Adding climate change to the mix: responses of aquatic ectotherms to the combined effects of eutrophication and warming

Biology Letters, Journal Year: 2021, Volume and Issue: 17(10)

Published: Oct. 1, 2021

The threat of excessive nutrient enrichment, or eutrophication, is intensifying across the globe as climate change progresses, presenting a major management challenge. Alterations in precipitation patterns and increases temperature are increasing loadings aquatic habitats creating conditions that promote proliferation cyanobacterial blooms. exacerbating effects warming on eutrophication well established, but we lack an in-depth understanding how ectotherms respond to tandem. Here, I provide brief overview critique studies exploring cumulative impacts ectotherms, forward direction using mechanistically focused, multi-threat experiments disentangle complex interactions. Evidence date suggests rapid will exacerbate negative gradual induce physiological remodelling provides protection against nutrients hypoxia. Moving forward, research benefit from greater focus unveiling cause effect mechanisms behind interactions designing treatments better mimic dynamics nature. This approach enable robust predictions species responses ongoing integration into policies.

Language: Английский

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Reference state, structure, regime shifts, and regulatory drivers in a coastal sea over the last century: The Central Baltic Sea case

Limnology and Oceanography, Journal Year: 2021, Volume and Issue: 67(S1)

Published: Nov. 19, 2021

Abstract The occurrence of regime shifts in marine ecosystems has important implications for environmental legislation that requires setting reference levels and targets quantitative restoration outcomes. Baltic Sea ecosystem undergone large changes the 20 th century related to anthropogenic pressures climate variability, which have caused reorganization. Here, we compiled historical information identified relationships our dataset using multivariate statistics modeling across 31 biotic abiotic variables from 1925 2005 Central Sea. We a series 1930s, 1970s, at end 1980s/beginning 1990s. In long term, showed shift benthic pelagic‐dominated state. Historically, components played significant role trophic transfer, while more recent productive system pelagic–benthic coupling was weak pelagic dominated. Our analysis shows entire time period, productivity, climate, hydrography mainly affected functioning food web, whereas fishing became recently. Eutrophication had far‐reaching direct indirect impacts long‐term perspective changed not only state but also higher levels. study suggests switch regulatory drivers salinity oxygen. “reference ecosystem” may guide establishment an baseline threshold values indicators

Language: Английский

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Global change risks a threatened species due to alteration of predator–prey dynamics

Ecosphere, Journal Year: 2023, Volume and Issue: 14(3)

Published: March 1, 2023

Abstract Although global change can reshape ecosystems by triggering cascading effects on food webs, indirect interactions remain largely overlooked. Climate‐ and land‐use‐induced changes in landscape cause shifts vegetation composition, which affect entire webs. We used simulations of forest dynamics movements interacting species, parameterized empirical observations, to predict the outcomes a large‐mammal web boreal forest. demonstrate that climate‐ landscapes exacerbate asymmetrical apparent competition between moose threatened caribou populations through wolf predation. increased prey mortalities came from both behavioral numerical responses, responses had an overwhelming effect. The increase was exacerbated cumulating land use over short term climate impacts long term, with higher impact use. Indirect trophic will be key understanding community under change.

Language: Английский

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From global climate goals to local practice—mission-oriented policy enactment in three Swedish regions

Science and Public Policy, Journal Year: 2023, Volume and Issue: 50(4), P. 603 - 618

Published: April 8, 2023

Abstract As the national and supranational levels of government embrace concept missions to solve wicked problems, importance understanding how move from one level governance another becomes essential. In this paper, we present a comparative case analysis evolving regional biogas systems consider global on climate action are enacted in local practice. Referring wickedness terms contestation, complexity, uncertainty both problems solutions, examine such framings affect operationalisation missions. Our results indicate that process translation, often increases, but additional does not always worsen outcomes.

Language: Английский

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Impacts and uncertainties of climate-induced changes in watershed inputs on estuarine hypoxia

Biogeosciences, Journal Year: 2023, Volume and Issue: 20(10), P. 1937 - 1961

Published: May 26, 2023

Abstract. Multiple climate-driven stressors, including warming and increased nutrient delivery, are exacerbating hypoxia in coastal marine environments. Within watersheds, environmental managers particularly interested climate impacts on terrestrial processes, which may undermine the efficacy of management actions designed to reduce eutrophication consequent low-oxygen conditions receiving waters. However, substantial uncertainty accompanies application Earth system model (ESM) projections a regional modeling framework when quantifying future changes estuarine due change. In this study, two downscaling methods applied multiple ESMs used force independent watershed models for Chesapeake Bay, large coastal-plain estuary eastern United States. The projected then coupled 3-D hydrodynamic–biogeochemical project hypoxia, with particular emphasis projection uncertainties. Results indicate that all three factors (ESM, method, model) found contribute substantially associated choice ESM being largest contributor. Overall, absence actions, there is high likelihood change will expand by 2050 relative 1990s baseline period; however, increase quite small (4 %) because only climate-induced inputs considered not those itself. also demonstrate attainment established reduction targets annual about 50 % compared 1990s. Given these estimates, it virtually certain fully implemented reducing excess loadings outweigh increases driven runoff.

Language: Английский

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The carrying capacity of the seas and oceans for future sustainable food production: Current scientific knowledge gaps

Food and Energy Security, Journal Year: 2023, Volume and Issue: 12(4)

Published: June 12, 2023

Abstract The expected increase in global food demand, as a consequence of rising and wealthier world population, an awareness the limits drawbacks modern agriculture, has resulted growing attention to potential seas oceans produce more food. capture production presently exploited marine fish stocks other species or less reached its maximum can only be slightly improved by better management. This leaves four alternative options open production: (1) manipulating entire web structure via removal high trophic level allow increasing exploitation low species, (2) harvesting so far unexploited stocks, such various from mesopelagic zone ocean larger zooplankton polar regions, (3) low‐trophic mariculture seaweeds herbivorous animals, (4) restoration impoverished coastal ecosystems artificially productivity ecological engineering. In this paper, we discuss these pay missing scientific knowledge needed assess their sustainability. To sustainability, it is prerequisite establish robust definitions assessments biological carrying capacity systems, but also necessary evaluate broader socio‐economic governance

Language: Английский

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Pathways Linking Watershed Development and Riparian Quality to Stream Water Quality and Fish Communities: Insights from 233 Subbasins of the Great Lakes Region

Water Research, Journal Year: 2024, Volume and Issue: 261, P. 121964 - 121964

Published: June 21, 2024

Language: Английский

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Phosphorus recovery methods from secondary resources, assessment of overall benefits and barriers with focus on the Nordic countries

Journal of Material Cycles and Waste Management, Journal Year: 2023, Volume and Issue: 25(5), P. 3104 - 3116

Published: July 11, 2023

Abstract Phosphorus (P) recovery and recycling play a crucial role in improving resource efficiency, sustainable nutrient management moving toward circular economy. Increasing demand for fertilizers, signs of geopolitical constraints, high discharge P to waterbodies are the other reasons pursue circularity P. Various research have been carrying out several processes developed P-recovery from different resources. However, there is still huge unexplored potential specially regional framework four main P-rich waste resources: food waste, manure, mining sewage sludge. This study reviews methods these secondary resources comprehensively. Additionally, it analyzes Nordic viewpoint P-cycle by evaluating reserves, demands, gain systematic assessment how countries could move economy Results this show that replacing mineral fertilizer considerable extent. overcome challenges studied resources, policymakers researchers need take decisions make innovation along each open new possibilities

Language: Английский

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Stakeholder workshops on western Baltic cod fisheries–conflict and consensus in the face of a highly dynamic ecosystem

Biological Conservation, Journal Year: 2025, Volume and Issue: 302, P. 110983 - 110983

Published: Jan. 17, 2025

Language: Английский

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The complex structure of aquatic food webs emerges from a few assembly rules

Nature Ecology & Evolution, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 28, 2025

Abstract Food-web theory assumes that larger-bodied predators generally select larger prey. This allometric rule fails to explain a considerable fraction of trophic links in aquatic food webs. Here we show food-web constraints result guilds vary size but have specialized on prey the same size, and distribution such specialist explains about one-half structure. We classified 517 pelagic species into five predator functional groups. Most these follow three selection strategies: guild following whereby eat two specialists prefer either smaller or than predicted by rule. Such coexistence non-specialist independent from taxa body points towards structural principles behind ecological complexity. pattern describes >90% observed linkages 218 webs 18 ecosystems worldwide. The can be linked eco-evolutionary exploitation provides blueprint for more effective models.

Language: Английский

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