Factors influencing invertebrate communities in prairie wetlands: a multivariate approach

Zimmer, Kyle D.; Hanson, Mark A.; Butler, Malcolm G.

doi:10.1139/cjfas-57-1-76

Cited by 63 publications

(83 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For example, river water, being colder and containing higher concentrations of nutrients, affects floodplain wetlands through surface or groundwater inputs. Consequently, the effects of hydrological connectivity on macroinvertebrate abundance may be even more substantial than suggested by the statistical analyses conducted in this study, due to the additional correlations with other environmental variables (Zimmer et al, 2000). In fact, if more environmental variables potentially intercorrelated with hydrological connectivity were included in our model, the importance of the hydrological gradient might be further reduced (Peres-Neto et al, 2006).…”

Section: Discussionmentioning

confidence: 76%

See 1 more Smart Citation

Macroinvertebrate patterns along environmental gradients and hydrological connectivity within a regulated river-floodplain

et al. 2008

View full text Add to dashboard Cite

Flood and flow pulses are primary factors that regulate macroinvertebrate community structure in river-floodplain ecosystems. In order to assess the impacts of these important hydrological events in a regulated Mediterranean river, bimonthly water and macroinvertebrate samples were collected in 2006 in the Middle Ebro River channel and six floodplain wetlands (NE Spain). We found significant differences among the river sites (permanently connected), two constructed wetlands (groundwater seepage) and three natural oxbow lakes (surface connected at 400, 800 and 1200 m 3 /s). River sites were dominated by aquatic worms (e.g., Naididae) and showed a high degree of eutrophication. Constructed wetlands provided new habitat for predatory insects (e.g., Coenagrion scitulum and Trithemis annulata) that benefited from the absence of fish. Natural oxbow lakes were dominated by crustaceans (e.g., Atyaephyra desmarestii, Procambarus clarkii) and were highly overlapped in Correspondence Analysis. Canonical Correspondence Analysis, coupled with variance partitioning, showed that hydrological connectivity accounted for 28 % of the variability in the invertebrate community, followed by physicochemical (10 %) and trophic (7 %) factors. Differences in frequency and duration of flood pulses in natural oxbow lakes were not enough to generate distinctive macroinvertebrate assemblages in the different wetlands. Analysis of variance showed that richness and total abundance increased with hydrological connectivity, while diversity showed a rather unimodal distribution. Generalized Additive Models indicated that among the measured environmental variables, nitrate concentration strongly affected the composition, abundance and diversity of aquatic communities. Our data indicate that increasing the diversity of water body types in degraded floodplains enhances biodiversity and aids in the functional and ecological recovery of the riverine landscape.

show abstract

Section: Discussionmentioning

confidence: 76%

“…Vol. 70, 2008 Research Article 255 Brink et al, 1996;Heino, 2000;Zimmer et al, 2000;Griffith et al, 2001;Monaghan et al, 2005;Murphy and Davy-Bowker, 2005). However, the impact of these factors may be somewhat spurious since even temperature and nutrient levels are related to hydrological connectivity.…”

Section: Discussionmentioning

confidence: 99%

Macroinvertebrate patterns along environmental gradients and hydrological connectivity within a regulated river-floodplain

et al. 2008

View full text Add to dashboard Cite

show abstract

“…The apparent in-congruency between Argia vivida exuvia and larvae abundance at the Cave & Basin Springs (i.e., fewer larvae detected yet similar numbers of exuvia collected) may be due to sampling biases or factors not considered by the scope of this study, such as intra-specific competition or impacts of (exotic) fish, which have been shown to decrease aquatic invertebrate populations (Zimmer et al 2000). Almost all Argia vivida exuvia from the Cave & Basin area were collected along the sides of the boardwalk and wooden platforms at the Fish Observation Area.…”

Section: Discussionmentioning

confidence: 91%

Investigating damselfly populations at springs in Banff National Park, Canada, with special focus on Argia vivida, Amphiagrion abbreviatum, and Ischnura cervula (Odonata: Coenagrionidae)

Hornung

Pacas

2006

Aquat Ecol

View full text Add to dashboard Cite

The objective of this study was to estimate Argia vivida (Odonata: Coenagrionidae) populations, identify breeding habitat, and investigate movement of adults within Banff National Park, Alberta, Canada, during the summer of 2003. Mark-recapture techniques and standardized dip-net surveys were used to monitor Argia vivida at various life stages. A reproductive index identified which sites Argia vivida recognized as suitable breeding habitat, and exuvia surveys confirmed breeding sites. The basic structure of emergent and surrounding vegetation was measured to investigate the importance of available ovipositing or roosting sites and the condition of the matrix habitat. Data was recorded for Amphiagrion abbreviatum and Ischnura cervula (both Odonata: Coenagrionidae) to determine if these spring-associated damselflies were successfully breeding within Banff National Park. Comparisons were made between the highly protected Middle Springs and the heavily altered Cave & Basin Springs. Additional surveys at the Vermilion Lake cool spring and Middle Springs Bog investigated their use as breeding habitat for Amphiagrion abbreviatum and Argia vivida, respectively. Results suggest the ecological value of thermal springs extends beyond their origin to outflows and downstream pools. Conservation of Argia vivida must recognize the value of unobstructed thermal outflows, and consider the condition of the forested habitat surrounding springs with regard to its potential use as nocturnal roosts and dispersal corridors. Amphiagrion abbreviatum was confirmed breeding within Banff National Park, while no sign of breeding activity was recorded for Ischnura cervula.

show abstract

“…Final stability was defined as 1Â10 )5 standard deviations over the last 15 iterations. Prior to analyses, all zooplankton community data was transformed using ln (x+1) to prevent high values from excessively influencing the results (Zimmer et al, 2000).…”

Section: Zooplankton Community Structure Analysesmentioning

confidence: 99%

“…Only those variables with a coefficient of determination of greater than 0.1 were considered meaningful with those greater than 0.2 (the PC-ORD default) given the greatest weight (see previous discussion on the selection of 0.1 cutoff). Where necessary, environmental data was transformed to approximate normality with all macro-invertebrate and SAV composition data transformed using ln (x+1) (Zimmer et al, 2000). Values were then relativized before analysis based on N i /N max , where N i represents the value for a given site and N max the largest value for all wetland-months (McCune & Grace, 2002).…”

Section: Environmental Factors Affecting Zooplankton Community Structurementioning

confidence: 99%

Zooplankton Composition and Ecology in Western Boreal Shallow-water Wetlands

2006

View full text Add to dashboard Cite

Zooplankton are a functionally important but poorly studied component of western boreal forest (WBF) wetland ecosystems. To characterize patterns in zooplankton abundance and composition an exploratory study of 24 shallow-water wetlands in northern Alberta, Canada was carried out over the summers of 2001 and 2002. Results suggest zooplankton communities in WBF wetlands tend to exist as: (1) small-cladoceran dominated communities, (2) larger sized cladoceran (e.g. Daphnia) dominated communities, or (3) communities composed primarily of rotifers and/or other crustacean zooplankton. The presence/absence of brook stickleback (Culea inconstans) was the factor most strongly linked to zooplankton structure with small cladocerans tending to dominate in wetlands with stickleback. In fishless wetlands, communities dominated by medium-large sized cladocerans tended to correspond with low-chlorophyll/high-submerged aquatic vegetation (SAV) conditions. Conversely, communities composed of rotifers and other crustaceans were associated with high-chlorophyll/low-SAV states. Macro-invertebrate predator abundance was not strongly linked to patterns in zooplankton composition suggesting macro-invertebrate predation is not a significant factor influencing zooplankton structure in fishless wetlands. Results suggest activities that spread stickleback (e.g. ditching) or inhibit development of macrophyte-dominated/clear-water conditions (e.g. nutrient loading) may seriously alter the zooplankton community structure, and thereby the functional ecology, of these valuable wetland ecosystems.

show abstract

Factors influencing invertebrate communities in prairie wetlands: a multivariate approach

Cited by 63 publications

References 0 publications

Macroinvertebrate patterns along environmental gradients and hydrological connectivity within a regulated river-floodplain

Macroinvertebrate patterns along environmental gradients and hydrological connectivity within a regulated river-floodplain

Investigating damselfly populations at springs in Banff National Park, Canada, with special focus on Argia vivida, Amphiagrion abbreviatum, and Ischnura cervula (Odonata: Coenagrionidae)

Zooplankton Composition and Ecology in Western Boreal Shallow-water Wetlands

Contact Info

Product

Resources

About