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Gibbons, Leah K.; Reed, J. Michael; Chew, Frances S.

doi:10.1023/a:1015754015603

Cited by 27 publications

(5 citation statements)

References 28 publications

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“…No local characteristics of ponds seemed to clearly influence damselfly species richness. They probably compete much less for territories, and their establishment on a pond would depend mainly on their ecological requirements (Gibbons, Reed, & Chew, 2002). As expected, larger ponds attract more dragonfly species and have higher larvae abundances.…”

Section: Discussionsupporting

confidence: 52%

Determinant landscape‐scale factors on pond odonate assemblages

et al. 2018

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Species assemblages are related to environmental factors acting at different landscape scales. Local habitat heterogeneity also contributes to maintain the regional species pool. Understanding factors determining species presence is therefore crucial for formulation of successful conservation and management strategies. Odonates can reveal much about patterns of species assemblages since their presence at a site reflects both their dispersal ability and life cycle constraints. Odonate assemblages were studied at 31 ponds located in three different landscapes: forest, urban and field. The impact of pond geographical distribution and their local characteristics (i.e., vegetation, suspended matter, freshwater macroinvertebrates, pond area and temporariness) on odonate composition, species richness and larval presence were studied. According to their intrinsic requirements, damselfly and dragonfly presence on ponds depended on local characteristics. Some species of the two orders were only detected in field or forest ponds. Moreover, some species were never detected in urban ponds. Differences in odonate assemblages were mainly related to vegetation, freshwater macroinvertebrates and pond area. Species richness was related to predator abundance and pond area, especially for dragonflies. The presence and abundance of odonate larvae were both related to aquatic vegetation, and to contrasted aquatic variables of ponds. Therefore, this study confirms that vegetation within and around ponds determines odonate presence. Interestingly, in a pond, species detected at the adult stage were not always detected at the larval stage, highlighting the need to really consider both parts of the lifecycle when studying odonate assemblages. Diversity of local habitats within and around ponds depends strongly on the surrounding landscape and influences the assembly of odonates. Forest and field ponds presented particularly dissimilar species assemblages. Urban ponds had no specific environmental habitats compared to the other contexts. Species present on these ponds are rather generalist and able to support human disturbances. Overall, this study confirms that pond heterogeneity may be a key factor in maintaining the regional pool of odonate species.

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Section: Discussionsupporting

confidence: 52%

Determinant landscape‐scale factors on pond odonate assemblages

et al. 2018

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“…Rather than facilitation, it seems more likely that the positive association is because E. viridulum is differentially establishing in sites of high quality for resident Odonata and thus where historically resident species are persisting well (Balzan, 2012; Gibbons et al, 2002). E. viridulum may also be unlikely to establish in sites where resident species were declining.…”

Section: Discussionmentioning

confidence: 99%

Associations between a range‐shifting damselfly (Erythromma viridulum) and the UK's resident Odonata suggest habitat sharing is more important than antagonism

Cranston

Isaac

Early

2023

Insect Conserv Diversity

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Species shifting their ranges under climate change are a conservation dilemma. Range‐shifters may be threatened by climate change in their historic range. However, range‐shifters are likely to be generalist opportunists, which could mean they could harm aspects of biodiversity in their new ecosystems. Therefore, we need approaches to rapidly assess how range‐shifters may integrate into the community of historically resident species. The small red‐eyed damselfly (Erythromma viridulum) has shifted into the United Kingdom since 1999 and may affect resident Odonata via intraguild predation. We asked whether the damselfly's arrival is associated with a decline in resident Odonata. We harnessed the British Dragonfly Society's dataset, using records from 49,788 site visits between 2000 and 2015 to construct dynamic species occupancy models for 17 resident UK Odonata. We estimated the potential effect of E. viridulum presence on the probability that each species would persist at a given site, while controlling for potential effects of climate and recording effort. On average, dragonflies (Anisoptera) persisted more frequently at sites where E. viridulum had established, while damselflies (Zygoptera) showed no change in persistence. Nevertheless, two resident damselflies, including E. viridulum's congener, disappeared more frequently when the range‐shifter established. We suggest that E. viridulum poses minimal risk to most UK resident Odonata. Rather, E. viridulum may be differentially establishing in areas with good habitat quality, where many species of historically resident Odonata are also found. Therefore, high quality, biodiverse sites may become home to increasing numbers of range‐shifters in future. Our approach permits rapid detection of how range‐shifters are integrating into resident biota.

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“…We found that A. amazili can inhabit both shallow and deeper rock pools, possibly enabled by its more rapid larval development and broader environmental tolerance than other aeshnid species (Paulson, 2011). Finally, the firetail damselfly T. simulata was quantitatively restricted to SP rock pools with aquatic vegetation that they use as a substrate for oviposition and shelter for the growing larvae (Gibbons et al, 2002; Purse & Thompson, 2009). We expected that Aeshnidae and Coenagrionidae would be restricted to SP pools, but that was the case only for the coenagrionid, T. simulata .…”

Section: Discussionmentioning

confidence: 99%

Conductivity and water level modulate developmental plasticity and explain distribution patterns in a diverse neotropical Odonata assemblage

et al. 2023

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Developmental plasticity can help organisms to survive in temporally variable environments. However, it is not well understood how variation in life history plasticity helps species coexist in heterogeneous environments. Here, we investigate the extent to which life‐history plasticity explains species distributions in a diverse assemblage of odonates in a tropical freshwater rock pool system characterized by substantial variation in pond permanence. Some dragonflies and damselflies (Odonata) can accelerate their development to leave the water before their habitat dries. However, how they sense habitat drying is poorly understood. Here, we experimentally tested the extent to which elevated concentrations of salts in water or reductions in water level can be used as cues for developmental acceleration in a neotropical Odonata assemblage from granite rock pools. Libellulidae dragonflies were found along the permanence gradient and accelerated their growth in response to elevated dissolved salts (measured as conductivity). Anax amazili (Aeshnidae) was also found in all environments and did the same in response to lower water levels. In turn, larvae of the damselfly Telebasis simulata (Coenagrionidae) were restricted to deeper long‐lived pools and did not respond to the tested cues. Differentiation in life‐history strategies can contribute to niche differentiation in this diverse predator assemblage. Developmental plasticity triggered by different cues helps odonates avoid mortality and exploit short‐lived habitats. The global acceleration of freshwater salinisation due to human activities might disrupt the delicate links between low levels of dissolved salts and life‐history responses and represent a significant threat to these ecosystems and their biodiversity.

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Untitled

Cited by 27 publications

References 28 publications

Determinant landscape‐scale factors on pond odonate assemblages

Determinant landscape‐scale factors on pond odonate assemblages

Associations between a range‐shifting damselfly (Erythromma viridulum) and the UK's resident Odonata suggest habitat sharing is more important than antagonism

Conductivity and water level modulate developmental plasticity and explain distribution patterns in a diverse neotropical Odonata assemblage

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