Patrick Polte
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View article: Growth and Developmental Processes Alternate During Larval Development of Atlantic Herring
Growth and Developmental Processes Alternate During Larval Development of Atlantic Herring Open
During their development, fish pass through a series of developmental processes advancing, for example, their physiological and locomotive abilities. In particular, many marine fish larvae often hatch at an (semi‐) embryonic developmental …
View article: Direct evidence of natal homing in an Atlantic herring metapopulation
Direct evidence of natal homing in an Atlantic herring metapopulation Open
In times of increased human interventions, knowledge on animal breeding-site fidelity is crucial for the conservation of important reproduction areas vital to the resilience of populations. In particular, in the marine environment, depende…
View article: Worldwide Appraisal of Knowledge Gaps in the Space Usage of Small Pelagic Fish: Highlights Across Stock Uncertainties and Research Priorities
Worldwide Appraisal of Knowledge Gaps in the Space Usage of Small Pelagic Fish: Highlights Across Stock Uncertainties and Research Priorities Open
International audience
View article: Herring Assessment Working Group for the Area South of 62°N (HAWG)
Herring Assessment Working Group for the Area South of 62°N (HAWG) Open
Chapter 9, Sandeel in Division 3.a and Subarea 4 and Division 6.a, published 28/02/2025.Chapters 1-14, excluding chapter 8 published 15/05/2025.Chapter 8, Irish Sea Herring, published 04/08/2025. Report available in full.Chapter 2, Herring…
View article: Herring Assessment Working Group for the Area South of 62°N (HAWG)
Herring Assessment Working Group for the Area South of 62°N (HAWG) Open
The ICES herring assessment working group (HAWG) met in Aberdeen, Scotland from 12-21 March 2024 to assess the state of six herring (Clupea harengus) and one sprat (Sprattus sprattus) stock. Additionally, HAWG provided advice for eight San…
View article: Future climate change and marine heatwaves - Projected impact on key habitats for herring reproduction
Future climate change and marine heatwaves - Projected impact on key habitats for herring reproduction Open
This study explores the impact of global climate targets on sea surface temperatures and marine heatwaves (MHWs) in the Baltic Sea. We further evaluate potential adverse climate effects on the reproductive success of the western Baltic Sea…
View article: A climate vulnerability assessment of the fish community in the Western Baltic Sea
A climate vulnerability assessment of the fish community in the Western Baltic Sea Open
Marine fisheries are increasingly impacted by climate change, affecting species distribution and productivity, and necessitating urgent adaptation efforts. Climate vulnerability assessments (CVA), integrating expert knowledge, are vital fo…
View article: A wolf in sheep's clothing: Planktivorous <scp>A</scp>tlantic herring preys on demersal fishes in coastal waters
A wolf in sheep's clothing: Planktivorous <span>A</span>tlantic herring preys on demersal fishes in coastal waters Open
Herring and other small pelagic fishes represent a trophic bottleneck for the fluxes of energy and biomass from marine primary producers up to the level of apex predators (Checkley et al., 2009)—including humans (Konar et al., 2019). Atlan…
View article: Herring Assessment Working Group for the Area South of 62°N (HAWG)
Herring Assessment Working Group for the Area South of 62°N (HAWG) Open
The ICES herring assessment working group (HAWG) met online for nine days in March 2023 to assess the state of six herring (Clupea harengus) and three sprat (Sprattus sprattus) stocks. Additionally, HAWG provided advice for eight Sandeel (…
View article: Second Workshop on Stock Identification and Allocation of Catches of Herring to Stocks (WKSIDAC2)
Second Workshop on Stock Identification and Allocation of Catches of Herring to Stocks (WKSIDAC2) Open
Population identification plays an important role in the assessment of Atlantic herring (Clupea harengus). Several morphological/traditional methods have been applied in the past to split catches (both within survey and commercial samples)…
View article: Population genetics of the hound needlefish <i>Tylosurus crocodilus</i> (Belonidae) indicate high connectivity in Tanzanian coastal waters
Population genetics of the hound needlefish <i>Tylosurus crocodilus</i> (Belonidae) indicate high connectivity in Tanzanian coastal waters Open
The hound needlefish Tylosurus crocodilus (Belonidae) is a highly demanded fish in the local markets of Tanzania, but the growing coastal population threatens its sustainability. As belonids are highly migratory fishes utilising various pa…
View article: A staging system for Atlantic herring (<scp><i>Clupea harengus</i></scp>) larvae based on external morphology and skeletal development
A staging system for Atlantic herring (<span><i>Clupea harengus</i></span>) larvae based on external morphology and skeletal development Open
Atlantic herring ( Clupea harengus ) plays a key role within temperate marine food webs and is targeted by a significant over‐regional fishery. Due to its high economic importance, dynamics in herring stock biomass and recruitment are clos…
View article: Mixed-stock analysis of Atlantic herring (<i>Clupea harengus</i>): a tool for identifying management units and complex migration dynamics
Mixed-stock analysis of Atlantic herring (<i>Clupea harengus</i>): a tool for identifying management units and complex migration dynamics Open
We developed and validated a mixed-stock analysis (MSA) method with 59 single-nucleotide polymorphisms selected from genome-wide data to assign individuals to populations in mixed-stock samples of Atlantic herring from the North and Baltic…
View article: Caught in the middle: bottom-up and top-down processes impacting recruitment in a small pelagic fish
Caught in the middle: bottom-up and top-down processes impacting recruitment in a small pelagic fish Open
Understanding the drivers behind fluctuations in fish populations remains a key objective in fishery science. Our predictive capacity to explain these fluctuations is still relatively low, due to the amalgam of interacting bottom-up and to…
View article: Disentangling seasonal from maternal effects on egg characteristics in western Baltic spring‐spawning herring <i>Clupea harengus</i>
Disentangling seasonal from maternal effects on egg characteristics in western Baltic spring‐spawning herring <i>Clupea harengus</i> Open
In marine fishes, the timing of spawning determines the environment offspring will face and, therefore, the chances of early life stage survival. Different waves of Atlantic herring Clupea harengus spawn throughout spring in the western Ba…
View article: Reduced Reproductive Success of Western Baltic Herring (Clupea harengus) as a Response to Warming Winters
Reduced Reproductive Success of Western Baltic Herring (Clupea harengus) as a Response to Warming Winters Open
Shallow estuaries, bays, and lagoons are generally considered hot spots of ocean productivity that often adjust rapidly to seasonal variations in atmospheric temperatures. During spring when biological reproductive processes begin in the t…
View article: Working Group on Surveys on Ichthyoplankton in the North Sea and adjacent Seas (WGSINS)
Working Group on Surveys on Ichthyoplankton in the North Sea and adjacent Seas (WGSINS) Open
The objectives of the Working group on Surveys on Ichthyoplankton in the North Sea and adja-cent Seas (WGSINS) were to review Ichthyoplankton surveys undertaken for assessment pur-poses, coordinate the surveys in 2020, prepare data for arc…
View article: Workshop on the Realigning of the Ecosystem Observation Steering Group (WKREO)
Workshop on the Realigning of the Ecosystem Observation Steering Group (WKREO) Open
The Workshop on Realigning of the Ecosystem Observation Steering Group (WKREO) reviewed the critical task and information requirements of data collectors and data users that contribute to the development of ICES fisheries and ecosystem adv…
View article: Elemental Inventory in Fish Otoliths Reflects Natal Origin of Atlantic Herring (Clupea harengus) From Baltic Sea Juvenile Areas
Elemental Inventory in Fish Otoliths Reflects Natal Origin of Atlantic Herring (Clupea harengus) From Baltic Sea Juvenile Areas Open
Despite centuries of human exploitation and research on Atlantic herring (Clupea harengus) in Europe, there is still much uncertainty on where major nursery areas are located. However, understanding the quantitative contribution of particu…
View article: Environmental determinants of larval herring (<i>Clupea harengus</i>) abundance and distribution in the western Baltic Sea
Environmental determinants of larval herring (<i>Clupea harengus</i>) abundance and distribution in the western Baltic Sea Open
The analysis of the abundance and distribution of the early life‐history stages of the western Baltic spring‐spawning herring population, spanning 23 yr, revealed that the abundance of yolk‐sac larvae was strongly spatially structured and …
View article: Predation on Atlantic herring (<i>Clupea harengus</i>) eggs by the resident predator community in coastal transitional waters
Predation on Atlantic herring (<i>Clupea harengus</i>) eggs by the resident predator community in coastal transitional waters Open
Atlantic herring ( Clupea harengus ) migrates from offshore to coastal areas to spawn and their eggs and larvae may substantially increase prey resources for resident predators. We combined an in situ predator exclusion experiment using eg…
View article: Ontogenetic loops in habitat use highlight the importance of littoral habitats for early life-stages of oceanic fishes in temperate waters
Ontogenetic loops in habitat use highlight the importance of littoral habitats for early life-stages of oceanic fishes in temperate waters Open
General concepts of larval fish ecology in temperate oceans predominantly associate dispersal and survival to exogenous mechanisms such as passive drift along ocean currents. However, for tropical reef fish larvae and species in inland fre…