Invasive species drive cross-ecosystem effects worldwide

Nature Ecology & Evolution, Journal Year: 2024, Volume and Issue: 8(6), P. 1087 - 1097

Published: March 19, 2024

Language: Английский

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Intentional release of native species undermines ecological stability

Proceedings of the National Academy of Sciences, Journal Year: 2023, Volume and Issue: 120(7)

Published: Feb. 7, 2023

The massive release of captive-bred native species (“intentional release”) is a pervasive method to enhance wild populations commercial and recreational species. However, such external inputs may disrupt the sensitive interactions that allow competing coexist, potentially compromising long-term community stability. Here, we use theory data stream fish communities show intentional destabilizes dynamics with limited demographic benefit enhanced Our predicted intensifies interspecific competition, facilitating competitive exclusion unenhanced otherwise stably coexist. In parallel, excessive input individuals suppressed natural recruitment via intensified within-species competition. Consequently, ecological reduced density unstable temporal dynamics. Consistent this prediction, showed greater fluctuations fewer taxonomic richness in rivers intensive hatchery salmon—a major fishery resource worldwide. findings alarm current overreliance on accelerate global biodiversity loss undesired consequences for provisioning ecosystem services.

Language: Английский

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Directed conservation of the world’s reef sharks and rays

Nature Ecology & Evolution, Journal Year: 2024, Volume and Issue: 8(6), P. 1118 - 1128

Published: May 20, 2024

Language: Английский

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Disparate genetic divergence patterns in three corals across a pan-Pacific environmental gradient highlight species-specific adaptation

npj Biodiversity, Journal Year: 2023, Volume and Issue: 2(1)

Published: July 7, 2023

Tropical coral reefs are among the most affected ecosystems by climate change and face increasing loss in coming decades. Effective conservation strategies that maximize ecosystem resilience must be informed accurate characterization of extant genetic diversity population structure together with an understanding adaptive potential keystone species. Here we analyzed samples from Tara Pacific Expedition (2016-2018) completed 18,000 km longitudinal transect Ocean sampling three widespread corals-Pocillopora meandrina, Porites lobata, Millepora cf. platyphylla-across 33 sites 11 islands. Using deep metagenomic sequencing 269 colonies conjunction morphological analyses variability data, can show despite a targeted encompasses multiple cryptic These species exhibit disparate biogeographic patterns and, importantly, distinct evolutionary identical environmental regimes. Our findings demonstrate on basin scale trajectories species-specific only part predicted environment. This highlights integrate multi-species investigations to discern genomic footprints shaped selection as well for change.

Language: Английский

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Constructing wetland ecological corridor system based on hydrological connectivity with the goal of improving regional biodiversity

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 368, P. 122074 - 122074

Published: Aug. 11, 2024

Language: Английский

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Predation and spatial connectivity interact to shape ecosystem resilience to an ongoing regime shift

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Feb. 12, 2024

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 controlling for influence of other drivers (including increasing mesopredator densities), find habitat increases resilience shift, only when densities fish-eating predators (seals, cormorants) low. Resilience also temperature, likely through boosted growth recruitment. These findings confirm theoretical predictions together shifts.

Language: Английский

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Modeling the spatial distribution of numbers of coral reef fish species and community types in the Western Indian Ocean faunal province

Marine Ecology Progress Series, Journal Year: 2024, Volume and Issue: 730, P. 59 - 78

Published: Feb. 5, 2024

Predicting and mapping coral reef diversity at moderate scales can assist spatial planning prioritizing conservation activities. We made coarse-scale (6.25 km 2 ) predictive models for numbers of fish species community composition starting with a spatially complete database 70 environmental variables available 7039 mapped cells in the Western Indian Ocean. An ensemble model was created from process variable elimination selectivity to make best predictions irrespective human influences. This compared using preselected commonly used evaluate climate change fishing water quality Many (~27) contributed number models, but local biomass, depth, retention connectivity were dominant predictors. The key human-influenced included biomass distance populations, weaker associations sediments nutrients. Climate-influenced generally median sea surface temperature (SST) contributions declining order SST kurtosis, bimodality, excess summer heat, skewness, rate rise, cover. Community variability explained by richness axes damselfishes-angelfishes butterflyfishes-parrotfishes. Numbers damselfish-angelfish ecologically separated damselfishes declined increasing temperature, cumulative chronic stresses. Species butterflyfish-parrotfish butterflyfish acute variability, rise. Several hotspots found East African Coastal Current Ecoregion centered Tanzania, followed Mayotte, southern Kenya, northern Mozambique. If be maintained, broad distributions combined compensatory responses should maintain high ecological resilience other stressors.

Language: Английский

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Corridors and barriers to marine connectivity around southern Africa

Marine Ecology Progress Series, Journal Year: 2023, Volume and Issue: 731, P. 105 - 127

Published: April 26, 2023

Detailed knowledge on connectivity, i.e. the exchange of marine organisms among geographically separated populations, is essential for effective spatial planning strategies and design protected areas (MPAs) in coastal ecosystems. Coastal waters around southern Africa are characterized by complex oceanographic processes that strongly influence challenging management Here we reviewed connectivity studies conducted across 25° latitude both southeastern southwestern sides based biophysical modelling, ecological molecular approaches, identified 7 corridors 8 barriers recognized to a variety vertebrate invertebrate taxa commercial interest. These were generally consistent studies, species methodological reflected bioregion breaks. Nevertheless, life history traits appear be important understanding why some may notable stages not others. Our review underlines value including from different disciplines order have broad view and, particular, complementarity larval-dispersal models seascape genetics emphasized. The this represent baselines critically assess existing MPAs prioritize new efforts mitigate human impacts

Language: Английский

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Quantifying the effects of fragmentation of connectivity networks of deep‐sea vulnerable marine ecosystems

Diversity and Distributions, Journal Year: 2024, Volume and Issue: 30(5)

Published: March 12, 2024

Abstract Aim Protection of vulnerable marine ecosystems (VMEs) in the high seas has focussed on identifying concentrations indicator species and prohibiting operation bottom‐contact fishing gears where those occur significant concentrations. Most such have planktonic larvae depend dispersal networks for inter‐generational persistence. Yet, connectivity amongst patches VME seldom been considered when spatial management measures are introduced. Here, relative importance individual maintenance their is evaluated, a prioritization scheme action proposed. Effective conservation should maintain approximately natural network configurations whenever possible. Location Grand Bank Flemish Cap, Northwest Atlantic Ocean. Methods 3‐D Lagrangian particle tracking was used to model larval connections between known each seven groups benthic invertebrate taxa, previously recognized as indicators VME. Connectivity were constructed effects habitat loss simulated by systematic removal whole patches, determine patch within its respective network. Results The various differed widely contributions connectivity. Each taxon group had both some that, if removed from network, would result major decline connectedness but also several which could be lost with negligible consequences remainder. Main Conclusions While protecting value, wide variation shows that much more critical than others long‐term persistence providing foundation actions.

Language: Английский

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ALPHA AND BETA DIVERSITY PATTERNS OF THE REEF FISHES’ EARLY LIFE STAGES AND CONSERVATION IMPLICATIONS IN THE ABROLHOS BANK, BRAZIL

Regional Studies in Marine Science, Journal Year: 2025, Volume and Issue: 81, P. 104014 - 104014

Published: Jan. 1, 2025

Language: Английский

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