Managing Natural Areas

Transcription

1 Managing Natural Areas The Woods In Your Backyard Program University of Maryland Extension

2 Existing Natural Areas: Considerations and Tools The Woods In Your Backyard Program

3 What We Will Learn Today Managing existing natural areas Tools and equipment considerations Controlling invasive species

4 Improving Existing Natural Areas Forest health Wildlife habitat Why? Forest products firewood, etc Recreation & aesthetics trails, solitude, nature walks, hunting, privacy screen from neighbors

5 Woodland Under Assault EAB Gyspy month Hemlock wooly adelgid Southern Pine Beetle Weather events. Question? Is leaving the woods alone the best strategy?

6 Each Habitat Mgt Unit May Require Different treatment

7 Tool & Equipment Safety Hazardous trees Equipment tractor Chainsaw Axes, etc.

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9 Leave Dead Trees When cutting firewood leave the deadwood on the ground if possible It provided nutrients and habitat Cutting live trees allows you to change the species composition and structure of the woods

10 Thinning How Does it Work? Every tree needs (competes for): Sunlight Water Nutrients Growing Space CO2 Light is usually most important 08/02/

11 Thinning Reduce density of trees (known as Timber Stand Improvement) Reduce competition around individual desirable trees (known as Crop Tree Release) Done to favor residual trees, utilize harvested trees. Can be commercial or noncommercial

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13 Successful Thinning 1) Remove trees with dark trunks (inferior and/or weak) 2) Remove trees with dark trunks (suppressed or intermediate) 3) Trees left represent a successful thinning

14 Thinning Trees Rule of Thumb - pg. 79 Estimate average DBH of trees Multiply by 2 Number of feet between trunks of remaining trees EXAMPLE - if the trees average 5 inches in diameter, the desired spacing would be (5 X 2) or 10 feet. If wildlife is a major objective, add 2 4 feet to the spacing

15 Focuses on Crop Tree Management What is It? Selecting & releasing individual tree canopies Goal is to maximize space around chosen trees Based on Goals & objectives Tree growth & biology Concentrate growth potential on desired trees 16

16 Crop Tree Management Objectives can be firewood, lumber, aesthetics, wildlife, etc Crop Tree Release Good for younger woods Select crop trees Number can vary Release (Free To Grow) on 3-4 sides Concentrates/accelerates growth

17 The center tree has space to grow on three of the four sides

18 Adjust the intensity of cutting by adjusting the number of crop trees selected for release

19 Increase in free to grow rating can increase diameter growth

20 How to Visualize Change. Mark the trees to cut and then stand back and imagine how it will look when done.

21 25 years Diameter growth increases with crown release 25 years

22 Unthinned White Pine Plantings Still have crown Not falling apart Very dense, little understory, trees dying out Canopy tight. Crowns of trees have little live branches <25% here

23 Thinning Can Help (tree vigor, habitat) Opening the canopy allows opportunities for invasives (Japanese stilt grass in this case)

24 Degraded White Pine Plantings?? Options limited Old and Falling Apart Holes in the canopy

25 Assessing Competition Among Trees

26 Changing what will grow! Cutting Immediate Leaves the root system in place Girdling Chemically Combination

27 Hatchet or chainsaw Cut through the cambium Some species easier to kill than others. Mechanical Girdling Create a snag for wildlife

28 Herbicides Basics Understand that most vegetation management problems can be addressed using: Glyphosate (Roundup) post-emergent most home stores Triclopyr (Garlon) pre-emergent only available in 2.5 gallons Use a backpack sprayer calibrate it!!! Spray at proper time of year Some county weed departments will do herbicide spraying on larger areas for a fee. Educate yourself get a private herbicide applicators license! Read the label!

29 Applying Herbicides to Individual Trees Stump Treatment 50% mixture of Roundup (glyphosate) or Garlon 3a (triclopyr) Apply to outer inch inside bark Use a good ax

30 Applying Herbicides to Individual Trees Hack n Squirt 50% mixture of Roundup (glyphosate) or Garlon 3a (triclopyr) Use a good ax

31 Applying Herbicides to Individual Trees Foliar & Basal with Backpack Sprayer Foliar application August-October best Always read the label and follow the instructions Basal application Garlon 4 Apply anytime

32 Controlling Vines Will improve growth & quality Cut at base of tree Basal herbicide application effective no cutting needed Vines will dry out and fall apart Kill vines in crop trees, Keep some vines for wildlife in poor quality trees. Swedish Safety Brush Ax

33 Harvesting Trees In Your Woodland Forests are resilient Forest harvest in early 1900 s and 60 years later

34 Protecting Forest Health Impact of Disease, Insects, Weather Hurricanes and weather events utilizing damaged & down Emerald Ash Borer proactive harvest of ash trees if possible Gypsy moth reducing the amount of oak Asian longhorn beetle What is next?

35 Harvesting or Other Management in Large-Lot Suburban Developments Call a Forester

36 Smaller and lower impact harvesting and processing equipment available

37 Small Clearcut: now and after 10 years

38 Regeneration after 6 years

39 Regeneration Harvests Purpose is to promote the development and growth of young trees Correct an undesirable condition. Young regeneration growing after a shelterwood harvest

40 Best Management Practices Purpose to reduce erosion and prevent or control water pollution resulting from actions which disturb soil.

41 Best Management Practices Cleaning out culverts Water bars divert water from road

42 Conclusions Use the WIYB guide to learn more about your property and identify some projects. Desirable outcomes can be related to forest products, wildlife, aesthetics, water quality, recreational or a combination of each. You have a toolbox of techniques that provide many options. Consider using the paid services of a forester.

43 Invasive Species What are they? General characteristics Why are they so bad? Control options Some specific examples

44 Invasive Species What Are They? Also known as exotic, non-native, or nonindigenous plants Alien to the ecosystem. Reduce Cause economic harm or environmental damage, or injury to human health Can be plants, animals, or other organisms Not all invasive plants are non-native

45 Honeysuckle Grapevine Kudzu Invasive and natural species can take over. Especially in early succession stages

46 Invasive Species General Characteristics Rapid growth and maturity Aggressively opportunistic Prolific seed producers Rampant vegetative spread Few natural enemies or predators Outcompete native species Once established, high cost to control

47 Invasive Species What Do I Do About Them? Step1: Learn to identify them Step 2: Plan and Assess Your Property Prevention & Control (management) Restoration of native plants If already established, eradication is most likely not an option

48 Invasives Species & Herbicide In many cases, control can only be achieved by using herbicides as part of an integrated approach. A combination of mechanical, chemical, environmental, and biological methods may be needed. Best to control invasives species before you open the canopy and let in more light Tree of heaven - Bush honeysuckle Barberry - Japanese honeysuckle Stilt grass - Autumn Olive Mulitflora rose - Others

49 Mechanical Invasive Species Control Options Hand-pulling, cutting, mowing Targeted grazing - goats Chemical Herbicides Environmental Create conditions in which the plant cannot survive Habitat conversion Biological Insect Microbial pathogen

50 Common Invasive Species Ailanthus Aka: Tree-of-Heaven Heaven wood Stinkwood, Stink Tree Paradise Tree Introduced in late 1700s from China as an ornamental May be confused with sumac or black walnut

51 Common Invasive Species Ailanthus Highly aggressive Disturbed sites 300,000 seeds annually Prolific root sprouter Allelopathic No wildlife value Minimal timber value

52 Common Invasive Species Ailanthus Control Mechanical Limited hand pulling Chemical is most effective Foliar < 2 Basal 2 6 Cut stump > 6 Environmental Reforestation

53 Common Invasive Species Multiflora Rose Introduced in 1860s from Asia Ornamental Erosion control Living fence Wildlife habitat Perennial Flowers: May - June Rose hips: Sept. Oct. Common on formerly grazed areas

54 Common Invasive Species Multiflora Rose Means of spread Seed favored by wildlife Layering Forms dense thickets Chokes out desirable vegetation Impenetrable Highly competitive for water and nutrients

55 Common Invasive Species Multiflora Rose Control Mechanical Responds well to: Cutting Mowing Grubbing Repeat treatment necessary 3 4 times per year 2 6 years Chemical Glyphosate Cut stump or foliar Environmental Rx burning Re-establish desired ground cover

56 Other Common Invasive Species Vines Oriental Bittersweet

57 Other Common Invasive Species Vines Japanese Honeysuckle

58 Invasive Species Final Thoughts.. Make them a priority Get them under control before you implement other projects Get a private herbicide applicators license. Be vigilant learn to recognize them in all life stages Annual effort Integrated Vegetation Management

59 Invasive Species Questions or Comments?

60 Now What? Let s Plan A Project! What history are you writing?

61 Choosing Projects (Page of guide, Pg of workbook) Use the worksheet to identify a few project ideas that fit your objectives

62 Make a Timetable Spell out Details (Pg of book, Pg of workbook) Using the worksheet and other case studies in the workbook as examples. Come up with one or two projects with details for your property.

63 Activity Review Each person picks a project(s) based on their interests - Use Activity 14 for ideas Pg 24 of workbook). Each person fills out Activity 15 (pg 27) for their project idea. When all are done share your projects and provide feedback. Note: Case studies with filled out worksheets are provided for the Lees and the Rothmans on pages If time allows a willing person in each group can share their project idea with the class.