A5009465510- Marine and fisheries research
- Fish Ecology and Management Studies
- Marine Bivalve and Aquaculture Studies
- Species Distribution and Climate Change
- Coral and Marine Ecosystems Studies
- Environmental DNA in Biodiversity Studies
- Marine and coastal plant biology
- Marine Biology and Ecology Research
- Identification and Quantification in Food
- Coastal and Marine Management
- Ecosystem dynamics and resilience
- Coastal wetland ecosystem dynamics
- Land Use and Ecosystem Services
- Food Waste Reduction and Sustainability
- Isotope Analysis in Ecology
- Sustainable Agricultural Systems Analysis
- Economic and Environmental Valuation
- Botany and Plant Ecology Studies
- Evolutionary Game Theory and Cooperation
- Ecology and Vegetation Dynamics Studies
- Environmental Conservation and Management
- Soil and Water Nutrient Dynamics
- Microbial Community Ecology and Physiology
- Wildlife Ecology and Conservation
- Marine and environmental studies
Swedish University of Agricultural Sciences
2017-2024
Göteborgs Stads
2022
University of Gothenburg
2022
Swedish National Board of Fisheries
2009-2018
Sweden Water Research (Sweden)
2013-2018
Uppsala University
2009-2013
Abstract Ljunggren, L., Sandström, A., Bergström, U., Mattila, J., Lappalainen, Johansson, G., Sundblad, Casini, M., Kaljuste, O., and Eriksson, B. K. 2010. Recruitment failure of coastal predatory fish in the Baltic Sea coincident with an offshore ecosystem regime shift. – ICES Journal Marine Science, 67: 1587–1595. The dominant southwestern Sea, perch pike, have decreased markedly abundance during past decade. An investigation into their recruitment at 135 sites showed that both species...
Abstract Habitat protection is a strategy often proposed in fisheries management to help maintain viable populations of exploited species. Yet, quantifying the importance habitat availability for population sizes difficult, as precise distribution essential habitats poorly known. To quantify contribution from coastal nursery fish sizes, we related adult density amount available 12 two dominant predatory species 40 000-km2 archipelago area Baltic Sea. was mapped using three conceptually...
Trophic cascades occur in many ecosystems, but the factors regulating them are still elusive. We suggest that an overlooked factor is trophic interactions (TIs) often scale-dependent and possibly interact across spatial scales. To explore role of scale for cascades, particularly occurrence cross-scale (CSIs), we collected analysed food-web data from 139 stations 32 bays Baltic Sea. found evidence a four-level cascade linking TIs two scales: at bay scale, piscivores (perch pike) controlled...
Abstract Regime shifts in ecosystem structure and processes are typically studied from a temporal perspective. Yet, theory predicts that large ecosystems with environmental gradients, should start locally gradually spread through space. Here we empirically document spatially propagating shift the trophic of aquatic ecosystem, dominance predatory fish (perch, pike) to small prey fish, three-spined stickleback. Fish surveys 486 shallow bays along 1200 km western Baltic Sea coast during...
In the Baltic Sea, large predatory fish northern pike (Esox lucius L.) is important for both recreational fisheries and ecosystem functioning. As existing fishery-independent surveys do not adequately monitor populations, a general lack of knowledge on population status trends poses challenges management. Here we use angling data as an alternative method to describe development along Swedish Sea coast from 1938 onwards assess change over time in potential mortality factors by estimating...
Abstract Reliable abundance information is the foundation for managing aquatic resources. Species with low catchability are, however, often overlooked in monitoring programmes. Thus, governing bodies lack data necessary to make well‐informed management decisions. Environmental DNA (eDNA) can produce quantitative estimates of fish abundances, but precision varies greatly depending on species and system. It is, therefore, evaluate its performance investigate how biomass density affects eDNA...
Ecosystem regime shifts can have severe ecological and economic consequences, making it a top priority to understand how make systems more resilient. Theory predicts that spatial connectivity the local environment interact shape resilience, but empirical studies are scarce. Here, we use >7000 fish samplings from Baltic Sea coast test this prediction in an ongoing, spatially propagating shift dominance predatory opportunistic mesopredator, with cascading effects throughout food web. After...
Summary 1. The juvenile stages of fish are often dependent on specific habitat types for their survival. Protecting these habitats may be crucial maintaining strong adult stocks. Natura 2000 network the European Union offers protection marine that essential recruitment many species. By protecting critical important stocks 2. We present a spatially explicit, GIS‐based, assessment two components ecological coherence Marine Protected Area (MPA) networks: representativity and connectivity....
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 398:235-243 (2010) - DOI: https://doi.org/10.3354/meps08313 Habitat selectivity of substrate-spawning fish: modelling requirements for Eurasian perch Perca fluviatilis Martin Snickars1,*, Göran Sundblad2,3, Alfred Sandström4, Lars Ljunggren2, Ulf Bergström2, Gustav Johansson5, Johanna Mattila1 1Husö...
Summary Eutrophication is severely affecting species distributions and ecosystem functioning in coastal areas. Targets for eutrophication reduction have been set the Baltic Sea Action Plan ( BSAP ) using Secchi depth, a measure of water transparency, as main status indicator. Despite high economic costs involved, potential effects this political decision on key habitats not assessed. In case study including central to functioning, we modelled changing depth distribution bladderwrack Fucus...
Abstract Bučas, M., Bergström, U., Downie, A-L., Sundblad, G., Gullström, von Numers, Šiaulys, A., and Lindegarth, M. 2013. Empirical modelling of benthic species distribution, abundance, diversity in the Baltic Sea: evaluating scope for predictive mapping using different approaches. – ICES Journal Marine Science, 70: 1233–1243. The performance distribution models common Sea was compared four non-linear methods: generalized additive (GAMs), multivariate adaptive regression splines, random...
Background Organism biomass is one of the most important variables in ecological studies, making estimations common laboratory tasks. Biomass small macroinvertebrates usually estimated as dry mass or ash-free (hereafter ‘DM’ vs. ‘AFDM’) per sample; a laborious and time consuming process, that often can be speeded up using easily measured reliable proxy like body size wet (fresh) mass. Another way estimating AFDM (one accurate but also time-consuming estimates biologically active tissue mass)...
Recreational boating increases globally and associated moorings are often placed in vegetated habitats important for fish recruitment. Meanwhile, assessments of the effects on vegetation, potential assemblages rare. Here, we analysed (i) effect small-boat marinas vegetation structure, (ii) juvenile abundance relation to cover shallow wave-sheltered coastal inlets. We found have lower height, a different species composition, compared control This became stronger with increasing berth density....
Environmental compensation should address negative impacts from human activities on nature, including loss of biodiversity and ecosystem services. However, successful compensation, achieving no net loss, requires broad quantitative information different types losses gains. We find that the scope compensatory schemes varies in what is considered compensable, which makes it challenging to apply a conceptual approach consistently across with needs. propose flexible yet structured framework for...
Abstract Size‐ and species‐selective harvest inevitably alters the composition of targeted populations communities. This can potentially harm fish stocks, ecosystem functionality, related services, as evidenced in numerous commercial fisheries. The high popularity rod‐and‐reel recreational fishing, practiced by hundreds millions globally, raises concerns about similar deteriorating effects. Despite its prevalence, species size selectivity fisheries remain largely unquantified due to a lack...
Environmental parameters were used to investigate barriers gene flow and genetic differentiation in the Eurasian perch (Perca fluviatilis L.) at a small geographical scale an archipelago system. Significant was found among locations. Distance per se did not play major role reduction of flow. Instead, largest differences between populations correlated with changes environmental conditions, such as temperature time spawning. The results show that divergence can arise habitats thought be highly...
Abstract Support for eDNA as a quantitative monitoring tool is growing worldwide. Despite advances, there are still uncertainties regarding the representability of signal over varying spatiotemporal scales, influence abiotic forcing, and phenological changes affecting behavior study organism, particularly in open environments. To assess variability predictive power analysis, we applied species‐specific real‐time PCR on water filtrates during two visits to 22 coastal bays Baltic Sea. Within...