Biotic homogenisation and differentiation as directional change in beta diversity: synthesising driver–response relationships to develop conceptual models across ecosystems

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2023, Volume and Issue: 98(4), P. 1388 - 1423

Published: April 18, 2023

ABSTRACT Biotic homogenisation is defined as decreasing dissimilarity among ecological assemblages sampled within a given spatial area over time. differentiation, in turn, increasing Overall, changes the dissimilarities (termed ‘beta diversity’) an increasingly recognised feature of broader biodiversity change Anthropocene. Empirical evidence biotic and differentiation remains scattered across different ecosystems. Most meta‐analyses quantify prevalence direction beta diversity, rather than attempting to identify underlying drivers such changes. By conceptualising mechanisms that contribute or composition space, environmental managers conservation practitioners can make informed decisions about what interventions may be required sustain predict potential outcomes future disturbances. We systematically reviewed synthesised published empirical for terrestrial, marine, freshwater realms derive conceptual models explain diversity. pursued five key themes our review: ( i ) temporal change; ii disturbance regime; iii connectivity alteration species redistribution; iv habitat v trophic interactions. Our first model highlights how occur function local (alpha) diversity regional (gamma) independently invasions losses due occurrence assemblages. Second, magnitude depends on interaction between variation (patchiness) (synchronicity) events. Third, context redistribution, divergent have dispersal characteristics, associated with also strongly alpha gamma prior invasion. Fourth, positively linked variability, when heterogeneity decreases increases, respectively. Fifth, interactions influence via modification, disease, consumption (trophic dynamics), competition, by altering ecosystem productivity. synthesis multitude cause more less spatially similar (taxonomically, functionally, phylogenetically) through consider studies should aim enhance collective understanding systems clarifying driving focusing only reporting per se .

Language: Английский

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Fishes of the upper rio Paraná basin: diversity, biogeography and conservation

Neotropical Ichthyology, Journal Year: 2024, Volume and Issue: 22(1)

Published: Jan. 1, 2024

Abstract The upper rio Paraná basin drains the most developed and environmentally degraded region in South America: Brazilian southeast. While it is one of well-known Neotropical fish assemblages, also threatened by anthropic activity. Urbanization, deforestation, dam construction, invasive species, water pollution not only reduce living area species but alter our perception its biotic elements. Such changes are so profound pervasive that raise uncertainties about native or non-native status several species. This paper aims to offer a detailed picture diversity historical biogeography fishes basin, which we hope will solid foundation for future conservation policies. We update list analyze geographical distributions, identify biogeographical patterns, emphasizing areas requiring recognition as distinct biotas efforts. Over past 15 years, more than 100 additional have been described recorded, expanding total 341 belonging six orders 30 families, making richest river Brazil outside Amazonian region. Unlike neotropical basins where Characidae dominates, loricariids make up nearly one-fourth Species clades concentrate central while endemics confined peripheral due complex history shared with neighboring basins. Eighteen regions identified, discussing their composition, histories, implications. has 10% fauna ranked endangered present 128 including three hybrids. places major drainage largest number taxa neotropics at same time numerous Existing protected deemed ineffective preserving diverse assemblages fail safeguard majority narrowly-endemic

Language: Английский

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The Use of Barriers to Limit the Spread of Aquatic Invasive Animal Species: A Global Review

Frontiers in Ecology and Evolution, Journal Year: 2021, Volume and Issue: 9

Published: Feb. 9, 2021

Aquatic invasive species (AIS) are one of the principal threats to freshwater biodiversity. Exclusion barriers increasingly being used as a management strategy control spread AIS. However, exclusion can also impact native organisms and their effectiveness is likely be context dependent. We conducted quantitative literature review evaluate use animal AIS in ecosystems worldwide. The aspect was supplemented by case studies that describe some challenges, successes, opportunities for globally. Barriers have been since 1950s AIS, but effort has increasing 2005 (80% studies) an diverse range taxa now targeted wide habitat types. global concentrated North America (74% studies), Australasia (11%), Europe (10%). Physical (e.g., weirs, screens, velocity barriers) most widely (47%), followed electric (27%) chemical (12%). Fish were (86%), crustaceans (10%), molluscs (3%) amphibians (1%). Most moderately successful limiting passage with 86% tested deterring >70% individuals. only 25% evaluated barrier impacts on species, development selective still its infancy. too short (47% < 1 year, 87% 5 years) detect ecological or failed robust before-after-control-impact (BACI) study designs (only 5%). Hence, more effective monitoring required assess long-term tool. Our highlight pressing need many ecoregions, potential become tool situations. design operation must refined deliver fauna, should sparingly part wider integrated strategy.

Language: Английский

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Anthropogenic influences reshape lentic fish diversity: Patterns of homogenization and differentiation across a Mediterranean biodiversity hotspot

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 973, P. 179154 - 179154

Published: March 20, 2025

Freshwater ecosystems are increasingly impacted by human activities, resulting in species invasions and extinctions, disrupting biodiversity ecosystem functions. This study investigates the patterns of taxonomic functional homogenization differentiation fish assemblages within 103 lentic across a Mediterranean hotspot (Greece). We focus on how non-native have altered diversity at both national ecoregional levels while exploring drivers pathways behind these changes. Our analysis combined historical current data, evaluating effects introductions local extinctions distinct freshwater ecoregions. calculated similarities using Jaccard Gower dissimilarity indices employed generalized linear models (GLMs) to assess significance changes over time. Results reveal significant ecosystems, primarily driven introduction widespread alien translocated species. In contrast, was less pronounced, with some regions exhibiting differentiation, including increases richness due ecological traits. Non-native introduced through angling, ornamental trade, unintentional were primary contributors homogenization. The findings highlight prominent regional differences vulnerabilities: mainland ecoregions experienced stronger homogenization, insular differentiation. Additionally, reveals decoupling changes, emphasizing need consider assessments conservation management. research contributes broader understanding reshape functions systems. approach provides useful framework for assessing biotic implications management strategies worldwide.

Language: Английский

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Alien fish fauna of southeastern Brazil: species status, introduction pathways, distribution and impacts

Biological Invasions, Journal Year: 2021, Volume and Issue: 23(10), P. 3021 - 3034

Published: May 17, 2021

Language: Английский

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Tilapia introduction in China: Economic boom in aquaculture versus ecological threats to ecosystems

Reviews in Aquaculture, Journal Year: 2022, Volume and Issue: 15(1), P. 179 - 197

Published: Aug. 12, 2022

Abstract The introduction and use of non‐native species in aquaculture have played a central role the development this economic sector worldwide. Tilapia is one most widely introduced world, China has become largest producer consumer tilapia. While tilapia support provisioning ecosystem services substantial value, invasion also poses potential threats to native fish diversity, ecosystems ultimately sustainable fisheries development. However, knowledge regarding invading pathway, development, benefits ecological impacts such important still limited, especially China. Based on thorough literature review as well field surveys, paper comprehensively presented across range aquatic habitats its industry growth, emphasising In addition, we synthesised negative caused by with global evidences, which will provide excellent lessons management recommendations for other countries Future trends tend indicate an increase number frequency tilapia's China, increasing likelihood environmental impacts. it apparent that tilapias highly profitable activity makes introductions inevitable, therefore, alternative strategies implications are further discussed seek achieve more ecosystem‐friendly aquaculture, reduce risks while maintaining benefits.

Language: Английский

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Non-native fishes in Brazilian freshwaters: identifying biases and gaps in ecological research

Biological Invasions, Journal Year: 2023, Volume and Issue: 25(5), P. 1643 - 1658

Published: Jan. 28, 2023

Language: Английский

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The productivity–stability trade-off in global food systems

Nature Ecology & Evolution, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 3, 2024

Language: Английский

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Preface: aquatic homogenocene—understanding the era of biological re-shuffling in aquatic ecosystems

Hydrobiologia, Journal Year: 2020, Volume and Issue: 847(18), P. 3705 - 3709

Published: Sept. 29, 2020

Language: Английский

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Influence of local environmental factors on the distribution of the invasive species Macrobrachium pantanalense dos Santos, Hayd and Anger, 2013 in a large hydropower reservoir

Biological Invasions, Journal Year: 2025, Volume and Issue: 27(5)

Published: April 23, 2025

Language: Английский

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