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Author: Hirokazu Urabe ×Clear All Filters
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Upper thermal tolerance differs between populations of a cyprinid fish, Pseudaspius sachalinensisNARA Subscribed
Understanding intraspecific variation in upper thermal tolerance is essential for assessing climate change impacts on freshwater fish communities. We experimentally evaluated thermal tolerance in a cyprinid fish, Pseudaspius sachalinensis , using critical thermal maximum (CT max ) measurements. Fish were collected from two tributaries in Hokkaido, Japan, differing in thermal variability but with similar mean temperatures. The...
Motivation Here, we make available a second version of the BioTIME database, which compiles records of abundance estimates for species in sample events of ecological assemblages through time. The updated version expands version 1.0 of the database by doubling the number of studies and includes substantial additional curation to the taxonomic accuracy of the records, as well as the metadata. Moreover, we now provide an R packag...
Invasion status of hatchery‐origin pink salmon in an unstocked river at the Shiretoko World Natural Heritage Site in northern JapanNARA Subscribed
Hatchery fish and their offspring (including hatchery‐wild hybrids) have lower reproductive success than wild fish. Thus, the straying of hatchery fish may negatively impact wild populations, depending on the number of wild salmon returning and hatchery strays. We investigated the straying status of hatchery‐origin pink salmon ( Oncorhynchus gorbuscha ), which have a higher straying rate than other salmonids, in an unstocked r...
Diel migration pattern of pink salmon fry in small streamsNARA Subscribed
Downstream migration is a critical stage in the anadromous salmonid life cycle, but previous studies have shown different results between rivers or surveys for the diel downstream migration pattern of the fry of the pink salmon Oncorhynchus gorbuscha . We investigated the diel migration pattern of pink salmon fry in three small streams. Our results showed that pink salmon fry migrate mainly within a few hours after sunset; 89....
RivFishTIME: A global database of fish time‐series to study global change ecology in riverine systemsNARA Subscribed
Motivation We compiled a global database of long‐term riverine fish surveys from 46 regional and national monitoring programmes and from individual academic research efforts, with which numerous basic and applied questions in ecology and global change research can be explored. Such spatially and temporally extensive datasets have been lacking for freshwater systems in comparison to terrestrial ones. Main types of variables con...
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