Could spatial heterogeneity in flow disturbance drive temporal stability of native–invasive species co‐occurrence in riverscapes?

2021 ◽  
Author(s):  
Nixie C. Boddy ◽  
Angus R. McIntosh
Keyword(s):  
Invasive Species ◽  
Spatial Heterogeneity ◽  
Temporal Stability ◽  
Flow Disturbance ◽  
Native Invasive

scholarly journals High parasite infection level in non-native invasive species: it is just a matter of time

Ecography ◽  
2017 ◽  
Vol 41 (8) ◽  
pp. 1283-1294 ◽  
Author(s):  
M. Kołodziej-Sobocińska ◽  
M. Brzeziński ◽  
A. Niemczynowicz ◽  
A. Zalewski
Keyword(s):  
Invasive Species ◽  
Parasite Infection ◽  
Infection Level ◽  
Native Invasive ◽  
High Parasite

scholarly journals The Competitive Response of Panicum virgatum Cultivars to Non-Native Invasive Species

2014 ◽  
Vol 4 (2) ◽  
Author(s):  
Lauren M. Schwartz ◽  
David J. Gibson
Keyword(s):  
Invasive Species ◽  
Panicum Virgatum ◽  
Competitive Response ◽  
Native Invasive

The Introduction, Evaluation, Escape from Cultivation, and Ongoing Range Expansion of Ligustrum spp. On and Around the Texas A&M University Campus

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 493e-493
Author(s):  
Edward McWilliams ◽  
Gretchen Rector
Keyword(s):  
Invasive Species ◽  
Ornamental Plant ◽  
Lag Phase ◽  
Sapium Sebiferum ◽  
University Campus ◽  
Plant Introductions ◽  
Ligustrum Lucidum ◽  
Ulmus Parvifolia ◽  
Surrounding Areas ◽  
Native Invasive

For decades, the Texas A&M Univ. campus has been a center for USDA ornamental plant introductions. Historically, horticultural nurseries on the Texas A&M Univ. campus have served as foci from which exotic plants have dispersed and colonized surrounding areas. Pistachia chinensis, Ulmus parvifolia, Ligustrum quihoui, Ligustrum lucidum, and Sapium sebiferum have all established themselves on or near the campus and can be traced back to early introductions. Many Ligustrum taxa including selections of L. quihoui were screened at Texas A&M College in the 1930s. Clones of this species varied greatly in their ability to naturalize. The invasion lag phase and range of expansion varied with both clone and species. It is suggested that potential exotic ornamental plant introductions be carefully evaluated for their potential to become non-native invasive species as well as for their ornamental characteristics.

Allelopathic disruptions of biotic interactions due to non-native plants.

2020 ◽  
pp. 270-280
Author(s):  
Lauren M. Smith-Ramesh
Keyword(s):  
Invasive Species ◽  
Mycorrhizal Fungi ◽  
Native Species ◽  
Invasive Plant ◽  
Native Plants ◽  
Biotic Interactions ◽  
Resident Species ◽  
Negative Impacts ◽  
And Performance ◽  
Native Invasive

Abstract Allelopathy, or the process by which plants influence the growth and performance of their neighbours through the release of chemicals, may play a key role in mediating the impacts of non-native invasive species on their neighbours. The Novel Weapons Hypothesis purports that non-native invasive species are in part successful because they produce harmful allelochemicals to which resident species are particularly susceptible because residents lack a shared evolutionary history with the invader. While allelopathic non-native invaders may reduce the growth and performance of neighbours through direct phytotoxicity, they may more often exert negative impacts through disruption of biotic interactions among resident species. Allelopathy by non-native plants may disrupt mutualisms between resident plants and microbes, plant-herbivore interactions or existing competitive and facilitative interactions among resident plants. For example, several non-native plants are known to disrupt the mutualism between resident plants and mycorrhizal fungi, reducing resident plant fitness to the benefit of the invader. Allelopathic non-natives may also disrupt interactions among resident plants and their herbivores when allelochemicals also influence herbivore behaviour or fitness. Alternatively, biotic interactions can also be protective for resident species, which may be less susceptible to the impacts of non-native species when their mutualisms are intact. As we advance our understanding of allelopathy and its role in mediating the impacts of invasive plant species, we may gain new insights by viewing invasions within a network context rather than focusing on pairwise interactions.

Spatial heterogeneity and temporal stability characterize future climatic refugia in Mediterranean Europe

2022 ◽  
Author(s):  
Aggeliki Doxa ◽  
Yiannis Kamarianakis ◽  
Antonios D. Mazaris
Keyword(s):  
Spatial Heterogeneity ◽  
Temporal Stability ◽  
Mediterranean Europe

Competitive effect of a native-invasive species on a threatened shrub in a Mediterranean dune system

Oecologia ◽  
2014 ◽  
Vol 177 (1) ◽  
pp. 133-146 ◽  
Author(s):  
M. Paz Esquivias ◽  
María Zunzunegui ◽  
Mari Cruz Díaz Barradas ◽  
Leonor Álvarez-Cansino
Keyword(s):  
Invasive Species ◽  
Competitive Effect ◽  
Dune System ◽  
Native Invasive

Green alder encroachment in the European Alps: The need for analyzing the spread of a native-invasive species across spatial data

CATENA ◽  
2017 ◽  
Vol 159 ◽  
pp. 149-158 ◽  
Author(s):  
Chatrina Caviezel ◽  
Matthias Hunziker ◽  
Nikolaus J. Kuhn
Keyword(s):  
Invasive Species ◽  
Spatial Data ◽  
European Alps ◽  
Green Alder ◽  
Native Invasive

Geographical differences in competitive hierarchy in a native–invasive system

2020 ◽  
Vol 131 (3) ◽  
pp. 632-646
Author(s):  
Eudald Pujol-Buxó ◽  
Antigoni Kaliontzopoulou ◽  
Gerezti Unanue-Goikoetxea ◽  
Bàrbara Ambrós ◽  
Gustavo A Llorente
Keyword(s):  
Invasive Species ◽  
Adaptive Responses ◽  
Rapid Adaptation ◽  
Geographical Differences ◽  
Evolutionary Changes ◽  
Good Target ◽  
Ecological Shifts ◽  
Novel Interactions ◽  
Native Invasive ◽  
Plastic Responses

Abstract Biological invasions can create novel competitive interactions and force ecological shifts in both native and invasive species. Anuran tadpoles are able to modify their behaviour, morphology, growth and development to cope with competitive pressure. This plasticity is a good target for natural selection and can drive rapid evolutionary changes in response to novel interactions. Here, we explore changes in plastic responses and fitness of competing invasive and native tadpoles by exposing tadpoles from different locations with contrasting evolutionary histories to the same set of varied competitive conditions. Eggs were collected from one site near the first introduction of the invasive frog (~110 years of coexistence) and from a second site that was invaded recently. We hypothesized less favourable outcomes for the invasive species in long-coexisting populations, where the native competitor might have developed adaptive responses. Most results support the hypothesis. Where the invasion was older, invasive tadpoles exposed to native competitors grew less, developed more slowly and displayed morphologies linked to competitive stress, whereas the developmental stability and canalization of native tadpoles increased. On the whole, the asymmetric competitive relationship thus appeared to approach symmetry after ~35 generations, highlighting a noteworthy example of rapid adaptation after an invasion.

scholarly journals Quantifying 87Sr/86Sr temporal stability and spatial heterogeneity for use in tracking fish movement

2019 ◽  
Vol 76 (6) ◽  
pp. 928-936 ◽  
Author(s):  
Lindsy R. Ciepiela ◽  
Annika W. Walters
Keyword(s):  
Seasonal Variation ◽  
Spatial Heterogeneity ◽  
Temporal Stability ◽  
High Accuracy ◽  
Fish Movement ◽  
Sample Collection ◽  
Novel Approach ◽  
Repeated Sampling ◽  
Platte River Basin ◽  
The Cost

The specificity and accuracy of inferred fish origin and movement relies on describing spatial heterogeneity and temporal stability of environmental signatures. But the cost and logistics of sample collection often precludes the complete quantification of environmental signature temporal stability and spatial heterogeneity. We used repeated sampling and a novel approach (Bayesian ridge regression, BRR) to quantify the temporal stability and spatial heterogeneity of 87Sr/86Sr, respectively. We explained 86% of observed variation in 87Sr/86Sr using a BRR model and estimated 87Sr/86Sr throughout the Upper North Platte River Basin with high accuracy (±0.00106). Year to year variation in 87Sr/86Sr signatures ranged from 0.00007 to 0.00073 (SD), while seasonal variation ranged from 0.00091 to 0.00134 (SD). We then assessed the specificity and discussed the accuracy of inferring movement using three scenarios of described spatial heterogeneity. Our results indicate reliable inference of fish movement requires comprehensive quantification of spatial heterogeneity and temporal variation in environmental signatures.

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