Faunistic assemblages of natural springs in different areas in the Swiss National Park: a small-scale comparison

Fumetti, Stefanie von; Blattner, Lucas

doi:10.1007/s10750-016-2788-5

Cited by 27 publications

(16 citation statements)

References 33 publications

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“…Ongoing investigations of springs in the Swiss National Park in the canton Graubünden support this assumption. On a local scale, differentiation of species assemblage was explained by differences in the substrate composition caused by the location of the areas below or above the treeline, but not by geographical distances (von Fumetti and Blattner 2016) In zones above the treeline, the uppermost parts are characterized by the dominance of species also living in snow-melt water, glacier outflows, Alpine lakes or temporary streams. This demonstrates that groundwater outflows are unstable on a medium-and long-term scale.…”

Section: Upper Bavaria Germany Bernese Alps and Graubü Nden Switzementioning

confidence: 97%

Limno-ecological characteristics and distribution patterns of spring habitats and invertebrates from the Lowlands to the Alps

et al. 2016

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Springs are autochthonous aquatic ecotones with complex functional properties and heterogeneous ecomorphological structures. Within a small spatial extent, invertebrates are highly diverse and mainly composed of species adapted to the surface-subterranean water interface, the aquatic-terrestrial interface or to the spring habitat itself. In this publication, a first synopsis of limnoecological case studies of springs from the Lowlands of Schleswig-Holstein, the low mountain ranges of Hesse and Thuringia, the pre-Alps of the Jura Mountains in Switzerland and the Alps in Germany and Switzerland is presented. The field surveys conducted in the different areas focus on an ecological assessment of spring habitats, distribution patterns of the invertebrate fauna and specific regional characteristics. A regional faunistic differentiation of spring-related invertebrate species is evident. A change in the faunistic composition in general and a loss of crenobionts owing to climatic and land-use changes are expected. In addition, it should be noted that long-term monitoring data required to make reliable statements about future developments in the distribution of spring species and to predict habitat conditions are not available.

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Section: Upper Bavaria Germany Bernese Alps and Graubü Nden Switzementioning

confidence: 97%

Limno-ecological characteristics and distribution patterns of spring habitats and invertebrates from the Lowlands to the Alps

et al. 2016

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“…Groundwater-fed spring systems are fragmented, biodiverse ecotones that provide essential ecosystem services (Cantonati, Gerecke, & Bertuzzi, 2006;von Fumetti & Blattner, 2017;Griebler & Avramov, 2014). Climate predictions provide evidence that decreasing precipitation and increasing evapotranspiration will reduce recharge and possibly increase groundwater withdrawal rates (Green et al, 2011;Kløve et al, 2014), reinforcing the likelihood of forced local adaptation due to limiting habitat availability (Fei et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Comparative proteomics of stenotopic caddisfly Crunoecia irrorata identifies acclimation strategies to warming

2019

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Species' ecological preferences are often deduced from habitat characteristics thought to represent more or less optimal conditions for physiological functioning. Evolution has led to stenotopic and eurytopic species, the former having decreased niche breadths and lower tolerances to environmental variability. Species inhabiting freshwater springs are often described as being stenotopic specialists, adapted to the stable thermal conditions found in these habitats. Whether due to past local adaptation these species have evolved or have lost intra‐generational adaptive mechanisms to cope with increasing thermal variability has, to our knowledge, never been investigated. By studying how the proteome of a stenotopic species changes as a result of increasing temperatures, we investigate if the absence or attenuation of molecular mechanisms is indicative of local adaptation to freshwater springs. An understanding of compensatory mechanisms is especially relevant as spring specialists will experience thermal conditions beyond their physiological limits due to climate change. In this study, the stenotopic species Crunoecia irrorata (Trichoptera: Lepidostomatidae, Curtis 1834) was acclimated to 10, 15 and 20°C for 168 hr. We constructed a homology‐based database and via liquid chromatography‐tandem mass spectrometry (LC‐MS/MS)‐based shotgun proteomics identified 1,358 proteins. Differentially abundant proteins and protein norms of reaction revealed candidate proteins and molecular mechanisms facilitating compensatory responses such as trehalose metabolism, tracheal system alteration and heat‐shock protein regulation. A species‐specific understanding of compensatory physiologies challenges the characterization of species as having narrow tolerances to environmental variability if that characterization is based on occurrences and habitat characteristics alone.

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“…The percentage of alpine species significantly increased along the altitudinal gradient, whereas the percentage of spring specialists did not significantly change. Other abiotic factors such as substrate availability (e.g., Cantonati et al, 2006;Von Fumetti and Blattner, 2017) and substrate or discharge stability are just as important (e.g., Glazier, 1991Glazier, , 2014Von Fumetti & Nagel, 2012). The equal occurrence of crenobiontic taxa in springs with high and low temperature variability as well as in springs with a certain contribution of meltwater underlines the special character of springs.…”

Section: Influence Of Thermal Variability On the Macroinvertebrate mentioning

confidence: 99%

Temperature variability and its influence on macroinvertebrate assemblages of alpine springs

2017

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Constant water temperature is thought to be a key factor for macroinvertebrates inhabiting springs. Springs in low mountain ranges are usually fed by deep groundwater. At high altitudes, they are, to a certain degree, fed by near-surface aquifers and are influenced by snow and permafrost meltwater. This may alter temperature constancy. In this study, we examined 13 springs in the Bernese Alps in Switzerland during 1 year. The aim was to investigate the variability of water temperature and its influence on macroinvertebrate assemblages of alpine springs at different altitudes. Water temperature and solar radiation were continuously monitored; electrical conductivity, pH, and oxygen were measured; and a quantitative sampling of the macroinvertebrates was conducted 3 times from June 2010 to July 2011. Using linear correlation analysis, we detected a significant decrease of the variability of water temperature along the altitudinal gradient. Electrical conductivity was significantly lower in springs at high altitude. This might indicate an influence of snow and permafrost meltwater. The percentage of alpine species significantly increased with altitude. Taxon richness and the percentage of crenobiontic species were not significantly correlated with any physicochemical parameter.Monthly temperature amplitude and snow cover had a significant influence on the composition of macroinvertebrate assemblages, distinguishing high alpine springs from those at lower altitude. Harsh environmental conditions with low but constant water temperatures fostered alpine rhithrobiontic species, also directly at the outflow, that is, in springs. A loss of such highly adapted species is predicted due to climate change.

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Faunistic assemblages of natural springs in different areas in the Swiss National Park: a small-scale comparison

Cited by 27 publications

References 33 publications

Limno-ecological characteristics and distribution patterns of spring habitats and invertebrates from the Lowlands to the Alps

Limno-ecological characteristics and distribution patterns of spring habitats and invertebrates from the Lowlands to the Alps

Comparative proteomics of stenotopic caddisfly Crunoecia irrorata identifies acclimation strategies to warming

Temperature variability and its influence on macroinvertebrate assemblages of alpine springs

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