| Full text | |
| Author(s): |
Iop, Samanta
[1]
;
dos Santos, Tiago Gomes
[2]
;
Cechin, Sonia Zanini
[3]
;
Velez-Martin, Eduardo
[4]
;
Pillar, Valerio D.
[4]
;
Prado, Paulo Inacio
[1]
Total Authors: 6
|
| Affiliation: | [1] Univ Sao Paulo, Dept Ecol, LAGE, BR-05508900 Sao Paulo, SP - Brazil
[2] Univ Fed Pampa, Sao Gabriel - Brazil
[3] Univ Fed Santa Maria, Dept Ecol & Evolut, Santa Maria, RS - Brazil
[4] Univ Fed Rio Grande do Sul, Dept Ecol, Porto Alegre, RS - Brazil
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | Biotropica; v. 52, n. 5 MAY 2020. |
| Web of Science Citations: | 1 |
| Abstract | |
We investigated the role of local and landscape environmental variables on anurans density classified as habitat specialists and generalists in grassland landscapes, known as South Brazilian grasslands (SBG). In this region, we surveyed 187 ponds distributed over 40 landscape sampling units. For each pond, 31 local environmental variables were measured. Each landscape sampling unit was embedded within a larger regional sampling unit with different landscape properties. For each landscape and regional sampling units, 16 landscape metrics were extracted from a land cover and use map. We recorded 35 species, eleven of which are specialists in the SBG. The specialists were affected by 11 local and 2 landscape environmental variables, while generalists were affected by 14 local and one landscape environmental variable. Thus, specialists and generalists presented different relationships with local and landscape variables, but in general local variables had a greater influence on the density of anurans than the landscape variables. However, the landscape indirectly influenced local variables because higher quality ponds were in landscapes with higher percentages of natural habitat. In conclusion, reproductive sites with higher local quality and located within landscapes with higher percentages of natural grasslands are essential to conserve anurans in this habitat. Effective conservation of such sites would benefit from further studies that assess effects of land use and biotic integrity of ponds, which can help to determine (a) the relative effects of local habitat quality of ponds and (b) the effectiveness of protecting ponds and their local surroundings for anuran conservation in SBG. in Portuguese is available with online material. (AU) | |
| FAPESP's process: | 16/16899-0 - Fragmentation of grassland areas: what is the consequence for anuran amphibian's metacommunities? |
| Grantee: | Samanta Iop |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |