Australian Saltwater Crocodiles Crocodylus Porosus

Reptiles and Amphibians of Australia is a complete guide to Australia’s rich and varied herpetofauna, including frogs, crocodiles, turtles, tortoises, lizards and snakes. For each of the 1218 species there is a description of its appearance, distribution and habits. These descriptions are also accompanied by distribution maps and, in many cases, one of the book's more than 1000 colour photographs of living animals. The book also includes 130 simple-to-use dichotomous keys, accompanied by hundreds of explanatory drawings, that in most cases allow a specimen in hand to be identified. In addition, it has a comprehensive list of scientific references for those wishing to conduct more in-depth research, an extensive glossary, and basic guides to the collection, preservation and captive care of specimens. This classic work was originally published in 1975. The updated seventh edition contains a new Appendix that discusses recent changes and lists over 80 new or resurrected species and genera that have been added to the Australian frog and reptile fauna since the 2014 edition.

Human wildlife conflict is a critical aspect of many societies, as it often plays a large role in government decisions. The iconic saltwater Australian crocodile (Crocodylus porosus) is one example of a species that has become the subject of human-wildlife conflict in Queensland, Australia. Decades of intensive hunting in Queensland, beginning at the time of the Second World War, drastically depleted crocodile populations, leading to a federal embargo on crocodile exports in 1972 and their protection in Queensland in 1974. Since protection, populations appear to be recovering with increasing densities in the north and increased sightings along the southernmost edge of their observed range. However, research has indicated that population recovery is slower than in the adjacent Northern Territory, although the drivers of this slow recovery and southern sightings remain unknown. Two potential drivers include range expansion due to climate change or re-colonization of areas from which they were previously extirpated. This study uses a variety of spatial and temporal density analyses in relation to human population size to examine the abundance and range status of crocodiles in Australia. It compares the distribution of sightings, nests and attacks over pre-exploitation (1871-1944), heavy exploitation (1945-1971) and post-exploitation (1972-2015) time periods to assess three related hypotheses: First, crocodile populations are expanding outside of known historical ranges. Second, crocodile populations have recovered to historical baseline abundances in areas that abut regions of high human population density. Third, crocodile attack rates have increased over time relative to human population size. While crocodile ranges do not appear to be expanding, they do heavily overlap with the highest anthropogenically altered areas. Furthermore, although crocodile abundance is difficult to characterize, attack rates have remained relatively low since the pre-exploitation period. T

World of crocodilians - Habitats - Saltwater crocodiles - Freshwater crocodiles - Crocodile attacks - Crocodiles and man.

Biology and Evolution of Crocodylians is a comprehensive review of current knowledge about the world's largest and most famous living reptiles. Gordon Grigg's authoritative and accessible text and David Kirshner's stunning interpretive artwork and colour photographs combine expertly in this contemporary celebration of crocodiles, alligators, caimans and gharials. This book showcases the skills and capabilities that allow crocodylians to live how and where they do. It covers the biology and ecology of the extant species, conservation issues, crocodylian–human interaction and the evolutionary history of the group, and includes a vast amount of new information; 25 per cent of 1100 cited publications have appeared since 2007. Richly illustrated with more than 500 colour photographs and black and white illustrations, this book will be a benchmark reference work for crocodylian biologists, herpetologists and vertebrate biologists for years to come.

Saltwater Crocodiles are among the largest reptiles on Earth. Learn about their history, behavior, lifecycle, and the conservation efforts that are being done to protect these prehistoric hunters descended from dinosaurs.