caa a22 4500 445894679 CHVBK 20180317145627.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s10750-010-0592-1 doi (NATIONALLICENCE)springer-10.1007/s10750-010-0592-1 Contrasting road effect signals in reproduction of long- versus short-lived amphibians [Elektronische Daten] [Nancy Karraker, James Gibbs] Despite an increasing understanding of the effects of roadways on amphibian populations, no studies have examined road effects on demographic traits other than survival. We predicted that road mortality could exert a disproportionate effect on fecundity in long-lived species due to shifts in population age structures to younger individuals of smaller size that produce commensurately smaller egg masses. To test this hypothesis, we assessed egg mass sizes of a long-lived amphibian (spotted salamander, Ambystoma maculatum) and short-lived one (wood frog, Rana sylvatica) in wetlands near and far from highways. Egg mass sizes of A. maculatum were smaller in wetlands near highways. In contrast, those of R. sylvatica were similar among wetlands regardless of the distance from highways. We conclude that paved highways with moderate traffic volume may be having important effects on populations of long-lived amphibians through mortality-mediated depression of reproduction. The Author(s), 2011 Road effect nationallicence Road mortality nationallicence Egg mass size nationallicence Ambystoma maculatum nationallicence Rana sylvatica nationallicence Reproduction nationallicence Amphibian nationallicence Karraker Nancy Department of Environmental and Forest Biology, State University of New York, College of Environmental Science and Forestry, 13210, Syracuse, NY, USA aut Gibbs James Department of Environmental and Forest Biology, State University of New York, College of Environmental Science and Forestry, 13210, Syracuse, NY, USA aut Hydrobiologia Springer Netherlands 664/1(2011-04-01), 213-218 0018-8158 664:1<213 2011 664 10750 https://doi.org/10.1007/s10750-010-0592-1 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-010-0592-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Karraker Nancy Department of Environmental and Forest Biology, State University of New York, College of Environmental Science and Forestry, 13210, Syracuse, NY, USA aut NATIONALLICENCE 700 1- Gibbs James Department of Environmental and Forest Biology, State University of New York, College of Environmental Science and Forestry, 13210, Syracuse, NY, USA aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 664/1(2011-04-01), 213-218 0018-8158 664:1<213 2011 664 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer