Responses to nitrate pollution, warming and density in common frog tadpoles (Rana temporaria)
Andrés Egea-Serrano
Josh Van Buskirk
10.6084/m9.figshare.2059293.v1
https://brill.figshare.com/articles/dataset/Responses_to_nitrate_pollution_warming_and_density_in_common_frog_tadpoles_Rana_temporaria_/2059293
Amphibians face a variety of anthropogenic
environmental perturbations that could act alone or in combination to influence
population size. We investigated interactive effects of warming conditions, a
moderate pulse of nitrogen pollution, and conspecific density on larvae of the
common frog, <i>Rana temporaria.</i> The 16-day experiment had a 2 × 2 × 2 factorial design
implemented in 80-l outdoor mesocosms. High density and warm temperature both
resulted in reduced activity and visibility; tadpoles grew and developed more
quickly at low density and high temperature. The high-nitrogen treatment did
not influence behavior, growth, or development rate. We attribute this to
several realistic features of our study, including a pulsed treatment
application and natural denitrification within the mesocosms. There was only a
single interaction among the three factors: higher temperature exacerbated
density-dependence in growth rate. These results illustrate that climate
warming may benefit temperate amphibians, although the benefits may be
counteracted by enhanced larval crowding.
2015-12-30 11:39:56
density
fertilizer
natural stressors
pollution
Rana temporaria
warming
Zoology
Ecology
Environmental Science