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Recent mechanisms of surface ecological changes driven by climate change and human activities in Lake Biwa, Japan.

Authors :
Gao, Botong
Chen, Meng
Hao, Haichao
Yamashiki, Yosuke Alexandre
Ishikawa, Kanako
Jiao, Chunmeng
Cai, Ji
Ismail, Sadaf
Source :
Frontiers in Ecology & Evolution; 2023, p1-1, 11p
Publication Year :
2023

Abstract

Lake Biwa, Japan represents a crucial example of the complex climatic and anthropogenic drivers influencing lake ecological transformations, vital to informing Sustainable Development Goals globally. This study utilizes 20022022 Landsat, MODIS and in situ Lake Biwa monitoring data to analyze surface layer spatiotemporal dynamics across interrelated vegetation, water quality and meteorological indicators -- encompassing Normalized Difference Vegetation Index (NDVI), nitrogen (N), phosphorus (P), chlorophyll-a (Chi) and water temperature (W-TEM). Upward NDVI raster trends were found over 20 years alongside prevalent N, P and Chl declines -- although some increases did occur spatially in P and Chl -- while W-TEM mostly rose lakewide. Southwest-northeast gradients typified distributions. Further attribution analyses revealed W-TEM as the primary N, P and Chl driver, while agricultural expansion and urbanization mediated crucial N and P changes. Moreover, wind speed (WS), Crop, W-TEM, minimum temperature (TMMN), Chl and N constituted top NDVI raster influence factors respectively. These novel integrated models quantifying Lake Biwa ecological responses to multifaceted environmental change provide new perspectives to inform sustainable management of Lake Biwa itself and critical freshwater resources worldwide. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
2296701X
Database :
Complementary Index
Journal :
Frontiers in Ecology & Evolution
Publication Type :
Academic Journal
Accession number :
174452309
Full Text :
https://doi.org/10.3389/fevo.2023.1335990