Biological diversity of peatlands in Canada

Warner, Barry G.; Asada, Taro

doi:10.1007/s00027-006-0853-2

Cited by 55 publications

(34 citation statements)

References 100 publications

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“…There are many different spring types, and the early diatom studies mostly concentrated on specifi c habitats: thermal (BÍLÝ 1934, BRABEZ 1941, DELL'UOMO 1986, LE-DERER et al 1998, KAŠTOVSKÝ and KOMÁREK 2001, HINDÁK and HINDÁKOVÁ 2006, saline (KADLUBOWSKA 1985), tufa (PENTECOST 1991(PENTECOST , 1998 and acid (CAMBRA and HINDÁK 1998). More recently springs and especially Alpine springs have attracted the attention of biologists and conservationists due to the high share of endangered species and specialists found in their communities (e.g., CANTONATI 1998, PEINTINGER et al 2003, CANTONATI et al 2006, WARNER and ASADA 2006, HÁJEK et al 2006, PAYNE and MITCHELL 2007.…”

Section: Introductionmentioning

confidence: 99%

Diatom communities and vegetation of springs in the south-western Alps

Mogna¹,

Cantonati²,

Andreucci³

et al. 2015

Acta Botanica Croatica

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-Springs are unique but understudied habitats. Diatom communities have received some attention but have remained largely unknown in the south-western Alps. We therefore studied the springs of the south-western extreme of the Alpine mountain range. We analysed epilithic and epiphytic assemblages in 48 springs of different ecomorphological types, located on contrasting lithological substrata (carbonate/siliceous). Moreover, phytosociological relevés were carried out for carbonate springs. The diatom fl ora consisted of 223 taxa. Most (198) of the taxa were included in the Red List, and 12.5% belonged to threatened categories. Characteristic spring taxa (crenophiles) were present. The ecological preferences of crenophilous diatom species described in the eastern Alps were confi rmed. Diatom species characteristic of the lake-littoral zone were found in pool springs. We observed no signifi cant differences in species richness and diversity between epilithic and epiphytic assemblages, but some species showed a preference for bryophytes, and fi ve occurred in the epibryon only. As regards moisture conditions, 15% of the taxa occurred on wet or temporarily dry sites, and 4% lived mostly outside water bodies. The main environmental factors infl uencing diatom assemblages were pH, conductivity, altitude, and shading. The carbonate-substratum crenic vegetation was composed of a mixture of vascular plants and bryophytes, which fi nd their ecological optimum in springs. Bryophyte cover was dominant, with the most abundant taxa belonging to the genus Palustriella. The vegetation corresponded to the Cratoneuretum commutati association.

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Section: Introductionmentioning

confidence: 99%

Diatom communities and vegetation of springs in the south-western Alps

Mogna¹,

Cantonati²,

Andreucci³

et al. 2015

Acta Botanica Croatica

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“…Peatland ecosystems have recently been in the spotlight because of their unique flora and fauna, which include many rare species (Rydin and Jeglum 2006;Spitzer and Danks 2006;Warner and Asada 2006), but very few studies have examined the fauna comprising peatlands. Rosenberg and Danks (1987) suggested that some aquatic invertebrates have evolved several traits, such as precise microhabitat selectivity, to avoid food limitation, desiccation, and anoxia in peatlands.…”

Section: Introductionmentioning

confidence: 99%

Invertebrate assemblages in relation to habitat types on a floating mat in Mizorogaike Pond, Kyoto, Japan

2009

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Abiotic environmental variables and invertebrate assemblages were compared among four habitat types (bare hollow, sphagnum-rich hollow, pool, and mat edge) on a floating mat in Mizorogaike Pond, Kyoto. We found differences in abiotic environments between two hollows and two inundated habitats (pool and mat edge); pH was significantly lower in hollow habitats than in inundated habitats, and water depths were significantly shallower in sphagnum-rich hollows than in inundated sites. The composition of invertebrate assemblages in the hollow was distinct from that in the inundated habitats. The abundances of some dominant invertebrate taxa or functional feeding groups on the floating mat differed between the hollows and inundated habitats, and were correlated with water temperature, pH and depth. These results indicate that habitat heterogeneity created by the coexistence of hollows and inundated habitats contributes to species diversity on the floating mat in Mizorogaike Pond. A comparison of the pH values in different wetlands revealed that both bog-and fen-specific components coexist within this system. In order to adequately manage and conserve peatland ecosystems, it is necessary to consider the importance and vulnerability of both hollows and inundated habitats in peatlands.

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“…peatlands are important for biodiversity, as numerous species of invertebrates, birds and 49 bryophytes are restricted to such habitats (Warner & Asada, 2006). On both local and global scales, peatlands have been damaged through drainage and peat extraction, but 51 attempts are now being made to restore them through ecological engineering techniques.…”

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confidence: 99%

Natural revegetation of bog pools after peatland restoration involving ditch blocking—The influence of pool depth and implications for carbon cycling

Peacock

Evans

Fenner

et al. 2013

Ecological Engineering

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Article (refereed) -postprintPeacock, Mike; Evans, Chris D.; Fenner, Nathalie; Freeman, Chris. 2013. Natural revegetation of bog pools after peatland restoration involving ditch blocking: the influence of pool depth and implications for carbon cycling. Contact CEH NORA team at noraceh@ceh.ac.ukThe NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner.

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Biological diversity of peatlands in Canada

Abstract: Knowledge about the biodiversity of Canada's vast peatlands is poor largely because peatlands have not been routinely differentiated from other types of habitats. Plants are better known than the animals.

Cited by 55 publications

References 100 publications

Diatom communities and vegetation of springs in the south-western Alps

Diatom communities and vegetation of springs in the south-western Alps

Invertebrate assemblages in relation to habitat types on a floating mat in Mizorogaike Pond, Kyoto, Japan

Natural revegetation of bog pools after peatland restoration involving ditch blocking—The influence of pool depth and implications for carbon cycling

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