Fish and macroinvertebrates respond differently to seasonal drying in tropical non‐perennial streams

Austral Ecology, Год журнала: 2024, Номер 49(7)

Опубликована: Июль 1, 2024

Abstract Surface water drying challenges the persistence of lotic biological assemblages in non‐perennial streams and rivers. However, effects natural hydrological disturbances on an assemblage depend individual species characteristics. In this study, we investigated structure association fish macroinvertebrate during two phases (flowing vs. disconnected pools). We sampled five stream reaches located Caatinga (Brazilian semi‐arid region). Fish were resistant to dynamics streams. On other hand, some taxa from flowing phase disappeared, new colonized pools. The absence insects following flow cessation colonization pools by lentic facilitated these dynamic Our study showed that respond differently same cessation, which leads us predict changes will yield different assemblages, depending . Thus, it is crucial consider multi‐assemblage responses effectively manage conserve ecosystems a tropical region.

Язык: Английский

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Assessing fish taxonomic and functional β diversity to inform effective conservation strategies in a large reservoir of the Yangtze River Basin

Water Biology and Security, Год журнала: 2025, Номер unknown, С. 100407 - 100407

Опубликована: Апрель 1, 2025

Язык: Английский

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Dispersal and Kinship Patterns of a Pelagic‐Spawning Riverine Fish Highlight the Value of Connectivity Over Large Spatial Scales

Ecohydrology, Год журнала: 2025, Номер 18(3)

Опубликована: Апрель 1, 2025

ABSTRACT Managing fish populations in regulated rivers requires an understanding of the spatial and temporal scale their dispersal, locations key spawning nursery habitats hydraulic processes that interplay with life history. Golden perch ( Macquaria ambigua ), Australian freshwater pelagic‐spawning fish, highlights worldwide challenges managing riverine species rely on conditions to sustain critical metapopulation processes. This study aimed quantify early history golden dispersal after a drought‐breaking in‐channel flow event 2020 lowland river. Otolith microchemistry 87 Sr/ 86 Sr) single nucleotide polymorphisms (SNPs) determined natal origins sibling relationships, respectively, young‐of‐year (YOY) caught floodplain larval captured upstream. For collected nursery, distances ranged ~1600 km. attributed 52% YOY as localised origin, 44% originating midcatchment 4% from most upstream sample locations. Genetic analyses identified full‐sibling pair 900 km apart 31 half‐sibling pairs linked at diversity sites. Our range scales over which ELH can occur for emphasises importance interconnected flowing river sustaining We illustrate positive results increased connectivity yield similar strategies.

Язык: Английский

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Uncovering patterns and drivers of macroinvertebrate ecological uniqueness for conservation planning in riverine tributaries of Thousand Islands Lake, China

Ecological Indicators, Год журнала: 2024, Номер 167, С. 112652 - 112652

Опубликована: Окт. 1, 2024

Язык: Английский

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