Decline of a Tropical Montane Amphibian Fauna

@article{Lips1998DeclineOA,
  title={Decline of a Tropical Montane Amphibian Fauna},
  author={Karen R. Lips},
  journal={Conservation Biology},
  year={1998},
  volume={12}
}
  • K. Lips
  • Published 1 February 1998
  • Environmental Science
  • Conservation Biology
On the basis of surveys conducted between 1991 and 1996, I report a decline of the amphibian fauna at Las Tablas, Puntarenas Province, Costa Rica. I propose that the reduction in the abundance of Atelopus chiriquiensis and Hyla calypsa, the presence of dead and dying individuals of six species of frogs and salamanders, and changes in population sex ratios of A. chiriquiensis and H. calypsa are evidence for “atypical” population fluctuations. Species with both aquatic eggs and aquatic larvae… 
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References

SHOWING 1-10 OF 50 REFERENCES
The abundance and diversity of the herpetofaunas of tropical forest litters
TLDR
Quantitative and qualitative samples of amphibian and lizard faunas were taken from forest litter in Costa Rica and compared with similar samples collected in Borneo, the Philippines, and Panama to make the first quantitative comparisons between Old and New World tropical vertebrate fauna.
Collapse of a Regional Frog Fauna in the Yosemite Area of the California Sierra Nevada, USA
There has been much concern about widespread declines among amphibians, but efforts to determine the extent and magnitude of these declines have been hampered by scarcity of comparative inventory
Decimations, Extinctions, and Colonizations of Frog Populations in Southeast Brazil and Their Evolutionary Implications
TLDR
Analysis of a 35 year data base on frogs from species assemblages in southeastern Brazil, suggests three kinds of species changes: the appearance of Hyla albopunctata at BorACEia; the possible extinction of Fritziana ohausi at Boraceia; and population reductions and extinctions of a number of species at several localities in southeastern Brazilian in 1979.
Potential Effects of Climate Change on Two Neotropical Amphibian Assemblages
TLDR
It is expected that increased temperature, increased length of dry season, decreased soil moisture, and increased inter-annual rainfall variability will affect Neotropical frogs strongly and affect frogs by changing reproductive success and breeding periodicity, and indirectly by altering the invertebrate prey base.
Hypothesis Concerning the Causes of the Disappearance of Boreal Toads from the Mountains of Colorado
TLDR
The presence of disease in declining populations of these toads is used in conjunction with a variety of data from the literature to formulate a working hypothesis for explaining the cause of the decline of this species.
The Second Collection of, and Variation in, the Rare Neotropical Toad Bufo peripatetes
TLDR
There is marked sexual size dimorphism; females are longer (SVL) than males with proportionally smaller parotoid glands, shorter heads, and longer tibiae for the species.
Amphibian declines and climate disturbance: the case of the golden toad and the harlequin frog
The endemic golden toad (Bufo periglenes) was abundant in Costa Rica’s Monteverde Cloud Forest Preserve in April–May 1987 but afterwards disappeared, along with local populations of the harlequin
Phylogeny and Taxonomy of the Rana palmipes Group (Salientia: Ranidae)
TLDR
Frogs previously referred to R. maculata from the Maya Mountains of Belize are described as a new species, R. juliani, and diagnostic keys for both adults and tadpoles are provided for the species groups of Neotropical Rana.
Apparent Decline of the Golden Toad: Underground or Extinct?
TLDR
To examine the species' apparent decline, data on rainfall, water temperature, and pH of the breeding pools suggest that warmer water temperatures and less advective precipitation during dry season post-1987 may have produced adverse breeding conditions.
Changes in the composition of mountain stream frog communities in the Atlantic mountains of Brazil: Frogs as indicators of environmental deteriorations?
Observations during the past 15 years on mountain stream breeding frogs in the Atlantic Mountains around Santa Teresa in the State of Espirito Santo, Brazil, indicate that some species, in particular
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