Wisconsin’s changing climate and forecasting invasive species spread.
Jason E Granberg Wisconsin Department of Natural Resources Climate change and invasives – Impacts, future invaders, and adaptation approaches November 13, 2019
Wisconsins changing climate and forecasting invasive species spread. - - PowerPoint PPT Presentation
Wisconsins changing climate and forecasting invasive species spread. Jason E Granberg Wisconsin Department of Natural Resources Climate change and invasives Impacts, future invaders, and adaptation approaches November 13, 2019 Major
Jason E Granberg Wisconsin Department of Natural Resources Climate change and invasives – Impacts, future invaders, and adaptation approaches November 13, 2019
scores
expected to shift with changes in precipitation and temperature.
adjacent states. Known as “climate analogues”.
https://ag.purdue.edu/indianaclimate/indiana-climate-report/
Since there are thousands of species, how do we select the targets for analysis? See what species are found in climate analogue states.
https://www.wicci.wisc.edu/climate-map.php
WICCI has a climate analogue match tool. Predicts how the target area may appear under future climate scenarios. Analogue states include: Wisconsin, Illinois, Indiana, Iowa, Kansas, Minnesota, Nebraska, Ohio, Michigan, & Virginia
states.
Invasive Plant list
Summaries (High risk species)
& terrestrial habitats.
USFWS’ Risk Assessment Mapping Program (RAMP)
screening summaries.
selected global climate stations and matches them to climate stations within North America.
now then compares where it could be using 16 climate variables.
matching at mid- and end-century.
Temperature Variables Precipitation Variables Average Mean Temperature Annual Precipitation Max Temperature of Warmest Month Precipitation of Wettest Month Min Temperature of Coldest Month Precipitation of Driest Month Temperature Annual Range Precipitation of Seasonality Mean Temperature of Wettest Quarter Precipitation of Wettest Quarter Mean Temperature of Driest Quarter Precipitation of Driest Quarter Mean Temperature of Warmest Quarter Precipitation of Warmest Quarter Mean Temperature of Coldest Quarter Precipitation of Coldest Quarter
Biodiversity Information Facility (GBIF). It has 987,000,000+ species records.
and joins them to climate stations.
local verified records.
Example of GBIF records linked to climate stations
Current emissions scenario 2050 scenario 2070 scenario
Values range from 0 (Blue) to 5 (Yellow) to 10 (Red). The warmer the colors, the better the climate match & suitability. Scores 6+, climate matches.
Example: Flowering rush (Butomus umbellatus)
How suitable is this species to Wisconsin? National scores clipped to Wisconsin, southern Lake Superior and Lake Michigan. Scores interpreted using Score Average. If the species’ average is greater than 6, then the climate is suitable for the species at some point during its life history.
Current Climate: 78% target species are compatible. 2050 Climate: 76% target species are compatible. 2070 Climate: 74% target species are compatible. Range expansion = “Winners”: 28 species increase from unsuitable in current climate to suitable in future climate. Range retraction = “Losers”: 33 species decrease from suitable in current climate to unsuitable in future climate.
Queen Anne’s Lace
spotted knapweed
Sulphur cinquefoil
meadow hawkweed
wild chervil
yellow salsify
tall hawkweed
hoary alyssum
wild parsnip
winter creeper
Austrian pine
sweetscented bedstraw
rose of Sharon
shrub lespedeza
Chinese silvergrass
crossflower
border privet
annual honesty
bigleaf periwinkle
Euonymus fortunei winter creeper Pinus nigra Austrian pine Galium odoratum sweetscented bedstraw Hibiscus syriacus rose of Sharon Miscanthus sinensi Chinese silvergrass Chorispora tenella crossflower Ligustrum obtusifolium border privet Vinca major bigleaf periwinkle
Agrostis gigantea redtop Ambrosia artemisiifolia annual ragweed Alnus glutinosa European alder Veronica officinalis common speedwell Dactylis glomerata
Phleum pratense timothy Morus alba white mulberry Acorus calamus calamus Phragmites australis common reed Lonicera tatarica Tatarian honeysuckle Rumex crispus curly dock Berberis thunbergii Japanese barberry Salix alba white willow Achillea millefolium common yarrow Trifolium pratense red clover Elaeagnus angustifolia Russian olive Phalaris arundinacea Reed canarygrass Stellaria media common chickweed Solanum dulcamara climbing nightshade Ranunculus acris tall buttercup
Eichhornia crassipes common water hyacinth* Polygonum caespitosum Oriental Lady’s thumb Lonicera sempervirens trumpet honeysuckle Rubus phoenicolasius wine raspberry Petasites hybridus pestilence wort Marsilea quadrifolia European waterclover Jacobaea vulgaris stinking willie Microstegium vimineum Nepalese browntop Ligustrum sinense Chinese privet Schoenoplectiella mucronate bog bulrush Persicaria perfoliata Asiatic tearthumb Saccharum ravennae ravennagrass Bothriochloa bladhii Caucasian bluestem Epilobium parviflorum mallflower hairy willowherb Juncus inflexus European meadowrush Kummerowia striata Japanese clover Buddleja davidii
Arundo donax giant reed Carex acutiformis lesser pond sedge Mentha pulegium pennyroyal
* Site in Wisconsin has been controlled.
Eichhornia crassipes common water hyacinth Lonicera sempervirens trumpet honeysuckle Petasites hybridus pestilence wort Jacobaea vulgaris stinking willie Persicaria perfoliata Asiatic tearthumb Bothriochloa bladhii Caucasian bluestem Juncus inflexus European meadowrush Buddleja davidii
Carex acutiformis lesser pond sedge
Polygonum caespitosum Oriental Lady’s thumb Rubus phoenicolasius wine raspberry Marsilea quadrifolia European waterclover Microstegium vimineum Nepalese browntop / Japanese stiltgrass Schoenoplectiella mucronate bog bulrush Saccharum ravennae ravennagrass Epilobium parviflorum mallflower hairy willowherb Kummerowia striata Japanese clover
watercress
curly pondweed
waterthyme
brittle waternymph
Eurasian watermilfoil
starry stonewort
yellow floatingheart
sacred lotus
common water hyacinth
Brazilian waterweed
European waterclover
water chestnut
Eichhornia crassipes common water hyacinth Egeria densa Brazilian waterweed Marsilea quadrifolia European waterclover Trapa natans water chestnut
zebra mussel
common carp
rusty crayfish
spiny waterflea
quagga mussel
Round goby
Chinese mystery snail
White perch
Alewife
a waterflea
Chinook salmon
White catfish
Amazon sailfin catfish
redbelly tilapia
Chinese sleeper
Nile tilapia
wels catfish
Amur bitterling
Wakasagi
Moazambique tilapia
stone moroko
Ameiurus catus White catfish Pterygoplichthys pardalis Amazon sailfin catfish Tilapia zillii redbelly tilapia Perccottus glenii Chinese sleeper Oreochromis niloticus Nile tilapia Silurus glanis wels catfish Rhodeus sericeus Amur bitterling
Hypomesus nipponensis Wakasagi Oreochromis mossambicus Moazambique tilapia Pseudorasbora parva stone moroko
a list
records.
are better
poor RAMP fitting
RAMP score of 5, but is a new threat in Wisconsin.
at state scale.
another.
https://www.eddmaps.org/rangeshiftlisting/ Tool developed by Dr. Jenica Allen of Mount Holyoke College Uses 13 models for species predictions
EDDMapS has 13
the sensitivity. Does at least 1 model suggest change?
Do multiple models needs to suggest change?
Southeastern Wisconsin Invasive Species Consortium 2019 Annual Educational Symposium
Presentation References and Resources
wicci.wisc.edu
Working Group webpage)
nelson.wisc.edu/ccr/
https://people.umass.edu/riscc/
(adaptation menus, demonstration sites, workshops)
Amy Staffen Wisconsin DNR, Natural Heritage Conservation Program Wisconsin Initiative on Climate Change Impacts (WICCI)
Approaching Climate Adaptation with Logic and Intentionality
I would now like to tell you about how my WICCI colleagues and me have worked closely with the Northern Institute of Applied Climate Science, or NIACS, to bridge the gap between climate science and on-the-ground management. 1
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WICCI Plants & Natural Communities Working Group
Bridging the gap between science and land management
impact the sites that I manage?
services?
that I go about my work?
WDNR WDNR wiscnews.com
Under the larger WICCI umbrella, I am the co-chair of the Plants and Natural Communities Working Group. This group has assumed a leadership role in helping land managers and planners [CLICK] understand how the sites and resources that they manage are vulnerable to climate change [CLICK], and what actions they can take to promote resilience, protect species, and retain ecosystem services. [CLICK] We also help managers strategize how changing environmental conditions may affect the way they go about their work.
1. Climate Change Vulnerability Assessments 2. Menus of Adaptation Actions 3. Adaptation Workshops 4. Adaptation Demonstration Sites
Amy Staffen
Building an Adaptation Toolbox
The WICCI PNC WG is bridging the gap between science and management through the development of an adaptation toolbox of sorts. Thus far, we’ve produced 4 types of toolbox resources: 1) climate change vulnerability assessments for the natural communities of Wisconsin, 2) menus of climate adaptation options, 3) both general and property specific adaptation workshops, and 4) adaptation demonstration sites. I’ll be telling you about each of these four resources during this presentation. 3
Climate Change Vulnerability Assessments (CCVAs)
for Wisconsin’s Natural Communities
western Upper Peninsula of Michigan →
communities ↓
Let’s delve into CCVAs first. After NIACS produced a climate vulnerability assessment for forests of northern WI and the western UP (shown here), we were inspired to apply the same methodology for the remaining 52 natural communities of Wisconsin. NIACS was a vital partner in providing guidance as we applied their methodology to meet our unique needs. 4
CCVAs: 52 Technical Bulletins
For those 52 natural communities, we produced technical bulletins that was targeted toward natural resource professionals and academicians. Typically 7-8 pages, these bulletins include an executive summary, a detailed summary of potential impacts, and factors that most influence adaptive capacity. 5
CCVAs 10 Broad Community Group Factsheets
For a broader, less-technical audience, we created two-page fact sheets for the 10 broad community groups that you see listed here. Each fact sheet summarizes climate threats and impacts on that group, special characteristics or features that confer adaptive capacity, and win-win actions that practitioners can take to mitigate or moderate climate change impacts. These CCVAs are useful for setting priorities for restoration, management, and protection of natural areas. 6
Menus of Adaptation Options
Show us some examples!!
Richard Staffen
Forests Urban Forests Forested Watersheds Wetlands Grasslands (future)
Use these menus with the Adaptation Workbook
The next type of resource that NIACS and WICCI have developed and continue to develop are “Menus of Adaptation Strategies and Approaches.” These menus provide managers in the Midwest and Northeast regions of the U.S. with a highly ordered list of concepts, strategies and approaches that facilitate climate adaptation while meeting management goals and objectives. These are specifically designed for use with the NIACS Adaptation Workbook, a decision-support framework that I’ll be talking about
forests, urban forests, forested watersheds, and wetlands. We hope to produce a menu for grasslands in the future. I’d like to share examples of tactics from the “Wetland Adaptation Menu” that relate to invasive species, and will thus be of interest to you. 7
Utilize on-the-ground phenological cues rather than calendar dates to identify appropriate treatment windows for invasives
Jim Rathert/mdc.mo.gov Ohio State University Sample Tactics from Wetland Adaptation Menu
For example, an adaptation tactic that we recommend in the wetland menu is to utilize
treatment windows for invasives. Let’s consider using prescribed fire to control non- native invasive grasses such as reed canary grass. One typically burns these in “late spring,” but with climate change, this seasonal window is shifting. In this case, you need to periodically assess your target site, and time your burn for when the reed canary grass is actively growing but before native plants have broken dormancy. 8
Monitor environmental conditions to maximize herbicide efficacy
Sample Tactics from Wetland Adaptation Menu
High temps High relative humidity High wind ✓ Spray early in the morning or in the evening when temps are low, RH is high, and there is a mild but steady wind ✓ Use surfactant or adjuvant to enhance herbicide penetration ✓ Consult product labels carefully Let’s review what we know about environmental conditions and herbicide efficacy: high temps, high RH and high wind can all reduce herbicide penetration and increase
evening when temps are low, RH is high, and there is a mild but steady wind. If your herbicide still doesn’t work, it could be that your target invasives are showing that phenotypic plasticity that we talked about ealier – maybe they’ve developed a thicker waxy cuticle in response to moisture stress, for example. To hedge your bets toward success, talk to your herbicide supplier about adding a surfactant or adjuvant to enhance herbicide penetration. And, as always, for your safety and to maximize success, carefully consult the herbicide label to see what the optimum conditions are for application. 9
Monitor environmental conditions to maximize herbicide efficacy
Logging observations is key!
Sample Tactics from Wetland Adaptation Menu
Invasives Logbook
If you keep careful records of your herbicide applications and their relative effectiveness, you will have an important tool to aid in climate change adaptation. Key factors to note in your log book include species treated, date of treatment, time of day, environmental conditions (especially the four noted at left), herbicide formulation, application method, phenological cues, and effectiveness. 10
Monitor sites that are vulnerable to invasions and control new infestations early
such as tornado or drought
Sample Tactics from Wetland Adaptation Menu
Monitoring was important before climate change – now it’s doubly important. In addition to your typical monitoring targets for new invasions (roads, trails, parking areas) you now need to watch areas that are prone to flooding and erosion, and other areas that become disturbed following extreme climate events. 11
Minimize soil disturbance, and promptly revegetate bare soils to prevent establishment of non-native invasives.
by using erosion control fabric or weed-free mulch certified by Wisconsin Crop Improvement Association.
encourage invasives.
Sample Tactics from Wetland Adaptation Menu
When soil disturbance does occur, an ounce of prevention is worth a pound of cure! If you do plantings, you may want to secure those bare soils from washing away during a severe storm by installing erosion control fabric or weed-free mulch. Also, using cover crops is a great idea, but avoid using legumes, as the nitrogen that they add to soils will
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Adjust management priorities to invasion fronts
Sample Tactics from Wetland Adaptation Menu
Setting your management priorities to invasion fronts will save time, money and resources, and make overall success more likely. This principle can be applied at the site level or the regional level. 13
In this schema developed by my colleague Fred Clark, an invasives manager divides an area into three management zones based on the invasion front. In the highest-density area, your goal will be to “Slow the Spread,” or containment. As you move away from that zone, however, the situation becomes more manageable, though not to the point
no to very light infestation can be labeled Zero Tolerance zones, where existing small populations can be eliminated, and new invasions can be pounced on. Always start work in your cleanest areas with the least amount of invasives! 14
Control and report new invasives
mipn.org Webpage
Learn what new species are likely to appear in your area “Midwestern Early Detection Plant Species” Report new invasives or unknown species that are spreading aggressively to EDDMapS/GLEDN "Early Detection Rapid Response" Seek out funding or assistance for rapid response to new invasions ”Cooperative Weed Management Area Resources” and “Grants”
Sample Tactics from Wetland Adaptation Menu
Controlling and reporting new invasives is extremely important in the era of climate
change, we need your eyes on the ground to help us detect and control new invaders. The Midwest Invasive Plant Network website can offer one-stop shopping when it comes to this approach. [Read the chart] 15
Explore new opportunities offered with climate change Opportunities Caveats and Considerations
Drought/Low Water Table ↓ Growing season mowing in wetlands
hummock microtopography Mild winters ↓ Conduct prescribed burns
but will not likely kill it
non-native cool-season grasses
Sample Tactic from Wetland Adaptation Menu
Lastly, while it seems like the emphasis relating to climate change is consistently negative, we need to seek out silver linings in this situation. For example, wetland managers may see more opportunities for growing season mowing of invasives if drought dries the ground sufficiently. Care should be taken, though, to avoid destruction of sedge hummock microtopography, if present. Also, there have been
and dry conditions (for example, on dry prairies). While this is good for setting back brush, it probably won’t kill it. Also, if a site is dominated by non-native cool-season grasses, a dormant season burn will only create perfect conditions for them to shoot up early in the spring with the warming sun on blackened soil and present double the amount of competition for the native warm-season grasses that come up later. 16
Getting help with Adaptation Workbook and Menus: Adaptation Workshops!
adaptationworkbook.org As I mentioned previously, the adaptation menus are intended for use with the “Adaptation Workbook,” ideally during interactive workshops where a community of stakeholders follow this structured framework for a particular site. The Adaptation Workbook was created by NIACS. It is also available as a really slick online tool that resembles TurboTax. Adaptation Workbook is a structured process for considering potential impacts of climate change on specific sites and how site managers can meet their objectives in light of those impacts. The process is completely flexible to accommodate a wide variety of geographic locations, scales, ecosystem types, and management goals. NIACS staff are available to help customers work through the workbook process. 17
The Adaptation Workbook process consists of 5 basic steps: 1) Define goals and
considering those climate impacts; 4) Identify adaptation approaches and tactics; and 5) Monitor effectiveness of implemented actions. 18
Final Outcome: A completed Workbook!
So what does the customer get out of an adaptation workshop? During an Adaptation Workbook workshop, you will complete a template that was created as an Excel workbook with 5 tabs representing each of the 5 steps in the Adaptation Workbook
you have clearly defined your site, goals and objectives, assessed the vulnerability of your site to climate change, evaluated you original management objectives given climate change impacts, identified possible on-the-ground adaptation tactics, and described how you will monitor the efficacy of your adaptation implementation. If you use the online tool instead, you will receive a report that is organized with the same five sections. 19
You can see how by following the logical and purposeful progression of the Adaptation Workbook, you are approaching management with intentionality. This process is golden for communication – If someone asks you why you’re doing what you’re doing, you’ll have clear documentation showing your thought processes and rationales. AND it lends itself well to periodically re-evaluating your objectives to see if your tactics need to be adjusted. 20
Demonstration Sites & Case Studies
Goals:
Demonstration sites on the NIACS Climate Change Response Framework website: adaptation.org Spur Lake SNA Bohn Farms
In the end, perhaps the most important lessons to be learned are on the ground at real- life sites. NIACS has already established 150 demonstration sites spanning 14 states. Detailed descriptions of the Adaptation Workbook sessions for these sites are on their website so that others may learn. Our WICCI Plants and Natural Communities Working Group has been helping to add to these demonstration sites, which we will use for field tours with land managers and practitioners. 21
Where to find information:
Climate Change Vulnerability Assessments wicci.wisc.edu Google search: “wicci natural communities”
Wisconsin CCVAs
Where can you find more information? Climate change vulnerability assessments can be found at the WICCI website on our Plants and Natural Communities Working Group
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✓Menus of Adaptation Options ✓Adaptation Demonstration Sites forestadaptation.org
Where to find information: Adaptation Resources
NIACS has an amazing website at forestadaptation.org. Don’t be fooled by the URL! Although the website was originally designed for forested ecosystems, they cover non- forested ecosystems as well. From the base webpage, you can find regional information including all of the demonstration sites and the various menus of adaptation options. To learn more about the Adaptation Workbook process, go to “adaptationworkbook.org.” At either of these websites, you can find ways to connect with the wonderful NIACS staff, who are more than happy to help anyone that happens to ask. 23
Don’t forget the WICCI website!
✓ Climate impacts ✓ Static climate maps ✓ Interactive mapping tool ✓ Videos ✓ Presentation materials ✓ Reports and publications wicci.wisc.edu And don’t forget about the WICCI website! There, you can find information on climate impacts, climate maps, videos, presentation materials, reports and publications. 24
FOR ENDANGERED SPECIES
EA EAGLE GLE
PL PLATE TE
DIRECT DIRECT
GIF GIFTS TS
TAX AX
CH CHEC ECK OFF OFF
PHOTO BY EVA SZYSZKOSKIIf you are excited about the work we’re doing with invasive species and climate adaptation, I encourage you to support the WDNR Natural Heritage Conservation Program via the tax check off, direct gifts, or buying an eagle license plate. By doing so, you will help us reach our mission to preserve and protect Wisconsin’s natural heritage (plants, animals, natural communities) for future generations. 25
CHECK OFF
ACHECK OFF MARKS THE SPOT FOR ENDANGERED SPECIES.
You can enter any amount on your state tax form where it says “endangered resources” to support our work. 26
GIFTS
MAKE A DIFFERENCE, TODAY. DONATE ONLINE OR VIA MAIL
ENDANGERED RESOURCES FUND
dnr.wi.gov search “endangered resources”
You can donate online by going to dnr.wi.gov and searching for “endangered resources.”
Donations are Tax deductible, and are matched 1:1 27
EAGLE
PHOTO BY RYAN BRADYHELP DRIVE SUCCESS FOR ENDANGERED SPECIES
dnr.wi.gov search “ER license plate”
The endangered resources license plates help support endangered species through our program. Automatic $25 donation with every renewal Order forms can be found at dnr.wi.gov, with the search term “ER License Plates”
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Questions?
amy.staffen@wisconsin.gov jason.granberg@Wisconsin.gov
Richard Staffen
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My name is Amy Staffen. I am an ecologist with the Natural Heritage Conservation Program at the Wisconsin DNR in Madison. I would like to introduce my co-worker, Jason Granberg, a conservation biologist and invasive species specialist. Jason and I are also active members of WICCI, or the Wisconsin Initiative on Climate Change Impacts. WICCI was formed by the Wisconsin DNR and the University of Wisconsin in 2007, and has grown to include a network of collaborators from numerous agencies, institutions, tribes, and NGOs who work together to address climate change impacts in Wisconsin and the Upper Midwest. Jason and I will be doing a series of presentations to help you understand how climate change may affect the work that you do with invasive species. I will start by providing an overview of
invasives in Wisconsin in the future. Lastly, I’ll wrap up by telling you about a variety of resources that support climate adaptation, including some examples.
1
Let’s dive in! In the following presentation, I will describe the following:
2
3
topic of this presentation, and that’s not my strength.
deeper.
I want to caution you that climate scientists do not have a crystal ball that predicts the future. Instead, their models generate possible and likely scenarios. We actually favor the term ‘projection’ over ‘prediction’ for that reason. We can use climate projections as part of climate adaptation, a form of risk management. If we can plot the range of possible scenarios for the future, we can assess potential risk and adapt with logic and intentionality.
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The two drivers of climate are temperature and precipitation. I’m going to share with you model projections for these two drivers, and demonstrate how a single change can incite a cascade of secondary and tertiary impacts, and note examples where two changes can interact to create a separate impact.
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This is a map that our WICCI colleagues at UW-Madison produced showing projected change in annual average temperature in the 100-year period leading up to 2090. You can see that the SEWISC project area is projected to see an increase in annual average temperature of 9.75 to 10.5 degrees.
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In addition to having increasing annual mean temperatures, we will also likely see more days in the 90s than we have in the past, longer growing seasons, and warmer winters. We will have earlier springs and later autumns, which means a longer growing season, which also mean that plants have more time to grow and transpire water from the soil to the atmosphere. This combined with rising temperatures could lead to drought. Lastly, winters will likely be warmer.
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This is a map that our WICCI colleagues produced showing projected change in annual average precipitation in the 100-year period leading up to 2090. You can see that the SEWISC project area is projected to see an increase in annual average precipitation of 1.75 to 2.25 inches.
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In addition to seeing an increase in precipitation overall, we will see: 1) More frequent and intense storms, which can lead to less infiltration of stormwater to the aquifers and more sheet flow and flooding. 2) More dry periods between rain events 3) In winter, precipitation may more often fall in the form of rain or freezing rain rather than
landscape, carrying nutrient runoff (especially if farmers spread manure on the fields in winter) and sediment to open waterways.
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Atmospheric carbon dioxide has been steadily increasing on earth since the start of the Industrial Revolution, mostly due to the burning of fossil fuels. While this is one of the major drivers behind global climate change, elevated CO2 also has important implications for invasive plant growth and management, as we’ll learn later.
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On Lake Michigan, water temperatures over all may increase, while higher surface wind speeds and extreme storms may cause erosion and subsidence.
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Let’s review some of the traits that make invasives invasive. Phenotypic plasticity refers to changes in a plants form and physiology in response to environmental conditions. This can include changing from reproductive to vegetative state, allocating more resources to roots if nutrients are lacking, or altering leaf shape, size and thickness to minimize water loss and maximize photosynthesis. New invasions and invasives spread are often associated with disturbed soils. These species can also exploit sudden increases in resources such as water or nutrients, they are capable of reproducing at prolific rates, and often utilize multiple means to disperse their seeds or fruit. Now, let’s see how some of this characteristics interact with climate change. In virtually all instances, climate change just amplifies these characteristics!
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invasion.
enhances conditions for germination and growth. What species do you most associate with sedimentation in your work?
stress increases their susceptibility to pests and diseases. In addition, many insects can detect stressed trees, and appear to attack them preferentially over healthy trees (e.g., emerald ash borer).
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how useful this is when environmental conditions are erratic and changing!
reed canary grass may gain a competitive edge over native spp by extending its growing season with changing climate, while early-growing sedges such as tussock sedge and other natives will more likely retain their shorter growing periods.
Many plants, especially woody species, are able to better grab moisture from the air through their stomata with elevated CO2, which can confer an advantage to plants like common buckthorn.
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invasives, this may longer be the case. Forest pests will also be more likely to survive with warmer winters.
such as kudzu
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moisture, and atmospheric CO2 can affect the uptake, translocation, and activity of
unpredictable effects on herbicide activity.
assimilation and efficacy
enough that they can rebound from herbicide treatments
thickness to limit moisture loss during periods of higher temps or drought. This can result in reduced herbicide penetration of the leaf surface.
getting more difficult due to our typically wet springs with lots of flooding. Managers are thus unable to do as many burns, or are forced to burn on non-traditional seasons such as fall or winter.
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