1
|
Loerracher AK, Schmidt J, Ebke P, Schmolke A, Abi-Akar F, Galic N, Ashauer R. Characterization of patterns and variability in the dynamics of outdoor aquatic mesocosms: exploring the capabilities and challenges in data supporting aquatic system models. ECOTOXICOLOGY (LONDON, ENGLAND) 2023; 32:782-801. [PMID: 37491685 PMCID: PMC10449964 DOI: 10.1007/s10646-023-02685-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/05/2023] [Indexed: 07/27/2023]
Abstract
Aquatic mesocosms are complex test systems used within regulatory risk assessment of plant protection products. These model ecosystems allow researchers to capture interactions of multiple species under realistic environmental conditions. They enable assessment of direct and indirect effects of stressors at all trophic levels (i.e., from primary producers to secondary consumers) and impacts on ecosystem functions. Due to the limited ability to test the multitude of potential exposure scenarios, cross-linking aquatic mesocosm studies with virtual mesocosms, i.e., aquatic system models (ASMs), can serve to meet the demand for more environmental realism and ecological relevance in risk assessment. In this study, full control data sets from seven aquatic mesocosm studies conducted at a single test facility under GLP were analysed graphically and using descriptive statistics. Thereby, not only a comprehensive data base but also an insight into the species present, their dynamics over time, and variability in unchallenged mesocosms was observed. While consistency in dynamics could be discerned for physical and chemical parameters, variability was evident for several biological endpoints. This variability points to amplification of small differences over time as well as to stochastic processes. The outline of existing gaps and uncertainties in data leads to the estimation of what can be expected to be captured and predicted by ASMs.
Collapse
Affiliation(s)
| | | | - Peter Ebke
- Mesocosm GmbH, Homberg (Ohm), Hesse, Germany
| | | | | | - Nika Galic
- Syngenta Crop Protection AG, Basel, Switzerland
| | - Roman Ashauer
- Syngenta Crop Protection AG, Basel, Switzerland
- Department of Environment and Geography, University of York, York, UK
| |
Collapse
|
2
|
Carey MP, Reeves GH, Sethi SA, Tanner TL, Young DB, Bartz KK, Zimmerman CE. Elodea mediates juvenile salmon growth by altering physical structure in freshwater habitats. Biol Invasions 2023. [DOI: 10.1007/s10530-022-02992-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
AbstractInvasive species introductions in high latitudes are accelerating and elevating the need to address questions of their effects on Subarctic and Arctic ecosystems. As a driver of ecosystem function, submerged aquatic vegetation is one of the most deleterious biological invasions to aquatic food webs. The aquatic plant Elodea spp. has potential to be a widespread invader to Arctic and Subarctic ecosystems and is already established in 19 waterbodies in Alaska, USA. Elodea spp. has been found to alter ecosystem processes through multiple pathways; yet little is known about the impact of Elodea spp. on fish life history. A primary concern is the effect of Elodea spp. on juvenile Pacific salmon (Oncorhynchus spp.), because this invading plant can form dense stands in littoral zones, potentially impacting important freshwater rearing habitats used by juvenile fish for foraging and refuge from predators. We used a field experiment to test the effect of Elodea spp. on juvenile coho salmon (O. kisutch) growth in an infested lake near Cordova, Alaska, USA. We found that Elodea spp. stands result in reduced growth and a lower trophic position for juvenile coho salmon over the summer compared to habitats dominated by a native assemblage of aquatic plants. While infested sites were not associated with significant changes in water condition or primary productivity compared to sites dominated by native vegetation, zooplankton densities were reduced, and Elodea spp. height and vegetation richness increased macroinvertebrate densities. Combined, these results indicate that Elodea spp. may alter the flow of energy to juvenile salmon by restructuring space and affecting prey resources for rearing fish. Furthermore, these results suggest that widespread establishment of Elodea spp. may alter the quality of habitat for juvenile salmon and, by affecting juvenile fish growth, could lead to population-level impacts on salmon returns.
Collapse
|
3
|
Karus K, Zagars M, Agasild H, Tuvikene A, Zingel P, Puncule L, Medne-Peipere M, Feldmann T. The influence of macrophyte ecological groups on food web components of temperate freshwater lakes. AQUATIC BOTANY 2022; 183:None. [PMID: 36466371 PMCID: PMC9595120 DOI: 10.1016/j.aquabot.2022.103571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 08/01/2022] [Accepted: 09/05/2022] [Indexed: 06/17/2023]
Abstract
Aquatic macrophyte taxonomic composition, species abundance and cover determine the physical structure, complexity and heterogeneity of aquatic habitats - the structuring role of macrophytes. These traits influence richness, distribution, feeding and strength of the relationships between food web communities in lakes. The aim of this study was to determine how lakes with different dominating macrophyte ecological groups affect planktonic food web components, emphasising the influence on young of year (YOY) fish and large (≥1 +) fish community. We hypothesised that different dominating macrophyte ecological groups have different structural effects on food web components and YOY fish growth, abundance and feeding. Studied lakes categorised into three different macrophyte ecological groups - lakes dominated by emergent, floating+floating-leaved or submerged vegetation. We found that all dominating ecological groups had a strong influence on plankton communities (except heterotrophic bacterioplankton and nanoflagellates), YOY fish and large fish. Floating-leaved plant dominance was positively related to planktonic food web structure and YOY fish weight, length, abundance and the consumption of zooplankton as a prey of all major species of YOY fishes. Larger fish tended to favour the presence of emergent vegetation. This conclusion has important implications for local managers and conservationists in respect to the maintenance and protection of littoral habitats and fish resources.
Collapse
Affiliation(s)
- Katrit Karus
- Institute for Environmental Solutions, “Lidlauks”, Cēsis Municipality, LV-4126, Latvia
- Centre for Limnology, Institute of Agricultural and Environmental Sciences, Chair of Hydrobiology and Fishery, Estonian University of Life Sciences, Rannu 61117, Tartu, Estonia
| | - Matiss Zagars
- Institute for Environmental Solutions, “Lidlauks”, Cēsis Municipality, LV-4126, Latvia
| | - Helen Agasild
- Centre for Limnology, Institute of Agricultural and Environmental Sciences, Chair of Hydrobiology and Fishery, Estonian University of Life Sciences, Rannu 61117, Tartu, Estonia
| | - Arvo Tuvikene
- Centre for Limnology, Institute of Agricultural and Environmental Sciences, Chair of Hydrobiology and Fishery, Estonian University of Life Sciences, Rannu 61117, Tartu, Estonia
| | - Priit Zingel
- Centre for Limnology, Institute of Agricultural and Environmental Sciences, Chair of Hydrobiology and Fishery, Estonian University of Life Sciences, Rannu 61117, Tartu, Estonia
| | - Linda Puncule
- Institute for Environmental Solutions, “Lidlauks”, Cēsis Municipality, LV-4126, Latvia
- Centre for Limnology, Institute of Agricultural and Environmental Sciences, Chair of Hydrobiology and Fishery, Estonian University of Life Sciences, Rannu 61117, Tartu, Estonia
| | - Madara Medne-Peipere
- Institute for Environmental Solutions, “Lidlauks”, Cēsis Municipality, LV-4126, Latvia
| | - Tõnu Feldmann
- Centre for Limnology, Institute of Agricultural and Environmental Sciences, Chair of Hydrobiology and Fishery, Estonian University of Life Sciences, Rannu 61117, Tartu, Estonia
| |
Collapse
|
4
|
Hou G, Zhang H, Liu Z, Chen Z, Cao Y. Historical reconstruction of aquatic vegetation of typical lakes in Northeast China based on an improved CA-Markov model. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.1031678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Aquatic vegetation is an important marker of the change in the lake ecosystem. It plays an important supporting role in the lake ecosystem, and its abundance and cover changes affect the ecosystem balance. Collecting accurate long-term distribution data on aquatic vegetation can help monitor the change in the lake ecosystem, thereby providing scientific support for efforts to maintain the balance of the ecosystem. This work aimed to establish an improved CA-Markov model to reconstruct historical potential distribution of aquatic vegetation in the two typical lakes (Xingkai Lake and Hulun Lake) in Northeast China during 1950s to 1960s. We firstly analyzed remote sensing data on the spatial distribution of aquatic vegetation data in two lakes in six periods from the 1970 to 2015. Then, we built a transfer probability matrix for changes in hydrothermal conditions (temperature and precipitation) based on similar periods, and we designed suitability images using the spatial frequency and temporal continuity of the constraints. Finally, we established an improved CA-Markov model based on the transfer probability matrix and suitability images to reconstruct the potential distributions of aquatic vegetation in the two northeastern lakes during the 1950s and 1960s. The results showed the areas of aquatic vegetation in the 1950s and 1960s were 102.37 km2 and 100.7 km2 for Xingkai Lake and 90.81 km2 and 88.15 km2 for Hulun Lake, respectively. Compared with the traditional CA-Markov model, the overall accuracy of the improved model increased by more than 50%, which proved the improved CA-Markov model can be used to effectively reconstruct the historical potential distribution of aquatic vegetation. This study provides an accurate methodology for simulating the potential historical distributions of aquatic vegetation to enrich the study of the historical evolution of lake ecosystem.
Collapse
|
5
|
Lewerentz A, Hoffmann M, Sarmento Cabral J. Depth diversity gradients of macrophytes: Shape, drivers, and recent shifts. Ecol Evol 2021; 11:13830-13845. [PMID: 34707821 PMCID: PMC8525089 DOI: 10.1002/ece3.8089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 08/17/2021] [Accepted: 08/23/2021] [Indexed: 11/11/2022] Open
Abstract
Investigating diversity gradients helps to understand biodiversity drivers and threats. However, one diversity gradient is rarely assessed, namely how plant species distribute along the depth gradient of lakes. Here, we provide the first comprehensive characterization of depth diversity gradient (DDG) of alpha, beta, and gamma species richness of submerged macrophytes across multiple lakes. We characterize the DDG for additive richness components (alpha, beta, gamma), assess environmental drivers, and address temporal change over recent years. We take advantage of yet the largest dataset of macrophyte occurrence along lake depth (274 depth transects across 28 deep lakes) as well as of physiochemical measurements (12 deep lakes from 2006 to 2017 across Bavaria), provided publicly online by the Bavarian State Office for the Environment. We found a high variability in DDG shapes across the study lakes. The DDGs for alpha and gamma richness are predominantly hump-shaped, while beta richness shows a decreasing DDG. Generalized additive mixed-effect models indicate that the depth of the maximum richness (D max) is influenced by light quality, light quantity, and layering depth, whereas the respective maximum alpha richness within the depth gradient (R max) is significantly influenced by lake area only. Most observed DDGs seem generally stable over recent years. However, for single lakes we found significant linear trends for R max and D max going into different directions. The observed hump-shaped DDGs agree with three competing hypotheses: the mid-domain effect, the mean-disturbance hypothesis, and the mean-productivity hypothesis. The DDG amplitude seems driven by lake area (thus following known species-area relationships), whereas skewness depends on physiochemical factors, mainly water transparency and layering depth. Our results provide insights for conservation strategies and for mechanistic frameworks to disentangle competing explanatory hypotheses for the DDG.
Collapse
Affiliation(s)
- Anne Lewerentz
- Ecosystem ModellingCenter for Computational and Theoretical Ecology (CCTB)University of WürzburgWürzburgGermany
| | - Markus Hoffmann
- Limnological StationChair of Aquatic Systems BiologyTechnical University of MunichMunichGermany
| | - Juliano Sarmento Cabral
- Ecosystem ModellingCenter for Computational and Theoretical Ecology (CCTB)University of WürzburgWürzburgGermany
| |
Collapse
|
6
|
Zhi Y, Liu Y, Li W, Cao Y. Responses of four submerged macrophytes to freshwater snail density ( Radix swinhoei) under clear-water conditions: A mesocosm study. Ecol Evol 2020; 10:7644-7653. [PMID: 32760554 PMCID: PMC7391322 DOI: 10.1002/ece3.6489] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 05/15/2020] [Accepted: 05/19/2020] [Indexed: 11/09/2022] Open
Abstract
Macrophytes play a key role in stabilizing clear-water conditions in shallow freshwater ecosystems. Their populations are maintained by a balance between plant grazing and plant growth. As a freshwater snail commonly found in shallow lakes, Radix swinhoei can affect the growth of submerged macrophytes by removing epiphyton from the surface of aquatic plants and by grazing directly on macrophyte organs. Thus, we conducted a long-term (11-month) experiment to explore the effects of snail density on macrophytes with distinctive structures in an outdoor clear-water mesocosm system (with relatively low total nitrogen (TN, 0.66 ± 0.27 mg/L) and total phosphorus (TP, 36 ± 20 μg/L) and a phytoplankton chlorophyll a (Chla) range of 14.8 ± 4.9 μg/L) based on two different snail densities (low and high) and four macrophyte species treatments (Myriophyllum spicatum, Potamogeton wrightii, P. crispus, and P. oxyphyllus). In the high-density treatment, snail biomass and abundance (36.5 ± 16.5 g/m2 and 169 ± 92 ind/m2, respectively) were approximately twice that observed in the low-density treatment, resulting in lower total and aboveground biomass and ramet number in the macrophytes. In addition, plant height and plant volume inhabited (PVI) showed species-specific responses to snail densities, that is, the height of P. oxyphyllus and PVI of M. spicatum were both higher under low-density treatment. Thus, compared with low-density treatment, the inhibitory effects of long-term high snail density on macrophytes by direct feeding may be greater than the positive effects resulting from epiphyton clearance when under clear-water conditions with low epiphyton biomass. Thus, under clear-water conditions, the growth and community composition of submerged macrophytes could be potentially modified by the manual addition of invertebrates (i.e., snails) to lakes if the inhibitory effects from predatory fish are minor.
Collapse
Affiliation(s)
- Yongwei Zhi
- Key Laboratory of Aquatic Botany and Watershed EcologyWuhan Botanical GardenChinese Academy of SciencesWuhanChina
- Hubei Key Laboratory of Wetland Evolution & Ecological RestorationWuhan Botanical GardenChinese Academy of SciencesWuhanChina
- University of Chinese Academy of SciencesBeijingChina
| | - Yang Liu
- Key Laboratory of Aquatic Botany and Watershed EcologyWuhan Botanical GardenChinese Academy of SciencesWuhanChina
- Hubei Key Laboratory of Wetland Evolution & Ecological RestorationWuhan Botanical GardenChinese Academy of SciencesWuhanChina
- University of Chinese Academy of SciencesBeijingChina
| | - Wei Li
- Key Laboratory of Aquatic Botany and Watershed EcologyWuhan Botanical GardenChinese Academy of SciencesWuhanChina
- Hubei Key Laboratory of Wetland Evolution & Ecological RestorationWuhan Botanical GardenChinese Academy of SciencesWuhanChina
| | - Yu Cao
- Key Laboratory of Aquatic Botany and Watershed EcologyWuhan Botanical GardenChinese Academy of SciencesWuhanChina
- Hubei Key Laboratory of Wetland Evolution & Ecological RestorationWuhan Botanical GardenChinese Academy of SciencesWuhanChina
| |
Collapse
|
7
|
Yu J, Xia M, Kong M, He H, Guan B, Liu Z, Jeppesen E. A small omnivorous bitterling fish (Acheilognathus macropterus) facilitates dominance of cyanobacteria, rotifers and Limnodrilus in an outdoor mesocosm experiment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:23862-23870. [PMID: 32301086 DOI: 10.1007/s11356-020-08774-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 04/03/2020] [Indexed: 06/11/2023]
Abstract
Small omnivorous fish often dominate in subtropical shallow lakes, and they may affect the community structure of aquatic organisms on at least two trophic levels. However, in the study of aquatic food webs in subtropical lakes, most ecologists have focused on the effects of large-sized omnivorous species (e.g. common carp), studies of small-sized species being scarce. We conducted a mesocosm experiment with two treatments (fish presence and absence) to examine the effects of a small-sized omnivore, bitterling (Acheilognathus macropterus), on phytoplankton, zooplankton and benthic macroinvertebrates. Our results showed that bitterling presence significantly increased the chlorophyll a concentration and biomass of phytoplankton, which became dominated by cyanobacteria (mainly Aphanizomenon spp.) that accounted for >99% of both total phytoplankton abundance and biomass. Both the abundance and biomass of zooplankton were also higher in the fish-present treatment, but small rotifers became dominant, and the zooplankton:phytoplankton biomass ratio decreased, indicating less grazing on phytoplankton. Moreover, both the abundance and biomass of benthic macroinvertebrates (tubificids) were higher in the bitterling-present treatment than in the controls, which is opposite to the situation found when omni-benthivorous fish (e.g. crucian carp) dominate. Higher biomass of tubificids may, in turn, result in higher sediment nutrient release. Our study suggests that A. macropterus, and maybe also other bitterling species, can alter both pelagic and benthic assemblages via both top-down and bottom-up control effects and lead to more turbid water in eutrophic lakes. Thus, more attention should be paid to these small omnivorous species in the restoration and management of shallow subtropical lakes.
Collapse
Affiliation(s)
- Jinlei Yu
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China.
| | - Manli Xia
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou, 510630, China
| | - Ming Kong
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, 210042, China
| | - Hu He
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Baohua Guan
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Zhengwen Liu
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou, 510630, China
- Sino-Danish Centre for Education and Research (SDC), University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Erik Jeppesen
- Sino-Danish Centre for Education and Research (SDC), University of Chinese Academy of Sciences, Beijing, 100190, China
- Department of Bioscience, Aarhus University, 8600, Silkeborg, Denmark
- Limnology Laboratory, Department of Biological Sciences and Centre for Ecosystem Research and Implementation, Middle East Technical University, Ankara, Turkey
| |
Collapse
|
8
|
Dube T, de Necker L, Wepener V, Smit NJ, Pinceel T, Mwaijengo GN, Lemmens P, Brendonck L. A comparison of aquatic macroinvertebrate and large branchiopod community composition between temporary pans of a conservation area and surrounding communal area in South Africa. AFRICAN ZOOLOGY 2020. [DOI: 10.1080/15627020.2020.1724827] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- T Dube
- Animal Ecology, Global Change and Sustainable Development, Leuven, Belgium
- Department of Applied Biosciences and Biotechnology, Midlands State University, Gweru, Zimbabwe
| | - L de Necker
- Water Research Group, School for Biological Sciences, North-West University, Potchefstroom, South Africa
| | - V Wepener
- Water Research Group, School for Biological Sciences, North-West University, Potchefstroom, South Africa
| | - NJ Smit
- Water Research Group, School for Biological Sciences, North-West University, Potchefstroom, South Africa
| | - T Pinceel
- Animal Ecology, Global Change and Sustainable Development, Leuven, Belgium
- Centre for Environmental Management, University of the Free State, Bloemfontein, South Africa
| | - GN Mwaijengo
- Animal Ecology, Global Change and Sustainable Development, Leuven, Belgium
- School of Materials, Energy, Water and Environmental Sciences, Nelson Mandela Institute, Arusha, Tanzania
| | - P Lemmens
- Laboratory of Aquatic Ecology, Evolution and Conservation, Leuven, Belgium
| | - L Brendonck
- Animal Ecology, Global Change and Sustainable Development, Leuven, Belgium
- Water Research Group, School for Biological Sciences, North-West University, Potchefstroom, South Africa
| |
Collapse
|
9
|
Song Y, Liew JH, Sim DZH, Mowe MAD, Mitrovic SM, Tan HTW, Yeo DCJ. Effects of macrophytes on lake‐water quality across latitudes: a meta‐analysis. OIKOS 2018. [DOI: 10.1111/oik.05809] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yiluan Song
- Dept of Biological Sciences, National Univ. of Singapore, 14 Science Drive 4, SG‐117543 Singapore
- Dept of Environmental Studies, Univ. of California Santa Cruz CA USA
| | - Jia Huan Liew
- Dept of Biological Sciences, National Univ. of Singapore, 14 Science Drive 4, SG‐117543 Singapore
| | - Darren Z. H. Sim
- Dept of Biological Sciences, National Univ. of Singapore, 14 Science Drive 4, SG‐117543 Singapore
| | - Maxine A. D. Mowe
- Dept of Biological Sciences, National Univ. of Singapore, 14 Science Drive 4, SG‐117543 Singapore
| | - Simon M. Mitrovic
- Environmental Sciences Discipline, School of Life Sciences, Univ. of Technology Sydney NSW Australia
| | - Hugh T. W. Tan
- Dept of Biological Sciences, National Univ. of Singapore, 14 Science Drive 4, SG‐117543 Singapore
| | - Darren C. J. Yeo
- Dept of Biological Sciences, National Univ. of Singapore, 14 Science Drive 4, SG‐117543 Singapore
| |
Collapse
|
10
|
Karpowicz M, Ejsmont-Karabin J, Strzałek M. Biodiversity of zooplankton (Rotifera and Crustacea) in water soldier (Stratiotes aloides) habitats. Biologia (Bratisl) 2016. [DOI: 10.1515/biolog-2016-0068] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
11
|
Ziegler JP, Solomon CT, Finney BP, Gregory-Eaves I. Macrophyte biomass predicts food chain length in shallow lakes. Ecosphere 2015. [DOI: 10.1890/es14-00158.1] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
12
|
Meiofauna constitute a considerable portion of invertebrate drift among moss-rich patches within a karst hydrosystem. Biologia (Bratisl) 2014. [DOI: 10.2478/s11756-013-0323-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
13
|
Precipitation-Induced Alternative Regime Switches in Shallow Lakes of the Boreal Plains (Alberta, Canada). Ecosystems 2014. [DOI: 10.1007/s10021-013-9741-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
14
|
Vermaire JC, Prairie YT, Gregory-Eaves I. THE INFLUENCE OF SUBMERGED MACROPHYTES ON SEDIMENTARY DIATOM ASSEMBLAGES(1). JOURNAL OF PHYCOLOGY 2011; 47:1230-1240. [PMID: 27020346 DOI: 10.1111/j.1529-8817.2011.01069.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Submerged macrophytes are a central component of lake ecosystems; however, little is known regarding their long-term response to environmental change. We have examined the potential of diatoms as indicators of past macrophyte biomass. We first sampled periphyton to determine whether habitat was a predictor of diatom assemblage. We then sampled 41 lakes in Quebec, Canada, to evaluate whether whole-lake submerged macrophyte biomass (BiomEpiV) influenced surface sediment diatom assemblages. A multivariate regression tree (MRT) was used to construct a semiquantitative model to reconstruct past macrophyte biomass. We determined that periphytic diatom assemblages on macrophytes were significantly different from those on wood and rocks (ANOSIM R = 0.63, P < 0.01). A redundancy analysis (RDA) of the 41-lake data set identified BiomEpiV as a significant (P < 0.05) variable in structuring sedimentary diatom assemblages. The MRT analysis classified the lakes into three groups. These groups were (A) high-macrophyte, nutrient-limited lakes (BiomEpiV ≥525 μg · L(-1) ; total phosphorus [TP] <35 μg · L(-1) ; 23 lakes); (B) low-macrophyte, nutrient-limited lakes (BiomEpiV <525 μg · L(-1) ; TP <35 μg · L(-1) ; 12 lakes); and (C) eutrophic lakes (TP ≥35 μg · L(-1) ; six lakes). A semiquantitative model correctly predicted the MRT group of the lake 71% of the time (P < 0.001). These results suggest that submerged macrophytes have a significant influence on diatom community structure and that sedimentary diatom assemblages can be used to infer past macrophyte abundance.
Collapse
Affiliation(s)
- Jesse C Vermaire
- Department of Biology, McGill University, Montreal, Quebec, Canada, H3A 1B1Département des Sciences Biologiques, Université du Québec à Montréal, Montréal Québec, Canada H3C 3P8Department of Biology, McGill University, Montreal, Quebec, Canada, H3A 1B1
| | - Yves T Prairie
- Department of Biology, McGill University, Montreal, Quebec, Canada, H3A 1B1Département des Sciences Biologiques, Université du Québec à Montréal, Montréal Québec, Canada H3C 3P8Department of Biology, McGill University, Montreal, Quebec, Canada, H3A 1B1
| | - Irene Gregory-Eaves
- Department of Biology, McGill University, Montreal, Quebec, Canada, H3A 1B1Département des Sciences Biologiques, Université du Québec à Montréal, Montréal Québec, Canada H3C 3P8Department of Biology, McGill University, Montreal, Quebec, Canada, H3A 1B1
| |
Collapse
|
15
|
Kosten S, Lacerot G, Jeppesen E, da Motta Marques D, van Nes EH, Mazzeo N, Scheffer M. Effects of Submerged Vegetation on Water Clarity Across Climates. Ecosystems 2009. [DOI: 10.1007/s10021-009-9277-x] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
16
|
Louette G, Declerck S, Vandekerkhove J, De Meester L. Evaluation of Restoration Measures in a Shallow Lake through a Comparison of Present Day Zooplankton Communities with Historical Samples. Restor Ecol 2009. [DOI: 10.1111/j.1526-100x.2008.00409.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
17
|
Semenchenko VP. Role of macrophytes in the variability of zooplankton community structure in the littoral zone of shallow lakes. CONTEMP PROBL ECOL+ 2008. [DOI: 10.1134/s1995425508020136] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
18
|
Haukka K, Kolmonen E, Hyder R, Hietala J, Vakkilainen K, Kairesalo T, Haario H, Sivonen K. Effect of nutrient loading on bacterioplankton community composition in lake mesocosms. MICROBIAL ECOLOGY 2006; 51:137-46. [PMID: 16435168 DOI: 10.1007/s00248-005-0049-7] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2005] [Accepted: 08/11/2005] [Indexed: 05/06/2023]
Abstract
Changes in bacterioplankton community composition were followed in mesocosms set up in the littoral of Lake Vesijärvi, southern Finland, over two summers. Increasing nitrogen and phosphorus concentrations in the mesocosms represented different trophic states, from mesotrophic to hypertrophic. In 1998, the mesocosms were in a turbid state with a high biomass of phytoplankton, whereas in 1999, macrophytes proliferated and a clear-water state prevailed. The bacterial communities in the mesocosms also developed differently, as shown by denaturing gradient gel electrophoresis profiling of partial 16S rRNA gene fragments and by nonmetric multidimensional scaling analysis. In 1998, nutrient treatments affected the diversity and clustering of bacterial communities strongly, but in 1999, the bacterial communities were less diversified and not clearly affected by treatments. Canonical correspondence analysis indicated that bacterioplankton communities in the mesocosms were influenced by environmental physicochemical variables linked to the increasing level of eutrophication. Nitrogen concentration correlated directly with the bacterioplankton composition. In addition, the high nutrient levels had indirect effects through changes in the biomass and composition of phyto- and zooplankton. Sequencing analysis showed that the dominant bacterial divisions remained the same, but the dominant phylotypes changed during the 2-year period. The occurrence of Verrucomicrobia correlated with more eutrophic conditions, whereas the occurrence of Actinobacteria correlated with less eutrophic conditions.
Collapse
Affiliation(s)
- Kaisa Haukka
- Department of Applied Chemistry and Microbiology, University of Helsinki, P.O. Box 56, Viikki Biocenter, 00014, Helsinki, Finland.
| | | | | | | | | | | | | | | |
Collapse
|