Examination of the link between life stages uncovered the mechanisms by which habitat characteristics affect odonates

Iwai, Noriko; Akasaka, Munemitsu; Kadoya, Taku; Ishida, Shinya; Aoki, Takashi; Higuchi, Shinsuke; Takamura, Noriko

doi:10.1002/ecs2.1930

Cited by 13 publications

(5 citation statements)

References 41 publications

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“…Carvalho & Nessimian, 1999), given that they typically prefer more transparent water. The influence of the physical-chemical parameters of the water on the occurrence of adult zygopterans should be interpreted with caution, however, given that the adult and nymph stages are closely related (Valente-Neto et al, 2015;Mendes et al, 2017;Iwai et al, 2017), which implies that the factors affecting one stage may affect the other by default (Brito et al, 2020). As the present study focused on the adults, then, a more integrated approach would be needed to provide more conclusive insights into these patterns.…”

Section: Discussionmentioning

confidence: 90%

Environmental variables affect the diversity of adult damselflies (Odonata: Zygoptera) in western Amazonia

Brito¹,

Calvão²,

Cunha³

et al. 2021

IJO

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Our study evaluated the effects of environmental variables on the assemblages of the suborder Zygoptera, and tested the hypothesis that environmental variables are more important determinants of the structure of these assemblages than limnological variables in streams. We sampled 17 streams in the Carajás National Forest and tested our hypothesis using a linear regression analysis, with the zygopteran species composition, richness, and abundance as the response variables. Our findings indicate that both limnological and physical variables influence, independently, the characteristics of the zygopteran assemblages. The riparian forest maintains the stability of the environment and provides dispersal corridors, along which the zygopterans can reach alternative, suitable environments. The small scale of this study also implies that the continuity of the vegetation is essential for the dispersal of the zygopterans among different landscapes. The high levels of abundance recorded in the better-preserved environments may reflect the maintenance of specific habitats and resource availability. Riparian forest is crucial to the ecological equilibrium of the stream systems, although further research at a broader spatial scale that focuses on a greater diversity of variables should provide more robust insights into the phenomenon.

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Section: Discussionmentioning

confidence: 90%

Environmental variables affect the diversity of adult damselflies (Odonata: Zygoptera) in western Amazonia

Brito¹,

Calvão²,

Cunha³

et al. 2021

IJO

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show abstract

“…In this study, we focused on aquatic macrophytes because they provide suitable habitats to various animals ( Scheffer, 2004 ; Bilton et al, 2006 ; Santi et al, 2010 ; Iwai et al, 2017 ) and because of their conservation status ( Williams et al, 2004 ). Indeed, about 40% (269 species) of the aquatic macrophytes listed by Kadono (2014) , the most comprehensive guide to Japanese aquatic macrophytes, are now registered as endangered species on the national Red List.…”

Section: Introductionmentioning

confidence: 99%

Landscape- and Local-Scale Actions Are Essential to Conserve Regional Macrophyte Biodiversity

2018

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Regional-scale pond diversity is supported by high variation in community composition. To effectively and efficiently conserve pond regional diversity, it is essential to recognize the community types in a focal region and the scales of the factors influencing the occurrence of respective community types. Based on a flora survey and GIS analysis of 367 ponds in western Japan, we developed a multinomial regression model that describes the relationship between aquatic macrophyte community type (based on cluster analysis) and five environmental factors that differ in the spatial scale at which they operate (i.e., landscape or local scale) and origin (i.e., natural or anthropogenic). A change in topographic configuration resulted in a transition of the community types with high species richness. Increasing urban and agricultural area around ponds resulted in a decrease in species-rich community occurrence; an increase in urban area increased the probability of a pond having no macrophytes, whereas that of paddy field increased the probability of a pond having only a few macrophytes. Pond surface area and proportion of artificial embankment significantly defined the pond community: greater embankment proportions increased the probability of ponds having few or no macrophytes. Our results suggest that conserving regional pond biodiversity will require actions not only at a local scale but also at a sufficiently large spatial scale to cover the full gradient of topographic configurations that influence the macrophyte species composition in ponds.

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“…vertebrates like fishes, annulans, and frogs (Fukumori et al, 2016;Iwai et al, 2017;Natsumeda et al, 2015;Usio et al, 2017). In such studies, most of the taxa studied are sensitive to environmental deterioration, now in progress among farm ponds, and thus they can be indicators of well-conserved waters.…”

mentioning

confidence: 99%

Pond chironomid communities revealed by molecular species delimitation reflect eutrophication

Takamura

Ueno

Kondo

et al. 2021

Ecology and Evolution

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Farm ponds in Japan originally constructed for agricultural irrigation are now at the brink of disappearance not only due to shrinking local agricultural production, but also in order to prevent flooding of the ponds due to abnormally heavy rainfall. They are, however, habitats for endemic aquatic flora and fauna, and thus sources and refuges for aquatic organisms that can also be found in lakes, rivers, and wetlands (Takamura, 2012). They are highly valued in terms of conserving freshwater biodiversity even with the on-going changes.The structure, size, water inflow and outflow, influx of inorganic and organic substances as well as the surrounding landscapes of the ponds have given rise to a wide variety of pond environments. These respective environments are habitats that actually or potentially nurture a unique set of aquatic flora and fauna (Casas et al., 2012;

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Examination of the link between life stages uncovered the mechanisms by which habitat characteristics affect odonates

Cited by 13 publications

References 41 publications

Environmental variables affect the diversity of adult damselflies (Odonata: Zygoptera) in western Amazonia

Environmental variables affect the diversity of adult damselflies (Odonata: Zygoptera) in western Amazonia

Landscape- and Local-Scale Actions Are Essential to Conserve Regional Macrophyte Biodiversity

Pond chironomid communities revealed by molecular species delimitation reflect eutrophication

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