scholarly journals Winners and losers: tropical forest tree seedling survival across a West African forest–savanna transition

2016 ◽  
Vol 6 (10) ◽  
pp. 3417-3429 ◽  
Author(s):  
Anabelle W. Cardoso ◽  
José A. Medina‐Vega ◽  
Yadvinder Malhi ◽  
Stephen Adu‐Bredu ◽  
George K.D. Ametsitsi ◽  
...  
Keyword(s):  
Tropical Forest ◽  
Seedling Survival ◽  
Forest Tree ◽  
West African ◽  
Tree Seedling

scholarly journals Nutrient deposition enhances post-fire survival in non-N-fixing savanna tree seedlings

2018 ◽  
Author(s):  
Varun Varma ◽  
Mahesh Sankaran
Keyword(s):  
Community Composition ◽  
Seedling Growth ◽  
Growth Rates ◽  
Seedling Survival ◽  
Tropical Dry Forest ◽  
Forest Tree ◽  
Dry Forest ◽  
Tree Seedlings ◽  
Tree Seedling ◽  
Nutrient Deposition

AbstractNutrient deposition can modify plant growth rates and potentially alter the susceptibility of plants to disturbance events, while also influencing properties of disturbance regimes. In mixed tree-grass ecosystems, such as savannas and tropical dry forests, tree seedling growth rates strongly influence the ability of seedlings to survive fire (i.e. post-fire seedling survival), and hence, vegetation structure and tree community composition. However the effects of nutrient deposition on the susceptibility of recruiting trees to fire are poorly quantified. In a field experiment, seedlings of multiple N-fixing and non-N-fixing tropical dry forest tree species were exposed to nitrogen (N) and phosphorus (P) fertilisation, and fire. We quantified nutrient-mediated changes in a) mean seedling growth rates; b) growth rates of the fastest growing individuals and c) post-fire seedling survival. N-fixers had substantially higher baseline post-fire seedling survival, that was unaffected by nutrient addition. Fertilisation, especially with N, increased post-fire survival probabilities in non-N-fixers by increasing the growth rates of the fastest growing individuals. These results suggest that fertilisation can lead to an increase in the relative abundance of non-N-fixers in the resprout community, and thereby, alter the community composition of tropical savanna and dry forest tree communities in the long-term.

Breaking of seed coat dormancy in a medicinal plant Tetrapleura tetraptera (Schum & Thonn)

1988 ◽  
Vol 111 (2) ◽  
pp. 393-394 ◽  
Author(s):  
C. S. Odoemena
Keyword(s):  
Medicinal Plant ◽  
Tropical Forest ◽  
Seed Coat ◽  
Post Partum ◽  
Forest Tree ◽  
West African ◽  
Traditional Medicines ◽  
Tetrapleura Tetraptera ◽  
The Family ◽  
Nursing Mothers

Tetrapleura tetraptera (Schum & Thonn) is a member of the Family Mimosaceae. It is a perennial, wild West African tropical forest tree (Hutchinson & Dalziel, 1973) and is extensively used in many traditional medicines. The fruit is used in Nigeria as a spice added to soup for nursing mothers from the day of delivery to about 1 month postnatally, to prevent post-partum contractions.

scholarly journals Leaf functional traits predict cloud forest tree seedling survival along an elevation gradient

2019 ◽  
Vol 76 (4) ◽  
Author(s):  
Tarin Toledo-Aceves ◽  
María de los Ángeles García-Hernández ◽  
Horacio Paz
Keyword(s):  
Functional Traits ◽  
Seedling Survival ◽  
Cloud Forest ◽  
Elevation Gradient ◽  
Forest Tree ◽  
Tree Seedling ◽  
Leaf Functional Traits

scholarly journals The Effect of Restoration Treatment Soils and Parent Tree on Tropical Forest Tree Seedling Growth

2015 ◽  
Vol 05 (02) ◽  
pp. 154-161 ◽  
Author(s):  
R. A. Zahawi ◽  
C. Eckert ◽  
J. M. Chaves-Fallas ◽  
L. Schwanitz ◽  
J. A. Rosales ◽  
...  
Keyword(s):  
Tropical Forest ◽  
Seedling Growth ◽  
Forest Tree ◽  
Tree Seedling ◽  
Parent Tree ◽  
Tree Seedling Growth

Proceedings of the Southern Containerized Forest Tree Seedling Conference

1982 ◽  
Author(s):  
Richard W. Guldin ◽  
James P. Barnett ◽  
[Editors]
Keyword(s):  
Forest Tree ◽  
Tree Seedling

scholarly journals Data on how tree planting and management practices influence tree seedling survival in Kenya and Ethiopia

Data in Brief ◽  
2021 ◽  
pp. 107073
Author(s):  
Christine Magaju ◽  
Leigh Ann Winowiecki ◽  
Pietro Bartolini ◽  
Asma Jeitani ◽  
Ibrahim Ochenje ◽  
...  
Keyword(s):  
Management Practices ◽  
Seedling Survival ◽  
Tree Planting ◽  
Tree Seedling

A case of gender equality: absence of sex-related costs in a dioecious tropical forest tree species

Plant Ecology ◽  
2021 ◽  
Author(s):  
Valéria Forni Martins ◽  
Rafaela Letícia Brito Bispo ◽  
Priscilla de Paula Loiola
Keyword(s):  
Tropical Forest ◽  
Gender Equality ◽  
Tree Species ◽  
Forest Tree ◽  
Forest Tree Species

scholarly journals Fire suppression and seed dispersal play critical roles in the establishment of tropical forest tree species in southeastern Africa

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tomohiro Fujita
Keyword(s):  
Seed Dispersal ◽  
Tree Species ◽  
Seedling Survival ◽  
Fire Suppression ◽  
Forest Tree ◽  
Tree Seedlings ◽  
Seedling Mortality ◽  
Forest Tree Species ◽  
Seed Deposition ◽  
Syzygium Guineense

AbstractThis study examined the mechanisms of facilitation and importance of seed dispersal during establishment of forest tree species in an Afrotropical woodland. Seedling survival of Syzygium guineense ssp. afromontanum was monitored for 2.5 years at four different microsites in savannah woodland in Malawi (southeastern Africa) under Ficus natalensis (a potential nurse plant), Brachystegia floribunda (a woodland tree), Uapaca kirkiana (a woodland tree), and at a treeless site. The number of naturally established forest tree seedlings in the woodland was also counted. Additionally, S. guineense ssp. afromontanum seed deposition was monitored at the four microsites. Insect damage (9% of the total cause of mortality) and trampling by ungulates (1%) had limited impact on seedling survival in this area. Fire (43%) was found to be the most important cause of seedling mortality and fire induced mortality was especially high under U. kirkiana (74%) and at treeless site (51%). The rate was comparatively low under F. natalensis (4%) and B. floribunda (23%), where fire is thought to be inhibited due to the lack of light-demanding C4 grasses. Consequently, seedling survival under F. natalensis and B. floribunda was higher compared with the other two microsites. The seedling survival rate was similar under F. natalensis (57%) and B. floribunda (59%). However, only a few S. guineense ssp. afromontanum seedlings naturally established under B. floribunda (25/285) whereas many seedlings established under F. natalensis (146/285). These findings indicate that the facilitative mechanism of fire suppression is not the only factor affecting establishment. The seed deposition investigation revealed that most of the seeds (85%) were deposited under F. natalensis. As such, these findings suggest that in addition to fire suppression, dispersal limitations also play a role in forest-savannah dynamics in this region, especially at the community level.

Variation in vegetation cover and seedling performance of tree species in a forest-savanna ecotone

2019 ◽  
Vol 35 (2) ◽  
pp. 74-82 ◽  
Author(s):  
Hamza Issifu ◽  
George K. D. Ametsitsi ◽  
Lana J. de Vries ◽  
Gloria Djaney Djagbletey ◽  
Stephen Adu-Bredu ◽  
...  
Keyword(s):  
Vegetation Cover ◽  
Seedling Recruitment ◽  
Seedling Survival ◽  
Tree Cover ◽  
First Year ◽  
Transplant Experiment ◽  
Tree Seedling ◽  
Savanna Woodland ◽  
Specific Effects ◽  
Species Specific

AbstractDifferential tree seedling recruitment across forest-savanna ecotones is poorly understood, but hypothesized to be influenced by vegetation cover and associated factors. In a 3-y-long field transplant experiment in the forest-savanna ecotone of Ghana, we assessed performance and root allocation of 864 seedlings for two forest (Khaya ivorensis and Terminalia superba) and two savanna (Khaya senegalensis and Terminalia macroptera) species in savanna woodland, closed-woodland and forest. Herbaceous vegetation biomass was significantly higher in savanna woodland (1.0 ± 0.4 kg m−2 vs 0.2 ± 0.1 kg m−2 in forest) and hence expected fire intensities, while some soil properties were improved in forest. Regardless, seedling survival declined significantly in the first-year dry-season for all species with huge declines for the forest species (50% vs 6% for Khaya and 16% vs 2% for Terminalia) by year 2. After 3 y, only savanna species survived in savanna woodland. However, best performance for savanna Khaya was in forest, but in savanna woodland for savanna Terminalia which also had the highest biomass fraction (0.8 ± 0.1 g g−1 vs 0.6 ± 0.1 g g−1 and 0.4 ± 0.1 g g−1) and starch concentration (27% ± 10% vs 15% ± 7% and 10% ± 4%) in roots relative to savanna and forest Khaya respectively. Our results demonstrate that tree cover variation has species-specific effects on tree seedling recruitment which is related to root storage functions.

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