Physicochemical and biological variables measured in 110 national monitoring lakes between 1992 and 2022.
type: Dataset
distribution: Landing page for the dataset
description: Physicochemical and biological data 110 national monitoring lakes for the years 1992 to 2022 were downloaded from the data host https://miljodata.slu.se/MVM/. Climate data were extracted from Climate Research Unit gridded Time Series dataset (version 4.06; Harris et al., 2020; https://crudata.uea.ac.uk/cru/data/hrg/) Eight data sets were compiled: 1. Physicochemical variables from surface water samples (10 variables): EU id Year Colour_absorbance_420nm Ca mg/l Conductivity_mS/m pH TOC mg/l C DIN_ µg/l_N TP_ µg/l_P Water_Temperature_°C. Lake physicochemical and climate data were log10(x + 1) transformed to approximate normal distribution prior to the analyses. 2. Climate data: annual mean air temperature (°C) and precipitation (mm per month for each lake in each year) extracted from the interpolated Climate Research Unit gridded Time Series dataset (version 4.06; Harris et al., 2020; https://crudata.uea.ac.uk/cru/data/hrg/) 3. Phytoplankton taxon abundances (biovolumes) for individual taxa collected in August (n = 780 taxa). Biovolumes were Hellinger transformed. 4. Phytoplankton metrics (n=5): number of taxa, taxon biovolumes, diversity (Hills N2), % cyanobacteria and between-year Euclidean distance*. 5. Littoral taxon abundances (numbers per unit effort) for samples collected in October/November (n=681 taxa). Abundances were Hellinger transformed. 6. Littoral metrics (n=4): number of taxa, total abundance, diversity (N2) and between-year Euclidean distance 7. Profundal taxa abundances (individual per m2) for samples collected in October/November (n=321 taxa). Abundances were Hellinger transformed. 8. Profundal metrics (n=4): number of taxa, total abundance, diversity (N2) and between-year Euclidean distance. * Between-year Euclidean distances were calculated using detrended correspondence analysis axes 1-3 as as d=√((x2 – x1)² + (y2 – y1)²) + (z2 – z1)²), where x1, y1, z1 represent DC axis scores one, two and three, respectively, at any year and x2, y2, z2 represen…
modified: 2025-07-01T11:42:18.425022Z
issued: 2025-06-10T11:03:00.95504Z
publisher: Swedish University of Agricultural Sciences
theme: ENVI
theme: TECH
access rights: PUBLIC
qualified attribution: Attribution
  had role: principalInvestigator
  agent: Richard Johnson
    type: Agent
    account: https://orcid.org/0000-0001-7979-6563
    type: PrivateIndividual(s)
keyword: LAKE/POND
keyword: freshwater biology
keyword: freshwater ecosystem
keyword: sötvattensekosystem @sv
keyword: freshwater monitoring
keyword: freshwater
keyword: sötvatten @sv
keyword: environmental monitoring
keyword: miljöövervakning @sv
keyword: Environmental monitoring facilities
keyword: Anläggningar för miljöövervakning @sv
keyword: mystacides longicornis/nigra
keyword: mystacides nigra
keyword: naididae
keyword: nebrioporus depressus
keyword: nematoda
keyword: nemoura
keyword: Acanthoceras zachariasii
keyword: acanthosphaera zachariasii
keyword: actinastrum aciculare
keyword: actinastrum hantzschii
keyword: acutodesmus
keyword: acutodesmus dimorphus
keyword: amphidinium
keyword: anabaena
keyword: anabaenopsis
keyword: anathece
keyword: anathece bachmannii
keyword: anathece clathrata
keyword: anathece minutissima
keyword: anathece smithii
keyword: ankistrodesmus
keyword: ankistrodesmus falcatus
keyword: ankistrodesmus fusiformis
keyword: ankistrodesmus gracilis
keyword: ankistrodesmus nannoselene
keyword: ankistrodesmus spiralis
keyword: ankyra
keyword: ankyra ancora
keyword: ankyra judayi
keyword: ankyra lanceolata
keyword: aphanizomenon
keyword: aphanizomenon flexuosum
keyword: aphanizomenon flosaquae
keyword: aphanizomenon gracile
keyword: aphanizomenon klebahnii
keyword: aphanizomenon yezoense
keyword: aphanocapsa
keyword: aphanocapsa conferta
keyword: aphanocapsa delicatissima
keyword: aphanocapsa holsatica s.lat.
keyword: aphanocapsa incerta
keyword: aphanocapsa planctonica
keyword: aphanothece
keyword: astasia
keyword: asterionella
keyword: asterionella formosa
keyword: asterionella ralfsii
keyword: aulacoseira
keyword: aulacoseira alpigena
keyword: aulacoseira ambigua
keyword: aulacoseira distans
keyword: aulacoseira distans s.lat.
keyword: aulacoseira granulata
keyword: aulacoseira granulata var. angustissima
keyword: aulacoseira islandica
keyword: aulacoseira islandica subsp. helvetica
keyword: aulacoseira italica
keyword: aulacoseira italica var. tenuissima
keyword: aulacoseira pseudodistans

PeriodOfTime
start date: 1992
end date: 2022

Landing page for the dataset
type: Distribution
title: Landningssida för datasetet @sv
access URL: Physicochemical and biological variables measured in 110 national monitoring lakes between 1992 and 2022.
availability: stable

Swedish University of Agricultural Sciences
type: Agent
name: Sveriges lantbruksuniversitet @sv
type: Academia-ScientificOrganisation
source: 02yy8x990

Sweden
type: Location
label: Sverige @sv

Individual
fn: SLU Arkiv