Temporal–Spatial Variations in Physicochemical Factors and Assessing Water Quality Condition in River–Lake System of Chaohu Lake Basin, China DOI Open Access
Wu Li, Kai Liu, Ziqi Wang

et al.

Sustainability, Journal Year: 2025, Volume and Issue: 17(5), P. 2182 - 2182

Published: March 3, 2025

Eutrophication and algal blooms have frequently occurred in Chaohu Lake. Water parameters interact with eutrophication blooms. However, there are few studies on the spatial–temporal characteristics of water Lake Basin. To assess quality its seven surrounding rivers, 132 samples from 33 sites were collected seasonally September 2019 to July 2020, 14 physicochemical detected. Our results showed that urban rivers had highest nutrients, chemical oxygen demand (CODMn, 6.30 ± 0.80 mg/L), five-day biological (BOD5, 4.51 0.42 chlorophyll a concentration (Chl a, 54.88 39.81 μg/L); forested higher transparency (137.83 18.52 cm), lowest CODMn (4.02 0.20 BOD5 (1.42 0.14 Chl (7.18 1.41 agricultural mixed intermediate. Generally, was “good” “light-eutrophic” according index trophic level index. The order good worst season spring > autumn summer winter. These implied still main source eutrophic nutrients Lake, control pollutants is core management

Language: Английский

No biotic homogenisation across decades but consistent effects of landscape position and pH on macrophyte communities in boreal lakes DOI Creative Commons
Marja Lindholm, Janne Alahuhta, Jani Heino

et al.

Ecography, Journal Year: 2019, Volume and Issue: 43(2), P. 294 - 305

Published: Oct. 22, 2019

It has been predicted that spatial beta diversity shows a decreasing trend in the Anthropocene due to increasing human impact, causing biotic homogenisation. We aimed discover if vascular aquatic macrophyte communities show different patterns relation land use and environmental characteristics decades from 1940s 2010s. structures differ between species‐, phylogeny‐ functional‐based diversity. used presence–absence data of macrophytes five small boreal lakes. utilized generalised dissimilarity modelling analyse gradients. found lake elevation pH were most important variables each decade, while was not particularly shaping patterns. did find signs our study area during past 70 yr. either homogenisation or differentiation (taxonomic, phylogenetic functional). Vascular showed only slightly impact across decades. The facets diverged other. Lake position landscape, reflecting both natural connectivity characteristics, explained diversity, probably because faced modest changes 2010s when compared globally. Our highlights fact is an unambiguous process acting similarly at all temporal scales environments organism groups.

Language: Английский

Citations

49

Temporal beta diversity of lake plants is determined by concomitant changes in environmental factors across decades DOI Creative Commons
Marja Lindholm, Janne Alahuhta, Jani Heino

et al.

Journal of Ecology, Journal Year: 2020, Volume and Issue: 109(2), P. 819 - 832

Published: Sept. 23, 2020

Abstract To comprehensively understand the impact of anthropogenic activities on biodiversity, we must how biodiversity has changed over time and what are underlying processes. A growing body evidence shown that beta diversity reveals more about temporal changes in compared with alpha diversity. Temporal indicates, for example, degrees change species composition at single locations through time. We examined whether freshwater plant communities showed different patterns relation to concomitant environmental conditions across decades. do this, used presence–absence data lake plants five decades (1940s–2010s) from southern Finland calculated indices (TBI) each between pairs whole community, hydrophytes helophytes. get insights into possible processes behind observed trends, decomposed TBIs contributed by either losses or gains species. related their loss gain components landscape position variables. Based comparisons survey decade pairs, aquatic was modest Hydrophyte assemblages have than helophyte assemblages. The main occurred 1940s 1970s, when new dominant process lakes throughout landscape. Following period, there only changes, but 2000s 2010s, played a key role explaining TBI. Our results relying two points can result limited knowledge ecological phenomenon under study and, an exceptional year terms weather hinder detecting overall long‐term trends compositional changes. Therefore, future studies should try combine several overcome typical limitations information.

Language: Английский

Citations

42

Agricultural activities compromise ecosystem health and functioning of rivers: Insights from multivariate and multimetric analyses of macroinvertebrate assemblages DOI
You Zhang, Jonathan Y.S. Leung, Ying Zhang

et al.

Environmental Pollution, Journal Year: 2021, Volume and Issue: 275, P. 116655 - 116655

Published: Feb. 5, 2021

Language: Английский

Citations

35

Multiple anthropogenic stressors influence the taxonomic and functional homogenization of macroinvertebrate communities on the mainstream of an urban-agricultural river in China DOI
Yu Ma, Zongling Yu,

Shiqi Jia

et al.

Journal of Environmental Management, Journal Year: 2023, Volume and Issue: 341, P. 118017 - 118017

Published: May 5, 2023

Language: Английский

Citations

15

Responses of phytoplankton and periphyton community structure to an anthropic eutrophication gradient in tropical high-altitude Lake Titicaca DOI Creative Commons
William G. Lanza, Viviana Cruz Hernández, Darío Achá

et al.

Journal of Great Lakes Research, Journal Year: 2024, Volume and Issue: 50(2), P. 102294 - 102294

Published: Jan. 21, 2024

Language: Английский

Citations

5

Mapping of Major Land-Use Changes in the Kolleru Lake Freshwater Ecosystem by Using Landsat Satellite Images in Google Earth Engine DOI Open Access
Meena Kumari Kolli, Christian Opp, Daniel Karthe

et al.

Water, Journal Year: 2020, Volume and Issue: 12(9), P. 2493 - 2493

Published: Sept. 7, 2020

India’s largest freshwater ecosystem of the Kolleru Lake has experienced severe threats by land-use changes, including construction illegal fishponds around lake area over past five decades. Despite efforts to protect and restore its riparian zones, environmental pressures have increased time. The present study provides a synthesis human activities through major changes both before after restoration measures. For this purpose, archives all Landsat imageries from last three decades were used detect land cover changes. Using Google Earth Engine cloud platform, different scenarios classified for year (1999), 2008 immediately restoration, 2018, i.e., current situation one decade afterward. Additionally, NDVI (Normalized Difference Vegetation Index) NDWI Water indices identify dynamics. results show that was successful; consequently, decade, transformed into previous state (i.e., 1999 situation). In 1999, 29.7% occupied fishponds, and, sustainable 27.7% almost reaching extent situation. On hand, aquaculture is most promising sources income, but there also limited awareness negative impacts among local residents. other political commitment weak, integrated approaches considering stakeholders are lacking. Nevertheless, alterations water use, increasing nutrient concentrations, sediment inputs basin reached level at which they threaten biodiversity functionality wetland degree immediate action necessary prevent irreversible degradation.

Language: Английский

Citations

33

Biodiversity buffers the impact of eutrophication on ecosystem functioning of submerged macrophytes on the Yunnan-Guizhou Plateau, Southwest China DOI
Hao Wang, Xiaolin Zhang,

Hang Shan

et al.

Environmental Pollution, Journal Year: 2022, Volume and Issue: 314, P. 120210 - 120210

Published: Sept. 25, 2022

Language: Английский

Citations

22

Responses of macroinvertebrate functional trait structure to river damming: From within-river to basin-scale patterns DOI
Jun Wang,

Simin Bao,

Kai Zhang

et al.

Environmental Research, Journal Year: 2023, Volume and Issue: 220, P. 115255 - 115255

Published: Jan. 9, 2023

Language: Английский

Citations

12

Spatial and seasonal fish assemblage dynamics in a heavily urbanized estuary affected by interbasin water transference (Northeast, Brazil) DOI
Leonardo Mesquita Pinto, Ronaldo César Gurgel‐Lourenço, Luisa Marcellah de Jesus Santos Silva

et al.

Aquatic Sciences, Journal Year: 2025, Volume and Issue: 87(2)

Published: Jan. 13, 2025

Language: Английский

Citations

0

Urbanization leads to convergent succession and homogenization of phytoplankton functional traits in a subtropical watershed over 11 years DOI
Yifan Lu, Lei Jin, Huihuang Chen

et al.

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121097 - 121097

Published: Feb. 1, 2025

Language: Английский

Citations

0