Conservation Evidence: Evidence Data

Collected Evidence: Collected Evidence: Use herbicides to control mid-storey or ground vegetation Three studies (including two randomized, replicated, controlled studies) in the USA found that understory removal using herbicide had no effect or some negative effects on amphibian abundance. One replicated, site comparison study in Canada found that following logging American toad abundance was similar and wood frogs lower in stands with herbicide treatment and planting compared to stands left to regenerate naturally. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F778https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F778Wed, 21 Aug 2013 15:38:27 +0100Collected Evidence: Collected Evidence: Regulate water levels Two studies (including one replicated, site comparison study) in the UK found that habitat management that included maintaining pond water levels increased natterjack toad populations or maintained newt populations. One replicated, controlled study in Brazil found that keeping rice fields flooded after harvest changed amphibian species composition, but not numbers of species or abundance. One replicated, controlled study in the USA found that draining ponds, particularly in the summer, significantly increased abundance and numbers of amphibian species. One before-and-after study in the USA found that maintaining pond water levels enabled successful breeding by dusky gopher frogs. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F833https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F833Wed, 28 Aug 2013 15:19:57 +0100Collected Evidence: Collected Evidence: Use prescribed fire or modifications to burning regime in grassland Two studies (including one before-and-after, site comparison study) in the USA and Argentina found that annual prescribed fires in grassland decreased numbers of amphibian species and abundance or, along with changes in grazing regime, increased rates of species loss. One replicated, before-and-after study in the USA found that spring, but not autumn or winter burns, decreased salamander abundance. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F862https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F862Fri, 06 Sep 2013 15:42:39 +0100Collected Evidence: Collected Evidence: Use prescribed fire or modifications to burning regime in forests Eight of 14 studies (including three randomized, replicated, controlled studies) in Australia, North America and the USA found no effect of prescribed forest fires on amphibian abundance or numbers of species. Four found that forest fires had mixed effects on amphibian abundance depending on species, species and year or season of burn. Three found that fires increased amphibian abundance or numbers of species. One found that abundance decreased with fires. Two studies (including one randomized, replicated, controlled study) in the USA found that numbers of amphibian species and abundance increased or abundance decreased with time since prescribed forest fires. One before-and-after study in the USA found that spotted salamander hatching success increased following a prescribed forest fire. Collected Evidencehttps%3A%2F%2Fconservationevidencejournal.com%2Factions%2F877https%3A%2F%2Fconservationevidencejournal.com%2Factions%2F877Thu, 12 Sep 2013 12:56:53 +0100