English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

. Understanding the role of ocean currents in the recruitment of commerciallyand ecologically important fish is an important step toward developingsustainable resource management guidelines. To this end, we attempt toelucidate the role of surface ocean transport in supplying recruits ofEuropean sardine (Sardina pilchardus) to the Gulf of Manfredonia, aknown recruitment area in the Adriatic Sea. Sardine early life history stages(ELHSs) were collected during two cruises to provide observational estimatesof their age–size relationship and their passive pelagic larval duration(PPLD). We combine these PPLDs with observations of surface ocean currents totest two hypotheses: (1) ELHSs are transported from remote spawning areas (SAs)by ocean currents to the Gulf of Manfredonia; (2) sardines spawn locally andELHSs are retained by eddies. A historical surface drifter database is used totest hypothesis 1. Hypothesis 2 is tested by estimating residence times inthe Gulf of Manfredonia using surface drifters and virtual particlestrajectories that were computed from high-resolution observations of surfacecurrents measured by a high-frequency (HF) radar network. Transport to theGulf of Manfredonia from remote SAs seems more likely than local spawning andretention given a mismatch between observed PPLDs of 30–50 days andrelatively short ( -day) average residence times. The number andstrength of connections between the gulf and remote SAs exhibit a strongdependence on PPLD. For PPLDs of 20 days or less, the gulf is connected toSAs on the western Adriatic coast through transport in the Western AdriaticCurrent (WAC). SAs on the east coast are more important at longer PPLDs. SAsin the northern and central Adriatic exhibit weak connections at all PPLDranges considered. These results agree with otolith microstructure analysis,suggesting that the arrival of larvae in the gulf is characterized byrepeated pulses from remote SAs. This is the first attempt to describe theprocesses related to Lagrangian connection to, and retention in, the Gulf ofManfredonia that will be complemented in the future using validated numericalocean models and biophysical models.

ocean science

Linking sardine recruitment in coastal areas to ocean currents using surface drifters and HF radar: a case study in the Gulf of Manfredonia, Adriatic Sea