TITLE

Dinámica del daño foliar en plántulas de Drimys granadensis (Winteraceae) y Clusia multiflora (Clusiaceae) en el bosque altoandino de la Cordillera Oriental colombiana

AUTHOR(S)
Ramos, Carolina; García, Mary R.
PUB. DATE
September 2008
SOURCE
Revista de Biología Tropical;sep2008, Vol. 56 Issue 3, p1087
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Because of their slow growth, shade-tolerant species remain exposed to foliar damage long before reproductive age. Foliar damage can be controlled through synchronous leaf production and specialized phytochemical strategies. In this study, the dynamics of foliar damage in different cohorts of seedlings were evaluated to determine if the High-Andean species, Clusia multiflora (Clusiaceae) and Drimys granadensis (Winteraceae) appeal to the synchronous leaf production for controlling the herbivory and pathogenical damage, and to establish the possible relations between the healthy state, growth and mortality of seedlings. Since a recently-emerged seedling could not supply the physiological costs of specialized strategies, we expected the highest synchronous leaf production in the youngest individuals, and differences between cohorts in foliar damage. Four variables were measured to evaluate the health state along time, in three cohorts of seedlings: Proportion of predated leaves (Pp), proportion of healthy leaves (Ps), proportion of leaves with symptoms of disease or punctual damage (Pe) and growing (% increment of height). Both species showed significant differences between periods in the proportion of healthy leaves, but there was not an effect of time-cohort interaction, therefore synchronic production of leaves was not a strategy more used for any particular cohort. Foliar damage oscillated along time, fact that can be explained by the pulses of leaf production. However, this strategy had little efficiency to control the pathogen attack. In general, the unified behavior of all variables was affected by cohort, time, species an all the different interactions. Association between growing and foliar damage were conditioned by climate. The highest mortality occurred during the dry season, and one fourth of the D. granadensis deaths were caused by the joint action of herbivory and drought. Results suggest that in spite of the synchronous leaf production in all cohorts, this strategy quickly loses the efficiency for controlling foliar damage, because the means of Ps were below of 0.25 at the end of the monitoring period. The differences between species in the dynamics of health state should explain partially their coexistence in the High-Andean forest.
ACCESSION #
36619702

 

Related Articles

  • Anthraquinones from Cratoxylnm aborescens (Guttiferae). Ee, G. C. L.; Jong, V. Y. M.; Sukari, M. A.; Lee, T.K.; Tan, A. // Pertanika Journal of Science & Technology;Jan2010, Vol. 18 Issue 1, p77 

    Our continuing interest in anthraquinones from the Guttiferae family has led us to look at the genus Cratoxylum. A detailed chemical study on Cratoxylum aborescens resulted in the isolation of three anthraquinones, namely 1,8-dihydroxy-3-methoxy-6-methylanthraquinone (1), vismiaquinone (2) and...

  • Oil Content variation and Antimicrobial activity of Eucalyptus leaves oils of three different Species of Dehradun, Uttarakhand, India. Bachheti, R. K.; Joshi, Archana; Singh, Arjun // International Journal of ChemTech Research;Apr-Jun2011, Vol. 3 Issue 2, p625 

    Eucalyptus is a tall, evergreen tree, native to Australia and Tasmania, successfully introduced worldwide, now extensively cultivated in many other countries including India. Aim of this study is to determine the oil content variation and antimicrobial activity of three different eucalyptus...

  • The impact of seed dispersal by black and gold howler monkeys on forest regeneration. Bravo, Susana // Ecological Research;Mar2012, Vol. 27 Issue 2, p311 

    In Neotropical humid forest, the majority of tree species have seeds dispersed by vertebrates. Seed deposition by vertebrates is often spatially aggregated and a low per capita survival for seeds and seedlings is predicted. However, mortality factors could be saturated by high densities. I...

  • Effects of nutrient availability on performance and mortality of Rumex obtusifolius and R. crispus in unmanaged grassland. Hejcman, Michal; Strnad, Lukáš; Hejcmanová, Pavla; Pavlů, Vilém // Journal of Pest Science;Jun2012, Vol. 85 Issue 2, p191 

    Several authors record high mortality of the weedy species Rumex obtusifolius in unmanaged grasslands, but there have never been any studies on how the performance and mortality of R. obtusifolius and R. crispus are affected by different nutrient availability in unmanaged temperate grasslands....

  • An assessment of seedling damage by wild house mice ( Mus musculus) and wild deer mice ( Peromyscus spp.). Witmer, Gary W.; Snow, Nathan P.; Moulton, Rachael S.; Swartz, Jenna L. // Canadian Journal of Forest Research;Jun2012, Vol. 42 Issue 6, p1168 

    Although it is known that voles will damage seedlings, we do not know the extent to which deer mice ( Peromyscus spp.) and house mice ( Mus musculus Linnaeus, 1758) damage seedlings. Knowing this information can assist resource managers in better targeting problem species and implementing...

  • How a corn plant develops. Nanda, Dave // American Agriculturist (0161-8237);Jun2012, Vol. 209 Issue 6, p16 

    The article discusses the stages of maturity of a corn crop, including leaf emergence, seedling emergence, and roots elongation.

  • Weed That I Am. Box, Thad // Rangelands;Oct2005, Vol. 27 Issue 5, p52 

    The article offers reflections on invasive species. The author considers his maple seedlings as common weeds. It argues that the role of the seedlings as invasive species is determined by its biology, its ability to reproduce and thrive in existing vegetation. Moreover, it addresses the...

  • NUMBER OF EMERGED SEEDLINGS AND SEEDLING LONGEVITY OF THE NON-RECRUITING, CRITICALLY ENDANGERED HÃ…YUN LÃ…GU TREE SERIANTHES NELSONII MERR. (FABALES: LEGUMINOSAE) ARE INFLUENCED BY MONTH OF EMERGENCE. Marler, Thomas E.; Cascasan, April N. // Journal of Threatened Taxa;12/26/2015, Vol. 7 Issue 15, p8221 

    Emergence and longevity of seedlings beneath Guam's only known HÃ¥yun LÃ¥gu Tree Serianthes nelsonii were studied to determine the fate of every observed seedling during 2013. Newly emerged seedlings were marked with wire stakes every 15 days, then the stakes were collected at each seedling...

  • Botanical ark. Riley, Kathy // Australian Geographic;Jul-Sep2008, Issue 91, p18 

    The article offers information on the diverse plant species in Australia. Australia's rainforests of Tasmania, New South Wales and Queensland display a wide range of plants. The plant Berberidopsis beckleri is found on the sunny edges of high-altitude rainforest and the tree Lycapodiella cernua,...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics