LA CES Quiz for "Urban Landscape Inspirations from Native Plant Communities" with Ethan Dropkin. Part of the 2022 Grow Native MA Evenings w/Experts series.

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

LA CES requires the successful completion of a brief quiz for all online educational programming.

LA CES considers a passing score to be 75% or higher.

If you haven't already, please also complete a Course Evaluation for this course. Copy and paste this into your browser: https://forms.gle/eWq9K5i68L14voRT6

After the Quiz and the Course Evaluation have been received, you will be emailed a copy of your LA CES certificate.

Thanks for participating in this professional education program!

Email *

Email that you use for LACES, if different than above. (This helps us ensure that the quiz is connected to the correct account.)

0 points

1. What kinds of stresses do urban landscape plantings typically endure? *

10 points

Soil compaction.

Flooding.

Salt spray and salt build-up in soil.

High pH (Alkaline) soils.

A high input of dog urine.

Reflected heat load.

All of the above.

2. What effect does compaction— which destroys the structure of the soil, leading to poor water infiltration and low oxygen levels—have on trees? *

10 points

A. Not enough water can reach their roots, stunting growth.

B. Roots have a harder time absorbing adequate nutrients, also stunting their growth.

C. Compaction has little to no effect on tree health or growth.

D. A & B

3. Urban soils often have a much higher pH/ are more alkaline than is typical of soils in the Northeast U.S. because cement and other common construction materials tend to be high pH, and readily leach into surrounding soils. This can negatively affect… *

10 points

All plants, because almost no plant species are adapted to alkaline soil.

Plant species adapted to acidic (low pH) soils; they have a harder time with nutrient uptake in high pH soil, leading to chlorosis/ nutrient deficiencies.

Herbaceous plants like perennials; trees are not impacted.

Native plants; species originating in Europe or Asia are never affected.

4. Which street tree are you likely to see in any city in a temperate part of world, such as NYC, Seattle, Buenos Aires, or Beijing? *

10 points

American elm

Bald cypress

Chinkapin oak

London plane tree

5. What is meant by saying a natural plant community is an analogue of a particular urban landscape? *

10 points

The people inhabiting the natural community use more outdated technology than the ones living in the urban community.

The natural community exists in conditions that are the complete opposite of those in the urban landscape; i.e., a green roof vs. a rich mesic forest understory.

The natural community exists in conditions that are comparable to those in the urban landscape; i.e., a green roof vs. a calcareous pavement barren.

The analogous landscape exists in an alternate dimension.

6. Urban tree pits often experience wide flood/ drought swings (i.e. a deluge of rainwater running off impervious pavement followed by a significant reflected heat load when the sun comes out) and low-oxygen soils. These conditions make them analogous to: *

10 points

Upland old-growth forests

Floodplain forests

Tropical forests

Tundra

7. Swamp white oak trees are much easier to transplant than upland oak species such as red oak or white oak because: *

10 points

They have fibrous roots systems, and lack the deep taproot of upland species.

They resprout quickly if they are damaged.

They are much smaller than other oaks.

They never need to be watered after planting.

8. Groundsel tree (Baccharis halmifolia) is extremely salt tolerant, adaptable to a wide range of soil and moisture conditions, and readily regrows if cut back to the ground. These characteristics that make it a good fit for urban environments, also give it an advantage in its natural environment: *

10 points

Old-growth tropical forests.

Mountain ledges.

Chaparral.

The edges of saltmarshes, beaches, and open woodlands along the coast

9. The Tennessee coneflower (Echinacea tenneseensis) is naturally found only in: *

10 points

The hills of Kentucky.

Plateaus in the Rocky Mountains.

The calcareous pavement barrens of central Tennessee.

Green roofs in major urban centers.

10. Main takeaways for this lecture include: *

10 points

Urban planting conditions are limiting, but we don’t need to turn to exotic plants to make functional landscapes.

By using native analogue communities, we can create urban tolerant native landscapes and we can leverage urban problems into ideal growing conditions.

Using regionally native plants helps us ground our cities in a regional vocabulary.

Native plants help plug our cities into the greater ecological systems they exist within.

All of the above!

Send me a copy of my responses.

Submit

Clear form

Never submit passwords through Google Forms.

reCAPTCHA

Privacy Terms

This form was created inside of Boston Society of Landscape Architects. Report Abuse

Forms