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Fanton H, Affre L, Franquet E, Bertrand C, Cavalli L, Dumas E, Guiller C, Kaldonski N, Meineri E, Mutillod C, Oursel B, Pavon D, Thorel M, Tatoni T, Fayolle S. Heavy ionic pollution disrupts assemblages of algae, macroinvertebrates and riparian vegetation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 331:121791. [PMID: 37201567 DOI: 10.1016/j.envpol.2023.121791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 05/04/2023] [Accepted: 05/07/2023] [Indexed: 05/20/2023]
Abstract
Urban streams display consistent ecological symptoms that commonly express degraded biological, physical, and chemical conditions: the urban stream syndrome (USS). Changes linked to the USS result in consistent declines in the abundance and richness of algae, invertebrates, and riparian vegetation. In this paper, we assessed the impacts of extreme ionic pollution from an industrial effluent in an urban stream. We studied the community composition of benthic algae and benthic invertebrates and the indicator traits of riparian vegetation. The dominant pool of benthic algae, benthic invertebrates and riparian species were considered as euryece. However, ionic pollution impacted these three biotic compartments' communities, disrupting these tolerant species assemblages. Indeed, after the effluent, we observed the higher occurrence of conductivity-tolerant benthic taxa, like Nitzschia palea or Potamopyrgus antipodarum and plant species reflecting nitrogen and salt contents in soils. Providing insights into organisms' responses and resistance to heavy ionic pollution, this study sheds light on how industrial environmental perturbations could alter the ecology of freshwater aquatic biodiversity and riparian vegetation.
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Affiliation(s)
- Hadrien Fanton
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France.
| | - Laurence Affre
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| | - Evelyne Franquet
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| | - Céline Bertrand
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| | - Laurent Cavalli
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| | - Estelle Dumas
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| | - Clémence Guiller
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| | - Nicolas Kaldonski
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| | - Eric Meineri
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| | | | - Benjamin Oursel
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| | - Daniel Pavon
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| | - Maxine Thorel
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| | - Thierry Tatoni
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
| | - Stéphanie Fayolle
- IMBE, Aix Marseille Univ, Avignon Université, CNRS, IRD, Marseille, France
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Hall MD, Vettiger A, Ebert D. Interactions between environmental stressors: the influence of salinity on host-parasite interactions between Daphnia magna and Pasteuria ramosa. Oecologia 2012; 171:789-96. [PMID: 23001624 DOI: 10.1007/s00442-012-2452-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Accepted: 08/24/2012] [Indexed: 11/26/2022]
Abstract
Interactions between environmental stressors play an important role in shaping the health of an organism. This is particularly true in terms of the prevalence and severity of infectious disease, as stressors in combination will not always act to simply decrease the immune function of a host, but may instead interact to compound or even oppose the influence of parasitism on the health of an organism. Here, we explore the impact of environmental stress on host-parasite interactions using the water flea Daphnia magna and it is obligate parasite Pasteuria ramosa. Utilising an ecologically relevant stressor, we focus on the combined effect of salinity and P. ramosa on the fecundity and survival of the host, as well as on patterns of infectivity and the proliferation of the parasite. We show that in the absence of the parasite, host fecundity and survival was highest in the low salinity treatments. Once a parasite was introduced into the environment, however, salinity and parasitism acted antagonistically to influence both host survival and fecundity, and these patterns of disease were unrelated to infection rates or parasite spore loads. By summarising the form of interactions found in the broader Daphnia literature, we highlight how the combined effect of stress and parasitism will vary with the type of stressor, the trait used to describe the health of Daphnia and the host-parasite combination under observation. Our results highlight how the context-dependent nature of interactions between stress and parasitism inevitably complicates the link between environmental factors and the prevalence and severity of disease.
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Affiliation(s)
- Matthew D Hall
- Zoologisches Institut, Evolutionsbiologie, University of Basel, Basel, Switzerland.
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