Aquatic macrophyte community varies in urban reservoirs with different degrees of eutrophication

AIM: Investigate spatial and temporal variation in the aquatic macrophyte community in four urban reservoirs located in Curitiba metropolitan region, Brazil. We tested the hypothesis that aquatic macrophyte community differ among reservoirs with different degrees of eutrophication. METHODS: The reservoirs selected ranged from oligotrophic/mesotrophic to eutrophic. Sampling occurred in October 2011, January 2012 and June 2012. Twelve aquatic macrophytes stands were sampled at each reservoir. Species were identified and the relative abundance of aquatic macrophytes was estimated. Differences among reservoirs and over sampling periods were analyzed: i) through two‑way ANOVAs considering the stand extent (m) and the stand biodiversity - species richness, evenness, Shannon-Wiener index and beta diversity (species variation along the aquatic macrophyte stand); and ii) through PERMANOVA considering species composition. Indicator species that were characteristic for each reservoir were also identified. RESULTS: The aquatic macrophyte stand extent varied among reservoirs and over sampling periods. Species richness showed only temporal variation. On the other hand, evenness and Shannon-Wiener index varied only among reservoirs. The beta diversity of macrophyte stands did not vary among reservoirs or over time, meaning that species variability among aquatic macrophyte stands was independent of the stand extent and reservoir eutrophication. Community composition depended on the reservoir and sampling period. CONCLUSIONS: Our results support our initial expectation that reservoirs of different degrees of eutrophication have different aquatic macrophyte communities. As a consequence, each reservoir had particular indicator species. Therefore, monitoring and management efforts must be offered for each reservoir individually.

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Spatial distribution and temporal variation of microcrustaceans assembly (Cladocera and Copepoda) in different compartments of a reservoir in the brazilian semiarid region

Acta Limnologica Brasiliensia ◽

10.1590/s2179-975x9616 ◽

2018 ◽

Vol 30 (0) ◽

Cited By ~ 1

Author(s):

Josiane Souza Santos ◽

Nadson Ressyé Simões ◽

Sérgio Luiz Sonoda

Keyword(s):

Spatial Distribution ◽

Spatial Variation ◽

Temporal Variation ◽

Aquatic Macrophytes ◽

Temporal Dynamics ◽

Lateral Compartment ◽

Spatial And Temporal Variation ◽

Semiarid Region ◽

Brazilian Semiarid ◽

Significant Spatial Variation

Abstract Aim: The objective of this study was to investigate the spatial and temporal variation of microcrustacean assemblages of a reservoir in the Brazilian semiarid region. Methods Physical and chemical water variables and samples of microcrustaceans were collected at eight sites of the reservoir between July 2013 and November 2014, in a total of seven campaigns. For this study, the reservoir was categorized in two compartments: lateral and central. Results Limnological variables showed significant temporal variation (PERMANOVA, Pseudo-F = 19.51, p = 0.001). Higher turbidity values and suspended solids were observed in the rainiest months, while during the dry months, we measured higher values of transparency, dissolved oxygen, and chlorophyll-a. It was not found significant spatial variation of limnological variables (PERMANOVA, Pseudo-F = 0.96; p = 0.394). During the study period, ten species were recorded: four Cladocera (Ceriodaphnia cornuta, Daphnia gessneri, Diaphanosoma birgei and Diaphanosoma spinulosum ) three Copepoda Calanoida (Argyrodiaptomus azevedoi, Notodiaptomus cearensis and Notodiaptomus iheringi) and three Copepoda Cyclopoida (Macrocyclops albidus, Thermocyclops minutus and Thermocyclops decipiens). The microcrustacean assemblages showed significant temporal variation (PERMANOVA, Pseudo-F = 4.34; p = 0.001) as well as significant spatial variation (PERMANOVA, Pseudo-F = 9.46; p = 0.001). The highest values of abundance and richness were observed in the lateral compartment, this result is mainly related to the presence of aquatic macrophytes in this region, because the analysis of partial RDA indicated that limnological variables explained only 11% of this variation (Pseudo-F = 2.08, p = 0.001). Conclusions The results suggest that the seasonality of the semiarid is an important factor in the temporal dynamics of the limnological variables, while the aquatic macrophytes play an important role in the spatial distribution of the microcrustacean assembly.

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The Biodiversity–Biomass Relationship of Aquatic Macrophytes Is Regulated by Water Depth: A Case Study of a Shallow Mesotrophic Lake in China

Frontiers in Ecology and Evolution ◽

10.3389/fevo.2021.650001 ◽

2021 ◽

Vol 9 ◽

Author(s):

Fei Ma ◽

Lei Yang ◽

Tian Lv ◽

Zhenjun Zuo ◽

Haocun Zhao ◽

...

Keyword(s):

Water Depth ◽

Aquatic Macrophyte ◽

Interspecific Interactions ◽

Species Identity ◽

Community Biomass ◽

Macrophyte Communities ◽

Macrophyte Community ◽

Evenness Indices ◽

Aquatic Macrophyte Community ◽

The Relationship

The relationship between biodiversity and productivity (or biomass production) (BPR) has been a popular topic in macroecology and debated for decades. However, this relationship is poorly understood in macrophyte communities, and the mechanism of the BPR pattern of the aquatic macrophyte community is not clear. We investigated 78 aquatic macrophyte communities in a shallow mesotrophic freshwater lake in the middle and lower reaches of the Yangtze River in China. We analyzed the relationship between biodiversity (species richness, diversity, and evenness indices) and community biomass, and the effects of water environments and interspecific interactions on biodiversity–biomass patterns. Unimodal patterns between community biomass and diversity indices instead of evenness indices are shown, and these indicate the importance of both the number and abundance of species when studying biodiversity–biomass patterns under mesotrophic conditions. These patterns were moderated by species identity biologically and water depth environmentally. However, water depth determined the distribution and growth of species with different life-forms as well as species identities through environmental filtering. These results demonstrate that water depth regulates the biodiversity–biomass pattern of the aquatic macrophyte community as a result of its effect on species identity and species distribution. Our study may provide useful information for conservation and restoration of macrophyte vegetation in shallow lakes through matching water depth and species or life-form combinations properly to reach high ecosystem functions and services.

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Response of an Aquatic Macrophyte Community to Fluctuating Water Levels in an Oligotrophic Lake

Lake and Reservoir Management ◽

10.1080/07438140209353929 ◽

2002 ◽

Vol 18 (1) ◽

pp. 52-65 ◽

Cited By ~ 23

Author(s):

Tyler Wagner ◽

C. Michael Falter

Keyword(s):

Aquatic Macrophyte ◽

Water Levels ◽

Oligotrophic Lake ◽

Macrophyte Community ◽

Aquatic Macrophyte Community

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Species richness and beta diversity of aquatic macrophytes in a large subtropical reservoir (Itaipu Reservoir, Brazil): the influence of limnology and morphometry

Hydrobiologia ◽

10.1023/b:hydr.0000007300.78143.e1 ◽

2003 ◽

Vol 505 (1-3) ◽

pp. 119-128 ◽

Cited By ~ 35

Author(s):

Sidinei Magela Thomaz ◽

Débora C. Souza ◽

Luis Mauricio Bini

Keyword(s):

Species Richness ◽

Beta Diversity ◽

Aquatic Macrophytes

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Effect of Triploid Grass Carp on the Aquatic Macrophyte Community of Devils Lake, Oregon

North American Journal of Fisheries Management ◽

10.1577/1548-8675(1993)013<0757:eotgco>2.3.co;2 ◽

1993 ◽

Vol 13 (4) ◽

pp. 757 ◽

Cited By ~ 5

Author(s):

SCOTT A. BONAR ◽

G. L. THOMAS ◽

STEVEN L. TH1ESFELD ◽

GILBERT B. PAULEY ◽

T. BROCK STABLES

Keyword(s):

Grass Carp ◽

Aquatic Macrophyte ◽

Devils Lake ◽

Macrophyte Community ◽

Aquatic Macrophyte Community

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Effects of harvest management of Trapa bispinosa on an aquatic macrophyte community and water quality in a eutrophic lake

Ecological Engineering ◽

10.1016/j.ecoleng.2013.12.028 ◽

2014 ◽

Vol 64 ◽

pp. 120-129 ◽

Cited By ~ 12

Author(s):

Weiwei Xu ◽

Weiping Hu ◽

Jiancai Deng ◽

Jinge Zhu ◽

Qinqin Li

Keyword(s):

Water Quality ◽

Aquatic Macrophyte ◽

Eutrophic Lake ◽

Harvest Management ◽

Macrophyte Community ◽

Aquatic Macrophyte Community

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What drives the spatial distribution and dynamics of local species richness in tropical forest?

Proceedings of The Royal Society B Biological Sciences ◽

10.1098/rspb.2017.1503 ◽

2017 ◽

Vol 284 (1863) ◽

pp. 20171503 ◽

Cited By ~ 4

Author(s):

Thorsten Wiegand ◽

Felix May ◽

Martin Kazmierczak ◽

Andreas Huth

Keyword(s):

Species Richness ◽

Tropical Forest ◽

Temporal Variation ◽

Tropical Forests ◽

Temporal Variability ◽

Dynamic Models ◽

Neutral Theory ◽

Spatial And Temporal Variation ◽

Demographic Stochasticity ◽

Spatio Temporal

Understanding the structure and dynamics of highly diverse tropical forests is challenging. Here we investigate the factors that drive the spatio-temporal variation of local tree numbers and species richness in a tropical forest (including 1250 plots of 20 × 20 m 2 ). To this end, we use a series of dynamic models that are built around the local spatial variation of mortality and recruitment rates, and ask which combination of processes can explain the observed spatial and temporal variation in tree and species numbers. We find that processes not included in classical neutral theory are needed to explain these fundamental patterns of the observed local forest dynamics. We identified a large spatio-temporal variability in the local number of recruits as the main missing mechanism, whereas variability of mortality rates contributed to a lesser extent. We also found that local tree numbers stabilize at typical values which can be explained by a simple analytical model. Our study emphasized the importance of spatio-temporal variability in recruitment beyond demographic stochasticity for explaining the local heterogeneity of tropical forests.

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Spatial and temporal variation of fish assemblage associated with aquatic macrophyte patches in the littoral zone of the Ayapel Swamp Complex, Colombia

Acta Limnologica Brasiliensia ◽

10.1590/s2179-975x6016 ◽

2017 ◽

Vol 29 (0) ◽

Cited By ~ 1

Author(s):

Carlos Mario Marín Avendaño ◽

Néstor Jaime Aguirre Ramírez

Keyword(s):

Temporal Variation ◽

Environmental Conditions ◽

Fish Assemblage ◽

Littoral Zone ◽

Aquatic Macrophyte ◽

Abundant Species ◽

Assemblage Structure ◽

Spatial And Temporal Variation ◽

Suitable Habitat ◽

Fish Assemblage Structure

Abstract: Aim The purpose of the present study was to examine spatial and temporal variation in fish assemblage structure associated with aquatic macrophytes in the littoral zone of the ASC. Methods Specimens were caught between January 2008 and February 2009, over four limnimetric moments, using both cast net and seine net. Data on the temperature, electrical conductivity, pH and dissolved oxygen was recorded for the characterization of the water mass in the sites. Results A total of 34,151 specimens from 44 species were collected. The most abundant species were Eigenmannia virescens, Astyanax caucanus, Astyanax fasciatus, Roeboides dayi and Cyphocharax magdalenae, which together accounted for more than 75% of the sample. Temporal and spatial comparisons showed variation in the environmental conditions and highlighted the existence of heterogeneous abiotic conditions (p<0.05). However, the multiple comparisons test showed the existence of homogeneous spatial conditions (p>0.05) regarding the fish assemblage structure. The multivariate analysis showed no significant relationship between existing environmental conditions and the fish assemblage (p=0.04). The analysis also showed the absence of a relationship between the fish assemblage and environmental variables with respect to the flood pulse and sampling sites (p>0.05). Conclusion The uniformity of the fish communities that inhabit aquatic macrophyte patches in the littoral region of the ASC may be related to the availability of suitable habitat in structural terms, that probably supports a more abundant and varied wildlife.

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Flood-mediated changes in aquatic macrophyte community structure

Marine and Freshwater Research ◽

10.1071/mf96090 ◽

1997 ◽

Vol 48 (2) ◽

pp. 153 ◽

Cited By ~ 30

Author(s):

D. L. Nielsen ◽

A. J. Chick

Keyword(s):

Aquatic Macrophyte ◽

New South ◽

Control Treatment ◽

Terrestrial Plants ◽

Spring Flood ◽

South Wales ◽

Macrophyte Community ◽

Summer Flood ◽

Aquatic Macrophyte Community ◽

And Control

Sixteen artificial billabongs on the floodplain of the River Murray, New South Wales, were surveyed over a 14-month period to observe the effect of different hydrological regimes on the development of aquatic macrophyte communities. The billabongs were initially planted with Vallisneria sp. and Myriophyllum papillosum Orch. in November 1994, then flooded. The 16 billabongs were divided into four treatments: summer flood, spring flood, permanent inundation, and a control treatment that was initially flooded and then allowed to vary in depth with rainfall and evaporation. The plant communities were surveyed on six occasions between April 1995 and June 1996, and percentage cover was estimated on each sampling occasion. Fourteen aquatic macrophyte taxa were recorded over the study period. Billabongs in the permanent and summer treatments exhibited less plant diversity than did billabongs in the control or spring treatments. Terrestrial plants germinated on the exposed areas in both spring and control treatments, but not in the other treatments.

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