Water pollution affects fish community structure and alters evolutionary trajectories of invasive guppies (Poecilia reticulata)

Silva, Guilherme Gomes; Cyubahiro, Eric; Wronski, Torsten; Riesch, Rüdiger; Apio, Ann; Plath, Martin

doi:10.1016/j.scitotenv.2020.138912

Cited by 31 publications

(10 citation statements)

References 92 publications

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“…61 Chemical pollution might also be involved in the micro-evolutionary processes of water organisms. For instance, in 2020, it was suggested by Gomes-Silva et al 62 that the fitness of invasive wild guppies (Poecilia reticulata) living in a river basin of Rwanda may be impaired by local water pollution.…”

Section: East African Communitymentioning

confidence: 99%

Chemical pollution as a driver of biodiversity loss and potential deterioration of ecosystem services in Eastern Africa: A critical review

Cristiano

Giacoma

Carere³

et al. 2021

S. Afr. J. Sci.

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Chemical pollution, i.e. the release of anthropogenic chemical substances into the environment, is a driver of biodiversity loss. Although this issue has been widely investigated in high-income countries of temperate regions, there is a lack of data for tropical areas of middle- or low-income countries, such as those in Eastern Africa. Some of the world’s richest biomes that are affected by multiple pressures, including chemical pollution, are hosted in this macro-region. However, few studies have addressed the impact of the release of anthropogenic chemical pollutants on the biodiversity, and the related potential implications for the deterioration of ecosystem goods and services in this area. A contribution in systemising the scientific literature related to this topic is, therefore, urgently needed. We reviewed studies published from 2001 to 2021, focusing on the chemical pollution impact on Eastern African wildlife. Despite an extensive literature search, we found only 43 papers according to our survey methods. We focused on wildlife inhabiting terrestrial ecosystems and inland waters. According to our search, Kenya and Uganda are the most represented countries accounting for about half of the total number of reviewed articles. Moreover, 67.4% of the studies focus on inland waters. The spread of anthropogenic chemicals into tropical areas, e.g. Eastern Africa, and their effects on living organisms deserve greater attention in research and politics. We report a weak increasing trend in publishing studies addressing this topic that might bode well. The combined effort of science and governments is crucial in improving the management of chemical pollutants in the environment for achieving the goals of biodiversity conservation.

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Section: East African Communitymentioning

confidence: 99%

Chemical pollution as a driver of biodiversity loss and potential deterioration of ecosystem services in Eastern Africa: A critical review

Cristiano

Giacoma

Carere³

et al. 2021

S. Afr. J. Sci.

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“…Other effects include restrictions in habitable areas, changes in the species' interactions (e.g., trophic relationships) in the avoided ecosystems, alterations to migratory patterns, etc. Although in situ observations of the relation between contamination and restrictions in the habitat use are scarce, some studies have evidenced the effects of contamination on the spatial distribution of fish [28,[119][120][121].…”

Section: Spatial Displacement: Extinction At the Local Levelmentioning

confidence: 99%

Not Only Toxic but Repellent: What Can Organisms’ Responses Tell Us about Contamination and What Are the Ecological Consequences When They Flee from an Environment?

Araújo

Laissaoui

Silva

et al. 2020

Toxics

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The ability of aquatic organisms to sense the surrounding environment chemically and interpret such signals correctly is crucial for their ecological niche and survival. Although it is an oversimplification of the ecological interactions, we could consider that a significant part of the decisions taken by organisms are, to some extent, chemically driven. Accordingly, chemical contamination might interfere in the way organisms behave and interact with the environment. Just as any environmental factor, contamination can make a habitat less attractive or even unsuitable to accommodate life, conditioning to some degree the decision of organisms to stay in, or move from, an ecosystem. If we consider that contamination is not always spatially homogeneous and that many organisms can avoid it, the ability of contaminants to repel organisms should also be of concern. Thus, in this critical review, we have discussed the dual role of contamination: toxicity (disruption of the physiological and behavioral homeostasis) vs. repellency (contamination-driven changes in spatial distribution/habitat selection). The discussion is centered on methodologies (forced exposure against non-forced multi-compartmented exposure systems) and conceptual improvements (individual stress due to the toxic effects caused by a continuous exposure against contamination-driven spatial distribution). Finally, we propose an approach in which Stress and Landscape Ecology could be integrated with each other to improve our understanding of the threat contaminants represent to aquatic ecosystems.

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“…Complementarily, biodiversity and ecosystem integrity are being degraded around the world [16,17]. Over the past decades, freshwater ecosystems have become increasingly threatened by various stressors, such as pollution, land use changes, dam construction and water extraction [18][19][20]. As a result, health assessments of freshwater ecosystems are becoming widespread [21]; one part of this evaluation is a habitat assessment.…”

Section: Introductionmentioning

confidence: 99%

Classification and Assessment Methods for Mountain Channel Habitats in the Chishui River Basin, China

Liu

Xia

et al. 2022

Water

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Mountain channels have received relatively little study compared to lowland rivers due to their complicated fluvial geomorphology and inconvenient traffic. Classification schemes and habitat assessments in mountain channels should be strengthened to provide a scientific basis for river ecological restoration. Therefore, we tried to simplify the habitat assessment of mountain channels using a suitable habitat classification scheme based on high-resolution satellite imagery. We used China’s Chishui River basin because it is a typical mountain river system. Five parameters (stream order, elevation, slope, sinuosity and river network density) and 150 sites were used for habitat classification. In addition, we recorded 20 metrics in four categories (water environmental status, river morphology, riparian zone and human disturbance). Our results identified a total of 40 representative sampling sections belonging to six habitat types that were useful for habitat assessment across the Chishui River basin. The basin was given a mean comprehensive habitat quality index (CHQI) score of 130.66 ± 24.14 and classified under the status “good.” However, the headwaters, Tongmin River, Tongzi River and Xishui River were disturbed by various human activities. We conclude that the process of developing and simplifying our habitat assessment systems can be regarded as a reference for biomonitoring in other mountain river systems.

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Water pollution affects fish community structure and alters evolutionary trajectories of invasive guppies (Poecilia reticulata)

Abstract: Water pollution affects fish community structure and alters evolutionary trajectories of invasive guppies (Poecilia reticulata).

Cited by 31 publications

References 92 publications

Chemical pollution as a driver of biodiversity loss and potential deterioration of ecosystem services in Eastern Africa: A critical review

Chemical pollution as a driver of biodiversity loss and potential deterioration of ecosystem services in Eastern Africa: A critical review

Not Only Toxic but Repellent: What Can Organisms’ Responses Tell Us about Contamination and What Are the Ecological Consequences When They Flee from an Environment?

Classification and Assessment Methods for Mountain Channel Habitats in the Chishui River Basin, China

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