Diverse microbial prey in the guts of gelatinous grazers revealed by microscopy

Marine Biology, Journal Year: 2025, Volume and Issue: 172(4)

Published: March 25, 2025

Language: Английский

---

Patchiness of plankton communities at fronts explained by Lagrangian history of upwelled water parcels

Limnology and Oceanography, Journal Year: 2024, Volume and Issue: 69(9), P. 2123 - 2137

Published: Aug. 12, 2024

Abstract The transport of plankton by highly dynamic (sub)mesoscale currents—often associated with fronts and eddies—shapes the structure communities on same time scales as biotic processes, such growth predation (days–weeks). resulting biophysical couplings generate heterogeneities in their finescale distributions (1–10 km), or “patchiness.” Here, we test hypothesis that cross‐frontal patchiness at a front found 200–250 km offshore California Current System was influenced wind‐driven upwelling conditions upstream front. We show situ Eulerian measurements (cross‐frontal transects) can be interpreted Lagrangian framework using satellite‐derived current velocities to trace water parcels backward coastal origins. find majority sampled this originated along central coast during different episodic pulses followed various trajectories before converging temporarily In response nutrient injections coast, transformed journeys from sampling zone, succession phytoplankton zooplankton blooms. captured convergence these distinct points biological histories, which resulted observed spatial patchiness. Our results suggest identifying processes controlling frontal requires understanding them context temporal histories. particular, approaches should more widely applied understand critical ecological patterns systems.

Language: Английский

---

The microorganisms associated with doliolids in a productive coastal upwelling system

Limnology and Oceanography, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 6, 2024

Abstract Doliolids have a unique ability to impact the marine microbial community through bloom events and filter feeding. Their predation on large eukaryotic microorganisms is established evidence of smaller prokaryotic beginning emerge. We studied association between wild‐caught doliolids in Northern California Current system. were collected during identified at three different shelf locations with variable upwelling intensity. discovered associated range functional groups, which included free‐living pelagic Archaea, SAR11, picocyanobacteria. The results suggest possibility that could feed smallest members community, expanding our understanding doliolid feeding mortality. Given clear portions seawater by filtration their high abundance this system, we be an important player shaping structure

Language: Английский

---

Understanding the picture: the promise and challenges of in-situ imagery data in the study of plankton ecology

Journal of Plankton Research, Journal Year: 2024, Volume and Issue: 46(4), P. 365 - 379

Published: June 19, 2024

Abstract Planktons are a fundamental piece of all ocean ecosystems yet, sampling plankton at the high resolution required to understand their dynamics remains challenge. In-situ imaging tools offer an approach sample fine scales. Advances in technology and methodology provide ability make in-situ common tool ecology. Despite massive potential tools, there no standard approaches for analyzing associated data. Consequently, studies inconsistent data, even similar questions. This introduces challenges comparing across devices. In this review, we briefly summarize increasing use, novel applications Then, synthesize analyses used these studies. Finally, address major statistical with unique mechanisms discuss theoretical uncertainties, which arise from low-sampling volumes many tools. To fully unlock power ecological studies, researchers must carefully consider how analyze We recommendations processing data while also acknowledging large need developing new tool.

Language: Английский

---

Patchiness of plankton communities at fronts explained by Lagrangian history of upwelled water parcels

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: April 12, 2024

Abstract The transport of plankton by highly dynamic (sub)mesoscale currents–-often associated with fronts and eddies–-shapes the structure communities on same time scales as biotic processes, such growth predation. resulting bio-physical couplings generate heterogeneities in their finescale distributions (1-10 km), or "patchiness." Here, we test hypothesis that cross-frontal patchiness at a front found 200-250 km offshore California Current System was influenced wind-driven upwelling conditions upstream front. We show situ Eulerian measurements (cross-frontal transects) can be interpreted Lagrangian framework using satellite-derived current velocities to trace water parcels backward coastal origins. find majority sampled this originated along central coast during different episodic pulses followed various trajectories before converging temporarily In response nutrient injections coast, transformed journeys from sampling zone, succession phytoplankton zooplankton blooms. captured convergence these distinct points biological histories, which resulted observed spatial patchiness. Our results suggest identifying processes controlling frontal requires understanding them context temporal rather than two-dimensional responses local processes. particular, approaches should more widely applied understand critical ecological patterns systems.

Language: Английский

---

INFLUENCE OF SEA SURFACE TEMPERATURE AND CHLOROPHYLL-A ON MACKEREL PRODUCTIVITY IN BANTEN BAY, INDONESIA: ANALYSIS USING AQUA MODIS DATA (2014–2023)

Geographia Technica, Journal Year: 2024, Volume and Issue: 20(1/2025), P. 44 - 63

Published: Dec. 26, 2024

Banten Bay, located in Province near Java Island's northwestern tip, supports abundant mackerel populations (Rastrelliger sp.), a primary fishing commodity impacting coastal communities' livelihoods.Mackerel migratory patterns are sensitive to oceanographic conditions, making them indicators of marine ecosystem health.This study investigates the impact these conditions on catches Bay waters using Aqua Moderate Resolution Imaging Spectroradiometer (Aqua MODIS) data from 2014 2023, combined with catch records Nusantara Fishery Harbor (NFH) Karangantu and analyzed Generalized Additive Model (GAM).The results indicate increased productivity, particularly during west season (October December), coinciding upwelling-driven Chlorophyll-a (Chl-a) rises.Sea Surface Temperature (SST) distribution analysis revealed seasonal fluctuations (29.33°C -31.32°C), supporting aggregation warmer waters.Chl-a levels peaked upwelling seasons, enhancing food availability.Sea depth showed successful at depths around 50-60 m.GAM confirmed SST Chl-a as significant factors, having dominant influence.The effect best-explained provides insights for sustainable fisheries management.

Language: Английский

---