Spatiotemporal Distribution and Dispersal Pattern of Early Life Stages of the Small Yellow Croaker (Larimichthys Polyactis) in the Southern Yellow Sea

Diversity, Journal Year: 2024, Volume and Issue: 16(9), P. 521 - 521

Published: Aug. 31, 2024

Nursery habitats play a significant role in completing fish life cycles, and they are now recognized as essential habitats. Monthly variations nursery ground distributions of Larimichthys polyactis were investigated the southern Yellow Sea 2019. Bayesian hierarchical models with integrated nested Laplace approximation utilized to model preferential L. larvae. The study analyzed spatial temporal larvae juveniles based on three environmental variables: sea surface temperature, salinity, depth. Additionally, this examined utilization by different stages ontogenetic shifts. A total 3240 individuals collected from April June, peak occurring May (0.05 ind./m3), distribution areas varied between months. prediction reveals ecological adaptability temperature variations. optimal for density ranges 12.5 °C 16.5 17.5 May, demonstrating broad tolerance survival. In addition, there patterns among developmental stages. spawn inshore nearshore waters, after hatching, pre-flexion stage tend remain aggregated near spawning beds. However, advanced development (post-flexion) move towards sandy ridge along coast start migrate offshore June. This provides valuable insights effective management fishery resources area can be identify marine specific habitat features that require conservation.

Language: Английский

Mapping and assessing marine ecosystem services supply in the Baltic Sea

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 950, P. 175199 - 175199

Published: Aug. 3, 2024

Coastal and marine ecosystems supply multiple Ecosystem Services (ES). Nevertheless, these are among the most impacted by human activities, harming ES sustainable supply. Since a spatial phenomenon, mapping can contribute to understand For this, we use quantitative spatio-temporal frameworks map assess of one provisioning (food from fisheries) two regulating (nursery habitats nutrient regulation), considering periods: Baltic Sea Holistic Assessment (HOLAS) 2 (2011-2016) 3 (2016-2021). The was assessed following process-based modelling approach, using bio-physical indicators as proxies. three models were applied validated, showing moderate results. fisheries nursery results showed significantly higher in HOLAS than 2, for opposite. This indicates that changed due environmental activities. Anselin Local Moran's index values aggregate High-High cluster; I semi-variogram clustered pattern; Getis Ord* analysis hot cold spots corresponded high low areas. fisheries, areas located central-southern part Sea, while low-supply regions northern part. ES, southwestern Finnish western Estonian coasts. occurred central- eastern-southern parts close coast. Correlations statistically significant negative correlation between positive ES. No correlations observed obtained essential support coastal management planning well international policies directives.

Language: Английский

Exploring the extensive movements and home range of one of North America’s most mobile fish: the freshwater drum (Aplodinotus grunniens)

Environmental Biology of Fishes, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 22, 2024

Abstract Freshwater drum Aplodinotus grunniens are a unique and ubiquitous freshwater species of the family Sciaenidae. Despite species’ wide distribution biogeography, life history, behavior, surprisingly little is known about movement ecology. In this study, we use passive acoustic telemetry tags broad-scale gridded receiver array to track interannual seasonal tagged in tributaries North South Basins Lake Winnipeg (Manitoba, Canada). First, had lower survival south basin where higher fishing pressure thought be cause mortality. We found that remarkably mobile, with mean monthly rates among highest on record for any fish. spring, fish entered rivers prior spawning. A few weeks later, most individuals moved into lake habitat they made extensive lateral movements. Home range hotspot analysis revealed population-specific patterns occupancy, elevated densities during ice-on period dispersed distributions open water. Both populations remained almost exclusively their respective basins. Homing site fidelity were apparent, nearly all returning original tagging river each successive spawning season. The results bolster existing information ecology may help enhance conservation management strategies, particularly toward addressing commercial bycatch.

Language: Английский