Carbon storage and sediment trapping by Egeria densa Planch., a globally invasive, freshwater macrophyte
Published by Elsevier B.V..
Invasive plants have long been recognized for altering ecosystem properties, but their long-term impacts on ecosystem processes remain largely unknown. In this study, we determined the impact of Egeria densa Planch, a globally invasive freshwater macrophyte, on sedimentation processes in a large tidal freshwater region. We measured carbon accumulation (CARs) and inorganic sedimentation rates in submerged aquatic vegetation SAV dominated by E. densa and compared these rates to those of adjacent tidal freshwater marshes. Study sites were chosen along a range of hydrodynamic conditions in the Sacramento-San Joaquin Delta of California, USA, where E. densa has been widespread since 1990. Cores were analyzed for bulk density, % inorganic matter, % organic carbon, 210Pb, and 137Cs. Our results show that E. densa patches constitute sinks for both "blue carbon" and inorganic sediment. Compared to marshes, E. densa patches have greater inorganic sedimentation rates (E. densa: 1103-5989 g m-2 yr-1, marsh: 393-1001 g m-2 yr-1, p < 0.01) and vertical accretion rates (E. densa: 0.4-1.3 cm yr-1, marsh: 0.3-0.5 cm yr-1, p < 0.05), but similar CARs (E. densa: 59-242 g C m-2 yr-1, marsh: 109-169 g C m-2 yr-1, p > 0.05). Sediment stored by E. densa likely reduces the resilience of adjacent marshes by depleting the sediment available for marsh-building. Because of its harmful traits, E. densa is not a suitable candidate for mitigating carbon pollution; however, currently invaded habitats may already contain a meaningful component of regional carbon budgets. Our results strongly suggest that E. densa patches are sinks for carbon and inorganic sediment throughout its global range, raising questions about how invasive SAV is altering biogeochemical cycling and sediment dynamics across freshwater ecosystems.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2021 |
|---|---|
| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:755 |
|---|---|
| Enthalten in: |
The Science of the total environment - 755(2021), Pt 1 vom: 10. Feb., Seite 142602 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Drexler, Judith Z [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
7440-44-0 |
|---|
| Anmerkungen: |
Date Completed 23.12.2020 Date Revised 23.12.2020 published: Print-Electronic Citation Status MEDLINE |
|---|
| doi: |
10.1016/j.scitotenv.2020.142602 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM31913122X |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM31913122X | ||
| 003 | DE-627 | ||
| 005 | 20231225170812.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231225s2021 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1016/j.scitotenv.2020.142602 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1063.xml |
| 035 | |a (DE-627)NLM31913122X | ||
| 035 | |a (NLM)33348484 | ||
| 035 | |a (PII)S0048-9697(20)36131-3 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Drexler, Judith Z |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Carbon storage and sediment trapping by Egeria densa Planch., a globally invasive, freshwater macrophyte |
| 264 | 1 | |c 2021 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 23.12.2020 | ||
| 500 | |a Date Revised 23.12.2020 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Published by Elsevier B.V. | ||
| 520 | |a Invasive plants have long been recognized for altering ecosystem properties, but their long-term impacts on ecosystem processes remain largely unknown. In this study, we determined the impact of Egeria densa Planch, a globally invasive freshwater macrophyte, on sedimentation processes in a large tidal freshwater region. We measured carbon accumulation (CARs) and inorganic sedimentation rates in submerged aquatic vegetation SAV dominated by E. densa and compared these rates to those of adjacent tidal freshwater marshes. Study sites were chosen along a range of hydrodynamic conditions in the Sacramento-San Joaquin Delta of California, USA, where E. densa has been widespread since 1990. Cores were analyzed for bulk density, % inorganic matter, % organic carbon, 210Pb, and 137Cs. Our results show that E. densa patches constitute sinks for both "blue carbon" and inorganic sediment. Compared to marshes, E. densa patches have greater inorganic sedimentation rates (E. densa: 1103-5989 g m-2 yr-1, marsh: 393-1001 g m-2 yr-1, p < 0.01) and vertical accretion rates (E. densa: 0.4-1.3 cm yr-1, marsh: 0.3-0.5 cm yr-1, p < 0.05), but similar CARs (E. densa: 59-242 g C m-2 yr-1, marsh: 109-169 g C m-2 yr-1, p > 0.05). Sediment stored by E. densa likely reduces the resilience of adjacent marshes by depleting the sediment available for marsh-building. Because of its harmful traits, E. densa is not a suitable candidate for mitigating carbon pollution; however, currently invaded habitats may already contain a meaningful component of regional carbon budgets. Our results strongly suggest that E. densa patches are sinks for carbon and inorganic sediment throughout its global range, raising questions about how invasive SAV is altering biogeochemical cycling and sediment dynamics across freshwater ecosystems | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Blue carbon | |
| 650 | 4 | |a Carbon sequestration | |
| 650 | 4 | |a Ecosystem engineer | |
| 650 | 4 | |a Invasive plant | |
| 650 | 4 | |a Marsh | |
| 650 | 4 | |a Sediment | |
| 650 | 7 | |a Carbon |2 NLM | |
| 650 | 7 | |a 7440-44-0 |2 NLM | |
| 700 | 1 | |a Khanna, Shruti |e verfasserin |4 aut | |
| 700 | 1 | |a Lacy, Jessica R |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t The Science of the total environment |d 1972 |g 755(2021), Pt 1 vom: 10. Feb., Seite 142602 |w (DE-627)NLM000215562 |x 1879-1026 |7 nnns |
| 773 | 1 | 8 | |g volume:755 |g year:2021 |g number:Pt 1 |g day:10 |g month:02 |g pages:142602 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1016/j.scitotenv.2020.142602 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 755 |j 2021 |e Pt 1 |b 10 |c 02 |h 142602 | ||