Marine Pollution Bulletin, Journal Year: 2024, Volume and Issue: 209, P. 117129 - 117129
Published: Oct. 20, 2024
Language: Английский
Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)
Published: June 8, 2023
Abstract Aquaculture of New Zealand’s endemic green-lipped mussel ( Perna canaliculus ) is an industry valued at NZ$ 336 M per annum and ~ 80% reliant on the natural supply wild spat harvested a single location—Te Oneroa-a-Tōhē—Ninety Mile Beach (NMB)—in northern Zealand. Despite economic ecological importance this supply, little known about population connectivity mussels in region or location source population(s). In study, we used biophysical model to simulate two-stage dispersal process P. . A combination backward forward tracking experiments was identify primary settlement areas putative populations. The then estimate local connectivity, revealing two geographic regions Zealand, with limited larval exchange between them. Although secondary can double distance, our simulations show that collected NMB originate from neighbouring beds, large contributions beds located Ahipara (southern end NMB). These results provide information may be help monitor protect these important populations ensure ongoing success Zealand aquaculture industry.
Language: Английский
Citations
10
Ecological Modelling, Journal Year: 2025, Volume and Issue: 501, P. 110999 - 110999
Published: Jan. 20, 2025
Language: Английский
Citations
0
Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(1)
Published: Jan. 1, 2025
ABSTRACT Many sharks, rays and skates are highly threatened vulnerable to overexploitation, as such reliable monitoring of elasmobranchs is key effective management conservation. The mobile elusive nature these species makes challenging, particularly in temperate waters with low visibility. Environmental DNA (eDNA) methods present an opportunity study the absence visual identification or invasive techniques. However, eDNA data alone can be difficult interpret for monitoring, a marine setting where its distribution influenced by water currents. In this study, we investigated spatial temporal elasmobranch two Special Areas Conservation (SAC) off coast Wales. We took monthly samples 1 year (starting September 2020 March 2022 northern southern SACs, respectively), used metabarcoding reveal presence species. combined hydrodynamic modelling particle tracking simulate potential origins detected eDNA. 11 species, including critically endangered angelshark ( Squatina squatina ) tope Galeorhinus galeus ). Most detections were spring fewest autumn. simulations predicted that was shed, on average, approximately 7 km 15 (in respectively) from sampling stations at which it detected. These results show SACs represent important areas United Kingdom demonstrate new frontier
Language: Английский
Citations
0
Frontiers in Marine Science, Journal Year: 2025, Volume and Issue: 11
Published: Feb. 6, 2025
Lagrangian dispersal models are valuable tools for understanding the transport mechanisms and distribution of larvae in space time. These primarily use high-quality physical oceanographic data from hydrodynamic ocean to simulate advection connecting pathways larvae. The paper seeks achieve following objectives 1) establish patterns larval anchovies sardines spawned South Africa’s coastal marine protected areas (i.e., inshore 200 m isobath), 2) assess impact model resolution on by comparing outputs a 3-km-grid regional community model, 8-km-grid global physics reanalysis product. We demonstrate that yields more structured than sporadic obtained reanalysis. shows relatively shorter residence times < 5 days) confined area Agulhas Current. high variability dispersals observed off west coast is attributable significant differences mean kinetic energy between This finding directly impacts potential connectivity along coastlines: overestimated local retention subsequent recruitment variability. Our findings indicate grid size 3 km or smaller may be appropriate studying African zone. add growing knowledge importance including sub-mesoscale processes analysis studies species.
Language: Английский
Citations
0
Earth system science data, Journal Year: 2024, Volume and Issue: 16(1), P. 667 - 679
Published: Jan. 26, 2024
Abstract. Between 2019 and 2020, the Gambier lagoon was instrumented over a period of 9 months with large array autonomous oceanographic instruments measuring temperature, pressure, current. Two deployments were conducted from June to October (Leg1) late February 2020 (Leg2). A total 16 locations spread across on forereef. Physical parameters measured characterize wave climate, tide surges, lagoonal circulation, spatial vertical temperature variabilities. Those observations part ANR-funded MANA project (2017–2022) its derivatives that aimed at improving knowledge processes influencing spat collection Pinctada margaritifera oysters are used for black pearl farming production. This dataset prerequisite development high-resolution biophysical model is understanding connectivity oyster larvae (Bruyère et al., 2023a). The sampling strategy focused northern region especially sub-lagoon Rikitea, which prime site. post processed, quality controlled, archived in dedicated repository permanent DOI via SEANOE marine data platform (https://doi.org/10.17882/94148, Andréfouët 2023b).
Language: Английский
Citations
3
Marine Pollution Bulletin, Journal Year: 2023, Volume and Issue: 192, P. 115059 - 115059
Published: May 18, 2023
Language: Английский
Citations
8
Global Ecology and Biogeography, Journal Year: 2024, Volume and Issue: 33(8)
Published: May 18, 2024
Abstract Aim Genetic diversity of marine forests results from complex interactions eco‐evolutionary processes. Among them, oceanographic connectivity driven by dispersal through water transport is hypothesized to play a pivotal role, yet its relative contribution has not been addressed at the global scale. Here, we test how present‐day correlated with distribution genetic across ocean. Location Global. Time period Contemporary. Major taxa studied Marine brown macroalgae (order: Fucales, Ishigeales, Laminariales and Tilopteridales). Methods Through literature review, compiled comprehensive dataset differentiation, encompassing 699 populations 30 species. A biophysical model coupled network analyses estimated multigenerational centrality forest distribution. This approach integrated propagule dispersive capacity long‐distance events. Linear mixed models tested site‐specific processes, in explaining differentiation. Results We show that spatiality‐dependent as described our models, are prominent drivers differentiation (significant 91.43% cases an average R 2 0.50 ± 0.07). Specifically, reveal 18.7% variance explicitly induced predicted contemporary centrality. Moreover, demonstrate key connecting species distributed large masses continents. Main conclusions Our findings highlight role shaping extant on scale, significant implications for biogeography evolution. understanding can pave way future research aimed guiding conservation efforts, including designation well‐connected protected areas, which particularly relevant sessile ecosystems structuring such macroalgae.
Language: Английский
Citations
2
Fisheries Research, Journal Year: 2023, Volume and Issue: 270, P. 106884 - 106884
Published: Oct. 21, 2023
Marine fish species that form spawning aggregations are often vulnerable to exploitation, such as the European bass (Dicentrarchus labrax). Information on is not well resolved temporally and spatially. Otolith daily growth increment (DGI) counts were conducted 0-group collected in July-August 2014 & 2019 from seven settlement estuaries Irish Celtic seas, estimate timing of spawning. These timings parameterised three-dimensional hydrodynamic Lagrangian particle tracking models, run reverse, identify probable locations. Estimated occurred between April-May (inshore offshore) < 200 km each area. At least two broad areas predicted: central Sea led post-larval recruitment north Wales northwest England, southern Sea/Celtic south Wales. Results indicate current seasonal closure for northern stock may protect events drive into sites England. Surface temperatures wind- tide-driven surface currents determined connectivity sites. Atmospheric drivers expected change future management needs account potential regional shifts times
Language: Английский
Citations
4
Frontiers in Marine Science, Journal Year: 2024, Volume and Issue: 10
Published: Jan. 3, 2024
Marine species with a pelagic larval phase have the potential to disperse hundreds of kilometres via ocean currents, thus connecting geographically distinct populations. Connectivity between populations therefore plays central role in population dynamics, genetic diversity and resilience exploitation or decline can be an important vector management fisheries. The scallop, Pecten maximus , is valuable benthic bivalve variety measures at both regional national scales. A bio-physical numerical model was developed simulate characterise transport connectivity scallops across commercial fishing grounds within Irish Celtic Seas. incorporated realistic oceanographic currents known behavioural traits P. larvae including spawning times, duration, vertical migration during various developmental stages i.e., passive, active swimming, migrations, since growth rates change temperature, which varies spatially temporally, it used determine when individual larva changed its behaviour. Simulations showed high degree most populations, multiple connections allowing for substantial exchanges larvae. exception off North Cornwall that entirely reliant on self-recruitment. sensitivity analysis biological parameters suggested current patterns primarily controlled network, but strength sensitive date specific features diel migrations. identified weakly connected could vulnerable overfishing, are ‘strong connectors’ vital source maintain metapopulation. Our approach highlights benefits characterising as part effective strategy sustainable
Language: Английский
Citations
1
Frontiers in Marine Science, Journal Year: 2024, Volume and Issue: 10
Published: Jan. 24, 2024
Introduction Patterns of larval dispersal in the marine environment have many implications for population dynamics, biodiversity, fisheries, ecosystem function, and effectiveness protected areas. There is tremendous variation factors that influence direction success dispersal, making accurate prediction exceedingly difficult. The key physical factor pattern water movement, while two biological are amount time larvae spend drifting ocean (pelagic duration - PLD) year at which adult populations release larvae. Here, we assess role these predicted settlement patterns from 15 locations around Aotearoa New Zealand. Methods Moana Project Backbone circulation model paired with OpenDrift was used to simulate Lagrangian basic vertical control across four differing PLD groups (7, 14, 30, 70 days) each twelve months. Results Considerable observed particle major variable: location, group, month release. As expected, distances increased length, but size this effect differed both location month. Increased directional matched some expectations well-known currents, surprisingly high self-recruitment levels were recorded locations. Discussion These predictions provide, first time, an empirical overview coastal Aoteaora Zealand’s main islands highlight potential “barriers” dispersal. This dataset should prove valuable helping predict connectivity a broad range species diverse purposes.
Language: Английский
Citations
1