Lotic communities of two small temporary karstic stream systems (East Westphalia, Germany) along a longitudinal gradient of hydrological intermittency

Meyer, Alexander; Meyer, Elisabeth I.; Meyer, Christina

doi:10.1016/s0075-9511(03)80022-1

Cited by 36 publications

(35 citation statements)

References 12 publications

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“…Karst spring discharges reflect periods of poor or abundant precipitations due to specific recharge conditions and the locally prevalent climate regime (Bonacci, 2015;Fiorillo et al, 2015). In such conditions streamflow regime is recognized as the principal variable affecting the success and distribution of aquatic biota (Meyer and Meyer, 2000;Meyer et al, 2003;Konrad et al, 2008). Limited knowledge of the effects of temporary seasonal drying of karst springs on stream biota introduces numerous questions when comparing biological integrity of these specific habitats to perennially flowing streams (Reiss and Chifflard, 2015).…”

Section: Introductionmentioning

confidence: 99%

Microbial mats as shelter microhabitat for amphipods in an intermittent karstic spring

Žutinić

Petrić

Gottstein

et al. 2018

Knowl. Manag. Aquat. Ecosyst.

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-Microbial mats represent complex communities where cyanobacteria and diatoms as key organisms provide shelter for diverse assemblages of aquatic invertebrates, like the small stygophilous amphipod Synurella ambulans. Studies addressing such communities in the karst springs have rarely examined springheads, and have ignored intermittent springs. During high flow conditions the stygophilic crustaceans are flushed to the surface of a temporary stream Krčić where microbial mats prevent their drift and enables their successful retreat into underground in the periods of drought. The objective of this study was to characterize the microbial mat community of the Krčić Spring as a shelter for S. ambulans during strong current and high water level. Representative samples for diatom and cyanobacterial species identification and composition, as well as the fresh mat material for potential animal activity and cyanobacterial phylogenetic analysis were collected. The most dominant diatom was Achnanthidium minutissimum, whilst Fragilaria capucina, Meridion circulare, Navicula cryptocephala and Nitzschia palea had abundance greater than 0.5%. Morphological observations of cyanobacteria revealed that Phormidium favosum was the most dominant, with Hydrocoleum muscicola as a subdominant. Cyanobacterial phylogenetic relationship revealed two distinct clusters: (i) "Phormidium cluster", confirming morphological observations in both winter and spring samples, and (ii) "Wilmottia cluster", a first report for Croatia and found exclusively in the winter sample. Laboratory observations revealed a small stygophilic amphipod S. ambulans, hiding and feeding inside the pockets of fresh microbial mat. The intermittent Krčić Spring as a predator-free and competitor-free ecosystem provides a spatiotemporal conformity between microbial mat and stygophilous amphipod.Keywords: Microbial mat / cyanobacteria / diatoms / amphipods / karstic spring Résumé -Le tapis microbien comme microhabitat refuge pour les amphipodes dans une source karstique intermittente. Le tapis microbien représente des communautés complexes où les cyanobactéries et les diatomées, en tant qu'organismes clés, abritent divers assemblages d'invertébrés aquatiques, comme les petits amphipodes stygophiles Synurella ambulans. Les études portant sur ces communautés dans les sources karstiques ont rarement examiné ces têtes de ruisseaux et ont ignoré les sources intermittentes. Dans les conditions d'écoulement fort, les crustacés stygophiles sont chassés à la surface d'un ruisseau temporaire Krčić où les tapis microbiens empêchent leur dérive et permettent leur retrait dans le sous-sol en période de sécheresse. L'objectif de cette étude était de caractériser la communauté du tapis microbien de la source Krčić comme abri pour S. ambulans lors de forts courants et de niveaux d'eau élevés. La diatomée la plus dominante était Achnanthidium minutissimum, tandis que Fragilaria capucina, Meridion circulare, Navicula cryptocephala et Nitzschia palea avaient une abondance supérieure à ...

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Section: Introductionmentioning

confidence: 99%

Microbial mats as shelter microhabitat for amphipods in an intermittent karstic spring

Žutinić

Petrić

Gottstein

et al. 2018

Knowl. Manag. Aquat. Ecosyst.

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“…Studies in United Kingdom (Smith et al 2003), Switzerland (Ruegg & Robinson 2004), Germany (Meyer et al 2003), Portugal (Aguiar et al 2002), and Algeria (Arab et al 2004), have shown that intermittent streams are typically species-poor compared with nearby perennial streams, whereas studies in Australia (Boulton & Suter 1986) and United States (Dieterich & Anderson 2000) have found that the species diversity in intermittent streams can be as high as in perennial streams. The degree of faunal similarity between intermittent and perennial streams also appears to differ between and within countries.…”

Section: Introductionmentioning

confidence: 99%

Composition and temporal changes in macroinvertebrate communities of intermittent streams in Hawke's Bay, New Zealand

Storey

Quinn

2008

New Zealand Journal of Marine and Freshwater Research

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Macroinvertebrate communities in three stony-bottomed intermittent headwater streams in central Hawke's Bay, New Zealand, were sampled once per month (on average) for 11 months from autumn 2005 to summer 2006, and compared with communities in three perennial streams and three intermittent streams with perennial headwaters. Among the intermittent headwater sites, 95 taxa were found, with Oligochaeta, Copepoda, Chironomidae, and Ostracoda occurring in greatest abundance. Eight mayfly, 6 stonefly and 16 caddisfly species were found. Macroinvertebrate abundance at intermittent headwater sites was equal to nearby perennial sites, but taxon richness per sample was lower. Community composition changed progressively during the autumn-to-spring flow period (MarchNovember 2005) at one intermittent headwater site, but at the other two sites a directional change was not evident, probably because stream flow stopped briefly several times during the flow period. Most of the taxa collected in riffles during the flow period were also in disconnected pools after flow stopped in summer (January 2006), but some taxa were absent and the disconnected pools contained several additional species. The disconnected pools in January had higher macroinvertebrate density and richness than connected pools during the flow period. At intermittent sites with perennial headwaters, taxon richness and EFT (Ephemeroptera, Plecoptera, and Trichoptera) richness were intermediate between intermittent headwater sites and perennial streams. Two weeks after flow began, the intermittent sites with perennial headwaters showed much higher EPT abundance and richness than the intermittent headwater sites, but after 8 weeks the proportional difference was less.

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“…Destaca-se a importância das dimensões espacial (vertical, longitudinal e lateral) e temporal, devendo serem observadas mudanças físicas, químicas e biológicas, processos hidrológicos e geomorfológicos, ocasionados por fenômenos naturais ou por intervenção humana (Petts 2000;Brown e Pasternack, 2008;Hu et al, 2008). Na dimensão longitudinal do rio, observa-se o conceito de "Contínuo Fluvial" proposto por Vannote et al (1980), bastante citado na literatura eco-hidrológica para ecossistemas em movimento (Meyer, et al, 2003;Ciesielka e Bailey, 2007;Gore, 2007;Jørgensen et al, 2007;Callanan et al, 2008;Boulton et al, 2008;Burcher, 2009), que considera dentre outros aspectos, a contínua mudança nas condições ambientais do fluxo de primeira ordem para ordens superiores, dividindo o rio em três regiões geomorfológicas distintas: região de nascente (alta contribuição terrestre de sedimentos orgânicos), médio curso (mais relacionado com a produção de algas e plantas aquáticas) e proximidade da foz (disposiçãoà turbidez, carga elevada de sedimentos procedentes de montante). Montgomery (1999), no conceito de MEDEIROS, P. C.; SOUZA, F. A. S.; RIBEIRO, M. M. R. Aspectos conceituais sobre o regime hidrológico para a definição do hidrograma ambiental.…”

Section: O Fluxo De áGua E a Ecologia Dos Riosunclassified

Untitled

2011

Ambi-Agua

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Research sites to study the influence of drainage on soil and water chemistry, litter decomposition and soil respiration in central Amazonia. ISSN = 1980ISSN = -993X -doi:10.4136/1980 ABSTRACTThe launching of this first issue of the sixth volume contains 12 inedited peer reviewed papers from 53 authors that originated from three continents, four different countries, 20 universities from which 16 are from several Brazilian federal universities, 3 from abroad, 1 Brazilian state and one municipal university. Other nine authors are from research institutions, among them three from abroad. We proudly state that this fifteenth edition has been published on time as it was the case of all previous issues. Most articles of this issue concentrate on environmental characterization of different ecosystems pollution control and mitigation. Two articles assessed the water quality of small river basins. Then there are two articles, one about fire occurrence and precipitation relationship and one about irrigation control to optimize water usage. This editorial points out new accomplishments and changes on publication policies.Keywords: Ambi-Agua; environment; water resources; publication. O periódico científico "Ambiente & Água" após cinco anos de história RESUMOO lançamento da primeira edição do sexto volume contém 12 artigos inéditos revisados por pares publicados por 53 autores de três continentes e quatro países diferentes, de 20 universidades das quais 16 são universidades federais brasileiras, três do exterior, uma estadual e outra municipal. Nove outros autores são de instituições de pesquisa, entre elas, três do exterior. Temos orgulho em afirmar que esta décima quinta edição foi publicada no dia previsto, sem atraso, como foi o caso de todas as edições anteriores. A maioria dos artigos desta edição se concentra na caracterização ambiental, controle e mitigação de poluição de diferentes ecossistemas. Dois artigos avaliaram a qualidade da água de pequenas bacias hidrográficas. Ainda há dois artigos, sendo um sobre ocorrência de incêndio relacionado com precipitação e outro apresenta equipamento para o controle de irrigação, visando otimizar o uso da água. Este editorial destaca realizações e mudanças nas políticas de publicação.Palavras-chave: Ambi-Agua; recursos hídricos; publicação.Revista científica "Ambiente e Água" después de cinco años de historia RESUMEN El lanzamiento de esta primera edición del sexto volumen contiene 12 artículos inéditos revisados por pares publicados por 53 autores que se originó a partir de tres continentes y cuatro países distintos, 20 universidades de las cuales 16 son de varias universidades federales de Brasil, 3 del extranjero, una estadual de Brasil y una universidad municipal. Otros nueve autores son de instituciones de investigación, entre ellos tres extranjeros. Estamos orgullosos de afirmar que esta decimoquinta edición ha sido publicada a tiempo, sin retraso como se pasó BATISTA, G. T. "Ambiente & Água" scientific journal after five years of history. Ambi-Agua, Taubaté, v. 6, n...

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Lotic communities of two small temporary karstic stream systems (East Westphalia, Germany) along a longitudinal gradient of hydrological intermittency

Cited by 36 publications

References 12 publications

Microbial mats as shelter microhabitat for amphipods in an intermittent karstic spring

Microbial mats as shelter microhabitat for amphipods in an intermittent karstic spring

Composition and temporal changes in macroinvertebrate communities of intermittent streams in Hawke's Bay, New Zealand

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