Decreasing carbonate load of seagrass leaves with increasing latitude
Seagrass meadows play a significant role in the formation of carbonate sediments, serving as a substrate for carbonate-producing epiphyte communities. The magnitude of the epiphyte load depends on plant structural and physiological parameters, related to the time available for epiphyte colonization....
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ftunivalgarve:oai:sapientia.ualg.pt:10400.1/14151 2023-05-15T17:52:03+02:00 Decreasing carbonate load of seagrass leaves with increasing latitude Mazarrasa, Ines Marba, Nuria Krause-Jensen, Dorte Kennedy, Hilary Santos, Rui Lovelock, Catherine E. Duarte, Carlos M. 2019-12 http://hdl.handle.net/10400.1/14151 https://doi.org/10.1016/j.aquabot.2019.103147 eng eng Elsevier 0304-3770 1879-1522 http://hdl.handle.net/10400.1/14151 doi:10.1016/j.aquabot.2019.103147 restrictedAccess Ocean Acidification Thalassia-Testudinum Mg-Calcite Temperature Seawater Sediments Meadows Water Mud Communities article 2019 ftunivalgarve https://doi.org/10.1016/j.aquabot.2019.103147 2022-05-30T08:49:12Z Seagrass meadows play a significant role in the formation of carbonate sediments, serving as a substrate for carbonate-producing epiphyte communities. The magnitude of the epiphyte load depends on plant structural and physiological parameters, related to the time available for epiphyte colonization. Yet, the carbonate accumulation is likely to also depend on the carbonate saturation state of seawater (Omega) that tends to decrease as latitude increases due to decreasing temperature and salinity. A decrease in carbonate accumulation with increasing latitude has already been demonstrated for other carbonate producing communities. The aim of this study was to assess whether there was any correlation between latitude and the epiphyte carbonate load and net carbonate production rate on seagrass leaves. Shoots from 8 different meadows of the Zostera genus distributed across a broad latitudinal range (27 degrees S to up to 64 degrees N) were sampled along with measurements of temperature and Omega. The Omega within meadows significantly decreased as latitude increased and temperature decreased. The mean carbonate content and load on seagrass leaves ranged from 17% DW to 36% DW and 0.4-2.3 mg CO3 cm(-2), respectively, and the associated mean carbonate net production rate varied from 0.007 to 0.9 mg CO3 cm(-2) d(-1). Mean carbonate load and net production rates decreased from subtropical and tropical, warmer regions towards subpolar latitudes, consistent with the decrease in Omega. These results point to a latitudinal variation in the contribution of seagrass to the accumulation of carbonates in their sediments which affect important processes occurring in seagrass meadows, such as nutrient cycling, carbon sequestration and sediment accretion. Government of the Balearic Islands COCOA project under the BONUS program - EU 7th framework programEuropean Union (EU) Danish Research CouncilDet Frie Forskningsrad (DFF) Foundation of Science and Technology of Portugal (FCT) [PTDC/MAR-EST/3223/2014] ... Article in Journal/Newspaper Ocean acidification Universidade do Algarve: Sapienta Aquatic Botany 159 103147 |
institution |
Open Polar |
collection |
Universidade do Algarve: Sapienta |
op_collection_id |
ftunivalgarve |
language |
English |
topic |
Ocean Acidification Thalassia-Testudinum Mg-Calcite Temperature Seawater Sediments Meadows Water Mud Communities |
spellingShingle |
Ocean Acidification Thalassia-Testudinum Mg-Calcite Temperature Seawater Sediments Meadows Water Mud Communities Mazarrasa, Ines Marba, Nuria Krause-Jensen, Dorte Kennedy, Hilary Santos, Rui Lovelock, Catherine E. Duarte, Carlos M. Decreasing carbonate load of seagrass leaves with increasing latitude |
topic_facet |
Ocean Acidification Thalassia-Testudinum Mg-Calcite Temperature Seawater Sediments Meadows Water Mud Communities |
description |
Seagrass meadows play a significant role in the formation of carbonate sediments, serving as a substrate for carbonate-producing epiphyte communities. The magnitude of the epiphyte load depends on plant structural and physiological parameters, related to the time available for epiphyte colonization. Yet, the carbonate accumulation is likely to also depend on the carbonate saturation state of seawater (Omega) that tends to decrease as latitude increases due to decreasing temperature and salinity. A decrease in carbonate accumulation with increasing latitude has already been demonstrated for other carbonate producing communities. The aim of this study was to assess whether there was any correlation between latitude and the epiphyte carbonate load and net carbonate production rate on seagrass leaves. Shoots from 8 different meadows of the Zostera genus distributed across a broad latitudinal range (27 degrees S to up to 64 degrees N) were sampled along with measurements of temperature and Omega. The Omega within meadows significantly decreased as latitude increased and temperature decreased. The mean carbonate content and load on seagrass leaves ranged from 17% DW to 36% DW and 0.4-2.3 mg CO3 cm(-2), respectively, and the associated mean carbonate net production rate varied from 0.007 to 0.9 mg CO3 cm(-2) d(-1). Mean carbonate load and net production rates decreased from subtropical and tropical, warmer regions towards subpolar latitudes, consistent with the decrease in Omega. These results point to a latitudinal variation in the contribution of seagrass to the accumulation of carbonates in their sediments which affect important processes occurring in seagrass meadows, such as nutrient cycling, carbon sequestration and sediment accretion. Government of the Balearic Islands COCOA project under the BONUS program - EU 7th framework programEuropean Union (EU) Danish Research CouncilDet Frie Forskningsrad (DFF) Foundation of Science and Technology of Portugal (FCT) [PTDC/MAR-EST/3223/2014] ... |
format |
Article in Journal/Newspaper |
author |
Mazarrasa, Ines Marba, Nuria Krause-Jensen, Dorte Kennedy, Hilary Santos, Rui Lovelock, Catherine E. Duarte, Carlos M. |
author_facet |
Mazarrasa, Ines Marba, Nuria Krause-Jensen, Dorte Kennedy, Hilary Santos, Rui Lovelock, Catherine E. Duarte, Carlos M. |
author_sort |
Mazarrasa, Ines |
title |
Decreasing carbonate load of seagrass leaves with increasing latitude |
title_short |
Decreasing carbonate load of seagrass leaves with increasing latitude |
title_full |
Decreasing carbonate load of seagrass leaves with increasing latitude |
title_fullStr |
Decreasing carbonate load of seagrass leaves with increasing latitude |
title_full_unstemmed |
Decreasing carbonate load of seagrass leaves with increasing latitude |
title_sort |
decreasing carbonate load of seagrass leaves with increasing latitude |
publisher |
Elsevier |
publishDate |
2019 |
url |
http://hdl.handle.net/10400.1/14151 https://doi.org/10.1016/j.aquabot.2019.103147 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
0304-3770 1879-1522 http://hdl.handle.net/10400.1/14151 doi:10.1016/j.aquabot.2019.103147 |
op_rights |
restrictedAccess |
op_doi |
https://doi.org/10.1016/j.aquabot.2019.103147 |
container_title |
Aquatic Botany |
container_volume |
159 |
container_start_page |
103147 |
_version_ |
1766159375245770752 |