Effects of disturbance on the carbon dioxide balance of an anthropogenic peatland in northern Patagonia

Valdés-Barrera, Ariel; Kutzbach, Lars; Celis‐Diez, Juan L.; Armestó, Juan J.; Holl, David; Perez‐Quezada, Jorge F.

doi:10.1007/s11273-019-09682-3

Cited by 11 publications

(16 citation statements)

References 50 publications

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“…A clear example are the sites located across Mexico (i.e., MexFlux; Vargas et al., 2013) that are affiliated with FLUXNET but most data are not currently available for the wider scientific community (Villarreal et al., 2019). We are also aware that there are multiple unaffiliated sites across LA such as in semi‐arid grasslands (Hinojo‐Hinojo et al., 2016), croplands (Lewczuk et al., 2017), The Chacon region (Toledo & Figuerola, 2019), The Andes (Callañaupa‐Gutierrez et al., 2020), Patagonia (Valdés‐Barrera et al., 2019), among other sites across LA. Furthermore, this study did not account for representation of disturbances and land use change across LA.…”

Section: Discussionmentioning

confidence: 99%

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Representativeness of FLUXNET Sites Across Latin America

Villarreal

Vargas

2021

JGR Biogeosciences

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Environmental monitoring, especially long-term monitoring programs are a backbone component for environmental science and policy (Chabbi et al., 2017; Lovett et al., 2007). Environmental monitoring is fundamental to foster knowledge as it promotes creativity for scientific methodologies, generates invaluable data products, and provides baselines and information to address socio-environmental grand challenges (Lovett et al., 2007; Scholes et al., 2017; Vargas et al., 2012). It is assumed that developing environmental observatory networks (EONs) would lead to successful environmental monitoring efforts as EONs are entities

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Section: Discussionmentioning

confidence: 99%

“…The Chacon region (Toledo & Figuerola, 2019), The Andes (Callañaupa-Gutierrez et al, 2020), Patagonia (Valdés-Barrera et al, 2019), among other sites across LA. Furthermore, this study did not account for representation of disturbances and land use change across LA.…”

Section: Challenges and Opportunitiesmentioning

confidence: 99%

Representativeness of FLUXNET Sites Across Latin America

Villarreal

Vargas

2021

JGR Biogeosciences

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“…Therefore, changes in species composition may significantly affect C sequestration as species differ considerably in productivity and decomposability (Cornwell et al, 2008). Likewise, human activities, such as peat harvesting and cattle grazing, are significant factors accounting for changes in peatland floristic composition (Domínguez et al, 2012), affecting the rates of organic matter decomposition, reducing the soil carbon stock (Valdés‐Barrera et al, 2019), and releasing CH 4 and CO 2 into the atmosphere (Loise et al, 2020; Miettinen et al, 2017; Walker et al, 2016). Thus, accelerating the greenhouse gas effect and contributing to global warming (Phillips & Beeri, 2008; Schaepman‐Strub et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…These activities have been shown to increase the species richness, facilitate the arrival of exotic species, and reduce their soil carbon sink capacity (Cabezas et al, 2015;Domínguez et al, 2012;Valdés-Barrera et al, 2019). Anthropogenic perturbations on peatlands often have a cumulative effect: when combined, the impacts are more significant than those expected from each disturbance operating separately (Limpens et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Anthropogenic peatlands of Northern Patagonia are commonly harvested for the superficial layer of S. magellanicum moss for horticultural purposes and used for cattle grazing (Cabezas et al, 2015; Díaz et al, 2008). These activities have been shown to increase the species richness, facilitate the arrival of exotic species, and reduce their soil carbon sink capacity (Cabezas et al, 2015; Domínguez et al, 2012; Valdés‐Barrera et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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Disturbance alters relationships between soil carbon pools and aboveground vegetation attributes in an anthropogenic peatland in Patagonia

Lopatin

Araya‐López

Galleguillos

et al. 2022

Ecology and Evolution

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Anthropogenic‐based disturbances may alter peatland soil–plant causal associations and their ability to sequester carbon. Likewise, it is unclear how the vegetation attributes are linked with different soil C decomposition‐based pools (i.e., live moss, debris, and poorly‐ to highly‐decomposed peat) under grassing and harvesting conditions. Therefore, we aimed to assess the relationships between aboveground vegetation attributes and belowground C pools in a Northern Patagonian peatland of Sphagnum magellanicum with disturbed and undisturbed areas. We used ordination to depict the main C pool and floristic gradients and structural equation modeling (SEM) to explore the direct and indirect relationships among these variables. In addition, we evaluated whether attributes derived from plant functional types (PFTs) are better suited to predict soil C pools than attributes derived from species gradients. We found that the floristic composition of the peatland can be classified into three categories that follow the C pool gradient. These categories correspond to (1) woody species, such as Baccharis patagonica, (2) water‐logged species like Juncus procerus, and (3) grasslands. We depicted that these classes are reliable indicators of soil C decomposition stages. However, the relationships change between management. We found a clear statistical trend showing a decrease of live moss, debris, and poorly‐decomposed C pools in the disturbed area. We also depicted that plant diversity, plant height, and PFT composition were reliable indicators of C decomposition only under undisturbed conditions, while the species‐based attributes consistently yielded better overall results predicting soil C pools than PFT‐based attributes. Our results imply that managed peatlands of Northern Patagonia with active grassing and harvesting activities, even if small‐scaled, will significantly alter their future C sequestration capacities by decreasing their live and poorly‐decomposed components. Finally, aboveground vegetation attributes cannot be used as proxies of soil C decomposition in disturbed peatlands as they no longer relate to decomposition stages.

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The Ecosystem Services Provided by Peatlands in Patagonia

Iturraspe

Urciuolo

2021

Natural and Social Sciences of Patagonia

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Effects of disturbance on the carbon dioxide balance of an anthropogenic peatland in northern Patagonia

Cited by 11 publications

References 50 publications

Representativeness of FLUXNET Sites Across Latin America

Representativeness of FLUXNET Sites Across Latin America

Disturbance alters relationships between soil carbon pools and aboveground vegetation attributes in an anthropogenic peatland in Patagonia

The Ecosystem Services Provided by Peatlands in Patagonia

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