Ostracod (Crustacea) colonization of a native and a non-native macrophyte species of Hydrocharitaceae in the Upper Paraná floodplain (Brazil): an experimental evaluation

Mormul, Roger Paulo; Thomaz, Sidinei Magela; Higuti, Janet; Martens, Koen

doi:10.1007/s10750-010-0112-3

Cited by 46 publications

(37 citation statements)

References 47 publications

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“…Similar results have been documented from other Hydrilla dominated areas such as Lake Tanganyika (Copeland et al, 2012), Parana River (Mormul, Thomaz, Higuti, & Martens, 2010) and Lake Tutira, New Zealand (Hofstra & Clayton, 2014).…”

Section: Habitat Quality For Macroinvertebratessupporting

confidence: 89%

Regime shift in the littoral ecosystem of volcanic Lake Atitlán in Central America: combined role of stochastic event and invasive plant species

et al. 2018

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Different functional groups of macrophytes vary in their impact on aquatic ecosystem structure and processes. The introduction of new species with different growth form, combined with a stochastic event, may have serious and irreversible consequences on lake functioning. Our goals were to document and explain physical, chemical, metabolic and biotic changes in the littoral zones of a volcanic lake before and following two coinciding events: invasion by a submersed macrophyte, Hydrilla verticillata (Hydrocharitaceae), followed by a rapid increase in the lake water level (>2.5 m). We recorded plant biomass, plant tissue C:N:P stoichiometry, macroinvertebrates, water characteristics data along transects through littoral zones, and measured gas emission in controlled mesocosms and in the lake. The native emergent species, Schoenoplectus californicus (Cyperaceae), was generally not able to survive such a rapid water level increase, and Hydrilla spread and formed dense mats further preventing Schoenoplectus regeneration. The impact of another introduced species, the free‐floating Eichhornia crassipes (Pontederiaceae), was more localised, despite its much longer presence at the lake. Although the three species had comparable standing biomass, the two invader species had lower C:N:P ratios than Schoenoplectus, resulting in faster decomposition rates and indicating potential shifts in nutrient cycling within the ecosystem. The oxygen profile of the water column was altered by the non‐native species in a significantly different manner: in Eichhornia, the saturation concentrations dropped down to 30%–50% of dissolved oxygen, while oxygen supersaturation was recorded in Hydrilla. Both Schoenoplectus and Eichhornia patches exhibited comparable carbon dioxide (CO2) fluxes, sequestering 230 and 300 mg CO2 m−2 hr−1, respectively, during the day and emitting 250 and 200 mg CO2 m−2 hr−1, respectively, during the night. Contrary to these two species, Hydrilla patches sequestered CO2 during the day (34 mg CO2 m−2 hr−1) and night (44 mg CO2 m−2 hr−1). The invasive species maintained a richer community of macroinvertebrates compared to several native species (excluding Schoenoplectus), both in taxa diversity and in numbers of individuals. When the results are considered in the regional context, an increase in nutrient supply could lead to the dominance of free‐floating plants. We discussed management options more broadly considering the negative impacts of introduced species balanced against their beneficial effects, in the context of environmental changes.

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Section: Habitat Quality For Macroinvertebratessupporting

confidence: 89%

Regime shift in the littoral ecosystem of volcanic Lake Atitlán in Central America: combined role of stochastic event and invasive plant species

et al. 2018

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“…These macroinvertebrates use macrophytes as a substrate for spawning and sites of protection against predators and feeding (Mormul et al, 2010), ingesting algae and detritus through water filtration (Gooderham and Tsyrlin, 2009).…”

Section: Discussionmentioning

confidence: 99%

Aquatic macroinvertebrates associated with Eichhornia azurea (Swartz) Kunth and relationships with abiotic factors in marginal lentic ecosystems (São Paulo, Brazil)

Silva

Henry

2013

Braz. J. Biol.

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Marginal lakes are characterised by their having high biological diversity due to the presence of aquatic macrophytes in their coastal zones, providing habitats for refuge and food for animal community members. Among the fauna components associated with macrophytes, aquatic macroinvertebrates are important because they are an energy source for predators and fish. In six lakes and two different seasons (March and August 2009), the ecological attributes of aquatic macroinvertebrate community associated with Eichhornia azurea were compared and the controlling environmental factors were identified. Since the attributes of macroinvertebrate community are strictly associated with abiotic variables of each distinct habitat, our hypothesis was that each site associated with the same floating aquatic macrophyte (E. azurea) should have a typical composition and density of organisms. We identified 50 taxa of macroinvertebrates, with greater taxa richness for aquatic insects (37 taxa) divided into eight orders; the order Diptera being the most abundant in the two study periods. On the other hand, higher values of total taxa richness were recorded in August. Dissolved oxygen and pH presented the greatest number of significant positive correlations with the different taxa. The animals most frequently collected in the six lakes in March and August 2009 were Hirudinea, Oligochaeta, Hydrachnidae, Conchostraca, Ostracoda, Noteridae, Ceratopogonidae, Chironomidae, Culicidae, Caenidae, Pleidae, Aeshnidae, Libellulidae, Coenagrionidae and Nematoda. Only densities of Trichoptera, Ostracoda and Conchostraca presented the highest significant differences between lakes in both study periods and considering the composition of macroinvertebrates no significant differences were registered for macroinvertebrate composition.Keywords: phytofauna, aquatic macrophyte, marginal lakes. Macroinvertebrados aquáticos associados à Eichhornia azurea (Swartz) Kunth e suas relações com as variáveis abióticas em ecossistemas lênticos marginais (São Paulo, Brasil) ResumoLagoas marginais são caracterizadas por apresentar elevada diversidade biológica, devido à presença de macrófitas aquáticas nas suas zonas litorâneas, constituindo habitats de refúgio e alimento para comunidades associadas. Entre os seus integrantes, destacam-se os macroinvertebrados aquáticos, fonte de energia para predadores e ictiofauna. Em seis lagoas e em duas épocas distintas (março e agosto de 2009), os atributos ecológicos da comunidade de macroinvertebrados aquáticos associados à Eichhornia azurea foram comparados, identificando-se os fatores ambientais controladores. Uma vez que os atributos da comunidade de macroinvertebrados estão estritamente associados às variáveis abióticas de cada habitat distinto, nossa hipótese era de que cada local com a presença da mesma macrófita aquática flutuante (E. azurea) deveria ter uma típica composição e densidade de organismos. Foram identificados 50 taxa de macroinvertebrados, com maior riqueza registrada para os insetos aquáticos (37 ...

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“…Entre os crustáceos de água doce, cladóceros e copépodos têm sido relativamente bem explorados em nosso país, tanto em termos ecológicos como em estudos sobre taxonomia. Por outro lado, a despeito de os ostrácodes serem abundantes na maioria dos corpos de água, ainda existem poucos estudos em ambientes aquáticos continentais brasileiros (Würdig & Freitas, 1988;Higuti, 2006;Higuti et al, 2007Higuti et al, , 2009bHiguti et al, , 2010Miranda, 2008;Mormul et al, 2010;Pereira, 2010;Matsuda, 2011;Chaves 2012;Matsuda et al 2015a,b;Higuti & Martens, 2016).…”

Section: Methodsunclassified

Checklist de ostrácodes (Crustacea, Ostracoda) dulcícolas do Pantanal Sul Mato-grossense, Brasil

Higuti

Roche

Martens

2017

Iheringia, Sér. Zool.

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ABSTRACT. Checklist of freshwater ostracods (Crustacea, Ostracoda) of the Pantanal of Mato Grosso do Sul, Brazil. Nowadays there are about 2,000 species of non-marine Ostracoda described in diverse aquatic environments in the world, of which 117 species from 37 genera are known in Brazil. The present survey of ostracods of the Pantanal of the state of Mato Grosso do Sul, recorded 35 species belonging to the families Cyprididae, Candonidae, Limnocytheridae and Darwinulidae. The ostracod fauna of Brazil is still poorly known and the ostracod biodiversity from several habitats (e.g. interstitial) remains unknown. In this sense, there is a great probability to fi nd new records and new taxa of ostracods in the Pantanal, as well as throughout Brazil.KEYWORDS. Crustaceans, fl oodplain, taxonomy, Biota-MS Program.RESUMO. Atualmente existem cerca de 2.000 espécies de Ostracoda dulcícolas descritas em diversos ambientes aquáticos do mundo, das quais cerca de 117 espécies em aproximadamente 37 gêneros são conhecidas no Brasil. O presente levantamento de ostrácodes do Pantanal Sul Mato-grossense, registrou 35 espécies pertencentes às famílias Cyprididae, Candonidae, Limnocytheridae e Darwinulidae. A fauna de ostrácodes do Brasil ainda é pouco conhecida e a biodiversidade de ostrácodes de vários habitats (por exemplo, instersticial) ainda permanecem desconhecidos. Neste sentido, existe grande probabilidade de se encontrar novos registros e novos táxons de ostrácodes no Pantanal, assim como em todo território brasileiro.PALAVRAS-CHAVE. Crustáceos, planície de inundação, taxonomia, Programa Biota-MS.O Pantanal mato-grossense é uma das maiores áreas úmidas contínuas do planeta, um bioma único qualifi cado pela alta produtividade biológica que se refl ete na elevada abundância da vida selvagem. A sua importância para a conservação da biodiversidade aquática e para a manutenção das funções do ecossistema aquático é amplamente reconhecida, em virtude da criação da Reserva da Biosfera e Patrimônio da Humanidade. Apesar deste grande valor sócio-econômico e científi co, bem como as evidências de impactos antropogênicos crescentes (Ferreira et al., 1994;Por, 2000;Swarts, 2000), ainda existem várias lacunas sobre o conhecimento da biodiversidade de diversas comunidades biológicas, entre as comunidades aquáticas destacam-se os ostrácodes.Os ostrácodes são pequenos crustáceos, com comprimento variando de 0,3 a 3 mm, caracterizados por apresentar uma carapaça bivalvada que engloba totalmente o corpo e os apêndices (Horne et al., 2002). São muito comuns nos corpos de água interiores, e abundantes nos bentos e associados à vegetação emersas e submersas, mas também ocorrem em ambientes marinhos, intersticiais e ainda em ambientes terrestres e semiterrestres. Os ostrácodes são interessantes objetos de estudo da mudança da biodiversidade, pois suas valvas calcifi cadas podem formar microfósseis abundantes em sedimentos de lagoas. O estrato de sedimento pode ser analisado e alterações em densidades e vários outros aspectos da diversidade podem...

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Ostracod (Crustacea) colonization of a native and a non-native macrophyte species of Hydrocharitaceae in the Upper Paraná floodplain (Brazil): an experimental evaluation

Cited by 46 publications

References 47 publications

Regime shift in the littoral ecosystem of volcanic Lake Atitlán in Central America: combined role of stochastic event and invasive plant species

Regime shift in the littoral ecosystem of volcanic Lake Atitlán in Central America: combined role of stochastic event and invasive plant species

Aquatic macroinvertebrates associated with Eichhornia azurea (Swartz) Kunth and relationships with abiotic factors in marginal lentic ecosystems (São Paulo, Brazil)

Checklist de ostrácodes (Crustacea, Ostracoda) dulcícolas do Pantanal Sul Mato-grossense, Brasil

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