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Journal articles on the topic 'Frog assemblages'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Rocha, CFD, FH Hatano, D. Vrcibradic, and M. Van Sluys. "Frog species richness, composition and beta-diversity in coastal Brazilian restinga habitats." Brazilian Journal of Biology 68, no. 1 (2008): 101–7. http://dx.doi.org/10.1590/s1519-69842008000100014.

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We studied the species richness and composition of frogs in 10 restinga habitats (sand dune environments dominated by herbaceous and shrubby vegetation) along approximately 1500 km of coastal areas of three Brazilian States: Rio de Janeiro (Grumari, Maricá, Massambaba, Jurubatiba and Grussaí), Espírito Santo (Praia das Neves and Setiba) and Bahia (Prado and Trancoso). We estimated beta-diversity and similarity among areas and related these parameters to geographic distance between areas. All areas were surveyed with a similar sampling procedure. We found 28 frog species belonging to the famili

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2

Folt, Brian, and Craig Guyer. "Habitat-dependent effects of predatory spiders on prey frogs in a Neotropical wet forest." Journal of Tropical Ecology 37, no. 5 (2021): 214–21. http://dx.doi.org/10.1017/s0266467421000274.

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AbstractIn seasonal wet Neotropical forests, many studies have suggested that species-rich terrestrial frog assemblages are regulated bottom-up by the abundance of leaf litter. However, terrestrial frogs are prey to a diverse community of predators, and no studies have tested for top-down effects of predators on this or other anuran assemblages. Here, we used an extensive field dataset to model the relative contribution of food resources, microhabitat resources and predators towards the occupancy and detection of two frog species (Craugastor bransfordii and Oophaga pumilio) at La Selva, Costa

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3

Terblanche, Naas, and John Measey. "The conservation value of freshwater habitats for frog communities of lowland fynbos." PeerJ 11 (June 5, 2023): e15516. http://dx.doi.org/10.7717/peerj.15516.

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Amphibians are more threatened than any other vertebrate class, yet evidence for many threats is missing. The Cape lowland fynbos (endemic scrub biome) is threatened by habitat loss, and natural temporary freshwater habitats are removed in favour of permanent impoundments. In this study, we determine amphibian assemblages across different freshwater habitat types with special attention to the presence of invasive fish. We find that anuran communities differ primarily by habitat type, with permanent water habitats having more widespread taxa, while temporary water bodies have more range restric

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4

Dayrell, Jussara Santos, William Ernest Magnusson, Paulo Estefano Dineli Bobrowiec, and Albertina Pimentel Lima. "Impacts of an Amazonian hydroelectric dam on frog assemblages." PLOS ONE 16, no. 6 (2021): e0244580. http://dx.doi.org/10.1371/journal.pone.0244580.

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About 90% of the Amazon’s energy potential remains unexploited, with many large hydroelectric dams yet to be built, so it is important to understand how terrestrial vertebrates are affected by reservoir formation and habitat loss. We investigated the influence of the construction of the Santo Antônio Hydroelectric dam on the Madeira River in southwestern Amazonia on the structure of frog assemblages based on samples collected in two years before the dam flooded (pre-stage) and one (post1-stage) and four years (post2-stage) after its construction. We surveyed five 500-ha plot systems three time

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5

Dahl, Chris, Stephen J. Richards, and Vojtech Novotny. "The Sepik River (Papua New Guinea) is not a dispersal barrier for lowland rain-forest frogs." Journal of Tropical Ecology 29, no. 6 (2013): 477–83. http://dx.doi.org/10.1017/s0266467413000527.

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Abstract:Major tropical rivers have been suggested to be important dispersal barriers that increase the beta diversity of animal communities in lowland rain forests. We tested this hypothesis using assemblages of frogs in the floodplains of the Sepik River, a major river system in Papua New Guinea. We surveyed frogs at five sites within a continuous 150 × 500-km area of lowland rain forest bisected by the Sepik, using standardized visual and auditory survey techniques. We documented 769 frogs from 44 species. The similarity in species composition decreased with logarithm of geographical distan

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6

Ernst, Raffael, and Mark-Oliver Rödel. "Patterns of community composition in two tropical tree frog assemblages: separating spatial structure and environmental effects in disturbed and undisturbed forests." Journal of Tropical Ecology 24, no. 2 (2008): 111–20. http://dx.doi.org/10.1017/s0266467407004737.

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Abstract:An on-going controversy in community ecology involves the debate about the many factors that affect the assembly and composition of a given species assemblage. Theory suggests that community composition is influenced by environmental gradients or biotic processes. This study examines patterns of community composition in two tropical tree frog assemblages of primary and exploited lowland rain-forest sites in the Guiana Shield area of central Guyana, South America and the Upper Guinean rain-forest block of south-western Côte d'Ivoire, West Africa. We tested community composition and spe

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7

Hocknull, Scoot A. "Ecological succession during the late Cainozoic of central eastern Queensland: extinction of a diverse rainforest community." Memoirs of the Queensland Museum 51, no. 1 (2005): 39——122. https://doi.org/10.5281/zenodo.6390123.

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New late Cainozoic faunal assemblages are preliminarily identified and described from central eastern Queensland. Biocorrelation of the sites has determined that the oldest faunal assemblages are Early Pliocene in age, with younger faunas from the Plio-Pleistocene, late Pleistocene and Holocene. Pliocene faunal assemblages are characterised by rainforest-specialist frog, squamate and mammalian taxa. ...

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8

Mageski, Marcio Marques, Rodrigo Barbosa Ferreira, Larissa Corteletti da Costa, Paulo Roberto Jesus, and Paulo Dias Ferreira. "Frog assemblage associated with bromeliads in a sandy coastal plain in the state of Espírito Santo, southeastern Brazil." Papéis Avulsos de Zoologia (São Paulo) 57, no. 34 (2017): 445. http://dx.doi.org/10.11606/0031-1049.2017.57.34.

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Amphibians may use bromeliads for reproduction (i.e., bromeligenous species) or only for refuge and foraging (i.e., bromelicolous species). The partition of bromeliad resources is essential to maintain the coexistence of the associated assemblages. We sampled 913 bromeliads in a sandy coastal plain (i.e., restinga habitat) in southeastern Brazil and found 234 frogs belonging to seven species. One of the frog species was bromeligenous and the other six were facultative bromelicolous. The bromeliads of the genus Aechmea were the most frequently used by frogs. The low degree of frog occupancy of

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9

Costa-Campos, Carlos Eduardo, and Freire Eliza Maria Xavier. "Richness and composition of anuran assemblages from an Amazonian savanna." ZooKeys 843 (May 9, 2019): 149–69. https://doi.org/10.3897/zookeys.843.33365.

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The Amazonian savannas occupy approximately 150,000 km<sup>2</sup> of the Brazilian Amazon, occurring in scattered isolated patches over large areas of forest in the states of Amapá, Amazonas, Pará, Roraima and Rondônia. Despite having considerable variation in the Anuran composition between locations and between the savanna's physiognomies, a systematic and geographically wide sampling has not been performed for the savanna from Amapá yet, located in the north of Brazil, eastern Amazonia. In this perspective, a study was conducted on the richness, composition, diversity, and abundance of Anur

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10

Zainudin, Ramlah. "ASSEMBLAGES OF FROGS SPECIES AT BALAMBANGAN ISLAND, SABAH, MALAYSIA." Borneo Journal of Resource Science and Technology 1, no. 1 (2016): 59–62. http://dx.doi.org/10.33736/bjrst.265.2011.

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Borneo is well known as a hotspot for biodiversity, yet species assemblages at smaller islands in the East Malaysian states of Sabah and Sarawak, are not well documented. The survey of frogs in Balambangan Island, which is situated at the west coast of Sabah, was the first attempt to look at the occurrence of frogs at smaller islands in the state. Sampling of frogs was conducted at the coastal areas of Kampung Selamat and limestone forest for four nights sampling period. Visual encounter survey and transect line were used to sample the frogs which were captured by hand. A total of seven specie

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11

Parris, Kirsten M., and Michael A. McCarthy. "What influences the structure of frog assemblages at forest streams?" Austral Ecology 24, no. 5 (1999): 495–502. http://dx.doi.org/10.1046/j.1442-9993.1999.00989.x.

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12

Kopp, Katia, and Paula C. Eterovick. "Factors influencing spatial and temporal structure of frog assemblages at ponds in southeastern Brazil." Journal of Natural History 40, no. 29-31 (2006): 1813–30. https://doi.org/10.1080/00222930601017403.

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Kopp, Katia, Eterovick, Paula C. (2006): Factors influencing spatial and temporal structure of frog assemblages at ponds in southeastern Brazil. Journal of Natural History 40 (29-31): 1813-1830, DOI: 10.1080/00222930601017403, URL: http://dx.doi.org/10.1080/00222930601017403

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13

Jośko, Paulina, and Maciej Pabijan. "Recent shifts in taxonomic compositions of water frog populations (Anura: Pelophylax) inhabiting fish ponds in southern Poland." Amphibia-Reptilia 42, no. 1 (2020): 59–72. http://dx.doi.org/10.1163/15685381-bja10031.

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Abstract In Central Europe, water frog species coexist in assemblages consisting of Pelophylax lessonae, P. ridibundus and their hybridogenetic hybrid, P. esculentus. Population compositions are poorly understood, partly because of difficulties in distinguishing hybrids from parentals by means of morphology alone. Environmental change and human-mediated, cryptic introductions of non-native water frog species have modified local assemblages. In this contribution we examined the structure of nine water frog populations inhabiting mostly large fish ponds in the Upper Vistula river valley of south

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14

Rivera, Nelson, and Brian Folt. "Community assembly of glass frogs (Centrolenidae) in a Neotropical wet forest: a test of the river zonation hypothesis." Journal of Tropical Ecology 34, no. 2 (2018): 108–20. http://dx.doi.org/10.1017/s0266467418000068.

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Abstract:The river zonation hypothesis predicts that abiotic and biotic conditions along riparian gradients drive variation in animal communities. Glass frogs are a diverse group of Neotropical anurans that use riparian habitats exclusively for oviposition and larval development, but little is known about how glass frog communities are distributed across riparian gradients. Here, we measured glass frog community assembly across a gradient of riparian habitats from first- to fifth-order streams at La Selva Biological Station, Costa Rica. We performed repeated nocturnal frog calling surveys and

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15

WOODHAMS, DOUGLAS C., and ROSS A. ALFORD. "Ecology of Chytridiomycosis in Rainforest Stream Frog Assemblages of Tropical Queensland." Conservation Biology 19, no. 5 (2005): 1449–59. http://dx.doi.org/10.1111/j.1523-1739.2005.004403.x.

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16

Bagley, Justin, Michael Hickerson, and Jerald Johnson. "Testing Hypotheses of Diversification in Panamanian Frogs and Freshwater Fishes Using Hierarchical Approximate Bayesian Computation with Model Averaging." Diversity 10, no. 4 (2018): 120. http://dx.doi.org/10.3390/d10040120.

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Most Neotropical frog and freshwater fish species sampled to date show phylogeographic breaks along the Pacific coast of the Isthmus of Panama, with lineages in Costa Rica and western Panama isolated from central Panama. We examine temporal patterns of diversification of taxa across this ‘western Panama isthmus’ (WPI) break to test hypotheses about the origin of species geographical distributions and genetic structuring in this region. We tested for synchronous diversification of four codistributed frog taxon-pairs and three fish taxon-pairs sharing the WPI break using hierarchical approximate

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17

Menin, Marcelo, Albertina P. Lima, William E. Magnusson, and Fabiano Waldez. "Topographic and edaphic effects on the distribution of terrestrially reproducing anurans in Central Amazonia: mesoscale spatial patterns." Journal of Tropical Ecology 23, no. 5 (2007): 539–47. http://dx.doi.org/10.1017/s0266467407004269.

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Many studies suggest that edaphic variables are major determinants of frog distributions. However, leaf-litter depth and soil characteristics are influenced by distance from streams, so the apparent relationship between edaphic characteristics and species distributions could be an artefact of the dependence of species on free water for reproduction. Therefore, we investigated the effect of edaphic variables on the mesoscale distribution of frog species not dependent on free water for reproduction. We evaluated the effects of soil texture, pH, slope, number of trees and leaf-litter volume on th

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18

Holmes, Iris, Kurt McLaren, and Byron Wilson. "Niche modeling for management-ready information in little-studied, threatened frog species assemblages." Journal for Nature Conservation 28 (November 2015): 26–34. http://dx.doi.org/10.1016/j.jnc.2015.08.005.

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19

Wojdan, Dariusz, Ilona Żeber-Dzikowska, Barbara Gworek, Maciej Sadowski, and Jarosław Chmielewski. "Herpetofauna of the Pieprzowe Mountains Nature Reserve and adjacent areas." Environmental Protection and Natural Resources 30, no. 2 (2019): 24–31. http://dx.doi.org/10.2478/oszn-2019-0007.

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Abstract The study was focused on determining the sites of amphibian and reptile occurrence in the Pieprzowe Mountains Nature Reserve (area 18.01 ha) and adjacent areas (total area 58.81 ha). The investigations also involved the biology of breeding in the selected species, as well as determining threats and protection measures. Situated in the eastern part of the Świętokrzyskie Voivodeship, the steppe-like Pieprzowe (Pepper) Mountains Nature Reserve was established in 1979. Its aim is to protect xerothermic assemblages inhabited by many species of rare plants including the largest European agg

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20

Matthews, T., and G. J. Measey. "Palaeoenvironmental and evolutionary implications of fossil frog assemblages from the South African west and south coasts." Quaternary International 404 (June 2016): 210. http://dx.doi.org/10.1016/j.quaint.2015.08.207.

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21

Kpan, Tokouaho Flora, Raffael Ernst, and Mark-Oliver Rödel. "Follow the forest: Slow resilience of West African rainforest frog assemblages after selective logging." Forest Ecology and Management 497 (October 2021): 119489. http://dx.doi.org/10.1016/j.foreco.2021.119489.

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22

de Oliveira, Francisco Fonseca Ribeiro, and Paula Cabral Eterovick. "The role of river longitudinal gradients, local and regional attributes in shaping frog assemblages." Acta Oecologica 35, no. 5 (2009): 727–38. http://dx.doi.org/10.1016/j.actao.2009.07.004.

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23

Kopp, Katia, and Paula C. Eterovick. "Factors influencing spatial and temporal structure of frog assemblages at ponds in southeastern Brazil." Journal of Natural History 40, no. 29-31 (2006): 1813–30. http://dx.doi.org/10.1080/00222930601017403.

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24

Ganança, Pedro Henrique Salomão, Alfredo P. Santos, Ricardo A. Kawashita‐Ribeiro, et al. "Habitats determining local frog assemblages within aquatic macrophyte meadows in Amazonia, through species traits filtering." Austral Ecology 46, no. 4 (2021): 574–87. http://dx.doi.org/10.1111/aec.13013.

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25

Almeida‐Gomes, Mauricio, Nicholas J. Gotelli, Carlos Frederico Duarte Rocha, Marcus Vinícius Vieira, and Jayme Augusto Prevedello. "Random placement models explain species richness and dissimilarity of frog assemblages within Atlantic Forest fragments." Journal of Animal Ecology 91, no. 3 (2022): 618–29. http://dx.doi.org/10.1111/1365-2656.13660.

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26

Parris, Kirsten M. "Environmental and spatial variables influence the composition of frog assemblages in sub-tropical eastern Australia." Ecography 27, no. 3 (2004): 392–400. http://dx.doi.org/10.1111/j.0906-7590.2004.03711.x.

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27

Costa-Campos, Carlos Eduardo, and Eliza Maria Xavier Freire. "Richness and composition of anuran assemblages from an Amazonian savanna." ZooKeys 843 (May 9, 2019): 149–69. http://dx.doi.org/10.3897/zookeys.843.33365.

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The Amazonian savannas occupy approximately 150,000 km2 of the Brazilian Amazon, occurring in scattered isolated patches over large areas of forest in the states of Amapá, Amazonas, Pará, Roraima and Rondônia. Despite having considerable variation in the Anuran composition between locations and between the savanna’s physiognomies, a systematic and geographically wide sampling has not been performed for the savanna from Amapá yet, located in the north of Brazil, eastern Amazonia. In this perspective, a study was conducted on the richness, composition, diversity, and abundance of Anuran species

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28

Matthews, Thalassa, Rachel Keeffe, and David C. Blackburn. "An identification guide to fossil frog assemblages of southern Africa based on ilia of extant taxa." Zoologischer Anzeiger 283 (November 2019): 46–57. http://dx.doi.org/10.1016/j.jcz.2019.08.005.

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29

Schmidt, Katrin, Stephen Richards, Richard G. Pearson, Ross A. Alford, and Robert Puschendorf. "Seasonal, annual and decadal change in tadpole populations in tropical Australian streams." Amphibia-Reptilia 40, no. 4 (2019): 447–59. http://dx.doi.org/10.1163/15685381-20191168.

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Abstract Declines due to fungal disease (chytridiomycosis) have affected many stream-dwelling frog species, especially in the tropics, leading to reduced abundance and diversity of their tadpoles. Studies in the Australian Wet Tropics have demonstrated that some frog species have declined or disappeared, while others have persisted. To assess the occurrence of stream-breeding frogs, we monitored tadpole populations of five frog species in Wet Tropics streams in the early 1990s (uplands, before chytridomycosis emergence), and in 2011-2013 (uplands and lowlands, after chytridiomycosis emergence)

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30

Dinnis, Rob, and Damien Flas. "Trou du Renard and the Belgian Aurignacian." Proceedings of the Prehistoric Society 82 (May 13, 2016): 1–25. http://dx.doi.org/10.1017/ppr.2016.4.

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A wealth of cave sites makes southern Belgium the most important area for understanding the north-western European Early Upper Palaeolithic. However, despite their abundance, the interpretation of many assemblages remains problematic. Here we present a new study of lithic material from layer B of Trou du Renard (Furfooz, Namur Province) and consider its place in the Belgian Aurignacian. The assemblage is typical of Late Aurignacian assemblages found across western Europe, underscoring the contrast between the Aurignacian and the periods that pre- and post-date it, when we instead see profound

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31

Moen, Daniel S., Duncan J. Irschick, and John J. Wiens. "Evolutionary conservatism and convergence both lead to striking similarity in ecology, morphology and performance across continents in frogs." Proceedings of the Royal Society B: Biological Sciences 280, no. 1773 (2013): 20132156. http://dx.doi.org/10.1098/rspb.2013.2156.

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Many clades contain ecologically and phenotypically similar species across continents, yet the processes generating this similarity are largely unstudied, leaving fundamental questions unanswered. Is similarity in morphology and performance across assemblages caused by evolutionary convergence or by biogeographic dispersal of evolutionarily conserved ecotypes? Does convergence to new ecological conditions erase evidence of past adaptation? Here, we analyse ecology, morphology and performance in frog assemblages from three continents (Asia, Australia and South America), assessing the importance

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32

Li, Ben, Wei Zhang, Zhenghuan Wang, et al. "Effects of landscape heterogeneity and breeding habitat diversity on rice frog abundance and body condition in agricultural landscapes of Yangtze River Delta, China." Current Zoology 66, no. 6 (2020): 615–23. http://dx.doi.org/10.1093/cz/zoaa025.

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Abstract Amphibians play a key role in structuring biological assemblages of agricultural landscapes, but they are threatened by global agricultural intensification. Landscape structure is an important variable influencing biodiversity in agricultural landscapes. However, in the Yangtze River Delta, where a "farmland-orchard-fishpond" agricultural pattern is common, the effects of landscape construction on anuran populations are unclear. In this study, we examined the effects of agricultural landscape parameters on the abundance and body condition of the rice frog (Fejervarya multistriata), wh

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33

LANE, ALAN, and SHELLEY BURGIN. "Comparison of frog assemblages between urban and non-urban habitats in the upper Blue Mountains of Australia." Freshwater Biology 53, no. 12 (2008): 2484–93. http://dx.doi.org/10.1111/j.1365-2427.2008.02068.x.

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34

Riemann, Jana C., Serge H. Ndriantsoa, Mark-Oliver Rödel, and Julian Glos. "Functional diversity in a fragmented landscape — Habitat alterations affect functional trait composition of frog assemblages in Madagascar." Global Ecology and Conservation 10 (April 2017): 173–83. http://dx.doi.org/10.1016/j.gecco.2017.03.005.

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35

Caldwell, Janalee P. "Brazil nut fruit capsules as phytotelmata: interactions among anuran and insect larvae." Canadian Journal of Zoology 71, no. 6 (1993): 1193–201. http://dx.doi.org/10.1139/z93-163.

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Under experimental conditions, body size, and thus indirectly priority effects, determines the outcome of predator–prey interactions among the aquatic larvae of a small assemblage of anuran and insect species using a patchily distributed microcosm. This assemblage occurs naturally in fallen fruit capsules of the Brazil nut tree, Bertholletia excelsa (family Lecythidaceae), in lowland tropical forest in Amazonian Brazil. Three of the species (the tadpole of a poison frog and the larvae of a giant damselfly and a culicid mosquito) are predators in the system and form a guild in which all are cap

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36

Ito, Yoichi, Yuko Iijima, Naoyuki Itoh, and Yuya Kimura. "Multilocus genotyping of Giardia duodenalis isolates from breeding cattery cats in Japan." Journal of Feline Medicine and Surgery Open Reports 3, no. 2 (2017): 205511691774523. http://dx.doi.org/10.1177/2055116917745237.

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Objectives The present study reports the multilocus genotyping of Giardia duodenalis isolates from cats maintained in breeding catteries in Japan and discusses their potential for zoonotic transmission. Methods A total of 41 faecal samples positive for Giardia-specific antigen were procured from cats maintained in five breeding catteries and subjected to PCR to amplify four gene loci, namely small subunit ribosomal RNA ( SSU rRNA), glutamate dehydrogenase ( gdh), beta-giardin ( bg) and triose phosphate isomerase ( tpi ). The PCR-amplified DNA fragments were sequenced to determine the G duodena

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37

Torralvo, Kelly, Rafael Fraga, Albertina P. Lima, Jussara Dayrell, and William E. Magnusson. "Environmental filtering and deforestation shape frog assemblages in Amazonia: An empirical approach assessing species abundances and functional traits." Biotropica 54, no. 1 (2021): 226–38. http://dx.doi.org/10.1111/btp.13053.

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38

Pabis, Krzysztof, and Magdalena Błażewicz-paszkowycz. "Distribution and diversity of cumacean assemblages in Admiralty Bay, King George Island." Polish Polar Research 32, no. 4 (2011): 341–54. http://dx.doi.org/10.2478/v10183-011-0024-6.

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Distribution and diversity of cumacean assemblages in Admiralty Bay, King George IslandEleven species of cumaceans were found in 105 samples collected in Admiralty Bay (King George Island) in the summers of 1984/85 and 1985/86, from 20 to 500 m depth range. Four cumacean assemblages were distinguished using the multivariate analysis. They were characterized by the dominance of one or two species often with low density values. Two assemblages were found in open waters of Admiralty Bay. The first inhabited on sandy-clay-silt and silty-clay-sand bottom deposits in the depth range from 140 to 330

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39

Badenhorst, Shaw, Nomaswazi Mthombothi, Niekerk Karen L. Van, and Christopher S. Henshilwood. "An initial assessment of zooarchaeological assemblage sizes from South Africa." Revue de Paléobiologie 41, no. 1 (2022): 1–10. https://doi.org/10.5281/zenodo.6022753.

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Large faunal assemblages remain a concern in zooarchaeology. Without sufficiently large assemblages, interpretations about the past are less secure. The number of potential taxa in an assemblage is related to various factors such as the number of species found in an ecological zone, economic activities (hunting vs. farming) and taphonomy. In South Africa, no attempt has been made to determine what constitutes a sufficiently representative assemblage size, yet animal remains are frequently utilised to infer aspects of human behaviour during the past. We use faunal assemblages analysed using a s

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40

Bradford, David F., Scott D. Cooper, Thomas M. Jenkins, Jr., Kim Kratz, Orlando Sarnelle, and Aaron D. Brown. "Influences of natural acidity and introduced fish on faunal assemblages in California alpine lakes." Canadian Journal of Fisheries and Aquatic Sciences 55, no. 11 (1998): 2478–91. http://dx.doi.org/10.1139/f98-128.

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In an alpine area of the Sierra Nevada of California, naturally acidic waters and introduced fishes both strongly affect the distributions of native amphibians, zooplankton, and macroinvertebrates. The study area in Kings Canyon National Park contains 104 lakes with pH values between 5.0 and 9.3, including 10 lakes with pH < 6.0 (defined here as acidic lakes) and 18 lakes with introduced trout. We surveyed 33 of these lakes (8 acidic, 7 non-acidic with trout, 18 non-acidic without trout) for water chemistry and faunal assemblages. Yellow-legged frog tadpoles (Rana muscosa), common microcrus

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41

Huazhang, Pan. "Namurian (Lower Carboniferous) gastropod assemblages from Ningxia, China." Journal of Paleontology 71, no. 4 (1997): 599–609. http://dx.doi.org/10.1017/s0022336000040087.

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The Namurian Tsingyuan Formation from Ningxia, China, is divided into three members. The remarkably well-preserved gastropods from the Tsingyuan Formation belong to three assemblages: the Angyomphalus longicostatus—Glabrocingulum tongxinensis assemblage from the Lower Member; an assemblage of some siliceous Bellerophon sp., and Naticopsis sp. from the Middle Member; and the Euphemites hindi—Turbonitella semisulcatus assemblage from the Upper Member. Based on the associated ammonoids and conodonts, these assemblages are considered equivalent to the Eumorphoceras, Homoceras2-Reticuloceras1 and R

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Rao, M. R., and C. P. Rajendran. "Palynological investigations of tertiary lignite and associated sediments from Cannanore, Kerala Basin, India." Journal of Palaeosciences 43, no. 1-3 (1994): 63–82. http://dx.doi.org/10.54991/jop.1994.1177.

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The palynofloral recovered from the Tertiary lignite and associated sediments exposed along Cannanore and adjoining area of Kerala Basin consists of 50 genera and 73 species. Of these, 13 genera and 20 species are represented by pteridophytic spores and 36 genera and 52 species to angiospermous pollen. Ten species have been proposed as new. Some significant constituents of the assemblage are- Lygodiumsporites, Dictyophyllidites, Crassoretitriletes, Intrapunctisporis, Cheilanthoidspora, polypodiisporites, Retimonosulcites, Quilonipollenites, Lakiapollis, Tricolpites, Gemmatricolpites, Tricolpor

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Lee, Sangmin, Duck K. Choi, and G. R. Shi. "Pennsylvanian brachiopods from the Geumcheon-Jangseong Formation, Pyeongan Supergroup, Taebaeksan Basin, Korea." Journal of Paleontology 84, no. 3 (2010): 417–43. http://dx.doi.org/10.1666/09-105.1.

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We provide the first detailed systematic taxonomy and paleoecological investigation of late Paleozoic brachiopod faunas from Korea. Specifically, we focus on the brachiopods from the Geumcheon-Jangseong Formation, the lower part of the Pyeongan Supergroup in the Taebaeksan Basin. The formation yields a variety of marine invertebrate fossils, including brachiopods, molluscs, echinoderms, corals, fusulinids, and conodonts. Diverse brachiopods are described from six siliciclastic horizons of the formation at three localities, including 23 species belonging to 20 genera with two new species: Rhipi

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BLAIN, HUGUES-ALEXANDRE, and OSCAR J. ARRIBAS. "A description of the skeletal morphology of Rana pyrenaica (Anura: Ranidae), with comments on functional morphology, ecological adaptation and relationships with other Iberian ranids." Zootaxa 4319, no. 3 (2017): 510. http://dx.doi.org/10.11646/zootaxa.4319.3.5.

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Despite being described in 1993, the skeleton of Rana pyrenaica Serra-Cobo, 1993 has never been investigated. The present publication thus represents the first description of the osteology of the spring-dwelling Pyrenean small brown frog. Its specific status is osteologically supported by some discrete differences. When compared with other Iberian brown frogs, it shows a mosaic of characters that are difficult to interpret. However, according to ecomorphology, R. pyrenaica shares a robust skeleton morphology and various morphological traits with the more terrestrial Rana temporaria (Linnaeus,

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Brinkman, Donald B., and John A. Tarduno. "A Late Cretaceous (TuronianConiacian) high-latitude turtle assemblage from the Canadian Arctic." Canadian Journal of Earth Sciences 42, no. 12 (2005): 2073–80. http://dx.doi.org/10.1139/e05-074.

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Three turtles are present in a TuronianConiacian age high-latitude vertebrate assemblage from Axel Heiberg Island: Borealochelys axelheibergensis gen. et sp. nov., a generically indeterminate eucryptodire, and a trionychid. The assemblage differs from most Late Cretaceous turtle assemblages from North America in that members of the Paracryptodira are absent. The absence of this group is interpreted as a result of latitudinal differentiation of turtle assemblages in North America during the Late Cretaceous. The level of diversity of turtles in the Axel Heiberg assemblage is comparable to that

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Prates, Ivan, Andrea Paz, Jason L. Brown, and Ana C. Carnaval. "Links between prey assemblages and poison frog toxins: A landscape ecology approach to assess how biotic interactions affect species phenotypes." Ecology and Evolution 9, no. 24 (2019): 14317–29. http://dx.doi.org/10.1002/ece3.5867.

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Mohammad Rahimi, Hanieh, Ehsan Javanmard, Ali Taghipour, Ali Haghighi, and Hamed Mirjalali. "Multigene typing of Giardia Duodenalis isolated from tuberculosis and non-tuberculosis subjects." PLOS ONE 18, no. 3 (2023): e0283515. http://dx.doi.org/10.1371/journal.pone.0283515.

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Giardia duodenalis is a cryptic protozoan, which has eight assemblages (A-H). Assemblages A and B are the main genotypes reported from humans with probable anthroponotic and zoonotic transmission. The current study aimed to characterize G. duodenalis assemblages in tuberculosis (TB) patients and healthy subjects using multilocus genotyping (MLG). Thirty Giardia-positive stool samples, which were obtained from TB patients and healthy subjects were included in the study. After total DNA extraction, three β-giardin (bg), triosephosphate isomerase (tpi), glutamate dehydrogenase (gdh) genes were am

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Scheffers, Brett R., Ben L. Phillips, William F. Laurance, Navjot S. Sodhi, Arvin Diesmos, and Stephen E. Williams. "Increasing arboreality with altitude: a novel biogeographic dimension." Proceedings of the Royal Society B: Biological Sciences 280, no. 1770 (2013): 20131581. http://dx.doi.org/10.1098/rspb.2013.1581.

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Biodiversity is spatially organized by climatic gradients across elevation and latitude. But do other gradients exist that might drive biogeographic patterns? Here, we show that rainforest's vertical strata provide climatic gradients much steeper than those offered by elevation and latitude, and biodiversity of arboreal species is organized along this gradient. In Philippine and Singaporean rainforests, we demonstrate that rainforest frogs tend to shift up in the rainforest strata as altitude increases. Moreover, a Philippine-wide dataset of frog distributions shows that frog assemblages becom

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Wiebler, James M., Kevin D. Kohl, Richard E. Lee, and Jon P. Costanzo. "Urea hydrolysis by gut bacteria in a hibernating frog: evidence for urea-nitrogen recycling in Amphibia." Proceedings of the Royal Society B: Biological Sciences 285, no. 1878 (2018): 20180241. http://dx.doi.org/10.1098/rspb.2018.0241.

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Gut bacteria that produce urease, the enzyme hydrolysing urea, contribute to nitrogen balance in diverse vertebrates, although the presence of this system of urea-nitrogen recycling in Amphibia is as yet unknown. Our studies of the wood frog ( Rana sylvatica ), a terrestrial species that accrues urea in winter, documented robust urease activity by enteric symbionts and hence potential to recoup nitrogen from the urea it produces. Ureolytic capacity in hibernating (non-feeding) frogs, whose guts hosted an approximately 33% smaller bacterial population, exceeded that of active (feeding) frogs, p

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JAROS, DOROTA, WOJCIECH ZYGNER, SŁAWOMIR JAROS, and HALINA WĘDRYCHOWICZ. "Detection of Giardia intestinalis Assemblages A, B and D in Domestic Cats from Warsaw, Poland." Polish Journal of Microbiology 60, no. 3 (2011): 259–63. http://dx.doi.org/10.33073/pjm-2011-036.

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Giardia intestinalis is a complex species divided into 7 assemblages (A - G). Two of them (A and B) are infective for both humans and animals. In cats four assemblages can occur: A, B, D, and F Assemblages A and B infect either cats, dogs and humans, assemblage D infects cats and dogs and assemblage F only cats. The purpose of this study was to determine the prevalence and genotypes of G. intestinalis in cats from Warsaw. From November 2006 to March 2007 a hundred sixty samples of stool were collected and examined by light microscopy. G. intestinalis cysts were detected in 3.75% of samples. DN

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