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Esteban Soibelzon - One of the best experts on this subject based on the ideXlab platform.
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a peculiar new pampatheriidae mammalia xenarthra cingulata from the pleistocene of argentina and comments on pampatheriidae diversity
PLOS ONE, 2015Co-Authors: Flávio Góis, Laureano Raúl González Ruiz, Gustavo Juan Scillatoyane, Esteban SoibelzonAbstract:Pampatheriidae are a group of cingulates native to South American that are known from the middle Miocene to the lower Holocene. Two genera have been recognized between the lower Pleistocene and the lower Holocene: Pampatherium Gervais and Ameghino (Ensenadan, Bonaerian and Lujanian, lower Pleistocene–lower Holocene) and Holmesina Simpson (Blancan, Irvingtonian, upper Pliocene–lower Holocene). They have been mainly differentiated by their Osteoderm morphology and cranio-dental characters. These taxa had a wide latitudinal distribution, extending from the southern part of South America (Peninsula Valdes, Argentina) to North America (Florida, USA). In this contribution, we describe a new genus and species of Pampatheriidae for the lower and middle Pleistocene of Buenos Aires Province and for the upper Pleistocene of Santa Fe Province (Argentina).The new taxon is represented by disarticulated Osteoderms, one skull element, two thoracic vertebrae and a right femur and patella. It has extremely complex Osteoderm ornamentations and particular morphological characters of the cranial element and femur that are not found in any other species of the family. This new taxon, recorded in the lower–middle Pleistocene (Ensenadan Stage/Age) and in the upper Pleistocene–early Holocene (Lujanian Stage/Age), is incorporated to the Pleistocene mammal assemblage of South America. Finally, the Pampatheriidae diversity is greater during the Lujanian Stage/Age than the Ensenadan Stage/Age.
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Tonnicinctus mirus gen. et sp. nov. (holotype, MLP 54-III-16-1).
2015Co-Authors: Flávio Góis, Laureano Raúl González Ruiz, Gustavo Juan Scillato-yané, Esteban SoibelzonAbstract:Osteoderms from different regions of the carapace. A–D, fixed Osteoderms of the scapular buckler; E, fixed Osteoderm of the pelvic buckler; F–G, semi-movable Osteoderms of the last row of the scapular buckler; H–K, movable Osteoderms; L–M, semi-movable Osteoderms of the first row of the pelvic buckler. Scale bars = 30 mm.
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Comparison of fixed Osteoderms from the buckler of Tonnicinctus mirus gen. et sp. nov. (holotype, MLP 54-III-16-1) with other pampatheres.
2015Co-Authors: Flávio Góis, Laureano Raúl González Ruiz, Gustavo Juan Scillato-yané, Esteban SoibelzonAbstract:*Not average (only one Osteoderm).**When there is only one type of Osteoderm is because the other is unknown.Comparison of fixed Osteoderms from the buckler of Tonnicinctus mirus gen. et sp. nov. (holotype, MLP 54-III-16-1) with other pampatheres.
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Comparison of semi-movable and movable Osteoderms of Tonnicinctus mirus gen. et sp. nov. (holotype, MLP 54-III-16-1) with other pampatheres.
2015Co-Authors: Flávio Góis, Laureano Raúl González Ruiz, Gustavo Juan Scillato-yané, Esteban SoibelzonAbstract:*Not average (only one Osteoderm).**When there is only one type of Osteoderm is because the other is unknown.Comparison of semi-movable and movable Osteoderms of Tonnicinctus mirus gen. et sp. nov. (holotype, MLP 54-III-16-1) with other pampatheres.
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Terminology for Pampatheriidae Osteoderms [31].
2015Co-Authors: Flávio Góis, Laureano Raúl González Ruiz, Gustavo Juan Scillato-yané, Esteban SoibelzonAbstract:A–B, semi-movable Osteoderm of the Tonnicinctus mirus gen. et sp. nov.; C, fixed Osteoderm of the scapular buckler, illustrations of the Tonnicinctus mirus gen. et sp. nov. (holotype, MLP 54-III-16-1). Abbreviations: aas, anterior articular surface; af, anterior foramina; es, exposed surface; id, intermediate portion; lce, longitudinal central elevation; ld, longitudinal depressions; lf, lateral foramina; lm, lateral margins; me, marginal elevation; lp, lateral projection; ss, sutural surface. Scale bars = 50 mm.
Flávio Góis - One of the best experts on this subject based on the ideXlab platform.
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a peculiar new pampatheriidae mammalia xenarthra cingulata from the pleistocene of argentina and comments on pampatheriidae diversity
PLOS ONE, 2015Co-Authors: Flávio Góis, Laureano Raúl González Ruiz, Gustavo Juan Scillatoyane, Esteban SoibelzonAbstract:Pampatheriidae are a group of cingulates native to South American that are known from the middle Miocene to the lower Holocene. Two genera have been recognized between the lower Pleistocene and the lower Holocene: Pampatherium Gervais and Ameghino (Ensenadan, Bonaerian and Lujanian, lower Pleistocene–lower Holocene) and Holmesina Simpson (Blancan, Irvingtonian, upper Pliocene–lower Holocene). They have been mainly differentiated by their Osteoderm morphology and cranio-dental characters. These taxa had a wide latitudinal distribution, extending from the southern part of South America (Peninsula Valdes, Argentina) to North America (Florida, USA). In this contribution, we describe a new genus and species of Pampatheriidae for the lower and middle Pleistocene of Buenos Aires Province and for the upper Pleistocene of Santa Fe Province (Argentina).The new taxon is represented by disarticulated Osteoderms, one skull element, two thoracic vertebrae and a right femur and patella. It has extremely complex Osteoderm ornamentations and particular morphological characters of the cranial element and femur that are not found in any other species of the family. This new taxon, recorded in the lower–middle Pleistocene (Ensenadan Stage/Age) and in the upper Pleistocene–early Holocene (Lujanian Stage/Age), is incorporated to the Pleistocene mammal assemblage of South America. Finally, the Pampatheriidae diversity is greater during the Lujanian Stage/Age than the Ensenadan Stage/Age.
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Tonnicinctus mirus gen. et sp. nov. (holotype, MLP 54-III-16-1).
2015Co-Authors: Flávio Góis, Laureano Raúl González Ruiz, Gustavo Juan Scillato-yané, Esteban SoibelzonAbstract:Osteoderms from different regions of the carapace. A–D, fixed Osteoderms of the scapular buckler; E, fixed Osteoderm of the pelvic buckler; F–G, semi-movable Osteoderms of the last row of the scapular buckler; H–K, movable Osteoderms; L–M, semi-movable Osteoderms of the first row of the pelvic buckler. Scale bars = 30 mm.
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Comparison of fixed Osteoderms from the buckler of Tonnicinctus mirus gen. et sp. nov. (holotype, MLP 54-III-16-1) with other pampatheres.
2015Co-Authors: Flávio Góis, Laureano Raúl González Ruiz, Gustavo Juan Scillato-yané, Esteban SoibelzonAbstract:*Not average (only one Osteoderm).**When there is only one type of Osteoderm is because the other is unknown.Comparison of fixed Osteoderms from the buckler of Tonnicinctus mirus gen. et sp. nov. (holotype, MLP 54-III-16-1) with other pampatheres.
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Comparison of semi-movable and movable Osteoderms of Tonnicinctus mirus gen. et sp. nov. (holotype, MLP 54-III-16-1) with other pampatheres.
2015Co-Authors: Flávio Góis, Laureano Raúl González Ruiz, Gustavo Juan Scillato-yané, Esteban SoibelzonAbstract:*Not average (only one Osteoderm).**When there is only one type of Osteoderm is because the other is unknown.Comparison of semi-movable and movable Osteoderms of Tonnicinctus mirus gen. et sp. nov. (holotype, MLP 54-III-16-1) with other pampatheres.
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Terminology for Pampatheriidae Osteoderms [31].
2015Co-Authors: Flávio Góis, Laureano Raúl González Ruiz, Gustavo Juan Scillato-yané, Esteban SoibelzonAbstract:A–B, semi-movable Osteoderm of the Tonnicinctus mirus gen. et sp. nov.; C, fixed Osteoderm of the scapular buckler, illustrations of the Tonnicinctus mirus gen. et sp. nov. (holotype, MLP 54-III-16-1). Abbreviations: aas, anterior articular surface; af, anterior foramina; es, exposed surface; id, intermediate portion; lce, longitudinal central elevation; ld, longitudinal depressions; lf, lateral foramina; lm, lateral margins; me, marginal elevation; lp, lateral projection; ss, sutural surface. Scale bars = 50 mm.
Laureano Raúl González Ruiz - One of the best experts on this subject based on the ideXlab platform.
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a peculiar new pampatheriidae mammalia xenarthra cingulata from the pleistocene of argentina and comments on pampatheriidae diversity
PLOS ONE, 2015Co-Authors: Flávio Góis, Laureano Raúl González Ruiz, Gustavo Juan Scillatoyane, Esteban SoibelzonAbstract:Pampatheriidae are a group of cingulates native to South American that are known from the middle Miocene to the lower Holocene. Two genera have been recognized between the lower Pleistocene and the lower Holocene: Pampatherium Gervais and Ameghino (Ensenadan, Bonaerian and Lujanian, lower Pleistocene–lower Holocene) and Holmesina Simpson (Blancan, Irvingtonian, upper Pliocene–lower Holocene). They have been mainly differentiated by their Osteoderm morphology and cranio-dental characters. These taxa had a wide latitudinal distribution, extending from the southern part of South America (Peninsula Valdes, Argentina) to North America (Florida, USA). In this contribution, we describe a new genus and species of Pampatheriidae for the lower and middle Pleistocene of Buenos Aires Province and for the upper Pleistocene of Santa Fe Province (Argentina).The new taxon is represented by disarticulated Osteoderms, one skull element, two thoracic vertebrae and a right femur and patella. It has extremely complex Osteoderm ornamentations and particular morphological characters of the cranial element and femur that are not found in any other species of the family. This new taxon, recorded in the lower–middle Pleistocene (Ensenadan Stage/Age) and in the upper Pleistocene–early Holocene (Lujanian Stage/Age), is incorporated to the Pleistocene mammal assemblage of South America. Finally, the Pampatheriidae diversity is greater during the Lujanian Stage/Age than the Ensenadan Stage/Age.
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Tonnicinctus mirus gen. et sp. nov. (holotype, MLP 54-III-16-1).
2015Co-Authors: Flávio Góis, Laureano Raúl González Ruiz, Gustavo Juan Scillato-yané, Esteban SoibelzonAbstract:Osteoderms from different regions of the carapace. A–D, fixed Osteoderms of the scapular buckler; E, fixed Osteoderm of the pelvic buckler; F–G, semi-movable Osteoderms of the last row of the scapular buckler; H–K, movable Osteoderms; L–M, semi-movable Osteoderms of the first row of the pelvic buckler. Scale bars = 30 mm.
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Comparison of fixed Osteoderms from the buckler of Tonnicinctus mirus gen. et sp. nov. (holotype, MLP 54-III-16-1) with other pampatheres.
2015Co-Authors: Flávio Góis, Laureano Raúl González Ruiz, Gustavo Juan Scillato-yané, Esteban SoibelzonAbstract:*Not average (only one Osteoderm).**When there is only one type of Osteoderm is because the other is unknown.Comparison of fixed Osteoderms from the buckler of Tonnicinctus mirus gen. et sp. nov. (holotype, MLP 54-III-16-1) with other pampatheres.
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Comparison of semi-movable and movable Osteoderms of Tonnicinctus mirus gen. et sp. nov. (holotype, MLP 54-III-16-1) with other pampatheres.
2015Co-Authors: Flávio Góis, Laureano Raúl González Ruiz, Gustavo Juan Scillato-yané, Esteban SoibelzonAbstract:*Not average (only one Osteoderm).**When there is only one type of Osteoderm is because the other is unknown.Comparison of semi-movable and movable Osteoderms of Tonnicinctus mirus gen. et sp. nov. (holotype, MLP 54-III-16-1) with other pampatheres.
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Terminology for Pampatheriidae Osteoderms [31].
2015Co-Authors: Flávio Góis, Laureano Raúl González Ruiz, Gustavo Juan Scillato-yané, Esteban SoibelzonAbstract:A–B, semi-movable Osteoderm of the Tonnicinctus mirus gen. et sp. nov.; C, fixed Osteoderm of the scapular buckler, illustrations of the Tonnicinctus mirus gen. et sp. nov. (holotype, MLP 54-III-16-1). Abbreviations: aas, anterior articular surface; af, anterior foramina; es, exposed surface; id, intermediate portion; lce, longitudinal central elevation; ld, longitudinal depressions; lf, lateral foramina; lm, lateral margins; me, marginal elevation; lp, lateral projection; ss, sutural surface. Scale bars = 50 mm.
Bronwyn Harch - One of the best experts on this subject based on the ideXlab platform.
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catchment specific element signatures in estuarine crocodiles crocodylus porosus from the alligator rivers region northern australia
Science of The Total Environment, 2002Co-Authors: Scott J Markich, Ross A Jeffree, Bronwyn HarchAbstract:The concentrations of Na, K, Ca, Mg, Ba, Sr, Fe, Al, Mn, Zn, Pb, Cu, Ni, Cr, Co, Se, U and Ti were determined in the Osteoderms and/or flesh of estuarine crocodiles (Crocodylus porosus) captured in three adjacent catchments within the Alligator Rivers Region (ARR) of northern Australia. Results from multivariate analysis of variance showed that when all metals were considered simultaneously, catchment effects were significant (P < or = 0.05). Despite considerable within-catchment variability, linear discriminant analysis (LDA) showed that differences in elemental signatures in the Osteoderms and/or flesh of C. porosus amongst the catchments were sufficient to classify individuals accurately to their catchment of occurrence. Using cross-validation, the accuracy of classifying a crocodile to its catchment of occurrence was 76% for Osteoderms and 60% for flesh. These data suggest that Osteoderms provide better predictive accuracy than flesh for discriminating crocodiles amongst catchments. There was no advantage in combining the Osteoderm and flesh results to increase the accuracy of classification (i.e. 67%). Based on the discriminant function coefficients for the Osteoderm data, Ca, Co, Mg and U were the most important elements for discriminating amongst the three catchments. For flesh data, Ca, K, Mg, Na, Ni and Pb were the most important metals for discriminating amongst the catchments. Reasons for differences in the elemental signatures of crocodiles between catchments are generally not interpretable, due to limited data on surface water and sediment chemistry of
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catchment specific element signatures in estuarine crocodiles crocodylus porosus from the alligator rivers region northern australia
Science of The Total Environment, 2002Co-Authors: Scott J Markich, Ross A Jeffree, Bronwyn HarchAbstract:Abstract The concentrations of Na, K, Ca, Mg, Ba, Sr, Fe, Al, Mn, Zn, Pb, Cu, Ni, Cr, Co, Se, U and Ti were determined in the Osteoderms and/or flesh of estuarine crocodiles ( Crocodylus porosus ) captured in three adjacent catchments within the Alligator Rivers Region (ARR) of northern Australia. Results from multivariate analysis of variance showed that when all metals were considered simultaneously, catchment effects were significant ( P ≤0.05). Despite considerable within-catchment variability, linear discriminant analysis (LDA) showed that differences in elemental signatures in the Osteoderms and/or flesh of C. porosus amongst the catchments were sufficient to classify individuals accurately to their catchment of occurrence. Using cross-validation, the accuracy of classifying a crocodile to its catchment of occurrence was 76% for Osteoderms and 60% for flesh. These data suggest that Osteoderms provide better predictive accuracy than flesh for discriminating crocodiles amongst catchments. There was no advantage in combining the Osteoderm and flesh results to increase the accuracy of classification (i.e. 67%). Based on the discriminant function coefficients for the Osteoderm data, Ca, Co, Mg and U were the most important elements for discriminating amongst the three catchments. For flesh data, Ca, K, Mg, Na, Ni and Pb were the most important metals for discriminating amongst the catchments. Reasons for differences in the elemental signatures of crocodiles between catchments are generally not interpretable, due to limited data on surface water and sediment chemistry of the catchments or chemical composition of dietary items of C. porosus . From a wildlife management perspective, the provenance or source catchment(s) of ‘problem’ crocodiles captured at settlements or recreational areas along the ARR coastline may be established using catchment-specific elemental signatures. If the incidence of problem crocodiles can be reduced in settled or recreational areas by effective management at their source, then public safety concerns about these predators may be moderated, as well as the cost of their capture and removal.
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catchment specific element signatures in estuarine crocodiles crocodylus porosus from the alligator rivers region northern australia
Science & Engineering Faculty, 2002Co-Authors: Scott J Markich, Ross A Jeffree, Bronwyn HarchAbstract:The concentrations of Na, K, Ca, Mg, Ba, Sr, Fe, Al, Mn, Zn, Pb, Cu, Ni, Cr, Co, Se, U and Ti were determined in the Osteoderms and/or flesh of estuarine crocodiles (Crocodylus porosus) captured in three adjacent catchments within the Alligator Rivers Region (ARR) of northern Australia. Results from multivariate analysis of variance showed that when all metals were considered simultaneously, catchment effects were significant (P≤0.05). Despite considerable within-catchment variability, linear discriminant analysis (LDA) showed that differences in elemental signatures in the Osteoderms and/or flesh of C. porosus amongst the catchments were sufficient to classify individuals accurately to their catchment of occurrence. Using cross-validation, the accuracy of classifying a crocodile to its catchment of occurrence was 76% for Osteoderms and 60% for flesh. These data suggest that Osteoderms provide better predictive accuracy than flesh for discriminating crocodiles amongst catchments. There was no advantage in combining the Osteoderm and flesh results to increase the accuracy of classification (i.e. 67%). Based on the discriminant function coefficients for the Osteoderm data, Ca, Co, Mg and U were the most important elements for discriminating amongst the three catchments. For flesh data, Ca, K, Mg, Na, Ni and Pb were the most important metals for discriminating amongst the catchments. Reasons for differences in the elemental signatures of crocodiles between catchments are generally not interpretable, due to limited data on surface water and sediment chemistry of the catchments or chemical composition of dietary items of C. porosus. From a wildlife management perspective, the provenance or source catchment(s) of 'problem' crocodiles captured at settlements or recreational areas along the ARR coastline may be established using catchment-specific elemental signatures. If the incidence of problem crocodiles can be reduced in settled or recreational areas by effective management at their source, then public safety concerns about these predators may be moderated, as well as the cost of their capture and removal. Copyright © 2002 Elsevier Science B.V.
Scott J Markich - One of the best experts on this subject based on the ideXlab platform.
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catchment specific element signatures in estuarine crocodiles crocodylus porosus from the alligator rivers region northern australia
Science of The Total Environment, 2002Co-Authors: Scott J Markich, Ross A Jeffree, Bronwyn HarchAbstract:The concentrations of Na, K, Ca, Mg, Ba, Sr, Fe, Al, Mn, Zn, Pb, Cu, Ni, Cr, Co, Se, U and Ti were determined in the Osteoderms and/or flesh of estuarine crocodiles (Crocodylus porosus) captured in three adjacent catchments within the Alligator Rivers Region (ARR) of northern Australia. Results from multivariate analysis of variance showed that when all metals were considered simultaneously, catchment effects were significant (P < or = 0.05). Despite considerable within-catchment variability, linear discriminant analysis (LDA) showed that differences in elemental signatures in the Osteoderms and/or flesh of C. porosus amongst the catchments were sufficient to classify individuals accurately to their catchment of occurrence. Using cross-validation, the accuracy of classifying a crocodile to its catchment of occurrence was 76% for Osteoderms and 60% for flesh. These data suggest that Osteoderms provide better predictive accuracy than flesh for discriminating crocodiles amongst catchments. There was no advantage in combining the Osteoderm and flesh results to increase the accuracy of classification (i.e. 67%). Based on the discriminant function coefficients for the Osteoderm data, Ca, Co, Mg and U were the most important elements for discriminating amongst the three catchments. For flesh data, Ca, K, Mg, Na, Ni and Pb were the most important metals for discriminating amongst the catchments. Reasons for differences in the elemental signatures of crocodiles between catchments are generally not interpretable, due to limited data on surface water and sediment chemistry of
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catchment specific element signatures in estuarine crocodiles crocodylus porosus from the alligator rivers region northern australia
Science of The Total Environment, 2002Co-Authors: Scott J Markich, Ross A Jeffree, Bronwyn HarchAbstract:Abstract The concentrations of Na, K, Ca, Mg, Ba, Sr, Fe, Al, Mn, Zn, Pb, Cu, Ni, Cr, Co, Se, U and Ti were determined in the Osteoderms and/or flesh of estuarine crocodiles ( Crocodylus porosus ) captured in three adjacent catchments within the Alligator Rivers Region (ARR) of northern Australia. Results from multivariate analysis of variance showed that when all metals were considered simultaneously, catchment effects were significant ( P ≤0.05). Despite considerable within-catchment variability, linear discriminant analysis (LDA) showed that differences in elemental signatures in the Osteoderms and/or flesh of C. porosus amongst the catchments were sufficient to classify individuals accurately to their catchment of occurrence. Using cross-validation, the accuracy of classifying a crocodile to its catchment of occurrence was 76% for Osteoderms and 60% for flesh. These data suggest that Osteoderms provide better predictive accuracy than flesh for discriminating crocodiles amongst catchments. There was no advantage in combining the Osteoderm and flesh results to increase the accuracy of classification (i.e. 67%). Based on the discriminant function coefficients for the Osteoderm data, Ca, Co, Mg and U were the most important elements for discriminating amongst the three catchments. For flesh data, Ca, K, Mg, Na, Ni and Pb were the most important metals for discriminating amongst the catchments. Reasons for differences in the elemental signatures of crocodiles between catchments are generally not interpretable, due to limited data on surface water and sediment chemistry of the catchments or chemical composition of dietary items of C. porosus . From a wildlife management perspective, the provenance or source catchment(s) of ‘problem’ crocodiles captured at settlements or recreational areas along the ARR coastline may be established using catchment-specific elemental signatures. If the incidence of problem crocodiles can be reduced in settled or recreational areas by effective management at their source, then public safety concerns about these predators may be moderated, as well as the cost of their capture and removal.
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catchment specific element signatures in estuarine crocodiles crocodylus porosus from the alligator rivers region northern australia
Science & Engineering Faculty, 2002Co-Authors: Scott J Markich, Ross A Jeffree, Bronwyn HarchAbstract:The concentrations of Na, K, Ca, Mg, Ba, Sr, Fe, Al, Mn, Zn, Pb, Cu, Ni, Cr, Co, Se, U and Ti were determined in the Osteoderms and/or flesh of estuarine crocodiles (Crocodylus porosus) captured in three adjacent catchments within the Alligator Rivers Region (ARR) of northern Australia. Results from multivariate analysis of variance showed that when all metals were considered simultaneously, catchment effects were significant (P≤0.05). Despite considerable within-catchment variability, linear discriminant analysis (LDA) showed that differences in elemental signatures in the Osteoderms and/or flesh of C. porosus amongst the catchments were sufficient to classify individuals accurately to their catchment of occurrence. Using cross-validation, the accuracy of classifying a crocodile to its catchment of occurrence was 76% for Osteoderms and 60% for flesh. These data suggest that Osteoderms provide better predictive accuracy than flesh for discriminating crocodiles amongst catchments. There was no advantage in combining the Osteoderm and flesh results to increase the accuracy of classification (i.e. 67%). Based on the discriminant function coefficients for the Osteoderm data, Ca, Co, Mg and U were the most important elements for discriminating amongst the three catchments. For flesh data, Ca, K, Mg, Na, Ni and Pb were the most important metals for discriminating amongst the catchments. Reasons for differences in the elemental signatures of crocodiles between catchments are generally not interpretable, due to limited data on surface water and sediment chemistry of the catchments or chemical composition of dietary items of C. porosus. From a wildlife management perspective, the provenance or source catchment(s) of 'problem' crocodiles captured at settlements or recreational areas along the ARR coastline may be established using catchment-specific elemental signatures. If the incidence of problem crocodiles can be reduced in settled or recreational areas by effective management at their source, then public safety concerns about these predators may be moderated, as well as the cost of their capture and removal. Copyright © 2002 Elsevier Science B.V.
