Drivers of decomposition and the detrital invertebrate community differ across a hummock-hollow microtopology in Boreal peatlands

Barreto, Carlos; Lindo, Zoë

doi:10.1080/11956860.2017.1412282

Cited by 28 publications

(27 citation statements)

References 60 publications

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“…Oribatid mites (Acari: Oribatida) are commonly the dominant group of arthropods in terrestrial soils (Norton & Behan-Pelletier 2009) and are well represented in terms of diversity in wetlands such as peatlands (bogs and fens) (Belanger 1976;Behan-Pelletier & Bissett 1994;Lehmitz 2014;Lindo 2015;Barreto & Lindo 2018). Peatlands are defined as wetlands with organic soils over 40 cm deep, with high water table from precipitation (bogs) or precipitation and ground water connectivity (fens) (National Wetlands Working Group 1988).…”

Section: Introductionmentioning

confidence: 99%

“…Since that work, only a handful of studies have directly examined oribatid mites in Canadian peatland habitats (bogs and fens) (Behan-Pelletier 1997;Lindo 2015;Barreto & Lindo 2018; and Markkula & Kuhry 2020 for subfossil), described species from peatlands (Behan-Pelletier & Eamer 2003;Norton & Behan-Pelletier 2007;Behan-Pelletier & Walter 2013;Walter & Latonas 2013), or provided records from non-specific Sphagnum moss habitats (McAdams et al 2018;Meehan et al 2020). In the United States recent studies of oribatid mites in peatland and/or Sphagnum moss habitats only include Donaldson (1996), Norton and Behan-Pelletier (2007), and Walter and Latonas (2013).…”

Section: Introductionmentioning

confidence: 99%

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Checklist of oribatid mites (Acari: Oribatida) from two contrasting boreal fens: an update on oribatid mites of Canadian peatlands

Barreto

Lindo

2021

saa

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A checklist of the oribatid mite species from two boreal fens in Northern Ontario, Canada is presented. 174 peat soil samples, collected between 2015–2020, yielded a heterogeneous assemblage of 80 species, 57 genera and 33 families. Species richness and diversity were significantly higher in a Sphagnum-dominated fen (69 species) compared to a Carex-dominated fen (51 species), and although 40 species were found at both sites, overall composition was significantly different between the two sites. We also present an update to the seminal work of Behan-Pelletier and Bissett (1994) on Oribatida of Canadian peatlands with 45 new species records for peatlands. Records for the parthenogenetic families Brachychthoniidae Thor, 1934 and Suctobelbidae Jacot, 1938 were considerably expanded, but other families such as Punctoribatidae, Thor, 1937 remain poorly represented in Canadian peatlands. Taken together, species richness estimates range from 86–105 species based on our sampling and the number of undescribed species recorded suggests that the oribatid mite fauna still need further examination to encompass their actual biodiversity in peatlands. We report that the oribatid mite fauna of Canadian peatlands comprise 186 species that includes all published records as of February 2021 and species presented here.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Checklist of oribatid mites (Acari: Oribatida) from two contrasting boreal fens: an update on oribatid mites of Canadian peatlands

Barreto

Lindo

2021

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“…Oribatid mites inhabit many habitats in addition to their traditional soil-litter environment, such as freshwater (BehanPelletier and Eamer 2007) and marine littoral (Pfingstl 2017), and canopy habitats (BehanPelletier and Winchester 1998, Lindo and Winchester 2007). They are also the dominant arthropods in peatlands (BehanPelletier and Bissett 1994, Barreto and Lindo 2018). Based on their feeding behaviour as a group, they have been referred to as selective generalists (Schneider and Maraun 2005) to reflect the opportunistic feeding strategies of many species within their detrital environment, contributing to decomposition and nutrient cycling processes.…”

Section: Superorder Acariformes: Order Sarcoptiformesmentioning

confidence: 99%

“…More restricted ecological surveys have been published for mites in forest canopies of the Pacific coast (Fagan et al 2006, Lindo and Winchester 2006, 2009), in soil and litter (e.g., St. John et al 2002, Déchêne and Buddle 2009, BehanPelletier and Kanashiro 2010, Sylvain and Buddle 2010, Walter and Latonas 2012, Newton 2013, Meehan and Turnbull 2018), peatlands (BehanPelletier and Bissett 1994, Barreto and Lindo 2018, McAdams et al 2018), in dung (Lindquist 1998), and on plants (Forest et al 1982, Beaulieu and Knee 2014), bumble bees (Haas et al in press), beetles (Lindquist and Wu 1991, Knee et al 2013), and birds (Galloway et al 2014, Knee and Galloway 2017b). For certain families or higher taxa of Acari, these publications represent a key source of information for species records in Canada.…”

Section: Introductionmentioning

confidence: 99%

Acari of Canada

Beaulieu

Knee

Nowell

et al. 2019

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Summaries of taxonomic knowledge are provided for all acarine groups in Canada, accompanied by references to relevant publications, changes in classification at the family level since 1979, and notes on biology relevant to estimating their diversity. Nearly 3000 described species from 269 families are recorded in the country, representing a 56% increase from the 1917 species reported by Lindquist et al. (1979). An additional 42 families are known from Canada only from material identified to family- or genus-level. Of the total 311 families known in Canada, 69 are newly recorded since 1979, excluding apparent new records due solely to classification changes. This substantial progress is most evident in Oribatida and Hydrachnidia, for which many regional checklists and family-level revisions have been published. Except for recent taxonomic leaps in a few other groups, particularly of symbiotic mites (Astigmata: feather mites; Mesostigmata: Rhinonyssidae), knowledge remains limited for most other taxa, for which most species records are unpublished and may require verification. Taxonomic revisions are greatly needed for a large majority of families in Canada. Based in part on species recorded in adjacent areas of the USA and on hosts known to be present here, we conservatively estimate that nearly 10,000 species of mites occur in Canada, but the actual number could be 15,000 or more. This means that at least 70% of Canada’s mite fauna is yet unrecorded. Much work also remains to match existing molecular data with species names, as less than 10% of the ~7500 Barcode Index Numbers for Canadian mites in the Barcode of Life Database are associated with named species. Understudied hosts and terrestrial and aquatic habitats require investigation across Canada to uncover new species and to clarify geographic and ecological distributions of known species.

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“…For each species, 10-20 g (dry mass equivalent) of leaf litter was sealed within 1.2 mm mesh fiberglass screen measuring 20 × 20 cm. This mesh size allowed access to microbial decomposers as well as oribatid mites and ants, which are the dominant invertebrates in the food web in peat soils (Barreto and Lindo, 2018). One bag of each species was fixed to a piece of 1.65 mm monofilament trimmer line in a random arrangement, resulting in nine bags on each line.…”

Section: Decomposition Experimentsmentioning

confidence: 99%

Inferring Methane Production by Decomposing Tree, Shrub, and Grass Leaf Litter in Bog and Rich Fen Peatlands

Yavitt

Kryczka

Huber

et al. 2019

Front. Environ. Sci.

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Plant litter provides a fresh source of energy and nutrients to fuel microbial activity in soil, and in northern peatlands this can be leaf litter from mosses, graminoids, shrubs, and/or trees. Because Sphagnum and other mosses decompose slowly, vascular plant litter assumes a principal role, but its role in microbial methane production is unclear. Therefore, we examined decomposition of leaf litter from nine species, including trees, shrubs, and graminoids, using litterbags positioned for up to 2.5 years in two raised bogs and in two rich fens. Across species leaf litter quality varied for concentrations of nitrogen, soluble organic matter, and cell wall composition. After 2.5 years of decay the amount of leaf litter mass remaining ranged from 43 to 63% in the bogs vs. 17 to 71% in the rich fens. Thus, site conditions interacted with litter quality to determine decay rates but with species-specific patterns. Leaf mass remaining after 0.5, 1.5, and 2.5 years of decay was incubated in vitro, without soil, to assess its ability to support methane production and concomitant anaerobic carbon dioxide respiration. Residue from all nine species supported methane production, with the greatest rates (up to 5,000 nmol g −1 day −1 ) in tissue with high concentrations of pectin. Rates were 2-to 700-times greater for the leaf material that decomposed in the rich fens than in the bogs. Production rates were more variable for methane than for anaerobic respiration. As seen for mass loss, differences in litter quality predicted variation in gas production rates but differently in the bogs than in the rich fens. The results underscore the importance of vascular plant litter in the biogeochemistry of carbon and methane in peatlands and why vegetation, plant species composition, and peatland type must be described to put peatland ecosystems into global budgets of carbon and methane.

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Drivers of decomposition and the detrital invertebrate community differ across a hummock-hollow microtopology in Boreal peatlands

Cited by 28 publications

References 60 publications

<p><strong>Checklist of oribatid mites (Acari: Oribatida) from two contrasting boreal fens: an update on oribatid mites of Canadian peatlands</strong></p>

<p><strong>Checklist of oribatid mites (Acari: Oribatida) from two contrasting boreal fens: an update on oribatid mites of Canadian peatlands</strong></p>

Acari of Canada

Inferring Methane Production by Decomposing Tree, Shrub, and Grass Leaf Litter in Bog and Rich Fen Peatlands

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