4.2 Article

Thirty years of amphibian surveys in the Ukagurus Mountains of Tanzania reveal new species, yet others are in decline

期刊

AFRICAN JOURNAL OF HERPETOLOGY
卷 71, 期 2, 页码 119-138

出版社

TAYLOR & FRANCIS LTD
DOI: 10.1080/21564574.2022.2043945

关键词

L Ceriaco; caecilians; climate change; deforestation; endemism; frogs; Mamiwa-Kisara

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资金

  1. Systematics Association Research Fund grant
  2. Natural History Museum, London
  3. NERC studentship
  4. Fulbright Scholarship
  5. Mohamed bin Zayed Species Conservation Fund [180518076]

向作者/读者索取更多资源

Records of biodiversity are crucial for assessing conservation priorities. However, there is a lack of baseline data for regions of key biodiversity importance. This study focuses on compiling and quantifying amphibian survey efforts in the Ukaguru Mountains in Tanzania over the past 30 years. The results show that although the total species numbers remain low compared to other Eastern Arc Mountains, the surveys frequently recorded new and endemic species. However, there are concerns about the declining population of some endemic species and the increasing deforestation rate in the region.
Records of biodiversity over time are important resources for assessing conservation priorities. However, such baseline data are missing for regions of key biodiversity importance. The Eastern Arc Mountains of Tanzania are known for their species richness and endemism, but not all mountain blocks have received the same attention. The Ukaguru Mountains, for example, have only infrequently been surveyed by herpetologists, with the first known herpetological survey in 1990. Here we compile and quantify all amphibian survey efforts in the Ukaguru Mountains in the past 30 years, publish an updated species list and comment on the health of amphibian populations and their habitat. We report on fourteen described species of amphibians, with potentially three additional species awaiting formal description. Of these seventeen lineages, seven are endemic to the Ukaguru Mountains. Although total species numbers remain low, compared with other Eastern Arc Mountains, surveys frequently recorded new species for the Ukaguru Mountains and for science. Worryingly, however, endemics, such as the monotypic bufonid Churamiti maridadi, have not been recorded in the past fifteen years. Our analyses show the region is becoming warmer and drier and is experiencing an alarming rate of deforestation. We find that over the past 30 years, dense forest cover inside the boundaries of the forest reserves has reduced by 8.4%.

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