1. A Meta-Analysis of Carcass Persistence Field Experiments in Conservation Biology with Guidelines for Future Trials
Barrientos R, Martins R, Ascensão F, D’Amico M,
Moreira F, Pereira HM, Borda-de-Água L

2. Linear infrastructures!
Linear infrastructures

3. Associated resources

4. Trying to cross

5. Disrupts migration
Reduces reproductive rate
Reduces natal dispersal
Reduces population survival

6. CARCASS MONITORING PROGRAMS

7. Persistence of carcasses Searcher efficiency in detecting carcasses
Two main biases:
Persistence of carcasses
Searcher efficiency in detecting carcasses

8. What is the percentage of actual mortality we detect?
IMPLICATIONS FOR
CONSERVATION

9. ~300 studies reviewed placed carcasses
112 experiments from 44 studies on PERSISTENCE RATE at 24h, totalling 6075 carcasses and 463 trials

10. 1 8 13 3 4 11 36 12 3 1 1 1 3 1 2

11. 0 studies
15 studies
27 studies
14 studies
56 studies

12. => Taxon and body mass
Persistence rate at 24h:
=> Taxon and body mass

13. Body mass

14. Persistence rate at 24h:
Species and body mass
=> Wild / Domestic

15. Wild / Domestic

16. => Fresh / Desfrosted
Persistence rate at 24h:
Species and body mass
Domestic / Wild
=> Fresh / Desfrosted

17. Fresh / Desfrosted

18. Persistence rate at 24h:
Species and body mass
Domestic / Wild
Fresh / Desfrosted
=> Season

19. Season

20. Persistence rate at 24h:
Species and body mass
Domestic / Wild
Fresh / Desfrosted
Season
=> Study aim

22. Persistence rate at 24h:
Species and body mass
Domestic / Wild
Fresh / Desfrosted
Season
Study aim
=> Habitat

24. RESULTS
PERSISTENCE RATES
>

25. RESULTS
PERSITENCE RATES +
Body size

26. RESULTS
PERSISTENCE RATES = =

27. RESULTS
PERSISTENCE RATES
>

28. RESULTS
PERSISTENCE RATES
>

29. RESULTS
>

30. EVALUATING THE IMPACT IN THE FUTURE
STUDY-SPECIFIC TRIALS ARE NEEDED!!
(HABITAT, TYPE OF INFRASTRUCTURE)
SIZE- AND SEASON-SPECIFIC SAMPLINGS
DESFROSTED or DOMESTIC CARCASSES

31. EVALUATING THE IMPACT IN THE FUTURE
DAILY SEARCHS (29% LOST IN FIRST 24H)

32. THANKS!