Accumulation of K[sup +] and Cs[sup +] in Tropical Plant Species

2010 ◽  
Author(s):  
H. Velasco ◽  
R. M. Anjos ◽  
C. B. Zamboni ◽  
K. D. Macario ◽  
M. Rizzotto ◽  
...  
Keyword(s):  
Plant Species ◽  
Tropical Plant

scholarly journals Lower P contents and more widespread terpene presence in old Bornean than in young Hawaiian tropical plant species guilds

Ecosphere ◽  
2011 ◽  
Vol 2 (4) ◽  
pp. art45 ◽  
Author(s):  
J. Peñuelas ◽  
J. Sardans ◽  
J. Llusia ◽  
S. M. Owen ◽  
Ü. Niinemets
Keyword(s):  
Plant Species ◽  
Tropical Plant

scholarly journals A third of the tropical African flora is potentially threatened with extinction

2019 ◽  
Vol 5 (11) ◽  
pp. eaax9444 ◽  
Author(s):  
T. Stévart ◽  
G. Dauby ◽  
P. P. Lowry ◽  
A. Blach-Overgaard ◽  
V. Droissart ◽  
...  
Keyword(s):  
Plant Species ◽  
Extinction Risk ◽  
Vascular Plant ◽  
Terrestrial Ecosystems ◽  
Iucn Red List ◽  
Conservation Priorities ◽  
Conservation Assessment ◽  
Continental Scale ◽  
Tropical Plant ◽  
African Flora

Preserving tropical biodiversity is an urgent challenge when faced with the growing needs of countries. Despite their crucial importance for terrestrial ecosystems, most tropical plant species lack extinction risk assessments, limiting our ability to identify conservation priorities. Using a novel approach aligned with IUCN Red List criteria, we conducted a continental-scale preliminary conservation assessment of 22,036 vascular plant species in tropical Africa. Our results underline the high level of extinction risk of the tropical African flora. Thirty-three percent of the species are potentially threatened with extinction, and another third of species are likely rare, potentially becoming threatened in the near future. Four regions are highlighted with a high proportion (>40%) of potentially threatened species: Ethiopia, West Africa, central Tanzania, and southern Democratic Republic of the Congo. Our approach represents a first step toward data-driven conservation assessments applicable at continental scales providing crucial information for sustainable economic development prioritization.

scholarly journals The capacity to emit isoprene differentiates the photosynthetic temperature responses of tropical plant species

2019 ◽  
Vol 42 (8) ◽  
pp. 2448-2457 ◽  
Author(s):  
Tyeen C. Taylor ◽  
Marielle N. Smith ◽  
Martijn Slot ◽  
Kenneth J. Feeley
Keyword(s):  
Plant Species ◽  
Tropical Plant ◽  
Temperature Responses

The pollination ecology of the late-successional tree, Oroxylum indicum (Bignoniaceae) in Thailand

2008 ◽  
Vol 24 (05) ◽  
pp. 477-484 ◽  
Author(s):  
Tuanjit Srithongchuay ◽  
Sara Bumrungsri ◽  
Ekapong Sripao-raya
Keyword(s):  
Plant Species ◽  
Fruit Set ◽  
Pollen Grains ◽  
Pollen Load ◽  
Pollination Success ◽  
Oroxylum Indicum ◽  
Tropical Plant ◽  
Fruit Bat ◽  
Highly Sensitive ◽  
Multiple Species

Abstract:Although plant species that attract multiple species of pollinators predominate in tropical plant communities, pollination specialists appear to be at a greater advantage in tropical ecosystems in which pollinators are numerous and many plants flower synchronously. The present study determined the breeding system and legitimate pollinators ofOroxylum indicumVent. in Songkhla and Patthalung Provinces, Thailand.Oroxylum indicumexhibits steady-state flowering, with one or two flowers per inflorescence opening each night. Flowers open in the evening and drop off shortly after midnight, while its bilabiate stigma is highly sensitive, and quickly close upon being touched.Oroxylum indicumis self-incompatible. Hand-cross pollination and open pollination yielded the highest pollination success (47.7% and 31.2% respectively, n = 7 trees). About 900 pollen grains are needed for initiating fruit set. It is confirmed that a fruit bat,Eonycteris spelaea, is the legitimate pollinator. Bats are responsible for all pollen load and the pollen load from only one visit is generally sufficient to initiate fruit set. AlthoughEonycteris spelaeais effective, it is an inefficient pollinator. Compared with plant species pollinated by multiple animal species, the likelihood of pollination failure resulting from the decline in populations ofEonycteris spelaeawill be much more intense inOroxylum indicum.

scholarly journals Antiproliferative Alkaloids from Alangium longiflorum, an Endangered Tropical Plant Species

2018 ◽  
Vol 81 (8) ◽  
pp. 1884-1891 ◽  
Author(s):  
Misa Takeuchi ◽  
Yohei Saito ◽  
Masuo Goto ◽  
Katsunori Miyake ◽  
David J. Newman ◽  
...  
Keyword(s):  
Plant Species ◽  
Tropical Plant

Multiple resprouting from diaspores and single cotyledons in the Australian tropical tree species Idiospermum australiense

2002 ◽  
Vol 18 (6) ◽  
pp. 943-948 ◽  
Author(s):  
Will Edwards ◽  
Paul Gadek
Keyword(s):  
Plant Species ◽  
Tree Species ◽  
First Record ◽  
Tropical Tree ◽  
Barro Colorado Island ◽  
Tropical Tree Species ◽  
Tropical Plant

In 1999, Dalling & Harms simulated 100% above-ground herbivory on seedlings of Gustavia superba, a large-seeded species from Barro Colorado Island, Panama, and showed the remarkable ability for cotyledons to regenerate up to eight new shoots. They used this evidence to propose that cotyledon size (at least in this species)was adaptive in surviving pre- and early post-germination hazards (Dalling & Harms 1999). In this note we describe the first record of multiple resprouting in an Australian tropical plant species. Idiospermum australiense (Diels) S. T. Blake (Calycanthaceae) exhibits characteristics similar (but not identical) to G. superba that support the contention of Dalling & Harms (1999).

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