Who gains from saving nature
Ledger 1 : 33 — For each dollar financing nature-based solutions in 2023, about $33 financed activities harmful to nature. (UNEP)
Cases / Introduced and invasive species · Sweden · 2006

Signal crayfish carried crayfish plague in Sweden, a 2006 study reports

Short record: the main facts, with sources. A full case file has not been prepared.

Nature's voice · report
No measurement of the harm done to me here is on record.
Did nature suffer? Not measured.
Not on record
  • The record does not name which of my species, waters, soils or forests were harmed.
What the record lacks: 3 none on record · 1 not measured See the gaps

A 2006 article in the journal KMAE reported that signal crayfish in Sweden carried crayfish plague. The sources reviewed do not describe the spread of the disease or its effect on native crayfish.

What?
A 2006 KMAE article reported that signal crayfish in Sweden carried crayfish plague. KMAE (journal)
Where?
Sweden KMAE (journal)
When?
Article published in 2006; no other dates are given in the sources reviewed. KMAE (journal)
Who?
Gained
None on record
Lost
None on record
Harmed
None on record
Why?
Not stated in the sources reviewed.
How?
Signal crayfish carried crayfish plague, according to the article. KMAE (journal)
5 of 6 questions answered from the record · open: who

What happened

The record, in order.

A 2006 article in the journal KMAE reported that signal crayfish in Sweden carried crayfish plague.

The sources reviewed give no further detail on the Swedish case, its dates or its spread.

    In court and with insurers

    Every proceeding and every insurer decision on record.

    Lawsuits and rulings

    No court case on record. No court has ruled on this case.

    Insurers

    No insurer decision on record.

    What we don't know

    Undisclosed, unproven, untried: recorded as data.

    Nature

    • Not measured Harm to nature: The record holds no measurement of harm to nature.

    Record

    • None on record The sources reviewed do not give the date of introduction or the origin of the plague.
    • None on record The sources reviewed do not name the native crayfish affected or the scale of losses.
    • None on record Only one linked source was reviewed for this case.

    Did the harm stop?

    Not stated in the sources reviewed.

    Who paid?

    Not stated in the sources reviewed.

    Sources

    Voices on record: — Company or project— Government and regulators— Courts— Press and investigations— Communities and civil society✓ Researchers

    Researchers

    Similar cases
    Introduced and invasive species · Australia · 1935–1936
    Cane toad introduction (Australia)
    Same type: Introduced and invasive speciesHarm to nature not measured
    Introduced and invasive species · Tanker / shipping · Fishing ban · Turkey · 1869–2025
    Lessepsian invasions: pufferfish in Turkey and bounty payments
    Same type: Introduced and invasive speciesHarm to nature not measured
    Introduced and invasive species · United States · 1933–1970
    US paid farmers to plant kudzu against erosion; later declared it a weed
    Same type: Introduced and invasive speciesHarm to nature not measured
    Introduced and invasive species · India · 2026
    Madras High Court orders Prosopis uprooted in Tamil Nadu
    Same type: Introduced and invasive speciesHarm to nature not measured
    Introduced and invasive species · Monaco · 2006
    Invasive seaweed escaped from Monaco museum aquarium and reached Turkey in 2006
    Same type: Introduced and invasive speciesHarm to nature not measured
    Introduced and invasive species · Australia · 1925
    Cactoblastis moth, released against prickly pear in Australia, later reached Florida
    Same type: Introduced and invasive speciesHarm to nature not measured