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    Invasive Species Pressure

    Measures the impact and threat posed by non-native species introduced into ecosystems where they do not naturally occur. These invasive species can outcompete, displace, or even eradicate native species, leading to significant disruptions in ecosystem function and biodiversity. The pressure from invasive species is a global concern as it affects all types of environments—terrestrial, freshwater, and marine—and can lead to irreversible ecological changes and economic losses.

    Managing invasive species pressure involves a comprehensive strategy that includes prevention, early detection, rapid response, and control or eradication of established invasive species. Effective management requires international cooperation, stringent biosecurity measures, and public awareness campaigns to prevent introductions. Once invasive species are established, targeted removal programs, habitat restoration, and continuous monitoring are essential to mitigate their impact and restore native biodiversity.

    The higher the score, the better the country ranks for this parameter.

    The table is sorted from the highest score to the lowest:

    Rank Country Score Change
    1
    Benin    		 100 N/A
    2
    Burkina Faso    		 100 N/A
    3
    Congo    		 100 N/A
    4
    East Timor    		 100 N/A
    5
    Gabon    		 100 N/A
    6
    Guinea    		 100 N/A
    7
    Liberia    		 100 N/A
    8
    Sierra Leone    		 100 N/A
    9
    Togo    		 100 N/A
    10
    Angola    		 99 N/A
    11
    Belize    		 99 N/A
    12
    Bolivia    		 99 N/A
    13
    Brunei    		 99 N/A
    14
    Burundi    		 99 N/A
    15
    Cameroon    		 99 N/A
    16
    Chad    		 99 N/A
    17
    Djibouti    		 99 N/A
    18
    Equatorial Guinea    		 99 N/A
    19
    Eritrea    		 99 N/A
    20
    Ethiopia    		 99 N/A
    21
    Gambia    		 99 N/A
    22
    Ghana    		 99 N/A
    23
    Guinea-Bissau    		 99 N/A
    24
    Guyana    		 99 N/A
    25
    Laos    		 99 N/A
    26
    Malawi    		 99 N/A
    27
    Mali    		 99 N/A
    28
    Mauritania    		 99 N/A
    29
    Mozambique    		 99 N/A
    30
    Myanmar    		 99 N/A
    31
    Niger    		 99 N/A
    32
    Paraguay    		 99 N/A
    33
    Senegal    		 99 N/A
    34
    Suriname    		 99 N/A
    35
    Venezuela    		 99 N/A
    36
    Vietnam    		 99 N/A
    37
    Afghanistan    		 98 N/A
    38
    Armenia    		 98 N/A
    39
    Brazil    		 98 N/A
    40
    Cambodia    		 98 N/A
    41
    Central Af. Rep.    		 98 N/A
    42
    Colombia    		 98 N/A
    43
    Costa Rica    		 98 N/A
    44
    Ecuador    		 98 N/A
    45
    Guatemala    		 98 N/A
    46
    Honduras    		 98 N/A
    47
    Ivory Coast    		 98 N/A
    48
    Kiribati    		 98 N/A
    49
    Maldives    		 98 N/A
    50
    Mongolia    		 98 N/A
    51
    Montenegro    		 98 N/A
    52
    Nepal    		 98 N/A
    53
    Nicaragua    		 98 N/A
    54
    Nigeria    		 98 N/A
    55
    North Macedonia    		 98 N/A
    56
    Pakistan    		 98 N/A
    57
    Peru    		 98 N/A
    58
    Rwanda    		 98 N/A
    59
    Solomon Islands    		 98 N/A
    60
    Sudan    		 98 N/A
    61
    Tajikistan    		 98 N/A
    62
    Uganda    		 98 N/A
    63
    Bosnia and Herz.    		 97 N/A
    64
    Botswana    		 97 N/A
    65
    DR Congo    		 97 N/A
    66
    Eswatini    		 97 N/A
    67
    Jordan    		 97 N/A
    68
    Kenya    		 97 N/A
    69
    Lesotho    		 97 N/A
    70
    Malaysia    		 97 N/A
    71
    Marshall Islands    		 97 N/A
    72
    Micronesia    		 97 N/A
    73
    Namibia    		 97 N/A
    74
    Tanzania    		 97 N/A
    75
    Thailand    		 97 N/A
    76
    Zambia    		 97 N/A
    77
    El Salvador    		 96 N/A
    78
    Indonesia    		 96 N/A
    79
    Iraq    		 96 N/A
    80
    Panama    		 96 N/A
    81
    Samoa    		 96 N/A
    82
    Tonga    		 96 N/A
    83
    Turkmenistan    		 96 N/A
    84
    Uruguay    		 96 N/A
    85
    Azerbaijan    		 95 N/A
    86
    Comoros    		 95 N/A
    87
    Dominica    		 95 N/A
    88
    Moldova    		 95 N/A
    89
    South Korea    		 95 N/A
    90
    Sri Lanka    		 95 N/A
    91
    Vanuatu    		 95 N/A
    92
    Argentina    		 94 N/A
    93
    Georgia    		 94 N/A
    94
    India    		 94 N/A
    95
    Albania    		 93 N/A
    96
    Algeria    		 93 N/A
    97
    Grenada    		 93 N/A
    98
    Luxembourg    		 93 N/A
    99
    Saudi Arabia    		 93 N/A
    100
    China    		 92 N/A
    101
    Iran    		 92 N/A
    102
    Madagascar    		 92 N/A
    103
    Morocco    		 92 N/A
    104
    Saint Lucia    		 92 N/A
    105
    St. Vincent and the Grenadines    		 92 N/A
    106
    Seychelles    		 92 N/A
    107
    Bulgaria    		 91 N/A
    108
    Croatia    		 91 N/A
    109
    Egypt    		 91 N/A
    110
    Haiti     		91 N/A
    111
    Oman    		 91 N/A
    112
    Qatar    		 91 N/A
    113
    Serbia    		 91 N/A
    114
    Slovenia    		 91 N/A
    115
    Tunisia    		 91 N/A
    116
    Uzbekistan    		 91 N/A
    117
    Mexico    		 90 N/A
    118
    Antigua and Barbuda    		 89 N/A
    119
    Belarus    		 89 N/A
    120
    Cape Verde    		 89 N/A
    121
    Kazakhstan    		 89 N/A
    122
    Kyrgyztan    		 89 N/A
    123
    Trinidad and Tobago    		 89 N/A
    124
    Fiji    		 88 N/A
    125
    Lebanon    		 88 N/A
    126
    Philippines    		 88 N/A
    127
    Zimbabwe    		 88 N/A
    128
    Bahamas    		 87 N/A
    129
    Bahrain    		 87 N/A
    130
    Bhutan    		 87 N/A
    131
    Turkey    		 87 N/A
    132
    Greece    		 85 N/A
    133
    Kuwait    		 85 N/A
    134
    Dominican Republic    		 84 N/A
    135
    Malta    		 84 N/A
    136
    Singapore    		 84 N/A
    137
    Jamaica    		 83 N/A
    138
    Mauritius    		 83 N/A
    139
    Taiwan    		 83 N/A
    140
    Barbados    		 82 N/A
    141
    Russia    		 82 N/A
    142
    South Africa    		 81 N/A
    143
    Switzerland    		 81 N/A
    144
    Cuba    		 80 N/A
    145
    Hungary    		 80 N/A
    146
    Sao Tome and Principe    		 78 N/A
    147
    United Arab Emirates    		 78 N/A
    148
    Romania    		 77 N/A
    149
    Finland    		 76 N/A
    150
    Chile    		 75 N/A
    151
    Israel    		 73 N/A
    152
    Japan    		 73 N/A
    153
    Slovakia    		 73 N/A
    154 Italy 72 N/A
    155
    Ukraine    		 71 N/A
    156
    Australia    		 70 N/A
    157
    Latvia    		 70 N/A
    158
    Lithuania    		 69 N/A
    159
    Cyprus    		 67 N/A
    160
    Denmark    		 67 N/A
    161
    Estonia    		 65 N/A
    162
    France    		 58 N/A
    163
    Austria    		 56 N/A
    164
    Canada    		 55 N/A
    165
    Poland    		 55 N/A
    166
    Netherlands    		 52 N/A
    167
    Spain    		 52 N/A
    168
    Czech republic    		 51 N/A
    169
    Iceland    		 46 N/A
    170
    Sweden    		 43 N/A
    171
    Portugal    		 41 N/A
    172
    Ireland    		 40 N/A
    173
    United States    		 36 N/A
    174
    New Zealand    		 32 N/A
    175
    Belgium    		 22 N/A
    176
    Germany    		 20 N/A
    177
    Norway    		 20 N/A
    178
    United Kingdom    		 0 N/A

    Source and Calculation

    Lists of invasive species per country are sourced from the Global Alien Species First Record Database. Shapefiles of terrestrial and marine species’ extent of occurrence are sourced from the IUCN Red List, BirdLife International and the Global Assessment of Reptile Distributions Initiative, and used to create country lists of native species. The proportion of a country’s non-native species, weighted by the number of native species of the same group (e.g., mammals, birds) is then calculated. A minimum score is given to a country that has non-native species make up 25% or more of its biodiversity.

    *Different sources offer varying data, as datasets may be subject to changes due to recent updates and revisions.