"Répartition des valeurs lambda au niveau des espèces, à l'échelle nationale et par système, 1970 à 2023",,,,,,,,,,,, ,,,,,,,,,,,, Année,"Indice national, lambda moyen","Indice national, écart-type","Indice national, nombre d'espèces","Indice terrestre, lambda moyen","Indice terrestre, écart-type","Indice terrestre, nombre d'espèces","Indice d'eau douce, lambda moyen","Indice d'eau douce, écart-type","Indice d'eau douce, nombre d'espèces","Indice marin, lambda moyen","Indice marin, écart-type","Indice marin, nombre d'espèces" 1970,s/o,s/o,436,s/o,s/o,264,s/o,s/o,73,s/o,s/o,100 1971,0.00334,0.05374,448,-0.00263,0.04588,267,0.00718,0.07915,74,0.01964,0.06862,108 1972,0.00177,0.05028,441,-0.00389,0.0469,268,0.00456,0.05936,73,0.01571,0.06035,101 1973,-0.00037,0.04817,464,-0.00519,0.04588,270,0.00321,0.03442,77,0.00893,0.05873,118 1974,-0.00236,0.04969,472,-0.00853,0.05179,269,0.00397,0.02968,73,0.00635,0.05342,131 1975,-0.00146,0.04682,459,-0.00555,0.04747,267,0.00479,0.02883,77,0.00229,0.05363,116 1976,-0.0021,0.0421,469,-0.00336,0.04105,265,0.00108,0.03072,78,-0.0021,0.04985,127 1977,-0.00253,0.04812,475,-0.00254,0.05173,269,-0.0017,0.03344,79,-0.00355,0.04905,128 1978,-0.00102,0.04307,471,0.00001,0.04059,263,0.00153,0.03389,77,-0.00475,0.05164,132 1979,0.00019,0.03614,479,0.00018,0.03082,266,0.00415,0.03045,78,-0.00199,0.04603,136 1980,0.00105,0.03518,501,0.00175,0.03319,281,0.00502,0.02408,83,-0.00183,0.04259,138 1981,0.0006,0.03623,503,0.00109,0.03225,281,0.00562,0.03111,84,-0.00246,0.04459,139 1982,-0.00162,0.04236,508,-0.00216,0.03887,279,0.00305,0.03312,81,-0.00307,0.05125,149 1983,-0.0016,0.04378,510,-0.00231,0.04118,279,0.00202,0.03313,82,-0.00258,0.0522,150 1984,-0.0005,0.03846,549,-0.00085,0.03324,282,0.00358,0.03219,89,-0.00191,0.04814,179 1985,-0.00012,0.03249,527,-0.00069,0.02513,283,0.00103,0.03439,86,0.00054,0.04087,159 1986,-0.00168,0.03976,539,-0.00034,0.02276,281,0.00105,0.04428,96,-0.00441,0.05523,163 1987,-0.00313,0.03922,568,-0.00061,0.02419,289,-0.00302,0.03899,92,-0.00644,0.05487,188 1988,-0.00162,0.04678,539,0.00226,0.03883,284,0.00189,0.02947,95,-0.00871,0.06158,162 1989,-0.00195,0.04505,566,0.00284,0.03554,289,0.0018,0.02755,95,-0.0103,0.06014,183 1990,-0.00168,0.04614,552,0.00138,0.03549,295,0.00429,0.05122,99,-0.00882,0.055,159 1991,-0.00338,0.04823,575,-0.00316,0.0501,297,0.00016,0.04665,95,-0.00538,0.04628,184 1992,-0.00331,0.04812,568,-0.00491,0.05144,296,0.00193,0.0383,114,-0.00367,0.0479,159 1993,0.00074,0.05596,609,-0.00437,0.03907,302,0.01286,0.07644,118,0.00104,0.06109,191 1994,0.00379,0.0625,595,-0.00364,0.04039,302,0.01769,0.10071,125,0.00583,0.0579,169 1995,0.00137,0.05714,589,-0.00203,0.04653,306,0.00981,0.08414,122,0.00081,0.0487,162 1996,0.00155,0.05481,592,0.00149,0.05061,301,0.00326,0.05062,126,0.00006,0.06473,166 1997,-0.0012,0.05292,578,-0.00032,0.044,309,-0.00534,0.07259,129,0.0002,0.04993,141 1998,-0.00474,0.06296,610,-0.00525,0.04354,306,-0.0062,0.10348,131,-0.00271,0.04947,174 1999,-0.00522,0.05176,602,-0.00827,0.04105,310,-0.00305,0.07546,147,-0.00174,0.04569,146 2000,-0.00525,0.04577,628,-0.00791,0.03982,309,-0.00441,0.05297,150,-0.00151,0.04835,169 2001,-0.00242,0.06052,615,-0.00827,0.03862,312,0.00866,0.09384,157,-0.00214,0.0523,147 2002,-0.00195,0.05838,631,-0.00558,0.03439,311,0.00683,0.08102,158,-0.00368,0.06585,164 2003,-0.00126,0.04898,672,-0.00141,0.03609,304,-0.0004,0.0434,164,-0.00184,0.069,207 2004,-0.00022,0.04408,693,0.00126,0.03422,305,-0.00372,0.03477,161,0.00018,0.06026,233 2005,0.00064,0.04625,721,0.00155,0.02865,307,-0.00399,0.04242,162,0.00279,0.06236,259 2006,-0.0005,0.04736,714,0.00004,0.03143,305,-0.00458,0.03862,168,0.00051,0.06487,253 2007,-0.00038,0.03977,740,-0.00218,0.03131,305,-0.00079,0.02924,162,0.00107,0.05376,283 2008,-0.0033,0.042,704,-0.00665,0.0293,296,-0.00439,0.0379,166,0.00011,0.05528,253 2009,-0.00455,0.0422,708,-0.00914,0.03309,297,-0.00468,0.03984,167,-0.00136,0.05391,254 2010,-0.00456,0.04251,707,-0.0093,0.03341,298,-0.00306,0.03589,162,-0.00199,0.05584,259 2011,-0.00407,0.04458,713,-0.00823,0.03265,295,-0.00066,0.03463,168,-0.00306,0.05965,256 2012,-0.00392,0.04595,701,-0.00601,0.03842,296,-0.00168,0.03442,166,-0.00431,0.0594,245 2013,-0.00114,0.04206,687,-0.00282,0.03589,294,-0.00433,0.0353,162,0.00135,0.05315,240 2014,-0.0005,0.04502,677,-0.00327,0.03514,296,-0.00373,0.03728,161,0.00425,0.05737,226 2015,0.00109,0.0436,677,-0.00161,0.0348,291,-0.00207,0.03889,158,0.00609,0.05434,234 2016,0.0011,0.04266,666,-0.00092,0.02694,291,-0.00106,0.04251,159,0.00524,0.05695,222 2017,-0.00212,0.04093,596,-0.00142,0.02626,292,-0.00467,0.04822,153,-0.00027,0.05629,153 2018,-0.00441,0.04486,594,-0.00334,0.02928,288,-0.014,0.0664,147,0.00234,0.04147,161 2019,-0.00071,0.03974,557,-0.00319,0.03691,282,-0.00092,0.04481,136,0.00434,0.04074,141 2020,0.00065,0.04642,499,-0.00191,0.03473,267,0.00067,0.06141,101,0.00524,0.04853,131 2021,0.0015,0.04782,519,0.00227,0.03407,264,-0.0029,0.03196,116,0.0047,0.07453,139 2022,0.00025,0.07931,393,0.00619,0.04908,210,-0.00603,0.03336,111,-0.00596,0.16055,73 2023,-0.00059,0.03782,308,0.00318,0.03329,196,-0.00731,0.04529,106,-0.0048,0.00488,6 ,,,,,,,,,,,, Remarque : s/o = sans objet.,,,,,,,,,,,, Source : Zoological Society of London (2026).,,,,,,,,,,,, Disponible sur le site Web des Indicateurs environnementaux (www.canada.ca/indicateurs-environnementaux).,,,,,,,,,,,,