Spring-fen habitat islands in a warming climate: Partitioning the effects of mesoclimate air and water temperature on aquatic and terrestrial biota

Horsák, Michal; Polášková, Vendula; Zhai, Marie; Bojková, Jindřiška; Syrovátka, Vít; Šorfová, Vanda; Schenková, Jana; Polášek, Marek; Peterka, Tomáš; Hájek, Michal

doi:10.1016/j.scitotenv.2018.03.319

Cited by 36 publications

(42 citation statements)

References 65 publications

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“…Groundwater‐dependent habitats seem to provide a suitable model for testing the effect of biotic interactions because they have relatively stable environmental conditions (Barquín & Death, ; Glazier, ) due to the buffering effect of groundwater (Horsák et al, ). This suggests that spring communities are probably at equilibrium and thus strongly structured by both competition (Glazier, ) and predation (Peckarsky, Fraissinet, Penton, & Conclin Junior, ).…”

Section: Introductionmentioning

confidence: 99%

“…helocrenes) even if they are perennial (Hájková, Wolf, & Hájek, ). Local heterogeneity in environmental stability of springs has been found to significantly influence species composition of different spring communities (Hájková et al, ; Horsák et al, ; Von Fumetti & Nagel, ). We predicted that predatory effect would be higher in the more stable mesohabitats.…”

Section: Introductionmentioning

confidence: 99%

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Does predator abundance influence species diversity of equilibrium macroinvertebrate assemblages in spring fens?

et al. 2020

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Predation may significantly control number and density of coexisting species. The effects of predation on species diversity have traditionally been tested in experiments and theoretical models of simple trophic systems. In complex natural ecosystems, however, disentangling multiple sources of variation is difficult. In groundwater‐fed environments, a significant effect of predation can be expected due to the relatively stable environmental conditions; however, it has never been properly examined. We analysed species diversity and total abundance of macroinvertebrate assemblages in 48 Western Carpathian spring fens, separately for whole sites and mesohabitat/season, and partitioned the effects of predation intensity from those of environmental variables in robust models using a bootstrapping technique. We verified our results by accounting for taxa resistant to predation. The assumption that predation‐mediated coexistence of species is the main mechanism responsible for the relatively species‐rich assemblages in the Western Carpathian spring fens was not supported. However, predation may significantly influence abundance of non‐predatory species and, under some conditions, it may contribute to explaining patterns in species diversity. The effect of predation did not differ between the mesohabitats with different stability. However, we found higher environmental control in spring and a stronger effect of predators in autumn, which suggests that different mechanisms influence fen assemblages in different seasons. Our study provides a new robust approach how to test the effect of predation on natural macroinvertebrate assemblages. The importance of predation was lower than expected in equilibrium assemblages but it may vary in time.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Does predator abundance influence species diversity of equilibrium macroinvertebrate assemblages in spring fens?

et al. 2020

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“…The CCVS, integrating species traits describing habitat specialisation, thermal preferences, endemism and life history (Hershkovitz, Dahm, Lorenz, & Hering, ), is also significantly higher in fens. In our previous study, we found that local water temperature and its annual fluctuation highly affect aquatic assemblages, and this effect was higher for habitat specialists than for other species (Horsák et al, ). Some calcareous‐fen specialists with a clear distribution centre in temperate Europe showed a strong affinity to climatically cold sites in our study system and may hence be considered as threatened by climate warming (Horsák et al, ).…”

Section: Discussionmentioning

confidence: 92%

“…In our previous study, we found that local water temperature and its annual fluctuation highly affect aquatic assemblages, and this effect was higher for habitat specialists than for other species (Horsák et al, ). Some calcareous‐fen specialists with a clear distribution centre in temperate Europe showed a strong affinity to climatically cold sites in our study system and may hence be considered as threatened by climate warming (Horsák et al, ). These species are currently considered as near threatened, but some of them (e.g., E. vicinus (McLachlan, 1879) and Wormaldia copiosa (McLachlan, 1868) are expected to be highly endangered (Chvojka & Komzák, ).…”

Section: Discussionmentioning

confidence: 92%

“…This study is a part of extensive research on macroinvertebrates of Western Carpathian spring fens lasting nearly 15 years (e.g., Bojková & Helešic, 2009;Horsák et al, 2015Horsák et al, , 2018Rádková et al, 2014). The data F I G U R E 1 Map of the studied sites in the Czech and Slovak Republics set was built gradually, because it was impossible to study all sites in the same year.…”

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Factors explaining community contrast of Trichoptera assemblages at insular Western Carpathian spring fens to the adjacent headwaters

Petruželová

Bojková

Hubáčková

et al. 2019

Internat Rev Hydrobiol

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The specific biota of isolated habitats is determined by habitat properties (e.g., age, size, environmental conditions), their spatial isolation and the characteristics of the surrounding landscape matrix. In this study, we examine the contrast in Trichoptera assemblages between isolated island‐like Western Carpathian spring fens and nearby headwater streams. We evaluate the potential of streams and their mesohabitats to serve as stepping‐stone habitats for fen species, and identify factors determining the dissimilarity of the Trichoptera between the fens and streams. Of 24 studied fen‐stream pairs, 80 Trichoptera taxa, mainly species, were identified. Out of these, 17 and 34 species were exclusive for fens and streams, respectively. Although the remaining 29 species were in common, a clear preference of each species to one of these two habitat types was observed, which resulted in highly contrasting assemblages in terms of species composition. A clear difference was found also at the level of species traits, as cold‐adapted crenobiont and crenophilous species of small body size, limited dispersal ability, and long larval development prevailed at the fens. The fen‐stream dissimilarity of Trichoptera was not associated either with fen habitat properties (age, size and environmental conditions) or with the distance between the habitats. Only stream characteristics reducing the fen‐stream environmental contrast were important. Abundance of fen species at streams was negatively related with substrate roughness and stream size, suggesting that small streams with a fine substrate can serve preferably as stepping‐stone habitats for the fen species. Our results show the high conservation value of spring‐fen Trichoptera assemblages due to the prevalence of habitat specialists as well as cold stenothermic and pollution‐sensitive species. It also seems that the isolation of fens surrounded only by unsuitable streams is additionally increased by a lack of stepping‐stone habitats in the surrounding matrix.

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Spring water table depth mediates within‐site variation of soil temperature in groundwater‐fed mires

Horsák

Horsáková

Polášek

et al. 2021

Hydrological Processes

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Groundwater-dependent ecosystems represent globally rare edaphic islands of scattered distribution, often forming areas of regionally unique environmental conditions. A stable groundwater supply is a key parameter defining their ecological specificity, promoting also soil thermal buffering. Still, a limited number of studies dealt with the importance of water temperature in mire ecosystems and virtually no data exist on within-site variation in the temperature buffer effect. Three temperature dataloggers, placed in patches potentially differing in groundwater supply, were installed in each of 19 Western Carpathian spring mire sites from May 2019 to July 2020. Spring source plots statistically differed in water temperature parameters from

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Spring-fen habitat islands in a warming climate: Partitioning the effects of mesoclimate air and water temperature on aquatic and terrestrial biota

Cited by 36 publications

References 65 publications

Does predator abundance influence species diversity of equilibrium macroinvertebrate assemblages in spring fens?

Does predator abundance influence species diversity of equilibrium macroinvertebrate assemblages in spring fens?

Factors explaining community contrast of Trichoptera assemblages at insular Western Carpathian spring fens to the adjacent headwaters

Spring water table depth mediates within‐site variation of soil temperature in groundwater‐fed mires

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