K. Lundström
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View article: The reintroduction grey seal hunting in Sweden – A review of hunting and seal population data (2001-2024)
The reintroduction grey seal hunting in Sweden – A review of hunting and seal population data (2001-2024) Open
This study reviews the reintroduction and development of grey seal (Halichoerus grypus) hunting in Sweden from 2001 to 2024, together with regional development of the seal population. Implementation of the hunting, together with geographic…
View article: Rapid effects of a fishing closure on whitefish (Coregonus maraena) in the northern Baltic Sea
Rapid effects of a fishing closure on whitefish (Coregonus maraena) in the northern Baltic Sea Open
Areas closed to fishing year-round (no-take zones, NTZs) or during spawning time (spawning closures) are used as a management tool to increase declining fish populations. We evaluated the effects of a 147 km2 NTZ and a 3980 km2 spawning cl…
View article: Species assignment from seal diet samples using shape analyses in a machine learning framework
Species assignment from seal diet samples using shape analyses in a machine learning framework Open
The identification and quantification of prey ingested is a limiting factor in trophic ecology studies and is fundamental for assessing the impact of a predator on prey populations. Vendace (Coregonus albula) and whitefish (C. lavaretus) a…
View article: Outbreaks of highly pathogenic avian influenza (HPAI) epidemics in Baltic Great Cormorant <i>Phalacrocorax carbo</i> colonies in 2021 and 2022
Outbreaks of highly pathogenic avian influenza (HPAI) epidemics in Baltic Great Cormorant <i>Phalacrocorax carbo</i> colonies in 2021 and 2022 Open
Capsule: Over 1,700 Great Cormorants died from H5N1 highly pathogenic avian influenza (HPAI) at11 breeding colonies in the Baltic Sea region, and one in the North Sea, in summer 2021 and 2022.Aim: To determine the nature and impacts of the…
View article: Detection of multiple fish species in the diet of the invasive round goby reveals new trophic interactions in the Baltic Sea
Detection of multiple fish species in the diet of the invasive round goby reveals new trophic interactions in the Baltic Sea Open
The mesopredatory round goby ( Neogobius melanostomus ) is an important fish invader in fresh and brackish waters of the northern hemisphere. Trophic interactions of invasive species can generate ecological impacts across the food web in i…
View article: Environmental abundances of the non‐native round goby<i>Neogobius melanostomus</i>influence feeding of native fish predators
Environmental abundances of the non‐native round goby<i>Neogobius melanostomus</i>influence feeding of native fish predators Open
The authors assessed the importance of the round goby Neogobius melanostomus as prey for three native predatory fish species, Atlantic cod Gadus morhua , European perch Perca fluviatilis and northern pike Esox lucius , in a northern and so…
View article: Long-term effects of no-take zones in Swedish waters
Long-term effects of no-take zones in Swedish waters Open
Marine protected areas (MPAs) are increasingly established worldwide to protect and restore degraded ecosystems. However, the level of protection varies among MPAs and has been found to affect the outcome of the closure. In no-take zones (…
View article: Which factors can affect the productivity and dynamics of cod stocks in the Baltic Sea, Kattegat and Skagerrak?
Which factors can affect the productivity and dynamics of cod stocks in the Baltic Sea, Kattegat and Skagerrak? Open
Stocks of Atlantic cod (Gadus morhua) in the Baltic Sea, Kattegat and Skagerrak (N. Europe) have been strongly
\nexploited for decades bringing them into an enduringly depleted status. Scientific cod stock related advice for
\ntargeted and…
View article: Adipose tissue fatty acids suggest spatial and temporal dietary differences in great cormorants of the Baltic Sea area
Adipose tissue fatty acids suggest spatial and temporal dietary differences in great cormorants of the Baltic Sea area Open
Increased numbers of great cormorants ( Phalacrocorax carbo ) in the Baltic Sea may have local impacts on fisheries and salmonid hatcheries. We studied spatial and temporal variability in cormorant diet, and potential consumption of hatche…
View article: Complementary methods assessing short and long-term prey of a marine top predator ‒ Application to the grey seal-fishery conflict in the Baltic Sea
Complementary methods assessing short and long-term prey of a marine top predator ‒ Application to the grey seal-fishery conflict in the Baltic Sea Open
The growing grey seal (Halichoerus grypus) population in the Baltic Sea has created conflicts with local fisheries, comparable to similar emerging problems worldwide. Adequate information on the foraging habits is a requirement for respons…
View article: Eastern Baltic cod—New knowledge on growth and mortality
Eastern Baltic cod—New knowledge on growth and mortality Open
Project resumé The project “Eastern Baltic cod - new knowledge on growth and mortality is a way to improved management advice” focused on development and implementation of approaches and methods to describe growth and natural mortality of …
View article: Diet of seals in the Baltic Sea region: a synthesis of published and new data from 1968 to 2013
Diet of seals in the Baltic Sea region: a synthesis of published and new data from 1968 to 2013 Open
A crucial first step in assessing and managing the role and impacts of predators on their environment is knowledge on their foraging behaviour and diet. Here, we synthesize previously published and newly generated data on the diet of harbo…
View article: Response to comments by Heikinheimo et al. (in press) on Hansson et al. (2018): competition for the fish—fish extraction from the Baltic Sea by humans, aquatic mammals, and birds
Response to comments by Heikinheimo et al. (in press) on Hansson et al. (2018): competition for the fish—fish extraction from the Baltic Sea by humans, aquatic mammals, and birds Open
As discussions and debates are crucial to science, we appreciate the comments by Heikinheimo et al. (in press) on our article on competition for Baltic Sea fish resources between fishery and wildlife. We cannot see that the comments by Hei…
View article: Competition for the fish – fish extraction from the Baltic Sea by humans, aquatic mammals, and birds
Competition for the fish – fish extraction from the Baltic Sea by humans, aquatic mammals, and birds Open
Seals and fish-eating birds have increased in the Baltic Sea and there is concern that they compete with fisheries. Using data from around year 2010, we compare consumption of different fish species by seals and birds to the catch in the c…
View article: A continuous involvement of stakeholders promotes the ecosystem approach to fisheries in the 8-fjords area on the Swedish west coast
A continuous involvement of stakeholders promotes the ecosystem approach to fisheries in the 8-fjords area on the Swedish west coast Open
The coastal marine environment in the 8-fjords area on the Swedish west coast has been subjected to various stakeholder co-management initiatives since 1999. Stakeholders and authorities have acted by supporting and implementing gradually …
View article: Emergence of the Zoonotic Biliary Trematode Pseudamphistomum truncatum in Grey Seals (Halichoerus grypus) in the Baltic Sea
Emergence of the Zoonotic Biliary Trematode Pseudamphistomum truncatum in Grey Seals (Halichoerus grypus) in the Baltic Sea Open
The biliary trematode Pseudamphistomum truncatum parasitizes a wide range of fish-eating mammals, including humans. Here we report the emergence of this parasite in grey seals (Halichoerus grypus) in the Baltic Sea. One hundred eighty-thre…
View article: Hypoxic areas, density-dependence and food limitation drive the body condition of a heavily exploited marine fish predator
Hypoxic areas, density-dependence and food limitation drive the body condition of a heavily exploited marine fish predator Open
Investigating the factors regulating fish condition is crucial in ecology and the management of exploited fish populations. The body condition of cod ( Gadus morhua ) in the Baltic Sea has dramatically decreased during the past two decades…
View article: Supplementary material from "Hypoxic areas, density-dependence and food limitation drive the body condition of a heavily exploited marine fish predator"
Supplementary material from "Hypoxic areas, density-dependence and food limitation drive the body condition of a heavily exploited marine fish predator" Open
Investigating the factors regulating fish condition is crucial in ecology and the management of exploited fish populations. The body condition of cod (Gadus morhua) in the Baltic Sea has dramatically decreased during the past two decades, …
View article: Comparison between stock assessment and survey CPUEs, additional figures on cod condition and GAMs statistics from Hypoxic areas, density-dependence and food limitation drive the body condition of a heavily exploited marine fish predator
Comparison between stock assessment and survey CPUEs, additional figures on cod condition and GAMs statistics from Hypoxic areas, density-dependence and food limitation drive the body condition of a heavily exploited marine fish predator Open
Investigating the factors regulating fish condition is crucial in ecology and the management of exploited fish populations. The body condition of cod (Gadus morhua) in the Baltic Sea has dramatically decreased during the past two decades, …