, issue.920, pp.661-671, 1952.
DOI : 10.1039/an9527700661

M. B. Griffith and S. A. Perry, Colonization and processing of leaf litter by macroinvertebrate shredders in streams of contrasting pH, Freshwater Biology, vol.19, issue.1, pp.93-103, 1993.
DOI : 10.1111/j.1365-2427.1993.tb00791.x

A. P. Groom and A. G. Hildrew, Food Quality for Detritivores in Streams of Contrasting pH, The Journal of Animal Ecology, vol.58, issue.3, pp.863-881, 1989.
DOI : 10.2307/5129

F. Guérold, J. P. Boudot, D. Merlet, J. Rouillet, D. Vein et al., Evaluation de l'état d'acidification des cours d'eau du département des Vosges, Conseil Général Des Vosges, 1997.

R. J. Hall, G. E. Likens, S. B. Fiance, and G. R. Hendrey, Experimental acidification of a stream in the Hubbard brook experimental forest, Ecology, pp.61-976, 1980.

H. Hämäläinen and P. Huttunen, Inferring the minimum pH of streams from macroinvertebrates using weighted averaging regression and calibration, Freshwater Biology, vol.36, issue.3, pp.697-709, 1996.
DOI : 10.1046/j.1365-2427.1996.00109.x

J. Herrmann, E. Degerman, A. Gerhardt, C. Johansson, P. E. Lingdell et al., Acid-stress effects on stream biology, Ambio, vol.22, pp.298-307, 1993.

M. Hieber and M. O. Gessner, CONTRIBUTION OF STREAM DETRIVORES, FUNGI, AND BACTERIA TO LEAF BREAKDOWN BASED ON BIOMASS ESTIMATES, Ecology, vol.83, issue.4, pp.1026-1038, 2002.
DOI : 10.2307/1467795

D. Hooper, M. Solan, A. Symstad, S. Díaz, M. O. Gessner et al., Species diversity, functional diversity and ecosystem functioning. Biodiversity and Ecosystem Functioning: Synthesis and Perspectives, Loreau, S. Naeem & P. Inchausti), pp.195-208, 2002.

M. Jonsson and B. Malmqvist, Ecosystem process rate increases with animal species richness: evidence from leaf-eating, aquatic insects, Oikos, vol.89, issue.3, pp.519-523, 2000.
DOI : 10.1034/j.1600-0706.2000.890311.x

M. Jonsson, O. Dangles, B. Malmqvist, and F. Guérold, Simulating species loss following perturbation: assessing the effects on process rates, Proceedings of the Royal Society B: Biological Sciences, vol.269, issue.1495, pp.1047-1052, 2002.
DOI : 10.1098/rspb.2002.1979

J. R. Karr, Defining and measuring river health, Freshwater Biology, vol.41, issue.2, pp.221-234, 1999.
DOI : 10.1046/j.1365-2427.1999.00427.x

J. Lancaster, M. Real, S. Juggins, D. T. Monteith, R. J. Flower et al., Monitoring temporal changes in the biology of acid waters, Freshwater Biology, vol.36, issue.1, pp.179-201, 1996.
DOI : 10.1046/j.1365-2427.1996.00078.x

J. Larsen, H. J. Birks, G. G. Raddum, and A. Fjellheim, Quantitative relationships of invertebrates to pH in Norwegian river systems, Hydrobiologia, vol.48, issue.270, pp.57-74, 1996.
DOI : 10.1007/BF00016900

G. B. Lawrence, M. B. David, G. M. Lovett, P. S. Murdoch, D. A. Burns et al., SOIL CALCIUM STATUS AND THE RESPONSE OF STREAM CHEMISTRY TO CHANGING ACIDIC DEPOSITION RATES, Ecological Applications, vol.9, issue.3, pp.1059-1072, 1999.
DOI : 10.1139/x95-043

F. Lepori, A. Barbieri, and S. J. Ormerod, Causes of episodic acidification in Alpine streams, Freshwater Biology, vol.27, issue.1, pp.175-189, 2003.
DOI : 10.1016/0269-7491(92)90006-V

F. Lepori, A. Barbieri, and S. J. Ormerod, Effects of episodic acidification on macroinvertebrate assemblages in Swiss Alpine streams, Freshwater Biology, vol.5, issue.10, pp.1873-1885, 2003.
DOI : 10.1016/0269-7491(92)90006-V

L. Lien, G. G. Raddum, A. Fjellheim, and A. Henriksen, A critical limit for acid neutralizing capacity in Norwegian surface waters, based on new analyses of fish and invertebrate responses, Science of The Total Environment, vol.177, issue.1-3, pp.173-193, 1996.
DOI : 10.1016/0048-9697(95)04894-4

G. E. Likens, T. J. Butker, and D. C. Buso, Long-and short-term changes in sulphate deposition: effects of the 1990 Clean Air Act Amendments, Biogeochemistry, vol.52, issue.1, pp.1-11, 2001.
DOI : 10.1023/A:1026563400336

G. E. Likens, C. T. Driscoll, and D. C. Buso, Long-Term Effects of Acid Rain: Response and Recovery of a Forest Ecosystem, Science, vol.272, issue.5259, pp.244-246, 1996.
DOI : 10.1126/science.272.5259.244

M. Loreau, S. Naeem, P. Inchausti, J. Bengtsson, J. P. Grime et al., Biodiversity and Ecosystem Functioning: Current Knowledge and Future Challenges, Science, vol.294, issue.5543, pp.804-809, 2001.
DOI : 10.1126/science.1064088

L. Maltby, Detritus processing River Biota: Diversity and Dynamics, Petts & P. Calow), pp.145-167, 1996.

L. Maltby, A. B. Boxall, D. M. Forrow, P. Calow, and C. I. Betton, The effects of motorway runoff on freshwater ecosystems: 1. Field study, Environmental Toxicology and Chemistry, vol.14, issue.147, pp.1079-1092, 1995.
DOI : 10.1002/etc.5620140620

S. K. Meegan, S. A. Perry, and W. B. Perry, Detrital processing in streams exposed to acidic precipitation in the Central Appalachian Mountains, Hydrobiologia, vol.57, issue.177, pp.101-110, 1996.
DOI : 10.1007/BF00008918

G. W. Minshall, Bringing biology back into water quality assessments Freshwater Ecosystems: Revitalizing Educational Programs in Limnology, Committee on Inland Aquatic Ecosystems) Commission on Geosciences, National Research Council, pp.289-324, 1996.

P. J. Mulholland, C. T. Driscoll, J. W. Elwood, M. P. Osgood, A. V. Palumbo et al., Relationships between stream acidity and bacteria, macroinvertebrates, and fish: a comparison of north temperate and south temperate mountain streams, USA, Hydrobiologia, vol.17, issue.1, pp.7-24, 1992.
DOI : 10.1007/BF00027525

S. M. Nelson, Leaf pack breakdown and macroinvertebrate colonization: bioassessment tools for a highaltitude regulated system? Environmental Pollution, pp.321-329, 2000.

D. K. Niyogi, W. M. Lewis, and D. M. Mcknight, LITTER BREAKDOWN IN MOUNTAIN STREAMS AFFECTED BY MINE DRAINAGE: BIOTIC MEDIATION OF ABIOTIC CONTROLS, Ecological Applications, vol.11, issue.2, pp.506-516, 2001.
DOI : 10.2307/1467795

S. J. Ormerod, P. Boole, C. P. Mccahon, N. S. Weatherley, D. Pascoe et al., Short-term experimental acidification of a Welsh stream: comparing the biological effects of hydrogen ions and aluminium, Freshwater Biology, vol.13, issue.2, pp.341-356, 1987.
DOI : 10.1016/0043-1354(83)90285-3

C. Otto and B. S. Svensson, Properties of acid brown water streams in south Sweden, Archiv für Hydrobiologie, vol.99, pp.5-36, 1983.

E. Pattee, C. Bornard, and S. Mourelatos, La décomposition des feuilles mortes dans le réseau fluvial du Rhône: influence du milieu et principaux agents responsables, pp.45-74, 1986.

R. C. Petersen and K. W. Cummins, Leaf processing in a woodland stream*, Freshwater Biology, vol.14, issue.4, pp.343-368, 1974.
DOI : 10.2307/1942187

A. Probst, E. Dambrine, D. Viville, and B. Fritz, Influence of acid atmospheric inputs on surface water chemistry and mineral fluxes in a declining spruce stand within a small granitic catchment (Vosges Massif, France), Journal of Hydrology, vol.116, issue.1-4, pp.101-124, 1990.
DOI : 10.1016/0022-1694(90)90118-H

A. Probst, J. C. Massabuau, J. L. Probst, and B. Fritz, Acidification des eaux de surface sous l'influence des précipitations acides: rôle de la végétation et du substratum, conséquence pour les populations de truites, pp.405-411, 1990.

A. Probst, J. P. Party, C. Février, E. Dambrine, A. L. Thomas et al., Evidence of springwater acidification in the Vosges Mountains (N-E France): influence of bedrock buffering capacity, Water, Air, and Soil Pollution, vol.114, issue.3/4, pp.395-411, 1999.
DOI : 10.1023/A:1005156615921

A. D. Rosemond, S. R. Reice, J. W. Elwood, and P. J. Mulholland, The effects of stream acidity on benthic invertebrate communities in the south-eastern United States, Freshwater Biology, vol.153, issue.2, pp.193-209, 1992.
DOI : 10.1016/0043-1354(83)90285-3

G. P. Rutt, N. S. Weatherley, and S. J. Ormerod, Relationships between the physicochemistry and macroinvertebrates of British upland streams: the development of modelling and indicator systems for predicting fauna and detecting acidity, Freshwater Biology, vol.60, issue.3, pp.463-480, 1990.
DOI : 10.1016/0269-7491(87)90079-0

D. W. Schindler, Effects of Acid Rain on Freshwater Ecosystems, Science, vol.239, issue.4836, pp.149-157, 1988.
DOI : 10.1126/science.239.4836.149

D. W. Schindler, P. J. Curtis, B. R. Parker, and M. P. Stainton, Consequences of climate warming and lake acidification for UV-B penetration in North American boreal lakes, Nature, vol.379, issue.6567, pp.705-708, 1996.
DOI : 10.1038/379705a0

B. Statzner, B. Bis, S. Dolédec, and P. Usseglio-polatera, Perspectives for biomonitoring at large spatial scales: a unified measure for the functional composition of invertebrate communities in European running waters, Basic and Applied Ecology, vol.2, issue.1, pp.73-85, 2001.
DOI : 10.1078/1439-1791-00039

J. L. Stoddard, D. S. Jeffries, A. Lükeviler, T. A. Clair, P. J. Dillon et al., Regional trends in aquatic recovery from acidification in North America and Europe, Nature, vol.401, issue.6753, pp.575-578, 1999.
DOI : 10.1038/44114

K. Suberkropp and J. M. Klug, The maceration of deciduous leaf litter by aquatic hyphomycetes, Canadian Journal of Botany, vol.58, issue.9, pp.1025-1031, 1980.
DOI : 10.1139/b80-126

T. J. Sullivan, J. M. Eilers, B. J. Cosby, and K. B. Vache, Increasing role of nitrogen in the acidification of surface waters in the Adirondack Mountains, New York, Water, Air, & Soil Pollution, vol.71, issue.4, pp.313-336, 1997.
DOI : 10.1007/BF02406172

H. Tachet, M. Bournaud, P. Richoux, and P. Usseglio-polatera, Invertébrés d'eau douce, 2000.

J. Thioulouse, D. Chessel, S. Dolédec, and J. M. Olivier, ADE-4: a multivariate analysis and graphical display software, Statistics and Computing, vol.7, issue.1, pp.75-83, 1997.
DOI : 10.1023/A:1018513530268

URL : https://hal.archives-ouvertes.fr/hal-00434994

C. R. Townsend, A. G. Hildrew, and J. E. Francis, Community structure in some southern English streams: the influence of physicochemical factors, Freshwater Biology, vol.60, issue.6, pp.521-544, 1983.
DOI : 10.1007/BF00686983

J. B. Wallace and J. R. Webster, The Role of Macroinvertebrates in Stream Ecosystem Function, Annual Review of Entomology, vol.41, issue.1, pp.115-139, 1996.
DOI : 10.1146/annurev.en.41.010196.000555

J. B. Wallace, S. L. Eggert, J. L. Meyer, and J. R. Webster, Multiple Trophic Levels of a Forest Stream Linked to Terrestrial Litter Inputs, Science, vol.277, issue.5322, pp.102-104, 1997.
DOI : 10.1126/science.277.5322.102

J. B. Wallace, S. L. Eggert, J. L. Meyer, and J. R. Webster, EFFECTS OF RESOURCE LIMITATION ON A DETRITAL-BASED ECOSYSTEM, Ecological Monographs, vol.69, issue.4, pp.409-442, 1999.
DOI : 10.1139/f95-832

J. B. Wallace, J. W. Grubaugh, and M. R. Whiles, Biotic Indices and Stream Ecosystem Processes: Results from an Experimental Study, Ecological Applications, vol.6, issue.1, pp.140-151, 1996.
DOI : 10.2307/2269560

J. R. Webster and E. F. Benfield, Vascular Plant Breakdown in Freshwater Ecosystems, Annual Review of Ecology and Systematics, vol.17, issue.1, pp.567-594, 1986.
DOI : 10.1146/annurev.es.17.110186.003031

P. Zwick, Phylogenetic System and Zoogeography of the Plecoptera, Annual Review of Entomology, vol.45, issue.1, pp.709-746, 2000.
DOI : 10.1146/annurev.ento.45.1.709