Ecological life histories of the three aquatic nuisance plants, Myriophyllum spicatum, Potamogeton crispus and Elodea canadensis

Hydrobiologia ◽  
1986 ◽  
Vol 131 (1) ◽  
pp. 3-21 ◽  
Author(s):  
Stanley A. Nichols ◽  
Byron H. Shaw
Keyword(s):  
Life Histories ◽  
Myriophyllum Spicatum ◽  
Elodea Canadensis ◽  
Potamogeton Crispus

scholarly journals Niche Models Differentiate Potential Impacts of Two Aquatic Invasive Plant Species on Native Macrophytes

Diversity ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 162
Author(s):  
Michael R. Verhoeven ◽  
Wesley J. Glisson ◽  
Daniel J. Larkin
Keyword(s):  
Native Species ◽  
Invasive Plant ◽  
Environmental Gradients ◽  
Myriophyllum Spicatum ◽  
Light Availability ◽  
Niche Overlap ◽  
Growth Cycle ◽  
Potamogeton Crispus ◽  
Starting Point ◽  
Niche Models

Potamogeton crispus (curlyleaf pondweed) and Myriophyllum spicatum (Eurasian watermilfoil) are widely thought to competitively displace native macrophytes in North America. However, their perceived competitive superiority has not been comprehensively evaluated. Coexistence theory suggests that invader displacement of native species through competitive exclusion is most likely where high niche overlap results in competition for limiting resources. Thus, evaluation of niche similarity can serve as a starting point for predicting the likelihood of invaders having direct competitive impacts on resident species. Across two environmental gradients structuring macrophyte communities—water depth and light availability—both P. crispus and M. spicatum are thought to occupy broad niches. For a third dimension, phenology, the annual growth cycle of M. spicatum is typical of other species, whereas the winter-ephemeral phenology of P. crispus may impart greater niche differentiation and thus lower risk of native species being competitively excluded. Using an unprecedented dataset comprising 3404 plant surveys from Minnesota collected using a common protocol, we modeled niches of 34 species using a probabilistic niche framework. Across each niche dimension, P. crispus had lower overlap with native species than did M. spicatum; this was driven in particular by its distinct phenology. These results suggest that patterns of dominance seen in P. crispus and M. spicatum have likely arisen through different mechanisms, and that direct competition with native species is less likely for P. crispus than M. spicatum. This research highlights the utility of fine-scale, abundance-based niche models for predicting invader impacts.

scholarly journals Predicting aquatic invasion in Adirondack lakes: a spatial analysis of lake and landscape characteristics

2021 ◽  
Author(s):  
Richard Ross Shaker ◽  
Artur D. Yakubov ◽  
Stephanie M. Nick ◽  
Erin Vennie-Vollrath ◽  
Timothy J. Ehlinger ◽  
...  
Keyword(s):  
At Risk ◽  
Invasive Species ◽  
Dreissena Polymorpha ◽  
Myriophyllum Spicatum ◽  
Management Strategies ◽  
Bythotrephes Longimanus ◽  
Potamogeton Crispus ◽  
Landscape Characteristics ◽  
Aquatic Invasion ◽  
Adirondack Lakes

Invasive species continue to pose major challenges for managing coupled human-environmental systems. Predictive tools are essential to maximize invasion monitoring and conservation efforts in regions reliant on abundant freshwater resources to sustain economic welfare, social equity, and ecological services. Past studies have revealed biotic and abiotic heterogeneity, along with human activity, can account for much of the spatial variability of aquatic invaders; however, improvements remain. This study was created to (1) examine the distribution of aquatic invasive species richness (AISR) across 126 lakes in the Adirondack Region of New York; (2) develop and compare global and local models between lake and landscape characteristics and AISR; and (3) use geographically weighted regression (GWR) to evaluate non-stationarity of local relationships, and assess its use for prioritizing lakes at risk to invasion. The evaluation index, AISR, was calculated by summing the following potential aquatic invaders for each lake: Asian Clam (Corbicula fluminea), Brittle Naiad (Najas minor), Curly-leaf Pondweed (Potamogeton crispus), Eurasian Watermilfoil (Myriophyllum spicatum), European Frog-bit (Hydrocharis morsus-ranae), Fanwort (Cabomba caroliniana), Spiny Waterflea (Bythotrephes longimanus), Variable-leaf Milfoil (Myriophyllum heterophyllum Water Chestnut (Trapa natans), Yellow Floating Heart (Nymphoides peltata), and Zebra Mussel (Dreissena polymorpha). The Getis-Ord Gi_ statistic displayed significant spatial hot and cold spots of AISR across Adirondack lakes. Spearman’s rank (q) correlation coefficient test (rs) revealed urban land cover composition, lake elevation, relative patch richness, and abundance of game fish were the strongest predictors of aquatic invasion. Five multiple regression global Poisson and GWR models were made, with GWR fitting AISR very well (R2 = 76–83%). Local pseudo-t-statistics of key explanatory variables were mapped and related to AISR, confirming the importance of GWR for understanding spatial relationships of invasion. The top 20 lakes at risk to future invasion were identified and ranked by summing the five GWR predictive estimates. The results inform that inexpensive and publicly accessible lake and landscape data, typically available from digital repositories within local environmental agencies, can be used to develop predictions of aquatic invasion with remarkable agreement. Ultimately, this transferable modeling approach can improve monitoring and management strategies for slowing the spread of invading species.

scholarly journals Warming shows differential effects on late-season growth and competitive capacity of Elodea canadensis and Potamogeton crispus in shallow lakes

Inland Waters ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 421-432 ◽  
Author(s):  
Xiufeng Zhang ◽  
Rikke Odgaard ◽  
Birgit Olesen ◽  
Torben L Lauridsen ◽  
Lone Liboriussen ◽  
...  
Keyword(s):  
Shallow Lakes ◽  
Elodea Canadensis ◽  
Potamogeton Crispus ◽  
Differential Effects ◽  
Late Season

scholarly journals Impact of riparian trees shade on aquatic plant abundance in conservation islands

2011 ◽  
Vol 70 (2) ◽  
pp. 245-258 ◽  
Author(s):  
Magdi Ali ◽  
Samar Hassan ◽  
Abdel-Samei Shaheen
Keyword(s):  
Aquatic Plant ◽  
Submerged Macrophytes ◽  
Myriophyllum Spicatum ◽  
Ceratophyllum Demersum ◽  
Submerged Plants ◽  
Plant Abundance ◽  
Potamogeton Crispus ◽  
Azolla Filiculoides ◽  
Riparian Trees ◽  
Significant Difference

Impact of riparian trees shade on aquatic plant abundance in conservation islands Temperature, acidity, light conditions, total dissolved salts, conductivity, dissolved oxygen, submerged macrophytes and shade and sun path directions were measured at 23 sites along the River Nile banks with aAcacia nilotica growing at water's edge around the First Cataract Conservation Islands. Ceratophyllum demersum and Potamogeton crispus were common in the shaded and unshaded zones, Myriophyllum spicatum and Vallisneria spiralis were found only in the unshaded zone and Azolla filiculoides only in the shaded zone. Banks of the sites surveyed were oriented to five directions (NW, SE, NE, SW, N). There is a significant difference in both the type and density of submerged plants growing under the shade of riparian trees (Acacia nilotica) as compared to unshaded areas. Water column irradiance is the most influential variable dictating the distribution of submerged plants. The area of the shade provided by riparian trees was affected by environmental and/or plant variables. Environmental variables comprised the daily course of the exposition to sun; and plant variables included the area of the tree crown, the height of the tree and geographical position of the tree in relation to sun exposition. Trees on the west bank of the islands at the SW-NE direction have the highest shading effect. The management of tree vegetationmight control incoming solar radiation affecting submerged macrophytes.

scholarly journals Macrophyte distribution and ecological status of the Turiec River (Slovakia): Changes after seven years

2009 ◽  
Vol 61 (2) ◽  
pp. 297-306 ◽  
Author(s):  
R. Hrivnák ◽  
Helena Oťaheľová ◽  
M. Valachovic
Keyword(s):  
New Species ◽  
Aquatic Macrophytes ◽  
Myriophyllum Spicatum ◽  
Ecological Status ◽  
The Other ◽  
Filamentous Algae ◽  
River Section ◽  
Abundance Distribution ◽  
Potamogeton Crispus ◽  
The Mean

Characteristics of diversity, abundance, distribution, and ecological status of aquatic macrophytes were observed in 2000 and 2007 on a circa 4.5 km long section of the Turiec River using Kohler's method. In comparison to 2000, the total number of macrophytes in 2007 increased markedly (from 25 to 35), although only the numbers of amphi?phytes and helophytes were changed substantially. The number of hydrophytes increased from 11 to 12; an invasive, Elodea canadenis, was the only new species. The relative plant mass of hydrophytes represents the bulk of all recorded species (95 and 80% in 2000 and 2007, respectively), and it was changed for most hydrophytes. The most significant changes were detected for Myriophyllum spicatum (decrease), filamentous algae (decrease), and Potamogeton crispus (increase). In 2007, the mean mass total (MMT) sum of hydrophytes decreased from 16.46 to 14.5. On the other hand, the MMTsum of amphiphytes and helophytes doubled in value (7.4 and 14.1 in 2000 and 2007, respectively). Within hydrophytes, Batrachium species (including B. aquatile and B. trichophyllum), Myriophyllum spicatum, and Potamogeton crispus were ubiquitous (distribution ratio d > 0.5) in 2000, whereas in 2007 only Batrachium species and Potamogeton crispus were ubiquitous. At all times, Batrachium species were the most frequent species in the study area, and their abundance was relatively high (MMT> 2.5). A poor ecological status (MMP = 0.378 and MMP = 0.333 in 2000 and 2007, respectively) of the surveyed river section was found in both years, but a slight decline of quality as determined on the basis of aquatic plants was observed after 7 years.

Sign in / Sign up

Export Citation Format

Share Document