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Decline in amphibian populations. The Golden toad of Monteverde, Costa Rica, was among the first casualties of amphibian declines. Formerly abundant, it was last seen in 1989. Since the 1980s, decreases in amphibian populations, including population decline and localized mass extinctions, have been observed in locations all over the world.
The Texas blind salamander (Eurycea rathbuni) is a rare and endangered cave -dwelling troglobite amphibian native to San Marcos, Hays County, Texas, specifically the San Marcos Pool of the Edwards Aquifer. This species resembles the olm, another stygofaunal salamander from Europe. Unlike the olm, this amphibian's body is not as elongated, and ...
Although populations can decline from natural causes, and it is difficult to prove the exact reason for a specific reptile's decline, human actions are behind most of the species' problems. Gibbons et al. describe six causes of reptile reductions, incidentally furnishing several examples of state reptile species impacted. [115] Overharvesting.
Reasons for amphibian declines are often termed ‘enigmatic' because the cause is unknown. Why some areas are affected by the fungus while others are not is not fully understood. Oscillating factors such as climate, habitat suitability, and population density may be factors which cause the fungus to infect amphibians of a given area.
The Texas toad is a common amphibian found in grasslands and deserts across the state. Known for its distinctive mating call during the rainy season, it thrives in the varied climates of Texas.
Chippindale, Price, and Hillis, 1993 [ 4 ] The Barton Springs salamander (Eurycea sosorum) is an endangered lungless salamander. [ 1 ] It is endemic to Texas, United States. It was first found in Barton Springs in Austin, but is now also known from other localities in the nearby Travis and Hays Counties. [ 5 ][ 6 ] Barton Springs is located ...
However, many of the causes of amphibian declines are still poorly understood, and the topic is currently a subject of ongoing research. Modeling results found that the current extinction rate of amphibians could be 211 times greater than the background extinction rate. This estimate even goes up to 25,000–45,000 times if endangered species ...
We find that amphibians are the most threatened vertebrate class (40.7% of species are globally threatened). The updated Red List Index shows that the status of amphibians is deteriorating globally, particularly for salamanders and in the Neotropics. Disease and habitat loss drove 91% of status deteriorations between 1980 and 2004.