Environmental determination of dragonfly assemblage in aquaculture ponds

Marco, Paulo De; Latini, Anderson Oliveira; Reis, Alice

doi:10.1046/j.1365-2109.1999.00338.x

Cited by 23 publications

(19 citation statements)

References 33 publications

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“…Some dragonfly species are known to exhibit different vulnerability to predation depending on body size and flexible antipredatory behavior, allowing them to coexist with fish (Johnson 1991; McPeek 1998; Johansson 2000; Hopper 2001; McCauley 2008). Indeed, Orthemis larvae was one of the smallest benthic predators we had in our experiment (around 20 times smaller than Pantala ; see appendix 5) and it has been reported to occur in high abundance in aquaculture ponds with no vegetation (Marco et al 1999). It is thus possible that higher availability of other suitable prey ( i.e.…”

Section: Discussionmentioning

confidence: 90%

Top predator introduction changes the effects of spatial isolation on freshwater community structure

Pelinson

Leibold

Schiesari

2019

Preprint

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1Spatial isolation can differentially affect the distribution of predators and thus affect lower 2 trophic levels by resulting in trophic cascades. Similarly, the introduction of top predators into 3 isolated ecosystems can cause the same cascading effects because they mostly prey upon larger 4 frequently predatory taxa, indirectly benefiting consumers. Here we experimentally tested 5 whether spatial isolation can affect the outcome and strength of the cascading effects caused by 6 fish on macroinvertebrate community structure. We found that fish did reduce the abundance of 7 predators but had no effect on consumers. Spatial isolation, however, did cause trophic cascades, 8 but only in the absence of fish. We believe this happened because fish also preyed upon 9 consumers when they increase in abundance. Additionally, and in contrast with simple 10 theoretical expectations for metacommunities, we found that the difference between ponds with 11 and without fish increased with isolation, probably because fish dampened the cascading effects 12 of spatial isolation. 13

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Section: Discussionmentioning

confidence: 90%

Top predator introduction changes the effects of spatial isolation on freshwater community structure

Pelinson

Leibold

Schiesari

2019

Preprint

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“…Our study suggests that competitive exclusion will result in lower plant species diversity in emergent vegetation wetlands than in other wetlands. Since macroinvertebrate communities are affected by vegetation composition (De Marco, Latini & Reis, 1999;Declerck et al, 2005;Irfanullah & Moss, 2005;Van de Meutter, Cottenie & De Meester, 2008), we might have expected macroinvertebrate diversity also to become successively lower in emergent vegetation wetlands compared to other wetlands. This was not the case, however, perhaps because the experiment was too short for effects of lower plant diversity on macroinvertebrate diversity to become evident.…”

Section: Discussionmentioning

confidence: 99%

Effects of vegetation state on biodiversity and nitrogen retention in created wetlands: a test of the biodiversity–ecosystem functioning hypothesis

Weisner

Thiere

2010

Freshwater Biology

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1. Nitrogen retention in wetlands provides an example of an ecosystem function that is desired by human society, and is a rationale for the creation of wetlands to decrease nitrogen fluxes from nitrate-loaded river catchments to coastal waters.2. Here, we tested the impact of different vegetation states on species diversity and nitrogen retention during 4 years in surface-flow wetlands receiving nitrate-rich water. Tall emergent vegetation or submerged vegetation was introduced to six experimental wetlands each and six wetlands were left as unplanted controls for free development of vegetation. This resulted in three vegetation states dominated by emergent vegetation, by a mixture of submerged vegetation and filamentous green algae or by filamentous green algae. 3. Species diversity (species richness and Shannon diversity) of plants was initially lowest in free development wetlands, but during the study became lower in the emergent vegetation wetlands than in the other wetlands. Diversity of macroinvertebrates was initially lower in the submerged vegetation wetlands than in the other wetlands, but this difference disappeared during the study. Nitrogen retention was consistently higher in emergent vegetation wetlands than in the other wetlands throughout the study. 4. We conclude that plant diversity in wetlands dominated by tall emergent vegetation gradually became lower than in other wetlands, due to dominant species competitively excluding other plants. However, these wetlands were more efficient at removing nitrogen than those dominated by filamentous algae or submerged macrophytes. 5. Management of wetlands often aims to decrease the dominance of tall emergent vegetation for the benefit of plant species diversity and habitat heterogeneity. Our results demonstrate a biodiversity benefit, but also show that this strategy may decrease the ability of wetlands to remove nitrogen. In this case, there is no support for the hypothesis that biodiversity enhances ecosystem function.

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“…This species showed a characteristic behaviour of courtship before copula and the female always oviposit in the territory defended by the male (Johannsson 1978). Intermediary and later larval instars of P. mooma are bottom-dwellers and do not live on vegetation (De Marco et al 1999). It is possible that the first instar of larval P. mooma gains protection against its predators in the macrophytes, explaining why female select vegetation sites to oviposit.…”

Section: Discussionmentioning

confidence: 99%

Cues for territory choice in two tropical dragonflies

Marco¹,

Resende²

2004

Neotrop. Entomol.

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Critérios Para a Escolha de Territórios em Duas Libélulas TropicaisRESUMO -A classificação dos sistemas de acasalamento em Odonata geralmente baseia-se na habilidade dos machos em controlar o acesso das fêmeas aos recursos necessários à postura dos ovos. O objetivo deste artigo foi determinar os critérios de seleção de locais para a defesa de territórios para machos das espécies Perithemis mooma Kirby e Orthemis discolor (Burmeister) (Libellulidae), em Viçosa, controlando a disponibilidade de poleiros e de vegetação aquática. Machos de P. mooma defenderam territórios com vegetação e seus critérios de escolha devem estar relacionados com a oferta de recursos para a postura dos ovos para fêmeas. Machos de O. discolor defenderam territórios em locais com poleiros altos e essa escolha talvez esteja relacionada à possibilidade de visualizar rapidamente qualquer fêmea que se aproxime para copular. A interação com outra espécie de Libellulidae mais ativa e agressiva, Planiplax phoenicura (Ris), alterou a preferência dos machos de O. discolor, o que deixa clara a importância da composição da comunidade e das interações na seleção de microhábitats. PALAVRAS-CHAVE: Odonata, comportamento, acasalamento, Perithemis mooma, Orthemis discolorABSTRACT -Classifications in mate systems of Odonata are generally based in the male ability to control the female access to oviposition resources. In this paper we discuss the criteria for male territory selection in the dragonflies Perithemis mooma Kirby and Orthemis discolor (Burmeister) (Libellulidae), in Viçosa, Brazil, controlling the availability of perches and aquatic vegetation. P. mooma males defended territories with vegetation and thus their choice was probably related to the oviposition resource of the females. O. discolor males preferred sites with tall perches, possibly because their choice was related to a mate-seeking resource. Interactions with another libellulid more active and aggressive, Planiplax phoenicura (Ris), changed the preference of O. discolor males to vegetated areas highlighting the influence of community composition and interactions on territorial site selection.

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Environmental determination of dragonfly assemblage in aquaculture ponds

Cited by 23 publications

References 33 publications

Top predator introduction changes the effects of spatial isolation on freshwater community structure

Top predator introduction changes the effects of spatial isolation on freshwater community structure

Effects of vegetation state on biodiversity and nitrogen retention in created wetlands: a test of the biodiversity–ecosystem functioning hypothesis

Cues for territory choice in two tropical dragonflies

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