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Article Reference Biodiversity of non-marine ostracods (Crustacea, Ostracoda) in the alluvial valley of the upper Paraná River, Brazil
Located in Library / RBINS Staff Publications
Article Reference Biodiversity of ostracod communities (Crustacea, Ostracoda) in a tropical floodplain
Neotropical floodplains harbour both floating and rooted plants and are associated with rich ostracod communities. After dry seasons, flooding causes recruitment in 2 ways: floods bring in allochthonous macrophytes with associated pleuston communities, and these rising water levels rehydrate plants and attached (ostracod) eggs that dried at the onset of the dry season. We analysed the ostracods communities in the Araguaia River floodplain (Brazil) during 2 hydrological periods (dry and rainy) and evaluated the species distribution in relation to abiotic and biotic factors. We compared the ostracod fauna of 6 lakes in the dry and rainy period and 17 lakes in the rainy period. We tested the hypothesis that the highest values of ostracod community attributes (richness, density, and evenness) occur in the rainy season owing to the influx of allochthonous individuals and the rehydration of the dried autochthonous macrophytes. We indeed observed the highest richness and diversity of ostracods in the rainy season; the homogenizing effect of the flood pulse at the onset of the rainy season caused a more homogeneous fauna (lower beta diversity) during that hydrological period. The distribution of species showed a significant effect of both abiotic factors (local) and hydrological period (regional).
Located in Library / RBINS Staff Publications 2017
Book Reference Biodiversity, Biogeography and Nature Conservation in Wallacea and New Guinea. Volume IV
Located in Library / RBINS Staff Publications 2021
Article Reference Biofluorescence in Morelia, Malayopython and Python: first reports for the Pythonidae
Ultraviolet (UV) induced biofluorescence in snakes has been underexplored compared to lizards. This study reports for the first time UV fluorescence in several Pythonidae species, including Morelia viridis, Malayopython reticulatus, and Python regius. Specimens were examined under both white and UV light, revealing that UV fluorescence in these snakes is likely skin-based, induced by chemical compounds rather than bone-based as seen in other reptiles. Notably, Morelia viridis and M. azurea exhibited a golden mustard yellow fluorescence, while Malayopython reticulatus displayed a complex pattern with intense yellow fluorescence. The study also found that UV fluorescence is absent in ethanol-preserved specimens, suggesting the degradation of fluorescent compounds during preservation. These findings contribute to the understanding of UV fluorescence in snakes and highlight the need for further research on its functional significance and the specific molecules involved.
Located in Library / RBINS Staff Publications 2024
Article Reference Biofluorescence of the Crocodile Skinks, genus Tribolonotus: first report in Scincidae
Biofluorescence, the phenomenon where organisms absorb short wavelengths of light and re-emit longer wavelengths, has been documented in various reptile and amphibian groups. This study reports the first observation of UV-induced biofluorescence in the genus Tribolonotus (crocodile skinks), marking the first such report for the family Scincidae. Specimens of Tribolonotus novaeguineae, T. brongersmai, and T. gracilis were examined under UV light, revealing distinct fluorescence patterns. The fluorescence is primarily bone-induced, linked to the presence of osteoderms, although some skin-based fluorescence was also observed, particularly around the eyes. The study suggests potential ecological roles for this fluorescence, such as intraspecific signaling or predator-prey interactions, and highlights the need for further research to understand the functional significance of biofluorescence in these skinks.
Located in Library / RBINS Staff Publications 2024
Article Reference BIOFRAG - a new database for analysing BIOdiversity responses to forest FRAGmentation.
Habitat fragmentation studies have produced complex results that are challenging to synthesize. Inconsistencies among studies may result from variation in the choice of landscape metrics and response variables, which is often compounded by a lack of key statistical or methodological information. Collating primary datasets on biodiversity responses to fragmentation in a consistent and flexible database permits simple data retrieval for subsequent analyses. We present a relational database that links such field data to taxonomic nomenclature, spatial and temporal plot attributes, and environmental characteristics. Field assessments include measurements of the response(s) (e.g., presence, abundance, ground cover) of one or more species linked to plots in fragments within a partially forested landscape. The database currently holds 9830 unique species recorded in plots of 58 unique landscapes in six of eight realms: mammals 315, birds 1286, herptiles 460, insects 4521, spiders 204, other arthropods 85, gastropods 70, annelids 8, platyhelminthes 4, Onychophora 2, vascular plants 2112, nonvascular plants and lichens 320, and fungi 449. Three landscapes were sampled as long-term time series (>10 years). Seven hundred and eleven species are found in two or more landscapes. Consolidating the substantial amount of primary data available on biodiversity responses to fragmentation in the context of land-use change and natural disturbances is an essential part of understanding the effects of increasing anthropogenic pressures on land. The consistent format of this database facilitates testing of generalizations concerning biologic responses to fragmentation across diverse systems and taxa. It also allows the re-examination of existing datasets with alternative landscape metrics and robust statistical methods, for example, helping to address pseudo-replication problems. The database can thus help researchers in producing broad syntheses of the effects of land use. The database is dynamic and inclusive, and contributions from individual and large-scale data-collection efforts are welcome.
Located in Library / RBINS Staff Publications
Book Reference Biogeographic atlas of the Southern Ocean
Located in Library / RBINS Staff Publications
Incollection Reference Biogeographic patterns of Southern Ocean benthic Amphipods
Located in Library / RBINS Staff Publications
Article Reference Biogeography and community structure of abyssal scavenging Amphipoda (Crustacea) in the Pacific Ocean
Located in Library / RBINS Staff Publications 2020
Article Reference Biogeography and phylogeography of non-marine Ostracoda (Crustacea). Crustacean conference
Located in Library / RBINS Staff Publications