Use of the water-level fluctuation analysis tool (Regcel) in hydrological status assessment of finnish lakes

Keto, Antton; Tarvainen, Anne; Marttunen, Mika; Hellsten, Seppo

doi:10.1007/978-1-4020-9192-6_13

Cited by 4 publications

(4 citation statements)

References 20 publications

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“…In lakes used for hydro‐electricity generation (‘hydro‐lakes'), water level regimes are already influenced by environmental considerations, including bird and fish habitat quality, under national and European law (Copestake, ; Keto et al ., ). Scoters occurred more often at lakes fringed with shallow water.…”

Section: Discussionmentioning

confidence: 97%

Correlates of lake use by breeding common scoters in Scotland

Hancock

Robson

Smith

et al. 2015

Aquatic Conservation

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ABSTRACT1. Many populations of sea-ducks, which typically winter at sea but breed on fresh water, are declining. Numbers of common scoters Melanitta nigra (L.) breeding in Scotland halved between 1995 and 2007, despite most breeding sites having special conservation status. To identify potential conservation measures, a 3-year study was conducted, investigating correlates of lake use by scoters.2. At 26 scoter breeding lakes, food abundance (macroinvertebrates) and foraging habitats (substrates, water depth) were measured, and their associations with scoter lake use explored using multi-model inference. Correlates of macroinvertebrate abundance (water quality, fish abundance) were also investigated.3. Averaged over 3 years (2009 -2011), these lakes held 26.7 (SE 6.3) females, around half the Scottish breeding population. Scoters occurred more often at lakes having abundant large-bodied invertebrates and extensive shallow water. Lakes where the average weight of the largest invertebrate in each sample exceeded 4 mg had 9.2 times (females) or 27 times (broods) more scoter records than other lakes. Lakes where water depths (10 m from the shore) averaged less than 1.3 m had 2.5 times (females) or 12 times (broods) more scoter records than other lakes.4. The abundance of large-bodied invertebrates was greater where small fish species (mostly three-spined sticklebacks Gasterosteus aculeatus) were more common and brown trout Salmo trutta were scarcer.5. Results suggest two approaches to scoter conservation. At lakes used for hydro-electricity generation, water level regimes that provide extensive shallow water should be tested to see if these benefit scoters. At lakes used for trout fishing, trout reduction by increased angling should be trialled, to see if this increases large-invertebrate abundance and scoter use.

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Section: Discussionmentioning

confidence: 97%

Correlates of lake use by breeding common scoters in Scotland

Hancock

Robson

Smith

et al. 2015

Aquatic Conservation

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“…While amplitude has been identified as a good predictor of hydrological status and littoral assemblages in regulated Finnish lakes (Keto et al 2008), lake shape is needed to translate amplitude into water volume and littoral habitat loss. Shallow lakes and littoral zone areas with gentle slopes are more sensitive to water level fluctuations than 1 3 steeper slope lakes (Coops et al 2003), with the potential to expose a high proportion of the lake bottom during a relatively moderate low water event (e.g., Beklioglu et al 2006).…”

Section: Develop Novel Metrics For Quantifying Drawdown Extent Based mentioning

confidence: 99%

Ecological impacts of winter water level drawdowns on lake littoral zones: a review

Carmignani

Roy

2017

Aquat Sci

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with r-selected life history strategies and with functional traits resistant to direct and indirect drawdown effects. Fish assemblages, though less directly affected by winter drawdowns (except where there is critically low dissolved oxygen), experience negative effects via indirect pathways like decreased food resources and spawning habitat. We identify eight general research gaps to guide future research that could improve our understanding about the complex effects of winter drawdowns on littoral zone ecology.

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“…Some methods, however, aim to characterize the hydrology, which may change owing to human modification to tributaries or to the lake itself. These include the Dundee Hydrological Regime Alteration Method (DHRAM; developed initially for rivers and with a specific module for lakes; Black et al, ; Black, Rowan, Duck, Bragg, & Clelland, ) and the Regcel model (Keto, Tarvainen, Marttunen, & Hellsten, ). Using biologically relevant variables makes it possible to measure the difference between a degraded system and natural conditions.…”

Section: Introductionmentioning

confidence: 99%

Developing a standard approach for assessing the hydromorphology of lakes in Europe

Boon

Argillier²,

Boggero

et al. 2019

Aquatic Conservation

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Methods for assessing the hydrology and morphology of lakes (‘hydromorphology’) are needed for reporting under national and international legislation, as well as to assist in lake management and restoration. Despite this, no consistent approaches have been developed around Europe for monitoring lake hydromorphology. To address this need, representatives from 12 countries met at a series of workshops to develop two protocols for monitoring, published under the auspices of the European Committee for Standardization (CEN). The first standard (EN 16039) describes six categories for assessing lake hydromorphology: hydraulics, morphometry, bedforms/landforms and substrate, connectivity and continuity, and land cover. The second standard (EN 16870) sets out a scoring system for assessing the degree of modification of lake hydromorphology, which was designed, tested and refined using data from 127 lakes in seven European countries. The CEN standards focus on four lake zones—riparian, shore, littoral, and open water—but recognize the importance of considering lakes within their wider catchment context. The field techniques described are based largely on Lake Habitat Survey but also rely on existing databases, maps and remote‐sensing data. These standards are aimed at scientists, conservation bodies and environmental regulators, and are relevant not only for monitoring lakes under the Water Framework Directive, but also for contributing to programmes of lake conservation. For example, in the UK, parts of the CEN standards have been incorporated within the methods used for monitoring and reporting on the condition of Special Areas of Conservation (under the Habitats Directive) and Sites of Special Scientific Interest under national legislation. It is hoped that this pan‐European approach will improve the ability to compare data across many countries, and ultimately ensure that the results of monitoring are translated into measures for improving the hydromorphological condition of lakes and the biological communities they contain.

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Use of the water-level fluctuation analysis tool (Regcel) in hydrological status assessment of finnish lakes

Cited by 4 publications

References 20 publications

Correlates of lake use by breeding common scoters in Scotland

Correlates of lake use by breeding common scoters in Scotland

Ecological impacts of winter water level drawdowns on lake littoral zones: a review

Developing a standard approach for assessing the hydromorphology of lakes in Europe

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