On the role of microenvironmental heterogeneity in the ecology and diversification of neotropical rain-forest palms (Arecaceae)

2001 ◽  
Vol 67 (1) ◽  
pp. 1-53 ◽  
Author(s):  
Jens-Christian Svenning
Keyword(s):  
Rain Forest ◽  
Neotropical Rain Forest

scholarly journals Ficus insipida subsp. insipida (Moraceae) reveals the role of ecology in the phylogeography of widespread Neotropical rain forest tree species

2014 ◽  
Vol 41 (9) ◽  
pp. 1697-1709 ◽  
Author(s):  
Eurídice N. Honorio Coronado ◽  
Kyle G. Dexter ◽  
Monica F. Poelchau ◽  
Peter M. Hollingsworth ◽  
Oliver L. Phillips ◽  
...  
Keyword(s):  
Tree Species ◽  
Rain Forest ◽  
Forest Tree ◽  
Forest Tree Species ◽  
Neotropical Rain Forest

Life History Diversity of Canopy and Emergent Trees in a Neotropical Rain Forest

1992 ◽  
Vol 62 (3) ◽  
pp. 315-344 ◽  
Author(s):  
Deborah A. Clark ◽  
David B. Clark
Keyword(s):  
Life History ◽  
Rain Forest ◽  
Neotropical Rain Forest

Ecological and isotopic discrimination of syntopic rodents in a neotropical rain forest of French Guiana

2003 ◽  
Vol 19 (2) ◽  
pp. 209-214 ◽  
Author(s):  
Jean-François Mauffrey ◽  
François Catzeflis
Keyword(s):  
Stable Isotopes ◽  
Isotopic Composition ◽  
Rain Forest ◽  
French Guiana ◽  
Ecological Studies ◽  
Carbon Isotope Ratios ◽  
Photosynthetic Pathways ◽  
Feeding Process ◽  
Neotropical Rain Forest

Stable isotopes are commonly used in ecological studies to infer food resources (Ambrose & DeNiro 1986, Bocherens et al. 1990,1991,1994;Yoshinaga et al. 1991) since isotopic composition is conserved during the feeding process. Moreover,for herbivorous (sensu lato) species, it is often possible to identify the main resource because different photosynthetic pathways generate different values of carbon isotope ratios (Park & Epstein 1961, Sternberg et al. 1984). This allows the characterization of broad biota such as savannas or forest and discrimination of grazers from sympatric folivorous species (DeNiro & Epstein 1978).

scholarly journals The role of termite CH<sub>4</sub> emissions on ecosystem scale: a case study in the Amazon rain forest

2020 ◽  
Author(s):  
Hella van Asperen ◽  
João Rafael Alves-Oliveira ◽  
Thorsten Warneke ◽  
Bruce Forsberg ◽  
Alessandro Carioca de Araujo ◽  
...  
Keyword(s):  
Rain Forest ◽  
Emission Factor ◽  
Field Studies ◽  
Ch4 Emission ◽  
Termite Mound ◽  
Flux Chamber ◽  
Termite Mounds ◽  
Ch4 Emissions ◽  
Amazon Rain Forest

Abstract. The magnitude of termite methane (CH4) emissions is still an uncertain part of the global CH4 budget and current emission estimates are based on limited field studies. We present in-situ CH4 emission measurements of termite mounds and termite mound sub samples, performed in the Amazon rain forest. Emissions of five termite mounds of the species Neocapritermes brasiliensis were measured by use of a large flux chamber connected to a portable gas analyser, measuring CH4 and CO2. In addition, the emission of mound sub samples was measured, after which termites were counted, so that a termite CH4 and CO2 emission factor could be determined. Mound emissions were found to range between 17.0–34.8 nmol mound−1 s−1 for CH4 and between 1.6–13.5 μmol mound−1 s−1 for CO2. A termite emission factor of 0.32 μmol CH4 gtermite−1 h−1 was found, which is twice as high as the only other reported average value for the Amazon. By combining mound emission measurements with the termite emission factor, colony sizes could be estimated, which were found to range between 50–120 thousand individuals. Estimates were similar to literature values, and we therefore propose that this method can be used as a quick non-intrusive method to estimate termite colony size in the field. The role of termites in the ecosystems CH4 budget was evaluated by use of two approaches. Termite mound emission values were combined with local termite mound density numbers, leading to an estimate of 0.15–0.71 nmol CH4 m−2 s−1 on average emitted by termite mounds. In addition, the termite CH4 emission factor from this study was combined with termite density numbers, resulting in an estimate of termite emitted CH4 of ~1.0 nmol m−2 s−1. Considering the relatively low net CH4 emissions previously measured at this ecosystem, we expect that termites play an important role in the CH4 budget of this Terra Firme ecosystem.

scholarly journals Fisiología y ecología del fitocromo: su función en las semillas

2017 ◽  
pp. 71
Author(s):  
Alma Orozco-Segovia
Keyword(s):  
Environmental Conditions ◽  
Rain Forest ◽  
Los Tuxtlas ◽  
Developmental Processes ◽  
Plant Pigment ◽  
The Subject ◽  
Forest Plants

Phytochrome is the plant pigment which participate in several developmental processes regulated by light. In recent years this pigment has been associated with the detection of the environmental conditions but there is still a gap of information concerning the physioecological role of the pigment. In this paper the knowledge of the role of phytochrome on seed photoblastism is analysed based on several recent works done on the subject mainly with pioneer rain forest plants from Los Tuxtlas, Veracruz.

Five new thelotremoid Graphidaceae from the Philippines

Phytotaxa ◽  
2014 ◽  
Vol 189 (1) ◽  
pp. 282 ◽  
Author(s):  
EIMY RIVAS PLATA ◽  
HARRIE J. M. SIPMAN ◽  
ROBERT LÜCKING
Keyword(s):  
New Species ◽  
Rain Forest ◽  
The Philippines ◽  
New Combination ◽  
Historical Collections ◽  
Biotic Diversity

Five new species of thelotremoid Graphidaceae are described from the Philippines: Myriotrema subviride Rivas Plata, Sipman & Lücking, differing from Myriotrema viride in the more prominent ascomata and transversely septate ascospores; Ocellularia gigantospora Rivas Plata, Sipman & Lücking, differing from O. ripleyi in the uncarbonized, ecolumellate ascomata and the larger ascospores; O. leucocavata Rivas Plata, Sipman & Lücking, differing from O. cavata in the uncarbonized ascomata and the larger ascospores; O. sublaeviusculoides Rivas Plata, Sipman & Lücking, differing from O. laeviusculoides in the erumpent ascomata with black columella; and Thelotrema philippinum Rivas Plata, Sipman & Lücking, differing from Thelotrema suecicum in the stictic acid chemistry. The new combination Ocellularia megalospora (Müll. Arg.) Lücking is also proposed. Three of the new species are based on historical collections from vanished rain forest areas on the island of Luzon and are probably extinct, emphasizing the role of herbaria in documenting biotic diversity from threatened ecosystems.

The Role of Cloud Combing and Shading by Isolated Trees in the Succession from Maquis to Rain Forest in New Caledonia1

Biotropica ◽  
2002 ◽  
Vol 34 (2) ◽  
pp. 199 ◽  
Author(s):  
L. S. Rigg ◽  
N. J. Enright ◽  
G. L. W. Perry ◽  
B. P. Miller
Keyword(s):  
Rain Forest ◽  
Isolated Trees
Sign in / Sign up

Export Citation Format

Share Document