Growth Interruptions in Arctic Rhodoliths Correspond to Water Depth and Rhodolith Morphology
Coralline algae that form rhodoliths are widespread globally and their skeletal growth patterns have been used as (paleo-) environmental proxies in a variety of studies. However, growth interruptions (hiati) within their calcareous skeletons are regarded as problematic in this context. Here we inves...
Published in: | Minerals |
---|---|
Main Authors: | , , , , |
Format: | Text |
Language: | English |
Published: |
Multidisciplinary Digital Publishing Institute
2021
|
Subjects: | |
Online Access: | https://doi.org/10.3390/min11050538 |
id |
ftmdpi:oai:mdpi.com:/2075-163X/11/5/538/ |
---|---|
record_format |
openpolar |
spelling |
ftmdpi:oai:mdpi.com:/2075-163X/11/5/538/ 2023-08-20T04:04:22+02:00 Growth Interruptions in Arctic Rhodoliths Correspond to Water Depth and Rhodolith Morphology Moritz Schlüter Ines Pyko Max Wisshak Christian Schulbert Sebastian Teichert agris 2021-05-19 application/pdf https://doi.org/10.3390/min11050538 EN eng Multidisciplinary Digital Publishing Institute Biomineralization and Biominerals https://dx.doi.org/10.3390/min11050538 https://creativecommons.org/licenses/by/4.0/ Minerals; Volume 11; Issue 5; Pages: 538 coralline algae environmental proxies growth increments polar carbonates Svalbard X-ray micro-computed tomography Text 2021 ftmdpi https://doi.org/10.3390/min11050538 2023-08-01T01:45:00Z Coralline algae that form rhodoliths are widespread globally and their skeletal growth patterns have been used as (paleo-) environmental proxies in a variety of studies. However, growth interruptions (hiati) within their calcareous skeletons are regarded as problematic in this context. Here we investigated how hiati in the growth of Arctic rhodoliths from the Svalbard archipelago correspond to their environment and morphology. Using X-ray micro-computed tomography and stepwise model selections, we found that rhodoliths from deeper waters are subject to more frequent hiatus formation. In addition, rhodoliths with a higher sphericity (i.e., roundness) are less often affected by such growth interruptions. We conclude that these correlations are mainly regulated by hydrodynamics, because, in deeper waters, rhodoliths are not turned frequently enough to prevent a dieback of coralline algal thalli forming on the underside of the rhodolith. In this coherence, spheroidal rhodoliths are turned more easily, therefore shortening the amount of time between turnover events. Moreover, the incidence of light is more advantageous in shallower waters where rhodoliths exhibit a greater share of their surface to diffused ambient light, thus enabling thallus growth also on the down-facing surface of the rhodoliths. In consequence, information on the frequency of hiatus formation combined with rhodolith morphology might serve as a valuable proxy for (paleo-)environmental reconstructions in respect to light availability and the hydrodynamic regime. Text Arctic Svalbard MDPI Open Access Publishing Arctic Svalbard Svalbard Archipelago Minerals 11 5 538 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
coralline algae environmental proxies growth increments polar carbonates Svalbard X-ray micro-computed tomography |
spellingShingle |
coralline algae environmental proxies growth increments polar carbonates Svalbard X-ray micro-computed tomography Moritz Schlüter Ines Pyko Max Wisshak Christian Schulbert Sebastian Teichert Growth Interruptions in Arctic Rhodoliths Correspond to Water Depth and Rhodolith Morphology |
topic_facet |
coralline algae environmental proxies growth increments polar carbonates Svalbard X-ray micro-computed tomography |
description |
Coralline algae that form rhodoliths are widespread globally and their skeletal growth patterns have been used as (paleo-) environmental proxies in a variety of studies. However, growth interruptions (hiati) within their calcareous skeletons are regarded as problematic in this context. Here we investigated how hiati in the growth of Arctic rhodoliths from the Svalbard archipelago correspond to their environment and morphology. Using X-ray micro-computed tomography and stepwise model selections, we found that rhodoliths from deeper waters are subject to more frequent hiatus formation. In addition, rhodoliths with a higher sphericity (i.e., roundness) are less often affected by such growth interruptions. We conclude that these correlations are mainly regulated by hydrodynamics, because, in deeper waters, rhodoliths are not turned frequently enough to prevent a dieback of coralline algal thalli forming on the underside of the rhodolith. In this coherence, spheroidal rhodoliths are turned more easily, therefore shortening the amount of time between turnover events. Moreover, the incidence of light is more advantageous in shallower waters where rhodoliths exhibit a greater share of their surface to diffused ambient light, thus enabling thallus growth also on the down-facing surface of the rhodoliths. In consequence, information on the frequency of hiatus formation combined with rhodolith morphology might serve as a valuable proxy for (paleo-)environmental reconstructions in respect to light availability and the hydrodynamic regime. |
format |
Text |
author |
Moritz Schlüter Ines Pyko Max Wisshak Christian Schulbert Sebastian Teichert |
author_facet |
Moritz Schlüter Ines Pyko Max Wisshak Christian Schulbert Sebastian Teichert |
author_sort |
Moritz Schlüter |
title |
Growth Interruptions in Arctic Rhodoliths Correspond to Water Depth and Rhodolith Morphology |
title_short |
Growth Interruptions in Arctic Rhodoliths Correspond to Water Depth and Rhodolith Morphology |
title_full |
Growth Interruptions in Arctic Rhodoliths Correspond to Water Depth and Rhodolith Morphology |
title_fullStr |
Growth Interruptions in Arctic Rhodoliths Correspond to Water Depth and Rhodolith Morphology |
title_full_unstemmed |
Growth Interruptions in Arctic Rhodoliths Correspond to Water Depth and Rhodolith Morphology |
title_sort |
growth interruptions in arctic rhodoliths correspond to water depth and rhodolith morphology |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2021 |
url |
https://doi.org/10.3390/min11050538 |
op_coverage |
agris |
geographic |
Arctic Svalbard Svalbard Archipelago |
geographic_facet |
Arctic Svalbard Svalbard Archipelago |
genre |
Arctic Svalbard |
genre_facet |
Arctic Svalbard |
op_source |
Minerals; Volume 11; Issue 5; Pages: 538 |
op_relation |
Biomineralization and Biominerals https://dx.doi.org/10.3390/min11050538 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/min11050538 |
container_title |
Minerals |
container_volume |
11 |
container_issue |
5 |
container_start_page |
538 |
_version_ |
1774714751353356288 |