Tropical forest restoration: Survivorship, growth, resilience, and ecological services [poster]

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Tropical forest restoration: Survivorship, growth, resilience, and ecological services [poster]

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Title:
Tropical forest restoration: Survivorship, growth, resilience, and ecological services [poster]
Creator:
Hamilton, Debra
Parshall, Timothy
Johnson, Katherine
Goldsmith, Gregory
Publication Date:
Language:
text in English

Subjects

Subjects / Keywords:
Reforestation -- Reforestación -- Costa Rica--Puntarenas--Monteverde Zone -- Costa Rica--Puntarenas--Zona de Monteverde

Notes

Abstract:
The Fundación Conservacionista Costarricenseand the Monteverde Institute have collaborated to support reforestation on the Pacific slope of Monteverde, Costa Rica. Costs have been low, funded principally by donations and small grants. The production of at least 8000 trees per year has been necessary to meet the voluntary demand of landowners. Here, we present data on survival and growth rates of tree seedlings that were planted on conservation land, tagged, and followed over time. Since 1999, over 180,000 trees of 93 native species have been raised and distributed to landowners.
General Note:
Author affiliations: 1) Monteverde Insittute 2) Fundacion ConservacionistaCostarricense, 3) Westfield State University 4) Ecosystem Fluxes Group, Paul ScherrerInstitut

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|Monteverde Institute
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|Added automatically
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This item is licensed with the Creative Commons Attribution Non-Commercial No Derivative License. This license allows others to download this work and share them with others as long as they mention the author and link back to the author, but they can’t change them in any way or use them commercially.
Resource Identifier:
M39-00567 ( USFLDC DOI )
m39.567 ( USFLDC Handle )

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Tropical forest restoration: Survivorship, growth, resilience, and ecological services Debra Hamilton 1,2 ; Timothy Parshall 3 ; Katherine Johnson 1 ; and Gregory Goldsmith 4 1 Monteverde Institute, 2 Fundacion Conservacionista Costarricense 3 Westfield State University, 4 Ecosystem Fluxes Group, Paul Scherrer Institut BOX 1 : What is the effect of maintenance and fertilizer on seedling success? Reforestation in Monteverde Costa Rica PROJECT GOALS : 1. Raise seedlings of native trees for landowners to restore forests on their properties. 2. Investigate survival and growth of planted trees under different management scenarios, given that landowners do not have the economic resources for seedling maintenance or fertilizer. Survival is significantly higher when trees are maintained (weeded) for both species (Chi Square; p< 0.01 ) but is not influenced by fertilizer (Chi Square; p> 0.05 ). Site: Refugio Nacimiento y Vida, abandoned pasture Experimental Design Two species planted: Mauria heterophylla ( Anacardiaceae ) Myrsianthes Myrtaceae ) Two treatments: Maintenance (M): V egetation within 1m of seedlings removed by string trimmer three times each year (May, Sept, & December). Fertilizer (F): One time application of 10 30 10 ( NPK) in pellet form. Plots: 20m x 12m, 25 trees of each species Maintenance clearly improves seedling survival and growth (see BOX 1 ), but the costs outweigh the benefits over time. Recommendation : Maintain trees for one year and then stop, assuming that future survival and growth is minimally impacted by regrowth of surrounding vegetation. Assumptions: 1) Trees cost 64 cents ( seeds collected, germinated, nursery care, transport, and planting ). 2) Maintenance costs 36 cents per year or $ 1.44 for 4 years. 3) Total cost of producing a living tree by year four is $ 2.08 Box 3 : Maintenance Cost vs. Benefit: How long should seedlings be maintained? BOX 2 : How variable is native seedling survival and growth? Site: Refugio Ecolgico Finca Rodriquez, abandoned pasture and coffee plantation Initial planting: Seven species in 2011 Maintenance : Surrounding vegetation removed within 1 m of seedlings (with string trimmer) three times each year (May, September, December ) Growth rate (of leaves) is significantly greater with maintenance but is not influenced by fertilizer Height growth was not significantly greater with maintenance for one species ( M. heterophylla ) Species (n=35) Height (cm ) Survival (%) Myrsine coriacea 259 75 Cinnamomum paratriplenervi 169 42 Inga punctata 156 89 Mauria heterophylla 153 73 Nectandra salicina 85 61 Ocotea monteverdensis 76 26 Casimiroa edulis 58 33 Table 1 Four year survival (%) and height (cm) of seven species planted in an abandoned field and coffee plantation. One year after planting Three years after planting 0 10 20 30 40 50 60 70 80 90 100 F-M F-NM NF-M NF-NM Survival after four years (%) Treatment M. heterophylla 0 10 20 30 40 50 60 70 80 90 100 F-M F-NM NF-M NF-NM Survival after four years (%) Treatment M. black fruit Cost per surviving tree The Fundacin Conservacionista Costarricense and the Monteverde Institute have collaborated to support reforestation on the Pacific slope of Monteverde Costa Rica. Costs have been low, funded principally by donations and small grants 3 replicates of each treatment, for a total of 12 plots and 300 seedlings of each species Results: Kaplan Meier 74 % probability of survival for maintained seedlings and 34 % for non maintained 0% 20% 40% 60% 80% 100% 0 50 100 150 200 250 300 Transplant Year 1 Year 2 Year 3 Year 4 Survival (%) Height (ch) Nectandra salicina ( Lauraceae ) Height Survivorship 80% 85% 90% 95% 100% 0 50 100 150 200 250 300 Transplant Year 1 Year 2 Year 3 Year 4 Survival (%) Height (ch) Inga punctata ( Fabacea ) Height Survivorship 0% 20% 40% 60% 80% 100% 0 50 100 150 200 250 300 Transplant Year 1 Year 2 Year 3 Year 4 Survival (%) Height (ch) Myrsine coriacea ( Myrsinaceae ) Height Survivorship 0% 20% 40% 60% 80% 100% 0 50 100 150 200 250 300 Transplant Year 1 Year 2 Year 3 Year 4 Survival (%) Height (ch) Ocotea monteverdensis ( Lauraceae ) Height Survivorship 0% 20% 40% 60% 80% 100% 0 50 100 150 200 250 300 Transplant Year 1 Year 2 Year 3 Year 4 Survival (%) Height (ch) Mauria heterophylla ( Anacardiaceae ) Height Survivorship 0% 20% 40% 60% 80% 100% 0 50 100 150 200 250 300 Transplant Year 1 Year 2 Year 3 Year 4 Survival (%) Height (ch) Cinnamomum paratriplenervi ( Lauraceae ) Height Survivorship 0% 20% 40% 60% 80% 100% 0 50 100 150 200 250 300 Transplant Year 1 Year 2 Year 3 Year 4 Survival (%) Height (ch) Casimiroa edulis ( Rutaceae ) Height Survivorship Annual survival (%) and height (cm) of seven species planted in an abandoned coffee plantation. Since 1999 over 180,000 trees of 93 native species have been raised and distributed to landowners. The production of at least 8000 trees per year has been necessary to meet the voluntary demand of landowners. Overview Here we present data on survival and growth rates of tree seedlings that were planted on conservation land, tagged, and followed over time. Both height growth and survival are highly variable among these species. After 3 years, survival rates are more stable and height growth has started to slow. Two species produced fruit in their 4 th year. It is more expensive to maintain trees if survival rate is above 30 % (after 4 years of maintenance) 96% 95 % 95 % 94 % 65 % 61 % 57 % 56 % 96% 89 % 83 % 82 % $$0.25 $0.50 $0.75 $1.00 $1.25 $1.50 $1.75 $2.00 $2.25 1 year 2 years 3 years 4 years Cost per surviving tree Scenarios of seedling survival and cost of maintenance for M. heterophylla Survivorship Survivorship Predicted survivorship with 1 yr maint Cost with maintenance ( 4 yrs ) Cost with no maintenance Cost (predicted) with one year of maintenance Survival with maintenance ( 4 yrs ) Survival without maintenance Survival (predicted) with 1 yr maintenance Los Llanos, Monteverde Survivorship versus Cost of Maintaining Planted Trees


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