Effects of multiple stressors on amphibian oviposition: Landscape and local determinants in central Japan

• DOI: 10.1016/j.ecolind.2021.107824
• Publication Date: 2021-05-29T00:06:46Z
• Authors: Xiaojun Zheng; Yosihiro Natuhara; Jian Li; Guanlin Li; Yizhou Du; Hui Jia; Zhicong Dai; Daolin Du; Shan Zhong; Dan Qin
• Keywords: Habitat Fragmentation; Microsite

Amphibian declines are caused by multiple stressors at the landscape and local levels, resulting in habitat loss, fragmentation, splits, degradation. However, combined effects of different scales on amphibian poorly understood. We examined breeding distribution three frog species, Rana japonica, ornativentris, Bufo japonicus formosus, along an ecological gradient from urban to mountain areas. The number egg masses data variables were collected 124 sites Toyota, Okazaki, Shitara, central Japan. best model with lowest value Akaike Information Criteria (AIC) was obtained using a 500-m-radius buffer for all species. increased forest area Yet, other differently affected species each site. egg-mass R. japonica positively residential region much vegetation & elevation difference, negatively elevation. That ornativentris influenced abandoned paddy-field, total road density. Regarding B. its area, difference. At scale, water while percentage concrete revetment has negative effects. This study not only assesses how assemblage frogs respond habitats spatial land use (urban-mountain), but also emphasizes importance strategic management actions agricultural landscapes, allowing maintenance diversity amphibians.