Cold Wave-Induced Reductions in NDII and ChlRE for North-Western Pacific Mangroves Varies with Latitude and Climate History
Mangrove forests growing at the poleward edges of their geographic distribution are occasionally subject to freezing (<0 °C) and cold wave (>0 °C) events. Cold wave effects on mangrove trees are well documented and adaptation to cold stress has been reported for local mangrove populations in t...
Published in: | Remote Sensing |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI AG
2021
|
Subjects: | |
Online Access: | https://doi.org/10.3390/rs13142732 https://doaj.org/article/10286f06d47c4d87a3bd84672f9d6f76 |
id |
ftdoajarticles:oai:doaj.org/article:10286f06d47c4d87a3bd84672f9d6f76 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:10286f06d47c4d87a3bd84672f9d6f76 2023-05-15T17:36:41+02:00 Cold Wave-Induced Reductions in NDII and ChlRE for North-Western Pacific Mangroves Varies with Latitude and Climate History Jonathan Peereman J. Aaron Hogan Teng-Chiu Lin 2021-07-01T00:00:00Z https://doi.org/10.3390/rs13142732 https://doaj.org/article/10286f06d47c4d87a3bd84672f9d6f76 EN eng MDPI AG https://www.mdpi.com/2072-4292/13/14/2732 https://doaj.org/toc/2072-4292 doi:10.3390/rs13142732 2072-4292 https://doaj.org/article/10286f06d47c4d87a3bd84672f9d6f76 Remote Sensing, Vol 13, Iss 2732, p 2732 (2021) mangrove forests cold event disturbance Kandelia obovata normalized difference infrared index chlorophyll red-edge index Science Q article 2021 ftdoajarticles https://doi.org/10.3390/rs13142732 2022-12-31T00:43:58Z Mangrove forests growing at the poleward edges of their geographic distribution are occasionally subject to freezing (<0 °C) and cold wave (>0 °C) events. Cold wave effects on mangrove trees are well documented and adaptation to cold stress has been reported for local mangrove populations in the North Atlantic. However, there is less understanding of effects of cold waves on mangroves in the northern Pacific, especially at the regional scale. Moreover, it is unclear if cold tolerant mangrove species of North Asia display variation in resistance to cold temperatures across their geographic distribution. Using a cold wave event that occurred in January 2021, we evaluated the effects of low temperatures on vegetation index (VI) change (relative to a recent five-year baseline) for mangrove forests dominated by Kandelia obovata (Rhizophoraceae) and Avicennia marina (Acanthaceaee) at the northern edge of their geographical range. We used two VIs derived from Sentinel-2 imagery as indicators for canopy health: the normalized difference infrared index (NDII) and the chlorophyll red-edge index (ChlRE), which reflect forest canopy water content and chlorophyll concentration, respectively. We isolated the cold wave effects on the forest canopy from phenology (i.e., cold wave induced deviation from a five-year baseline) and used multiple linear regression to identify significant climatic predictors for the response of mangrove forest canopy VI change to low temperatures. For areas where the cold wave resulted in temperatures <10 °C, immediate decreases in both VIs were observed, and the VI difference relative to the baseline was generally greater at 30-days after the cold wave than when temperatures initially recovered to baseline values, showing a slight delay in VI response to cold wave-induced canopy damage. Furthermore, the two VIs did not respond consistently suggesting that cold-temperature induced changes in mangrove canopy chlorophyll and water content are affected independently or subject to differing ... Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Pacific Remote Sensing 13 14 2732 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
mangrove forests cold event disturbance Kandelia obovata normalized difference infrared index chlorophyll red-edge index Science Q |
spellingShingle |
mangrove forests cold event disturbance Kandelia obovata normalized difference infrared index chlorophyll red-edge index Science Q Jonathan Peereman J. Aaron Hogan Teng-Chiu Lin Cold Wave-Induced Reductions in NDII and ChlRE for North-Western Pacific Mangroves Varies with Latitude and Climate History |
topic_facet |
mangrove forests cold event disturbance Kandelia obovata normalized difference infrared index chlorophyll red-edge index Science Q |
description |
Mangrove forests growing at the poleward edges of their geographic distribution are occasionally subject to freezing (<0 °C) and cold wave (>0 °C) events. Cold wave effects on mangrove trees are well documented and adaptation to cold stress has been reported for local mangrove populations in the North Atlantic. However, there is less understanding of effects of cold waves on mangroves in the northern Pacific, especially at the regional scale. Moreover, it is unclear if cold tolerant mangrove species of North Asia display variation in resistance to cold temperatures across their geographic distribution. Using a cold wave event that occurred in January 2021, we evaluated the effects of low temperatures on vegetation index (VI) change (relative to a recent five-year baseline) for mangrove forests dominated by Kandelia obovata (Rhizophoraceae) and Avicennia marina (Acanthaceaee) at the northern edge of their geographical range. We used two VIs derived from Sentinel-2 imagery as indicators for canopy health: the normalized difference infrared index (NDII) and the chlorophyll red-edge index (ChlRE), which reflect forest canopy water content and chlorophyll concentration, respectively. We isolated the cold wave effects on the forest canopy from phenology (i.e., cold wave induced deviation from a five-year baseline) and used multiple linear regression to identify significant climatic predictors for the response of mangrove forest canopy VI change to low temperatures. For areas where the cold wave resulted in temperatures <10 °C, immediate decreases in both VIs were observed, and the VI difference relative to the baseline was generally greater at 30-days after the cold wave than when temperatures initially recovered to baseline values, showing a slight delay in VI response to cold wave-induced canopy damage. Furthermore, the two VIs did not respond consistently suggesting that cold-temperature induced changes in mangrove canopy chlorophyll and water content are affected independently or subject to differing ... |
format |
Article in Journal/Newspaper |
author |
Jonathan Peereman J. Aaron Hogan Teng-Chiu Lin |
author_facet |
Jonathan Peereman J. Aaron Hogan Teng-Chiu Lin |
author_sort |
Jonathan Peereman |
title |
Cold Wave-Induced Reductions in NDII and ChlRE for North-Western Pacific Mangroves Varies with Latitude and Climate History |
title_short |
Cold Wave-Induced Reductions in NDII and ChlRE for North-Western Pacific Mangroves Varies with Latitude and Climate History |
title_full |
Cold Wave-Induced Reductions in NDII and ChlRE for North-Western Pacific Mangroves Varies with Latitude and Climate History |
title_fullStr |
Cold Wave-Induced Reductions in NDII and ChlRE for North-Western Pacific Mangroves Varies with Latitude and Climate History |
title_full_unstemmed |
Cold Wave-Induced Reductions in NDII and ChlRE for North-Western Pacific Mangroves Varies with Latitude and Climate History |
title_sort |
cold wave-induced reductions in ndii and chlre for north-western pacific mangroves varies with latitude and climate history |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doi.org/10.3390/rs13142732 https://doaj.org/article/10286f06d47c4d87a3bd84672f9d6f76 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Remote Sensing, Vol 13, Iss 2732, p 2732 (2021) |
op_relation |
https://www.mdpi.com/2072-4292/13/14/2732 https://doaj.org/toc/2072-4292 doi:10.3390/rs13142732 2072-4292 https://doaj.org/article/10286f06d47c4d87a3bd84672f9d6f76 |
op_doi |
https://doi.org/10.3390/rs13142732 |
container_title |
Remote Sensing |
container_volume |
13 |
container_issue |
14 |
container_start_page |
2732 |
_version_ |
1766136249545916416 |