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135 results for “invasion ecology”
New indicators of ecological resilience and invasion resistance to support prioritization and management in the sagebrush biome, United States
<p>Ecosystem transformations to altered or novel ecological states are accelerating across the globe. Indicators of ecological resilience to disturbance and resistance to invasion can aid in assessing risks and prioritizing areas for conservation and restoration. The sagebrush biome encompasses parts of 11 western states and is experiencing rapid transformations due to human population growth, invasive species, altered disturbance regimes, and climate change. We built on prior use of static soil moisture and temperature regimes to develop new, ecologically relevant and climate-responsive indicators of both resilience and resistance. Our new indicators were based on climate and soil water availability variables derived from process-based ecohydrological models that allow predictions of future conditions. We asked: (1) Which variables best indicate resilience and resistance? (2) What are the relationships among the indicator variables and resilience and resistance categories? (3) How do patterns of resilience and resistance vary across the area? We assembled a large database (n = 24,045) of vegetation sample plots from regional monitoring programs and derived multiple climate and soil water availability variables for each plot from ecohydrological simulations. We used USDA Natural Resources Conservation Service National Soils Survey Information, Ecological Site Descriptions, and expert knowledge to develop and assign ecological types and resilience and resistance categories to each plot. We used random forest models to derive a set of 19 climate and water availability variables that best predicted resilience and resistance categories. Our models had relatively high multiclass accuracy (80% for resilience; 75% for resistance). Top indicator variables for both resilience and resistance included mean temperature, coldest month temperature, climatic water deficit, and summer and driest month precipitation. Variable relationships and patterns differed among ecoregions but reflected environmental gradients; low resilience and resistance were indicated by warm and dry conditions with high climatic water deficits, and moderately high to high resilience and resistance were characterized by cooler and moister conditions with low climatic water deficits. The new, ecologically-relevant indicators provide information on the vulnerability of resources and likely success of management actions and can be used to develop new approaches and tools for prioritizing areas for conservation and restoration actions.</p>
Figure 1 in Invasion hotspots and ecological saturation of streams across the Hawaiian archipelago
Figure 1. – Generalized linear model of sampling effort on species presence across all Hawaiian watersheds.
Data from: A multifaceted ecological assessment reveals the invasion of the freshwater red macroalga Montagnia macrospora (Batrachospermales, Rhodophyta) in Taiwan
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Data from: Ecological mechanism of climate-mediated selection in a rapidly evolving invasive species
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New indicators of ecological resilience and invasion resistance to support prioritization and management in the sagebrush biome, United States
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Data from: Species distribution models of the Spotted Wing Drosophila (Drosophila suzukii, Diptera: Drosophilidae) in its native and invasive range reveal an ecological niche shift
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Datafile - In situ adaptation and ecological release facilitate the occupied niche expansion of an invasive Madagascan day gecko in Florida
<p><u>Aim</u> To investigate whether the frequently advocated climate-matching species distribution modelling approach could predict the well-characterized colonization of Florida by the Madagascar giant day gecko <i>Phelsuma grandis</i>.</p> <p><u>Location</u> Madagascar and Florida, USA.</p> <p><u>Methods</u> To determine the climatic conditions associated with the native range of <i>P</i>. <i>grandis</i>, we used native-range presence-only records and <i>Bioclim</i> climatic data to build a Maxent species distribution model and projected the climatic thresholds of the native range onto Florida. We then built an analogous model using Florida presence-only data and projected it onto Madagascar. We constructed a third model using native-range presences for both <i>P</i>. <i>grandis</i> and the closely related parapatric species <i>P</i>. <i>kochi</i>.</p> <p><u>Results</u> Despite performing well within the native range, our Madagascar <i>Bioclim</i> model failed to identify suitable climatic habitat currently occupied by <i>P</i>. <i>grandis</i> in Florida. The model constructed using Florida presences also failed to reflect the distribution in Madagascar by over-predicting distribution, especially in western areas occupied by <i>P</i>. <i>kochi</i>. The model built using the combined <i>P</i>. <i>kochi</i>/<i>P</i>. <i>grandis</i> dataset modestly improved the prediction of the range of <i>P</i>. <i>grandis</i> in Florida, thereby implying competitive exclusion of <i>P</i>. <i>grandis</i> by <i>P</i>. <i>kochi</i> from habitat within the former's fundamental niche. These findings thus suggest ecological release of <i>P</i>. <i>grandis</i> in Florida. However, because ecological release cannot fully explain the divergent occupied niches of <i>P</i>. <i>grandis</i> in Madagascar versus Florida, our findings also demonstrate some degree of <i>in situ</i> adaptation in Florida.</p> <p><u>Main conclusions</u> Our models suggest that the discrepancy between the predicted and observed range of <i>P</i>. <i>grandis</i> in Florida is attributable to either <i>in situ</i> adaptation by <i>P</i>. <i>grandis</i> within Florida, or a combination of such <i>in situ</i> adaptation <i>and </i>competition with <i>P</i>. <i>kochi</i> in Madagascar. Our study demonstrates that climate-matching species distribution models can severely underpredict the establishment risk posed by non-native herpetofauna.</p>
Figure 3 in Establishment of an expansion-predicting model for invasive alien cerambycid beetle Aromia bungii based on a virtual ecology approach
Figure 3. Flow chart of simulation procedure the study.
Figure 1 in Establishment of an expansion-predicting model for invasive alien cerambycid beetle Aromia bungii based on a virtual ecology approach
Figure 1. Study area and simulation unit
Fig.11 in First Records Of New Aquatic Predator Pelodiscus Sinensis (Wiegmann 1835) In Latvia And Preliminary Ecological Risk Assessment Of The Invasion For Autochthonic Emys Orbicularis (Linnaeus 1758)
Fig.11. Peculiarities of P.sinensis findings waterbodies water connectivity in Latvia.
Fig.1 in First Records Of New Aquatic Predator Pelodiscus Sinensis (Wiegmann 1835) In Latvia And Preliminary Ecological Risk Assessment Of The Invasion For Autochthonic Emys Orbicularis (Linnaeus 1758)
Fig.1. Placement of the findings of Pelodiscus sinensis in Latvia.
Fig. 4 in First Records Of New Aquatic Predator Pelodiscus Sinensis (Wiegmann 1835) In Latvia And Preliminary Ecological Risk Assessment Of The Invasion For Autochthonic Emys Orbicularis (Linnaeus 1758)
Fig. 4. Ventral side of the first P.sinensis #PeSi0001 found in Latvia.
Fig. 10 in First Records Of New Aquatic Predator Pelodiscus Sinensis (Wiegmann 1835) In Latvia And Preliminary Ecological Risk Assessment Of The Invasion For Autochthonic Emys Orbicularis (Linnaeus 1758)
Fig. 10. Peculiarities of P.sinensis findings waterbodies size in Latvia.
Data from: Mismatches between the resources for adult herbivores and their offspring suggest invasive Spartina alterniflora is an ecological trap
1. Plant invasions can alter the behavior and performance of native herbivorous insects because the insects are evolutionarily naïve to the novel plants. An ecological trap results when native insects prefer invasive plants over their native hosts but suffer reduced fitness on the invaders. Although such traps are predicted to occur frequently given the prevalence of invasive plants, empirical support for ecological traps and their underlying mechanisms remains sparse. 2. We examined the potential for the invasive plant Spartina alterniflora to act as an ecological trap for the native moth Laelia coenosa, which previously fed mainly on the indigenous plant Phragmites australis in a Chinese saltmarsh. We surveyed Laelia egg densities on Spartina and Phragmites in the field, and determined adult oviposition preference and offspring development on the two plant species. To investigate the causes of adult preference and offspring performance patterns, we compared resource abundance in the field, plant-odor attractiveness, and leaf nutritional and defensive traits between Spartina and Phragmites. 3. We found that Laelia egg density and female preference for ovipositing were higher on Spartina than Phragmites. However, performance of offspring was poorer on Spartina than Phragmites. Spartina dominated a larger area and had greater leaf biomass than Phragmites in the field, and volatile odors released by Spartina were more attractive to Laelia females than those released by Phragmites. Although leaf C, C:P ratio, and terpenoid content did not differ significantly between the two plant species, Spartina leaves were tougher and more waxy, had lower N, and had higher concentrations of alkaloids and phenolics than Phragmites leaves. 4. Synthesis: Our data suggest that invasive Spartina can create an ecological trap for the native insect Laelia. This trap appears to result from environmental cues (resource availability and leaf odors) that attract the herbivore to the plant, but do not reliably predict the dietary qualities (nutrition and defenses) that negatively affect herbivore offspring performance. These findings reveal an important negative effect of plant invasions on resident herbivores and highlight the roles of resource availability and plant traits at different life stages of the insect.
Additional climate information for research paper «Ecological and Geographical Analysis of Distribution of Heracleum persicum, H. mantegazzianum and H. sosnowskyi on The Northern Limit of Its Invaded Range in Europe» submitted to Russian Journal of Biological Invasions
<p><strong>Additional climate information for research paper «Ecological and Geographical Analysis of Distribution of Heracleum persicum, H. mantegazzianum and H. sosnowskyi on The Northern Limit of Its Invaded Range in Europe» submitted to Russian Journal of Biological Invasions </strong></p>
Data for: Insights for modern invasion ecology from biotic changes of the Clarksville Phase of the Richmondian Invasion (Ordovician, Katian)
<p>The frequency of biotic invasions in modern ecosystems is increasing due to global trade moving taxa outside their native ranges and climate change facilitating establishment of taxa in previously inhospitable regions. Thus, developing a holistic understanding of biotic invasions and how they impact ecosystems over different timescales—from annual to geologic time scales—is vital. Herein we examine a geologically brief invasion event, the Clarksville Phase of the Richmondian Invasion. Prior analyses have established general ecological and evolutionary patterns across the entire Richmondian Invasion, but recent sequence stratigraphic refinement makes analysis of individual invasion pulses possible for the first time. We examine biotic change across the Clarksville Phase and identify invasion impacts on diversity, paleocommunity composition, and niche stability. Invader arrival and success were strongly linked to increased propagule pressure facilitated by sea level changes. Invaders initially colonized deep subtidal environments and then moved offshore facilitated by rapid niche evolution during the invasion interval. Invasive taxa that attained the largest population sizes belonged to previously underutilized ecological guilds. Overall, the introduction of the invasive taxa resulted in increased diversity that was maintained into the post-invasion interval accompanied by a change in community composition in which the invaders became dominant paleocommunity members. Combined these analyses document a biotic invasion facilitated by climate change which increased local diversity through invaders occupying underutilized ecospace and competition-related niche contraction on millennial time scales. Developing a long-term perspective to accompany shorter-term studies facilitates predicting the long-term impacts of modern invasions and creating better-informed policies and practices. </p>
Ecological performance of native and invasive benthic freshwater fishes under elevated temperature
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Data from: Diverse ecological strategies increase invasion resistance in an experimental grassland restoration
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Data for: Integration of an invasive plant in hummingbird and flower mite networks is driven by ecological fitting and generalization
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Data for: Insights for modern invasion ecology from biotic changes of the Clarksville Phase of the Richmondian Invasion (Ordovician, Katian)
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.