Alteration of coastal productivity and artisanal fisheries interact to affect a marine food web

Scientific Reports, Journal Year: 2021, Volume and Issue: 11(1)

Published: Jan. 19, 2021

Abstract Top-down and bottom-up forces determine ecosystem function dynamics. Fisheries as a top-down force can shorten destabilize food webs, while effects driven by climate change alter the of primary productivity. We assessed response highly-resolved intertidal web to these two global drivers, using network analysis bioenergetic modelling. quantified relative importance artisanal fisheries another predator species, evaluated independent combined changes in plankton productivity on The was robust loss all harvested species but sensitive decline Interestingly, dampened negative impacts decreasing non-harvested reducing predation pressure consumers resources, interspecific competition between basal species. In contrast, increased sensitivity fishing total web. Our results show that strategies for new scenarios caused are needed protect marine ecosystems wellbeing local communities dependent their resources.

Language: Английский

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Extinction of biotic interactions due to habitat loss could accelerate the current biodiversity crisis

Ecological Applications, Journal Year: 2022, Volume and Issue: 32(6)

Published: April 2, 2022

Habitat loss disrupts species interactions through local extinctions, potentially orphaning that depend on interacting partners, via mutualisms or commensalisms, and increasing secondary extinction risk. Orphaned may become functionally secondarily extinct, the severity of current biodiversity crisis. While habitat destruction is a major cause loss, number extinctions largely unknown. We investigate relationship between orphaned species, bipartite network properties. Using real seed dispersal network, we simulate to estimate rate at which are orphaned. To be able draw general conclusions, also in synthetic networks quantify how changes properties affect orphan rates across broader parameter space. Both simulations show even small amounts can up 10% More area less connected networks, greater disparity richness network's trophic levels generally result more species. As lost land-use conversion climate change, increase community-level ecosystem functions. However, potential repercussions ranges from minimal (no orphaned) catastrophic (up 60% within orphaned). Severity depends much interaction intactness community affects degree redundancy networks. could add substantially function worldwide.

Language: Английский

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Using individual‐based trait frequency distributions to forecast plant‐pollinator network responses to environmental change

Ecology Letters, Journal Year: 2024, Volume and Issue: 27(1)

Published: Jan. 1, 2024

Abstract Determining how and why organisms interact is fundamental to understanding ecosystem responses future environmental change. To assess the impact on plant‐pollinator interactions, recent studies have examined effects of change individual interactions accumulate generate species‐level responses. Here, we review developments in using networks interacting individuals along with their functional traits, where are nested within species nodes. We highlight these individual‐level, trait‐based connect intraspecific trait variation (as frequency distributions multiple traits) dynamic communities. This approach can better explain interaction plasticity, changes probabilities network structure over spatiotemporal or other gradients. argue that only through appreciating such plasticity accurately forecast potential vulnerability follow this general guidance collect analyse high‐resolution data, hope improving predictions for targeted effective conservation.

Language: Английский

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Exploring the Role of Keystone Species in Marine Ecosystems: A New Perspective Combining Energy Flow and Ecological Network Analysis

Ecosystems, Journal Year: 2025, Volume and Issue: 28(1)

Published: Jan. 13, 2025

Language: Английский

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Sun exposure as a main driver influencing the arriving communities of saproxylic beetles on deadwood

Ecological Entomology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 31, 2025

Abstract The ability to locate and colonise ephemeral deadwood resources is crucial saproxylic beetle assemblages. Saproxylic beetles suitable substrates mainly through visual cues via olfactory emitted by deadwood, other insects fungi. For the conservation of beetles, it essential understand which abiotic biotic factors most significantly influence their habitat requirements when locating substrates. In a field experiment, in sunny shaded plots, we exposed 400 bundles freshly cut each consisting three logs with combination different tree species treatments (i.e., fungi inoculation), mimicking interactions. We sampled arriving sticky traps directly applied on evaluate effect sun exposure interactions beetles. found higher numbers abundance under than conditions, but detected no standardised number (diversity). However, observed shift diversity from conditions early late season. Beetle assemblages differ between sun‐exposed deadwood. Treatments (fungi inoculation, sterilisation burning) did not affect Our results suggest that beetles' attraction driven rather interactions, despite assumed close associations To protect full spectrum species, recommend maintaining areas, as provides unique habitats supporting

Language: Английский

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