Carbon pool trends and dynamics within a subtropical peatland during long-term restoration
Abstract Introduction The Florida Everglades has undergone significant ecological change spanning the continuum of disturbance to restoration. While the restoration effort is not complete and the ecosystem continues to experience short duration perturbations, a better understanding of long-term C dy...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2017-12-01
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| Series: | Ecological Processes |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s13717-017-0110-8 |
| _version_ | 1819138867498844160 |
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| author | Paul Julian Stefan Gerber Alan L. Wright Binhe Gu Todd Z. Osborne |
| author_facet | Paul Julian Stefan Gerber Alan L. Wright Binhe Gu Todd Z. Osborne |
| author_sort | Paul Julian |
| collection | DOAJ |
| description | Abstract Introduction The Florida Everglades has undergone significant ecological change spanning the continuum of disturbance to restoration. While the restoration effort is not complete and the ecosystem continues to experience short duration perturbations, a better understanding of long-term C dynamics of the Everglades is needed to facilitate new restoration efforts. This study evaluated temporal trends of different aquatic carbon (C) pools of the northern Everglades Protection Area over a 20-year period to gauge historic C cycling patterns. Dissolved inorganic C (DIC), dissolved organic C (DOC), particulate organic C (POC), and surface water carbon dioxide (pCO2(aq)) were investigated between May 1, 1994 and April 30, 2015. Results Annual mean concentrations of DIC, DOC, POC, and pCO2(aq) significantly decreased through time or remained constant across the Water Conservation Areas (WCAs). Overall, the magnitude of the different C pools in the water column significantly differed between regions. Outgassing of CO2 was dynamic across the Everglades ranging from 420 to 2001 kg CO2 year−1. Overall, the historic trend in CO2 flux from the marsh declined across our study area while pCO2(aq) largely remained somewhat constant with the exception of Water Conservation Area 2 which experienced significant declines in pCO2(aq). Particulate OC concentrations were consistent between WCAs, but a significantly decreasing trend in annual POC concentrations was observed. Conclusions Hydrologic condition and nutrient inputs significantly influenced the balance, speciation, and flux of C pools across WCAs suggesting a subsidy-stress response in C dynamics relative to landscape scale responses in nutrient availability. The interplay between nutrient inputs and hydrologic condition exert a driving force on the balance between DIC and DOC production via the metabolism of organic matter which forms the base of the aquatic food web. Along the restoration trajectory as water quality and hydrology continues to improve, it is expected that C pools will respond accordingly. |
| first_indexed | 2024-12-22T11:13:35Z |
| format | Article |
| id | doaj.art-f23d5381b8c64e55988ea1aaa3e3b011 |
| institution | Directory Open Access Journal |
| issn | 2192-1709 |
| language | English |
| last_indexed | 2024-12-22T11:13:35Z |
| publishDate | 2017-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Ecological Processes |
| spelling | doaj.art-f23d5381b8c64e55988ea1aaa3e3b0112022-12-21T18:28:06ZengSpringerOpenEcological Processes2192-17092017-12-016111410.1186/s13717-017-0110-8Carbon pool trends and dynamics within a subtropical peatland during long-term restorationPaul Julian0Stefan Gerber1Alan L. Wright2Binhe Gu3Todd Z. Osborne4University of Florida, Soil and Water Sciences DepartmentUniversity of Florida, Soil and Water Sciences DepartmentUniversity of Florida, Soil and Water Sciences DepartmentSouth Florida Water Management District, Water Quality BureauUniversity of Florida, Soil and Water Sciences DepartmentAbstract Introduction The Florida Everglades has undergone significant ecological change spanning the continuum of disturbance to restoration. While the restoration effort is not complete and the ecosystem continues to experience short duration perturbations, a better understanding of long-term C dynamics of the Everglades is needed to facilitate new restoration efforts. This study evaluated temporal trends of different aquatic carbon (C) pools of the northern Everglades Protection Area over a 20-year period to gauge historic C cycling patterns. Dissolved inorganic C (DIC), dissolved organic C (DOC), particulate organic C (POC), and surface water carbon dioxide (pCO2(aq)) were investigated between May 1, 1994 and April 30, 2015. Results Annual mean concentrations of DIC, DOC, POC, and pCO2(aq) significantly decreased through time or remained constant across the Water Conservation Areas (WCAs). Overall, the magnitude of the different C pools in the water column significantly differed between regions. Outgassing of CO2 was dynamic across the Everglades ranging from 420 to 2001 kg CO2 year−1. Overall, the historic trend in CO2 flux from the marsh declined across our study area while pCO2(aq) largely remained somewhat constant with the exception of Water Conservation Area 2 which experienced significant declines in pCO2(aq). Particulate OC concentrations were consistent between WCAs, but a significantly decreasing trend in annual POC concentrations was observed. Conclusions Hydrologic condition and nutrient inputs significantly influenced the balance, speciation, and flux of C pools across WCAs suggesting a subsidy-stress response in C dynamics relative to landscape scale responses in nutrient availability. The interplay between nutrient inputs and hydrologic condition exert a driving force on the balance between DIC and DOC production via the metabolism of organic matter which forms the base of the aquatic food web. Along the restoration trajectory as water quality and hydrology continues to improve, it is expected that C pools will respond accordingly.http://link.springer.com/article/10.1186/s13717-017-0110-8Inorganic carbonOrganic carbonCarbon dioxideParticulate carbonHydrologyNutrients |
| spellingShingle | Paul Julian Stefan Gerber Alan L. Wright Binhe Gu Todd Z. Osborne Carbon pool trends and dynamics within a subtropical peatland during long-term restoration Ecological Processes Inorganic carbon Organic carbon Carbon dioxide Particulate carbon Hydrology Nutrients |
| title | Carbon pool trends and dynamics within a subtropical peatland during long-term restoration |
| title_full | Carbon pool trends and dynamics within a subtropical peatland during long-term restoration |
| title_fullStr | Carbon pool trends and dynamics within a subtropical peatland during long-term restoration |
| title_full_unstemmed | Carbon pool trends and dynamics within a subtropical peatland during long-term restoration |
| title_short | Carbon pool trends and dynamics within a subtropical peatland during long-term restoration |
| title_sort | carbon pool trends and dynamics within a subtropical peatland during long term restoration |
| topic | Inorganic carbon Organic carbon Carbon dioxide Particulate carbon Hydrology Nutrients |
| url | http://link.springer.com/article/10.1186/s13717-017-0110-8 |
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